Mercurial > gnulib
view lib/linebuffer.c @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 19 Mar 2013 09:08:47 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
line wrap: on
line source
/* linebuffer.c -- read arbitrarily long lines Copyright (C) 1986, 1991, 1998-1999, 2001, 2003-2004, 2006-2007, 2009-2013 Free Software Foundation, Inc. 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 <http://www.gnu.org/licenses/>. */ /* Written by Richard Stallman. */ #include <config.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include "linebuffer.h" #include "xalloc.h" #if USE_UNLOCKED_IO # include "unlocked-io.h" #endif /* Initialize linebuffer LINEBUFFER for use. */ void initbuffer (struct linebuffer *linebuffer) { memset (linebuffer, 0, sizeof *linebuffer); } struct linebuffer * readlinebuffer (struct linebuffer *linebuffer, FILE *stream) { return readlinebuffer_delim (linebuffer, stream, '\n'); } /* Read an arbitrarily long line of text from STREAM into LINEBUFFER. Consider lines to be terminated by DELIMITER. Keep the delimiter; append DELIMITER if it's the last line of a file that ends in a character other than DELIMITER. Do not NUL-terminate. Therefore the stream can contain NUL bytes, and the length (including the delimiter) is returned in linebuffer->length. Return NULL when stream is empty. Return NULL and set errno upon error; callers can distinguish this case from the empty case by invoking ferror (stream). Otherwise, return LINEBUFFER. */ struct linebuffer * readlinebuffer_delim (struct linebuffer *linebuffer, FILE *stream, char delimiter) { int c; char *buffer = linebuffer->buffer; char *p = linebuffer->buffer; char *end = buffer + linebuffer->size; /* Sentinel. */ if (feof (stream)) return NULL; do { c = getc (stream); if (c == EOF) { if (p == buffer || ferror (stream)) return NULL; if (p[-1] == delimiter) break; c = delimiter; } if (p == end) { size_t oldsize = linebuffer->size; buffer = x2realloc (buffer, &linebuffer->size); p = buffer + oldsize; linebuffer->buffer = buffer; end = buffer + linebuffer->size; } *p++ = c; } while (c != delimiter); linebuffer->length = p - buffer; return linebuffer; } /* Free the buffer that was allocated for linebuffer LINEBUFFER. */ void freebuffer (struct linebuffer *linebuffer) { free (linebuffer->buffer); }