/* * Copyright (c) 1983, 1985, 1991 Peter J. Nicklin. * Copyright (c) 1991 Version Technology. * All Rights Reserved. * * $License: VT.1.1 $ * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: (1) Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. (2) Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. (3) All advertising materials mentioning * features or use of this software must display the following * acknowledgement: ``This product includes software developed by * Version Technology.'' Neither the name of Version Technology nor * the name of Peter J. Nicklin may be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY VERSION TECHNOLOGY ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL VERSION TECHNOLOGY BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * Report problems and direct questions to nicklin@netcom.com * * $Header: iolin.c,v 4.2 91/11/25 19:44:59 nicklin Exp $ * * Author: Peter J. Nicklin */ #include <stdio.h> #include "yesno.h" char IOBUF[BUFSIZ]; /* I/O line buffer */ short CONTINUE; /* does the line continue? */ /* * getlin() stores a line from input stream in IOBUF. The string is terminated * by a newline character which is replaced by a null character. getlin() * returns IOBUF, or null pointer upon end of file. */ char * getlin(stream) register FILE *stream; /* input stream */ { register int c; /* current character */ register char *iop; /* IOBUF pointer */ iop = IOBUF; while ((c = getc(stream)) != '\n' && c != EOF) *iop++ = c; if (c == EOF && iop == IOBUF) return(NULL); if (iop != IOBUF && iop[-1] == '\\') { iop[-1] = '\0'; CONTINUE = YES; } else { iop[0] = '\0'; CONTINUE = NO; } return(IOBUF); } /* * purgcontinue() eats up continuation lines from an input stream. */ void purgcontinue(stream) register FILE *stream; /* input stream */ { register int c; /* current character */ register int lastc; /* previous character */ if (CONTINUE == YES) { for (;;) { while ((c = getc(stream)) != '\n' && c != EOF) lastc = c; if (c == EOF || (c == '\n' && lastc != '\\')) break; } CONTINUE = NO; } } /* * putlin() writes IOBUF to stream and appends a newline character. If * IOBUF holds a CONTINUE line, a `\' precedes the newline. */ void putlin(stream) register FILE *stream; /* output stream */ { register int c; /* current character */ register char *iop; /* IOBUF pointer */ iop = IOBUF; while (c = *iop++) putc(c, stream); if (CONTINUE == YES) putc('\\', stream); putc('\n', stream); }