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/* Routines for locating data files
Copyright (C) 2016 Free Software Foundation, Inc.
This file was written by Daiki Ueno <ueno@gnu.org>, 2016.
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
(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, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/* Specification. */
#include "search-path.h"
#include <stdlib.h>
#include <string.h>
#include "concat-filename.h"
#include "xalloc.h"
#include "xmemdup0.h"
#include "xvasprintf.h"
/* Find the standard search path for data files. Returns a NULL
terminated list of strings. */
char **
get_search_path (const char *name)
{
char **result;
const char *gettextdatadir;
const char *gettextdatadirs;
char *base, *dir;
size_t n_dirs = 2;
gettextdatadirs = getenv ("GETTEXTDATADIRS");
/* If GETTEXTDATADIRS is not set, fallback to XDG_DATA_DIRS. */
if (gettextdatadirs == NULL || *gettextdatadirs == '\0')
gettextdatadirs = getenv ("XDG_DATA_DIRS");
if (gettextdatadirs != NULL)
{
const char *start = gettextdatadirs;
/* Count the number of valid elements in GETTEXTDATADIRS. */
while (*start != '\0')
{
char *end = strchrnul (start, ':');
/* Skip empty element. */
if (start != end)
n_dirs++;
if (*end == '\0')
break;
start = end + 1;
}
}
result = XCALLOC (n_dirs + 1, char *);
n_dirs = 0;
gettextdatadir = getenv ("GETTEXTDATADIR");
if (gettextdatadir == NULL || gettextdatadir[0] == '\0')
gettextdatadir = GETTEXTDATADIR;
if (name == NULL)
dir = xstrdup (gettextdatadir);
else
dir = xconcatenated_filename (gettextdatadir, name, NULL);
result[n_dirs++] = dir;
if (gettextdatadirs != NULL)
{
const char *start = gettextdatadirs;
/* Count the number of valid elements in GETTEXTDATADIRS. */
while (*start != '\0')
{
char *end = strchrnul (start, ':');
/* Skip empty element. */
if (start != end)
{
base = xmemdup0 (start, end - start);
if (name == NULL)
dir = base;
else
{
dir = xconcatenated_filename (base, name, NULL);
free (base);
}
result[n_dirs++] = dir;
}
if (*end == '\0')
break;
start = end + 1;
}
}
base = xasprintf ("%s%s", gettextdatadir, PACKAGE_SUFFIX);
if (name == NULL)
dir = base;
else
{
dir = xconcatenated_filename (base, name, NULL);
free (base);
}
result[n_dirs++] = dir;
return result;
}
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