From: "Akashi, Takahiro" takahiro.akashi@linaro.org
Add u16_strcpy() and u16_strdup(). The latter function will be used later in implementing efi HII database protocol.
Signed-off-by: Akashi Takahiro takahiro.akashi@linaro.org --- include/charset.h | 23 +++++++++++++++++++++++ lib/charset.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+)
diff --git a/include/charset.h b/include/charset.h index 4d45e246e515..65087f76d1fc 100644 --- a/include/charset.h +++ b/include/charset.h @@ -191,6 +191,29 @@ size_t u16_strlen(const u16 *in); */ size_t u16_strnlen(const u16 *in, size_t count);
+/** + * u16_strcpy() - copy u16 string + * + * Copy u16 string pointed to by src, including terminating null word, to + * the buffer pointed to by dest. + * + * @dest: destination buffer + * @src: source buffer (null terminated) + * Return: 'dest' address + */ +u16 *u16_strcpy(u16 *dest, const u16 *src); + +/** + * u16_strdup() - duplicate u16 string + * + * Copy u16 string pointed to by src, including terminating null word, to a + * newly allocated buffer. + * + * @src: source buffer (null terminated) + * Return: allocated new buffer on success, NULL on failure + */ +u16 *u16_strdup(const u16 *src); + /** * utf16_to_utf8() - Convert an utf16 string to utf8 * diff --git a/lib/charset.c b/lib/charset.c index 10557b9e753d..5e349ed5ee45 100644 --- a/lib/charset.c +++ b/lib/charset.c @@ -349,6 +349,35 @@ size_t u16_strnlen(const u16 *in, size_t count) return i; }
+u16 *u16_strcpy(u16 *dest, const u16 *src) +{ + u16 *tmp = dest; + + for (;; dest++, src++) { + *dest = *src; + if (!*src) + break; + } + + return tmp; +} + +u16 *u16_strdup(const u16 *src) +{ + u16 *new; + + if (!src) + return NULL; + + new = malloc((u16_strlen(src) + 1) * sizeof(u16)); + if (!new) + return NULL; + + u16_strcpy(new, src); + + return new; +} + /* Convert UTF-16 to UTF-8. */ uint8_t *utf16_to_utf8(uint8_t *dest, const uint16_t *src, size_t size) {