Fully implement building entries

Including name and full path

src/main.c

@@ -50,11 +50,57 @@ int compare_library_entries(const void *a, const void *b) {
     return noh_sv_compare(lea.name, leb.name);
 }
 
+#define build_path(first, ...) build_path_((first), __VA_ARGS__, NULL)
+Noh_String build_path_(SV *first, ...) {
+    va_list args;
+    SV *elem_ = first;
+    va_start(args, first);
+    bool start = true;
+    Noh_String result = {0};
+
+    while (elem_ != NULL) {
+        SV elem = *elem_;
+        while (elem.count > 0) {
+            SV component = noh_sv_chop_by_delim(&elem, '/');
+            if (noh_sv_eq(component, sv(".."))) continue;
+
+            if (component.count > 0) {
+                if (start) start = false; else noh_string_append_cstr(&result, "/");
+                noh_string_append_sv(&result, component);
+            }
+        }
+
+        elem_ = va_arg(args, SV *);
+    }
+    va_end(args);
+
+    return result;
+}
+
+SV path_to_name(SV path) {
+    while (true) {
+        SV component = noh_sv_chop_by_delim(&path, '/');
+        if (path.count == 0) return component;
+    }
+}
+
+void set_modified_time(Library_Entry *entry) {
+    struct stat attr;
+    if (stat(noh_arena_sprintf(&temp, Nsv_Fmt, entry->full_path), &attr) == 0) {
+        struct tm *timeinfo = localtime(&attr.st_mtime);
+        entry->modified_at = *timeinfo;
+    } else {
+        entry->modified_at = (struct tm){0};
+    }
+}
+
 /**
  * Creates a Library entry from a dirent structure.
  */
 bool create_entry(struct dirent *dir_entry, const char *parent_path, Library_Entry *result) {
     SV name = sv(dir_entry->d_name);
+    SV parent_path_sv = sv(parent_path);
+    Noh_String full_path = build_path(&parent_path_sv, &name);
     int type = dir_entry->d_type;
 
     // Check if the entry is relevant.
@@ -62,24 +108,17 @@ bool create_entry(struct dirent *dir_entry, const char *parent_path, Library_Ent
     if (noh_sv_eq(name, sv(".")) || noh_sv_eq(name, sv(".."))) return false;
     if (type == DT_REG && !noh_sv_ends_with_ci(name, sv(".epub"))) return false;
 
-    // Allocate and populate library entry.
+    // Set entry data.
     result->is_dir = type == DT_DIR;
+    result->full_path = noh_sv_from_string(&full_path);
     result->name = noh_sv_copy_cstr(&temp, dir_entry->d_name);
-
-    // Load modified time.
-    struct stat attr;
-    if (stat(noh_arena_sprintf(&temp, "%s/"Nsv_Fmt, parent_path, Nsv_Arg(name)), &attr) == 0) {
-        struct tm *timeinfo = localtime(&attr.st_mtime);
-        result->modified_at = *timeinfo;
-    } else {
-        result->modified_at = (struct tm){0};
-    }
+    set_modified_time(result);
 
     return true;
 }
 
 char *format_library_entry(Library_Entry entry, char time_buffer[80]) {
-    strftime(time_buffer, 80, "%Y-%m-%d %H:%M:%S", &entry.modified_at);
+    strftime(time_buffer, 80, "%Y-%m-%d %H.%M.%S", &entry.modified_at);
 
     return noh_arena_sprintf(
         &temp,
@@ -121,29 +160,23 @@ static Noh_String create_feed_response(Library_Entry self_path, Library_Entries
 }
 
 static enum MHD_Result handle_opds(struct MHD_Connection *connection, SV url, SV base_path, SV username) {
-    Noh_String fs_path = {0};
-    noh_string_append_sv(&fs_path, base_path);
-    noh_string_append_cstr(&fs_path, "/");
-    noh_string_append_sv(&fs_path, username);
-    noh_string_append_cstr(&fs_path, "/");
-    noh_string_append_sv(&fs_path, url);
-    noh_string_append_null(&fs_path);
+    noh_arena_save(&temp);
+    Noh_String fs_path = build_path(&base_path, &username, &url);
 
     Library_Entry self_entry = {
         .is_dir = true,
         .full_path = noh_sv_from_string(&fs_path),
+        .name = path_to_name(noh_sv_from_string(&fs_path)),
         .modified_at = {0},
     };
-    (void)self_entry;
-
-    noh_log(NOH_INFO, "Physical path: "Nsv_Fmt, Nsv_Arg(self_entry.name));
+    set_modified_time(&self_entry);
+    noh_log(NOH_INFO, "Physical path: "Nsv_Fmt, Nsv_Arg(self_entry.full_path));
 
     DIR *dir = opendir(fs_path.elems);
     if (dir) {
         Library_Entries list = {0};
 
         // Build up list of entries.
-        noh_arena_save(&temp);
         struct dirent *entry = noh_arena_alloc(&temp, sizeof(struct dirent));
         while ((entry = readdir(dir)) != NULL) {
             Library_Entry result = {0};
@@ -167,10 +200,12 @@ static enum MHD_Result handle_opds(struct MHD_Connection *connection, SV url, SV
 
     } else if (errno == ENOENT) {
         closedir(dir);
+        noh_arena_reset(&temp);
         return send_response(connection, 404, sv(""), false);
 
     } else {
         noh_log(NOH_ERROR, "Opening directory failed.");
+        noh_arena_reset(&temp);
         return send_response(connection, 500, sv(""), false);
     }
 }