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chromium / external / github.com / emscripten-core / emscripten / refs/heads/lazy / . / src / library.js
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/**
* @license
* Copyright 2010 The Emscripten Authors
* SPDX-License-Identifier: MIT
*/
//"use strict";
// An implementation of basic necessary libraries for the web. This integrates
// with a compiled libc and with the rest of the JS runtime.
//
// We search the Library object when there is an external function. If the
// entry in the Library is a function, we insert it. If it is a string, we
// do another lookup in the library (a simple way to write a function once,
// if it can be called by different names). We also allow dependencies,
// using __deps. Initialization code to be run after allocating all
// global constants can be defined by __postset.
//
// Note that the full function name will be '_' + the name in the Library
// object. For convenience, the short name appears here. Note that if you add a
// new function with an '_', it will not be found.
LibraryManager.library = {
// ==========================================================================
// getTempRet0/setTempRet0: scratch space handling i64 return
// ==========================================================================
getTempRet0__sig: 'i',
getTempRet0: function() {
return {{{ makeGetTempRet0() }}};
},
setTempRet0__sig: 'vi',
setTempRet0: function($i) {
{{{ makeSetTempRet0('$i') }}};
},
// ==========================================================================
// JavaScript <-> C string interop
// ==========================================================================
$stringToNewUTF8: function(jsString) {
var length = lengthBytesUTF8(jsString)+1;
var cString = _malloc(length);
stringToUTF8(jsString, cString, length);
return cString;
},
// ==========================================================================
// utime.h
// ==========================================================================
$setFileTime__deps: ['$setErrNo'],
$setFileTime: function(path, time) {
path = UTF8ToString(path);
try {
FS.utime(path, time, time);
return 0;
} catch (e) {
if (!(e instanceof FS.ErrnoError)) throw e + ' : ' + stackTrace();
setErrNo(e.errno);
return -1;
}
},
utime__deps: ['$FS', '$setFileTime'],
utime__proxy: 'sync',
utime__sig: 'iii',
utime: function(path, times) {
// int utime(const char *path, const struct utimbuf *times);
// http://pubs.opengroup.org/onlinepubs/009695399/basedefs/utime.h.html
var time;
if (times) {
// NOTE: We don't keep track of access timestamps.
time = {{{ makeGetValue('times', C_STRUCTS.utimbuf.modtime, 'i32') }}} * 1000;
} else {
time = Date.now();
}
return setFileTime(path, time);
},
utimes__deps: ['$FS', '$setFileTime'],
utimes__proxy: 'sync',
utimes__sig: 'iii',
utimes: function(path, times) {
// utimes is just like utime but take an array of 2 times: `struct timeval times[2]`
// times[0] is the new access time (which we currently ignore)
// times[1] is the new modification time.
var time;
if (times) {
var mtime = times + {{{ C_STRUCTS.timeval.__size__ }}};
time = {{{ makeGetValue('mtime', C_STRUCTS.timeval.tv_sec, 'i32') }}} * 1000;
time += {{{ makeGetValue('mtime', C_STRUCTS.timeval.tv_usec, 'i32') }}} / 1000;
} else {
time = Date.now();
}
return setFileTime(path, time);
},
// ==========================================================================
// sys/file.h
// ==========================================================================
flock: function(fd, operation) {
// int flock(int fd, int operation);
// Pretend to succeed
return 0;
},
chroot__deps: ['$setErrNo'],
chroot__proxy: 'sync',
chroot__sig: 'ii',
chroot: function(path) {
// int chroot(const char *path);
// http://pubs.opengroup.org/onlinepubs/7908799/xsh/chroot.html
setErrNo({{{ cDefine('EACCES') }}});
return -1;
},
fpathconf__deps: ['$setErrNo'],
fpathconf__proxy: 'sync',
fpathconf__sig: 'iii',
fpathconf: function(fildes, name) {
// long fpathconf(int fildes, int name);
// http://pubs.opengroup.org/onlinepubs/000095399/functions/encrypt.html
// NOTE: The first parameter is ignored, so pathconf == fpathconf.
// The constants here aren't real values. Just mimicking glibc.
switch (name) {
case {{{ cDefine('_PC_LINK_MAX') }}}:
return 32000;
case {{{ cDefine('_PC_MAX_CANON') }}}:
case {{{ cDefine('_PC_MAX_INPUT') }}}:
case {{{ cDefine('_PC_NAME_MAX') }}}:
return 255;
case {{{ cDefine('_PC_PATH_MAX') }}}:
case {{{ cDefine('_PC_PIPE_BUF') }}}:
case {{{ cDefine('_PC_REC_MIN_XFER_SIZE') }}}:
case {{{ cDefine('_PC_REC_XFER_ALIGN') }}}:
case {{{ cDefine('_PC_ALLOC_SIZE_MIN') }}}:
return 4096;
case {{{ cDefine('_PC_CHOWN_RESTRICTED') }}}:
case {{{ cDefine('_PC_NO_TRUNC') }}}:
case {{{ cDefine('_PC_2_SYMLINKS') }}}:
return 1;
case {{{ cDefine('_PC_VDISABLE') }}}:
return 0;
case {{{ cDefine('_PC_SYNC_IO') }}}:
case {{{ cDefine('_PC_ASYNC_IO') }}}:
case {{{ cDefine('_PC_PRIO_IO') }}}:
case {{{ cDefine('_PC_SOCK_MAXBUF') }}}:
case {{{ cDefine('_PC_REC_INCR_XFER_SIZE') }}}:
case {{{ cDefine('_PC_REC_MAX_XFER_SIZE') }}}:
case {{{ cDefine('_PC_SYMLINK_MAX') }}}:
return -1;
case {{{ cDefine('_PC_FILESIZEBITS') }}}:
return 64;
}
setErrNo({{{ cDefine('EINVAL') }}});
return -1;
},
pathconf: 'fpathconf',
confstr__deps: ['$setErrNo', '$ENV'],
confstr__proxy: 'sync',
confstr__sig: 'iiii',
confstr: function(name, buf, len) {
// size_t confstr(int name, char *buf, size_t len);
// http://pubs.opengroup.org/onlinepubs/000095399/functions/confstr.html
var value;
switch (name) {
case {{{ cDefine('_CS_PATH') }}}:
value = ENV['PATH'] || '/';
break;
case {{{ cDefine('_CS_POSIX_V6_WIDTH_RESTRICTED_ENVS') }}}:
// Mimicking glibc.
value = 'POSIX_V6_ILP32_OFF32\nPOSIX_V6_ILP32_OFFBIG';
break;
case {{{ cDefine('_CS_GNU_LIBC_VERSION') }}}:
// This JS implementation was tested against this glibc version.
value = 'glibc 2.14';
break;
case {{{ cDefine('_CS_GNU_LIBPTHREAD_VERSION') }}}:
// We don't support pthreads.
value = '';
break;
case {{{ cDefine('_CS_POSIX_V6_ILP32_OFF32_LIBS') }}}:
case {{{ cDefine('_CS_POSIX_V6_ILP32_OFFBIG_LIBS') }}}:
case {{{ cDefine('_CS_POSIX_V6_LP64_OFF64_CFLAGS') }}}:
case {{{ cDefine('_CS_POSIX_V6_LP64_OFF64_LDFLAGS') }}}:
case {{{ cDefine('_CS_POSIX_V6_LP64_OFF64_LIBS') }}}:
case {{{ cDefine('_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS') }}}:
case {{{ cDefine('_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS') }}}:
case {{{ cDefine('_CS_POSIX_V6_LPBIG_OFFBIG_LIBS') }}}:
value = '';
break;
case {{{ cDefine('_CS_POSIX_V6_ILP32_OFF32_CFLAGS') }}}:
case {{{ cDefine('_CS_POSIX_V6_ILP32_OFF32_LDFLAGS') }}}:
case {{{ cDefine('_CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS') }}}:
value = '-m32';
break;
case {{{ cDefine('_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS') }}}:
value = '-m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64';
break;
default:
setErrNo({{{ cDefine('EINVAL') }}});
return 0;
}
if (len == 0 || buf == 0) {
return value.length + 1;
} else {
var length = Math.min(len, value.length);
for (var i = 0; i < length; i++) {
{{{ makeSetValue('buf', 'i', 'value.charCodeAt(i)', 'i8') }}};
}
if (len > length) {{{ makeSetValue('buf', 'i++', '0', 'i8') }}};
return i;
}
},
execve__deps: ['$setErrNo'],
execve__sig: 'iiii',
execve: function(path, argv, envp) {
// int execve(const char *pathname, char *const argv[],
// char *const envp[]);
// http://pubs.opengroup.org/onlinepubs/009695399/functions/exec.html
// We don't support executing external code.
setErrNo({{{ cDefine('ENOEXEC') }}});
return -1;
},
exit__sig: 'vi',
exit: function(status) {
#if MINIMAL_RUNTIME
throw 'exit(' + status + ')';
#else
// void _exit(int status);
// http://pubs.opengroup.org/onlinepubs/000095399/functions/exit.html
exit(status);
#endif
},
_exit__sig: 'vi',
_exit: 'exit',
_Exit__sig: 'vi',
_Exit: 'exit',
#if MINIMAL_RUNTIME
$exit: function(status) {
throw 'exit(' + status + ')';
},
#endif
// fork, spawn, etc. all return an error as we don't support multiple
// processes.
fork__deps: ['$setErrNo'],
fork__sig: 'i',
fork: function() {
// pid_t fork(void);
// http://pubs.opengroup.org/onlinepubs/000095399/functions/fork.html
// We don't support multiple processes.
setErrNo({{{ cDefine('EAGAIN') }}});
return -1;
},
vfork: 'fork',
posix_spawn: 'fork',
setgroups__deps: ['$setErrNo', 'sysconf'],
setgroups: function(ngroups, gidset) {
// int setgroups(int ngroups, const gid_t *gidset);
// https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man2/setgroups.2.html
if (ngroups < 1 || ngroups > _sysconf({{{ cDefine('_SC_NGROUPS_MAX') }}})) {
setErrNo({{{ cDefine('EINVAL') }}});
return -1;
} else {
// We have just one process/user/group, so it makes no sense to set groups.
setErrNo({{{ cDefine('EPERM') }}});
return -1;
}
},
sysconf__deps: ['$setErrNo'],
sysconf__proxy: 'sync',
sysconf__sig: 'ii',
sysconf: function(name) {
// long sysconf(int name);
// http://pubs.opengroup.org/onlinepubs/009695399/functions/sysconf.html
switch(name) {
case {{{ cDefine('_SC_PAGE_SIZE') }}}: return {{{ POSIX_PAGE_SIZE }}};
case {{{ cDefine('_SC_PHYS_PAGES') }}}:
#if ALLOW_MEMORY_GROWTH
#if MAXIMUM_MEMORY == -1 // no maximum set, assume the best
var maxHeapSize = 4*1024*1024*1024;
#else
var maxHeapSize = {{{ MAXIMUM_MEMORY }}};
#endif
#else // no growth
var maxHeapSize = HEAPU8.length;
#endif
return maxHeapSize / {{{ POSIX_PAGE_SIZE }}};
case {{{ cDefine('_SC_ADVISORY_INFO') }}}:
case {{{ cDefine('_SC_BARRIERS') }}}:
case {{{ cDefine('_SC_ASYNCHRONOUS_IO') }}}:
case {{{ cDefine('_SC_CLOCK_SELECTION') }}}:
case {{{ cDefine('_SC_CPUTIME') }}}:
case {{{ cDefine('_SC_FSYNC') }}}:
case {{{ cDefine('_SC_IPV6') }}}:
case {{{ cDefine('_SC_MAPPED_FILES') }}}:
case {{{ cDefine('_SC_MEMLOCK') }}}:
case {{{ cDefine('_SC_MEMLOCK_RANGE') }}}:
case {{{ cDefine('_SC_MEMORY_PROTECTION') }}}:
case {{{ cDefine('_SC_MESSAGE_PASSING') }}}:
case {{{ cDefine('_SC_MONOTONIC_CLOCK') }}}:
case {{{ cDefine('_SC_PRIORITIZED_IO') }}}:
case {{{ cDefine('_SC_PRIORITY_SCHEDULING') }}}:
case {{{ cDefine('_SC_RAW_SOCKETS') }}}:
case {{{ cDefine('_SC_READER_WRITER_LOCKS') }}}:
case {{{ cDefine('_SC_REALTIME_SIGNALS') }}}:
case {{{ cDefine('_SC_SEMAPHORES') }}}:
case {{{ cDefine('_SC_SHARED_MEMORY_OBJECTS') }}}:
case {{{ cDefine('_SC_SPAWN') }}}:
case {{{ cDefine('_SC_SPIN_LOCKS') }}}:
case {{{ cDefine('_SC_SYNCHRONIZED_IO') }}}:
case {{{ cDefine('_SC_THREAD_ATTR_STACKADDR') }}}:
case {{{ cDefine('_SC_THREAD_ATTR_STACKSIZE') }}}:
case {{{ cDefine('_SC_THREAD_CPUTIME') }}}:
case {{{ cDefine('_SC_THREAD_PRIO_INHERIT') }}}:
case {{{ cDefine('_SC_THREAD_PRIO_PROTECT') }}}:
case {{{ cDefine('_SC_THREAD_PROCESS_SHARED') }}}:
case {{{ cDefine('_SC_THREAD_SAFE_FUNCTIONS') }}}:
case {{{ cDefine('_SC_THREADS') }}}:
case {{{ cDefine('_SC_TIMEOUTS') }}}:
case {{{ cDefine('_SC_TIMERS') }}}:
case {{{ cDefine('_SC_VERSION') }}}:
case {{{ cDefine('_SC_2_C_BIND') }}}:
case {{{ cDefine('_SC_2_C_DEV') }}}:
case {{{ cDefine('_SC_2_CHAR_TERM') }}}:
case {{{ cDefine('_SC_2_LOCALEDEF') }}}:
case {{{ cDefine('_SC_2_SW_DEV') }}}:
case {{{ cDefine('_SC_2_VERSION') }}}:
case {{{ cDefine('_SC_THREAD_PRIORITY_SCHEDULING') }}}:
return 200809;
case {{{ cDefine('_SC_MQ_OPEN_MAX') }}}:
case {{{ cDefine('_SC_XOPEN_STREAMS') }}}:
case {{{ cDefine('_SC_XBS5_LP64_OFF64') }}}:
case {{{ cDefine('_SC_XBS5_LPBIG_OFFBIG') }}}:
case {{{ cDefine('_SC_AIO_LISTIO_MAX') }}}:
case {{{ cDefine('_SC_AIO_MAX') }}}:
case {{{ cDefine('_SC_SPORADIC_SERVER') }}}:
case {{{ cDefine('_SC_THREAD_SPORADIC_SERVER') }}}:
case {{{ cDefine('_SC_TRACE') }}}:
case {{{ cDefine('_SC_TRACE_EVENT_FILTER') }}}:
case {{{ cDefine('_SC_TRACE_EVENT_NAME_MAX') }}}:
case {{{ cDefine('_SC_TRACE_INHERIT') }}}:
case {{{ cDefine('_SC_TRACE_LOG') }}}:
case {{{ cDefine('_SC_TRACE_NAME_MAX') }}}:
case {{{ cDefine('_SC_TRACE_SYS_MAX') }}}:
case {{{ cDefine('_SC_TRACE_USER_EVENT_MAX') }}}:
case {{{ cDefine('_SC_TYPED_MEMORY_OBJECTS') }}}:
case {{{ cDefine('_SC_V6_LP64_OFF64') }}}:
case {{{ cDefine('_SC_V6_LPBIG_OFFBIG') }}}:
case {{{ cDefine('_SC_2_FORT_DEV') }}}:
case {{{ cDefine('_SC_2_FORT_RUN') }}}:
case {{{ cDefine('_SC_2_PBS') }}}:
case {{{ cDefine('_SC_2_PBS_ACCOUNTING') }}}:
case {{{ cDefine('_SC_2_PBS_CHECKPOINT') }}}:
case {{{ cDefine('_SC_2_PBS_LOCATE') }}}:
case {{{ cDefine('_SC_2_PBS_MESSAGE') }}}:
case {{{ cDefine('_SC_2_PBS_TRACK') }}}:
case {{{ cDefine('_SC_2_UPE') }}}:
case {{{ cDefine('_SC_THREAD_THREADS_MAX') }}}:
case {{{ cDefine('_SC_SEM_NSEMS_MAX') }}}:
case {{{ cDefine('_SC_SYMLOOP_MAX') }}}:
case {{{ cDefine('_SC_TIMER_MAX') }}}:
return -1;
case {{{ cDefine('_SC_V6_ILP32_OFF32') }}}:
case {{{ cDefine('_SC_V6_ILP32_OFFBIG') }}}:
case {{{ cDefine('_SC_JOB_CONTROL') }}}:
case {{{ cDefine('_SC_REGEXP') }}}:
case {{{ cDefine('_SC_SAVED_IDS') }}}:
case {{{ cDefine('_SC_SHELL') }}}:
case {{{ cDefine('_SC_XBS5_ILP32_OFF32') }}}:
case {{{ cDefine('_SC_XBS5_ILP32_OFFBIG') }}}:
case {{{ cDefine('_SC_XOPEN_CRYPT') }}}:
case {{{ cDefine('_SC_XOPEN_ENH_I18N') }}}:
case {{{ cDefine('_SC_XOPEN_LEGACY') }}}:
case {{{ cDefine('_SC_XOPEN_REALTIME') }}}:
case {{{ cDefine('_SC_XOPEN_REALTIME_THREADS') }}}:
case {{{ cDefine('_SC_XOPEN_SHM') }}}:
case {{{ cDefine('_SC_XOPEN_UNIX') }}}:
return 1;
case {{{ cDefine('_SC_THREAD_KEYS_MAX') }}}:
case {{{ cDefine('_SC_IOV_MAX') }}}:
case {{{ cDefine('_SC_GETGR_R_SIZE_MAX') }}}:
case {{{ cDefine('_SC_GETPW_R_SIZE_MAX') }}}:
case {{{ cDefine('_SC_OPEN_MAX') }}}:
return 1024;
case {{{ cDefine('_SC_RTSIG_MAX') }}}:
case {{{ cDefine('_SC_EXPR_NEST_MAX') }}}:
case {{{ cDefine('_SC_TTY_NAME_MAX') }}}:
return 32;
case {{{ cDefine('_SC_ATEXIT_MAX') }}}:
case {{{ cDefine('_SC_DELAYTIMER_MAX') }}}:
case {{{ cDefine('_SC_SEM_VALUE_MAX') }}}:
return 2147483647;
case {{{ cDefine('_SC_SIGQUEUE_MAX') }}}:
case {{{ cDefine('_SC_CHILD_MAX') }}}:
return 47839;
case {{{ cDefine('_SC_BC_SCALE_MAX') }}}:
case {{{ cDefine('_SC_BC_BASE_MAX') }}}:
return 99;
case {{{ cDefine('_SC_LINE_MAX') }}}:
case {{{ cDefine('_SC_BC_DIM_MAX') }}}:
return 2048;
case {{{ cDefine('_SC_ARG_MAX') }}}: return 2097152;
case {{{ cDefine('_SC_NGROUPS_MAX') }}}: return 65536;
case {{{ cDefine('_SC_MQ_PRIO_MAX') }}}: return 32768;
case {{{ cDefine('_SC_RE_DUP_MAX') }}}: return 32767;
case {{{ cDefine('_SC_THREAD_STACK_MIN') }}}: return 16384;
case {{{ cDefine('_SC_BC_STRING_MAX') }}}: return 1000;
case {{{ cDefine('_SC_XOPEN_VERSION') }}}: return 700;
case {{{ cDefine('_SC_LOGIN_NAME_MAX') }}}: return 256;
case {{{ cDefine('_SC_COLL_WEIGHTS_MAX') }}}: return 255;
case {{{ cDefine('_SC_CLK_TCK') }}}: return 100;
case {{{ cDefine('_SC_HOST_NAME_MAX') }}}: return 64;
case {{{ cDefine('_SC_AIO_PRIO_DELTA_MAX') }}}: return 20;
case {{{ cDefine('_SC_STREAM_MAX') }}}: return 16;
case {{{ cDefine('_SC_TZNAME_MAX') }}}: return 6;
case {{{ cDefine('_SC_THREAD_DESTRUCTOR_ITERATIONS') }}}: return 4;
case {{{ cDefine('_SC_NPROCESSORS_ONLN') }}}: {
if (typeof navigator === 'object') return navigator['hardwareConcurrency'] || 1;
return 1;
}
}
setErrNo({{{ cDefine('EINVAL') }}});
return -1;
},
emscripten_get_heap_size: function() {
return HEAPU8.length;
},
#if ABORTING_MALLOC
$abortOnCannotGrowMemory: function(requestedSize) {
#if ASSERTIONS
#if ALLOW_MEMORY_GROWTH
abort('Cannot enlarge memory arrays to size ' + requestedSize + ' bytes (OOM). If you want malloc to return NULL (0) instead of this abort, do not link with -s ABORTING_MALLOC=1 (that is, the default when growth is enabled is to not abort, but you have overridden that)');
#else // ALLOW_MEMORY_GROWTH
abort('Cannot enlarge memory arrays to size ' + requestedSize + ' bytes (OOM). Either (1) compile with -s INITIAL_MEMORY=X with X higher than the current value ' + HEAP8.length + ', (2) compile with -s ALLOW_MEMORY_GROWTH=1 which allows increasing the size at runtime, or (3) if you want malloc to return NULL (0) instead of this abort, compile with -s ABORTING_MALLOC=0 ');
#endif // ALLOW_MEMORY_GROWTH
#else // ASSERTIONS
abort('OOM');
#endif // ASSERTIONS
},
#endif // ABORTING_MALLOC
#if TEST_MEMORY_GROWTH_FAILS
$emscripten_realloc_buffer: function(size) {
return false;
},
#else
// Grows the wasm memory to the given byte size, and updates the JS views to
// it. Returns 1 on success, 0 on error.
