implement basic user settings

src/settings.c

@@ -0,0 +1,103 @@
+/*  settings.c
+ *
+ *
+ *  Copyright (C) 2014 Toxic All Rights Reserved.
+ *
+ *  This file is part of Toxic.
+ *
+ *  Toxic 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Toxic 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 Toxic.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "toxic_windows.h"
+#include "configdir.h"
+#include "settings.h"
+
+static void uset_autolog(struct user_settings *s, int val);
+static void uset_time(struct user_settings *s, int val);
+static void uset_colours(struct user_settings *s, int val);
+
+struct {
+    const char *name;
+    void (*func)(struct user_settings *s, int val);
+} user_settings_list[] = { 
+    { "autolog",        uset_autolog    }, 
+    { "time",           uset_time       },
+    { "colour_theme",   uset_colours    },
+};
+
+static void uset_autolog(struct user_settings *s, int val) 
+{ 
+    /* default off if invalid value */
+    s->autolog = val == AUTOLOG_ON ? AUTOLOG_ON : AUTOLOG_OFF;
+}
+
+static void uset_time(struct user_settings *s, int val) 
+{
+    /* default to 24 hour time if invalid value */
+    s->time = val == TIME_12 ? TIME_12 : TIME_24;
+}
+
+static void uset_colours(struct user_settings *s, int val)
+{
+    /* use default toxic colours if invalid value */
+    s->colour_theme = val == NATIVE_COLS ? NATIVE_COLS : DFLT_COLS;
+}
+
+int settings_load(struct user_settings *s, char *path)
+{
+    char *user_config_dir = get_user_config_dir();
+    FILE *fp = NULL;
+
+    if (path) {
+        fp = fopen(path, "r");
+    } else {
+        char dflt_path[MAX_STR_SIZE];
+        snprintf(dflt_path, sizeof(dflt_path), "%s%stoxic.conf", user_config_dir, CONFIGDIR);
+        fp = fopen(dflt_path, "r");
+    }
+
+    free(user_config_dir);
+
+    if (fp == NULL)
+        return -1;
+
+    char line[MAX_STR_SIZE];
+
+    while (fgets(line, sizeof(line), fp)) {
+        if (line[0] == '#' || !line[0])
+            continue;
+
+        char *name = strtok(line, ":");
+        char *val_s = strtok(NULL, ";");
+
+        if (name == NULL || val_s == NULL)
+            continue;
+
+        int val = atoi(val_s);
+        int i;
+
+        for (i = 0; i < NUM_SETTINGS; ++i) {
+            if (!strcmp(user_settings_list[i].name, name)) {
+                (user_settings_list[i].func)(s, val);
+                break;
+            }
+        }
+    }
+
+    return 0;
+}