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Updated stristr() and stristr_full() to be a bit faster.

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git-svn-id: http://svn.irssi.org/repos/irssi/trunk@813 dbcabf3a-b0e7-0310-adc4-f8d773084564
This commit is contained in:
Timo Sirainen 2000-11-07 01:25:46 +00:00 committed by cras
parent 4301e04791
commit 6e27475e98
1 changed files with 34 additions and 14 deletions
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48
src/core/misc.c
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@ -301,19 +301,27 @@ GList *glist_find_icase_string(GList *list, const char *key)
char *stristr(const char *data, const char *key)
{
const char *pos, *max;
int keylen, datalen;
const char *max;
int keylen, datalen, pos;
keylen = strlen(key);
datalen = strlen(data);
if (keylen > datalen)
if (keylen > datalen || keylen == 0)
return NULL;
max = data+datalen-keylen;
for (pos = data; pos <= max; pos++) {
if (g_strncasecmp(pos, key, keylen) == 0)
return (char *) pos;
pos = 0;
while (data <= max) {
if (key[pos] == '\0')
return (char *) data;
if (toupper(data[pos]) == toupper(key[pos]))
pos++;
else {
data++;
pos = 0;
}
}
return NULL;
@ -325,22 +333,34 @@ char *stristr(const char *data, const char *key)
char *stristr_full(const char *data, const char *key)
{
const char *pos, *max;
int keylen, datalen;
const char *start, *max;
int keylen, datalen, pos;
keylen = strlen(key);
datalen = strlen(data);
if (keylen > datalen)
if (keylen > datalen || keylen == 0)
return NULL;
max = data+datalen-keylen;
for (pos = data; pos <= max; pos++) {
if (pos > data && !isbound(pos[-1])) continue;
start = data; pos = 0;
while (data <= max) {
if (key[pos] == '\0') {
if (data[pos] != '\0' && !isbound(data[pos])) {
data++;
pos = 0;
continue;
}
return (char *) data;
}
if (g_strncasecmp(pos, key, keylen) == 0 &&
(pos[keylen] == '\0' || isbound(pos[keylen])))
return (char *) pos;
if (toupper(data[pos]) == toupper(key[pos]) &&
(pos != 0 || data == start || isbound(data[-1])))
pos++;
else {
data++;
pos = 0;
}
}
return NULL;