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Upgrade bundled readline to version 5.0.

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This commit is contained in:
jimw@mysql.com
2005-07-18 17:22:38 -07:00
parent 086c3206f0
commit 7cf58d1f86
46 changed files with 1841 additions and 728 deletions
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137
cmd-line-utils/readline/histfile.c
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@ -1,6 +1,6 @@
/* histfile.c - functions to manipulate the history file. */
/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
/* Copyright (C) 1989-2003 Free Software Foundation, Inc.
This file contains the GNU History Library (the Library), a set of
routines for managing the text of previously typed lines.
@ -23,14 +23,21 @@
/* The goal is to make the implementation transparent, so that you
don't have to know what data types are used, just what functions
you can call. I think I have done that. */
#define READLINE_LIBRARY
#include "config_readline.h"
#if defined (__TANDEM)
# include <floss.h>
#endif
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
#include <stdio.h>
#include <sys/types.h>
#ifndef _MINIX
#if ! defined (_MINIX) && defined (HAVE_SYS_FILE_H)
# include <sys/file.h>
#endif
#include "posixstat.h"
@ -50,7 +57,7 @@
# undef HAVE_MMAP
#endif
#ifdef HAVE_MMAP
#ifdef HISTORY_USE_MMAP
# include <sys/mman.h>
# ifdef MAP_FILE
@ -65,7 +72,7 @@
# define MAP_FAILED ((void *)-1)
# endif
#endif /* HAVE_MMAP */
#endif /* HISTORY_USE_MMAP */
/* If we're compiling for __EMX__ (OS/2) or __CYGWIN__ (cygwin32 environment
on win 95/98/nt), we want to open files with O_BINARY mode so that there
@ -91,6 +98,13 @@ extern int errno;
#include "rlshell.h"
#include "xmalloc.h"
/* If non-zero, we write timestamps to the history file in history_do_write() */
int history_write_timestamps = 0;
/* Does S look like the beginning of a history timestamp entry? Placeholder
for more extensive tests. */
#define HIST_TIMESTAMP_START(s) (*(s) == history_comment_char)
/* Return the string that should be used in the place of this
filename. This only matters when you don't specify the
filename to read_history (), or write_history (). */
@ -149,13 +163,20 @@ read_history_range (filename, from, to)
const char *filename;
int from, to;
{
register char *line_start, *line_end;
char *input, *buffer, *bufend;
register char *line_start, *line_end, *p;
char *input, *buffer, *bufend, *last_ts;
int file, current_line, chars_read;
struct stat finfo;
size_t file_size;
#if defined (EFBIG)
int overflow_errno = EFBIG;
#elif defined (EOVERFLOW)
int overflow_errno = EOVERFLOW;
#else
int overflow_errno = EIO;
#endif
buffer = (char *)NULL;
buffer = last_ts = (char *)NULL;
input = history_filename (filename);
file = open (input, O_RDONLY|O_BINARY, 0666);
@ -167,37 +188,42 @@ read_history_range (filename, from, to)
/* check for overflow on very large files */
if (file_size != finfo.st_size || file_size + 1 < file_size)
{
#if defined (EFBIG)
errno = EFBIG;
#elif defined (EOVERFLOW)
errno = EOVERFLOW;
#endif
errno = overflow_errno;
goto error_and_exit;
}
#ifdef HAVE_MMAP
#ifdef HISTORY_USE_MMAP
/* We map read/write and private so we can change newlines to NULs without
affecting the underlying object. */
buffer = (char *)mmap (0, file_size, PROT_READ|PROT_WRITE, MAP_RFLAGS, file, 0);
if ((void *)buffer == MAP_FAILED)
goto error_and_exit;
{
errno = overflow_errno;
goto error_and_exit;
}
chars_read = file_size;
#else
buffer = (char *)malloc (file_size + 1);
if (buffer == 0)
goto error_and_exit;
{
errno = overflow_errno;
goto error_and_exit;
}
chars_read = read (file, buffer, file_size);
#endif
if (chars_read < 0)
{
error_and_exit:
chars_read = errno;
if (errno != 0)
chars_read = errno;
else
chars_read = EIO;
if (file >= 0)
close (file);
FREE (input);
#ifndef HAVE_MMAP
#ifndef HISTORY_USE_MMAP
FREE (buffer);
#endif
@ -218,8 +244,12 @@ read_history_range (filename, from, to)
