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#include <assert.h>
#include <sqlite3.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define DATABASE_PATH (FTAG_ROOT "/ftag.sqlite3")
static void ftag_init(int, char **);
static void ftag_help(int, char **);
static void ftag_tag(int, char **);
/* Parse arguments using an array of available commands. ARGV[0] has to match
* the "name" field of an entry of COMMANDS. */
static void parse_args(int argc,
char ** argv,
const struct ftag_command *commands,
int command_count);
struct ftag_command {
const char *name;
void (*func)(int argc, char **argv);
};
static const struct ftag_command toplevel_commands[] = {
{.name = "init", .func = ftag_init},
{.name = "help", .func = ftag_help}
};
static const int toplevel_command_count = sizeof(toplevel_commands) / sizeof(struct ftag_command);
static sqlite3 *db;
static void __sqlite3_check(int rc, sqlite3 *db, const char *file, int line)
{
if (rc == SQLITE_OK)
return;
fprintf(stderr, "%s:%d: %s\n", file, line, sqlite3_errmsg(db));
assert(0);
}
#define sqlite3_check(RC, DB) __sqlite3_check(RC, DB, __FILE__, __LINE__)
static void ftag_init(int, char **)
{
char cmd[1024];
memset(cmd, 0, sizeof(cmd));
snprintf(cmd, sizeof(cmd)-1, "sqlite3 %s < %s", DATABASE_PATH, FTAG_ROOT "/sql/init.sql");
execl("/usr/bin/sh", "/usr/bin/sh", "-c", cmd, NULL);
perror("exec");
exit(EXIT_FAILURE);
}
static void ftag_help(int, char **)
{
printf("Usage: ftag COMMAND [COMMAND-ARG]...\n");
printf("Available values for COMMAND:\n");
printf(" init initialize the database\n");
printf(" help print this message\n");
printf("Configuration:\n");
printf(" database path %s\n", DATABASE_PATH);
printf(" ftag root %s\n", FTAG_ROOT);
}
static void parse_args(int argc,
char **argv,
const struct ftag_command *commands,
int command_count)
{
assert(argc > 0);
assert(command_count > 0);
for (int i = 0; i < command_count; i++) {
if (strcmp(argv[0], commands[i].name) == 0) {
commands[i].func(argc-1, argv+1);
return;
}
}
}
int main(int argc, char *argv[])
{
if (argc == 1) {
ftag_help(0, NULL);
exit(EXIT_FAILURE);
}
parse_args(argc-1, argv+1, toplevel_commands, toplevel_command_count);
return EXIT_SUCCESS;
}
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