actually download file to correct location

1 files changed, 42 insertions, 0 deletions

diff --git a/snag/src/util.c b/snag/src/util.c
index e79fd34..79c4b17 100644
--- a/snag/src/util.c
+++ b/snag/src/util.c
@@ -78,7 +78,49 @@ char* vastrcat_(int dummy, ...) {
 	char* output = malloc(len + 1);
     if (!output) return NULL;
 	char* p = output;
+    while ((arg = va_arg(args2, char*))) {
+		size_t alen = strlen(arg);
+		memcpy(p, arg, alen);
+		p += alen;
+    }
+	output[len] = '\0';
+    va_end(args2);
+
+	return output;
+}
+
+char* join_path_(int dummy, ...) {
+
+    va_list args;
+    va_list args2;
+    va_start(args, dummy);
+	va_copy(args2, args);
+
+	// note(jqj): some path joining libraries reset if they encounter an
+	//            absolute path, we could implement that easily, but I'm not
+	//            sure about it
+
+	// get len of output path
+	size_t len = 0;
+    char* arg = NULL;
+	int i = 0;
     while ((arg = va_arg(args, char*))) {
+		if (i > 0) len += 1;
+		len += strlen(arg) + 1;
+		++i;
+    }
+    va_end(args);
+
+	// allocate and build output
+	char* output = malloc(len + 1);
+    if (!output) return NULL;
+	char* p = output;
+    while ((arg = va_arg(args2, char*))) {
+		if (p != output) {
+			// add slash before every part except the first
+			*p = '/';
+			++p;
+		}
 		size_t alen = strlen(arg);
 		memcpy(p, arg, alen);
 		p += alen;