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/*
* Copyright (C) 2014, Lanedo <martyn@lanedo.com>
*
* 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
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "config.h"
#include <unistd.h>
#include <errno.h>
#include <glib/gi18n.h>
#include "tracker-help.h"
static void
setup_man_path (void)
{
GString *new_path = g_string_new ("");
const char *old_path = g_getenv ("MANPATH");
/* We should always put ':' after our path. If there is no
* old_path, the ':' at the end will let 'man' to try
* system-wide paths after ours to find the manual page. If
* there is old_path, we need ':' as delimiter. */
g_string_append (new_path, MANDIR);
g_string_append_c (new_path, ':');
if (old_path) {
g_string_append (new_path, old_path);
}
g_setenv ("MANPATH", new_path->str, TRUE);
g_string_free (new_path, TRUE);
}
static int
exec_man_man (const char *path, const char *page)
{
if (!path) {
path = "man";
}
execlp (path, "man", page, (char *) NULL);
g_warning(_("failed to exec “%s”: %s"), path, strerror (errno));
return -1;
}
static int
exec_man_cmd (const char *cmd, const char *page)
{
gchar *shell_cmd;
shell_cmd = g_strdup_printf ("%s %s", cmd, page);
execl ("/bin/sh", "sh", "-c", shell_cmd, (char *) NULL);
g_warning (_("failed to exec “%s”: %s"), cmd, strerror (errno));
g_free (shell_cmd);
return -1;
}
static char *
cmd_to_page (const char *cmd)
{
if (!cmd) {
return g_strdup (COMMANDNAME);
} else if (g_str_has_prefix (cmd, COMMANDNAME "-")) {
return g_strdup (cmd);
} else {
return g_strdup_printf (COMMANDNAME "-%s", cmd);
}
}
int
tracker_help_show_man_page (const char *cmd)
{
char *page = cmd_to_page (cmd);
int retval;
setup_man_path ();
if (0) {
exec_man_cmd ("man", page);
}
retval = exec_man_man ("man", page);
g_free (page);
return retval;
}
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