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2.5-18.1

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This commit is contained in:
Jakub Jelinek
2007-07-12 18:26:36 +00:00
parent 7d58530341
commit 0ecb606cb6
6215 changed files with 494638 additions and 305010 deletions
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125
libio/strops.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1993, 1997-2003, 2004 Free Software Foundation, Inc.
/* Copyright (C) 1993, 1997-2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -25,43 +25,12 @@
This exception applies to code released by its copyright holders
in files containing the exception. */
#include <assert.h>
#include "strfile.h"
#include "libioP.h"
#include <string.h>
#include <stdio_ext.h>
#if 0
/* The following definitions are for exposition only.
They map the terminology used in the ANSI/ISO C++ draft standard
to the implementation. */
/* allocated: set when a dynamic array object has been allocated, and
hence should be freed by the destructor for the strstreambuf object. */
#define ALLOCATED(FP) ((FP)->_f._IO_buf_base && DYNAMIC(FP))
/* constant: set when the array object has const elements,
so the output sequence cannot be written. */
#define CONSTANT(FP) ((FP)->_f._IO_file_flags & _IO_NO_WRITES)
/* alsize: the suggested minimum size for a dynamic array object. */
#define ALSIZE(FP) ??? /* not stored */
/* palloc: points to the function to call to allocate a dynamic array object.*/
#define PALLOC(FP) \
((FP)->_s._allocate_buffer == default_alloc ? 0 : (FP)->_s._allocate_buffer)
/* pfree: points to the function to call to free a dynamic array object. */
#define PFREE(FP) \
((FP)->_s._free_buffer == default_free ? 0 : (FP)->_s._free_buffer)
#endif
#ifdef TODO
/* An "unbounded buffer" is when a buffer is supplied, but with no
specified length. An example is the buffer argument to sprintf.
*/
#endif
void
_IO_str_init_static_internal (sf, ptr, size, pstart)
_IO_strfile *sf;
@ -134,7 +103,7 @@ _IO_str_overflow (fp, c)
fp->_IO_write_ptr = fp->_IO_read_ptr;
fp->_IO_read_ptr = fp->_IO_read_end;
}
pos = fp->_IO_write_ptr - fp->_IO_write_base;
pos = fp->_IO_write_ptr - fp->_IO_write_base;
if (pos >= (_IO_size_t) (_IO_blen (fp) + flush_only))
{
if (fp->_flags & _IO_USER_BUF) /* not allowed to enlarge */
@ -143,7 +112,10 @@ _IO_str_overflow (fp, c)
{
char *new_buf;
char *old_buf = fp->_IO_buf_base;
_IO_size_t new_size = 2 * _IO_blen (fp) + 100;
size_t old_blen = _IO_blen (fp);
_IO_size_t new_size = 2 * old_blen + 100;
if (new_size < old_blen)
return EOF;
new_buf
= (char *) (*((_IO_strfile *) fp)->_s._allocate_buffer) (new_size);
if (new_buf == NULL)
@ -153,15 +125,13 @@ _IO_str_overflow (fp, c)
}
if (old_buf)
{
memcpy (new_buf, old_buf, _IO_blen (fp));
memcpy (new_buf, old_buf, old_blen);
(*((_IO_strfile *) fp)->_s._free_buffer) (old_buf);
/* Make sure _IO_setb won't try to delete _IO_buf_base. */
fp->_IO_buf_base = NULL;
}
#if 0
if (lenp == &LEN(fp)) /* use '\0'-filling */
memset (new_buf + pos, 0, blen() - pos);
#endif
memset (new_buf + old_blen, '\0', new_size - old_blen);
INTUSE(_IO_setb) (fp, new_buf, new_buf + new_size, 1);
fp->_IO_read_base = new_buf + (fp->_IO_read_base - old_buf);
fp->_IO_read_ptr = new_buf + (fp->_IO_read_ptr - old_buf);
@ -211,6 +181,71 @@ _IO_str_count (fp)
- fp->_IO_read_base);
}
static int
enlarge_userbuf (_IO_FILE *fp, _IO_off64_t offset, int reading)
{
if ((_IO_ssize_t) offset <= _IO_blen (fp))
return 0;
_IO_ssize_t oldend = fp->_IO_write_end - fp->_IO_write_base;
/* Try to enlarge the buffer. */
if (fp->_flags & _IO_USER_BUF)
/* User-provided buffer. */
return 1;
_IO_size_t newsize = offset + 100;
char *oldbuf = fp->_IO_buf_base;
char *newbuf
= (char *) (*((_IO_strfile *) fp)->_s._allocate_buffer) (newsize);
if (newbuf == NULL)
return 1;
if (oldbuf != NULL)
{
memcpy (newbuf, oldbuf, _IO_blen (fp));
(*((_IO_strfile *) fp)->_s._free_buffer) (oldbuf);
/* Make sure _IO_setb won't try to delete
_IO_buf_base. */
fp->_IO_buf_base = NULL;
}
INTUSE(_IO_setb) (fp, newbuf, newbuf + newsize, 1);
if (reading)
{
fp->_IO_write_base = newbuf + (fp->_IO_write_base - oldbuf);
fp->_IO_write_ptr = newbuf + (fp->_IO_write_ptr - oldbuf);
fp->_IO_write_end = newbuf + (fp->_IO_write_end - oldbuf);
fp->_IO_read_ptr = newbuf + (fp->_IO_read_ptr - oldbuf);
fp->_IO_read_base = newbuf;
fp->_IO_read_end = fp->_IO_buf_end;
}
else
{
fp->_IO_read_base = newbuf + (fp->_IO_read_base - oldbuf);
fp->_IO_read_ptr = newbuf + (fp->_IO_read_ptr - oldbuf);
fp->_IO_read_end = newbuf + (fp->_IO_read_end - oldbuf);
fp->_IO_write_ptr = newbuf + (fp->_IO_write_ptr - oldbuf);
fp->_IO_write_base = newbuf;
fp->_IO_write_end = fp->_IO_buf_end;
}
/* Clear the area between the last write position and th
new position. */
assert (offset >= oldend);
if (reading)
memset (fp->_IO_read_base + oldend, '\0', offset - oldend);
else
memset (fp->_IO_write_base + oldend, '\0', offset - oldend);
return 0;
}
_IO_off64_t
_IO_str_seekoff (fp, offset, dir, mode)
_IO_FILE *fp;
@ -251,7 +286,10 @@ _IO_str_seekoff (fp, offset, dir, mode)
default: /* case _IO_seek_set: */
break;
}
if (offset < 0 || (_IO_ssize_t) offset > cur_size)
if (offset < 0)
return EOF;
if ((_IO_ssize_t) offset > cur_size
&& enlarge_userbuf (fp, offset, 1) != 0)
return EOF;
fp->_IO_read_ptr = fp->_IO_read_base + offset;
fp->_IO_read_end = fp->_IO_read_base + cur_size;
@ -272,7 +310,10 @@ _IO_str_seekoff (fp, offset, dir, mode)
default: /* case _IO_seek_set: */
break;
}
if (offset < 0 || (_IO_ssize_t) offset > cur_size)
if (offset < 0)
return EOF;
if ((_IO_ssize_t) offset > cur_size
&& enlarge_userbuf (fp, offset, 0) != 0)
return EOF;
fp->_IO_write_ptr = fp->_IO_write_base + offset;
new_pos = offset;