Exit program with Ctrl+C, this fixes #10

src/fn.c

@@ -3,7 +3,9 @@
 #define _GNU_SOURCE
 
 #include <signal.h>    // for signal, SIGWINCH
+#include <stdlib.h>    // for exit
 #include <stdio.h>     // for NULL
+#include <unistd.h>    // for STDOUT_FILENO
 
 #include "fn.h"
 #include "file.h"      // for editorOpen
@@ -12,10 +14,6 @@
 #include "terminal.h"  // for die, setWindowSize, enableRawMode
 
 
-// TODO: Put this somewhere else?
-void windowResizeCallback(int signum);
-void initEditor();
-  
 void windowResizeCallback(int signum) {
   if (signum != SIGWINCH) {
     return;
@@ -48,15 +46,22 @@ void initEditor() {
   E.screenrows -= 2;
 }
 
-int main(int argc, char *argv[]) {
+void exitEditor() {
+  // Restore from raw mode and exit
+  write(STDOUT_FILENO, "\x1b[2J", 4);
+  write(STDOUT_FILENO, "\x1b[H", 3);
+  exit(0);
+}
 
+
+int main(int argc, char *argv[]) {
   enableRawMode();
   initEditor();
   if (argc >= 2) {
     editorOpen(argv[1]);
   }
 
-  editorSetStatusMessage("HELP: Ctrl-S = save | Ctrl-Q = Quit | Ctrl-F = find");
+  editorSetStatusMessage("Ctrl-C = Quit, Ctrl-S = save, Ctrl-F = find");
 
   signal(SIGWINCH, windowResizeCallback);
 
@@ -65,5 +70,6 @@ int main(int argc, char *argv[]) {
     editorProcessKeypress();
   }
 
+  exitEditor();
   return 0;
 }

src/fn.h

@@ -6,7 +6,6 @@
 
 #define FN_VERSION "0.2"
 #define FN_TAB_STOP 4
-#define FN_QUIT_TIMES 2
 
 #define CTRL_KEY(k) ((k) & 0x1f)
 
@@ -37,9 +36,6 @@ enum editorHighlight {
 #define HL_HIGHLIGHT_NUMBERS (1<<0)
 #define HL_HIGHLIGHT_STRINGS (1<<1)
 
-
-/*** data ***/
-
 struct editorSyntax {
   char *filetype;
   char **filematch;
@@ -84,11 +80,11 @@ struct abuf {
   int len;
 };
 
-/*** filetypes ***/
-
-
-/*** prototypes ***/
 
+void windowResizeCallback(int signum);
+void initEditor();
+void exitEditor();
+  
 void editorSetStatusMessage(const char *fmt, ...);
 void editorRefreshScreen();
 char *editorPrompt(char *prompt, void (*callback)(char *, int));

src/input.c

@@ -1,6 +1,6 @@
 #include <ctype.h>     // for iscntrl
 #include <stdio.h>     // for NULL
-#include <stdlib.h>    // for exit, free
+#include <stdlib.h>    // for free
 #include <unistd.h>    // for STDOUT_FILENO
 
 #include "input.h"
@@ -88,27 +88,36 @@ void editorMoveCursor(int key) {
   }
 }
 
-
 void editorProcessKeypress() {
-  static int quit_times = FN_QUIT_TIMES;
-
+  static int wantToQuit = 0;
   int c = editorReadKey(); // Blocking!
 
   switch (c) {
     case '\r':
-      editorInsertNewLine();
+      if (wantToQuit == 0) {
+        editorInsertNewLine();
+      } else {
+        editorSetStatusMessage("");
+      }
       break;
 
-    case CTRL_KEY('q'):
-      if (E.dirty && quit_times > 0) {
-        editorSetStatusMessage("WARNING!!! File has unsaved changes. "
-            "Press CTRL-Q %d more times to quit.", quit_times);
-        quit_times--;
+    case CTRL_KEY('c'):
+      if (E.dirty) {
+        editorSetStatusMessage("WARNING: Unsaved changes. Exit anyway? [y/N]");
+        wantToQuit = 1;
         return;
       }
-      write(STDOUT_FILENO, "\x1b[2J", 4);
-      write(STDOUT_FILENO, "\x1b[H", 3);
-      exit(0);
+      exitEditor();
+      break;
+
+    // Special cases if the user want to quit
+    // TODO: Make a "question mode" with a callback for y and n
+    case 'y':
+      if (wantToQuit == 0) {
+        editorInsertChar(c);
+      } else {
+        exitEditor();
+      }
       break;
 
     case CTRL_KEY('s'):
@@ -162,9 +171,14 @@ void editorProcessKeypress() {
       break;
 
     default:
-      editorInsertChar(c);
+      if (wantToQuit == 1) {
+        wantToQuit = 0;
+        editorSetStatusMessage("");
+      } else {
+        editorInsertChar(c);
+      }
       break;
   }
 
-  quit_times = FN_QUIT_TIMES;
+  wantToQuit = 0;
 }