chresc.c revision da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/***********************************************************************
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* This software is part of the ast package *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* and is licensed under the *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Common Public License, Version 1.0 *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* by AT&T Knowledge Ventures *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* A copy of the License is available at *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Information and Software Systems Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* AT&T Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Florham Park NJ *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Glenn Fowler <gsf@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* David Korn <dgk@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Phong Vo <kpv@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin***********************************************************************/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Glenn Fowler
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * AT&T Research
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * return the next character in the string s
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * \ character constants are converted
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * p is updated to point to the next character in s
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinchresc(register const char* s, char** p)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin register const char* q;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin register int c;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin const char* e;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin switch (c = mbchar(s))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin case '\\':
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin switch (c = *s++)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin q = s + 2;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while (s < q)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin switch (*s)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (c = *s)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin c ^= 0x40;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (*s == '[' && (n = regcollate(s + 1, (char**)&e, buf, sizeof(buf))) >= 0)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (n == 1)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (*s == '-')
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin q = c == 'u' ? (s + 4) : c == 'U' ? (s + 8) : (char*)0;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while (!e || !q || s < q)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin switch (*s)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (s != e)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *p = (char*)s;