diff options
Diffstat (limited to 'src/core/wee-utf8.c')
| -rw-r--r-- | src/core/wee-utf8.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/core/wee-utf8.c b/src/core/wee-utf8.c index d61261f33..0360b43b4 100644 --- a/src/core/wee-utf8.c +++ b/src/core/wee-utf8.c @@ -471,6 +471,35 @@ utf8_charcasecmp (const char *string1, const char *string2) } /* + * utf8_charcasecmp_range: compare two utf8 chars, case is ignored + * using a range, examples: + * - range = 26: A-Z ==> a-z + * - range = 29: A-Z [ \ ] ==> a-z { | } + * - range = 30: A-Z [ \ ] ^ ==> a-z { | } ~ + * (ranges 29 and 30 are used by some protocols like + * IRC) + */ + +int +utf8_charcasecmp_range (const char *string1, const char *string2, int range) +{ + wint_t wchar1, wchar2; + + if (!string1 || !string2) + return (string1) ? 1 : ((string2) ? -1 : 0); + + wchar1 = utf8_wide_char (string1); + if ((wchar1 >= 'A') && (wchar1 < 'A' + (unsigned int)range)) + wchar1 += ('a' - 'A'); + + wchar2 = utf8_wide_char (string2); + if ((wchar2 >= 'A') && (wchar2 < 'A' + (unsigned int)range)) + wchar2 += ('a' - 'A'); + + return (wchar1 < wchar2) ? -1 : ((wchar1 == wchar2) ? 0 : 1); +} + +/* * utf8_char_size_screen: return number of chars needed on screen to display * UTF-8 char */ |