1 files changed, 114 insertions, 0 deletions
diff --git a/fastiv.c b/fastiv.c
new file mode 100644
index 0000000..2ed8ec1
--- /dev/null
+++ b/fastiv.c
@@ -0,0 +1,114 @@
+//
+// fastiv.c: fast image viewer
+//
+// 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.
+//
+
+#include <gtk/gtk.h>
+#include <glib.h>
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <locale.h>
+
+#include "config.h"
+#include "fastiv-view.h"
+
+// --- Utilities ---------------------------------------------------------------
+
+static void
+exit_fatal(const gchar *format, ...) G_GNUC_PRINTF(1, 2);
+
+static void
+exit_fatal(const gchar *format, ...)
+{
+	va_list ap;
+	va_start(ap, format);
+
+	gchar *format_nl = g_strdup_printf("%s\n", format);
+	vfprintf(stderr, format_nl, ap);
+	free(format_nl);
+
+	va_end(ap);
+	exit(EXIT_FAILURE);
+}
+
+// --- Main --------------------------------------------------------------------
+
+struct {
+	// TODO(p): Add some state variables.
+	//  - Directory filenames, index within the list.
+} g;
+
+int
+main(int argc, char *argv[])
+{
+	if (!setlocale(LC_CTYPE, ""))
+		exit_fatal("cannot set locale");
+
+	gboolean show_version = FALSE;
+	gchar **files = NULL;
+	const GOptionEntry options[] = {
+		{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &files,
+			NULL, "[FILE | DIRECTORY]..."},
+		{"version", 'V', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
+		 &show_version, "output version information and exit", NULL},
+		{},
+	};
+
+	GError *error = NULL;
+	if (!gtk_init_with_args(&argc, &argv, " - fast image viewer",
+		options, NULL, &error))
+		exit_fatal("%s", error->message);
+	if (show_version) {
+		printf(PROJECT_NAME " " PROJECT_VERSION "\n");
+		return 0;
+	}
+
+	GtkWidget *view = g_object_new(FASTIV_TYPE_VIEW, NULL);
+	GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+	g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
+	gtk_container_add(GTK_CONTAINER(window), view);
+
+	// TODO(p): Load directory entries, store in `g`.
+	//  - Only when there's just one filename.
+	//     - stat() it if it's a dictionary or a filename;
+	//       can just blindly try to readdir(), followed by dirname and retry
+	//     - But how do we filter these? We don't want to have non-images
+	//       on the list.
+	//  - When there are multiple, just take them verbatim as a list.
+	//     - Not entirely sure about how much sense this makes,
+	//       we might want to rather open several windows, or simply fork,
+	//       or even disallow this completely.
+	gsize files_len = g_strv_length(files);
+	if (files_len) {
+		GDir *dir = NULL;
+		if ((dir = g_dir_open(files[0], 0, NULL))) {
+			const gchar *name = NULL;
+			while ((name = g_dir_read_name(dir)))
+				;
+			g_dir_close(dir);
+		}
+
+		if (!fastiv_view_open(FASTIV_VIEW(view), files[0], &error))
+			g_printerr("error: %s\n", error->message);
+		else
+			gtk_window_set_title(GTK_WINDOW(window), files[0]);
+	}
+
+	gtk_widget_show_all(window);
+	gtk_main();
+	return 0;
+}