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git://git.code.sf.net/p/cdesktopenv/code
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86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1985-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2021 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* Glenn Fowler <gsf@research.att.com> *
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* David Korn <dgk@research.att.com> *
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* Phong Vo <kpv@research.att.com> *
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* *
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***********************************************************************/
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#pragma prototyped
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/*
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* standalone mini ast+sfio implementation
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*/
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#include <ast.h>
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#define CHUNK 1024
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_Ast_info_t ast;
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int
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astwinsize(int fd, int* lines, int* columns)
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{
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if (lines)
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*lines = 24;
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if (columns)
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*columns = 80;
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return 0;
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}
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char*
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sfgetr(Sfio_t* sp, int c, int z)
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{
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register char* s;
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register char* e;
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static char* buf;
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static unsigned long siz;
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if (!buf)
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{
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siz = CHUNK;
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if (!(buf = newof(0, char, siz, 0)))
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return 0;
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}
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if (z < 0)
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return *buf ? buf : (char*)0;
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s = buf;
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e = s + siz;
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for (;;)
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{
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if (s >= e)
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{
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siz += CHUNK;
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if (!(buf = newof(buf, char, siz, 0)))
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return 0;
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s = buf + (siz - CHUNK);
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e = s + siz;
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}
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if ((c = sfgetc(sp)) == EOF)
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{
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*s = 0;
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return 0;
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}
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if (c == '\n')
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{
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*s = z ? 0 : c;
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break;
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}
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*s++ = c;
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}
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return buf;
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}
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