diff options
Diffstat (limited to 'common/stringhelp.c')
| -rw-r--r-- | common/stringhelp.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/common/stringhelp.c b/common/stringhelp.c index 1049c78e2..9a2265258 100644 --- a/common/stringhelp.c +++ b/common/stringhelp.c @@ -161,6 +161,35 @@ ascii_memistr ( const void *buffer, size_t buflen, const char *sub ) } +/* This is a case-sensitive version of our memistr. I wonder why no + * standard function memstr exists but we better do not use the name + * memstr to avoid future conflicts. + */ +const char * +gnupg_memstr (const void *buffer, size_t buflen, const char *sub) +{ + const unsigned char *buf = buffer; + const unsigned char *t = (const unsigned char *)buf; + const unsigned char *s = (const unsigned char *)sub; + size_t n = buflen; + + for ( ; n ; t++, n-- ) + { + if (*t == *s) + { + for (buf = t++, buflen = n--, s++; n && *t ==*s; t++, s++, n--) + ; + if (!*s) + return (const char*)buf; + t = (const unsigned char *)buf; + s = (const unsigned char *)sub ; + n = buflen; + } + } + return NULL; +} + + /* This function is similar to strncpy(). However it won't copy more * than N - 1 characters and makes sure that a '\0' is appended. With * N given as 0, nothing will happen. With DEST given as NULL, memory @@ -696,7 +725,7 @@ compare_filenames (const char *a, const char *b) /* Convert a base-10 number in STRING into a 64 bit unsigned int * value. Leading white spaces are skipped but no error checking is - * done. Thus it is similar to atoi(). */ + * done. Thus it is similar to atoi(). See also scan_secondsstr. */ uint64_t string_to_u64 (const char *string) { |