| /* |
| Copyright (C) 1995 Free Software Foundation |
| |
| This file is part of the GNU IO Library. This library is free |
| software; you can redistribute it and/or modify it under the |
| terms of the GNU General Public License as published by the |
| Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| As a special exception, if you link this library with files |
| compiled with a GNU compiler to produce an executable, this does not cause |
| the resulting executable to be covered by the GNU General Public License. |
| This exception does not however invalidate any other reasons why |
| the executable file might be covered by the GNU General Public License. */ |
| |
| #include <malloc.h> |
| #include "libioP.h" |
| #include "stdio.h" |
| #include "strfile.h" |
| |
| int |
| _IO_vasprintf (result_ptr, format, args) |
| char **result_ptr; |
| const char *format; |
| _IO_va_list args; |
| { |
| /* Initial size of the buffer to be used. Will be doubled each time an |
| overflow occurs. */ |
| const _IO_size_t init_string_size = 100; |
| char *string; |
| _IO_strfile sf; |
| #ifdef _IO_MTSAFE_IO |
| _IO_lock_t lock; |
| #endif |
| int ret; |
| string = malloc (init_string_size); |
| if (string == NULL) |
| return -1; |
| #ifdef _IO_MTSAFE_IO |
| sf._sbf._f._lock = &lock; |
| #endif |
| _IO_init((_IO_FILE*)&sf, 0); |
| _IO_JUMPS((_IO_FILE*)&sf) = &_IO_str_jumps; |
| _IO_str_init_static ((_IO_FILE*)&sf, string, init_string_size, string); |
| sf._sbf._f._flags &= ~_IO_USER_BUF; |
| sf._s._allocate_buffer = (_IO_alloc_type) malloc; |
| sf._s._free_buffer = (_IO_free_type) free; |
| ret = _IO_vfprintf((_IO_FILE*)&sf, format, args); |
| if (ret < 0) |
| return ret; |
| *result_ptr = (char *) realloc (sf._sbf._f._IO_buf_base, |
| (sf._sbf._f._IO_write_ptr |
| - sf._sbf._f._IO_write_base) +1); |
| if (*result_ptr == NULL) |
| *result_ptr = sf._sbf._f._IO_buf_base; |
| (*result_ptr)[sf._sbf._f._IO_write_ptr-sf._sbf._f._IO_write_base] = '\0'; |
| return ret; |
| } |
| weak_alias (_IO_vasprintf, vasprintf) |