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62a40350b1
BREAKS SOURCE RELEASE BUILD Some of the required files were not getting copied while performing 'make dist' and hence the build failed for the created distribution source. Added the missing files to Makefile.am.
362 lines
8.6 KiB
C
362 lines
8.6 KiB
C
/* $NetBSD: chartype.c,v 1.10 2011/08/16 16:25:15 christos Exp $ */
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/*-
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* Copyright (c) 2009 The NetBSD Foundation, Inc.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* chartype.c: character classification and meta information
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*/
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#include "config.h"
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#if !defined(lint) && !defined(SCCSID)
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#endif /* not lint && not SCCSID */
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#include "el.h"
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#include <stdlib.h>
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#define CT_BUFSIZ ((size_t)1024)
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#ifdef WIDECHAR
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protected void
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ct_conv_buff_resize(ct_buffer_t *conv, size_t mincsize, size_t minwsize)
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{
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void *p;
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if (mincsize > conv->csize) {
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conv->csize = mincsize;
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p = el_realloc(conv->cbuff, conv->csize * sizeof(*conv->cbuff));
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if (p == NULL) {
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conv->csize = 0;
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el_free(conv->cbuff);
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conv->cbuff = NULL;
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} else
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conv->cbuff = p;
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}
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if (minwsize > conv->wsize) {
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conv->wsize = minwsize;
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p = el_realloc(conv->wbuff, conv->wsize * sizeof(*conv->wbuff));
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if (p == NULL) {
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conv->wsize = 0;
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el_free(conv->wbuff);
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conv->wbuff = NULL;
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} else
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conv->wbuff = p;
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}
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}
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public char *
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ct_encode_string(const Char *s, ct_buffer_t *conv)
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{
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char *dst;
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ssize_t used = 0;
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mbstate_t state;
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memset(&state, 0, sizeof(mbstate_t));
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if (!s)
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return NULL;
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if (!conv->cbuff)
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ct_conv_buff_resize(conv, CT_BUFSIZ, (size_t)0);
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if (!conv->cbuff)
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return NULL;
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dst = conv->cbuff;
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while (*s) {
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used = (ssize_t)(conv->csize - (size_t)(dst - conv->cbuff));
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if (used < 5) {
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used = dst - conv->cbuff;
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ct_conv_buff_resize(conv, conv->csize + CT_BUFSIZ,
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(size_t)0);
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if (!conv->cbuff)
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return NULL;
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dst = conv->cbuff + used;
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}
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used = ct_encode_char(dst, (size_t)5, *s, &state);
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if (used == -1) /* failed to encode, need more buffer space */
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abort();
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++s;
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dst += used;
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}
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*dst = '\0';
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return conv->cbuff;
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}
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public Char *
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ct_decode_string(const char *s, ct_buffer_t *conv)
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{
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size_t len = 0;
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if (!s)
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return NULL;
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if (!conv->wbuff)
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ct_conv_buff_resize(conv, (size_t)0, CT_BUFSIZ);
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if (!conv->wbuff)
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return NULL;
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len = ct_mbstowcs(NULL, s, (size_t)0);
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if (len == (size_t)-1)
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return NULL;
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if (len > conv->wsize)
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ct_conv_buff_resize(conv, (size_t)0, len + 1);
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if (!conv->wbuff)
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return NULL;
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ct_mbstowcs(conv->wbuff, s, conv->wsize);
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return conv->wbuff;
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}
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protected Char **
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ct_decode_argv(int argc, const char *argv[], ct_buffer_t *conv)
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{
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size_t bufspace;
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int i;
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Char *p;
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Char **wargv;
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ssize_t bytes;
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mbstate_t state;
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/* Make sure we have enough space in the conversion buffer to store all
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* the argv strings. */
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for (i = 0, bufspace = 0; i < argc; ++i)
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bufspace += argv[i] ? strlen(argv[i]) + 1 : 0;
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ct_conv_buff_resize(conv, (size_t)0, bufspace);
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if (!conv->wsize)
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return NULL;
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wargv = el_malloc((size_t)argc * sizeof(*wargv));
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for (i = 0, p = conv->wbuff; i < argc; ++i) {
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if (!argv[i]) { /* don't pass null pointers to mbsrtowcs */
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wargv[i] = NULL;
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continue;
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} else {
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wargv[i] = p;
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memset(&state, 0, sizeof(mbstate_t));
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bytes = (ssize_t)mbsrtowcs(p, argv + i, bufspace, &state);
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}
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if (bytes == -1) {
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el_free(wargv);
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return NULL;
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} else
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bytes++; /* include '\0' in the count */
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bufspace -= (size_t)bytes;
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p += bytes;
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}
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return wargv;
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}
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protected size_t
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ct_enc_width(Char c)
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{
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/* UTF-8 encoding specific values */
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if (c < 0x80)
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return 1;
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else if (c < 0x0800)
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return 2;
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else if (c < 0x10000)
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return 3;
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else if (c < 0x110000)
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return 4;
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else
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return 0; /* not a valid codepoint */
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}
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protected ssize_t
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ct_encode_char(char *dst, size_t len, Char c, mbstate_t *state)
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{
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ssize_t l = 0;