$emscripten_realloc_buffer: function(size) {
#if MEMORYPROFILER
var oldHeapSize = buffer.byteLength;
#endif
try {
// round size grow request up to wasm page size (fixed 64KB per spec)
wasmMemory.grow((size - buffer.byteLength + 65535) >>> 16); // .grow() takes a delta compared to the previous size
updateGlobalBufferAndViews(wasmMemory.buffer);
#if MEMORYPROFILER
if (typeof emscriptenMemoryProfiler !== 'undefined') {
emscriptenMemoryProfiler.onMemoryResize(oldHeapSize, buffer.byteLength);
}
#endif
return 1 /*success*/;
} catch(e) {
#if ASSERTIONS
console.error('emscripten_realloc_buffer: Attempted to grow heap from ' + buffer.byteLength + ' bytes to ' + size + ' bytes, but got error: ' + e);
#endif
}
// implicit 0 return to save code size (caller will cast "undefined" into 0
// anyhow)
},
#endif // ~TEST_MEMORY_GROWTH_FAILS
emscripten_resize_heap__deps: ['emscripten_get_heap_size'
#if ASSERTIONS == 2
, 'emscripten_get_now'
#endif
#if ABORTING_MALLOC
, '$abortOnCannotGrowMemory'
#endif
#if ALLOW_MEMORY_GROWTH
, '$emscripten_realloc_buffer'
#endif
],
emscripten_resize_heap: function(requestedSize) {
requestedSize = requestedSize >>> 0;
#if ALLOW_MEMORY_GROWTH == 0
#if ABORTING_MALLOC
abortOnCannotGrowMemory(requestedSize);
#else
return false; // malloc will report failure
#endif // ABORTING_MALLOC
#else // ALLOW_MEMORY_GROWTH == 0
var oldSize = _emscripten_get_heap_size();
// With pthreads, races can happen (another thread might increase the size in between), so return a failure, and let the caller retry.
#if USE_PTHREADS
if (requestedSize <= oldSize) {
return false;
}
#endif // USE_PTHREADS
#if ASSERTIONS && !USE_PTHREADS
assert(requestedSize > oldSize);
#endif
#if EMSCRIPTEN_TRACING
// Report old layout one last time
_emscripten_trace_report_memory_layout();
#endif
// Memory resize rules:
// 1. When resizing, always produce a resized heap that is at least 16MB (to avoid tiny heap sizes receiving lots of repeated resizes at startup)
// 2. Always increase heap size to at least the requested size, rounded up to next page multiple.
// 3a. If MEMORY_GROWTH_LINEAR_STEP == -1, excessively resize the heap geometrically: increase the heap size according to
// MEMORY_GROWTH_GEOMETRIC_STEP factor (default +20%),
// At most overreserve by MEMORY_GROWTH_GEOMETRIC_CAP bytes (default 96MB).
// 3b. If MEMORY_GROWTH_LINEAR_STEP != -1, excessively resize the heap linearly: increase the heap size by at least MEMORY_GROWTH_LINEAR_STEP bytes.
// 4. Max size for the heap is capped at 2048MB-WASM_PAGE_SIZE, or by MAXIMUM_MEMORY, or by ASAN limit, depending on which is smallest
// 5. If we were unable to allocate as much memory, it may be due to over-eager decision to excessively reserve due to (3) above.
// Hence if an allocation fails, cut down on the amount of excess growth, in an attempt to succeed to perform a smaller allocation.
#if MAXIMUM_MEMORY != -1
// A limit was set for how much we can grow. We should not exceed that
// (the wasm binary specifies it, so if we tried, we'd fail anyhow).
var maxHeapSize = {{{ MAXIMUM_MEMORY }}};
#else
var maxHeapSize = {{{ CAN_ADDRESS_2GB ? 4294967296 : 2147483648 }}} - {{{ WASM_PAGE_SIZE }}};
#endif
if (requestedSize > maxHeapSize) {
#if ASSERTIONS
err('Cannot enlarge memory, asked to go up to ' + requestedSize + ' bytes, but the limit is ' + maxHeapSize + ' bytes!');
#endif
#if ABORTING_MALLOC
abortOnCannotGrowMemory(requestedSize);
#else
return false;
#endif
}
var minHeapSize = 16777216;
// Loop through potential heap size increases. If we attempt a too eager reservation that fails, cut down on the
// attempted size and reserve a smaller bump instead. (max 3 times, chosen somewhat arbitrarily)
for(var cutDown = 1; cutDown <= 4; cutDown *= 2) {
#if MEMORY_GROWTH_LINEAR_STEP == -1
var overGrownHeapSize = oldSize * (1 + {{{ MEMORY_GROWTH_GEOMETRIC_STEP }}} / cutDown); // ensure geometric growth
#if MEMORY_GROWTH_GEOMETRIC_CAP
// but limit overreserving (default to capping at +96MB overgrowth at most)
overGrownHeapSize = Math.min(overGrownHeapSize, requestedSize + {{{ MEMORY_GROWTH_GEOMETRIC_CAP }}} );
#endif
#else
var overGrownHeapSize = oldSize + {{{ MEMORY_GROWTH_LINEAR_STEP }}} / cutDown; // ensure linear growth
#endif
var newSize = Math.min(maxHeapSize, alignUp(Math.max(minHeapSize, requestedSize, overGrownHeapSize), {{{ WASM_PAGE_SIZE }}}));
#if ASSERTIONS == 2
var t0 = _emscripten_get_now();
#endif
var replacement = emscripten_realloc_buffer(newSize);
#if ASSERTIONS == 2
var t1 = _emscripten_get_now();
console.log('Heap resize call from ' + oldSize + ' to ' + newSize + ' took ' + (t1 - t0) + ' msecs. Success: ' + !!replacement);
#endif
if (replacement) {
#if ASSERTIONS && WASM2JS
err('Warning: Enlarging memory arrays, this is not fast! ' + [oldSize, newSize]);
#endif
#if EMSCRIPTEN_TRACING
_emscripten_trace_js_log_message("Emscripten", "Enlarging memory arrays from " + oldSize + " to " + newSize);
// And now report the new layout
_emscripten_trace_report_memory_layout();
#endif
return true;
}
}
#if ASSERTIONS
err('Failed to grow the heap from ' + oldSize + ' bytes to ' + newSize + ' bytes, not enough memory!');
#endif
#if ABORTING_MALLOC
abortOnCannotGrowMemory(requestedSize);
#else
return false;
#endif
#endif // ALLOW_MEMORY_GROWTH
},
// Called after wasm grows memory. At that time we need to update the views.
// Without this notification, we'd need to check the buffer in JS every time
// we return from any wasm, which adds overhead. See
// https://github.com/WebAssembly/WASI/issues/82
emscripten_notify_memory_growth: function(memoryIndex) {
#if ASSERTIONS
assert(memoryIndex == 0);
#endif
updateGlobalBufferAndViews(wasmMemory.buffer);
},
system__deps: ['$setErrNo'],
system: function(command) {
#if ENVIRONMENT_MAY_BE_NODE
if (ENVIRONMENT_IS_NODE) {
if (!command) return 1; // shell is available
var cmdstr = UTF8ToString(command);
if (!cmdstr.length) return 0; // this is what glibc seems to do (shell works test?)
var cp = require('child_process');
var ret = cp.spawnSync(cmdstr, [], {shell:true, stdio:'inherit'});
var _W_EXITCODE = function(ret, sig) {
return ((ret) << 8 | (sig));
}
// this really only can happen if process is killed by signal
if (ret.status === null) {
// sadly node doesn't expose such function
var signalToNumber = function(sig) {
// implement only the most common ones, and fallback to SIGINT
switch (sig) {
case 'SIGHUP': return 1;
case 'SIGINT': return 2;
case 'SIGQUIT': return 3;
case 'SIGFPE': return 8;
case 'SIGKILL': return 9;
case 'SIGALRM': return 14;
case 'SIGTERM': return 15;
}
return 2; // SIGINT
}
return _W_EXITCODE(0, signalToNumber(ret.signal));
}
return _W_EXITCODE(ret.status, 0);
}
#endif // ENVIRONMENT_MAY_BE_NODE
// int system(const char *command);
// http://pubs.opengroup.org/onlinepubs/000095399/functions/system.html
// Can't call external programs.
if (!command) return 0; // no shell available
setErrNo({{{ cDefine('EAGAIN') }}});
return -1;
},
// ==========================================================================
// stdlib.h
// ==========================================================================
_ZSt9terminatev__deps: ['exit'],
_ZSt9terminatev: function() {
_exit(-1234);
},
#if MINIMAL_RUNTIME && !EXIT_RUNTIME
atexit__sig: 'v', // atexit unsupported in MINIMAL_RUNTIME
atexit: function(){},
__cxa_atexit: function(){},
#else
atexit__proxy: 'sync',
atexit__sig: 'iii',
atexit: function(func, arg) {
#if EXIT_RUNTIME
__ATEXIT__.unshift({ func: func, arg: arg });
#endif
},
__cxa_atexit: 'atexit',
#endif
// used in rust, clang when doing thread_local statics
#if USE_PTHREADS
__cxa_thread_atexit: 'pthread_cleanup_push',
__cxa_thread_atexit_impl: 'pthread_cleanup_push',
#else
__cxa_thread_atexit: 'atexit',
__cxa_thread_atexit_impl: 'atexit',
#endif
// TODO: There are currently two abort() functions that get imported to asm module scope: the built-in runtime function abort(),
// and this function _abort(). Remove one of these, importing two functions for the same purpose is wasteful.
abort: function() {
#if MINIMAL_RUNTIME
// In MINIMAL_RUNTIME the module object does not exist, so its behavior to abort is to throw directly.
throw 'abort';
#else
abort();
#endif
},
// This object can be modified by the user during startup, which affects
// the initial values of the environment accessible by getenv. (This works
// in both fastcomp and upstream).
$ENV: {},
getloadavg: function(loadavg, nelem) {
// int getloadavg(double loadavg[], int nelem);
// http://linux.die.net/man/3/getloadavg
var limit = Math.min(nelem, 3);
var doubleSize = {{{ Runtime.getNativeTypeSize('double') }}};
for (var i = 0; i < limit; i++) {
{{{ makeSetValue('loadavg', 'i * doubleSize', '0.1', 'double') }}};
}
return limit;
},
#if MIN_CHROME_VERSION < 45 || MIN_EDGE_VERSION < 14 || MIN_FIREFOX_VERSION < 34 || MIN_IE_VERSION != TARGET_NOT_SUPPORTED || MIN_SAFARI_VERSION < 100101 || STANDALONE_WASM
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/copyWithin lists browsers that support TypedArray.prototype.copyWithin, but it
// has outdated information for Safari, saying it would not support it.
// https://github.com/WebKit/webkit/commit/24a800eea4d82d6d595cdfec69d0f68e733b5c52#diff-c484911d8df319ba75fce0d8e7296333R1 suggests support was added on Aug 28, 2015.
// Manual testing suggests:
// Safari/601.1 Version/9.0 on iPhone 4s with iOS 9.3.6 (released September 30, 2015) does not support copyWithin.
// but the following systems do:
// AppleWebKit/602.2.14 Safari/602.1 Version/10.0 Mobile/14B100 iPhone OS 10_1_1 on iPhone 5s with iOS 10.1.1 (released October 31, 2016)
// AppleWebKit/603.3.8 Safari/602.1 Version/10.0 on iPhone 5 with iOS 10.3.4 (released July 22, 2019)
// AppleWebKit/605.1.15 iPhone OS 12_3_1 Version/12.1.1 Safari/604.1 on iPhone SE with iOS 12.3.1
// AppleWebKit/605.1.15 Safari/604.1 Version/13.0.4 iPhone OS 13_3 on iPhone 6s with iOS 13.3
// AppleWebKit/605.1.15 Version/13.0.3 Intel Mac OS X 10_15_1 on Safari 13.0.3 (15608.3.10.1.4) on macOS Catalina 10.15.1
// Hence the support status of .copyWithin() for Safari version range [10.0.0, 10.1.0] is unknown.
emscripten_memcpy_big__import: true,
emscripten_memcpy_big: '= Uint8Array.prototype.copyWithin\n' +
' ? function(dest, src, num) { HEAPU8.copyWithin(dest, src, src + num); }\n' +
' : function(dest, src, num) { HEAPU8.set(HEAPU8.subarray(src, src+num), dest); }\n',
#else
emscripten_memcpy_big: function(dest, src, num) {
HEAPU8.copyWithin(dest, src, src + num);
},
#endif
// ==========================================================================
// assert.h
// ==========================================================================
__assert_fail__sig: 'viiii',
__assert_fail: function(condition, filename, line, func) {
abort('Assertion failed: ' + UTF8ToString(condition) + ', at: ' + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);
},
// ==========================================================================
// pwd.h
// ==========================================================================
// TODO: Implement.
// http://pubs.opengroup.org/onlinepubs/009695399/basedefs/pwd.h.html
getpwuid: function(uid) {
return 0; // NULL
},
// ==========================================================================
// time.h
// ==========================================================================
clock: function() {
if (_clock.start === undefined) _clock.start = Date.now();
return ((Date.now() - _clock.start) * ({{{ cDefine('CLOCKS_PER_SEC') }}} / 1000))|0;
},
time: function(ptr) {
var ret = (Date.now()/1000)|0;
if (ptr) {
{{{ makeSetValue('ptr', 0, 'ret', 'i32') }}};
}
return ret;
},
difftime: function(time1, time0) {
return time1 - time0;
},
mktime__deps: ['tzset'],
mktime__sig: 'ii',
mktime: function(tmPtr) {
_tzset();
var date = new Date({{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_year, 'i32') }}} + 1900,
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_min, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'i32') }}},
0);
// There's an ambiguous hour when the time goes back; the tm_isdst field is
// used to disambiguate it. Date() basically guesses, so we fix it up if it
// guessed wrong, or fill in tm_isdst with the guess if it's -1.
var dst = {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_isdst, 'i32') }}};
var guessedOffset = date.getTimezoneOffset();
var start = new Date(date.getFullYear(), 0, 1);
var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
var winterOffset = start.getTimezoneOffset();
var dstOffset = Math.min(winterOffset, summerOffset); // DST is in December in South
if (dst < 0) {
// Attention: some regions don't have DST at all.
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_isdst, 'Number(summerOffset != winterOffset && dstOffset == guessedOffset)', 'i32') }}};
} else if ((dst > 0) != (dstOffset == guessedOffset)) {
var nonDstOffset = Math.max(winterOffset, summerOffset);
var trueOffset = dst > 0 ? dstOffset : nonDstOffset;
// Don't try setMinutes(date.getMinutes() + ...) -- it's messed up.
date.setTime(date.getTime() + (trueOffset - guessedOffset)*60000);
}
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'date.getDay()', 'i32') }}};
var yday = ((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24))|0;
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_yday, 'yday', 'i32') }}};
// To match expected behavior, update fields from date
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'date.getSeconds()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_min, 'date.getMinutes()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'date.getHours()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'date.getDate()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'date.getMonth()', 'i32') }}};
return (date.getTime() / 1000)|0;
},
timelocal: 'mktime',
#if MINIMAL_RUNTIME
gmtime_r__deps: ['allocateUTF8'],
#endif
gmtime_r__sig: 'iii',
gmtime_r: function(time, tmPtr) {
var date = new Date({{{ makeGetValue('time', 0, 'i32') }}}*1000);
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'date.getUTCSeconds()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_min, 'date.getUTCMinutes()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'date.getUTCHours()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'date.getUTCDate()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'date.getUTCMonth()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_year, 'date.getUTCFullYear()-1900', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'date.getUTCDay()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_gmtoff, '0', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_isdst, '0', 'i32') }}};
var start = Date.UTC(date.getUTCFullYear(), 0, 1, 0, 0, 0, 0);
var yday = ((date.getTime() - start) / (1000 * 60 * 60 * 24))|0;
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_yday, 'yday', 'i32') }}};
// Allocate a string "GMT" for us to point to.
if (!_gmtime_r.GMTString) _gmtime_r.GMTString = allocateUTF8("GMT");
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_zone, '_gmtime_r.GMTString', 'i32') }}};
return tmPtr;
},
__gmtime_r: 'gmtime_r',
timegm__deps: ['tzset'],
timegm: function(tmPtr) {
_tzset();
var time = Date.UTC({{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_year, 'i32') }}} + 1900,
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_min, 'i32') }}},
{{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'i32') }}},
0);
var date = new Date(time);
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'date.getUTCDay()', 'i32') }}};
var start = Date.UTC(date.getUTCFullYear(), 0, 1, 0, 0, 0, 0);
var yday = ((date.getTime() - start) / (1000 * 60 * 60 * 24))|0;
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_yday, 'yday', 'i32') }}};
return (date.getTime() / 1000)|0;
},
localtime_r__deps: ['tzset'],
localtime_r__sig: 'iii',
localtime_r: function(time, tmPtr) {
_tzset();
var date = new Date({{{ makeGetValue('time', 0, 'i32') }}}*1000);
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'date.getSeconds()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_min, 'date.getMinutes()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'date.getHours()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'date.getDate()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'date.getMonth()', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_year, 'date.getFullYear()-1900', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'date.getDay()', 'i32') }}};
var start = new Date(date.getFullYear(), 0, 1);
var yday = ((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24))|0;
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_yday, 'yday', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_gmtoff, '-(date.getTimezoneOffset() * 60)', 'i32') }}};
// Attention: DST is in December in South, and some regions don't have DST at all.
var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
var winterOffset = start.getTimezoneOffset();
var dst = (summerOffset != winterOffset && date.getTimezoneOffset() == Math.min(winterOffset, summerOffset))|0;
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_isdst, 'dst', 'i32') }}};
var zonePtr = {{{ makeGetValue('__get_tzname()', 'dst ? ' + Runtime.QUANTUM_SIZE + ' : 0', 'i32') }}};
{{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_zone, 'zonePtr', 'i32') }}};
return tmPtr;
},
__localtime_r: 'localtime_r',
asctime_r__deps: ['mktime'],
asctime_r__sig: 'iii',
asctime_r: function(tmPtr, buf) {
var date = {
tm_sec: {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'i32') }}},
tm_min: {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_min, 'i32') }}},
tm_hour: {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'i32') }}},
tm_mday: {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'i32') }}},
tm_mon: {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'i32') }}},
tm_year: {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_year, 'i32') }}},
tm_wday: {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'i32') }}}
};
var days = [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ];
var months = [ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ];
var s = days[date.tm_wday] + ' ' + months[date.tm_mon] +
(date.tm_mday < 10 ? ' ' : ' ') + date.tm_mday +
(date.tm_hour < 10 ? ' 0' : ' ') + date.tm_hour +
(date.tm_min < 10 ? ':0' : ':') + date.tm_min +
(date.tm_sec < 10 ? ':0' : ':') + date.tm_sec +
' ' + (1900 + date.tm_year) + "\n";
// asctime_r is specced to behave in an undefined manner if the algorithm would attempt
// to write out more than 26 bytes (including the null terminator).
