Split out fastiv-io.h, move media types list

fastiv-browser.c

@@ -18,6 +18,7 @@
 #include <math.h>
 
 #include "fastiv-browser.h"
+#include "fastiv-io.h"
 #include "fastiv-view.h"
 
 typedef struct entry Entry;

fastiv-io.c

@@ -37,6 +37,20 @@
 #define WUFFS_CONFIG__MODULE__ZLIB
 #include "wuffs-mirror-release-c/release/c/wuffs-v0.3.c"
 
+// A subset of shared-mime-info that produces an appropriate list of
+// file extensions. Chiefly motivated by the suckiness of RAW images:
+// someone else will maintain the list of file extensions for us.
+const char *fastiv_io_supported_media_types[] = {
+	"image/bmp",
+	"image/gif",
+	"image/png",
+	"image/jpeg",
+#ifdef HAVE_LIBRAW
+	"image/x-dcraw",
+#endif  // HAVE_LIBRAW
+	NULL
+};
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
 #define FASTIV_IO_ERROR  fastiv_io_error_quark()

fastiv-io.h

@@ -0,0 +1,26 @@
+//
+// fastiv-io.h: image loaders
+//
+// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+//
+
+#pragma once
+
+#include <cairo.h>
+#include <glib.h>
+
+extern const char *fastiv_io_supported_media_types[];
+
+cairo_surface_t *fastiv_io_open(const gchar *path, GError **error);
+cairo_surface_t *fastiv_io_lookup_thumbnail(const gchar *target);

fastiv-view.c

@@ -17,6 +17,7 @@
 
 #include <math.h>
 
+#include "fastiv-io.h"
 #include "fastiv-view.h"
 
 struct _FastivView {

fastiv-view.h

@@ -24,7 +24,3 @@ G_DECLARE_FINAL_TYPE(FastivView, fastiv_view, FASTIV, VIEW, GtkWidget)
 
 /// Try to open the given file, synchronously, to be displayed by the widget.
 gboolean fastiv_view_open(FastivView *self, const gchar *path, GError **error);
-
-// Private, fastiv-io.c
-cairo_surface_t *fastiv_io_open(const gchar *path, GError **error);
-cairo_surface_t *fastiv_io_lookup_thumbnail(const gchar *target);

fastiv.c

@@ -27,6 +27,7 @@
 #include <fnmatch.h>
 
 #include "config.h"
+#include "fastiv-io.h"
 #include "fastiv-view.h"
 #include "fastiv-browser.h"
 
@@ -115,21 +116,6 @@ get_xdg_data_dirs(void)
 
 // Derived from shared-mime-info-spec 0.21.
 
-// TODO(p): Move to fastiv-io.c, expose the prototype in a header file
-// (perhaps finally start a new one for it).
-// A subset of shared-mime-info that produces an appropriate list of
-// file extensions. Chiefly motivated by the suckiness of RAW images:
-// someone else will maintain the list of file extensions for us.
-static const char *supported_media_types[] = {
-	"image/bmp",
-	"image/gif",
-	"image/png",
-	"image/jpeg",
-#ifdef HAVE_LIBRAW
-	"image/x-dcraw",
-#endif  // HAVE_LIBRAW
-};
-
 static void
 read_mime_subclasses(const gchar *path, GHashTable *subclass_sets)
 {
@@ -189,7 +175,7 @@ filter_mime_globs(const gchar *path, guint is_globs2, GHashTable *supported_set,
 }
 
 static gchar **
-get_supported_globs (void)
+get_supported_globs(const char **media_types)
 {
 	gchar **data_dirs = get_xdg_data_dirs();
 
@@ -208,8 +194,8 @@ get_supported_globs (void)
 	// but not aliases.
 	GHashTable *supported =
 		g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL);
-	for (gsize i = 0; i < G_N_ELEMENTS(supported_media_types); i++) {
-		add_applying_transitive_closure(supported_media_types[i],
+	while (*media_types) {
+		add_applying_transitive_closure(*media_types++,
 			subclass_sets, supported);
 	}
 	g_hash_table_destroy(subclass_sets);
@@ -363,8 +349,8 @@ on_open(void)
 
 	// NOTE: gdk-pixbuf has gtk_file_filter_add_pixbuf_formats().
 	GtkFileFilter *filter = gtk_file_filter_new();
-	for (gsize i = 0; i < G_N_ELEMENTS(supported_media_types); i++)
-		gtk_file_filter_add_mime_type(filter, supported_media_types[i]);
+	for (const char **p = fastiv_io_supported_media_types; *p; p++)
+		gtk_file_filter_add_mime_type(filter, *p);
 	gtk_file_filter_set_name(filter, "Supported images");
 	gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter);
 
@@ -496,7 +482,7 @@ main(int argc, char *argv[])
 		g_cclosure_new(G_CALLBACK(on_next), NULL, NULL));
 	gtk_window_add_accel_group(GTK_WINDOW(g.window), accel_group);
 
-	g.supported_globs = get_supported_globs();
+	g.supported_globs = get_supported_globs(fastiv_io_supported_media_types);
 	g.files = g_ptr_array_new_full(16, g_free);
 	gchar *cwd = g_get_current_dir();