Fully fonctional editing

src/input.c

@@ -1,13 +1,58 @@
 #include "../include/input.h"
 #include "../include/editor_op.h"
 #include "../include/file_io.h"
+#include "../include/output.h"
+#include <ctype.h>
 #include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/**
+ * \fn char * editorPrompt(struct editorConfig *E, char *prompt)
+ * \brief Return user input in a prompt when enter is hit. */
+
+char *editorPrompt(struct editorConfig *E, char *prompt) {
+  size_t buf_size = 128;
+  char *buf = malloc(buf_size);
+  size_t buf_len = 0;
+  int c = 0;
+  buf[0] = '\0';
+
+  while (1) {
+    editorSetStatusMessage(E, prompt, buf);
+    editorRefreshScreen(E);
+    c = editorReadKey();
+    if (c == DEL_KEY || c == CTRL_KEY('h') || c == BACKSPACE) {
+      if (buf_len != 0) {
+        buf[--buf_len] = '\0';
+      }
+    } else if (c == ESCAPE) {
+      fprintf(stderr, "escape");
+      editorSetStatusMessage(E, "");
+      free(buf);
+      return NULL;
+    } else if (c == '\r') {
+      if (buf_len != 0) {
+        editorSetStatusMessage(E, "");
+        return buf;
+      }
+    } else if (!iscntrl(c) && c < 128) {
+      if (buf_len == buf_size - 1) {
+        buf_size *= 2;
+        buf = realloc(buf, buf_size);
+      }
+      buf[buf_len++] = c;
+      buf[buf_len] = '\0';
+    }
+  }
+}
 
 void editorMoveCursor(struct editorConfig *E, int key) {
   erow *row = (E->cursor_y >= E->numrows) ? NULL : &E->row[E->cursor_y];
   int row_len;
   switch (key) {
-  case CURSOR_RIGHT:
+  case ARROW_RIGHT:
     if (row && E->cursor_x < row->size) {
       ++E->cursor_x;
     } else if (row && E->cursor_x == row->size) {
@@ -15,17 +60,17 @@ void editorMoveCursor(struct editorConfig *E, int key) {
       E->cursor_x = 0;
     }
     break;
-  case CURSOR_DOWN:
+  case ARROW_DOWN:
     if (E->cursor_y < E->numrows) {
       ++E->cursor_y;
     }
     break;
-  case CURSOR_UP:
+  case ARROW_UP:
     if (E->cursor_y != 0) {
       --E->cursor_y;
     }
     break;
-  case CURSOR_LEFT:
+  case ARROW_LEFT:
     if (E->cursor_x != 0) {
       --E->cursor_x;
     } else if (E->cursor_y > 0) {
@@ -43,14 +88,23 @@ void editorMoveCursor(struct editorConfig *E, int key) {
 }
 
 void editorProcessKeypress(struct editorConfig *E) {
+  static int quit_times = QUIT_TIMES;
   int c = editorReadKey();
   int times;
 
   switch (c) {
+
   case '\r':
-    /* TODO */
+    editorInsertNewLine(E);
     break;
   case CTRL_KEY('q'):
+    if (E->dirty && quit_times > 0) {
+      editorSetStatusMessage(E,
+                             "WARNING! Changes hasn't been saved. Press Ctrl-Q "
+                             "another time to quit.");
+      --quit_times;
+      return;
+    }
     write(STDOUT_FILENO, "\x1b[2J", 4);
     write(STDOUT_FILENO, CURSOR_TOP_LEFT, 3);
     disableRawMode(E);
@@ -73,8 +127,11 @@ void editorProcessKeypress(struct editorConfig *E) {
 
   case BACKSPACE:
   case CTRL_KEY('h'):
-    // case DEL_KEY:
-    /* TODO */
+  case DEL_KEY:
+    if (c == DEL_KEY) {
+      editorMoveCursor(E, ARROW_RIGHT);
+    }
+    editorDelChar(E);
     break;
 
   case PAGE_UP:
@@ -89,14 +146,14 @@ void editorProcessKeypress(struct editorConfig *E) {
     }
     times = E->screenrows;
     while (--times) {
-      editorMoveCursor(E, c == PAGE_UP ? CURSOR_UP : CURSOR_DOWN);
+      editorMoveCursor(E, c == PAGE_UP ? ARROW_UP : ARROW_DOWN);
     }
   } break;
 
-  case CURSOR_UP:
-  case CURSOR_DOWN:
-  case CURSOR_LEFT:
-  case CURSOR_RIGHT:
+  case ARROW_UP:
+  case ARROW_DOWN:
+  case ARROW_LEFT:
+  case ARROW_RIGHT:
     editorMoveCursor(E, c);
     break;
 
@@ -107,4 +164,5 @@ void editorProcessKeypress(struct editorConfig *E) {
     editorInsertChar(E, c);
     break;
   }
+  quit_times = QUIT_TIMES;
 }