[sr-dev] git:master: core: added function to search a str inside a str

Module: sip-router Branch: master Commit: 8c2a2826f5f6954b4a38405fd04f128078e98e0f URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=8c2a282… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: Sat Mar 26 23:44:01 2011 +0100 core: added function to search a str inside a str - str_search(text, needle) added to return the position of str needle when it is found inside str text --- ut.c | 23 +++++++++++++++++++++++ ut.h | 4 ++++ 2 files changed, 27 insertions(+), 0 deletions(-) diff --git a/ut.c b/ut.c index b011fda..7dd7373 100644 --- a/ut.c +++ b/ut.c @@ -274,3 +274,26 @@ char* get_abs_pathname(str* base, str* file) } return res; } + + +/** + * @brief search for occurence of needle in text + * @return pointer to start of needle in text or NULL if the needle + * is not found + */ +char *str_search(str *text, str *needle) +{ + char *p; + + if(text==NULL || text->s==NULL || needle==NULL || needle->s==NULL + || text->len<needle->len) + return NULL; + + for (p = text->s; p <= text->s + text->len - needle->len; p++) { + if (*p == *needle->s && memcmp(p, needle->s, needle->len)==0) { + return p; + } + } + + return NULL; +} diff --git a/ut.h b/ut.h index 1e4b2b4..da40ebc 100644 --- a/ut.h +++ b/ut.h @@ -824,4 +824,8 @@ unsigned int get_sys_version(int* major, int* minor, int* minor2); */ char* get_abs_pathname(str* base, str* file); +/** + * search for needle in text + */ +char *str_search(str *text, str *needle); #endif