glibc/libio/strops.c
Roland McGrath fa0bc87c32 Wed May 22 22:10:01 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* stdlib/canonicalize.c: New file.
	* stdlib/stdlib.h: Declare canonicalize_file_name, realpath.
	* stdlib/Makefile (routines): Add canonicalize.

	* posix/unistd.h: Declare __canonicalize_directory_name_internal.

Thu May 23 00:01:10 1996  Ulrich Drepper  <drepper@cygnus.com>

	* db/recno/rec_seq.c: Prevent `sccsid' definition by using the
	same #if condition as in the other db files.

	* intl/Makefile: Add -Wno-unused CFLAGS for compilation of
	bindtextdom.c, finddomain.c, and localealias.c.

	* intl/dcgettext.c: Don't define prototype for getcwd() when
	compiling in glibc.

	* libio/cleanup.c: Add prototype for _IO_register_cleanup.

	* libio/filedoalloc.c, libio/fileops.c, libio/iopopen.c: Don't
        define _POSIX_SOURCE unconditionally.

	* libio/filedoalloc.c, libio/iopopen.c: Include <unistd.h> if
        compiling in glibc.

	* libio/fileops.c (_IO_file_close_it): Don't sync file, call
	flush instead.  This relaxes the rules from POSIX.1 about
	changing the active handle a bit.

	* libio/iofopncook.c (struct _IO_cookie_file): Move definition
	into <libio.h>.
	Add prototypes for local functions to prevent warnings.

	* libio/iopopen.c: Change prototypes for _IO_fork, _IO_pipe, and
        _IO_DUP2 to contain complete parameter list.

	* libio/libio.h: Add definition of struct _IO_cookie_file.

	* libio/libioP.h: Add prototypes for _IO_vasprintf, _IO_vdprintf,
        and _IO_vsnprintf.

	* libio/memstream.c: Include <stdio.h>.

	* libio/stdio.h: Add prototypes for fopencookie,
        __stdio_gen_tempname, __vfscanf, __vsscanf, and __vsnprintf.

	* libio/strops.c: Avoid useless expression in `for' initializer.

	* locale/findlocale.c: Add some casts to prevent warnings.

	* locale/programs/locfile.c (write_locale_data): Don't use
	double `/' in locale binary file.

	* posix/unistd.h: Remove prototype for `reboot'.

	Update from bind-4.9.4-T1A.
	* resolv/Makefile (routines): Add inet_ntop and inet_pton.
	* resolv/arpa/nameser.h: Add definition of IN6ADDRSZ.
	* resolv/gethnamaddr.c, resolv/getnetnamadr.c, resolv/res_comp.c,
	resolv/res_debug.c, resolv/res_init.c

	* resolv/inet_ntop.c, resolv/inet_pton.c: New files.

	* resolv/resolv.h: Add RES_USE_INET6 flag.
	(__dn_isvalid): Renamed to __res_dnok.
	Add prototypes for __res_ownok and __res_mailok.

	* stdio-common/Makefile: Add -Wno-unused to CFLAGS for _itoa.c.

	* stdio-common/getline.c, stdio-common/vfscanf.c,
        sysdeps/posix/tempname.c: Don't use <ansidecl.h> anymore.

	* sysdeps/unix/sysv/linux/Makefile [$subdir == misc]
        (sysdep_routines): Add s_reboot.
	(install-others): Add $(includedir)/sys/syscall.h.
	New rule for $(includedir)/sys/syscall.h to produce from
	<asm/unistd.h>.

	* sysdeps/unix/sysv/linux/reboot.c: New file.  Make single
        argument function call 3 argument system call.

	* sysdeps/unix/sysv/linux/sys/reboot.h: New file.  Linux specific
	definition for reboot function.

	* sysdeps/unix/sysv/linux/syscall.h: Remove old and obsolete
        comment.

	* sysdeps/unix/sysv/linux/syscalls.list: Rename function for
	reboot syscall to __syscall_reboot.