// See http://pubs.opengroup.org/onlinepubs/9699919799/functions/asctime.html
// Our undefined behavior is to truncate the write to at most 26 bytes, including null terminator.
stringToUTF8(s, buf, 26);
return buf;
},
__asctime_r: 'asctime_r',
ctime_r__deps: ['localtime_r', 'asctime_r'],
ctime_r__sig: 'iii',
ctime_r: function(time, buf) {
var stack = stackSave();
var rv = _asctime_r(_localtime_r(time, stackAlloc({{{ C_STRUCTS.tm.__size__ }}})), buf);
stackRestore(stack);
return rv;
},
__ctime_r: 'ctime_r',
dysize: function(year) {
var leap = ((year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)));
return leap ? 366 : 365;
},
// TODO: Initialize these to defaults on startup from system settings.
// Note: glibc has one fewer underscore for all of these. Also used in other related functions (timegm)
tzset__proxy: 'sync',
tzset__sig: 'v',
#if MINIMAL_RUNTIME
tzset__deps: ['$allocateUTF8'],
#endif
tzset: function() {
// TODO: Use (malleable) environment variables instead of system settings.
if (_tzset.called) return;
_tzset.called = true;
var currentYear = new Date().getFullYear();
var winter = new Date(currentYear, 0, 1);
var summer = new Date(currentYear, 6, 1);
var winterOffset = winter.getTimezoneOffset();
var summerOffset = summer.getTimezoneOffset();
// Local standard timezone offset. Local standard time is not adjusted for daylight savings.
// This code uses the fact that getTimezoneOffset returns a greater value during Standard Time versus Daylight Saving Time (DST).
// Thus it determines the expected output during Standard Time, and it compares whether the output of the given date the same (Standard) or less (DST).
var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
// timezone is specified as seconds west of UTC ("The external variable
// `timezone` shall be set to the difference, in seconds, between
// Coordinated Universal Time (UTC) and local standard time."), the same
// as returned by stdTimezoneOffset.
// See http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html
{{{ makeSetValue('__get_timezone()', '0', 'stdTimezoneOffset * 60', 'i32') }}};
{{{ makeSetValue('__get_daylight()', '0', 'Number(winterOffset != summerOffset)', 'i32') }}};
function extractZone(date) {
var match = date.toTimeString().match(/\(([A-Za-z ]+)\)$/);
return match ? match[1] : "GMT";
};
var winterName = extractZone(winter);
var summerName = extractZone(summer);
var winterNamePtr = allocateUTF8(winterName);
var summerNamePtr = allocateUTF8(summerName);
if (summerOffset < winterOffset) {
// Northern hemisphere
{{{ makeSetValue('__get_tzname()', '0', 'winterNamePtr', 'i32') }}};
{{{ makeSetValue('__get_tzname()', Runtime.QUANTUM_SIZE, 'summerNamePtr', 'i32') }}};
} else {
{{{ makeSetValue('__get_tzname()', '0', 'summerNamePtr', 'i32') }}};
{{{ makeSetValue('__get_tzname()', Runtime.QUANTUM_SIZE, 'winterNamePtr', 'i32') }}};
}
},
stime__deps: ['$setErrNo'],
stime: function(when) {
setErrNo({{{ cDefine('EPERM') }}});
return -1;
},
__map_file__deps: ['$setErrNo'],
__map_file: function(pathname, size) {
setErrNo({{{ cDefine('EPERM') }}});
return -1;
},
_MONTH_DAYS_REGULAR: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
_MONTH_DAYS_LEAP: [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
_isLeapYear: function(year) {
return year%4 === 0 && (year%100 !== 0 || year%400 === 0);
},
_arraySum: function(array, index) {
var sum = 0;
for (var i = 0; i <= index; sum += array[i++]) {
// no-op
}
return sum;
},
_addDays__deps: ['_isLeapYear', '_MONTH_DAYS_LEAP', '_MONTH_DAYS_REGULAR'],
_addDays: function(date, days) {
var newDate = new Date(date.getTime());
while(days > 0) {
var leap = __isLeapYear(newDate.getFullYear());
var currentMonth = newDate.getMonth();
var daysInCurrentMonth = (leap ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR)[currentMonth];
if (days > daysInCurrentMonth-newDate.getDate()) {
// we spill over to next month
days -= (daysInCurrentMonth-newDate.getDate()+1);
newDate.setDate(1);
if (currentMonth < 11) {
newDate.setMonth(currentMonth+1)
} else {
newDate.setMonth(0);
newDate.setFullYear(newDate.getFullYear()+1);
}
} else {
// we stay in current month
newDate.setDate(newDate.getDate()+days);
return newDate;
}
}
return newDate;
},
// Note: this is not used in STANDALONE_WASM mode, because it is more
// compact to do it in JS.
strftime__deps: ['_isLeapYear', '_arraySum', '_addDays', '_MONTH_DAYS_REGULAR', '_MONTH_DAYS_LEAP'
#if MINIMAL_RUNTIME
, '$intArrayFromString', '$writeArrayToMemory'
#endif
],
strftime: function(s, maxsize, format, tm) {
// size_t strftime(char *restrict s, size_t maxsize, const char *restrict format, const struct tm *restrict timeptr);
// http://pubs.opengroup.org/onlinepubs/009695399/functions/strftime.html
var tm_zone = {{{ makeGetValue('tm', C_STRUCTS.tm.tm_zone, 'i32') }}};
var date = {
tm_sec: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_sec, 'i32') }}},
tm_min: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_min, 'i32') }}},
tm_hour: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_hour, 'i32') }}},
tm_mday: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_mday, 'i32') }}},
tm_mon: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_mon, 'i32') }}},
tm_year: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_year, 'i32') }}},
tm_wday: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_wday, 'i32') }}},
tm_yday: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_yday, 'i32') }}},
tm_isdst: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_isdst, 'i32') }}},
tm_gmtoff: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_gmtoff, 'i32') }}},
tm_zone: tm_zone ? UTF8ToString(tm_zone) : ''
};
var pattern = UTF8ToString(format);
// expand format
var EXPANSION_RULES_1 = {
'%c': '%a %b %d %H:%M:%S %Y', // Replaced by the locale's appropriate date and time representation - e.g., Mon Aug 3 14:02:01 2013
'%D': '%m/%d/%y', // Equivalent to %m / %d / %y
'%F': '%Y-%m-%d', // Equivalent to %Y - %m - %d
'%h': '%b', // Equivalent to %b
'%r': '%I:%M:%S %p', // Replaced by the time in a.m. and p.m. notation
'%R': '%H:%M', // Replaced by the time in 24-hour notation
'%T': '%H:%M:%S', // Replaced by the time
'%x': '%m/%d/%y', // Replaced by the locale's appropriate date representation
'%X': '%H:%M:%S', // Replaced by the locale's appropriate time representation
// Modified Conversion Specifiers
'%Ec': '%c', // Replaced by the locale's alternative appropriate date and time representation.
'%EC': '%C', // Replaced by the name of the base year (period) in the locale's alternative representation.
'%Ex': '%m/%d/%y', // Replaced by the locale's alternative date representation.
'%EX': '%H:%M:%S', // Replaced by the locale's alternative time representation.
'%Ey': '%y', // Replaced by the offset from %EC (year only) in the locale's alternative representation.
'%EY': '%Y', // Replaced by the full alternative year representation.
'%Od': '%d', // Replaced by the day of the month, using the locale's alternative numeric symbols, filled as needed with leading zeros if there is any alternative symbol for zero; otherwise, with leading <space> characters.
'%Oe': '%e', // Replaced by the day of the month, using the locale's alternative numeric symbols, filled as needed with leading <space> characters.
'%OH': '%H', // Replaced by the hour (24-hour clock) using the locale's alternative numeric symbols.
'%OI': '%I', // Replaced by the hour (12-hour clock) using the locale's alternative numeric symbols.
'%Om': '%m', // Replaced by the month using the locale's alternative numeric symbols.
'%OM': '%M', // Replaced by the minutes using the locale's alternative numeric symbols.
'%OS': '%S', // Replaced by the seconds using the locale's alternative numeric symbols.
'%Ou': '%u', // Replaced by the weekday as a number in the locale's alternative representation (Monday=1).
'%OU': '%U', // Replaced by the week number of the year (Sunday as the first day of the week, rules corresponding to %U ) using the locale's alternative numeric symbols.
'%OV': '%V', // Replaced by the week number of the year (Monday as the first day of the week, rules corresponding to %V ) using the locale's alternative numeric symbols.
'%Ow': '%w', // Replaced by the number of the weekday (Sunday=0) using the locale's alternative numeric symbols.
'%OW': '%W', // Replaced by the week number of the year (Monday as the first day of the week) using the locale's alternative numeric symbols.
'%Oy': '%y', // Replaced by the year (offset from %C ) using the locale's alternative numeric symbols.
};
for (var rule in EXPANSION_RULES_1) {
pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_1[rule]);
}
var WEEKDAYS = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
var MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
function leadingSomething(value, digits, character) {
var str = typeof value === 'number' ? value.toString() : (value || '');
while (str.length < digits) {
str = character[0]+str;
}
return str;
}
function leadingNulls(value, digits) {
return leadingSomething(value, digits, '0');
}
function compareByDay(date1, date2) {
function sgn(value) {
return value < 0 ? -1 : (value > 0 ? 1 : 0);
}
var compare;
if ((compare = sgn(date1.getFullYear()-date2.getFullYear())) === 0) {
if ((compare = sgn(date1.getMonth()-date2.getMonth())) === 0) {
compare = sgn(date1.getDate()-date2.getDate());
}
}
return compare;
}
function getFirstWeekStartDate(janFourth) {
switch (janFourth.getDay()) {
case 0: // Sunday
return new Date(janFourth.getFullYear()-1, 11, 29);
case 1: // Monday
return janFourth;
case 2: // Tuesday
return new Date(janFourth.getFullYear(), 0, 3);
case 3: // Wednesday
return new Date(janFourth.getFullYear(), 0, 2);
case 4: // Thursday
return new Date(janFourth.getFullYear(), 0, 1);
case 5: // Friday
return new Date(janFourth.getFullYear()-1, 11, 31);
case 6: // Saturday
return new Date(janFourth.getFullYear()-1, 11, 30);
}
}
function getWeekBasedYear(date) {
var thisDate = __addDays(new Date(date.tm_year+1900, 0, 1), date.tm_yday);
var janFourthThisYear = new Date(thisDate.getFullYear(), 0, 4);
var janFourthNextYear = new Date(thisDate.getFullYear()+1, 0, 4);
var firstWeekStartThisYear = getFirstWeekStartDate(janFourthThisYear);
var firstWeekStartNextYear = getFirstWeekStartDate(janFourthNextYear);
if (compareByDay(firstWeekStartThisYear, thisDate) <= 0) {
// this date is after the start of the first week of this year
if (compareByDay(firstWeekStartNextYear, thisDate) <= 0) {
return thisDate.getFullYear()+1;
} else {
return thisDate.getFullYear();
}
} else {
return thisDate.getFullYear()-1;
}
}
var EXPANSION_RULES_2 = {
'%a': function(date) {
return WEEKDAYS[date.tm_wday].substring(0,3);
},
'%A': function(date) {
return WEEKDAYS[date.tm_wday];
},
'%b': function(date) {
return MONTHS[date.tm_mon].substring(0,3);
},
'%B': function(date) {
return MONTHS[date.tm_mon];
},
'%C': function(date) {
var year = date.tm_year+1900;
return leadingNulls((year/100)|0,2);
},
'%d': function(date) {
return leadingNulls(date.tm_mday, 2);
},
'%e': function(date) {
return leadingSomething(date.tm_mday, 2, ' ');
},
'%g': function(date) {
// %g, %G, and %V give values according to the ISO 8601:2000 standard week-based year.
// In this system, weeks begin on a Monday and week 1 of the year is the week that includes
// January 4th, which is also the week that includes the first Thursday of the year, and
// is also the first week that contains at least four days in the year.
// If the first Monday of January is the 2nd, 3rd, or 4th, the preceding days are part of
// the last week of the preceding year; thus, for Saturday 2nd January 1999,
// %G is replaced by 1998 and %V is replaced by 53. If December 29th, 30th,
// or 31st is a Monday, it and any following days are part of week 1 of the following year.
// Thus, for Tuesday 30th December 1997, %G is replaced by 1998 and %V is replaced by 01.
return getWeekBasedYear(date).toString().substring(2);
},
'%G': function(date) {
return getWeekBasedYear(date);
},
'%H': function(date) {
return leadingNulls(date.tm_hour, 2);
},
'%I': function(date) {
var twelveHour = date.tm_hour;
if (twelveHour == 0) twelveHour = 12;
else if (twelveHour > 12) twelveHour -= 12;
return leadingNulls(twelveHour, 2);
},
'%j': function(date) {
// Day of the year (001-366)
return leadingNulls(date.tm_mday+__arraySum(__isLeapYear(date.tm_year+1900) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, date.tm_mon-1), 3);
},
'%m': function(date) {
return leadingNulls(date.tm_mon+1, 2);
},
'%M': function(date) {
return leadingNulls(date.tm_min, 2);
},
'%n': function() {
return '\n';
},
'%p': function(date) {
if (date.tm_hour >= 0 && date.tm_hour < 12) {
return 'AM';
} else {
return 'PM';
}
},
'%S': function(date) {
return leadingNulls(date.tm_sec, 2);
},
'%t': function() {
return '\t';
},
'%u': function(date) {
return date.tm_wday || 7;
},
'%U': function(date) {
// Replaced by the week number of the year as a decimal number [00,53].
// The first Sunday of January is the first day of week 1;
// days in the new year before this are in week 0. [ tm_year, tm_wday, tm_yday]
var janFirst = new Date(date.tm_year+1900, 0, 1);
var firstSunday = janFirst.getDay() === 0 ? janFirst : __addDays(janFirst, 7-janFirst.getDay());
var endDate = new Date(date.tm_year+1900, date.tm_mon, date.tm_mday);
// is target date after the first Sunday?
if (compareByDay(firstSunday, endDate) < 0) {
// calculate difference in days between first Sunday and endDate
var februaryFirstUntilEndMonth = __arraySum(__isLeapYear(endDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, endDate.getMonth()-1)-31;
var firstSundayUntilEndJanuary = 31-firstSunday.getDate();
var days = firstSundayUntilEndJanuary+februaryFirstUntilEndMonth+endDate.getDate();
return leadingNulls(Math.ceil(days/7), 2);
}
return compareByDay(firstSunday, janFirst) === 0 ? '01': '00';
},
'%V': function(date) {
// Replaced by the week number of the year (Monday as the first day of the week)
// as a decimal number [01,53]. If the week containing 1 January has four
// or more days in the new year, then it is considered week 1.
// Otherwise, it is the last week of the previous year, and the next week is week 1.
// Both January 4th and the first Thursday of January are always in week 1. [ tm_year, tm_wday, tm_yday]
var janFourthThisYear = new Date(date.tm_year+1900, 0, 4);
var janFourthNextYear = new Date(date.tm_year+1901, 0, 4);
var firstWeekStartThisYear = getFirstWeekStartDate(janFourthThisYear);
var firstWeekStartNextYear = getFirstWeekStartDate(janFourthNextYear);
var endDate = __addDays(new Date(date.tm_year+1900, 0, 1), date.tm_yday);
if (compareByDay(endDate, firstWeekStartThisYear) < 0) {
// if given date is before this years first week, then it belongs to the 53rd week of last year
return '53';
}
if (compareByDay(firstWeekStartNextYear, endDate) <= 0) {
// if given date is after next years first week, then it belongs to the 01th week of next year
return '01';
}
// given date is in between CW 01..53 of this calendar year
var daysDifference;
if (firstWeekStartThisYear.getFullYear() < date.tm_year+1900) {
// first CW of this year starts last year
daysDifference = date.tm_yday+32-firstWeekStartThisYear.getDate()
} else {
// first CW of this year starts this year
daysDifference = date.tm_yday+1-firstWeekStartThisYear.getDate();
}
return leadingNulls(Math.ceil(daysDifference/7), 2);
},
'%w': function(date) {
return date.tm_wday;
},
'%W': function(date) {
// Replaced by the week number of the year as a decimal number [00,53].
// The first Monday of January is the first day of week 1;
// days in the new year before this are in week 0. [ tm_year, tm_wday, tm_yday]
var janFirst = new Date(date.tm_year, 0, 1);
var firstMonday = janFirst.getDay() === 1 ? janFirst : __addDays(janFirst, janFirst.getDay() === 0 ? 1 : 7-janFirst.getDay()+1);
var endDate = new Date(date.tm_year+1900, date.tm_mon, date.tm_mday);
// is target date after the first Monday?
if (compareByDay(firstMonday, endDate) < 0) {
var februaryFirstUntilEndMonth = __arraySum(__isLeapYear(endDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, endDate.getMonth()-1)-31;
var firstMondayUntilEndJanuary = 31-firstMonday.getDate();
var days = firstMondayUntilEndJanuary+februaryFirstUntilEndMonth+endDate.getDate();
return leadingNulls(Math.ceil(days/7), 2);
}
return compareByDay(firstMonday, janFirst) === 0 ? '01': '00';
},
'%y': function(date) {
// Replaced by the last two digits of the year as a decimal number [00,99]. [ tm_year]
return (date.tm_year+1900).toString().substring(2);
},
'%Y': function(date) {
// Replaced by the year as a decimal number (for example, 1997). [ tm_year]
return date.tm_year+1900;
},
'%z': function(date) {
// Replaced by the offset from UTC in the ISO 8601:2000 standard format ( +hhmm or -hhmm ).
