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* libio/Makefile, libio/cleanup.c, libio/clearerr.c, libio/feof.c, libio/ferror.c, libio/fgetc.c, libio/filedoalloc.c, libio/fileno.c, libio/fileops.c, libio/fputc.c, libio/freopen.c, libio/fseek.c, libio/genops.c, libio/getc.c, libio/getchar.c, libio/iofclose.c, libio/iofdopen.c, libio/iofflush.c, libio/iofgetpos.c, libio/iofgets.c, libio/iofopen.c, libio/iofprintf.c, libio/iofputs.c, libio/iofread.c, libio/iofscanf.c, libio/iofsetpos.c, libio/ioftell.c, libio/iofwrite.c, libio/iogetdelim.c, libio/iogetline.c, libio/iogets.c, libio/iolibio.h, libio/iopadn.c, libio/ioprims.c, libio/ioputs.c, libio/ioseekoff.c, libio/ioseekpos.c, libio/iosetbuffer.c, libio/iosetvbuf.c, libio/iosprintf.c, libio/ioungetc.c, libio/iovsprintf.c, libio/iovsscanf.c, libio/libio.h, libio/libioP.h, libio/putc.c, libio/putchar.c, libio/rewind.c, libio/setbuf.c, libio/setlinebuf.c, libio/stdfiles.c, libio/stdio.c, libio/stdio.h, libio/strfile.h, libio/strops.c, libio/vasprintf.c, libio/vscanf.c, libio/vsnprintf.c: New files. Slightly modified version from Linux libc. * libio/memstream.c, libio/vdprintf.c: New files for functions not (yet) part of GNU libio. * libio/iofopncook.c: Implementation of `fopencookie', mainly written by Per Bothner. * stdio-common/getline.c: Adapted to libio. * stdio-common/snprintf.c: Adapted to libio. * stdio-common/vfprintf.c: Adapted to libio. * stdio-common/vfscanf.c: Adapted to libio. * sysdeps/posix/tempname.c: Adapted to libio.
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*
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Copyright (C) 1995 Free Software Foundation
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This file is part of the GNU IO Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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 not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU 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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int ret;
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string = ALLOC_BUF(init_string_size);
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if (string == NULL)
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return -1;
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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._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._f._IO_buf_base,
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(sf._f._IO_write_ptr - sf._f._IO_write_base) +1);
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if (*result_ptr == NULL)
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*result_ptr = sf._f._IO_buf_base;
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(*result_ptr)[sf._f._IO_write_ptr-sf._f._IO_write_base] = '\0';
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return ret;
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}
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weak_alias (_IO_vasprintf, vasprintf)
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