	* wcsmbs/wchar.h: Protect prototypes for wcstof and wcstold by
	__USE_GNU, not USE_GNU.

Tue May 21 21:55:49 1996  David Mosberger-Tang  <davidm@AZStarNet.com>

	* locale/programs/charset.c, locale/programs/ld-collate.c:
	Add casts to prevent warnings on 64-bit machines.

	* locale/programs/ld-monetary.c: Don't do unnecessary tests for
	int_frac_digits and frac_digits which only produce warnings.

Mon May 13 23:45:29 1996  David Mosberger-Tang  <davidm@AZStarNet.com>

	* inet/arpa/inet.h: Backup return type of inet_addr to u_long.
	* resolv/inet_addr.c: Likewise.

	* resolv/Makefile (distribute): Add res_hconf.h
	(routines): Add res_hconf.

	* resolv/gethnamaddr.c: Add support for /etc/host.conf.

	* resolv/res_init.c: Initialize /etc/host.conf reader.

	* resolv/res_hconf.c, resolv/res_hconf.h: New files.
        Implementation of reading /etc/host.conf.

Wed May 22 21:21:15 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* Rules (%.out rules): Prepend $($*-ENV) to the command.

	* sysdeps/unix/sysv/linux/i386/brk.c (___brk_addr): Define as weak
	alias for __curbrk.

Wed May 22 19:37:27 1996  Miles Bader  <miles@gnu.ai.mit.edu>

	* hurd/hurdexec.c (_hurd_exec): Pass INIT_TRACEMASK.
	* hurd/hurdmsg.c (set_int): Support INIT_TRACEMASK.

Wed May 22 18:47:31 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* sysdeps/mach/hurd/getcwd.c
	(_hurd_canonicalize_directory_name_internal): New function, broken out
	of __getcwd.
	(__getcwd): Use it.
	(__canonicalize_directory_name_internal): New function using it.

	* sysdeps/posix/getcwd.c (__canonicalize_directory_name_internal): New
	function, broken out of __getcwd.
	(__getcwd): Use it.

Wed May 22 18:14:05 1996  Miles Bader  <miles@gnu.ai.mit.edu>

	* string/argz-create.c (__argz_create): Correctly calculate length.

	* string/argz-extract.c (__argz_extract): Add terminating 0 entry.
	* hurd/hurdstartup.c (_hurd_startup): ... and don't so here.

	[HAVE_VMSDIR_H]: Include "vmsdir.h".
	(glob) [VMS]: Don't grok ~.
1996-05-23 03:15:42 +00:00

