| /* Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "error_handling/string_stream.h" |
| void ssinit(sstream_t* stream) { |
| stream->data = NULL; |
| stream->length = 0; |
| } |
| |
| void ssfree(sstream_t* stream) { |
| free(stream->data); |
| stream->data = 0; |
| stream->length = 0; |
| } |
| |
| int ssvprintf(sstream_t* stream, const char* format, va_list args) { |
| va_list hold; |
| int len; |
| char* outstr; |
| |
| va_copy(hold, args); |
| len = vsnprintf(NULL, 0, format, args); |
| |
| outstr = malloc(stream->length + len + 1); |
| if (stream->data) { |
| memcpy(outstr, stream->data, stream->length); |
| free(stream->data); |
| } |
| |
| stream->data = outstr; |
| vsprintf(&stream->data[stream->length], format, hold); |
| stream->length += len; |
| |
| return len; |
| } |
| |
| int ssprintf(sstream_t* stream, const char* format, ...) { |
| int out; |
| va_list args; |
| va_start(args, format); |
| out = ssvprintf(stream, format, args); |
| va_end(args); |
| |
| return out; |
| } |