From 2bc1e7ecba1fcd73112d5e6703bdc28fb4da530a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Fri, 19 Apr 2013 09:08:45 +1000 Subject: utf8.c: add utf8_strnwidth() with the ability to skip ansi sequences MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- utf8.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) (limited to 'utf8.c') diff --git a/utf8.c b/utf8.c index 6ed93c317d..e7ba33c235 100644 --- a/utf8.c +++ b/utf8.c @@ -266,18 +266,26 @@ int utf8_width(const char **start, size_t *remainder_p) * string, assuming that the string is utf8. Returns strlen() instead * if the string does not look like a valid utf8 string. */ -int utf8_strwidth(const char *string) +int utf8_strnwidth(const char *string, int len, int skip_ansi) { int width = 0; const char *orig = string; - while (1) { - if (!string) - return strlen(orig); - if (!*string) - return width; + if (len == -1) + len = strlen(string); + while (string && string < orig + len) { + int skip; + while (skip_ansi && + (skip = display_mode_esc_sequence_len(string)) != 0) + string += skip; width += utf8_width(&string, NULL); } + return string ? width : len; +} + +int utf8_strwidth(const char *string) +{ + return utf8_strnwidth(string, -1, 0); } int is_utf8(const char *text) -- cgit v1.2.3