--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/config.c	Sun Aug 07 07:26:27 2022 -0400
@@ -0,0 +1,72 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "dirtools.h"
+#include "config.h"
+#ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#define MAX_LINE_LENGTH 128
+
+static unsigned int crc32b(unsigned char *message) {
+   int i, j;
+   unsigned int byte, crc, mask;
+
+   i = 0;
+   crc = 0xFFFFFFFF;
+   while (message[i] != 0) {
+      byte = message[i];            // Get next byte.
+      crc = crc ^ byte;
+      for (j = 7; j >= 0; j--) {    // Do eight times.
+         mask = -(crc & 1);
+         crc = (crc >> 1) ^ (0xEDB88320 & mask);
+      }
+      i = i + 1;
+   }
+   return ~crc;
+}
+
+int cfg_load(struct config_t* config) {
+	char* path = NULL;
+	char line[MAX_LINE_LENGTH] = {0};
+	FILE* config_fp;
+	path = dirtools_concat_paths(getenv("APPDATA"), "Winamp\\Plugins\\wgsdk\\config.txt");
+	config_fp = fopen(path, "r");
+	if (config_fp == NULL) {
+		free(path);
+		return 1;
+	}
+	while (fgets(line, MAX_LINE_LENGTH, config_fp)) {
+		switch (crc32b((unsigned char*)strtok(line, "="))) {
+			case 0x2a666380: // display_title
+				config->display_title = atoi(strtok(NULL, "="));
+				break;
+			case 0xbb631f7f: // show_elapsed_time
+				config->show_elapsed_time = atoi(strtok(NULL, "="));
+				break;
+			default:
+				break;
+		}
+	}
+	free(path);
+	return 0;
+}
+
+int cfg_save(struct config_t config) {
+	char* path = NULL;
+	FILE* config_fp;
+	path = dirtools_concat_paths(getenv("APPDATA"), "Winamp\\Plugins\\wgsdk");
+	assert(dirtools_create_directory(path));
+	free(path);
+	path = dirtools_concat_paths(getenv("APPDATA"), "Winamp\\Plugins\\wgsdk\\config.txt");
+	config_fp = fopen(path, "w");
+	if (config_fp == NULL) {
+		return 1;
+	}
+	fprintf(config_fp, "display_title=%d\n", config.display_title);
+	fprintf(config_fp, "show_elapsed_time=%d\n", config.show_elapsed_time);
+	fclose(config_fp);
+	return 0;
+}