epub: Add metadata function.

Still a no-op except for returning the document format.

2 files changed, 18 insertions, 0 deletions

diff --git a/source/html/epub-doc.c b/source/html/epub-doc.c
index a2871889..4610c64a 100644
--- a/source/html/epub-doc.c
+++ b/source/html/epub-doc.c
@@ -284,6 +284,14 @@ epub_parse_header(fz_context *ctx, epub_document *doc)
 	fz_drop_xml(ctx, content_opf);
 }
 
+int
+epub_lookup_metadata(fz_context *ctx, fz_document *doc_, const char *key, char *buf, int size)
+{
+	if (!strcmp(key, "format"))
+		return fz_strlcpy(buf, "EPUB", size);
+	return -1;
+}
+
 static fz_document *
 epub_init(fz_context *ctx, fz_archive *zip)
 {
@@ -297,6 +305,7 @@ epub_init(fz_context *ctx, fz_archive *zip)
 	doc->super.layout = epub_layout;
 	doc->super.count_pages = epub_count_pages;
 	doc->super.load_page = epub_load_page;
+	doc->super.lookup_metadata = epub_lookup_metadata;
 
 	fz_try(ctx)
 	{
diff --git a/source/html/html-doc.c b/source/html/html-doc.c
index 366a7378..101a4c42 100644
--- a/source/html/html-doc.c
+++ b/source/html/html-doc.c
@@ -103,6 +103,14 @@ htdoc_load_page(fz_context *ctx, fz_document *doc_, int number)
 	return (fz_page*)page;
 }
 
+int
+htdoc_lookup_metadata(fz_context *ctx, fz_document *doc_, const char *key, char *buf, int size)
+{
+	if (!strcmp(key, "format"))
+		return fz_strlcpy(buf, "XHTML", size);
+	return -1;
+}
+
 static fz_document *
 htdoc_open_document_with_stream(fz_context *ctx, fz_stream *file)
 {
@@ -140,6 +148,7 @@ htdoc_open_document(fz_context *ctx, const char *filename)
 	doc->super.layout = htdoc_layout;
 	doc->super.count_pages = htdoc_count_pages;
 	doc->super.load_page = htdoc_load_page;
+	doc->super.lookup_metadata = htdoc_lookup_metadata;
 
 	doc->zip = fz_open_directory(ctx, dirname);
 	doc->set = fz_new_html_font_set(ctx);