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authorRoland McGrath <roland@gnu.org>1995-11-20 03:48:11 +0000
committerRoland McGrath <roland@gnu.org>1995-11-20 03:48:11 +0000
commit96aa2d94a2355cdc55c96e808d14a0e7f2ebe77d (patch)
treef7c87e6742af0707b858a1387ca85b679aa8d13e /libio/vasprintf.c
parenta5a81fecc7194d050066265a15b1ba8bc3abc627 (diff)
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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.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/libio/vasprintf.c b/libio/vasprintf.c
new file mode 100644
index 0000000..ee92f83
--- /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)