Changeset 4466e3e for lib/misc.c

Timestamp:

2016-10-17T04:34:11Z (8 years ago)

Author:

dequis <dx@…>

Branches:

master

Children:

f95e606

Parents:

399d65a

Message:

misc: Add str_pad_and_truncate() helper function

Useful for tables. See following commit.

File:

• lib/misc.c (modified) (1 diff)

lib/misc.c

@@ -787 +787 @@
         return string;
 }
+
+/* Returns a string that is exactly 'char_len' utf8 characters long (not bytes),
+ * padded to the right with spaces or truncated with the 'ellipsis' parameter
+ * if specified (can be NULL).
+ * Returns a newly allocated string, or NULL on invalid parameters. */
+char *str_pad_and_truncate(const char *string, long char_len, const char *ellipsis)
+{
+        size_t string_len = strlen(string);
+        size_t ellipsis_len = (ellipsis) ? strlen(ellipsis) : 0;
+        long orig_len = g_utf8_strlen(string, -1);
+
+        g_return_val_if_fail(char_len > ellipsis_len, NULL);
+
+        if (orig_len > char_len) {
+                char *ret = g_malloc(string_len + 1);
+                g_utf8_strncpy(ret, string, char_len - ellipsis_len);
+                if (ellipsis) {
+                        g_strlcat(ret, ellipsis, string_len);
+                }
+                return ret;
+        } else if (orig_len < char_len) {
+                return g_strdup_printf("%s%*s", string, (int) (char_len - orig_len), "");
+        } else {
+                return g_strdup(string);
+        }
+}