2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
473 lines
10 KiB
C
473 lines
10 KiB
C
/* $NetBSD: citrus_ues.c,v 1.2 2010/12/07 22:01:22 joerg Exp $ */
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/*-
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* Copyright (c)2006 Citrus Project,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: citrus_ues.c,v 1.2 2010/12/07 22:01:22 joerg Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include <assert.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <wchar.h>
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#include "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_bcs.h"
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#include "citrus_module.h"
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#include "citrus_ctype.h"
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#include "citrus_stdenc.h"
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#include "citrus_ues.h"
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typedef struct {
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int mode;
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#define MODE_C99 1
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size_t mb_cur_max;
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} _UESEncodingInfo;
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typedef struct {
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int chlen;
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char ch[12];
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} _UESState;
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typedef struct {
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_UESEncodingInfo ei;
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struct {
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/* for future multi-locale facility */
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_UESState s_mblen;
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_UESState s_mbrlen;
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_UESState s_mbrtowc;
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_UESState s_mbtowc;
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_UESState s_mbsrtowcs;
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_UESState s_wcrtomb;
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_UESState s_wcsrtombs;
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_UESState s_wctomb;
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} states;
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} _UESCTypeInfo;
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#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
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#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
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#define _FUNCNAME(m) _citrus_UES_##m
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#define _ENCODING_INFO _UESEncodingInfo
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#define _CTYPE_INFO _UESCTypeInfo
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#define _ENCODING_STATE _UESState
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#define _ENCODING_MB_CUR_MAX(_ei_) (_ei_)->mb_cur_max
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#define _ENCODING_IS_STATE_DEPENDENT 0
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#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
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static __inline void
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/*ARGSUSED*/
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_citrus_UES_init_state(_UESEncodingInfo * __restrict ei,
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_UESState * __restrict psenc)
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{
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psenc->chlen = 0;
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_UES_pack_state(_UESEncodingInfo * __restrict ei,
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void *__restrict pspriv, const _UESState * __restrict psenc)
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{
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/* ei seem to be unused */
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_DIAGASSERT(pspriv != NULL);
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_DIAGASSERT(psenc != NULL);
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memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_UES_unpack_state(_UESEncodingInfo * __restrict ei,
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_UESState * __restrict psenc, const void * __restrict pspriv)
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{
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/* ei seem to be unused */
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_DIAGASSERT(psenc != NULL);
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_DIAGASSERT(pspriv != NULL);
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memcpy((void *)psenc, pspriv, sizeof(*psenc));
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}
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static __inline int
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to_int(int ch)
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{
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if (ch >= '0' && ch <= '9')
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return ch - '0';
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else if (ch >= 'A' && ch <= 'F')
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return (ch - 'A') + 10;
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else if (ch >= 'a' && ch <= 'f')
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return (ch - 'a') + 10;
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return -1;
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}
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#define ESCAPE '\\'
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#define UCS2_ESC 'u'
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#define UCS4_ESC 'U'
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#define UCS2_BIT 16
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#define UCS4_BIT 32
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#define BMP_MAX UINT32_C(0xFFFF)
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#define UCS2_MAX UINT32_C(0x10FFFF)
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#define UCS4_MAX UINT32_C(0x7FFFFFFF)
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static const char *xdig = "0123456789abcdef";
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static __inline int
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to_str(char *s, wchar_t wc, int bit)
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{
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char *p;
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p = s;
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*p++ = ESCAPE;
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switch (bit) {
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case UCS2_BIT:
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*p++ = UCS2_ESC;
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break;
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case UCS4_BIT:
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*p++ = UCS4_ESC;
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break;
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default:
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abort();
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}
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do {
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*p++ = xdig[(wc >> (bit -= 4)) & 0xF];
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} while (bit > 0);
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return p - s;
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}
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static __inline int
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is_hi_surrogate(wchar_t wc)
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{
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return wc >= 0xD800 && wc <= 0xDBFF;
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}
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static __inline int
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is_lo_surrogate(wchar_t wc)
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{
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return wc >= 0xDC00 && wc <= 0xDFFF;
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}
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static __inline wchar_t
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surrogate_to_ucs(wchar_t hi, wchar_t lo)
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{
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_DIAGASSERT(is_hi_surrogate(hi));
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_DIAGASSERT(is_lo_surrogate(lo));
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hi -= 0xD800;