// For example, "-0430" means 4 hours 30 minutes behind UTC (west of Greenwich).
var off = date.tm_gmtoff;
var ahead = off >= 0;
off = Math.abs(off) / 60;
// convert from minutes into hhmm format (which means 60 minutes = 100 units)
off = (off / 60)*100 + (off % 60);
return (ahead ? '+' : '-') + String("0000" + off).slice(-4);
},
'%Z': function(date) {
return date.tm_zone;
},
'%%': function() {
return '%';
}
};
for (var rule in EXPANSION_RULES_2) {
if (pattern.indexOf(rule) >= 0) {
pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_2[rule](date));
}
}
var bytes = intArrayFromString(pattern, false);
if (bytes.length > maxsize) {
return 0;
}
writeArrayToMemory(bytes, s);
return bytes.length-1;
},
strftime_l__deps: ['strftime'],
strftime_l: function(s, maxsize, format, tm) {
return _strftime(s, maxsize, format, tm); // no locale support yet
},
strptime__deps: ['_isLeapYear', '_arraySum', '_addDays', '_MONTH_DAYS_REGULAR', '_MONTH_DAYS_LEAP', '$jstoi_q'
#if MINIMAL_RUNTIME
, '$intArrayFromString'
#endif
],
strptime: function(buf, format, tm) {
// char *strptime(const char *restrict buf, const char *restrict format, struct tm *restrict tm);
// http://pubs.opengroup.org/onlinepubs/009695399/functions/strptime.html
var pattern = UTF8ToString(format);
// escape special characters
// TODO: not sure we really need to escape all of these in JS regexps
var SPECIAL_CHARS = '\\!@#$^&*()+=-[]/{}|:<>?,.';
for (var i=0, ii=SPECIAL_CHARS.length; i<ii; ++i) {
pattern = pattern.replace(new RegExp('\\'+SPECIAL_CHARS[i], 'g'), '\\'+SPECIAL_CHARS[i]);
}
// reduce number of matchers
var EQUIVALENT_MATCHERS = {
'%A': '%a',
'%B': '%b',
'%c': '%a %b %d %H:%M:%S %Y',
'%D': '%m\\/%d\\/%y',
'%e': '%d',
'%F': '%Y-%m-%d',
'%h': '%b',
'%R': '%H\\:%M',
'%r': '%I\\:%M\\:%S\\s%p',
'%T': '%H\\:%M\\:%S',
'%x': '%m\\/%d\\/(?:%y|%Y)',
'%X': '%H\\:%M\\:%S'
};
for (var matcher in EQUIVALENT_MATCHERS) {
pattern = pattern.replace(matcher, EQUIVALENT_MATCHERS[matcher]);
}
// TODO: take care of locale
var DATE_PATTERNS = {
/* weeday name */ '%a': '(?:Sun(?:day)?)|(?:Mon(?:day)?)|(?:Tue(?:sday)?)|(?:Wed(?:nesday)?)|(?:Thu(?:rsday)?)|(?:Fri(?:day)?)|(?:Sat(?:urday)?)',
/* month name */ '%b': '(?:Jan(?:uary)?)|(?:Feb(?:ruary)?)|(?:Mar(?:ch)?)|(?:Apr(?:il)?)|May|(?:Jun(?:e)?)|(?:Jul(?:y)?)|(?:Aug(?:ust)?)|(?:Sep(?:tember)?)|(?:Oct(?:ober)?)|(?:Nov(?:ember)?)|(?:Dec(?:ember)?)',
/* century */ '%C': '\\d\\d',
/* day of month */ '%d': '0[1-9]|[1-9](?!\\d)|1\\d|2\\d|30|31',
/* hour (24hr) */ '%H': '\\d(?!\\d)|[0,1]\\d|20|21|22|23',
/* hour (12hr) */ '%I': '\\d(?!\\d)|0\\d|10|11|12',
/* day of year */ '%j': '00[1-9]|0?[1-9](?!\\d)|0?[1-9]\\d(?!\\d)|[1,2]\\d\\d|3[0-6]\\d',
/* month */ '%m': '0[1-9]|[1-9](?!\\d)|10|11|12',
/* minutes */ '%M': '0\\d|\\d(?!\\d)|[1-5]\\d',
/* whitespace */ '%n': '\\s',
/* AM/PM */ '%p': 'AM|am|PM|pm|A\\.M\\.|a\\.m\\.|P\\.M\\.|p\\.m\\.',
/* seconds */ '%S': '0\\d|\\d(?!\\d)|[1-5]\\d|60',
/* week number */ '%U': '0\\d|\\d(?!\\d)|[1-4]\\d|50|51|52|53',
/* week number */ '%W': '0\\d|\\d(?!\\d)|[1-4]\\d|50|51|52|53',
/* weekday number */ '%w': '[0-6]',
/* 2-digit year */ '%y': '\\d\\d',
/* 4-digit year */ '%Y': '\\d\\d\\d\\d',
/* % */ '%%': '%',
/* whitespace */ '%t': '\\s',
};
var MONTH_NUMBERS = {JAN: 0, FEB: 1, MAR: 2, APR: 3, MAY: 4, JUN: 5, JUL: 6, AUG: 7, SEP: 8, OCT: 9, NOV: 10, DEC: 11};
var DAY_NUMBERS_SUN_FIRST = {SUN: 0, MON: 1, TUE: 2, WED: 3, THU: 4, FRI: 5, SAT: 6};
var DAY_NUMBERS_MON_FIRST = {MON: 0, TUE: 1, WED: 2, THU: 3, FRI: 4, SAT: 5, SUN: 6};
for (var datePattern in DATE_PATTERNS) {
pattern = pattern.replace(datePattern, '('+datePattern+DATE_PATTERNS[datePattern]+')');
}
// take care of capturing groups
var capture = [];
for (var i=pattern.indexOf('%'); i>=0; i=pattern.indexOf('%')) {
capture.push(pattern[i+1]);
pattern = pattern.replace(new RegExp('\\%'+pattern[i+1], 'g'), '');
}
var matches = new RegExp('^'+pattern, "i").exec(UTF8ToString(buf))
// out(UTF8ToString(buf)+ ' is matched by '+((new RegExp('^'+pattern)).source)+' into: '+JSON.stringify(matches));
function initDate() {
function fixup(value, min, max) {
return (typeof value !== 'number' || isNaN(value)) ? min : (value>=min ? (value<=max ? value: max): min);
};
return {
year: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_year, 'i32', 0, 0, 1) }}} + 1900 , 1970, 9999),
month: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_mon, 'i32', 0, 0, 1) }}}, 0, 11),
day: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_mday, 'i32', 0, 0, 1) }}}, 1, 31),
hour: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_hour, 'i32', 0, 0, 1) }}}, 0, 23),
min: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_min, 'i32', 0, 0, 1) }}}, 0, 59),
sec: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_sec, 'i32', 0, 0, 1) }}}, 0, 59)
};
};
if (matches) {
var date = initDate();
var value;
var getMatch = function(symbol) {
var pos = capture.indexOf(symbol);
// check if symbol appears in regexp
if (pos >= 0) {
// return matched value or null (falsy!) for non-matches
return matches[pos+1];
}
return;
};
// seconds
if ((value=getMatch('S'))) {
date.sec = jstoi_q(value);
}
// minutes
if ((value=getMatch('M'))) {
date.min = jstoi_q(value);
}
// hours
if ((value=getMatch('H'))) {
// 24h clock
date.hour = jstoi_q(value);
} else if ((value = getMatch('I'))) {
// AM/PM clock
var hour = jstoi_q(value);
if ((value=getMatch('p'))) {
hour += value.toUpperCase()[0] === 'P' ? 12 : 0;
}
date.hour = hour;
}
// year
if ((value=getMatch('Y'))) {
// parse from four-digit year
date.year = jstoi_q(value);
} else if ((value=getMatch('y'))) {
// parse from two-digit year...
var year = jstoi_q(value);
if ((value=getMatch('C'))) {
// ...and century
year += jstoi_q(value)*100;
} else {
// ...and rule-of-thumb
year += year<69 ? 2000 : 1900;
}
date.year = year;
}
// month
if ((value=getMatch('m'))) {
// parse from month number
date.month = jstoi_q(value)-1;
} else if ((value=getMatch('b'))) {
// parse from month name
date.month = MONTH_NUMBERS[value.substring(0,3).toUpperCase()] || 0;
// TODO: derive month from day in year+year, week number+day of week+year
}
// day
if ((value=getMatch('d'))) {
// get day of month directly
date.day = jstoi_q(value);
} else if ((value=getMatch('j'))) {
// get day of month from day of year ...
var day = jstoi_q(value);
var leapYear = __isLeapYear(date.year);
for (var month=0; month<12; ++month) {
var daysUntilMonth = __arraySum(leapYear ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, month-1);
if (day<=daysUntilMonth+(leapYear ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR)[month]) {
date.day = day-daysUntilMonth;
}
}
} else if ((value=getMatch('a'))) {
// get day of month from weekday ...
var weekDay = value.substring(0,3).toUpperCase();
if ((value=getMatch('U'))) {
// ... and week number (Sunday being first day of week)
// Week number of the year (Sunday as the first day of the week) as a decimal number [00,53].
// All days in a new year preceding the first Sunday are considered to be in week 0.
var weekDayNumber = DAY_NUMBERS_SUN_FIRST[weekDay];
var weekNumber = jstoi_q(value);
// January 1st
var janFirst = new Date(date.year, 0, 1);
var endDate;
if (janFirst.getDay() === 0) {
// Jan 1st is a Sunday, and, hence in the 1st CW
endDate = __addDays(janFirst, weekDayNumber+7*(weekNumber-1));
} else {
// Jan 1st is not a Sunday, and, hence still in the 0th CW
endDate = __addDays(janFirst, 7-janFirst.getDay()+weekDayNumber+7*(weekNumber-1));
}
date.day = endDate.getDate();
date.month = endDate.getMonth();
} else if ((value=getMatch('W'))) {
// ... and week number (Monday being first day of week)
// Week number of the year (Monday as the first day of the week) as a decimal number [00,53].
// All days in a new year preceding the first Monday are considered to be in week 0.
var weekDayNumber = DAY_NUMBERS_MON_FIRST[weekDay];
var weekNumber = jstoi_q(value);
// January 1st
var janFirst = new Date(date.year, 0, 1);
var endDate;
if (janFirst.getDay()===1) {
// Jan 1st is a Monday, and, hence in the 1st CW
endDate = __addDays(janFirst, weekDayNumber+7*(weekNumber-1));
} else {
// Jan 1st is not a Monday, and, hence still in the 0th CW
endDate = __addDays(janFirst, 7-janFirst.getDay()+1+weekDayNumber+7*(weekNumber-1));
}
date.day = endDate.getDate();
date.month = endDate.getMonth();
}
}
/*
tm_sec int seconds after the minute 0-61*
tm_min int minutes after the hour 0-59
tm_hour int hours since midnight 0-23
tm_mday int day of the month 1-31
tm_mon int months since January 0-11
tm_year int years since 1900
tm_wday int days since Sunday 0-6
tm_yday int days since January 1 0-365
tm_isdst int Daylight Saving Time flag
*/
var fullDate = new Date(date.year, date.month, date.day, date.hour, date.min, date.sec, 0);
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_sec, 'fullDate.getSeconds()', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_min, 'fullDate.getMinutes()', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_hour, 'fullDate.getHours()', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_mday, 'fullDate.getDate()', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_mon, 'fullDate.getMonth()', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_year, 'fullDate.getFullYear()-1900', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_wday, 'fullDate.getDay()', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_yday, '__arraySum(__isLeapYear(fullDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, fullDate.getMonth()-1)+fullDate.getDate()-1', 'i32') }}};
{{{ makeSetValue('tm', C_STRUCTS.tm.tm_isdst, '0', 'i32') }}};
// we need to convert the matched sequence into an integer array to take care of UTF-8 characters > 0x7F
// TODO: not sure that intArrayFromString handles all unicode characters correctly
return buf+intArrayFromString(matches[0]).length-1;
}
return 0;
},
strptime_l__deps: ['strptime'],
strptime_l: function(buf, format, tm) {
return _strptime(buf, format, tm); // no locale support yet
},
getdate: function(string) {
// struct tm *getdate(const char *string);
// http://pubs.opengroup.org/onlinepubs/009695399/functions/getdate.html
// TODO: Implement.
return 0;
},
timespec_get__deps: ['clock_gettime', '$setErrNo'],
timespec_get: function(ts, base) {
//int timespec_get(struct timespec *ts, int base);
if (base !== {{{ cDefine('TIME_UTC') }}}) {
// There is no other implemented value than TIME_UTC; all other values are considered erroneous.
setErrNo({{{ cDefine('EINVAL') }}});
return 0;
}
var ret = _clock_gettime({{{ cDefine('CLOCK_REALTIME') }}}, ts);
return ret < 0 ? 0 : base;
},
// ==========================================================================
// sys/time.h
// ==========================================================================
clock_gettime__sig: 'iii',
clock_gettime__deps: ['emscripten_get_now', 'emscripten_get_now_is_monotonic', '$setErrNo'],
clock_gettime: function(clk_id, tp) {
// int clock_gettime(clockid_t clk_id, struct timespec *tp);
var now;
if (clk_id === {{{ cDefine('CLOCK_REALTIME') }}}) {
now = Date.now();
} else if ((clk_id === {{{ cDefine('CLOCK_MONOTONIC') }}} || clk_id === {{{ cDefine('CLOCK_MONOTONIC_RAW') }}}) && _emscripten_get_now_is_monotonic) {
now = _emscripten_get_now();
} else {
setErrNo({{{ cDefine('EINVAL') }}});
return -1;
}
{{{ makeSetValue('tp', C_STRUCTS.timespec.tv_sec, '(now/1000)|0', 'i32') }}}; // seconds
{{{ makeSetValue('tp', C_STRUCTS.timespec.tv_nsec, '((now % 1000)*1000*1000)|0', 'i32') }}}; // nanoseconds
return 0;
},
__clock_gettime__sig: 'iii',
__clock_gettime: 'clock_gettime', // musl internal alias
clock_getres__deps: ['emscripten_get_now_res', 'emscripten_get_now_is_monotonic', '$setErrNo'],
clock_getres: function(clk_id, res) {
// int clock_getres(clockid_t clk_id, struct timespec *res);
var nsec;
if (clk_id === {{{ cDefine('CLOCK_REALTIME') }}}) {
nsec = 1000 * 1000; // educated guess that it's milliseconds
} else if (clk_id === {{{ cDefine('CLOCK_MONOTONIC') }}} && _emscripten_get_now_is_monotonic) {
nsec = _emscripten_get_now_res();
} else {
setErrNo({{{ cDefine('EINVAL') }}});
return -1;
}
{{{ makeSetValue('res', C_STRUCTS.timespec.tv_sec, '(nsec/1000000000)|0', 'i32') }}};
{{{ makeSetValue('res', C_STRUCTS.timespec.tv_nsec, 'nsec', 'i32') }}} // resolution is nanoseconds
return 0;
},
clock_getcpuclockid: function(pid, clk_id) {
if (pid < 0) return {{{ cDefine('ESRCH') }}};
if (pid !== 0 && pid !== {{{ PROCINFO.pid }}}) return {{{ cDefine('ENOSYS') }}};
if (clk_id) {{{ makeSetValue('clk_id', 0, 2/*CLOCK_PROCESS_CPUTIME_ID*/, 'i32') }}};
return 0;
},
// http://pubs.opengroup.org/onlinepubs/000095399/basedefs/sys/time.h.html
gettimeofday: function(ptr) {
var now = Date.now();
{{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_sec, '(now/1000)|0', 'i32') }}}; // seconds
{{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_usec, '((now % 1000)*1000)|0', 'i32') }}}; // microseconds
return 0;
},
// ==========================================================================
// sys/timeb.h
// ==========================================================================
ftime: function(p) {
var millis = Date.now();
{{{ makeSetValue('p', C_STRUCTS.timeb.time, '(millis/1000)|0', 'i32') }}};
{{{ makeSetValue('p', C_STRUCTS.timeb.millitm, 'millis % 1000', 'i16') }}};
{{{ makeSetValue('p', C_STRUCTS.timeb.timezone, '0', 'i16') }}}; // Obsolete field
{{{ makeSetValue('p', C_STRUCTS.timeb.dstflag, '0', 'i16') }}}; // Obsolete field
return 0;
},
// ==========================================================================
// sys/times.h
// ==========================================================================
times: function(buffer) {
// clock_t times(struct tms *buffer);
// http://pubs.opengroup.org/onlinepubs/009695399/functions/times.html
// NOTE: This is fake, since we can't calculate real CPU time usage in JS.
if (buffer !== 0) {
_memset(buffer, 0, {{{ C_STRUCTS.tms.__size__ }}});
}
return 0;
},
// ==========================================================================
// sys/types.h
// ==========================================================================
// http://www.kernel.org/doc/man-pages/online/pages/man3/minor.3.html
makedev__sig: 'iii',
makedev: function(maj, min) {
return ((maj) << 8 | (min));
},
gnu_dev_makedev: 'makedev',
major__sig: 'ii',
major: function(dev) {
return ((dev) >> 8);
},
gnu_dev_major: 'major',
minor__sig: 'ii',
minor: function(dev) {
return ((dev) & 0xff);
},
gnu_dev_minor: 'minor',
// ==========================================================================
// setjmp.h
// ==========================================================================
longjmp__sig: 'vii',
#if SUPPORT_LONGJMP
longjmp: function(env, value) {
_setThrew(env, value || 1);
throw 'longjmp';
},
#else
longjmp__deps: [function() {
error('longjmp support was disabled (SUPPORT_LONGJMP=0), but it is required by the code (either set SUPPORT_LONGJMP=1, or remove uses of it in the project)');
}],
// will never be emitted, as the dep errors at compile time
longjmp: function(env, value) {
abort('longjmp not supported');
},
#endif
// TODO: remove these aliases if/when the LLVM backend can stop emitting them
// (it emits them atm as they are generated by an IR pass, at at that time
// they each have a different signature - it is only at the wasm level that
// they become identical).
emscripten_longjmp__sig: 'vii',
emscripten_longjmp: 'longjmp',
// ==========================================================================
// sys/wait.h
// ==========================================================================
wait__deps: ['$setErrNo'],
wait__sig: 'ii',
wait: function(stat_loc) {
// pid_t wait(int *stat_loc);
// http://pubs.opengroup.org/onlinepubs/009695399/functions/wait.html
// Makes no sense in a single-process environment.
setErrNo({{{ cDefine('ECHILD') }}});
return -1;
},
// NOTE: These aren't really the same, but we use the same stub for them all.
