/* Concatenate variable number of strings.
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/* Concatenate variable number of strings.
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Copyright (C) 1991, 1994, 2001 Free Software Foundation, Inc.
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Copyright (C) 1991, 1994, 2001 Free Software Foundation, Inc.
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Written by Fred Fish @ Cygnus Support
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Written by Fred Fish @ Cygnus Support
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This file is part of the libiberty library.
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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Libiberty 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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but 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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If
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License along with libiberty; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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Boston, MA 02110-1301, USA. */
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/*
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/*
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@deftypefn Extension char* concat (const char *@var{s1}, const char *@var{s2}, @dots{}, @code{NULL})
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@deftypefn Extension char* concat (const char *@var{s1}, const char *@var{s2}, @dots{}, @code{NULL})
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Concatenate zero or more of strings and return the result in freshly
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Concatenate zero or more of strings and return the result in freshly
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@code{xmalloc}ed memory. Returns @code{NULL} if insufficient memory is
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@code{xmalloc}ed memory. Returns @code{NULL} if insufficient memory is
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available. The argument list is terminated by the first @code{NULL}
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available. The argument list is terminated by the first @code{NULL}
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pointer encountered. Pointers to empty strings are ignored.
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pointer encountered. Pointers to empty strings are ignored.
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@end deftypefn
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@end deftypefn
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NOTES
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NOTES
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This function uses xmalloc() which is expected to be a front end
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This function uses xmalloc() which is expected to be a front end
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function to malloc() that deals with low memory situations. In
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function to malloc() that deals with low memory situations. In
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typical use, if malloc() returns NULL then xmalloc() diverts to an
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typical use, if malloc() returns NULL then xmalloc() diverts to an
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error handler routine which never returns, and thus xmalloc will
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error handler routine which never returns, and thus xmalloc will
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never return a NULL pointer. If the client application wishes to
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never return a NULL pointer. If the client application wishes to
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deal with low memory situations itself, it should supply an xmalloc
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deal with low memory situations itself, it should supply an xmalloc
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that just directly invokes malloc and blindly returns whatever
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that just directly invokes malloc and blindly returns whatever
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malloc returns.
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malloc returns.
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*/
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*/
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#ifdef HAVE_CONFIG_H
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#include "config.h"
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#endif
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#endif
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#include "ansidecl.h"
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#include "ansidecl.h"
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#include "libiberty.h"
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#include "libiberty.h"
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#include <sys/types.h> /* size_t */
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#include <sys/types.h> /* size_t */
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#include <stdarg.h>
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#include <stdarg.h>
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# if HAVE_STRING_H
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# if HAVE_STRING_H
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# include <string.h>
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# include <string.h>
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# else
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# else
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# if HAVE_STRINGS_H
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# if HAVE_STRINGS_H
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# include <strings.h>
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# include <strings.h>
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# endif
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# endif
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# endif
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# endif
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#if HAVE_STDLIB_H
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#if HAVE_STDLIB_H
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#include <stdlib.h>
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#include <stdlib.h>
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#endif
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#endif
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static inline unsigned long vconcat_length (const char *, va_list);
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static inline unsigned long vconcat_length (const char *, va_list);
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static inline unsigned long
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static inline unsigned long
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vconcat_length (const char *first, va_list args)
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vconcat_length (const char *first, va_list args)
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{
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{
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unsigned long length = 0;
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unsigned long length = 0;
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const char *arg;
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const char *arg;
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for (arg = first; arg ; arg = va_arg (args, const char *))
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for (arg = first; arg ; arg = va_arg (args, const char *))
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length += strlen (arg);
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length += strlen (arg);
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return length;
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return length;
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}
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}
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static inline char *
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static inline char *
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vconcat_copy (char *dst, const char *first, va_list args)
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vconcat_copy (char *dst, const char *first, va_list args)
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{
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{
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char *end = dst;
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char *end = dst;
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const char *arg;
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const char *arg;
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for (arg = first; arg ; arg = va_arg (args, const char *))
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for (arg = first; arg ; arg = va_arg (args, const char *))
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{
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{
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unsigned long length = strlen (arg);
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unsigned long length = strlen (arg);
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memcpy (end, arg, length);
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memcpy (end, arg, length);
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end += length;
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end += length;
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}
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}
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*end = '\000';
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*end = '\000';
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return dst;
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return dst;
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}
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}
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/* @undocumented concat_length */
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/* @undocumented concat_length */
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unsigned long
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unsigned long
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concat_length (const char *first, ...)
