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Upgrade to libedit-2.9

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BitKeeper/deleted/.del-readline.h~ac6080227e4b72fc:
  Delete: cmd-line-utils/libedit/readline/readline.h
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unknown
2005-04-21 12:06:46 +02:00
parent 7f0f4c5875
commit 948d88da93
42 changed files with 2857 additions and 1313 deletions
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169
cmd-line-utils/libedit/fgetln.c
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@ -1,109 +1,88 @@
/* $NetBSD: fgetln.c,v 1.2 2003/12/10 01:30:27 lukem Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#include <stdio.h>
#include "compat.h"
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#ifndef HAVE_FGETLN
#ifdef HAVE_GETLINE
extern int getline (char **lineptr, size_t *n, FILE *stream);
#else
/* The interface here is that of GNU libc's getline */
static int
getline (char **lineptr, size_t *n, FILE *stream)
char *
fgetln(FILE *fp, size_t *len)
{
#define EXPAND_CHUNK 16
static char *buf = NULL;
static size_t bufsiz = 0;
char *ptr;
int n_read = 0;
char *line = *lineptr;
if (lineptr == NULL) return -1;
if (n == NULL) return -1;
if (stream == NULL) return -1;
if (*lineptr == NULL || *n == 0) return -1;
#ifdef HAVE_FLOCKFILE
flockfile (stream);
#endif
while (1)
{
int c;
#ifdef HAVE_FLOCKFILE
c = getc_unlocked (stream);
#else
c = getc (stream);
#endif
if (buf == NULL) {
bufsiz = BUFSIZ;
if ((buf = malloc(bufsiz)) == NULL)
return NULL;
}
if (c == EOF)
{
if (n_read > 0)
line[n_read] = '\0';
break;
}
if (fgets(buf, bufsiz, fp) == NULL)
return NULL;
*len = 0;
if (n_read + 2 >= *n)
{
size_t new_size;
while ((ptr = strchr(&buf[*len], '\n')) == NULL) {
size_t nbufsiz = bufsiz + BUFSIZ;
char *nbuf = realloc(buf, nbufsiz);
if (*n == 0)
new_size = 16;
else
new_size = *n * 2;
if (nbuf == NULL) {
int oerrno = errno;
free(buf);
errno = oerrno;
buf = NULL;
return NULL;
} else
buf = nbuf;
if (*n >= new_size) /* Overflowed size_t */
line = NULL;
else
line = (char *) (*lineptr ? (char*) realloc(*lineptr, new_size) :
(char*) malloc(new_size));
*len = bufsiz;
if (fgets(&buf[bufsiz], BUFSIZ, fp) == NULL)
return buf;
if (line)
{
*lineptr = line;
*n = new_size;
}
else
{
if (*n > 0)
{
(*lineptr)[*n - 1] = '\0';
n_read = *n - 2;
}
break;
}
}
bufsiz = nbufsiz;
}
line[n_read] = c;
n_read++;
if (c == '\n')
{
line[n_read] = '\0';
break;
}
}
#ifdef HAVE_FLOCKFILE
funlockfile (stream);
#endif
return n_read - 1;
*len = (ptr - buf) + 1;
return buf;
}
#endif /* ! HAVE_GETLINE */
char *fgetln(FILE *stream, size_t *len)
{
char *ptr = NULL;
int sz;
size_t length= 0;
sz = getline(&ptr, &length, stream);
if(len) {
*len = sz;
}
return sz >= 0 ? ptr : NULL;
}
#endif