first!

src/parser.c

@@ -0,0 +1,86 @@
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include "parser.h"
+
+#define YesOrNo() ((strcmp(val, "yes") > 0) ? 1 : 0)
+
+FILE *OpenFile(const char *file, const char *mode) {
+	FILE *fp = fopen(file, mode);
+	if (fp == NULL)
+		fprintf(stderr, "Can not open %s with %s mode\n", file, mode);
+
+	return fp;
+}
+
+int ReadCfg(CONFIG *cfg) {
+	memset(cfg, 0, sizeof(CONFIG));
+
+	FILE *fp = OpenFile(CONFIG_FILE, "r");
+	if (fp == NULL)
+		return 1;
+
+	char *str = NULL;
+	ssize_t bytes = 0;
+	size_t n = 0;
+
+	while ((bytes = getline(&str, &n, fp)) > 0) {
+		char *tok_rest = str;
+		char *var = strtok_r(tok_rest, " ", &tok_rest);
+		char *val = strtok_r(tok_rest, " ", &tok_rest);
+
+		if (var == NULL || val == NULL)
+			continue;
+
+		if (var[0] == '#')
+			continue;
+
+		else if (!strcmp(var, "fullscreen"))
+			cfg->fullscreen = YesOrNo();
+
+		else if (!strcmp(var, "fullscreen_custom"))
+			cfg->fullscreen_custom = YesOrNo();
+
+		else if (!strcmp(var, "vsync"))
+			cfg->vsync = YesOrNo();
+
+		else if (!strcmp(var, "sound_volume"))
+			cfg->sound_volume = atoi(val);
+
+		else if (!strcmp(var, "music_volume"))
+			cfg->music_volume = atoi(val);
+
+		else if (!strcmp(var, "screen_h"))
+			cfg->screen_h = atoi(val);
+
+		else if (!strcmp(var, "screen_w"))
+			cfg->screen_w = atoi(val);
+
+		else if (!strcmp(var, "saved_scene"))
+			cfg->saved_scene = atoi(val);
+	}
+
+	if (str)
+		free(str);
+
+	fclose(fp);
+	return 0;
+}
+
+int WriteCfg(const CONFIG cfg) {
+	FILE *fp = OpenFile(CONFIG_FILE, "w");
+	if (fp == NULL)
+		return 1;
+
+	fprintf(fp, "fullscreen %s\n", (cfg.fullscreen) ? "yes" : "no");
+	fprintf(fp, "fullscreen_custom %s\n", (cfg.fullscreen_custom) ? "yes" : "no");
+	fprintf(fp, "vsync %s\n", (cfg.vsync) ? "yes" : "no");
+	fprintf(fp, "sound_volume %d\n", cfg.sound_volume);
+	fprintf(fp, "music_volume %d\n", cfg.music_volume);
+	fprintf(fp, "screen_h %d\n", cfg.screen_h);
+	fprintf(fp, "screen_w %d\n", cfg.screen_w);
+	fprintf(fp, "saved_scene %d\n", cfg.saved_scene);
+
+	fclose(fp);
+	return 0;
+}