diary

commit 1165944b85015174e256c55149a115a20fd16b44
parent 9e77f9028ee159cbe74a618499c8ee194ef9f150
Author: Andreas Gruhler <andreas.gruhler@adfinis.com>
Date:   Sun,  8 Sep 2024 01:17:49 +0200

fix(103-folding): make room for cr

Diffstat:
M
src/utils.c
 | 
17
+++++++++++++----

1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/src/utils.c b/src/utils.c
@@ -102,12 +102,21 @@ char* fold(const char* str) {
         }
         buf = (char*) newbuf;
 
-        if ((bufl > 1) && ((bufl % 77) == 0)) {
-            // break lines after 75 chars
+        // break lines after 75 chars
+        if ((bufl > 2) && ((bufl % 77) == 0)) {
+            // make room for the cr (\r) below
+            newbuf = realloc(buf, ++bufl);
+            if (newbuf == NULL) {
+                perror("realloc failed");
+                free(buf);
+                return NULL;
+            }
+            buf = (char*) newbuf;
+
             // split between any two characters by inserting a CRLF
             // immediately followed by a white space character
-            buf[bufl-2] = '\r';
-            buf[bufl-1] = '\n';
+            buf[bufl-3] = '\r';
+            buf[bufl-2] = '\n';
             escch = ' ';
             esc = true;
             continue;