[SR-Users] Comparing strings

[Alex Balashov]

Is there any compelling reason to use textops' cmp_str()/cmp_istr()
versus the 'eq' operator (or the implicit string comparison in "a" == "b")?

[AliReza Khoshgoftar Monfared]

Here is the definition for cmp_str(), for example:

static int cmp_str_f(struct sip_msg *msg, char *str1, char *str2 )

{
str s1;
str s2;
int ret;
if(fixup_get_svalue(msg, (gparam_p)str1, &s1)!=0)
{
LM_ERR("cannot get first parameter\n");
return -8;
}
if(fixup_get_svalue(msg, (gparam_p)str2, &s2)!=0)
{
LM_ERR("cannot get second parameter\n");
return -8;
}
ret = cmp_str(&s1, &s2);
if(ret==0)
return 1;
if(ret>0)
return -1;
return -2;
}

i guess rather than the ability to use error codes, and the fact that one
function does case sensitive and the other case insensitive, there's no
tangible difference with ==

str