Checkpoint file split.

editor.c

@@ -0,0 +1,124 @@
+/* editor.c - editor-wide state and functions */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "abuf.h"
+#include "buffer.h"
+#include "core.h"
+#include "editor.h"
+#include "term.h"
+
+/*
+ * Global editor instance
+ */
+struct editor editor = {
+	.cols = 0,
+	.rows = 0,
+	.curx = 0,
+	.cury = 0,
+	.rx = 0,
+	.mode = 0,
+	.nrows = 0,
+	.rowoffs = 0,
+	.coloffs = 0,
+	.row = NULL,
+	.killring = NULL,
+	.kill = 0,
+	.no_kill = 0,
+	.filename = NULL,
+	.dirty = 0,
+	.dirtyex = 0,
+	.mark_set = 0,
+	.mark_curx = 0,
+	.mark_cury = 0,
+	.uarg = 0,
+	.ucount = 0,
+	.msgtm = 0,
+	.buffers = NULL,
+	.bufcount = 0,
+	.curbuf = -1,
+};
+
+
+void
+editor_set_status(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsnprintf(editor.msg, sizeof(editor.msg), fmt, ap);
+	va_end(ap);
+
+	editor.msgtm = time(NULL);
+}
+
+
+void
+init_editor(void)
+{
+	editor.cols = 0;
+	editor.rows = 0;
+
+	if (get_winsz(&editor.rows, &editor.cols) == -1) {
+		die("can't get window size");
+	}
+	editor.rows--; /* status bar */
+	editor.rows--; /* message line */
+
+	editor.curx = editor.cury = 0;
+	editor.rx   = 0;
+
+	editor.nrows   = 0;
+	editor.rowoffs = editor.coloffs = 0;
+	editor.row     = NULL;
+
+	/* don't clear out the kill ring:
+	 * killing / yanking across files is helpful, and killring
+	 * is initialized to NULL at program start.
+	 */
+	editor.kill    = 0;
+	editor.no_kill = 0;
+
+	editor.msg[0] = '\0';
+	editor.msgtm  = 0;
+
+	editor.dirty     = 0;
+	editor.mark_set  = 0;
+	editor.mark_cury = editor.mark_curx = 0;
+
+	/* initialize buffer system on first init */
+	if (editor.buffers == NULL && editor.bufcount == 0) {
+		buffers_init();
+	}
+}
+
+
+void
+reset_editor(void)
+{
+	/* Clear current working set. Notably, does not reset terminal
+	 * or buffers list. */
+	for (int i = 0; i < editor.nrows; i++) {
+		ab_free(&editor.row[i]);
+	}
+	free(editor.row);
+
+	editor.row     = NULL;
+	editor.nrows   = 0;
+	editor.rowoffs = editor.coloffs = 0;
+	editor.curx    = editor.cury    = 0;
+	editor.rx      = 0;
+
+	if (editor.filename != NULL) {
+		free(editor.filename);
+		editor.filename = NULL;
+	}
+
+	editor.dirty     = 0;
+	editor.mark_set  = 0;
+	editor.mark_cury = editor.mark_curx = 0;
+}