stresc.c revision da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Knowledge Ventures *
* *
* A copy of the License is available at *
* (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 Research
*
* convert \X character constants in s in place
* the length of the converted s is returned (may have embedded \0's)
*/
#include <ast.h>
int
stresc(register char* s)
{
register char* t;
register unsigned int c;
char* b;
char* e;
b = t = s;
while (c = *s++)
{
if (c == '\\')
{
c = chresc(s - 1, &e);
s = e;
if (c > UCHAR_MAX)
{
t += wctomb(t, c);
continue;
}
}
*t++ = c;
}
*t = 0;
return t - b;
}