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concat_length (const char *first, ...)
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{
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{
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unsigned long length;
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unsigned long length;
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VA_OPEN (args, first);
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VA_OPEN (args, first);
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VA_FIXEDARG (args, const char *, first);
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VA_FIXEDARG (args, const char *, first);
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length = vconcat_length (first, args);
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length = vconcat_length (first, args);
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VA_CLOSE (args);
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VA_CLOSE (args);
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return length;
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return length;
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}
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}
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/* @undocumented concat_copy */
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/* @undocumented concat_copy */
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char *
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char *
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concat_copy (char *dst, const char *first, ...)
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concat_copy (char *dst, const char *first, ...)
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{
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{
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char *save_dst;
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char *save_dst;
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VA_OPEN (args, first);
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VA_OPEN (args, first);
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VA_FIXEDARG (args, char *, dst);
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VA_FIXEDARG (args, char *, dst);
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VA_FIXEDARG (args, const char *, first);
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VA_FIXEDARG (args, const char *, first);
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vconcat_copy (dst, first, args);
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vconcat_copy (dst, first, args);
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save_dst = dst; /* With K&R C, dst goes out of scope here. */
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save_dst = dst; /* With K&R C, dst goes out of scope here. */
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VA_CLOSE (args);
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VA_CLOSE (args);
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return save_dst;
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return save_dst;
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}
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}
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#ifdef __cplusplus
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#ifdef __cplusplus
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extern "C" {
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extern "C" {
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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char *libiberty_concat_ptr;
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char *libiberty_concat_ptr;
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#ifdef __cplusplus
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#ifdef __cplusplus
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}
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}
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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/* @undocumented concat_copy2 */
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/* @undocumented concat_copy2 */
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char *
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char *
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concat_copy2 (const char *first, ...)
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concat_copy2 (const char *first, ...)
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{
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{
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VA_OPEN (args, first);
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VA_OPEN (args, first);
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VA_FIXEDARG (args, const char *, first);
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VA_FIXEDARG (args, const char *, first);
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vconcat_copy (libiberty_concat_ptr, first, args);
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vconcat_copy (libiberty_concat_ptr, first, args);
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VA_CLOSE (args);
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VA_CLOSE (args);
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return libiberty_concat_ptr;
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return libiberty_concat_ptr;
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}
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}
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char *
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char *
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concat (const char *first, ...)
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concat (const char *first, ...)
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{
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{
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char *newstr;
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char *newstr;
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/* First compute the size of the result and get sufficient memory. */
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/* First compute the size of the result and get sufficient memory. */
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VA_OPEN (args, first);
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VA_OPEN (args, first);
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VA_FIXEDARG (args, const char *, first);
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VA_FIXEDARG (args, const char *, first);
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newstr = XNEWVEC (char, vconcat_length (first, args) + 1);
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newstr = XNEWVEC (char, vconcat_length (first, args) + 1);
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VA_CLOSE (args);
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VA_CLOSE (args);
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/* Now copy the individual pieces to the result string. */
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/* Now copy the individual pieces to the result string. */
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VA_OPEN (args, first);
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VA_OPEN (args, first);
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VA_FIXEDARG (args, const char *, first);
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VA_FIXEDARG (args, const char *, first);
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vconcat_copy (newstr, first, args);
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vconcat_copy (newstr, first, args);
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VA_CLOSE (args);
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VA_CLOSE (args);
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return newstr;
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return newstr;
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}
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}
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/*
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/*
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@deftypefn Extension char* reconcat (char *@var{optr}, const char *@var{s1}, @dots{}, @code{NULL})
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@deftypefn Extension char* reconcat (char *@var{optr}, const char *@var{s1}, @dots{}, @code{NULL})
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Same as @code{concat}, except that if @var{optr} is not @code{NULL} it
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Same as @code{concat}, except that if @var{optr} is not @code{NULL} it
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is freed after the string is created. This is intended to be useful
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is freed after the string is created. This is intended to be useful
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when you're extending an existing string or building up a string in a
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when you're extending an existing string or building up a string in a
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loop:
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loop:
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@example
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@example
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str = reconcat (str, "pre-", str, NULL);
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str = reconcat (str, "pre-", str, NULL);
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@end example
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@end example
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@end deftypefn
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@end deftypefn
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*/
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*/
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char *
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char *
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reconcat (char *optr, const char *first, ...)
