Start implementing editor commands

This first step allows you to press the semicolon key to enter command
mode, where you can type into a command line. Currently, pressing enter
when in command mode will clear the command line but since there are no
commands implemented it doesn't matter what you type in there.

1 files changed, 31 insertions, 1 deletions

diff --git a/input.c b/input.c
index 73889bd..36670e2 100644
--- a/input.c
+++ b/input.c
@@ -4,10 +4,25 @@
 #include "file.h"
 #include "line.h"
 
+void input_process_textinput(struct editor_state *editor, const char *text)
+{
+	/* Ignore the first letter after entering insert mode. */
+	if (editor->pressed_insert_key) {
+		editor->pressed_insert_key = 0;
+		return;
+	}
+
+	if (editor->mode == EDITOR_MODE_INSERT) {
+		editor_insert_char(editor, *text);
+	} else if (editor->mode == EDITOR_MODE_COMMAND) {
+		textbuf_append(&editor->cmdline, text, 1);
+	}
+}
+
 void editor_process_keypress(struct editor_state *editor, SDL_Keysym *keysym)
 {
 	/* Handle keypresses for typing modes separately. */
-	if (editor->mode != EDITOR_MODE_NORMAL) {
+	if (editor->mode == EDITOR_MODE_INSERT) {
 		if (keysym->sym == SDLK_BACKSPACE)
 			editor_delete_char(editor);
 
@@ -22,6 +37,18 @@ void editor_process_keypress(struct editor_state *editor, SDL_Keysym *keysym)
 		return;
 	}
 
+	if (editor->mode == EDITOR_MODE_COMMAND) {
+		if (keysym->sym == SDLK_BACKSPACE)
+			textbuf_delete(&editor->cmdline);
+
+		if (keysym->sym == SDLK_RETURN)
+			editor_run_command(editor);
+
+		if (keysym->sym == SDLK_ESCAPE)
+			editor->mode = EDITOR_MODE_NORMAL;
+		return;
+	}
+
 	switch (keysym->sym) {
 		/* TODO: Reimplement page up/down on Shift+W/S. */
 		case SDLK_w:
@@ -80,5 +107,8 @@ void editor_process_keypress(struct editor_state *editor, SDL_Keysym *keysym)
 		case SDLK_SLASH:
 			editor_find(editor);
 			break;
+		case SDLK_SEMICOLON:
+			editor->mode = EDITOR_MODE_COMMAND;
+			break;
 	}
 }