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Code Issues Releases Wiki Activity

lib/string: Add standard strstr() function 

Adding implementation of standard library strstr()

See https://review.coreboot.org/c/coreboot/+/43741 for context.

Change-Id: I63e26e98ed2dd15542f81c0a3a5e353bb93b7350
Signed-off-by: jbk@chromium.org
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44085
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Jes Klinke 2020-07-31 09:58:49 -07:00 committed by Patrick Georgi
parent e968e3762e
commit 683ac6f204
2 changed files with 11 additions and 0 deletions
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1
src/include/string.h
View File

@ -29,6 +29,7 @@ int strcmp(const char *s1, const char *s2);
int strncmp(const char *s1, const char *s2, int maxlen);
int strspn(const char *str, const char *spn);
int strcspn(const char *str, const char *spn);
char *strstr(const char *haystack, const char *needle);
char *strtok_r(char *str, const char *delim, char **ptr);
char *strtok(char *str, const char *delim);
long atol(const char *str);

10
src/lib/string.c
View File

@ -163,6 +163,16 @@ int strcspn(const char *str, const char *spn)
return ret;
}
char *strstr(const char *haystack, const char *needle)
{
size_t needle_len = strlen(needle);
for (; *haystack; haystack++) {
if (!strncmp(haystack, needle, needle_len))
return (char *)haystack;
}
return NULL;
}
char *strtok_r(char *str, const char *delim, char **ptr)
{
char *start;