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reconcat (char *optr, const char *first, ...)
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{
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{
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char *newstr;
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char *newstr;
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/* First compute the size of the result and get sufficient memory. */
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/* First compute the size of the result and get sufficient memory. */
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VA_OPEN (args, first);
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VA_OPEN (args, first);
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VA_FIXEDARG (args, char *, optr);
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VA_FIXEDARG (args, char *, optr);
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VA_FIXEDARG (args, const char *, first);
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VA_FIXEDARG (args, const char *, first);
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newstr = XNEWVEC (char, vconcat_length (first, args) + 1);
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newstr = XNEWVEC (char, vconcat_length (first, args) + 1);
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VA_CLOSE (args);
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VA_CLOSE (args);
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/* Now copy the individual pieces to the result string. */
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/* Now copy the individual pieces to the result string. */
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VA_OPEN (args, first);
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VA_OPEN (args, first);
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VA_FIXEDARG (args, char *, optr);
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VA_FIXEDARG (args, char *, optr);
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VA_FIXEDARG (args, const char *, first);
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VA_FIXEDARG (args, const char *, first);
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vconcat_copy (newstr, first, args);
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vconcat_copy (newstr, first, args);
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if (optr) /* Done before VA_CLOSE so optr stays in scope for K&R C. */
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if (optr) /* Done before VA_CLOSE so optr stays in scope for K&R C. */
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free (optr);
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free (optr);
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VA_CLOSE (args);
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VA_CLOSE (args);
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return newstr;
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return newstr;
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}
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}
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#ifdef MAIN
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#ifdef MAIN
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#define NULLP (char *)0
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#define NULLP (char *)0
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/* Simple little test driver. */
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/* Simple little test driver. */
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#include <stdio.h>
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#include <stdio.h>
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int
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int
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main (void)
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main (void)
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{
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{
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printf ("\"\" = \"%s\"\n", concat (NULLP));
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printf ("\"\" = \"%s\"\n", concat (NULLP));
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printf ("\"a\" = \"%s\"\n", concat ("a", NULLP));
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printf ("\"a\" = \"%s\"\n", concat ("a", NULLP));
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printf ("\"ab\" = \"%s\"\n", concat ("a", "b", NULLP));
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printf ("\"ab\" = \"%s\"\n", concat ("a", "b", NULLP));
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printf ("\"abc\" = \"%s\"\n", concat ("a", "b", "c", NULLP));
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printf ("\"abc\" = \"%s\"\n", concat ("a", "b", "c", NULLP));
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printf ("\"abcd\" = \"%s\"\n", concat ("ab", "cd", NULLP));
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printf ("\"abcd\" = \"%s\"\n", concat ("ab", "cd", NULLP));
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printf ("\"abcde\" = \"%s\"\n", concat ("ab", "c", "de", NULLP));
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printf ("\"abcde\" = \"%s\"\n", concat ("ab", "c", "de", NULLP));
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printf ("\"abcdef\" = \"%s\"\n", concat ("", "a", "", "bcd", "ef", NULLP));
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printf ("\"abcdef\" = \"%s\"\n", concat ("", "a", "", "bcd", "ef", NULLP));
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return 0;
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return 0;
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}
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}
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#endif
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#endif
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