when writing, lookup the type of field and write that way

1 files changed, 20 insertions, 39 deletions

diff --git a/booki.c b/booki.c
index d2a6262..d9ecfbb 100644
--- a/booki.c
+++ b/booki.c
@@ -480,45 +480,26 @@ void write_book(BOOK book, FILE *output) {
     fwrite("[[books]]\n", 1, 10, output);
     char str[100];
     int size;
-    if (book.id) {
-        size = sprintf(str, "id = %d\n", book.id);
-        fwrite(str, 1, size, output);
-    }
-    if (book.isbn.ptr) {
-        size = sprintf(str, "isbn = \"%.*s\"\n", book.isbn.len, book.isbn.ptr);
-        fwrite(str, 1, size, output);
-    }
-    if (book.title.ptr) {
-        size = sprintf(str, "title = \"%.*s\"\n", book.title.len, book.title.ptr);
-        fwrite(str, 1, size, output);
-    }
-    if (book.author.ptr) {
-        size = sprintf(str, "author = ");
-        size += concat_es_toml(&(book.author), str + size);
-        fwrite(str, 1, size, output);
-    }
-    if (book.pages) {
-        size = sprintf(str, "pages = %d\n", book.pages);
-        fwrite(str, 1, size, output);
-    }
-    if (book.published) {
-        size = sprintf(str, "published = %d\n", book.published);
-        fwrite(str, 1, size, output);
-    }
-    if (book.language.ptr) {
-        size = sprintf(str, "language = ");
-        size += concat_es_toml(&(book.language), str + size);
-        fwrite(str, 1, size, output);
-    }
-    if (book.translator.ptr) {
-        size = sprintf(str, "translator = ");
-        size += concat_es_toml(&(book.translator), str + size);
-        fwrite(str, 1, size, output);
-    }
-    if (book.on.ptr) {
-        size = sprintf(str, "on = ");
-        size += concat_es_toml(&(book.on), str + size);
-        fwrite(str, 1, size, output);
+
+    DataField datafield;
+    ES string_field;
+    int number_field;
+    for (int i = 0; i < BOOK_FIELDS_COUNT; i++) {
+        datafield = BOOK_FIELDS[i];
+        if (datafield.type == booki_string) {
+            string_field = get_string_field(book, datafield.name);
+            if (!string_field.ptr)
+                continue;
+            size = sprintf(str, "%s = ", datafield.name);
+            size += concat_es_toml(&string_field, str + size);
+            fwrite(str, 1, size, output);
+        } else if (datafield.type == booki_number) {
+            number_field = get_number_field(book, datafield.name);
+            if (!number_field)
+                continue;
+            size = sprintf(str, "%s = %d\n", datafield.name, number_field);
+            fwrite(str, 1, size, output);
+        }
     }
 
     fwrite("\n", 1, 1, output); // trailing newline between books