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lib: introduce xpath_join

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* lib/path-join.h, lib/path-join.c: New.
* lib/local.mk: Adjust.
* src/output.c: Use it.
This commit is contained in:
Akim Demaille
2018-10-06 12:18:52 +02:00
parent a61a84ec6a
commit d13a7fdb0a
4 changed files with 83 additions and 6 deletions
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4
lib/local.mk
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@@ -48,7 +48,9 @@ lib_libbison_a_SOURCES += \
# Non-gnulib sources in Bison's internal library.
lib_libbison_a_SOURCES += \
lib/get-errno.h \
lib/get-errno.c
lib/get-errno.c \
lib/path-join.h \
lib/path-join.c
# The Yacc compatibility library.
if ENABLE_YACC

37
lib/path-join.c Normal file
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@@ -0,0 +1,37 @@
/* Concatenate path components.
Copyright (C) 2018 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 3 of the License, or 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, see <https://www.gnu.org/licenses/>. */
/* Written by Akim Demaille <akim@lrde.epita.fr>. */
#include <config.h>
/* Specification. */
#include "path-join.h"
#include <concat-filename.h> /* xconcatenated_filename */
#include <filename.h> /* IS_ABSOLUTE_PATH */
#include <xalloc.h> /* xstrdup */
char *
xpath_join (const char *path1, const char *path2)
{
if (!path2 || !*path2)
return xstrdup (path1);
else if (IS_ABSOLUTE_PATH (path2))
return xstrdup (path2);
else
return xconcatenated_filename (path1, path2, NULL);
}

38
lib/path-join.h Normal file
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@@ -0,0 +1,38 @@
/* Concatenate path components.
Copyright (C) 2018 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 3 of the License, or 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, see <https://www.gnu.org/licenses/>. */
/* Written by Akim Demaille <akim@lrde.epita.fr>. */
#ifndef _PATH_JOIN_H
# define _PATH_JOIN_H
# ifdef __cplusplus
extern "C" {
# endif
/* Concatenate two paths together. PATH2 may be null, or empty, or
absolute: do what is right. Return a freshly allocated
filename. */
char *
xpath_join (const char *path1, const char *path2);
# ifdef __cplusplus
}
# endif
#endif /* _PATH_JOIN_H */