vecload.c revision 3e14f97f673e8a630f076077de35afdd43dc1587
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 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 *
* (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
*
* string vector load support
*/
#include <ast.h>
#include <vecargs.h>
/*
* load a string vector from lines in buf
* buf may be modified on return
*
* each line in buf is treated as a new vector element
* lines with # as first char are comments
* \ as the last char joins consecutive lines
*
* the vector ends with a 0 sentinel
*
* the string array pointer is returned
*/
char**
{
register char* s;
register int n;
register char** p;
char** vec;
vec = 0;
for (s = buf;; s++)
{
if (*s == '\n')
{
else
{
*s = 0;
if (*(s + 1) != '#')
{
n++;
if (!*(s + 1)) break;
}
}
}
else if (!*s)
{
n++;
break;
}
}
if (n < 0) n = 0;
if (p = newof(0, char*, n + 3, 0))
{
*p++ = s = buf;
vec = ++p;
if (n > 0) for (;;)
{
if (*s != '#')
{
*p++ = s;
if (--n <= 0) break;
}
while (*s) s++;
s++;
}
*p = 0;
*(vec - 1) = (char*)p;
}
return(vec);
}