waitid: 'wait',
waitpid: 'wait',
wait3: 'wait',
wait4: 'wait',
// ==========================================================================
// errno.h
// ==========================================================================
$ERRNO_CODES: {
EPERM: {{{ cDefine('EPERM') }}},
ENOENT: {{{ cDefine('ENOENT') }}},
ESRCH: {{{ cDefine('ESRCH') }}},
EINTR: {{{ cDefine('EINTR') }}},
EIO: {{{ cDefine('EIO') }}},
ENXIO: {{{ cDefine('ENXIO') }}},
E2BIG: {{{ cDefine('E2BIG') }}},
ENOEXEC: {{{ cDefine('ENOEXEC') }}},
EBADF: {{{ cDefine('EBADF') }}},
ECHILD: {{{ cDefine('ECHILD') }}},
EAGAIN: {{{ cDefine('EAGAIN') }}},
EWOULDBLOCK: {{{ cDefine('EWOULDBLOCK') }}},
ENOMEM: {{{ cDefine('ENOMEM') }}},
EACCES: {{{ cDefine('EACCES') }}},
EFAULT: {{{ cDefine('EFAULT') }}},
ENOTBLK: {{{ cDefine('ENOTBLK') }}},
EBUSY: {{{ cDefine('EBUSY') }}},
EEXIST: {{{ cDefine('EEXIST') }}},
EXDEV: {{{ cDefine('EXDEV') }}},
ENODEV: {{{ cDefine('ENODEV') }}},
ENOTDIR: {{{ cDefine('ENOTDIR') }}},
EISDIR: {{{ cDefine('EISDIR') }}},
EINVAL: {{{ cDefine('EINVAL') }}},
ENFILE: {{{ cDefine('ENFILE') }}},
EMFILE: {{{ cDefine('EMFILE') }}},
ENOTTY: {{{ cDefine('ENOTTY') }}},
ETXTBSY: {{{ cDefine('ETXTBSY') }}},
EFBIG: {{{ cDefine('EFBIG') }}},
ENOSPC: {{{ cDefine('ENOSPC') }}},
ESPIPE: {{{ cDefine('ESPIPE') }}},
EROFS: {{{ cDefine('EROFS') }}},
EMLINK: {{{ cDefine('EMLINK') }}},
EPIPE: {{{ cDefine('EPIPE') }}},
EDOM: {{{ cDefine('EDOM') }}},
ERANGE: {{{ cDefine('ERANGE') }}},
ENOMSG: {{{ cDefine('ENOMSG') }}},
EIDRM: {{{ cDefine('EIDRM') }}},
ECHRNG: {{{ cDefine('ECHRNG') }}},
EL2NSYNC: {{{ cDefine('EL2NSYNC') }}},
EL3HLT: {{{ cDefine('EL3HLT') }}},
EL3RST: {{{ cDefine('EL3RST') }}},
ELNRNG: {{{ cDefine('ELNRNG') }}},
EUNATCH: {{{ cDefine('EUNATCH') }}},
ENOCSI: {{{ cDefine('ENOCSI') }}},
EL2HLT: {{{ cDefine('EL2HLT') }}},
EDEADLK: {{{ cDefine('EDEADLK') }}},
ENOLCK: {{{ cDefine('ENOLCK') }}},
EBADE: {{{ cDefine('EBADE') }}},
EBADR: {{{ cDefine('EBADR') }}},
EXFULL: {{{ cDefine('EXFULL') }}},
ENOANO: {{{ cDefine('ENOANO') }}},
EBADRQC: {{{ cDefine('EBADRQC') }}},
EBADSLT: {{{ cDefine('EBADSLT') }}},
EDEADLOCK: {{{ cDefine('EDEADLOCK') }}},
EBFONT: {{{ cDefine('EBFONT') }}},
ENOSTR: {{{ cDefine('ENOSTR') }}},
ENODATA: {{{ cDefine('ENODATA') }}},
ETIME: {{{ cDefine('ETIME') }}},
ENOSR: {{{ cDefine('ENOSR') }}},
ENONET: {{{ cDefine('ENONET') }}},
ENOPKG: {{{ cDefine('ENOPKG') }}},
EREMOTE: {{{ cDefine('EREMOTE') }}},
ENOLINK: {{{ cDefine('ENOLINK') }}},
EADV: {{{ cDefine('EADV') }}},
ESRMNT: {{{ cDefine('ESRMNT') }}},
ECOMM: {{{ cDefine('ECOMM') }}},
EPROTO: {{{ cDefine('EPROTO') }}},
EMULTIHOP: {{{ cDefine('EMULTIHOP') }}},
EDOTDOT: {{{ cDefine('EDOTDOT') }}},
EBADMSG: {{{ cDefine('EBADMSG') }}},
ENOTUNIQ: {{{ cDefine('ENOTUNIQ') }}},
EBADFD: {{{ cDefine('EBADFD') }}},
EREMCHG: {{{ cDefine('EREMCHG') }}},
ELIBACC: {{{ cDefine('ELIBACC') }}},
ELIBBAD: {{{ cDefine('ELIBBAD') }}},
ELIBSCN: {{{ cDefine('ELIBSCN') }}},
ELIBMAX: {{{ cDefine('ELIBMAX') }}},
ELIBEXEC: {{{ cDefine('ELIBEXEC') }}},
ENOSYS: {{{ cDefine('ENOSYS') }}},
ENOTEMPTY: {{{ cDefine('ENOTEMPTY') }}},
ENAMETOOLONG: {{{ cDefine('ENAMETOOLONG') }}},
ELOOP: {{{ cDefine('ELOOP') }}},
EOPNOTSUPP: {{{ cDefine('EOPNOTSUPP') }}},
EPFNOSUPPORT: {{{ cDefine('EPFNOSUPPORT') }}},
ECONNRESET: {{{ cDefine('ECONNRESET') }}},
ENOBUFS: {{{ cDefine('ENOBUFS') }}},
EAFNOSUPPORT: {{{ cDefine('EAFNOSUPPORT') }}},
EPROTOTYPE: {{{ cDefine('EPROTOTYPE') }}},
ENOTSOCK: {{{ cDefine('ENOTSOCK') }}},
ENOPROTOOPT: {{{ cDefine('ENOPROTOOPT') }}},
ESHUTDOWN: {{{ cDefine('ESHUTDOWN') }}},
ECONNREFUSED: {{{ cDefine('ECONNREFUSED') }}},
EADDRINUSE: {{{ cDefine('EADDRINUSE') }}},
ECONNABORTED: {{{ cDefine('ECONNABORTED') }}},
ENETUNREACH: {{{ cDefine('ENETUNREACH') }}},
ENETDOWN: {{{ cDefine('ENETDOWN') }}},
ETIMEDOUT: {{{ cDefine('ETIMEDOUT') }}},
EHOSTDOWN: {{{ cDefine('EHOSTDOWN') }}},
EHOSTUNREACH: {{{ cDefine('EHOSTUNREACH') }}},
EINPROGRESS: {{{ cDefine('EINPROGRESS') }}},
EALREADY: {{{ cDefine('EALREADY') }}},
EDESTADDRREQ: {{{ cDefine('EDESTADDRREQ') }}},
EMSGSIZE: {{{ cDefine('EMSGSIZE') }}},
EPROTONOSUPPORT: {{{ cDefine('EPROTONOSUPPORT') }}},
ESOCKTNOSUPPORT: {{{ cDefine('ESOCKTNOSUPPORT') }}},
EADDRNOTAVAIL: {{{ cDefine('EADDRNOTAVAIL') }}},
ENETRESET: {{{ cDefine('ENETRESET') }}},
EISCONN: {{{ cDefine('EISCONN') }}},
ENOTCONN: {{{ cDefine('ENOTCONN') }}},
ETOOMANYREFS: {{{ cDefine('ETOOMANYREFS') }}},
EUSERS: {{{ cDefine('EUSERS') }}},
EDQUOT: {{{ cDefine('EDQUOT') }}},
ESTALE: {{{ cDefine('ESTALE') }}},
ENOTSUP: {{{ cDefine('ENOTSUP') }}},
ENOMEDIUM: {{{ cDefine('ENOMEDIUM') }}},
EILSEQ: {{{ cDefine('EILSEQ') }}},
EOVERFLOW: {{{ cDefine('EOVERFLOW') }}},
ECANCELED: {{{ cDefine('ECANCELED') }}},
ENOTRECOVERABLE: {{{ cDefine('ENOTRECOVERABLE') }}},
EOWNERDEAD: {{{ cDefine('EOWNERDEAD') }}},
ESTRPIPE: {{{ cDefine('ESTRPIPE') }}},
},
$ERRNO_MESSAGES: {
0: 'Success',
{{{ cDefine('EPERM') }}}: 'Not super-user',
{{{ cDefine('ENOENT') }}}: 'No such file or directory',
{{{ cDefine('ESRCH') }}}: 'No such process',
{{{ cDefine('EINTR') }}}: 'Interrupted system call',
{{{ cDefine('EIO') }}}: 'I/O error',
{{{ cDefine('ENXIO') }}}: 'No such device or address',
{{{ cDefine('E2BIG') }}}: 'Arg list too long',
{{{ cDefine('ENOEXEC') }}}: 'Exec format error',
{{{ cDefine('EBADF') }}}: 'Bad file number',
{{{ cDefine('ECHILD') }}}: 'No children',
{{{ cDefine('EWOULDBLOCK') }}}: 'No more processes',
{{{ cDefine('ENOMEM') }}}: 'Not enough core',
{{{ cDefine('EACCES') }}}: 'Permission denied',
{{{ cDefine('EFAULT') }}}: 'Bad address',
{{{ cDefine('ENOTBLK') }}}: 'Block device required',
{{{ cDefine('EBUSY') }}}: 'Mount device busy',
{{{ cDefine('EEXIST') }}}: 'File exists',
{{{ cDefine('EXDEV') }}}: 'Cross-device link',
{{{ cDefine('ENODEV') }}}: 'No such device',
{{{ cDefine('ENOTDIR') }}}: 'Not a directory',
{{{ cDefine('EISDIR') }}}: 'Is a directory',
{{{ cDefine('EINVAL') }}}: 'Invalid argument',
{{{ cDefine('ENFILE') }}}: 'Too many open files in system',
{{{ cDefine('EMFILE') }}}: 'Too many open files',
{{{ cDefine('ENOTTY') }}}: 'Not a typewriter',
{{{ cDefine('ETXTBSY') }}}: 'Text file busy',
{{{ cDefine('EFBIG') }}}: 'File too large',
{{{ cDefine('ENOSPC') }}}: 'No space left on device',
{{{ cDefine('ESPIPE') }}}: 'Illegal seek',
{{{ cDefine('EROFS') }}}: 'Read only file system',
{{{ cDefine('EMLINK') }}}: 'Too many links',
{{{ cDefine('EPIPE') }}}: 'Broken pipe',
{{{ cDefine('EDOM') }}}: 'Math arg out of domain of func',
{{{ cDefine('ERANGE') }}}: 'Math result not representable',
{{{ cDefine('ENOMSG') }}}: 'No message of desired type',
{{{ cDefine('EIDRM') }}}: 'Identifier removed',
{{{ cDefine('ECHRNG') }}}: 'Channel number out of range',
{{{ cDefine('EL2NSYNC') }}}: 'Level 2 not synchronized',
{{{ cDefine('EL3HLT') }}}: 'Level 3 halted',
{{{ cDefine('EL3RST') }}}: 'Level 3 reset',
{{{ cDefine('ELNRNG') }}}: 'Link number out of range',
{{{ cDefine('EUNATCH') }}}: 'Protocol driver not attached',
{{{ cDefine('ENOCSI') }}}: 'No CSI structure available',
{{{ cDefine('EL2HLT') }}}: 'Level 2 halted',
{{{ cDefine('EDEADLK') }}}: 'Deadlock condition',
{{{ cDefine('ENOLCK') }}}: 'No record locks available',
{{{ cDefine('EBADE') }}}: 'Invalid exchange',
{{{ cDefine('EBADR') }}}: 'Invalid request descriptor',
{{{ cDefine('EXFULL') }}}: 'Exchange full',
{{{ cDefine('ENOANO') }}}: 'No anode',
{{{ cDefine('EBADRQC') }}}: 'Invalid request code',
{{{ cDefine('EBADSLT') }}}: 'Invalid slot',
{{{ cDefine('EDEADLOCK') }}}: 'File locking deadlock error',
{{{ cDefine('EBFONT') }}}: 'Bad font file fmt',
{{{ cDefine('ENOSTR') }}}: 'Device not a stream',
{{{ cDefine('ENODATA') }}}: 'No data (for no delay io)',
{{{ cDefine('ETIME') }}}: 'Timer expired',
{{{ cDefine('ENOSR') }}}: 'Out of streams resources',
{{{ cDefine('ENONET') }}}: 'Machine is not on the network',
{{{ cDefine('ENOPKG') }}}: 'Package not installed',
{{{ cDefine('EREMOTE') }}}: 'The object is remote',
{{{ cDefine('ENOLINK') }}}: 'The link has been severed',
{{{ cDefine('EADV') }}}: 'Advertise error',
{{{ cDefine('ESRMNT') }}}: 'Srmount error',
{{{ cDefine('ECOMM') }}}: 'Communication error on send',
{{{ cDefine('EPROTO') }}}: 'Protocol error',
{{{ cDefine('EMULTIHOP') }}}: 'Multihop attempted',
{{{ cDefine('EDOTDOT') }}}: 'Cross mount point (not really error)',
{{{ cDefine('EBADMSG') }}}: 'Trying to read unreadable message',
{{{ cDefine('ENOTUNIQ') }}}: 'Given log. name not unique',
{{{ cDefine('EBADFD') }}}: 'f.d. invalid for this operation',
{{{ cDefine('EREMCHG') }}}: 'Remote address changed',
{{{ cDefine('ELIBACC') }}}: 'Can access a needed shared lib',
{{{ cDefine('ELIBBAD') }}}: 'Accessing a corrupted shared lib',
{{{ cDefine('ELIBSCN') }}}: '.lib section in a.out corrupted',
{{{ cDefine('ELIBMAX') }}}: 'Attempting to link in too many libs',
{{{ cDefine('ELIBEXEC') }}}: 'Attempting to exec a shared library',
{{{ cDefine('ENOSYS') }}}: 'Function not implemented',
{{{ cDefine('ENOTEMPTY') }}}: 'Directory not empty',
{{{ cDefine('ENAMETOOLONG') }}}: 'File or path name too long',
{{{ cDefine('ELOOP') }}}: 'Too many symbolic links',
{{{ cDefine('EOPNOTSUPP') }}}: 'Operation not supported on transport endpoint',
{{{ cDefine('EPFNOSUPPORT') }}}: 'Protocol family not supported',
{{{ cDefine('ECONNRESET') }}}: 'Connection reset by peer',
{{{ cDefine('ENOBUFS') }}}: 'No buffer space available',
{{{ cDefine('EAFNOSUPPORT') }}}: 'Address family not supported by protocol family',
{{{ cDefine('EPROTOTYPE') }}}: 'Protocol wrong type for socket',
{{{ cDefine('ENOTSOCK') }}}: 'Socket operation on non-socket',
{{{ cDefine('ENOPROTOOPT') }}}: 'Protocol not available',
{{{ cDefine('ESHUTDOWN') }}}: 'Can\'t send after socket shutdown',
{{{ cDefine('ECONNREFUSED') }}}: 'Connection refused',
{{{ cDefine('EADDRINUSE') }}}: 'Address already in use',
{{{ cDefine('ECONNABORTED') }}}: 'Connection aborted',
{{{ cDefine('ENETUNREACH') }}}: 'Network is unreachable',
{{{ cDefine('ENETDOWN') }}}: 'Network interface is not configured',
{{{ cDefine('ETIMEDOUT') }}}: 'Connection timed out',
{{{ cDefine('EHOSTDOWN') }}}: 'Host is down',
{{{ cDefine('EHOSTUNREACH') }}}: 'Host is unreachable',
{{{ cDefine('EINPROGRESS') }}}: 'Connection already in progress',
{{{ cDefine('EALREADY') }}}: 'Socket already connected',
{{{ cDefine('EDESTADDRREQ') }}}: 'Destination address required',
{{{ cDefine('EMSGSIZE') }}}: 'Message too long',
{{{ cDefine('EPROTONOSUPPORT') }}}: 'Unknown protocol',
{{{ cDefine('ESOCKTNOSUPPORT') }}}: 'Socket type not supported',
{{{ cDefine('EADDRNOTAVAIL') }}}: 'Address not available',
{{{ cDefine('ENETRESET') }}}: 'Connection reset by network',
{{{ cDefine('EISCONN') }}}: 'Socket is already connected',
{{{ cDefine('ENOTCONN') }}}: 'Socket is not connected',
{{{ cDefine('ETOOMANYREFS') }}}: 'Too many references',
{{{ cDefine('EUSERS') }}}: 'Too many users',
{{{ cDefine('EDQUOT') }}}: 'Quota exceeded',
{{{ cDefine('ESTALE') }}}: 'Stale file handle',
{{{ cDefine('ENOTSUP') }}}: 'Not supported',
{{{ cDefine('ENOMEDIUM') }}}: 'No medium (in tape drive)',
{{{ cDefine('EILSEQ') }}}: 'Illegal byte sequence',
{{{ cDefine('EOVERFLOW') }}}: 'Value too large for defined data type',
{{{ cDefine('ECANCELED') }}}: 'Operation canceled',
{{{ cDefine('ENOTRECOVERABLE') }}}: 'State not recoverable',
{{{ cDefine('EOWNERDEAD') }}}: 'Previous owner died',
{{{ cDefine('ESTRPIPE') }}}: 'Streams pipe error',
},
#if SUPPORT_ERRNO
$setErrNo__deps: ['__errno_location'],
$setErrNo: function(value) {
{{{makeSetValue("___errno_location()", 0, 'value', 'i32') }}};
return value;
},
#else
$setErrNo: function(value) {
#if ASSERTIONS
err('failed to set errno from JS');
#endif
return 0;
},
#endif
// ==========================================================================
// arpa/inet.h
// ==========================================================================
#if PROXY_POSIX_SOCKETS == 0
// old ipv4 only functions
inet_addr__deps: ['_inet_pton4_raw'],
inet_addr: function(ptr) {
var addr = __inet_pton4_raw(UTF8ToString(ptr));
if (addr === null) {
return -1;
}
return addr;
},
// ==========================================================================
// netdb.h
// ==========================================================================
_inet_pton4_raw: function(str) {
var b = str.split('.');
for (var i = 0; i < 4; i++) {
var tmp = Number(b[i]);
if (isNaN(tmp)) return null;
b[i] = tmp;
}
return (b[0] | (b[1] << 8) | (b[2] << 16) | (b[3] << 24)) >>> 0;
},
_inet_ntop4_raw: function(addr) {
return (addr & 0xff) + '.' + ((addr >> 8) & 0xff) + '.' + ((addr >> 16) & 0xff) + '.' + ((addr >> 24) & 0xff)
},
_inet_pton6_raw__deps: ['htons', 'ntohs', '$jstoi_q'],
_inet_pton6_raw: function(str) {
var words;
var w, offset, z, i;
/* http://home.deds.nl/~aeron/regex/ */
var valid6regx = /^((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\3)::|:\b|$))|(?!\2\3)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i
var parts = [];
if (!valid6regx.test(str)) {
return null;
}
if (str === "::") {
return [0, 0, 0, 0, 0, 0, 0, 0];
}
// Z placeholder to keep track of zeros when splitting the string on ":"
if (str.indexOf("::") === 0) {
str = str.replace("::", "Z:"); // leading zeros case
} else {
str = str.replace("::", ":Z:");
}
if (str.indexOf(".") > 0) {
// parse IPv4 embedded stress
str = str.replace(new RegExp('[.]', 'g'), ":");
words = str.split(":");
words[words.length-4] = jstoi_q(words[words.length-4]) + jstoi_q(words[words.length-3])*256;
words[words.length-3] = jstoi_q(words[words.length-2]) + jstoi_q(words[words.length-1])*256;
words = words.slice(0, words.length-2);
} else {
words = str.split(":");
}
offset = 0; z = 0;
for (w=0; w < words.length; w++) {
if (typeof words[w] === 'string') {
if (words[w] === 'Z') {
// compressed zeros - write appropriate number of zero words
for (z = 0; z < (8 - words.length+1); z++) {
parts[w+z] = 0;
}
offset = z-1;
} else {
// parse hex to field to 16-bit value and write it in network byte-order
parts[w+offset] = _htons(parseInt(words[w],16));
}
} else {
// parsed IPv4 words
parts[w+offset] = words[w];
}
}
return [
(parts[1] << 16) | parts[0],
(parts[3] << 16) | parts[2],
(parts[5] << 16) | parts[4],
(parts[7] << 16) | parts[6]
];
},
_inet_pton6__deps: ['_inet_pton6_raw'],
_inet_pton6: function(src, dst) {
var ints = __inet_pton6_raw(UTF8ToString(src));
if (ints === null) {
return 0;
}
for (var i = 0; i < 4; i++) {
{{{ makeSetValue('dst', 'i*4', 'ints[i]', 'i32') }}};
}
return 1;
},
_inet_ntop6_raw__deps: ['_inet_ntop4_raw'],
_inet_ntop6_raw: function(ints) {
// ref: http://www.ietf.org/rfc/rfc2373.txt - section 2.5.4
// Format for IPv4 compatible and mapped 128-bit IPv6 Addresses
// 128-bits are split into eight 16-bit words
// stored in network byte order (big-endian)
// | 80 bits | 16 | 32 bits |
// +-----------------------------------------------------------------+
// | 10 bytes | 2 | 4 bytes |
// +--------------------------------------+--------------------------+
// + 5 words | 1 | 2 words |
// +--------------------------------------+--------------------------+
// |0000..............................0000|0000| IPv4 ADDRESS | (compatible)
// +--------------------------------------+----+---------------------+
// |0000..............................0000|FFFF| IPv4 ADDRESS | (mapped)
// +--------------------------------------+----+---------------------+
var str = "";
var word = 0;
var longest = 0;
var lastzero = 0;
var zstart = 0;
var len = 0;
var i = 0;
var parts = [
ints[0] & 0xffff,
(ints[0] >> 16),
ints[1] & 0xffff,
(ints[1] >> 16),
ints[2] & 0xffff,
(ints[2] >> 16),
ints[3] & 0xffff,
(ints[3] >> 16)
];
// Handle IPv4-compatible, IPv4-mapped, loopback and any/unspecified addresses
var hasipv4 = true;
var v4part = "";
// check if the 10 high-order bytes are all zeros (first 5 words)
for (i = 0; i < 5; i++) {
if (parts[i] !== 0) { hasipv4 = false; break; }
}
if (hasipv4) {
// low-order 32-bits store an IPv4 address (bytes 13 to 16) (last 2 words)
v4part = __inet_ntop4_raw(parts[6] | (parts[7] << 16));
// IPv4-mapped IPv6 address if 16-bit value (bytes 11 and 12) == 0xFFFF (6th word)
if (parts[5] === -1) {
str = "::ffff:";
str += v4part;
return str;
}
// IPv4-compatible IPv6 address if 16-bit value (bytes 11 and 12) == 0x0000 (6th word)
if (parts[5] === 0) {
str = "::";
//special case IPv6 addresses
if(v4part === "0.0.0.0") v4part = ""; // any/unspecified address
if(v4part === "0.0.0.1") v4part = "1";// loopback address
str += v4part;
return str;
}
}
// Handle all other IPv6 addresses
// first run to find the longest contiguous zero words
for (word = 0; word < 8; word++) {
if (parts[word] === 0) {
if (word - lastzero > 1) {
len = 0;
}
lastzero = word;
len++;
}
if (len > longest) {
longest = len;
zstart = word - longest + 1;
}
}
for (word = 0; word < 8; word++) {
if (longest > 1) {
// compress contiguous zeros - to produce "::"
if (parts[word] === 0 && word >= zstart && word < (zstart + longest) ) {
if (word === zstart) {
str += ":";
if (zstart === 0) str += ":"; //leading zeros case
}
continue;
}
}
// converts 16-bit words from big-endian to little-endian before converting to hex string
str += Number(_ntohs(parts[word] & 0xffff)).toString(16);
str += word < 7 ? ":" : "";
}
return str;
},
_read_sockaddr__deps: ['$Sockets', '_inet_ntop4_raw', '_inet_ntop6_raw', 'ntohs'],
_read_sockaddr: function (sa, salen) {
// family / port offsets are common to both sockaddr_in and sockaddr_in6
var family = {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in.sin_family, 'i16') }}};
var port = _ntohs({{{ makeGetValue('sa', C_STRUCTS.sockaddr_in.sin_port, 'i16', undefined, true) }}});
var addr;
switch (family) {
case {{{ cDefine('AF_INET') }}}:
if (salen !== {{{ C_STRUCTS.sockaddr_in.__size__ }}}) {
return { errno: {{{ cDefine('EINVAL') }}} };
}
addr = {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in.sin_addr.s_addr, 'i32') }}};
addr = __inet_ntop4_raw(addr);
break;
case {{{ cDefine('AF_INET6') }}}:
if (salen !== {{{ C_STRUCTS.sockaddr_in6.__size__ }}}) {
return { errno: {{{ cDefine('EINVAL') }}} };
}
addr = [
{{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+0, 'i32') }}},
{{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+4, 'i32') }}},
{{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+8, 'i32') }}},
{{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+12, 'i32') }}}
];
addr = __inet_ntop6_raw(addr);
break;
default:
return { errno: {{{ cDefine('EAFNOSUPPORT') }}} };
}
return { family: family, addr: addr, port: port };
},
_write_sockaddr__deps: ['$Sockets', '_inet_pton4_raw', '_inet_pton6_raw'],
_write_sockaddr: function (sa, family, addr, port) {
switch (family) {
case {{{ cDefine('AF_INET') }}}:
addr = __inet_pton4_raw(addr);
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in.sin_family, 'family', 'i16') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in.sin_addr.s_addr, 'addr', 'i32') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in.sin_port, '_htons(port)', 'i16') }}};
break;
case {{{ cDefine('AF_INET6') }}}:
addr = __inet_pton6_raw(addr);
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_family, 'family', 'i32') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+0, 'addr[0]', 'i32') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+4, 'addr[1]', 'i32') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+8, 'addr[2]', 'i32') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+12, 'addr[3]', 'i32') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_port, '_htons(port)', 'i16') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_flowinfo, '0', 'i32') }}};
{{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_scope_id, '0', 'i32') }}};
break;
default:
return { errno: {{{ cDefine('EAFNOSUPPORT') }}} };
}
// kind of lame, but let's match _read_sockaddr's interface
return {};
},
// We can't actually resolve hostnames in the browser, so instead
// we're generating fake IP addresses with lookup_name that we can
// resolve later on with lookup_addr.
