tmword.c revision 7c2fbfb345896881c631598ee3852ce9ce33fb07
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2008 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Bell Laboratories
*
* time conversion support
*/
#include <ast.h>
#include <tm.h>
#include <ctype.h>
/*
* match s against t ignoring case and .'s
*
* suf is an n element table of suffixes that may trail s
* if all isalpha() chars in s match then 1 is returned
* and if e is non-null it will point to the first unmatched
* char in s, otherwise 0 is returned
*/
int
tmword(register const char* s, char** e, register const char* t, char** suf, int n)
{
register int c;
const char* b;
if (*s && *t)
{
b = s;
while (c = *s++)
{
if (c != '.')
{
if (!isalpha(c) || c != *t && (islower(c) ? toupper(c) : tolower(c)) != *t)
break;
t++;
}
}
s--;
if (!isalpha(c))
{
if (c == '_')
s++;
if (e)
*e = (char*)s;
return s > b;
}
if (!*t && s > (b + 1))
{
b = s;
while (n-- && (t = *suf++))
{
s = b;
while (isalpha(c = *s++) && (c == *t || (islower(c) ? toupper(c) : tolower(c)) == *t)) t++;
if (!*t && !isalpha(c))
{
if (c != '_')
s--;
if (e)
*e = (char*)s;
return 1;
}
}
}
}
return 0;
}