286 lines
7.9 KiB
C

/*
Copyright (C) 1993 Free Software Foundation
This file is part of the GNU IO Library. This library 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 2, or (at your option)
any later version.
This library 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 library; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
As a special exception, if you link this library with files
compiled with a GNU compiler to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#include "strfile.h"
#include "libioP.h"
#include <string.h>
#define LEN(fp) (((_IO_strfile*)(fp))->_s._len)
#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
DEFUN(_IO_str_init_static, (fp, ptr, size, pstart),
_IO_FILE *fp AND char *ptr AND int size AND char *pstart)
{
if (size == 0)
size = strlen(ptr);
else if (size < 0)
{
/* If size is negative 'the characters are assumed to
continue indefinitely.' This is kind of messy ... */
#if 1
int s;
size = 512;
/* Try increasing powers of 2, as long as we don't wrap around.
This can lose in pathological cases (ptr near the end
of the address space). A better solution might be to
adjust the size on underflow/overflow. FIXME. */
for ( ; s = 2*size, s > 0 && ptr + s > ptr && s < 0x4000000L; )
size = s;
size = s;
#else
/* The following semi-portable kludge assumes that
sizeof(unsigned long) == sizeof(char*). Hence,
(unsigned long)(-1) should be the largest possible address. */
unsigned long highest = (unsigned long)(-1);
/* Pointers are signed on some brain-damaged systems, in
which case we divide by two to get the maximum signed address. */
if ((char*)highest < ptr)
highest >>= 1;
size = (char*)highest - ptr;
#endif
}
_IO_setb(fp, ptr, ptr+size, 0);
fp->_IO_write_base = ptr;
fp->_IO_read_base = ptr;
fp->_IO_read_ptr = ptr;
if (pstart)
{
fp->_IO_write_ptr = pstart;
fp->_IO_write_end = ptr+size;
fp->_IO_read_end = pstart;
}
else
{
fp->_IO_write_ptr = ptr;
fp->_IO_write_end = ptr;
fp->_IO_read_end = ptr+size;
}
LEN(fp) = size;
/* A null _allocate_buffer function flags the strfile as being static. */
(((_IO_strfile*)(fp))->_s._allocate_buffer) = (_IO_alloc_type)0;
}
void
DEFUN(_IO_str_init_readonly, (fp, ptr, size),
_IO_FILE *fp AND const char *ptr AND int size)
{
_IO_str_init_static (fp, (char*)ptr, size, NULL);
fp->_IO_file_flags |= _IO_NO_WRITES;
}
int
DEFUN(_IO_str_overflow, (fp, c),
register _IO_FILE* fp AND int c)
{
int flush_only = c == EOF;
_IO_size_t pos = fp->_IO_write_ptr - fp->_IO_write_base;
_IO_size_t get_pos = fp->_IO_read_ptr - fp->_IO_read_base;
if (fp->_flags & _IO_NO_WRITES)
return flush_only ? 0 : EOF;
if (pos > LEN(fp)) LEN(fp) = pos;
if ((fp->_flags & _IO_TIED_PUT_GET) && !(fp->_flags & _IO_CURRENTLY_PUTTING))
{
pos = get_pos;
fp->_flags |= _IO_CURRENTLY_PUTTING;
get_pos = LEN(fp);
}
if (pos >= _IO_blen(fp) + flush_only)
{
if (fp->_flags & _IO_USER_BUF) /* not allowed to enlarge */
{
#ifdef TODO
if (indefinite size)
{
fp->_IO_buf_end += 512;
}
else
#endif
return EOF;
}
else
{
char *new_buf;
_IO_size_t new_size = 2 * _IO_blen(fp);
new_buf
= (char*)(*((_IO_strfile*)fp)->_s._allocate_buffer)(new_size);
if (new_buf == NULL)
{
/* __ferror(fp) = 1; */
return EOF;
}
memcpy(new_buf, fp->_IO_buf_base, _IO_blen(fp));
#if 0
if (lenp == &LEN(fp)) /* use '\0'-filling */
memset(new_buf + pos, 0, blen() - pos);