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lo -= 0xDC00;
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return (hi << 10 | lo) + 0x10000;
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}
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static __inline void
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ucs_to_surrogate(wchar_t wc, wchar_t * __restrict hi, wchar_t * __restrict lo)
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{
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_DIAGASSERT(hi != NULL);
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_DIAGASSERT(lo != NULL);
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_DIAGASSERT(wc >= 0x10000);
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wc -= 0x10000;
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*hi = (wc >> 10) + 0xD800;
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*lo = (wc & 0x3FF) + 0xDC00;
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}
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static __inline int
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is_basic(wchar_t wc)
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{
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return (uint32_t)wc <= 0x9F &&
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wc != 0x24 && wc != 0x40 && wc != 0x60;
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}
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static int
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_citrus_UES_mbrtowc_priv(_UESEncodingInfo * __restrict ei,
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wchar_t * __restrict pwc, const char ** __restrict s, size_t n,
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_UESState * __restrict psenc, size_t * __restrict nresult)
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{
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const char *s0;
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int ch, head, tail, i, num;
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wchar_t hi, wc;
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_DIAGASSERT(ei != NULL);
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/* pwc may be null */
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_DIAGASSERT(s != NULL);
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_DIAGASSERT(psenc != NULL);
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_DIAGASSERT(nresult != NULL);
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if (*s == NULL) {
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_citrus_UES_init_state(ei, psenc);
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*nresult = 0;
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return 0;
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}
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s0 = *s;
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hi = (wchar_t)0;
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tail = 0;
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surrogate:
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wc = (wchar_t)0;
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head = tail;
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if (psenc->chlen == head) {
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if (n-- < 1)
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goto restart;
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psenc->ch[psenc->chlen++] = *s0++;
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}
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ch = (unsigned char)psenc->ch[head++];
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if (ch == ESCAPE) {
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if (psenc->chlen == head) {
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if (n-- < 1)
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goto restart;
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psenc->ch[psenc->chlen++] = *s0++;
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}
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switch (psenc->ch[head]) {
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case UCS2_ESC:
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tail += 6;
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break;
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case UCS4_ESC:
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if (ei->mode & MODE_C99) {
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tail = 10;
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break;
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}
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/*FALLTHROUGH*/
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default:
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tail = 0;
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}
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++head;
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}
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for (; head < tail; ++head) {
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if (psenc->chlen == head) {
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if (n-- < 1) {
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restart:
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*s = s0;
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*nresult = (size_t)-2;
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return 0;
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}
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psenc->ch[psenc->chlen++] = *s0++;
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}
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num = to_int((int)(unsigned char)psenc->ch[head]);
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if (num < 0) {
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tail = 0;
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break;
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}
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wc = (wc << 4) | num;
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}
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head = 0;
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switch (tail) {
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case 0:
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break;
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case 6:
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if (hi != (wchar_t)0)
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break;
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if ((ei->mode & MODE_C99) == 0) {
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if (is_hi_surrogate(wc) != 0) {
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hi = wc;
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goto surrogate;
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}
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if ((uint32_t)wc <= 0x7F /* XXX */ ||
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is_lo_surrogate(wc) != 0)
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break;
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goto done;
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}
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/*FALLTHROUGH*/
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case 10:
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if (is_basic(wc) == 0 && (uint32_t)wc <= UCS4_MAX &&
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is_hi_surrogate(wc) == 0 && is_lo_surrogate(wc) == 0)
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goto done;
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*nresult = (size_t)-1;
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return EILSEQ;
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case 12:
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if (is_lo_surrogate(wc) == 0)
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break;
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wc = surrogate_to_ucs(hi, wc);
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goto done;
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}
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ch = (unsigned char)psenc->ch[0];
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head = psenc->chlen;
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if (--head > 0)
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memmove(&psenc->ch[0], &psenc->ch[1], head);
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wc = (wchar_t)ch;
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done:
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psenc->chlen = head;
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if (pwc != NULL)
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*pwc = wc;
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*nresult = (size_t)((wc == 0) ? 0 : (s0 - *s));
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*s = s0;
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return 0;
