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Imported from ../bash-2.02.tar.gz.

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This commit is contained in:
Jari Aalto 1998-04-17 19:52:44 +00:00
commit cce855bc5b
323 changed files with 33916 additions and 12321 deletions
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49
lib/readline/histfile.c
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@ -32,7 +32,9 @@
#include <stdio.h>
#include <sys/types.h>
#include <sys/file.h>
#ifndef _MINIX
# include <sys/file.h>
#endif
#include <sys/stat.h>
#include <fcntl.h>
@ -129,19 +131,31 @@ read_history_range (filename, from, to)
int from, to;
{
register int line_start, line_end;
char *input, *buffer = (char *)NULL;
char *input, *buffer;
int file, current_line;
struct stat finfo;
size_t file_size;
buffer = (char *)NULL;
input = history_filename (filename);
file = open (input, O_RDONLY|O_BINARY, 0666);
if ((file < 0) || (fstat (file, &finfo) == -1))
goto error_and_exit;
buffer = xmalloc ((int)finfo.st_size + 1);
file_size = (size_t)finfo.st_size;
if (read (file, buffer, finfo.st_size) != finfo.st_size)
/* check for overflow on very large files */
if (file_size != finfo.st_size || file_size + 1 < file_size)
{
#if defined (EFBIG)
errno = EFBIG;
#endif
goto error_and_exit;
}
buffer = xmalloc (file_size + 1);
if (read (file, buffer, file_size) != file_size)
{
error_and_exit:
if (file >= 0)
@ -157,15 +171,15 @@ read_history_range (filename, from, to)
/* Set TO to larger than end of file if negative. */
if (to < 0)
to = finfo.st_size;
to = file_size;
/* Start at beginning of file, work to end. */
line_start = line_end = current_line = 0;
/* Skip lines until we are at FROM. */
while (line_start < finfo.st_size && current_line < from)
while (line_start < file_size && current_line < from)
{
for (line_end = line_start; line_end < finfo.st_size; line_end++)
for (line_end = line_start; line_end < file_size; line_end++)
if (buffer[line_end] == '\n')
{
current_line++;
@ -176,7 +190,7 @@ read_history_range (filename, from, to)
}
/* If there are lines left to gobble, then gobble them now. */
for (line_end = line_start; line_end < finfo.st_size; line_end++)
for (line_end = line_start; line_end < file_size; line_end++)
if (buffer[line_end] == '\n')
{
buffer[line_end] = '\0';
@ -209,6 +223,7 @@ history_truncate_file (fname, lines)
int file, chars_read;
char *buffer, *filename;
struct stat finfo;
size_t file_size;
buffer = (char *)NULL;
filename = history_filename (fname);
@ -217,8 +232,20 @@ history_truncate_file (fname, lines)
if (file == -1 || fstat (file, &finfo) == -1)
goto truncate_exit;
buffer = xmalloc ((int)finfo.st_size + 1);
chars_read = read (file, buffer, finfo.st_size);
file_size = (size_t)finfo.st_size;
/* check for overflow on very large files */
if (file_size != finfo.st_size || file_size + 1 < file_size)
{
close (file);
#if defined (EFBIG)
errno = EFBIG;
#endif
goto truncate_exit;
}
buffer = xmalloc (file_size + 1);
chars_read = read (file, buffer, file_size);
close (file);
if (chars_read <= 0)
@ -248,7 +275,7 @@ history_truncate_file (fname, lines)
truncate to. */
if (i && ((file = open (filename, O_WRONLY|O_TRUNC|O_BINARY, 0600)) != -1))
{
write (file, buffer + i, finfo.st_size - i);
write (file, buffer + i, file_size - i);
close (file);
}