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if (len < ct_enc_width(c))
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return -1;
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l = wcrtomb(dst, c, state);
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if (l < 0) {
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memset (state, 0, sizeof (mbstate_t));
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l = 0;
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}
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return l;
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}
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#endif
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protected const Char *
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ct_visual_string(const Char *s)
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{
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static Char *buff = NULL;
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static size_t buffsize = 0;
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void *p;
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Char *dst;
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ssize_t used = 0;
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if (!s)
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return NULL;
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if (!buff) {
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buffsize = CT_BUFSIZ;
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buff = el_malloc(buffsize * sizeof(*buff));
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}
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dst = buff;
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while (*s) {
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used = ct_visual_char(dst, buffsize - (size_t)(dst - buff), *s);
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if (used == -1) { /* failed to encode, need more buffer space */
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used = dst - buff;
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buffsize += CT_BUFSIZ;
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p = el_realloc(buff, buffsize * sizeof(*buff));
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if (p == NULL)
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goto out;
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buff = p;
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dst = buff + used;
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/* don't increment s here - we want to retry it! */
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}
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else
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++s;
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dst += used;
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}
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if (dst >= (buff + buffsize)) { /* sigh */
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buffsize += 1;
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p = el_realloc(buff, buffsize * sizeof(*buff));
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if (p == NULL)
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goto out;
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buff = p;
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dst = buff + buffsize - 1;
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}
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*dst = 0;
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return buff;
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out:
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el_free(buff);
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buffsize = 0;
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return NULL;
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}
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protected int
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ct_visual_width(Char c)
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{
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int t = ct_chr_class(c);
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switch (t) {
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case CHTYPE_ASCIICTL:
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return 2; /* ^@ ^? etc. */
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case CHTYPE_TAB:
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return 1; /* Hmm, this really need to be handled outside! */
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case CHTYPE_NL:
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return 0; /* Should this be 1 instead? */
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#ifdef WIDECHAR
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case CHTYPE_PRINT:
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return wcwidth(c);
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case CHTYPE_NONPRINT:
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if (c > 0xffff) /* prefer standard 4-byte display over 5-byte */
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return 8; /* \U+12345 */
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else
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return 7; /* \U+1234 */
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#else
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case CHTYPE_PRINT:
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return 1;
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case CHTYPE_NONPRINT:
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return 4; /* \123 */
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#endif
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default:
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return 0; /* should not happen */
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}
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}
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protected ssize_t
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ct_visual_char(Char *dst, size_t len, Char c)
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{
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int t = ct_chr_class(c);
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switch (t) {
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case CHTYPE_TAB:
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case CHTYPE_NL:
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case CHTYPE_ASCIICTL:
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if (len < 2)
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return -1; /* insufficient space */
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*dst++ = '^';
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if (c == '\177')
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*dst = '?'; /* DEL -> ^? */
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else
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*dst = c | 0100; /* uncontrolify it */
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return 2;
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case CHTYPE_PRINT:
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if (len < 1)
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return -1; /* insufficient space */
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*dst = c;
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return 1;
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case CHTYPE_NONPRINT:
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/* we only use single-width glyphs for display,
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* so this is right */
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if ((ssize_t)len < ct_visual_width(c))
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return -1; /* insufficient space */
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#ifdef WIDECHAR
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*dst++ = '\\';
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*dst++ = 'U';
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*dst++ = '+';
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#define tohexdigit(v) "0123456789ABCDEF"[v]
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if (c > 0xffff) /* prefer standard 4-byte display over 5-byte */
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*dst++ = tohexdigit(((unsigned int) c >> 16) & 0xf);
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*dst++ = tohexdigit(((unsigned int) c >> 12) & 0xf);
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*dst++ = tohexdigit(((unsigned int) c >> 8) & 0xf);
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*dst++ = tohexdigit(((unsigned int) c >> 4) & 0xf);
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*dst = tohexdigit(((unsigned int) c ) & 0xf);
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return c > 0xffff ? 8 : 7;
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#else
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*dst++ = '\\';
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#define tooctaldigit(v) ((v) + '0')
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*dst++ = tooctaldigit(((unsigned int) c >> 6) & 0x7);
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*dst++ = tooctaldigit(((unsigned int) c >> 3) & 0x7);
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*dst++ = tooctaldigit(((unsigned int) c ) & 0x7);
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#endif
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/*FALLTHROUGH*/
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/* these two should be handled outside this function */
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default: /* we should never hit the default */
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return 0;
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}
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}
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protected int
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ct_chr_class(Char c)
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{
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if (c == '\t')
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return CHTYPE_TAB;
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else if (c == '\n')
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return CHTYPE_NL;
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else if (IsASCII(c) && Iscntrl(c))
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return CHTYPE_ASCIICTL;
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else if (Isprint(c))
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return CHTYPE_PRINT;
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else
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return CHTYPE_NONPRINT;
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}
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