/*
* This file is part of DisOrder.
* Copyright (C) 2004, 2007, 2008 Richard Kettlewell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
/** @file lib/inputline.c
* @brief Line input
*/
#include "common.h"
#include
#include "log.h"
#include "mem.h"
#include "vector.h"
#include "charset.h"
#include "inputline.h"
/** @brief Read a line from @p fp
* @param tag Used in error messages
* @param fp Stream to read from
* @param lp Where to store newly allocated string
* @param newline Newline character or @ref CRLF
* @return 0 on success, -1 on error or eof.
*
* The newline is not included in the string. If the last line of a
* stream does not have a newline then that line is still returned.
*
* If @p newline is @ref CRLF then the line is terminated by CR LF,
* not by a single newline character. The CRLF is still not included
* in the string in this case.
*
* @p *lp is only set if the return value was 0.
*/
int inputline(const char *tag, FILE *fp, char **lp, int newline) {
struct dynstr d;
int ch;
dynstr_init(&d);
while((ch = getc(fp)),
(!ferror(fp) && !feof(fp) && ch != newline)) {
dynstr_append(&d, ch);
if(newline == CRLF && d.nvec >= 2
&& d.vec[d.nvec - 2] == 0x0D && d.vec[d.nvec - 1] == 0x0A) {
d.nvec -= 2;
break;
}
}
if(ferror(fp)) {
error(errno, "error reading %s", tag);
return -1;
} else if(feof(fp)) {
if(d.nvec != 0)
error(0, "error reading %s: unexpected EOF", tag);
return -1;
}
dynstr_terminate(&d);
*lp = d.vec;
return 0;
}
/*
Local Variables:
c-basic-offset:2
comment-column:40
End:
*/