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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 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 Research
*
* escape optget() special chars in s and write to sp
* esc == '?' or ':' also escaped
*/
#include <optlib.h>
#include <ctype.h>
int
optesc(Sfio_t* sp, register const char* s, int esc)
{
register const char* m;
register int c;
if (*s == '[' && *(s + 1) == '+' && *(s + 2) == '?')
{
c = strlen(s);
if (s[c - 1] == ']')
{
sfprintf(sp, "%-.*s", c - 4, s + 3);
return 0;
}
}
if (esc != '?' && esc != ':')
esc = 0;
while (c = *s++)
{
if (isalnum(c))
{
for (m = s - 1; isalnum(*s); s++);
if (isalpha(c) && *s == '(' && isdigit(*(s + 1)) && *(s + 2) == ')')
{
sfputc(sp, '\b');
sfwrite(sp, m, s - m);
sfputc(sp, '\b');
sfwrite(sp, s, 3);
s += 3;
}
else
sfwrite(sp, m, s - m);
}
else if (c == '-' && *s == '-' || c == '<')
{
m = s - 1;
if (c == '-')
s++;
else if (*s == '/')
s++;
while (isalnum(*s))
s++;
if (c == '<' && *s == '>' || isspace(*s) || *s == 0 || *s == '=' || *s == ':' || *s == ';' || *s == '.' || *s == ',')
{
sfputc(sp, '\b');
sfwrite(sp, m, s - m);
sfputc(sp, '\b');
}
else
sfwrite(sp, m, s - m);
}
else
{
if (c == ']' || c == esc)
sfputc(sp, c);
sfputc(sp, c);
}
}
return 0;
}
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