// We do the aliasing in 172.29.*.*, giving us 65536 possibilities.
$DNS__deps: ['_inet_pton4_raw', '_inet_pton6_raw'],
$DNS: {
address_map: {
id: 1,
addrs: {},
names: {}
},
lookup_name: function (name) {
// If the name is already a valid ipv4 / ipv6 address, don't generate a fake one.
var res = __inet_pton4_raw(name);
if (res !== null) {
return name;
}
res = __inet_pton6_raw(name);
if (res !== null) {
return name;
}
// See if this name is already mapped.
var addr;
if (DNS.address_map.addrs[name]) {
addr = DNS.address_map.addrs[name];
} else {
var id = DNS.address_map.id++;
assert(id < 65535, 'exceeded max address mappings of 65535');
addr = '172.29.' + (id & 0xff) + '.' + (id & 0xff00);
DNS.address_map.names[addr] = name;
DNS.address_map.addrs[name] = addr;
}
return addr;
},
lookup_addr: function (addr) {
if (DNS.address_map.names[addr]) {
return DNS.address_map.names[addr];
}
return null;
}
},
// note: lots of leaking here!
gethostbyaddr__deps: ['$DNS', '$getHostByName', '_inet_ntop4_raw'],
gethostbyaddr__proxy: 'sync',
gethostbyaddr__sig: 'iiii',
gethostbyaddr: function (addr, addrlen, type) {
if (type !== {{{ cDefine('AF_INET') }}}) {
setErrNo({{{ cDefine('EAFNOSUPPORT') }}});
// TODO: set h_errno
return null;
}
addr = {{{ makeGetValue('addr', '0', 'i32') }}}; // addr is in_addr
var host = __inet_ntop4_raw(addr);
var lookup = DNS.lookup_addr(host);
if (lookup) {
host = lookup;
}
return getHostByName(host);
},
gethostbyname__deps: ['$DNS', '_inet_pton4_raw', '$getHostByName'],
gethostbyname__proxy: 'sync',
gethostbyname__sig: 'ii',
gethostbyname: function(name) {
return getHostByName(UTF8ToString(name));
},
$getHostByName: function(name) {
// generate hostent
var ret = _malloc({{{ C_STRUCTS.hostent.__size__ }}}); // XXX possibly leaked, as are others here
var nameBuf = {{{ makeMalloc('getHostByName', 'name.length+1') }}};
stringToUTF8(name, nameBuf, name.length+1);
{{{ makeSetValue('ret', C_STRUCTS.hostent.h_name, 'nameBuf', 'i8*') }}};
var aliasesBuf = _malloc(4);
{{{ makeSetValue('aliasesBuf', '0', '0', 'i8*') }}};
{{{ makeSetValue('ret', C_STRUCTS.hostent.h_aliases, 'aliasesBuf', 'i8**') }}};
var afinet = {{{ cDefine('AF_INET') }}};
{{{ makeSetValue('ret', C_STRUCTS.hostent.h_addrtype, 'afinet', 'i32') }}};
{{{ makeSetValue('ret', C_STRUCTS.hostent.h_length, '4', 'i32') }}};
var addrListBuf = _malloc(12);
{{{ makeSetValue('addrListBuf', '0', 'addrListBuf+8', 'i32*') }}};
{{{ makeSetValue('addrListBuf', '4', '0', 'i32*') }}};
{{{ makeSetValue('addrListBuf', '8', '__inet_pton4_raw(DNS.lookup_name(name))', 'i32') }}};
{{{ makeSetValue('ret', C_STRUCTS.hostent.h_addr_list, 'addrListBuf', 'i8**') }}};
return ret;
},
gethostbyname_r__deps: ['gethostbyname'],
gethostbyname_r__proxy: 'sync',
gethostbyname_r__sig: 'iiiiiii',
gethostbyname_r: function(name, ret, buf, buflen, out, err) {
var data = _gethostbyname(name);
_memcpy(ret, data, {{{ C_STRUCTS.hostent.__size__ }}});
_free(data);
{{{ makeSetValue('err', '0', '0', 'i32') }}};
{{{ makeSetValue('out', '0', 'ret', '*') }}};
return 0;
},
getaddrinfo__deps: ['$Sockets', '$DNS', '_inet_pton4_raw', '_inet_ntop4_raw', '_inet_pton6_raw', '_inet_ntop6_raw', '_write_sockaddr'],
getaddrinfo__proxy: 'sync',
getaddrinfo__sig: 'iiiii',
getaddrinfo: function(node, service, hint, out) {
// Note getaddrinfo currently only returns a single addrinfo with ai_next defaulting to NULL. When NULL
// hints are specified or ai_family set to AF_UNSPEC or ai_socktype or ai_protocol set to 0 then we
// really should provide a linked list of suitable addrinfo values.
var addrs = [];
var canon = null;
var addr = 0;
var port = 0;
var flags = 0;
var family = {{{ cDefine('AF_UNSPEC') }}};
var type = 0;
var proto = 0;
var ai, last;
function allocaddrinfo(family, type, proto, canon, addr, port) {
var sa, salen, ai;
var res;
salen = family === {{{ cDefine('AF_INET6') }}} ?
{{{ C_STRUCTS.sockaddr_in6.__size__ }}} :
{{{ C_STRUCTS.sockaddr_in.__size__ }}};
addr = family === {{{ cDefine('AF_INET6') }}} ?
__inet_ntop6_raw(addr) :
__inet_ntop4_raw(addr);
sa = _malloc(salen);
res = __write_sockaddr(sa, family, addr, port);
assert(!res.errno);
ai = _malloc({{{ C_STRUCTS.addrinfo.__size__ }}});
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_family, 'family', 'i32') }}};
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_socktype, 'type', 'i32') }}};
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_protocol, 'proto', 'i32') }}};
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_canonname, 'canon', 'i32') }}};
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_addr, 'sa', '*') }}};
if (family === {{{ cDefine('AF_INET6') }}}) {
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_addrlen, C_STRUCTS.sockaddr_in6.__size__, 'i32') }}};
} else {
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_addrlen, C_STRUCTS.sockaddr_in.__size__, 'i32') }}};
}
{{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_next, '0', 'i32') }}};
return ai;
}
if (hint) {
flags = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_flags, 'i32') }}};
family = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_family, 'i32') }}};
type = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_socktype, 'i32') }}};
proto = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_protocol, 'i32') }}};
}
if (type && !proto) {
proto = type === {{{ cDefine('SOCK_DGRAM') }}} ? {{{ cDefine('IPPROTO_UDP') }}} : {{{ cDefine('IPPROTO_TCP') }}};
}
if (!type && proto) {
type = proto === {{{ cDefine('IPPROTO_UDP') }}} ? {{{ cDefine('SOCK_DGRAM') }}} : {{{ cDefine('SOCK_STREAM') }}};
}
// If type or proto are set to zero in hints we should really be returning multiple addrinfo values, but for
// now default to a TCP STREAM socket so we can at least return a sensible addrinfo given NULL hints.
if (proto === 0) {
proto = {{{ cDefine('IPPROTO_TCP') }}};
}
if (type === 0) {
type = {{{ cDefine('SOCK_STREAM') }}};
}
if (!node && !service) {
return {{{ cDefine('EAI_NONAME') }}};
}
if (flags & ~({{{ cDefine('AI_PASSIVE') }}}|{{{ cDefine('AI_CANONNAME') }}}|{{{ cDefine('AI_NUMERICHOST') }}}|
{{{ cDefine('AI_NUMERICSERV') }}}|{{{ cDefine('AI_V4MAPPED') }}}|{{{ cDefine('AI_ALL') }}}|{{{ cDefine('AI_ADDRCONFIG') }}})) {
return {{{ cDefine('EAI_BADFLAGS') }}};
}
if (hint !== 0 && ({{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_flags, 'i32') }}} & {{{ cDefine('AI_CANONNAME') }}}) && !node) {
return {{{ cDefine('EAI_BADFLAGS') }}};
}
if (flags & {{{ cDefine('AI_ADDRCONFIG') }}}) {
// TODO
return {{{ cDefine('EAI_NONAME') }}};
}
if (type !== 0 && type !== {{{ cDefine('SOCK_STREAM') }}} && type !== {{{ cDefine('SOCK_DGRAM') }}}) {
return {{{ cDefine('EAI_SOCKTYPE') }}};
}
if (family !== {{{ cDefine('AF_UNSPEC') }}} && family !== {{{ cDefine('AF_INET') }}} && family !== {{{ cDefine('AF_INET6') }}}) {
return {{{ cDefine('EAI_FAMILY') }}};
}
if (service) {
service = UTF8ToString(service);
port = parseInt(service, 10);
if (isNaN(port)) {
if (flags & {{{ cDefine('AI_NUMERICSERV') }}}) {
return {{{ cDefine('EAI_NONAME') }}};
}
// TODO support resolving well-known service names from:
// http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt
return {{{ cDefine('EAI_SERVICE') }}};
}
}
if (!node) {
if (family === {{{ cDefine('AF_UNSPEC') }}}) {
family = {{{ cDefine('AF_INET') }}};
}
if ((flags & {{{ cDefine('AI_PASSIVE') }}}) === 0) {
if (family === {{{ cDefine('AF_INET') }}}) {
addr = _htonl({{{ cDefine('INADDR_LOOPBACK') }}});
} else {
addr = [0, 0, 0, 1];
}
}
ai = allocaddrinfo(family, type, proto, null, addr, port);
{{{ makeSetValue('out', '0', 'ai', '*') }}};
return 0;
}
//
// try as a numeric address
//
node = UTF8ToString(node);
addr = __inet_pton4_raw(node);
if (addr !== null) {
// incoming node is a valid ipv4 address
if (family === {{{ cDefine('AF_UNSPEC') }}} || family === {{{ cDefine('AF_INET') }}}) {
family = {{{ cDefine('AF_INET') }}};
}
else if (family === {{{ cDefine('AF_INET6') }}} && (flags & {{{ cDefine('AI_V4MAPPED') }}})) {
addr = [0, 0, _htonl(0xffff), addr];
family = {{{ cDefine('AF_INET6') }}};
} else {
return {{{ cDefine('EAI_NONAME') }}};
}
} else {
addr = __inet_pton6_raw(node);
if (addr !== null) {
// incoming node is a valid ipv6 address
if (family === {{{ cDefine('AF_UNSPEC') }}} || family === {{{ cDefine('AF_INET6') }}}) {
family = {{{ cDefine('AF_INET6') }}};
} else {
return {{{ cDefine('EAI_NONAME') }}};
}
}
}
if (addr != null) {
ai = allocaddrinfo(family, type, proto, node, addr, port);
{{{ makeSetValue('out', '0', 'ai', '*') }}};
return 0;
}
if (flags & {{{ cDefine('AI_NUMERICHOST') }}}) {
return {{{ cDefine('EAI_NONAME') }}};
}
//
// try as a hostname
//
// resolve the hostname to a temporary fake address
node = DNS.lookup_name(node);
addr = __inet_pton4_raw(node);
if (family === {{{ cDefine('AF_UNSPEC') }}}) {
family = {{{ cDefine('AF_INET') }}};
} else if (family === {{{ cDefine('AF_INET6') }}}) {
addr = [0, 0, _htonl(0xffff), addr];
}
ai = allocaddrinfo(family, type, proto, null, addr, port);
{{{ makeSetValue('out', '0', 'ai', '*') }}};
return 0;
},
getnameinfo__deps: ['$Sockets', '$DNS', '_read_sockaddr'],
getnameinfo: function (sa, salen, node, nodelen, serv, servlen, flags) {
var info = __read_sockaddr(sa, salen);
if (info.errno) {
return {{{ cDefine('EAI_FAMILY') }}};
}
var port = info.port;
var addr = info.addr;
var overflowed = false;
if (node && nodelen) {
var lookup;
if ((flags & {{{ cDefine('NI_NUMERICHOST') }}}) || !(lookup = DNS.lookup_addr(addr))) {
if (flags & {{{ cDefine('NI_NAMEREQD') }}}) {
return {{{ cDefine('EAI_NONAME') }}};
}
} else {
addr = lookup;
}
var numBytesWrittenExclNull = stringToUTF8(addr, node, nodelen);
if (numBytesWrittenExclNull+1 >= nodelen) {
overflowed = true;
}
}
if (serv && servlen) {
port = '' + port;
var numBytesWrittenExclNull = stringToUTF8(port, serv, servlen);
if (numBytesWrittenExclNull+1 >= servlen) {
overflowed = true;
}
}
if (overflowed) {
// Note: even when we overflow, getnameinfo() is specced to write out the truncated results.
return {{{ cDefine('EAI_OVERFLOW') }}};
}
return 0;
},
// Can't use a literal for $GAI_ERRNO_MESSAGES as was done for $ERRNO_MESSAGES as the keys (e.g. EAI_BADFLAGS)
// are actually negative numbers and you can't have expressions as keys in JavaScript literals.
$GAI_ERRNO_MESSAGES: {},
gai_strerror__deps: ['$GAI_ERRNO_MESSAGES'
#if MINIMAL_RUNTIME
, '$writeAsciiToMemory'
#endif
],
gai_strerror: function(val) {
var buflen = 256;
// On first call to gai_strerror we initialise the buffer and populate the error messages.
if (!_gai_strerror.buffer) {
_gai_strerror.buffer = _malloc(buflen);
GAI_ERRNO_MESSAGES['0'] = 'Success';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_BADFLAGS') }}}] = 'Invalid value for \'ai_flags\' field';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_NONAME') }}}] = 'NAME or SERVICE is unknown';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_AGAIN') }}}] = 'Temporary failure in name resolution';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_FAIL') }}}] = 'Non-recoverable failure in name res';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_FAMILY') }}}] = '\'ai_family\' not supported';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_SOCKTYPE') }}}] = '\'ai_socktype\' not supported';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_SERVICE') }}}] = 'SERVICE not supported for \'ai_socktype\'';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_MEMORY') }}}] = 'Memory allocation failure';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_SYSTEM') }}}] = 'System error returned in \'errno\'';
GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_OVERFLOW') }}}] = 'Argument buffer overflow';
}
var msg = 'Unknown error';
if (val in GAI_ERRNO_MESSAGES) {
if (GAI_ERRNO_MESSAGES[val].length > buflen - 1) {
msg = 'Message too long'; // EMSGSIZE message. This should never occur given the GAI_ERRNO_MESSAGES above.
} else {
msg = GAI_ERRNO_MESSAGES[val];
}
}
writeAsciiToMemory(msg, _gai_strerror.buffer);
return _gai_strerror.buffer;
},
// Implement netdb.h protocol entry (getprotoent, getprotobyname, getprotobynumber, setprotoent, endprotoent)
// http://pubs.opengroup.org/onlinepubs/9699919799/functions/getprotobyname.html
// The Protocols object holds our 'fake' protocols 'database'.
$Protocols: {
list: [],
map: {}
},
setprotoent__deps: ['$Protocols'
#if MINIMAL_RUNTIME
, '$writeAsciiToMemory'
#endif
],
setprotoent: function(stayopen) {
// void setprotoent(int stayopen);
// Allocate and populate a protoent structure given a name, protocol number and array of aliases
function allocprotoent(name, proto, aliases) {
// write name into buffer
var nameBuf = _malloc(name.length + 1);
writeAsciiToMemory(name, nameBuf);
// write aliases into buffer
var j = 0;
var length = aliases.length;
var aliasListBuf = _malloc((length + 1) * 4); // Use length + 1 so we have space for the terminating NULL ptr.
for (var i = 0; i < length; i++, j += 4) {
var alias = aliases[i];
var aliasBuf = _malloc(alias.length + 1);
writeAsciiToMemory(alias, aliasBuf);
{{{ makeSetValue('aliasListBuf', 'j', 'aliasBuf', 'i8*') }}};
}
{{{ makeSetValue('aliasListBuf', 'j', '0', 'i8*') }}}; // Terminating NULL pointer.
