Fix: enlarge buffer when too small

src/main.cpp

@@ -53,12 +53,20 @@ static void process(const char* path) {
     const char* tagname {"user.xdg.tags"};
     std::vector<std::string> tags;
     std::vector<char> buf(1024);
-    ssize_t sz = getxattr(path, tagname, buf.data(), buf.size());
-    if (sz == -1) {
-        if (errno != ENODATA) {
-            throw_if_min1(sz);
+    ssize_t sz = 0;
+    do {
+        sz = getxattr(path, tagname, buf.data(), buf.size());
+        if (sz == -1) {
+            if (errno == ERANGE) {
+                buf.resize(buf.size() * 2);
+            } else if (errno == ENODATA) {
+                break;
+            } else {
+                throw_if_min1(-1);
+            }
         }
-    } else {
+    } while (sz == -1 && errno == ERANGE);
+    if (sz > 0) {
         std::string val(buf.data(), sz);
         tags = sc::split(val, ",");
     }