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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
#include "stdhdr.h"
ssize_t
getdelim(char** sp, size_t* np, int delim, Sfio_t* f)
{
ssize_t m;
ssize_t n;
ssize_t k;
ssize_t p;
uchar* s;
uchar* ps;
SFMTXDECL(f);
STDIO_INT(f, "getdelim", ssize_t, (char**, size_t*, int, Sfio_t*), (sp, np, delim, f))
SFMTXENTER(f, -1);
if(delim < 0 || delim > 255 || !sp || !np) /* bad parameters */
SFMTXRETURN(f, -1);
if(f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0)
SFMTXRETURN(f, -1);
SFLOCK(f,0);
if(!(s = (uchar*)(*sp)) || (n = *np) < 0)
{ s = NIL(uchar*); n = 0; }
for(m = 0;; )
{ /* read new data */
if((p = f->endb - (ps = f->next)) <= 0 )
{ f->getr = delim;
f->mode |= SF_RC;
if(SFRPEEK(f,ps,p) <= 0)
{ m = -1;
break;
}
}
for(k = 0; k < p; ++k) /* find the delimiter */
{ if(ps[k] == delim)
{ k += 1; /* include delim in copying */
break;
}
}
if((m+k+1) >= n ) /* make sure there is space */
{ n = ((m+k+15)/8)*8;
if(!(s = (uchar*)realloc(s, n)) )
{ *sp = 0; *np = 0;
m = -1;
break;
}
*sp = (char*)s; *np = n;
}
memcpy(s+m, ps, k); m += k;
f->next = ps+k; /* skip copied data in buffer */
if(s[m-1] == delim)
{ s[m] = 0; /* 0-terminated */
break;
}
}
SFOPEN(f,0);
SFMTXRETURN(f,m);
}
ssize_t
__getdelim(char** sp, size_t* np, int delim, Sfio_t* f)
{
return getdelim(sp, np, delim, f);
}
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