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/*
* Copyright 2005-2006 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
* $Header: /var/cvsroot/gentoo-projects/portage-utils/q.c,v 1.33 2006/11/09 00:18:05 vapier Exp $
*
* Copyright 2005-2006 Ned Ludd - <solar@gentoo.org>
* Copyright 2005-2006 Mike Frysinger - <vapier@gentoo.org>
*/
#define Q_FLAGS "irm" COMMON_FLAGS
static struct option const q_long_opts[] = {
{"install", no_argument, NULL, 'i'},
{"reinitialize", no_argument, NULL, 'r'},
{"metacache", no_argument, NULL, 'm'},
COMMON_LONG_OPTS
};
static const char *q_opts_help[] = {
"Install symlinks for applets",
"Reinitialize ebuild cache",
"Reinitialize metadata cache",
COMMON_OPTS_HELP
};
static const char q_rcsid[] = "$Id: q.c,v 1.33 2006/11/09 00:18:05 vapier Exp $";
#define q_usage(ret) usage(ret, Q_FLAGS, q_long_opts, q_opts_help, lookup_applet_idx("q"))
APPLET lookup_applet(char *applet);
APPLET lookup_applet(char *applet)
{
unsigned int i;
if (strlen(applet) < 1)
return NULL;
for (i = 0; applets[i].name; ++i) {
if (strcmp(applets[i].name, applet) == 0) {
DBG("found applet %s at %p", applets[i].name, applets[i].func);
argv0 = applets[i].name;
if (i && applets[i].desc != NULL) ++argv0; /* chop the leading 'q' */
return applets[i].func;
}
}
/* No applet found? Search by shortname then... */
DBG("Looking up applet (%s) by short name", applet);
for (i = 1; applets[i].desc != NULL; ++i) {
if (strcmp(applets[i].name + 1, applet) == 0) {
DBG("found applet by short name %s", applets[i].name);
argv0 = applets[i].name + 1;
return applets[i].func;
}
}
/* still nothing ? those bastards ... */
warn("Unknown applet '%s'", applet);
return NULL;
}
int lookup_applet_idx(const char *applet)
{
unsigned int i;
for (i = 0; applets[i].name; i++)
if (strcmp(applets[i].name, applet) == 0)
return i;
return 0;
}
int q_main(int argc, char **argv)
{
int i;
char *p;
APPLET func;
if (argc == 0)
return 1;
argv0 = p = basename(argv[0]);
if ((func = lookup_applet(p)) == NULL)
return 1;
if (strcmp("q", p) != 0)
return (func)(argc, argv);
if (argc == 1)
q_usage(EXIT_FAILURE);
while ((i = GETOPT_LONG(Q, q, "+")) != -1) {
switch (i) {
COMMON_GETOPTS_CASES(q)
case 'm': reinitialize_metacache = 1; break;
case 'r': reinitialize = 1; break;
case 'i': {
char buf[_Q_PATH_MAX];
/* always bzero a buffer before using readlink() */
memset(buf, 0x00, sizeof(buf));
printf("Installing symlinks:\n");
if ((readlink("/proc/self/exe", buf, sizeof(buf))) == (-1)) {
warnf("could not readlink '/proc/self/exe': %s", strerror(errno));
return 1;
}
if (chdir(dirname(buf)) != 0) {
warnf("could not chdir to '%s': %s", buf, strerror(errno));
return 1;
}
for (i = 1; applets[i].desc != NULL; ++i) {
printf(" %s ...", applets[i].name);
errno = 0;
symlink("q", applets[i].name);
printf("\t[%s]\n", strerror(errno));
}
return 0;
}
}
}
if (reinitialize || reinitialize_metacache)
return 0;
if (argc == optind)
q_usage(EXIT_FAILURE);
if ((func = lookup_applet(argv[optind])) == NULL)
return 1;
/* In case of "q --option ... appletname ...", remove appletname from the
* applet's args, exchange "appletname" and "--option". */
if (optind > 1) {
char* appletname = argv[optind];
argv[optind] = argv[1];
argv[1] = appletname;
}
optind = 0; /* reset so the applets can call getopt */
return (func)(argc - 1, ++argv);
}
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