[gnome-epub-thumbnailer/wip/hadess/fix-cover-properties: 1/2] epub: Add debug output

[Bastien Nocera <hadess src gnome org>]

commit da4188830be98dc2da2b56be64f9a3455000f99f
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Aug 4 11:54:50 2021 +0200

    epub: Add debug output
    
    This makes it easier to check on the process without having to
    instrument the code manually.

 gnome-epub-thumbnailer.c | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/gnome-epub-thumbnailer.c b/gnome-epub-thumbnailer.c
index cc6830d..490f387 100644
--- a/gnome-epub-thumbnailer.c
+++ b/gnome-epub-thumbnailer.c
@@ -227,7 +227,10 @@ get_cover_path_from_root_file (const char *metafile,
                return NULL;
        }
 
+       g_debug ("Got root path '%s' from metafile", root_path);
        root_file = file_get_zipped_contents (input_filename, (GCompareFunc) g_strcmp0, root_path, 
&root_length);
+       if (root_file != NULL)
+               g_debug ("#### '%s' contents ####\n%s", root_path, root_file);
 
        doc = open_doc (root_file, root_length, "package");
        g_free (root_file);
@@ -242,15 +245,18 @@ get_cover_path_from_root_file (const char *metafile,
        content_name = get_prop_for_xpath (doc, xpath_ctx, "//ns:package/ns:metadata/ns:meta[@name='cover']", 
"content");
        if (!content_name)
                goto bail;
+       g_debug ("Found content_name '%s'", content_name);
 
        xpath = g_strdup_printf ("//ns:package/ns:manifest/ns:item[@id='%s']", content_name);
        g_free (content_name);
        cover_path = get_prop_for_xpath (doc, xpath_ctx, xpath, "href");
        g_free (xpath);
+       g_debug ("Found cover_path '%s'", cover_path);
 
        full_cover_path = resolve_cover_path (cover_path, root_path);
        g_free (cover_path);
        cover_path = full_cover_path;
+       g_debug ("Resolved full_cover_path '%s'", cover_path);
 
 bail:
        g_free (root_path);
@@ -276,6 +282,7 @@ file_to_data (const char  *path,
                g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Could not find 
META-INF/container.xml file");
                return NULL;
        }
+       g_debug ("#### META-INF/container.xml contents ####\n %s", metafile);
        cover_path = get_cover_path_from_root_file (metafile, length, path);
        g_free (metafile);
        if (cover_path != NULL) {