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author | Roland McGrath <roland@gnu.org> | 1995-11-20 03:48:11 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-11-20 03:48:11 +0000 |
commit | 96aa2d94a2355cdc55c96e808d14a0e7f2ebe77d (patch) | |
tree | f7c87e6742af0707b858a1387ca85b679aa8d13e /libio/vasprintf.c | |
parent | a5a81fecc7194d050066265a15b1ba8bc3abc627 (diff) | |
download | glibc-96aa2d94a2355cdc55c96e808d14a0e7f2ebe77d.tar glibc-96aa2d94a2355cdc55c96e808d14a0e7f2ebe77d.tar.gz glibc-96aa2d94a2355cdc55c96e808d14a0e7f2ebe77d.tar.bz2 glibc-96aa2d94a2355cdc55c96e808d14a0e7f2ebe77d.zip |
Sat Nov 18 16:46:01 1995 Ulrich Drepper <drepper@gnu.ai.mit.edu>
* 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.
Diffstat (limited to 'libio/vasprintf.c')
-rw-r--r-- | libio/vasprintf.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/libio/vasprintf.c b/libio/vasprintf.c new file mode 100644 index 0000000000..ee92f83b1c --- /dev/null +++ b/libio/vasprintf.c @@ -0,0 +1,61 @@ +/* +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; + int ret; + string = ALLOC_BUF(init_string_size); + if (string == NULL) + return -1; + _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._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._f._IO_buf_base, + (sf._f._IO_write_ptr - sf._f._IO_write_base) +1); + if (*result_ptr == NULL) + *result_ptr = sf._f._IO_buf_base; + (*result_ptr)[sf._f._IO_write_ptr-sf._f._IO_write_base] = '\0'; + return ret; +} +weak_alias (_IO_vasprintf, vasprintf) |