1 files changed, 91 insertions, 0 deletions
diff --git a/frontend/config.c b/frontend/config.c
new file mode 100644
index 0000000..027fb8e
--- /dev/null
+++ b/frontend/config.c
@@ -0,0 +1,91 @@
+#include "common.h"
+#include "frontend/main.h"
+#include "frontend/config.h"
+
+typedef enum {
+  CE_TYPE_STR = 0,
+  CE_TYPE_NUM = 4,
+} config_entry_type;
+
+#define CE_STR(val) \
+	{ #val, CE_TYPE_STRING, val }
+
+#define CE_NUM(val) \
+	{ #val, CE_TYPE_NUM, &val }
+
+static const struct {
+  const char *name;
+  config_entry_type type;
+  void *val;
+} config_data[] = {
+  CE_NUM(dynarec_enable),
+  CE_NUM(frameskip_style),
+  CE_NUM(max_frameskip),
+  CE_NUM(scaling_mode),
+  CE_NUM(color_correct),
+  CE_NUM(lcd_blend),
+  CE_NUM(show_fps),
+};
+
+void config_write(FILE *f)
+{
+  for (int i = 0; i < array_size(config_data); i++) {
+    switch (config_data[i].type)
+    {
+      case CE_TYPE_STR:
+        fprintf(f, "%s = %s\n", config_data[i].name, (char *)config_data[i].val);
+        break;
+      case CE_TYPE_NUM:
+        fprintf(f, "%s = %u\n", config_data[i].name, *(uint32_t *)config_data[i].val);
+        break;
+      default:
+        printf("unhandled type %d for %s\n", config_data[i].type, (char *)config_data[i].val);
+        break;
+    }
+  }
+}
+
+static void parse_str_val(char *cval, const char *src)
+{
+	char *tmp;
+	strncpy(cval, src, 256);
+	cval[256 - 1] = 0;
+	tmp = strchr(cval, '\n');
+	if (tmp == NULL)
+		tmp = strchr(cval, '\r');
+	if (tmp != NULL)
+		*tmp = 0;
+}
+
+static void parse_num_val(uint32_t *cval, const char *src)
+{
+  char *tmp = NULL;
+  uint32_t val;
+  val = strtoul(src, &tmp, 10);
+  if (tmp == NULL || src == tmp)
+    return; // parse failed
+
+  *cval = val;
+}
+
+void config_read(const char* cfg)
+{
+  for (int i = 0; i < array_size(config_data); i++) {
+    char *tmp;
+    
+    tmp = strstr(cfg, config_data[i].name);
+		if (tmp == NULL)
+			continue;
+		tmp += strlen(config_data[i].name);
+		if (strncmp(tmp, " = ", 3) != 0)
+			continue;
+		tmp += 3;
+
+    if (config_data[i].type == CE_TYPE_STR) {
+			parse_str_val(config_data[i].val, tmp);
+			continue;
+		}
+
+    parse_num_val(config_data[i].val, tmp);
+  }
+}