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appconfig.c

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/* GtkSQL -- an interactive graphical query tool for PostgreSQL
 * Copyright (C) 1998-2003  Lionel ULMER, Darryl Luff
 * $Id: appconfig_8c-source.html,v 1.5 2004/05/09 09:31:54 darryll Exp $
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * Some config items are stored in a gtk resource file int he standard gtk format.
 * But gtk doesnt seem to allow you to put arbitrary things in there. So the 
 * remainder of things are stored in a simple text config file.
 *
 * This module handles the differences transparently, so the application doesn't need
 * to know about these seperate files.
 */

#include "../config.h"

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include "appconfig.h"
#include "buf.h"
#include "dbapi.h"
#include "luaif.h"

#define CONFIG_DIRNAME ".gtksql"

#define CONFIG_FILENAME "gtksql.conf"

#define CONTACT "http://gtksql.sourceforge.net/"

#ifdef USE_LUA
#define USAGE   "gtksql [-h] [-f scriptfile] [-s \"script\"]\n\n" \
                "\t-h              Show usage help\n"   \
                "\t-f scriptfile   Run the script in the named file\n"  \
                "\t-s \"script\"     Run the script given on the command line\n"

#define ARGSPEC "hf:s:"
#else
#define USAGE   "gtksql [-h] \n\n" \
                "\t-h              Show usage help\n"

#define ARGSPEC "h"
#endif

static char *cfgDirname = NULL;

static char *currentDir = NULL;


void cfg_show_banner(void)
{
    printf("%s Version %s\n%s\n", PACKAGE, VERSION, CONTACT);
    printf("Support for:\n");
    printf("\t      MySQL:\t");
#ifdef USE_MYSQL
    printf("Yes\n");
#else
    printf("No\n");
#endif
    printf("\t PostgreSQL:\t");
#ifdef USE_POSTGRESQL
    printf("Yes\n");
#else
    printf("No\n");
#endif

    printf("\tLUA Scripts:\t");
#ifdef USE_LUA
    printf("Yes\n");
#else
    printf("No\n");
#endif

    printf("\t      XPath:\t");
#ifdef USE_XPATH
    printf("Yes\n");
#else
    printf("No\n");
#endif
}

void cfg_show_usage(void)
{
    cfg_show_banner();
    printf("\nUSAGE: %s\n", USAGE);
}

static void cfg_set_defaults(void)
{
    /* Dont have to do anything. Defaults hard-coded. */
}

int cfg_parse_cmdline(int argc, char *argv[])
{
    char c;
    while ((c = getopt(argc, argv, ARGSPEC)) != -1) {
        switch (c) {
        case 'c':
            /* Connect to a URL. */
            db_connect_url(optarg);
            break;
#ifdef USE_LUA
        case 'f':
            /* Run a script file. */
            luaif_runfile(optarg);
            break;
        case 's':
            /* Run a script directly. */
            luaif_runstring(optarg);
            break;
#endif
        case 'h':
            cfg_show_usage();
            break;
        }
    }
    return 0;
}

void cfg_init(void)
{
    cfg_set_defaults();
}

char *cfg_get_config_dir(void)
{
    char *homedir;
    int len;
    homedir = getenv("HOME");

    if (!homedir) {
        printf("Could not resolve home directory");
        return NULL;
    }

    /* Set the current dir if it's still NULL. */
    if (currentDir == NULL) {
        cfg_set_current_dir(homedir);
    }

    len = strlen(homedir) + 1 + strlen(CONFIG_DIRNAME) + 1;
    if (cfgDirname)
        free(cfgDirname);

    cfgDirname = malloc(len);
    if (cfgDirname) {
        snprintf(cfgDirname, len, "%s/%s", homedir, CONFIG_DIRNAME);
        cfgDirname[len - 1] = '\0';
    }
    printf("Using config directory %s", cfgDirname);

    if (chdir(cfgDirname) == -1) {     /* couldnt change to it */
        if (errno == ENOENT) {         /* didnt exist, try and create it */
            if (mkdir(cfgDirname, 0755) == -1) {
                perror("Could not create config directory");
                free(cfgDirname);
                cfgDirname = NULL;
                return NULL;
            }
        }
        else {
            perror("changing to config directory");
            free(cfgDirname);
            cfgDirname = NULL;
            return NULL;
        }
    }
    return cfgDirname;
}

char *cfg_get_current_dir(void)
{
    if (!currentDir)
        currentDir = strdup(getenv("HOME"));

    if (!currentDir)
        cfg_set_current_dir(".");

    return currentDir;
}

static ABuf *wsname = NULL;
char *cfg_get_default_wsname(void)
{
#define DEFAULT_WSNAME  "workspace"
    wsname = buf_strcpy(wsname, cfg_get_config_dir());
    wsname = buf_strcat(wsname, "/");
    wsname = buf_strcat(wsname, DEFAULT_WSNAME);

    return wsname->b_dat;
}

/*
static char *cfg_get_filename(void)
{
    gchar *dir;
    int len;
    if (!cfgname) {
        dir = cfg_get_config_dir();

        len = strlen(dir) + strlen(CONFIG_FILENAME) + 2;
        cfgname = g_malloc(len);
        if (!cfgname)
            return NULL;

        snprintf(cfgname, len, "%s/%s", dir, CONFIG_FILENAME);
    }
    return cfgname;
}
*/

/*static void cfg_print(void)
{
    printf("currentWS.changed = %d", ws_get_changed());
    printf("currentWS.dbname = %s\n", ws_get_db_name());
    printf("currentWS.dbtype = %s\n", ws_get_db_type());
    printf("currentWS.filename = %s\n", ws_get_filename());
    printf("currentWS.host = %s\n", ws_get_host());
    printf("currentWS.user = %s\n", ws_get_user());
    printf("currentWS.pass = %s\n", ws_get_pass());
    printf("currentWS.connection = %p\n", ws_get_connection());
    printf("currentWS.toolbar_conf = %d", ws_get_toolbarconf());
    printf("currentWS.windowX = %d", ws_get_window_x());
    printf("currentWS.windowY = %d", ws_get_window_y());
    printf("currentWS.windowWidth = %d", ws_get_window_width());
    printf("currentWS.windowHeight = %d", ws_get_window_height());
}
*/
void cfg_set_current_dir(const char *dir)
{
    if (currentDir != NULL) {
        free(currentDir);
        currentDir = NULL;
    }

    if (dir)
        currentDir = strdup(dir);
}

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