On 5/25/2013 2:51 PM, Walter Bright wrote:
On 5/25/2013 12:51 PM, Joakim wrote:
For a multi-language string encoding, the header would
contain a single byte for every language used in the string, along with multiple
index bytes to signify the start and finish of every run of single-language
characters in the string. So, a list of languages and a list of pure
single-language substrings.
Please implement the simple C function strstr() with this simple scheme, and
post it here.
http://www.digitalmars.com/rtl/string.html#strstr
I'll go first. Here's a simple UTF-8 version in C. It's not the fastest way to
do it, but at least it is correct:
----------------------------------
char *strstr(const char *s1,const char *s2) {
size_t len1 = strlen(s1);
size_t len2 = strlen(s2);
if (!len2)
return (char *) s1;
char c2 = *s2;
while (len2 <= len1) {
if (c2 == *s1)
if (memcmp(s2,s1,len2) == 0)
return (char *) s1;
s1++;
len1--;
}
return NULL;
}
