/* -*-c-*- -------------- mix_config.c : * Implementation of the functions declared in mix_config.h * ------------------------------------------------------------------ * $Id: mix_config.c,v 1.7 2001/09/18 22:49:56 jao Exp $ * ------------------------------------------------------------------ * Copyright (C) 2001 Free Software Foundation, Inc. * * 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. * */ #include #include #include #include #include #include "mix_config.h" const gchar *MIX_CONFIG_DIR = ".mdk"; static const gchar COMMENT_PREFIX_ = '#'; static const gchar *AUTOSAVE_KEY_ = "Autosave"; static const gchar *AUTOSAVE_YES_ = "True"; static const gchar *AUTOSAVE_NO_ = "False"; static const gchar *DEVICES_KEY_ = "Devices.dir"; static const gchar *HISTORY_KEY_ = "History.file"; static const gchar *HISTORY_SIZE_KEY_ = "History.size"; /* the config type */ struct mix_config_t { gchar *filename; /* full path to configuration file */ gboolean autosave; /* whether save on destroy */ GHashTable *items; /* configuration items */ }; /* create a new config handler, giving the dir and name of the config file */ mix_config_t * mix_config_new (const gchar *dirname, const gchar *filename) { static const gchar *DEF_DIRNAME_ = NULL; static const gchar *DEF_FILENAME_ = "config"; const gchar *autosave; FILE *f; mix_config_t *result = NULL; if (DEF_DIRNAME_ == NULL) DEF_DIRNAME_ = g_strconcat (g_get_home_dir (), G_DIR_SEPARATOR_S, MIX_CONFIG_DIR, NULL); if (dirname == NULL) dirname = DEF_DIRNAME_; if (filename == NULL) filename = DEF_FILENAME_; if (!mix_stat_dir (dirname, "configuration")) return NULL; result = g_new (mix_config_t, 1); result->filename = g_strdup_printf ("%s/%s", dirname, filename); result->items = g_hash_table_new (g_str_hash, g_str_equal); f = fopen (result->filename, "r"); if (f != NULL) { enum {LEN = 256}; gchar buffer[LEN]; gchar *line = buffer; while (!feof (f)) { line = fgets (line, LEN, f); if (line) line = g_strstrip (line); if (line && line[0] != COMMENT_PREFIX_) { gchar **vals = g_strsplit (line, "=", 2); g_hash_table_insert (result->items, (gpointer)g_strdup (g_strstrip (vals[0])), (gpointer)g_strdup (g_strstrip (vals[1]))); g_strfreev (vals); } } fclose (f); } autosave = mix_config_get (result, AUTOSAVE_KEY_); result->autosave = autosave && !g_strcasecmp (autosave, AUTOSAVE_YES_); return result; } /* delete a config handler, saving the configuration if needed */ void mix_config_delete (mix_config_t *config) { g_return_if_fail (config != NULL); if (mix_config_is_autosave (config)) mix_config_save (config); g_free (config->filename); g_hash_table_destroy (config->items); g_free (config); } /* get the config filename */ const gchar * mix_config_get_filename (const mix_config_t *config) { g_return_val_if_fail (config != NULL, NULL); return config->filename; } /* get a config item's value from its key */ const gchar * mix_config_get (const mix_config_t *config, const gchar *key) { g_return_val_if_fail (config != NULL, NULL); g_return_val_if_fail (key != NULL, NULL); return (const gchar*)g_hash_table_lookup (config->items, key); } gint mix_config_get_integer (const mix_config_t *config, const gchar *key) { const gchar *val; g_return_val_if_fail (config != NULL, 0); g_return_val_if_fail (key != NULL, 0); val = mix_config_get (config, key); if (!val) return 0; return atoi (val); } /* update (or create if it does not exist) a new config item */ void mix_config_update (mix_config_t *config, const gchar *key, const gchar *value) { gpointer okey = NULL; gpointer oval = NULL; g_return_if_fail (config != NULL); g_return_if_fail (key != NULL); g_return_if_fail (value != NULL); if (g_hash_table_lookup_extended (config->items, key, &okey, &oval)) { if (oval != value) { g_free (oval); oval = (gpointer)g_strdup (value); } } else { okey = (gpointer)g_strdup (key); oval = (gpointer)g_strdup (value); } g_hash_table_insert (config->items, okey, oval); } void mix_config_update_integer (mix_config_t *config, const gchar *key, gint value) { gchar *val; g_return_if_fail (config != NULL); g_return_if_fail (key != NULL); val = g_strdup_printf ("%d", value); mix_config_update (config, key, val); g_free (val); } void mix_config_remove (mix_config_t *config, const gchar *key) { gchar *val; g_return_if_fail (config != NULL); g_return_if_fail (key != NULL); val = g_hash_table_lookup (config->items, key); if (val != NULL) { g_hash_table_remove (config->items, key); g_free (val); } } /* save the current configuration */ static void save_ (gpointer key, gpointer value, gpointer file) { fprintf ((FILE *)file, "%s=%s\n", (char *)key, (char *)value); } void mix_config_save (const mix_config_t *config) { FILE *f; g_return_if_fail (config != NULL); f = fopen (config->filename, "w"); if (!f) { g_warning ("Unable to open config file %s (%s)", config->filename, g_strerror (errno)); return; } g_hash_table_foreach (config->items, save_, (gpointer)f); fclose (f); } /* set autosave on delete flag */ void mix_config_set_autosave (mix_config_t *config, gboolean autosave) { mix_config_update (config, AUTOSAVE_KEY_, autosave? AUTOSAVE_YES_ : AUTOSAVE_NO_); config->autosave = autosave; } gboolean mix_config_is_autosave (const mix_config_t *config) { g_return_val_if_fail (config != NULL, FALSE); return config->autosave; } /* devices dir*/ void mix_config_set_devices_dir (mix_config_t *config, const gchar *dirname) { g_return_if_fail (config != NULL); g_return_if_fail (dirname != NULL); if (mix_stat_dir (dirname, "devices")) mix_config_update (config, DEVICES_KEY_, dirname); } extern const gchar * mix_config_get_devices_dir (const mix_config_t *config) { g_return_val_if_fail (config != NULL, NULL); return mix_config_get (config, DEVICES_KEY_); } /* history file. if relative path, config dir taken as root */ void mix_config_set_history_file (mix_config_t *config, const gchar *path) { g_return_if_fail (config != NULL); g_return_if_fail (path != NULL); if (g_path_is_absolute (path)) { mix_config_update (config, HISTORY_KEY_, path); } else { gchar *base = g_dirname (config->filename); gchar *hf = g_strconcat (base, G_DIR_SEPARATOR_S, path, NULL); mix_config_update (config, HISTORY_KEY_, hf); g_free (hf); g_free (base); } } const gchar * mix_config_get_history_file (const mix_config_t *config) { g_return_val_if_fail (config != NULL, NULL); return mix_config_get (config, HISTORY_KEY_); } void mix_config_set_history_size (mix_config_t *config, gint s) { g_return_if_fail (config != NULL); g_return_if_fail (s >= 0); mix_config_update_integer (config, HISTORY_SIZE_KEY_, s); } gint mix_config_get_history_size (const mix_config_t *config) { g_return_val_if_fail (config != NULL, 0); return mix_config_get_integer (config, HISTORY_SIZE_KEY_); }