// generate protoent
var pe = _malloc({{{ C_STRUCTS.protoent.__size__ }}});
{{{ makeSetValue('pe', C_STRUCTS.protoent.p_name, 'nameBuf', 'i8*') }}};
{{{ makeSetValue('pe', C_STRUCTS.protoent.p_aliases, 'aliasListBuf', 'i8**') }}};
{{{ makeSetValue('pe', C_STRUCTS.protoent.p_proto, 'proto', 'i32') }}};
return pe;
};
// Populate the protocol 'database'. The entries are limited to tcp and udp, though it is fairly trivial
// to add extra entries from /etc/protocols if desired - though not sure if that'd actually be useful.
var list = Protocols.list;
var map = Protocols.map;
if (list.length === 0) {
var entry = allocprotoent('tcp', 6, ['TCP']);
list.push(entry);
map['tcp'] = map['6'] = entry;
entry = allocprotoent('udp', 17, ['UDP']);
list.push(entry);
map['udp'] = map['17'] = entry;
}
_setprotoent.index = 0;
},
endprotoent: function() {
// void endprotoent(void);
// We're not using a real protocol database so we don't do a real close.
},
getprotoent__deps: ['setprotoent', '$Protocols'],
getprotoent: function(number) {
// struct protoent *getprotoent(void);
// reads the next entry from the protocols 'database' or return NULL if 'eof'
if (_setprotoent.index === Protocols.list.length) {
return 0;
} else {
var result = Protocols.list[_setprotoent.index++];
return result;
}
},
getprotobyname__deps: ['setprotoent', '$Protocols'],
getprotobyname: function(name) {
// struct protoent *getprotobyname(const char *);
name = UTF8ToString(name);
_setprotoent(true);
var result = Protocols.map[name];
return result;
},
getprotobynumber__deps: ['setprotoent', '$Protocols'],
getprotobynumber: function(number) {
// struct protoent *getprotobynumber(int proto);
_setprotoent(true);
var result = Protocols.map[number];
return result;
},
// ==========================================================================
// sockets. Note that the implementation assumes all sockets are always
// nonblocking
// ==========================================================================
#if SOCKET_WEBRTC
$Sockets__deps: ['$setErrNo',
function() { return 'var SocketIO = ' + read('socket.io.js') + ';\n' },
function() { return 'var Peer = ' + read('wrtcp.js') + ';\n' }],
#else
$Sockets__deps: ['$setErrNo'],
#endif
$Sockets: {
BUFFER_SIZE: 10*1024, // initial size
MAX_BUFFER_SIZE: 10*1024*1024, // maximum size we will grow the buffer
nextFd: 1,
fds: {},
nextport: 1,
maxport: 65535,
peer: null,
connections: {},
portmap: {},
localAddr: 0xfe00000a, // Local address is always 10.0.0.254
addrPool: [ 0x0200000a, 0x0300000a, 0x0400000a, 0x0500000a,
0x0600000a, 0x0700000a, 0x0800000a, 0x0900000a, 0x0a00000a,
0x0b00000a, 0x0c00000a, 0x0d00000a, 0x0e00000a] /* 0x0100000a is reserved */
},
#endif // PROXY_POSIX_SOCKETS == 0
// pwd.h
getpwnam: function() { throw 'getpwnam: TODO' },
getpwnam_r: function() { throw 'getpwnam_r: TODO' },
getpwuid: function() { throw 'getpwuid: TODO' },
getpwuid_r: function() { throw 'getpwuid_r: TODO' },
setpwent: function() { throw 'setpwent: TODO' },
getpwent: function() { throw 'getpwent: TODO' },
endpwent: function() { throw 'endpwent: TODO' },
// grp.h
getgrgid: function() { throw 'getgrgid: TODO' },
getgrgid_r: function() { throw 'getgrgid_r: TODO' },
getgrnam: function() { throw 'getgrnam: TODO' },
getgrnam_r: function() { throw 'getgrnam_r: TODO' },
getgrent: function() { throw 'getgrent: TODO' },
endgrent: function() { throw 'endgrent: TODO' },
setgrent: function() { throw 'setgrent: TODO' },
// random.h
// TODO: consider allowing the API to get a parameter for the number of
// bytes.
$getRandomDevice: function() {
if (typeof crypto === 'object' && typeof crypto['getRandomValues'] === 'function') {
// for modern web browsers
var randomBuffer = new Uint8Array(1);
return function() { crypto.getRandomValues(randomBuffer); return randomBuffer[0]; };
} else
#if ENVIRONMENT_MAY_BE_NODE
if (ENVIRONMENT_IS_NODE) {
// for nodejs with or without crypto support included
try {
var crypto_module = require('crypto');
// nodejs has crypto support
return function() { return crypto_module['randomBytes'](1)[0]; };
} catch (e) {
// nodejs doesn't have crypto support
}
}
#endif // ENVIRONMENT_MAY_BE_NODE
// we couldn't find a proper implementation, as Math.random() is not suitable for /dev/random, see emscripten-core/emscripten/pull/7096
#if ASSERTIONS
return function() { abort("no cryptographic support found for randomDevice. consider polyfilling it if you want to use something insecure like Math.random(), e.g. put this in a --pre-js: var crypto = { getRandomValues: function(array) { for (var i = 0; i < array.length; i++) array[i] = (Math.random()*256)|0 } };"); };
#else
return function() { abort("randomDevice"); };
#endif
},
getentropy__deps: ['$getRandomDevice'],
getentropy: function(buffer, size) {
if (!_getentropy.randomDevice) {
_getentropy.randomDevice = getRandomDevice();
}
for (var i = 0; i < size; i++) {
{{{ makeSetValue('buffer', 'i', '_getentropy.randomDevice()', 'i8') }}}
}
return 0;
},
// ==========================================================================
// emscripten.h
// ==========================================================================
emscripten_run_script__sig: 'vi',
emscripten_run_script: function(ptr) {
{{{ makeEval('eval(UTF8ToString(ptr));') }}}
},
emscripten_run_script_int__sig: 'ii',
emscripten_run_script_int__docs: '/** @suppress{checkTypes} */',
emscripten_run_script_int: function(ptr) {
{{{ makeEval('return eval(UTF8ToString(ptr))|0;') }}}
},
emscripten_run_script_string: function(ptr) {
{{{ makeEval("var s = eval(UTF8ToString(ptr));") }}}
if (s == null) {
return 0;
}
s += '';
var me = _emscripten_run_script_string;
var len = lengthBytesUTF8(s);
if (!me.bufferSize || me.bufferSize < len+1) {
if (me.bufferSize) _free(me.buffer);
me.bufferSize = len+1;
me.buffer = _malloc(me.bufferSize);
}
stringToUTF8(s, me.buffer, me.bufferSize);
return me.buffer;
},
emscripten_random: function() {
return Math.random();
},
emscripten_get_now__import: true,
emscripten_get_now: ';' +
#if ENVIRONMENT_MAY_BE_NODE
"if (ENVIRONMENT_IS_NODE) {\n" +
" _emscripten_get_now = function() {\n" +
" var t = process['hrtime']();\n" +
" return t[0] * 1e3 + t[1] / 1e6;\n" +
" };\n" +
"} else " +
#endif
#if USE_PTHREADS
// Pthreads need their clocks synchronized to the execution of the main thread, so give them a special form of the function.
"if (ENVIRONMENT_IS_PTHREAD) {\n" +
" _emscripten_get_now = function() { return performance.now() - Module['__performance_now_clock_drift']; };\n" +
"} else " +
#endif
#if ENVIRONMENT_MAY_BE_SHELL
"if (typeof dateNow !== 'undefined') {\n" +
" _emscripten_get_now = dateNow;\n" +
"} else " +
#endif
#if MIN_IE_VERSION <= 9 || MIN_FIREFOX_VERSION <= 14 || MIN_CHROME_VERSION <= 23 || MIN_SAFARI_VERSION <= 80400 // https://caniuse.com/#feat=high-resolution-time
"if (typeof performance !== 'undefined' && performance.now) {\n" +
" _emscripten_get_now = function() { return performance.now(); }\n" +
"} else {\n" +
" _emscripten_get_now = Date.now;\n" +
"}",
#else
// Modern environment where performance.now() is supported:
// N.B. a shorter form "_emscripten_get_now = return performance.now;" is unfortunately not allowed even in current browsers (e.g. FF Nightly 75).
"_emscripten_get_now = function() { return performance.now(); }\n",
#endif
emscripten_get_now_res: function() { // return resolution of get_now, in nanoseconds
#if ENVIRONMENT_MAY_BE_NODE
if (ENVIRONMENT_IS_NODE) {
return 1; // nanoseconds
} else
#endif
#if ENVIRONMENT_MAY_BE_SHELL
if (typeof dateNow !== 'undefined') {
return 1000; // microseconds (1/1000 of a millisecond)
} else
#endif
#if MIN_IE_VERSION <= 9 || MIN_FIREFOX_VERSION <= 14 || MIN_CHROME_VERSION <= 23 || MIN_SAFARI_VERSION <= 80400 // https://caniuse.com/#feat=high-resolution-time
if (typeof performance === 'object' && performance && typeof performance['now'] === 'function') {
return 1000; // microseconds (1/1000 of a millisecond)
} else {
return 1000*1000; // milliseconds
}
#else
// Modern environment where performance.now() is supported:
return 1000; // microseconds (1/1000 of a millisecond)
#endif
},
// Represents whether emscripten_get_now is guaranteed monotonic; the Date.now
// implementation is not :(
#if MIN_IE_VERSION <= 9 || MIN_FIREFOX_VERSION <= 14 || MIN_CHROME_VERSION <= 23 || MIN_SAFARI_VERSION <= 80400 // https://caniuse.com/#feat=high-resolution-time
emscripten_get_now_is_monotonic: `
((typeof performance === 'object' && performance && typeof performance['now'] === 'function')
#if ENVIRONMENT_MAY_BE_NODE
|| ENVIRONMENT_IS_NODE
#endif
#if ENVIRONMENT_MAY_BE_SHELL
|| (typeof dateNow !== 'undefined')
#endif
);`,
#else
// Modern environment where performance.now() is supported: (rely on minifier to return true unconditionally from this function)
emscripten_get_now_is_monotonic: 'true;',
#endif
#if MINIMAL_RUNTIME
$warnOnce: function(text) {
if (!warnOnce.shown) warnOnce.shown = {};
if (!warnOnce.shown[text]) {
warnOnce.shown[text] = 1;
err(text);
}
},
#endif
// Returns [parentFuncArguments, functionName, paramListName]
$traverseStack: function(args) {
if (!args || !args.callee || !args.callee.name) {
return [null, '', ''];
}
var funstr = args.callee.toString();
var funcname = args.callee.name;
var str = '(';
var first = true;
for (var i in args) {
var a = args[i];
if (!first) {
str += ", ";
}
first = false;
if (typeof a === 'number' || typeof a === 'string') {
str += a;
} else {
str += '(' + typeof a + ')';
}
}
str += ')';
var caller = args.callee.caller;
args = caller ? caller.arguments : [];
if (first)
str = '';
return [args, funcname, str];
},
emscripten_get_callstack_js__deps: ['$traverseStack', '$jsStackTrace',
#if MINIMAL_RUNTIME
, '$warnOnce'
#endif
],
emscripten_get_callstack_js__docs: '/** @param {number=} flags */',
emscripten_get_callstack_js: function(flags) {
var callstack = jsStackTrace();
// Find the symbols in the callstack that corresponds to the functions that report callstack information, and remove everything up to these from the output.
var iThisFunc = callstack.lastIndexOf('_emscripten_log');
var iThisFunc2 = callstack.lastIndexOf('_emscripten_get_callstack');
var iNextLine = callstack.indexOf('\n', Math.max(iThisFunc, iThisFunc2))+1;
callstack = callstack.slice(iNextLine);
if (flags & 32/*EM_LOG_DEMANGLE*/) {
warnOnce('EM_LOG_DEMANGLE is deprecated; ignoring');
}
// If user requested to see the original source stack, but no source map information is available, just fall back to showing the JS stack.
if (flags & 8/*EM_LOG_C_STACK*/ && typeof emscripten_source_map === 'undefined') {
warnOnce('Source map information is not available, emscripten_log with EM_LOG_C_STACK will be ignored. Build with "--pre-js $EMSCRIPTEN/src/emscripten-source-map.min.js" linker flag to add source map loading to code.');
flags ^= 8/*EM_LOG_C_STACK*/;
flags |= 16/*EM_LOG_JS_STACK*/;
}
var stack_args = null;
if (flags & 128 /*EM_LOG_FUNC_PARAMS*/) {
// To get the actual parameters to the functions, traverse the stack via the unfortunately deprecated 'arguments.callee' method, if it works:
stack_args = traverseStack(arguments);
while (stack_args[1].indexOf('_emscripten_') >= 0)
stack_args = traverseStack(stack_args[0]);
}
// Process all lines:
var lines = callstack.split('\n');
callstack = '';
var newFirefoxRe = new RegExp('\\s*(.*?)@(.*?):([0-9]+):([0-9]+)'); // New FF30 with column info: extract components of form ' Object._main@http://server.com:4324:12'
var firefoxRe = new RegExp('\\s*(.*?)@(.*):(.*)(:(.*))?'); // Old FF without column info: extract components of form ' Object._main@http://server.com:4324'
var chromeRe = new RegExp('\\s*at (.*?) \\\((.*):(.*):(.*)\\\)'); // Extract components of form ' at Object._main (http://server.com/file.html:4324:12)'
for (var l in lines) {
var line = lines[l];
var symbolName = '';
var file = '';
var lineno = 0;
var column = 0;
var parts = chromeRe.exec(line);
if (parts && parts.length == 5) {
symbolName = parts[1];
file = parts[2];
lineno = parts[3];
column = parts[4];
} else {
parts = newFirefoxRe.exec(line);
if (!parts) parts = firefoxRe.exec(line);
if (parts && parts.length >= 4) {
symbolName = parts[1];
file = parts[2];
lineno = parts[3];
column = parts[4]|0; // Old Firefox doesn't carry column information, but in new FF30, it is present. See https://bugzilla.mozilla.org/show_bug.cgi?id=762556
} else {
// Was not able to extract this line for demangling/sourcemapping purposes. Output it as-is.
callstack += line + '\n';
continue;
}
}
var haveSourceMap = false;
if (flags & 8/*EM_LOG_C_STACK*/) {
var orig = emscripten_source_map.originalPositionFor({line: lineno, column: column});
haveSourceMap = (orig && orig.source);
if (haveSourceMap) {
if (flags & 64/*EM_LOG_NO_PATHS*/) {
orig.source = orig.source.substring(orig.source.replace(/\\/g, "/").lastIndexOf('/')+1);
}
callstack += ' at ' + symbolName + ' (' + orig.source + ':' + orig.line + ':' + orig.column + ')\n';
}
}
if ((flags & 16/*EM_LOG_JS_STACK*/) || !haveSourceMap) {
if (flags & 64/*EM_LOG_NO_PATHS*/) {
file = file.substring(file.replace(/\\/g, "/").lastIndexOf('/')+1);
}
callstack += (haveSourceMap ? (' = ' + symbolName) : (' at '+ symbolName)) + ' (' + file + ':' + lineno + ':' + column + ')\n';
}
// If we are still keeping track with the callstack by traversing via 'arguments.callee', print the function parameters as well.
if (flags & 128 /*EM_LOG_FUNC_PARAMS*/ && stack_args[0]) {
if (stack_args[1] == symbolName && stack_args[2].length > 0) {
callstack = callstack.replace(/\s+$/, '');
callstack += ' with values: ' + stack_args[1] + stack_args[2] + '\n';
}
stack_args = traverseStack(stack_args[0]);
}
}
// Trim extra whitespace at the end of the output.
callstack = callstack.replace(/\s+$/, '');
return callstack;
},
emscripten_get_callstack__deps: ['emscripten_get_callstack_js'],
emscripten_get_callstack: function(flags, str, maxbytes) {
var callstack = _emscripten_get_callstack_js(flags);
// User can query the required amount of bytes to hold the callstack.
if (!str || maxbytes <= 0) {
return lengthBytesUTF8(callstack)+1;
}
// Output callstack string as C string to HEAP.
var bytesWrittenExcludingNull = stringToUTF8(callstack, str, maxbytes);
// Return number of bytes written, including null.
return bytesWrittenExcludingNull+1;
},
emscripten_log_js__deps: ['emscripten_get_callstack_js'],
emscripten_log_js: function(flags, str) {
if (flags & 24/*EM_LOG_C_STACK | EM_LOG_JS_STACK*/) {
str = str.replace(/\s+$/, ''); // Ensure the message and the callstack are joined cleanly with exactly one newline.
str += (str.length > 0 ? '\n' : '') + _emscripten_get_callstack_js(flags);
}
if (flags & 1 /*EM_LOG_CONSOLE*/) {
if (flags & 4 /*EM_LOG_ERROR*/) {
console.error(str);
} else if (flags & 2 /*EM_LOG_WARN*/) {
console.warn(str);
} else if (flags & 512 /*EM_LOG_INFO*/) {
console.info(str);
} else if (flags & 256 /*EM_LOG_DEBUG*/) {
console.debug(str);
} else {
console.log(str);
}
} else if (flags & 6 /*EM_LOG_ERROR|EM_LOG_WARN*/) {
err(str);
} else {
out(str);
}
},
emscripten_log__deps: ['$formatString', 'emscripten_log_js'],
emscripten_log: function(flags, format, varargs) {
var result = formatString(format, varargs);
var str = UTF8ArrayToString(result, 0);
_emscripten_log_js(flags, str);
},
emscripten_get_compiler_setting: function(name) {
name = UTF8ToString(name);
var ret = getCompilerSetting(name);
if (typeof ret === 'number') return ret;
if (!_emscripten_get_compiler_setting.cache) _emscripten_get_compiler_setting.cache = {};
var cache = _emscripten_get_compiler_setting.cache;
var fullname = name + '__str';
var fullret = cache[fullname];
if (fullret) return fullret;
return cache[fullname] = allocate(intArrayFromString(ret + ''), ALLOC_NORMAL);
},
emscripten_has_asyncify: function() {
return {{{ ASYNCIFY }}};
},
emscripten_debugger: function() {
debugger;
},
emscripten_print_double: function(x, to, max) {
var str = x + '';
if (to) return stringToUTF8(str, to, max);
else return lengthBytesUTF8(str);
},
// Generates a representation of the program counter from a line of stack trace.
// The exact return value depends in whether we are running WASM or JS, and whether
// the engine supports offsets into WASM. See the function body for details.
emscripten_generate_pc: function(frame) {
#if !USE_OFFSET_CONVERTER
abort('Cannot use emscripten_generate_pc (needed by __builtin_return_address) without -s USE_OFFSET_CONVERTER');
#endif
var match;
if (match = /\bwasm-function\[\d+\]:(0x[0-9a-f]+)/.exec(frame)) {
// some engines give the binary offset directly, so we use that as return address
return +match[1];
} else if (match = /\bwasm-function\[(\d+)\]:(\d+)/.exec(frame)) {
// other engines only give function index and offset in the function,
// so we try using the offset converter. If that doesn't work,
// we pack index and offset into a "return address"
return wasmOffsetConverter.convert(+match[1], +match[2]);
} else if (match = /:(\d+):\d+(?:\)|$)/.exec(frame)) {
// if we are in js, we can use the js line number as the "return address"
// this should work for wasm2js and fastcomp
// we tag the high bit to distinguish this from wasm addresses
return 0x80000000 | +match[1];
} else {
// return 0 if we can't find any
return 0;
}
},
// Returns a representation of a call site of the caller of this function, in a manner
// similar to __builtin_return_address. If level is 0, we return the call site of the
// caller of this function.
emscripten_return_address__deps: ['emscripten_generate_pc'],
emscripten_return_address: function(level) {
var callstack = new Error().stack.split('\n');
if (callstack[0] == 'Error') {
callstack.shift();
}
// skip this function and the caller to get caller's return address
return _emscripten_generate_pc(callstack[level + 2]);
},
$UNWIND_CACHE: {},
// This function pulls the JavaScript stack trace and updates UNWIND_CACHE so that
// our representation of the program counter is mapped to the line of the stack trace
// for every line in the stack trace. This allows emscripten_pc_get_* to lookup the
// line of the stack trace from the PC and return meaningful information.