#endif
if (fp->_IO_buf_base)
{
(*((_IO_strfile*)fp)->_s._free_buffer)(fp->_IO_buf_base);
/* Make sure _IO_setb won't try to delete _IO_buf_base. */
fp->_IO_buf_base = NULL;
}
_IO_setb(fp, new_buf, new_buf + new_size, 1);
fp->_IO_write_base = new_buf;
}
fp->_IO_write_end = fp->_IO_buf_end;
}
fp->_IO_write_ptr = fp->_IO_buf_base + pos;
fp->_IO_read_base = fp->_IO_buf_base;
fp->_IO_read_ptr = fp->_IO_buf_base + get_pos;
fp->_IO_read_end = fp->_IO_buf_base + LEN(fp);
if (!flush_only)
*fp->_IO_write_ptr++ = (unsigned char) c;
return c;
}
int
DEFUN(_IO_str_underflow, (fp),
register _IO_FILE* fp)
{
_IO_size_t ppos = fp->_IO_write_ptr - fp->_IO_write_base;
if (ppos > LEN(fp)) LEN(fp) = ppos;
if ((fp->_flags & _IO_TIED_PUT_GET) && (fp->_flags & _IO_CURRENTLY_PUTTING))
{
fp->_flags &= ~_IO_CURRENTLY_PUTTING;
fp->_IO_write_ptr = fp->_IO_write_end;
}
fp->_IO_read_end = fp->_IO_read_base + LEN(fp);
if (fp->_IO_read_ptr < fp->_IO_read_end)
return *fp->_IO_read_ptr;
else
return EOF;
}
_IO_ssize_t
DEFUN(_IO_str_count, (fp),
register _IO_FILE *fp)
{
_IO_ssize_t put_len = fp->_IO_write_ptr - fp->_IO_write_base;
if (put_len < LEN(fp))
put_len = LEN(fp);
return put_len;
}
_IO_pos_t
DEFUN(_IO_str_seekoff, (fp, offset, dir, mode),
register _IO_FILE *fp AND _IO_off_t offset AND int dir AND int mode)
{
_IO_ssize_t cur_size = _IO_str_count(fp);
_IO_pos_t new_pos = EOF;
/* Move the get pointer, if requested. */
if (mode & _IOS_INPUT)
{
switch (dir)
{
case _IO_seek_end:
offset += cur_size;
break;
case _IO_seek_cur:
offset += fp->_IO_read_ptr - fp->_IO_read_base;
break;
default: /* case _IO_seek_set: */
break;
}
if (offset < 0 || (_IO_size_t)offset > cur_size)
return EOF;
fp->_IO_read_ptr = fp->_IO_read_base + offset;
fp->_IO_read_end = fp->_IO_read_base + cur_size;
new_pos = offset;
}
/* Move the put pointer, if requested. */
if (mode & _IOS_OUTPUT)
{
switch (dir)
{
case _IO_seek_end:
offset += cur_size;
break;
case _IO_seek_cur:
offset += fp->_IO_write_ptr - fp->_IO_write_base;
break;
default: /* case _IO_seek_set: */
break;
}
if (offset < 0 || (_IO_size_t)offset > cur_size)
return EOF;
LEN(fp) = cur_size;
fp->_IO_write_ptr = fp->_IO_write_base + offset;
new_pos = offset;
}
return new_pos;
}
int
DEFUN(_IO_str_pbackfail, (fp, c),
register _IO_FILE *fp AND int c)
{
if ((fp->_flags & _IO_NO_WRITES) && c != EOF)
return EOF;
return _IO_default_pbackfail(fp, c);
}
void
DEFUN (_IO_str_finish, (fp),
register _IO_FILE* fp)
{
if (fp->_IO_buf_base && !(fp->_flags & _IO_USER_BUF))
(((_IO_strfile*)fp)->_s._free_buffer)(fp->_IO_buf_base);
fp->_IO_buf_base = NULL;
_IO_default_finish(fp);
}
struct _IO_jump_t _IO_str_jumps = {
JUMP_INIT_DUMMY,
JUMP_INIT(finish, _IO_str_finish),
JUMP_INIT(overflow, _IO_str_overflow),
JUMP_INIT(underflow, _IO_str_underflow),
JUMP_INIT(uflow, _IO_default_uflow),
JUMP_INIT(pbackfail, _IO_str_pbackfail),
JUMP_INIT(xsputn, _IO_default_xsputn),
JUMP_INIT(xsgetn, _IO_default_xsgetn),
JUMP_INIT(seekoff, _IO_str_seekoff),
JUMP_INIT(seekpos, _IO_default_seekpos),
JUMP_INIT(setbuf, _IO_default_setbuf),
JUMP_INIT(sync, _IO_default_sync),
JUMP_INIT(doallocate, _IO_default_doallocate),
JUMP_INIT(read, _IO_default_read),
JUMP_INIT(write, _IO_default_write),
JUMP_INIT(seek, _IO_default_seek),
JUMP_INIT(close, _IO_default_close),
JUMP_INIT(stat, _IO_default_stat)
};