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/*
* msiinfo - MSI inspection tool
*
* Copyright 2012 Red Hat, Inc.
*
* Author: Paolo Bonzini <pbonzini@redhat.com>
*
* This library 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 library 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 St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "libmsi.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static const char *program_name;
struct Command {
const char *cmd;
const char *desc;
const char *usage;
const char *opts;
const char *help;
int (*func)(struct Command *cmd, int argc, char **argv);
};
static struct Command cmds[];
static char *get_basename(char *path)
{
char *p;
if (!path || !*path) {
return ".";
}
p = path + strlen(path);
while (p > path && *p != '/' && *p != '\\') {
p--;
}
if (p > path) {
p++;
}
return p;
}
static void usage(FILE *out)
{
int i;
fprintf(out, "Usage: %s SUBCOMMAND COMMAND-OPTIONS...\n\n", program_name);
fprintf(out, "Options:\n");
fprintf(out, " -h, --help Show program usage\n");
fprintf(out, " -v, --version Display program version\n\n");
fprintf(out, "Available subcommands:\n");
for (i = 0; cmds[i].cmd; i++) {
if (cmds[i].desc) {
fprintf(out, " %-18s%s\n", cmds[i].cmd, cmds[i].desc);
}
}
exit (out == stderr);
}
static void cmd_usage(FILE *out, struct Command *cmd)
{
fprintf(out, "%s %s %s\n\n%s.\n", program_name, cmd->cmd, cmd->opts,
cmd->desc);
if (cmd->help) {
fprintf(out, "\n%s\n", cmd->help);
}
exit (out == stderr);
}
static struct Command *find_cmd(const char *s)
{
int i;
for (i = 0; cmds[i].cmd; i++) {
if (!strcmp(s, cmds[i].cmd)) {
return &cmds[i];
}
}
fprintf(stderr, "%s: Unrecognized command '%s'\n", program_name, s);
return NULL;
}
static int cmd_version(struct Command *cmd, int argc, char **argv)
{
printf("%s (%s) version %s\n", program_name, PACKAGE, VERSION);
return 0;
}
static int cmd_help(struct Command *cmd, int argc, char **argv)
{
if (argc > 1) {
cmd = find_cmd(argv[1]);
if (cmd && cmd->desc) {
cmd_usage(stdout, cmd);
}
}
usage(stdout);
}
static struct Command cmds[] = {
{
.cmd = "help",
.opts = "[SUBCOMMAND]",
.desc = "Show program or subcommand usage",
.func = cmd_help,
},
{
.cmd = "-h",
.func = cmd_help,
},
{
.cmd = "--help",
.func = cmd_help,
},
{
.cmd = "-v",
.func = cmd_version
},
{
.cmd = "--version",
.func = cmd_version
},
{ NULL },
};
int main(int argc, char **argv)
{
struct Command *cmd = NULL;
program_name = get_basename(argv[0]);
if (argc == 1) {
usage(stderr);
}
cmd = find_cmd(argv[1]);
if (!cmd) {
fprintf(stderr, "%s: Unrecognized command\n", program_name);
usage(stderr);
}
return cmd->func(cmd, argc - 1, argv + 1);
}
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