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libmisc/next_line.c
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Mike Frysinger
licensing: clean up LGPL boilerplate for library code
13 янв 2024, 08:36
13 янв 2024, 08:36
c769e17
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/* Copyright (C) 2009 Andreas Gruenbacher <agruen@suse.de> This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, see <https://www.gnu.org/licenses/>. */ #include "config.h" #include <stdio.h> #include <string.h> #include <limits.h> #include <unistd.h> #include "misc.h" #define LINE_SIZE getpagesize() char *__acl_next_line(FILE *file) { static char *line; static size_t line_size; char *c; int eol = 0; if (!line) { if (__acl_high_water_alloc((void **)&line, &line_size, LINE_SIZE)) return NULL; } c = line; do { if (!fgets(c, line_size - (c - line), file)) return NULL; c = strrchr(c, '\0'); while (c > line && (*(c-1) == '\n' || *(c-1) == '\r')) { c--; *c = '\0'; eol = 1; } if (feof(file)) break; if (!eol) { if (__acl_high_water_alloc((void **)&line, &line_size, 2 * line_size)) return NULL; c = strrchr(line, '\0'); } } while (!eol); return line; }