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Improve efficiency of m_3cat() algorithm 

Use exact memcpy() instead of repeated strcat().
This commit is contained in:
Kevin Easton 2019-12-28 17:30:01 +11:00
parent 4f63d48929
commit eaf6456854
1 changed files with 10 additions and 10 deletions
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20
source/ircaux.c
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@ -274,27 +274,27 @@ char *BX_m_s3cat_s (char **one, const char *maybe, const char *ifthere)
char *BX_m_3cat(char **one, const char *two, const char *three)
{
int len = 0;
size_t one_len = 0, two_len = 0, three_len = 0;
char *str;
if (*one)
len = strlen(*one);
one_len = strlen(*one);
if (two)
len += strlen(two);
two_len = strlen(two);
if (three)
len += strlen(three);
len += 1;
three_len = strlen(three);
str = (char *)new_malloc(len);
str = new_malloc(one_len + two_len + three_len + 1);
if (*one)
strcpy(str, *one);
memcpy(str, *one, one_len);
if (two)
strcat(str, two);
memcpy(str + one_len, two, two_len);
if (three)
strcat(str, three);
memcpy(str + one_len + two_len, three, three_len);
str[one_len + two_len + three_len] = 0;
new_free(one);
return ((*one = str));
return (*one = str);
}
/* upper()