bore

commit 7d182ecb46ac967d16633dfaafb1909e30dcb91c
parent 353e8f211d5e6cc1afab847120b2b20ca626197b
Author: phoebos <ben@bvnf.space>
Date:   Fri, 24 Sep 2021 00:16:11 +0100

ed: add 'd'

Diffstat:
M
ed.c
 | 
25
+++++++++++++++++++++++--

1 file changed, 23 insertions(+), 2 deletions(-)
diff --git a/ed.c b/ed.c
@@ -187,6 +187,17 @@ input_fail:
 }
 
 int
+delete_line(int lineno) {
+    struct line *l = find_line(lineno);
+    if (l == NULL)
+        return 1;
+    l->prev->next = l->next;
+    l->next->prev = l->prev;
+    free(l);
+    return 0;
+}
+
+int
 ed(char *startfile) {
     if (startfile) 
         if (read_buf(startfile) != 0)
@@ -235,16 +246,26 @@ ed(char *startfile) {
                     cur_line = num_lines;
                 break;
             case 'i':
-                if (input(cur_line) != 0)
+                if (input(cur_line) != 0) {
+                    printf("?\n");
                     continue;
+                }
                 break;
             case 'a':
-                if (input(cur_line+1) != 0)
+                if (input(cur_line+1) != 0) {
+                    printf("?\n");
                     continue;
+                }
                 break;
             case 'p':
                 printf("%s", find_line(cur_line)->s);
                 break;
+            case 'd':
+                if (delete_line(cur_line) != 0) {
+                    printf("?\n");
+                    continue;
+                }
+                break;
             case 'w':
                 if (startfile) {
                     if (write_buf(startfile) != 0)