for (line_start = line_end = buffer; line_end < bufend && current_line < from; line_end++)
if (*line_end == '\n')
{
current_line++;
line_start = line_end + 1;
p = line_end + 1;
/* If we see something we think is a timestamp, continue with this
line. We should check more extensively here... */
if (HIST_TIMESTAMP_START(p) == 0)
current_line++;
line_start = p;
}
/* If there are lines left to gobble, then gobble them now. */
@ -229,7 +259,22 @@ read_history_range (filename, from, to)
*line_end = '\0';
if (*line_start)
add_history (line_start);
{
if (HIST_TIMESTAMP_START(line_start) == 0)
{
add_history (line_start);
if (last_ts)
{
add_history_time (last_ts);
last_ts = NULL;
}
}
else
{
last_ts = line_start;
current_line--;
}
}
current_line++;
@ -240,7 +285,7 @@ read_history_range (filename, from, to)
}
FREE (input);
#ifndef HAVE_MMAP
#ifndef HISTORY_USE_MMAP
FREE (buffer);
#else
munmap (buffer, file_size);
@ -257,7 +302,7 @@ history_truncate_file (fname, lines)
const char *fname;
int lines;
{
char *buffer, *filename, *bp;
char *buffer, *filename, *bp, *bp1; /* bp1 == bp+1 */
int file, chars_read, rv;
struct stat finfo;
size_t file_size;
@ -320,11 +365,14 @@ history_truncate_file (fname, lines)
}
/* Count backwards from the end of buffer until we have passed
LINES lines. */
for (bp = buffer + chars_read - 1; lines && bp > buffer; bp--)
LINES lines. bp1 is set funny initially. But since bp[1] can't
be a comment character (since it's off the end) and *bp can't be
both a newline and the history comment character, it should be OK. */
for (bp1 = bp = buffer + chars_read - 1; lines && bp > buffer; bp--)
{
if (*bp == '\n')
if (*bp == '\n' && HIST_TIMESTAMP_START(bp1) == 0)
lines--;
bp1 = bp;
}
/* If this is the first line, then the file contains exactly the
@ -333,11 +381,14 @@ history_truncate_file (fname, lines)
the current value of i and 0. Otherwise, write from the start of
this line until the end of the buffer. */
for ( ; bp > buffer; bp--)
if (*bp == '\n')
{
bp++;
break;
}
{
if (*bp == '\n' && HIST_TIMESTAMP_START(bp1) == 0)
{
bp++;
break;
}
bp1 = bp;
}
/* Write only if there are more lines in the file than we want to
truncate to. */
@ -372,9 +423,9 @@ history_do_write (filename, nelements, overwrite)
register int i;
char *output;
int file, mode, rv;
#ifdef HISTORY_USE_MMAP
size_t cursize;
#ifdef HAVE_MMAP
mode = overwrite ? O_RDWR|O_CREAT|O_TRUNC|O_BINARY : O_RDWR|O_APPEND|O_BINARY;
#else
mode = overwrite ? O_WRONLY|O_CREAT|O_TRUNC|O_BINARY : O_WRONLY|O_APPEND|O_BINARY;
@ -388,7 +439,7 @@ history_do_write (filename, nelements, overwrite)
return (errno);
}
#ifdef HAVE_MMAP
#ifdef HISTORY_USE_MMAP
cursize = overwrite ? 0 : lseek (file, 0, SEEK_END);
#endif
@ -406,10 +457,18 @@ history_do_write (filename, nelements, overwrite)
the_history = history_list ();
/* Calculate the total number of bytes to write. */
for (buffer_size = 0, i = history_length - nelements; i < history_length; i++)
buffer_size += 1 + strlen (the_history[i]->line);
#if 0
buffer_size += 2 + HISTENT_BYTES (the_history[i]);
#else
{
if (history_write_timestamps && the_history[i]->timestamp && the_history[i]->timestamp[0])
buffer_size += strlen (the_history[i]->timestamp) + 1;
buffer_size += strlen (the_history[i]->line) + 1;
}
#endif
/* Allocate the buffer, and fill it. */
#ifdef HAVE_MMAP
#ifdef HISTORY_USE_MMAP
if (ftruncate (file, buffer_size+cursize) == -1)
goto mmap_error;
buffer = (char *)mmap (0, buffer_size, PROT_READ|PROT_WRITE, MAP_WFLAGS, file, cursize);
@ -434,12 +493,18 @@ mmap_error:
for (j = 0, i = history_length - nelements; i < history_length; i++)
{
if (history_write_timestamps && the_history[i]->timestamp && the_history[i]->timestamp[0])
{
strcpy (buffer + j, the_history[i]->timestamp);
j += strlen (the_history[i]->timestamp);
buffer[j++] = '\n';
}
strcpy (buffer + j, the_history[i]->line);
j += strlen (the_history[i]->line);
buffer[j++] = '\n';
}
#ifdef HAVE_MMAP
#ifdef HISTORY_USE_MMAP
if (msync (buffer, buffer_size, 0) != 0 || munmap (buffer, buffer_size) != 0)
rv = errno;
#else