view lib/xstrndup.c @ 7944:a1d177cd9523

* doc/gnulib-tool.texi (Initial import): Update to match current behavior with strdup module. * lib/.cppi-disable: Remove strcase.h, strdup.h, strndup.h, strnlen.h. * lib/memmem.h: Remove; all uses removed. This is now done by <string.h>. * lib/mempcpy.h: Likewise. * lib/memrchr.h: Likewise. * lib/stpcpy.h: Likewise. * lib/stpncpy.h: Likewise. * lib/strcase.h: Likewise. * lib/strchrnul.h: Likewise. * lib/strdup.h: Likewise. * lib/strndup.h: Likewise. * lib/strnlen.h: Likewise. * lib/strpbrk.h: Likewise. * lib/strsep.h: Likewise. * lib/strstr.h: Likewise. * lib/strtok_r.h: Likewise. * lib/string_.h: New file. * lib/argp-namefrob.h: Don't include no-longer-existent include files. Rely on <string.h> instead. * lib/canon-host.c: Likewise. * lib/chdir-long.c: Likewise. * lib/concatpath.c: Likewise. * lib/exclude.c: Likewise. * lib/fchdir.c: Likewise. * lib/getaddrinfo.c: Likewise. * lib/getcwd.c: Likewise. * lib/getsubopt.c: Likewise. * lib/glob.c: Likewise. * lib/hard-locale.c: Likewise. * lib/iconvme.c: Likewise. * lib/javacomp.c: Likewise. * lib/mempcpy.c: Likewise. * lib/memrchr.c: Likewise. * lib/regex_internal.h: Likewise. * lib/stpncpy.c: Likewise. * lib/strcasecmp.c: Likewise. * lib/strchrnul.c: Likewise. * lib/strdup.c: Likewise. * lib/striconv.c: Likewise. * lib/striconveh.c: Likewise. * lib/striconveha.c: Likewise. * lib/strncasecmp.c: Likewise. * lib/strndup.c: Likewise. * lib/strnlen.c: Likewise. * lib/strsep.c: Likewise. * lib/strstr.c: Likewise. * lib/strtok_r.c: Likewise. * lib/userspec.c: Likewise. * lib/w32spawn.h: Likewise. * lib/xstrndup.c: Likewise. * lib/mountlist.c (strstr): Remove decl. * m4/string_h.m4: New file. * m4/memmem.m4 (gl_FUNC_MEMMEM): Set HAVE_DECL_MEMMEM if necessary. * m4/mempcpy.m4 (gl_FUNC_MEMPCPY): Set HAVE_MEMPCPY if necessary. * m4/memrchr.m4 (gl_FUNC_MEMRCHR): Set HAVE_MEMRCHR * m4/stpcpy.m4 (gl_FUNC_STPCPY): Set HAVE_STPCPY if necessary. * m4/stpncpy.m4 (gl_PREREQ_STPNCPY): Set HAVE_STPNCPY if necessary. * m4/strcase.m4 (gl_FUNC_STRCASECMP): Set REPLACE_STRCASECMP if necessary. (gl_FUNC_STRNCASECMP): Set HAVE_DECL_STRNCASECMP if necessary. * m4/strchrnul.m4 (gl_FUNC_STRCHRNUL): Set HAVE_STRCHRNUL if necessary. * m4/strdup.m4 (gl_FUNC_STRDUP): Set HAVE_DECL_STRDUP if necessary. * m4/strndup.m4 (gl_FUNC_STRNDUP): Set HAVE_DECL_STRNLEN and HAVE_DECL_STRDUP if necessary. (gl_PREREQ_STRNLEN): Don't bother to check for strnlen decl, since gl_FUNC_STRNDUP does that now. * m4/strnlen.m4 (gl_FUNC_STRNLEN): Set HAVE_DECL_STRNLEN if necessary. Check for decl here... (gl_PREREQ_STRNLEN): ... not here. * m4/strpbrk.m4 (gl_FUNC_STRPBRK): Set HAVE_STRPBRK if necessary. * m4/strsep.m4 (gl_FUNC_STRSEP): Set HAVE_STRSEP if necessary. * m4/strstr.m4 (gl_FUNC_STRSTR): Set REPLACE_STRSTR if necessary. * m4/strtok_r.m4 (gl_FUNC_STRTOK_R): Set HAVE_DECL_STRTOK_R if necessary. * modules/string: New file. * modules/memmem (Files): Remove special-purpose include file. (Depends-on): Add string. (Include): Include <string.h>, not the removed file. * modules/mempcpy: Likewise. * modules/memrchr: Likewise. * modules/stpcpy: Likewise. * modules/stpncpy: Likewise. * modules/strcase: Likewise. * modules/strchrnul: Likewise. * modules/strdup: Likewise. * modules/strndup: Likewise. * modules/strnlen: Likewise. * modules/strpbrk: Likewise. * modules/strsep: Likewise. * modules/strstr: Likewise. * modules/strtok_r: Likewise. * tests/test-dirname.c: Don't include "stdup.h", since <string.h> now suffices. * tests/test-memmem.c: Don't include "memmem.h", since <string.h> now suffices.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 26 Jan 2007 22:16:55 +0000
parents 05f15d427bf3
children bbbbbf4cd1c5
line wrap: on
line source

/* Duplicate a bounded initial segment of a string, with out-of-memory
   checking.
   Copyright (C) 2003, 2006, 2007 Free Software Foundation, Inc.

   This program 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 program 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 this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

#include <config.h>

/* Specification.  */
#include "xstrndup.h"

#include <string.h>
#include "xalloc.h"

/* Return a newly allocated copy of at most N bytes of STRING.
   In other words, return a copy of the initial segment of length N of
   STRING.  */
char *
xstrndup (const char *string, size_t n)
{
  char *s = strndup (string, n);
  if (! s)
    xalloc_die ();
  return s;
}