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}
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static int
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_citrus_UES_wcrtomb_priv(_UESEncodingInfo * __restrict ei,
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char * __restrict s, size_t n, wchar_t wc,
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_UESState * __restrict psenc, size_t * __restrict nresult)
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{
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wchar_t hi, lo;
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if (psenc->chlen != 0)
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return EINVAL;
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if ((ei->mode & MODE_C99) ? is_basic(wc) : (uint32_t)wc <= 0x7F) {
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if (n-- < 1)
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goto e2big;
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psenc->ch[psenc->chlen++] = (char)wc;
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} else if ((uint32_t)wc <= BMP_MAX) {
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if (n < 6)
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goto e2big;
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psenc->chlen = to_str(&psenc->ch[0], wc, UCS2_BIT);
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} else if ((ei->mode & MODE_C99) == 0 && (uint32_t)wc <= UCS2_MAX) {
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if (n < 12)
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goto e2big;
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ucs_to_surrogate(wc, &hi, &lo);
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psenc->chlen += to_str(&psenc->ch[0], hi, UCS2_BIT);
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psenc->chlen += to_str(&psenc->ch[6], lo, UCS2_BIT);
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} else if ((ei->mode & MODE_C99) && (uint32_t)wc <= UCS4_MAX) {
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if (n < 10)
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goto e2big;
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psenc->chlen = to_str(&psenc->ch[0], wc, UCS4_BIT);
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} else {
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*nresult = (size_t)-1;
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return EILSEQ;
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}
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memcpy(s, psenc->ch, psenc->chlen);
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*nresult = psenc->chlen;
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psenc->chlen = 0;
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return 0;
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e2big:
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*nresult = (size_t)-1;
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return E2BIG;
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}
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/*ARGSUSED*/
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static int
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_citrus_UES_stdenc_wctocs(_UESEncodingInfo * __restrict ei,
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_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
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{
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/* ei seem to be unused */
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_DIAGASSERT(csid != NULL);
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_DIAGASSERT(idx != NULL);
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*csid = 0;
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*idx = (_index_t)wc;
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return 0;
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_UES_stdenc_cstowc(_UESEncodingInfo * __restrict ei,
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wchar_t * __restrict wc, _csid_t csid, _index_t idx)
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{
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/* ei seem to be unused */
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_DIAGASSERT(wc != NULL);
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if (csid != 0)
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return EILSEQ;
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*wc = (wchar_t)idx;
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return 0;
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_UES_stdenc_get_state_desc_generic(_UESEncodingInfo * __restrict ei,
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_UESState * __restrict psenc, int * __restrict rstate)
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{
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_DIAGASSERT(psenc != NULL);
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_DIAGASSERT(rstate != NULL);
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if (psenc->chlen == 0)
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*rstate = _STDENC_SDGEN_INITIAL;
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else
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*rstate = _STDENC_SDGEN_INCOMPLETE_CHAR; /* XXX */
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return 0;
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}
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static void
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/*ARGSUSED*/
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_citrus_UES_encoding_module_uninit(_UESEncodingInfo *ei)
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{
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/* ei seems to be unused */
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}
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static int
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/*ARGSUSED*/
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_citrus_UES_encoding_module_init(_UESEncodingInfo * __restrict ei,
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const void * __restrict var, size_t lenvar)
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{
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const char *p;
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_DIAGASSERT(ei != NULL);
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p = var;
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#define MATCH(x, act) \
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do { \
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if (lenvar >= (sizeof(#x)-1) && \
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_bcs_strncasecmp(p, #x, sizeof(#x)-1) == 0) { \
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act; \
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lenvar -= sizeof(#x)-1; \
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p += sizeof(#x)-1; \
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} \
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} while (/*CONSTCOND*/0)
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memset((void *)ei, 0, sizeof(*ei));
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while (lenvar > 0) {
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switch (_bcs_toupper(*p)) {
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case 'C':
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MATCH(C99, ei->mode |= MODE_C99);
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break;
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}
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++p;
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--lenvar;
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}
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ei->mb_cur_max = (ei->mode & MODE_C99) ? 10 : 12;
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return 0;
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}
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/* ----------------------------------------------------------------------
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* public interface for ctype
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*/
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_CITRUS_CTYPE_DECLS(UES);
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_CITRUS_CTYPE_DEF_OPS(UES);
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#include "citrus_ctype_template.h"
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/* ----------------------------------------------------------------------
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* public interface for stdenc
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*/
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_CITRUS_STDENC_DECLS(UES);
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_CITRUS_STDENC_DEF_OPS(UES);
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#include "citrus_stdenc_template.h"
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