Add kmscon_char_set() helper

This helper allows to copy one char into another.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

diff --git a/src/console.h b/src/console.h
index b49c5b2..db0cf0a 100644 (file)
--- a/src/console.h
+++ b/src/console.h
@@ -28,6 +28,7 @@ int kmscon_char_new(struct kmscon_char **out);
 int kmscon_char_dup(struct kmscon_char **out, const struct kmscon_char *orig);
 void kmscon_char_free(struct kmscon_char *ch);
 
+int kmscon_char_set(struct kmscon_char *ch, const struct kmscon_char *orig);
 int kmscon_char_set_u8(struct kmscon_char *ch, const char *str, size_t len);
 const char *kmscon_char_get_u8(const struct kmscon_char *ch);
 size_t kmscon_char_get_len(const struct kmscon_char *ch);

diff --git a/src/console_char.c b/src/console_char.c
index 9a87df9..33d56f0 100644 (file)
--- a/src/console_char.c
+++ b/src/console_char.c
@@ -132,6 +132,27 @@ void kmscon_char_free(struct kmscon_char *ch)
        free(ch);
 }
 
+int kmscon_char_set(struct kmscon_char *ch, const struct kmscon_char *orig)
+{
+       char *buf;
+
+       if (!ch || !orig)
+               return -EINVAL;
+
+       if (ch->size < orig->len) {
+               buf = realloc(ch->buf, orig->len);
+               if (!buf)
+                       return -ENOMEM;
+               ch->buf = buf;
+               ch->size = orig->len;
+       }
+
+       memcpy(ch->buf, orig->buf, orig->len);
+       ch->len = orig->len;
+
+       return 0;
+}
+
 int kmscon_char_set_u8(struct kmscon_char *ch, const char *str, size_t len)
 {
        char *buf;