mirror of https://gitee.com/openkylin/attr.git
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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Copyright (C) 2009 Andreas Gruenbacher <agruen@suse.de>
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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#include <unistd.h>
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#include "misc.h"
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#define LINE_SIZE getpagesize()
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char *next_line(FILE *file)
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{
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static char *line;
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static size_t line_size;
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char *c;
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int eol = 0;
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if (!line) {
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if (high_water_alloc((void **)&line, &line_size, LINE_SIZE))
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return NULL;
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}
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c = line;
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do {
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if (!fgets(c, line_size - (c - line), file))
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return NULL;
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c = strrchr(c, '\0');
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while (c > line && (*(c-1) == '\n' || *(c-1) == '\r')) {
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c--;
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*c = '\0';
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eol = 1;
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}
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if (feof(file))
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break;
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if (!eol) {
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if (high_water_alloc((void **)&line, &line_size,
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2 * line_size))
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return NULL;
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c = strrchr(line, '\0');
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}
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} while (!eol);
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return line;
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}
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