1 files changed, 144 insertions, 0 deletions
diff --git a/qbuffers.cpp b/qbuffers.cpp
new file mode 100644
index 0000000..03f9562
--- /dev/null
+++ b/qbuffers.cpp
@@ -0,0 +1,144 @@
+#include <bsd/sys/queue.h>
+
+#include <glib.h>
+#include <glib/gprintf.h>
+#include <glib/gstdio.h>
+
+#include <Scintilla.h>
+
+#include "sciteco.h"
+#include "undo.h"
+#include "parser.h"
+#include "qbuffers.h"
+
+Ring ring;
+
+bool
+Buffer::load(const gchar *filename)
+{
+	gchar *contents;
+	gsize size;
+
+	edit();
+	editor_msg(SCI_CLEARALL);
+
+	/* FIXME: prevent excessive allocations by reading file into buffer */
+	if (!g_file_get_contents(filename, &contents, &size, NULL))
+		return false;
+	editor_msg(SCI_APPENDTEXT, size, (sptr_t)contents);
+	g_free(contents);
+
+	editor_msg(SCI_GOTOPOS, 0);
+	editor_msg(SCI_SETSAVEPOINT);
+
+	set_filename(filename);
+
+	return true;
+}
+
+void
+Buffer::close(void)
+{
+	LIST_REMOVE(this, buffers);
+
+	if (filename)
+		message_display(GTK_MESSAGE_INFO,
+				"Removed file \"%s\" from the ring",
+				filename);
+	else
+		message_display(GTK_MESSAGE_INFO,
+				"Removed unnamed file from the ring.");
+}
+
+Buffer *
+Ring::find(const gchar *filename)
+{
+	Buffer *cur;
+
+	LIST_FOREACH(cur, &head, buffers)
+		if (!g_strcmp0(cur->filename, filename))
+			return cur;
+
+	return NULL;
+}
+
+bool
+Ring::edit(const gchar *filename)
+{
+	bool new_in_ring = false;
+	Buffer *buffer = find(filename);
+
+	if (current)
+		current->dot = editor_msg(SCI_GETCURRENTPOS);
+
+	if (buffer) {
+		buffer->edit();
+	} else {
+		new_in_ring = true;
+
+		buffer = new Buffer();
+		LIST_INSERT_HEAD(&head, buffer, buffers);
+
+		if (g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
+			buffer->load(filename);
+
+			message_display(GTK_MESSAGE_INFO,
+					"Added file \"%s\" to ring", filename);
+		} else {
+			buffer->edit();
+			buffer->set_filename(filename);
+
+			if (filename)
+				message_display(GTK_MESSAGE_INFO,
+						"Added new file \"%s\" to ring",
+						filename);
+			else
+				message_display(GTK_MESSAGE_INFO,
+						"Added new unnamed file to ring.");
+		}
+	}
+
+	current = buffer;
+
+	return new_in_ring;
+}
+
+void
+Ring::close(void)
+{
+	Buffer *buffer = current;
+
+	buffer->close();
+	current = LIST_NEXT(buffer, buffers) ? : LIST_FIRST(&head);
+	if (!current)
+		edit(NULL);
+
+	delete buffer;
+}
+
+Ring::~Ring()
+{
+	Buffer *buffer, *next;
+
+	LIST_FOREACH_SAFE(buffer, &head, buffers, next)
+		delete buffer;
+}
+
+/*
+ * Command states
+ */
+
+State *
+StateFile::done(const gchar *str)
+{
+	bool new_in_ring;
+
+	BEGIN_EXEC(&states.start);
+
+	ring.undo_edit();
+	new_in_ring = ring.edit(*str ? str : NULL);
+	if (new_in_ring)
+		ring.undo_close();
+
+	return &states.start;
+}