65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
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/*
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* fileio.c
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* File reading utilities
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*
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* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "pkg.h"
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#include "bsdstubs.h"
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char *
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pkg_fgetline(char *line, size_t size, FILE *stream)
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{
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char *s = line;
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char *end = line + size - 1;
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int c = '\0', c2;
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if (s == NULL)
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return NULL;
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while (s < end && (c = getc(stream)) != EOF)
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{
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if (c == '\n')
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{
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*s++ = c;
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break;
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}
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else if (c == '\r')
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{
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*s++ = '\n';
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if ((c2 = getc(stream)) == '\n')
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break;
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ungetc(c2, stream);
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break;
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}
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else
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*s++ = c;
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}
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*s = '\0';
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if (c == EOF && (s == line || ferror(stream)))
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return NULL;
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return line;
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}
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