From 5462f34ed037111d2d57638352b2f1a65a322579 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Thu, 23 Dec 2010 16:16:01 +0100 Subject: string_util: add function strchug_fast() Replace g_strchug() calls with a cheaper implementation. --- src/string_util.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'src/string_util.h') diff --git a/src/string_util.h b/src/string_util.h index df8ceeef..37235472 100644 --- a/src/string_util.h +++ b/src/string_util.h @@ -20,8 +20,49 @@ #ifndef MPD_STRING_UTIL_H #define MPD_STRING_UTIL_H +#include + #include +/** + * Remove the "const" attribute from a string pointer. This is a + * dirty hack, don't use it unless you know what you're doing! + */ +G_GNUC_CONST +static inline char * +deconst_string(const char *p) +{ + union { + const char *in; + char *out; + } u = { + .in = p, + }; + + return u.out; +} + +/** + * Returns a pointer to the first non-whitespace character in the + * string, or to the end of the string. + * + * This is a faster version of g_strchug(), because it does not move + * data. + */ +G_GNUC_PURE +const char * +strchug_fast_c(const char *p); + +/** + * Same as strchug_fast_c(), but works with a writable pointer. + */ +G_GNUC_PURE +static inline char * +strchug_fast(char *p) +{ + return deconst_string(strchug_fast_c(p)); +} + /** * Checks whether a string array contains the specified string. * -- cgit v1.2.3