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73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/* Copyright (C) 1995, 1997 Free Software Foundation, Inc.
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This file is part of the GNU IO Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2, or (at
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your option) any later version.
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This library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does
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not cause the resulting executable to be covered by the GNU General
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Public License. This exception does not however invalidate any
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other reasons why the executable file might be covered by the GNU
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General Public License. */
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#include <malloc.h>
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#include "libioP.h"
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#include "stdio.h"
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#include "strfile.h"
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int
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_IO_vasprintf (result_ptr, format, args)
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char **result_ptr;
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const char *format;
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_IO_va_list args;
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{
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/* Initial size of the buffer to be used. Will be doubled each time an
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overflow occurs. */
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const _IO_size_t init_string_size = 100;
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char *string;
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_IO_strfile sf;
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#ifdef _IO_MTSAFE_IO
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_IO_lock_t lock;
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#endif
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int ret;
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string = (char *) malloc (init_string_size);
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if (string == NULL)
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return -1;
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#ifdef _IO_MTSAFE_IO
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sf._sbf._f._lock = &lock;
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#endif
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_IO_init ((_IO_FILE *) &sf, 0);
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_IO_JUMPS ((_IO_FILE *) &sf) = &_IO_str_jumps;
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_IO_str_init_static ((_IO_FILE *) &sf, string, init_string_size, string);
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sf._sbf._f._flags &= ~_IO_USER_BUF;
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sf._s._allocate_buffer = (_IO_alloc_type) malloc;
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sf._s._free_buffer = (_IO_free_type) free;
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ret = _IO_vfprintf ((_IO_FILE *) &sf, format, args);
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if (ret < 0)
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return ret;
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*result_ptr = (char *) realloc (sf._sbf._f._IO_buf_base,
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(sf._sbf._f._IO_write_ptr
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- sf._sbf._f._IO_write_base) +1);
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if (*result_ptr == NULL)
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*result_ptr = sf._sbf._f._IO_buf_base;
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(*result_ptr)[sf._sbf._f._IO_write_ptr-sf._sbf._f._IO_write_base] = '\0';
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return ret;
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}
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#ifdef weak_alias
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weak_alias (_IO_vasprintf, vasprintf)
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#endif
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