//
// Additionally, it saves a copy of the entire stack trace and the return address of
// the caller. This is because there are two common forms of a stack trace.
// The first form starts the stack trace at the caller of the function requesting a stack
// trace. In this case, the function can simply walk down the stack from the return address
// using emscripten_return_address with increasing values for level.
// The second form starts the stack trace at the current function. This requires a helper
// function to get the program counter. This helper function will return the return address.
// This is the program counter at the call site. But there is a problem: when calling into
// code that performs stack unwinding, the program counter has changed since execution
// continued from calling the helper function. So we can't just walk down the stack and expect
// to see.the PC value we got. By caching the call stack, we can call emscripten_stack_unwind
// with the PC value and use that to unwind the cached stack. Naturally, the PC helper function
// will have to call emscripten_stack_snapshot to cache the stack. We also return the return
// address of the caller so the PC helper function does not need to call
// emscripten_return_address, saving a lot of time.
//
// One might expect that a sensible solution is to call the stack unwinder and explicitly tell it
// how many functions to skip from the stack. However, existing libraries do not work this way.
// For example, compiler-rt's sanitizer_common library has macros GET_CALLER_PC_BP_SP and
// GET_CURRENT_PC_BP_SP, which obtains the PC value for the two common cases stated above,
// respectively. Then, it passes the PC, BP, SP values along until some other function uses them
// to unwind. On standard machines, the stack can be unwound by treating BP as a linked list.
// This makes PC unnecessary to walk the stack, since walking is done with BP, which remains
// valid until the function returns. But on Emscripten, BP does not exist, at least in
// JavaScript frames, so we have to rely on PC values. Therefore, we must be able to unwind from
// a PC value that may no longer be on the execution stack, and so we are forced to cache the
// entire call stack.
emscripten_stack_snapshot__deps: ['emscripten_generate_pc', '$UNWIND_CACHE', '_emscripten_save_in_unwind_cache'],
emscripten_stack_snapshot: function () {
var callstack = new Error().stack.split('\n');
if (callstack[0] == 'Error') {
callstack.shift();
}
__emscripten_save_in_unwind_cache(callstack);
// Caches the stack snapshot so that emscripten_stack_unwind_buffer() can unwind from this spot.
UNWIND_CACHE.last_addr = _emscripten_generate_pc(callstack[2]);
UNWIND_CACHE.last_stack = callstack;
return UNWIND_CACHE.last_addr;
},
_emscripten_save_in_unwind_cache__deps: ['$UNWIND_CACHE', 'emscripten_generate_pc'],
_emscripten_save_in_unwind_cache: function (callstack) {
callstack.forEach(function (frame) {
var pc = _emscripten_generate_pc(frame);
if (pc) {
UNWIND_CACHE[pc] = frame;
}
});
},
// Unwinds the stack from a cached PC value. See emscripten_stack_snapshot for how this is used.
// addr must be the return address of the last call to emscripten_stack_snapshot, or this
// function will instead use the current call stack.
emscripten_stack_unwind_buffer__deps: ['$UNWIND_CACHE', '_emscripten_save_in_unwind_cache', 'emscripten_generate_pc'],
emscripten_stack_unwind_buffer: function (addr, buffer, count) {
var stack;
if (UNWIND_CACHE.last_addr == addr) {
stack = UNWIND_CACHE.last_stack;
} else {
stack = new Error().stack.split('\n');
if (stack[0] == 'Error') {
stack.shift();
}
__emscripten_save_in_unwind_cache(stack);
}
var offset = 2;
while (stack[offset] && _emscripten_generate_pc(stack[offset]) != addr) {
++offset;
}
for (var i = 0; i < count && stack[i+offset]; ++i) {
{{{ makeSetValue('buffer', 'i*4', '_emscripten_generate_pc(stack[i + offset])', 'i32', 0, true) }}};
}
return i;
},
// Look up the function name from our stack frame cache with our PC representation.
emscripten_pc_get_function__deps: ['$UNWIND_CACHE', '$withBuiltinMalloc'
#if MINIMAL_RUNTIME
, '$allocateUTF8'
#endif
],
emscripten_pc_get_function: function (pc) {
#if !USE_OFFSET_CONVERTER
abort('Cannot use emscripten_pc_get_function without -s USE_OFFSET_CONVERTER');
#endif
var name;
if (pc & 0x80000000) {
// If this is a JavaScript function, try looking it up in the unwind cache.
var frame = UNWIND_CACHE[pc];
if (!frame) return 0;
var match;
if (match = /^\s+at (.*) \(.*\)$/.exec(frame)) {
name = match[1];
} else if (match = /^(.+?)@/.exec(frame)) {
name = match[1];
} else {
return 0;
}
} else {
name = wasmOffsetConverter.getName(pc);
}
withBuiltinMalloc(function () {
if (_emscripten_pc_get_function.ret) _free(_emscripten_pc_get_function.ret);
_emscripten_pc_get_function.ret = allocateUTF8(name);
});
return _emscripten_pc_get_function.ret;
},
emscripten_pc_get_source_js__deps: ['$UNWIND_CACHE', 'emscripten_generate_pc'],
emscripten_pc_get_source_js: function (pc) {
if (UNWIND_CACHE.last_get_source_pc == pc) return UNWIND_CACHE.last_source;
var match;
var source;
#if LOAD_SOURCE_MAP
if (wasmSourceMap) {
var info = wasmSourceMap.lookup(pc);
if (info) {
source = {file: info.source, line: info.line, column: info.column};
}
}
#endif
if (!source) {
var frame = UNWIND_CACHE[pc];
if (!frame) return null;
// Example: at callMain (a.out.js:6335:22)
if (match = /\((.*):(\d+):(\d+)\)$/.exec(frame)) {
source = {file: match[1], line: match[2], column: match[3]};
// Example: main@a.out.js:1337:42
} else if (match = /@(.*):(\d+):(\d+)/.exec(frame)) {
source = {file: match[1], line: match[2], column: match[3]};
}
}
UNWIND_CACHE.last_get_source_pc = pc;
UNWIND_CACHE.last_source = source;
return source;
},
// Look up the file name from our stack frame cache with our PC representation.
emscripten_pc_get_file__deps: ['emscripten_pc_get_source_js', '$withBuiltinMalloc',
#if MINIMAL_RUNTIME
'$allocateUTF8',
#endif
],
emscripten_pc_get_file: function (pc) {
var result = _emscripten_pc_get_source_js(pc);
if (!result) return 0;
withBuiltinMalloc(function () {
if (_emscripten_pc_get_file.ret) _free(_emscripten_pc_get_file.ret);
_emscripten_pc_get_file.ret = allocateUTF8(result.file);
});
return _emscripten_pc_get_file.ret;
},
// Look up the line number from our stack frame cache with our PC representation.
emscripten_pc_get_line__deps: ['emscripten_pc_get_source_js'],
emscripten_pc_get_line: function (pc) {
var result = _emscripten_pc_get_source_js(pc);
return result ? result.line : 0;
},
// Look up the column number from our stack frame cache with our PC representation.
emscripten_pc_get_column__deps: ['emscripten_pc_get_source_js'],
emscripten_pc_get_column: function (pc) {
var result = _emscripten_pc_get_source_js(pc);
return result ? result.column || 0 : 0;
},
emscripten_get_module_name: function(buf, length) {
#if MINIMAL_RUNTIME
return stringToUTF8('{{{ TARGET_BASENAME }}}.wasm', buf, length);
#else
return stringToUTF8(wasmBinaryFile, buf, length);
#endif
},
$withBuiltinMalloc__deps: ['emscripten_builtin_malloc', 'emscripten_builtin_free', 'emscripten_builtin_memalign'
#if USE_ASAN
, 'emscripten_builtin_memset'
#endif
],
$withBuiltinMalloc__docs: '/** @suppress{checkTypes} */',
$withBuiltinMalloc: function (func) {
var prev_malloc = typeof _malloc !== 'undefined' ? _malloc : undefined;
var prev_memalign = typeof _memalign !== 'undefined' ? _memalign : undefined;
var prev_free = typeof _free !== 'undefined' ? _free : undefined;
_malloc = _emscripten_builtin_malloc;
_memalign = _emscripten_builtin_memalign;
_free = _emscripten_builtin_free;
#if USE_ASAN
var prev_memset = typeof _memset !== 'undefined' ? _memset : undefined
_memset = _emscripten_builtin_memset;
#endif
try {
return func();
} finally {
_malloc = prev_malloc;
_memalign = prev_memalign;
_free = prev_free;
#if USE_ASAN
_memset = prev_memset;
#endif
}
},
emscripten_builtin_mmap2__deps: ['$withBuiltinMalloc', '$syscallMmap2'],
emscripten_builtin_mmap2: function (addr, len, prot, flags, fd, off) {
return withBuiltinMalloc(function () {
return syscallMmap2(addr, len, prot, flags, fd, off);
});
},
emscripten_builtin_munmap__deps: ['$withBuiltinMalloc', '$syscallMunmap'],
emscripten_builtin_munmap: function (addr, len) {
return withBuiltinMalloc(function () {
return syscallMunmap(addr, len);
});
},
$readAsmConstArgsArray: '=[]',
$readAsmConstArgs__deps: ['$readAsmConstArgsArray'],
$readAsmConstArgs: function(sigPtr, buf) {
#if ASSERTIONS
// Nobody should have mutated _readAsmConstArgsArray underneath us to be something else than an array.
assert(Array.isArray(readAsmConstArgsArray));
// The input buffer is allocated on the stack, so it must be stack-aligned.
assert(buf % {{{ STACK_ALIGN }}} == 0);
#endif
readAsmConstArgsArray.length = 0;
var ch;
// Most arguments are i32s, so shift the buffer pointer so it is a plain
// index into HEAP32.
buf >>= 2;
while (ch = HEAPU8[sigPtr++]) {
#if ASSERTIONS
assert(ch === 100/*'d'*/ || ch === 102/*'f'*/ || ch === 105 /*'i'*/);
#endif
// A double takes two 32-bit slots, and must also be aligned - the backend
// will emit padding to avoid that.
var double = ch < 105;
if (double && (buf & 1)) buf++;
readAsmConstArgsArray.push(double ? HEAPF64[buf++ >> 1] : HEAP32[buf]);
++buf;
}
return readAsmConstArgsArray;
},
emscripten_asm_const_int__sig: 'iiii',
emscripten_asm_const_int: function(code, sigPtr, argbuf) {
#if RELOCATABLE
code -= {{{ GLOBAL_BASE }}};
#endif
var args = readAsmConstArgs(sigPtr, argbuf);
return ASM_CONSTS[code].apply(null, args);
},
emscripten_asm_const_double: 'emscripten_asm_const_int',
$mainThreadEM_ASM: function(code, sigPtr, argbuf, sync) {
#if RELOCATABLE
code -= {{{ GLOBAL_BASE }}};
#endif
var args = readAsmConstArgs(sigPtr, argbuf);
#if USE_PTHREADS
if (ENVIRONMENT_IS_PTHREAD) {
// EM_ASM functions are variadic, receiving the actual arguments as a buffer
// in memory. the last parameter (argBuf) points to that data. We need to
// always un-variadify that, *before proxying*, as in the async case this
// is a stack allocation that LLVM made, which may go away before the main
// thread gets the message. For that reason we handle proxying *after* the
// call to readAsmConstArgs, and therefore we do that manually here instead
// of using __proxy. (And dor simplicity, do the same in the sync
// case as well, even though it's not strictly necessary, to keep the two
// code paths as similar as possible on both sides.)
// -1 - code is the encoding of a proxied EM_ASM, as a negative number
// (positive numbers are non-EM_ASM calls).
return _emscripten_proxy_to_main_thread_js.apply(null, [-1 - code, sync].concat(args));
}
#endif
return ASM_CONSTS[code].apply(null, args);
},
emscripten_asm_const_int_sync_on_main_thread__deps: ['$mainThreadEM_ASM'],
emscripten_asm_const_int_sync_on_main_thread__sig: 'iiii',
emscripten_asm_const_int_sync_on_main_thread: function(code, sigPtr, argbuf) {
return mainThreadEM_ASM(code, sigPtr, argbuf, 1);
},
emscripten_asm_const_double_sync_on_main_thread: 'emscripten_asm_const_int_sync_on_main_thread',
emscripten_asm_const_async_on_main_thread__deps: ['$mainThreadEM_ASM'],
emscripten_asm_const_async_on_main_thread: function(code, sigPtr, argbuf) {
return mainThreadEM_ASM(code, sigPtr, argbuf, 0);
},
#if !DECLARE_ASM_MODULE_EXPORTS
// When DECLARE_ASM_MODULE_EXPORTS is not set we export native symbols
// at runtime rather than statically in JS code.
$exportAsmFunctions: function(asm) {
var asmjsMangle = function(x) {
var unmangledSymbols = {{{ buildStringArray(WASM_SYSTEM_EXPORTS) }}};
return x.indexOf('dynCall_') == 0 || unmangledSymbols.indexOf(x) != -1 ? x : '_' + x;
};
#if ENVIRONMENT_MAY_BE_NODE
#if ENVIRONMENT_MAY_BE_WEB
var global_object = (typeof process !== "undefined" ? global : this);
#else
var global_object = global;
#endif
#else
var global_object = this;
#endif
for (var __exportedFunc in asm) {
var jsname = asmjsMangle(__exportedFunc);
#if MINIMAL_RUNTIME
global_object[jsname] = asm[__exportedFunc];
#else
global_object[jsname] = Module[jsname] = asm[__exportedFunc];
#endif
}
},
#endif
// Parses as much of the given JS string to an integer, with quiet error
// handling (returns a NaN on error). E.g. jstoi_q("123abc") returns 123.
// Note that "smart" radix handling is employed for input string:
// "0314" is parsed as octal, and "0x1234" is parsed as base-16.
$jstoi_q__docs: '/** @suppress {checkTypes} */',
$jstoi_q: function(str) {
return parseInt(str);
},
// Converts a JS string to an integer base-10, with signaling error
// handling (throws a JS exception on error). E.g. jstoi_s("123abc")
// throws an exception.
$jstoi_s: function(str) {
return Number(str);
},
// libunwind
_Unwind_Backtrace__deps: ['emscripten_get_callstack_js'],
_Unwind_Backtrace: function(func, arg) {
var trace = _emscripten_get_callstack_js();
var parts = trace.split('\n');
for (var i = 0; i < parts.length; i++) {
var ret = {{{ makeDynCall('iii', 'func') }}}(0, arg);
if (ret !== 0) return;
}
},
_Unwind_GetIPInfo: function() {
abort('Unwind_GetIPInfo');
},
_Unwind_FindEnclosingFunction: function() {
return 0; // we cannot succeed
},
_Unwind_RaiseException__deps: ['__cxa_throw'],
_Unwind_RaiseException: function(ex) {
err('Warning: _Unwind_RaiseException is not correctly implemented');
return ___cxa_throw(ex, 0, 0);
},
_Unwind_DeleteException: function(ex) {
err('TODO: Unwind_DeleteException');
},
// autodebugging
emscripten_autodebug_i64: function(line, valuel, valueh) {
out('AD:' + [line, valuel, valueh]);
},
emscripten_autodebug_i32: function(line, value) {
out('AD:' + [line, value]);
},
emscripten_autodebug_i16: function(line, value) {
out('AD:' + [line, value]);
},
emscripten_autodebug_i8: function(line, value) {
out('AD:' + [line, value]);
},
emscripten_autodebug_float: function(line, value) {
out('AD:' + [line, value]);
},
emscripten_autodebug_double: function(line, value) {
out('AD:' + [line, value]);
},
// special runtime support
// Used by wasm-emscripten-finalize to implement STACK_OVERFLOW_CHECK
__handle_stack_overflow: function() {
abort('stack overflow')
},
$getExecutableName: function() {
#if MINIMAL_RUNTIME // MINIMAL_RUNTIME does not have a global runtime variable thisProgram
#if ENVIRONMENT_MAY_BE_NODE
if (ENVIRONMENT_IS_NODE && process['argv'].length > 1) {
return process['argv'][1].replace(/\\/g, '/');
}
#endif
return "./this.program";
#else
return thisProgram || './this.program';
#endif
},
$listenOnce: function(object, event, func) {
#if MIN_CHROME_VERSION < 55 || MIN_EDGE_VERSION < 18 || MIN_FIREFOX_VERSION < 50 || MIN_IE_VERSION != TARGET_NOT_SUPPORTED // https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
object.addEventListener(event, function handler() {
func();
object.removeEventListener(event, handler);
});
#else
object.addEventListener(event, func, { 'once': true });
#endif
},
// Receives a Web Audio context plus a set of elements to listen for user
// input events on, and registers a context resume() for them. This lets
// audio work properly in an automatic way, as browsers won't let audio run
// without user interaction.
// If @elements is not provided, we default to the document and canvas
// elements, which handle common use cases.
$autoResumeAudioContext__deps: ['$listenOnce'],
$autoResumeAudioContext: function(ctx, elements) {
if (!elements) {
elements = [document, document.getElementById('canvas')];
}
['keydown', 'mousedown', 'touchstart'].forEach(function(event) {
elements.forEach(function(element) {
if (element) {
listenOnce(element, event, function() {
if (ctx.state === 'suspended') ctx.resume();
});
}
});
});
},
#if USE_LEGACY_DYNCALLS || !WASM_BIGINT
$dynCallLegacy: function(sig, ptr, args) {
#if ASSERTIONS
assert(('dynCall_' + sig) in Module, 'bad function pointer type - no table for sig \'' + sig + '\'');
if (args && args.length) {
// j (64-bit integer) must be passed in as two numbers [low 32, high 32].
assert(args.length === sig.substring(1).replace(/j/g, '--').length);
} else {
assert(sig.length == 1);
}
#endif
if (args && args.length) {
return Module['dynCall_' + sig].apply(null, [ptr].concat(args));
}
return Module['dynCall_' + sig].call(null, ptr);
},
$dynCall__deps: ['$dynCallLegacy'],
// Used in library code to get JS function from wasm function pointer.
// All callers should use direct table access where possible and only fall
// back to this function if needed.
$getDynCaller__deps: ['$dynCall'],
$getDynCaller: function(sig, ptr) {
#if !USE_LEGACY_DYNCALLS
assert(sig.indexOf('j') >= 0, 'getDynCaller should only be called with i64 sigs')
#endif
var argCache = [];
return function() {
argCache.length = arguments.length;
for (var i = 0; i < arguments.length; i++) {
argCache[i] = arguments[i];
}
return dynCall(sig, ptr, argCache);
};
},
#endif
$dynCall: function (sig, ptr, args) {
#if USE_LEGACY_DYNCALLS
return dynCallLegacy(sig, ptr, args);
#else
#if !WASM_BIGINT
// Without WASM_BIGINT support we cannot directly call function with i64 as
// part of thier signature, so we rely the dynCall functions generated by
// wasm-emscripten-finalize
if (sig.indexOf('j') != -1) {
return dynCallLegacy(sig, ptr, args);
}
#endif
#if ASSERTIONS
assert(wasmTable.get(ptr), 'missing table entry in dynCall: ' + ptr);
#endif
return wasmTable.get(ptr).apply(null, args)
#endif
},
$callRuntimeCallbacks: function(callbacks) {
while(callbacks.length > 0) {
var callback = callbacks.shift();
if (typeof callback == 'function') {
callback(Module); // Pass the module as the first argument.
continue;
}
var func = callback.func;
if (typeof func === 'number') {
if (callback.arg === undefined) {
{{{ makeDynCall('v', 'func') }}}();
} else {
{{{ makeDynCall('vi', 'func') }}}(callback.arg);
}
} else {
func(callback.arg === undefined ? null : callback.arg);
}
}
},
};
function autoAddDeps(object, name) {
for (var item in object) {
if (item.substr(-6) != '__deps') {
if (!object[item + '__deps']) {
object[item + '__deps'] = [name];
} else {
object[item + '__deps'].push(name); // add to existing list
}
}
}
}