aa167556cd
Off: function old new delta unicode_bidi_isrtl - 55 +55 isrtl_str 51 65 +14 unicode_isrtl 55 - -55 read_line_input 5003 4937 -66 ------------------------------------------------------------------------------ (add/remove: 1/4 grow/shrink: 1/1 up/down: 69/-121) Total: -52 bytes On: function old new delta static.neutral_b - 320 +320 static.neutral_p - 142 +142 unicode_bidi_isrtl - 55 +55 unicode_bidi_is_neutral_wchar - 55 +55 isrtl_str 51 59 +8 unicode_isrtl 55 - -55 read_line_input 5003 4937 -66 ------------------------------------------------------------------------------ (add/remove: 4/4 grow/shrink: 1/1 up/down: 580/-121) Total: 459 bytes Signed-off-by: Tomas Heinrich <heinrich.tomas@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
723 lines
16 KiB
C
723 lines
16 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Unicode support routines.
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*
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* Copyright (C) 2009 Denys Vlasenko
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*
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* Licensed under GPL version 2, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#include "unicode.h"
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/* If it's not #defined as a constant in unicode.h... */
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#ifndef unicode_status
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uint8_t unicode_status;
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#endif
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/* This file is compiled only if FEATURE_ASSUME_UNICODE is on.
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* We check other options and decide whether to use libc support
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* via locale, or use our own logic:
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*/
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#if ENABLE_LOCALE_SUPPORT
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/* Unicode support using libc locale support. */
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void FAST_FUNC init_unicode(void)
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{
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/* In unicode, this is a one character string */
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static const char unicode_0x394[] = { 0xce, 0x94, 0 };
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if (unicode_status != UNICODE_UNKNOWN)
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return;
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unicode_status = unicode_strlen(unicode_0x394) == 1 ? UNICODE_ON : UNICODE_OFF;
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}
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#else
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/* Homegrown Unicode support. It knows only C and Unicode locales. */
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# if ENABLE_FEATURE_CHECK_UNICODE_IN_ENV
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void FAST_FUNC init_unicode(void)
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{
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char *lang;
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if (unicode_status != UNICODE_UNKNOWN)
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return;
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unicode_status = UNICODE_OFF;
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lang = getenv("LANG");
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if (!lang || !(strstr(lang, ".utf") || strstr(lang, ".UTF")))
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return;
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unicode_status = UNICODE_ON;
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}
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# endif
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static size_t wcrtomb_internal(char *s, wchar_t wc)
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{
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int n, i;
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uint32_t v = wc;
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if (v <= 0x7f) {
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*s = v;
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return 1;
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}
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/* RFC 3629 says that Unicode ends at 10FFFF,
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* but we cover entire 32 bits */
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/* 4000000-FFFFFFFF -> 111111tt 10tttttt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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/* 200000-3FFFFFF -> 111110tt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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/* 10000-1FFFFF -> 11110zzz 10zzyyyy 10yyyyxx 10xxxxxx */
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/* 800-FFFF -> 1110yyyy 10yyyyxx 10xxxxxx */
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/* 80-7FF -> 110yyyxx 10xxxxxx */
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/* How many bytes do we need? */
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n = 2;
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/* (0x80000000+ would result in n = 7, limiting n to 6) */
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while (v >= 0x800 && n < 6) {
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v >>= 5;
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n++;
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}
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/* Fill bytes n-1..1 */
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i = n;
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while (--i) {
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s[i] = (wc & 0x3f) | 0x80;
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wc >>= 6;
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}
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/* Fill byte 0 */
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s[0] = wc | (uint8_t)(0x3f00 >> n);
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return n;
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}
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size_t FAST_FUNC wcrtomb(char *s, wchar_t wc, mbstate_t *ps UNUSED_PARAM)
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{
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if (unicode_status != UNICODE_ON) {
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*s = wc;
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return 1;
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}
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return wcrtomb_internal(s, wc);
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}
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size_t FAST_FUNC wcstombs(char *dest, const wchar_t *src, size_t n)
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{
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size_t org_n = n;
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if (unicode_status != UNICODE_ON) {
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while (n) {
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wchar_t c = *src++;
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*dest++ = c;
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if (c == 0)
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break;
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n--;
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}
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return org_n - n;
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}
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while (n >= MB_CUR_MAX) {
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wchar_t wc = *src++;
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size_t len = wcrtomb_internal(dest, wc);
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if (wc == L'\0')
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return org_n - n;
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dest += len;
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n -= len;
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}
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while (n) {
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char tbuf[MB_CUR_MAX];
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wchar_t wc = *src++;
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size_t len = wcrtomb_internal(tbuf, wc);
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if (len > n)
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len = n;
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memcpy(dest, tbuf, len);
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if (wc == L'\0')
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return org_n - n;
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dest += len;
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n -= len;
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}
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return org_n - n;
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}
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#define ERROR_WCHAR (~(wchar_t)0)
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static const char *mbstowc_internal(wchar_t *res, const char *src)
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{
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int bytes;
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unsigned c = (unsigned char) *src++;
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if (c <= 0x7f) {
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*res = c;
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return src;
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}
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/* 80-7FF -> 110yyyxx 10xxxxxx */
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/* 800-FFFF -> 1110yyyy 10yyyyxx 10xxxxxx */
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/* 10000-1FFFFF -> 11110zzz 10zzyyyy 10yyyyxx 10xxxxxx */
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/* 200000-3FFFFFF -> 111110tt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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/* 4000000-FFFFFFFF -> 111111tt 10tttttt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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bytes = 0;
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do {
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c <<= 1;
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bytes++;
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} while ((c & 0x80) && bytes < 6);
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if (bytes == 1) {
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/* A bare "continuation" byte. Say, 80 */
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*res = ERROR_WCHAR;
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return src;
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}
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c = (uint8_t)(c) >> bytes;
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while (--bytes) {
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unsigned ch = (unsigned char) *src;
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if ((ch & 0xc0) != 0x80) {
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/* Missing "continuation" byte. Example: e0 80 */
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*res = ERROR_WCHAR;
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return src;
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}
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c = (c << 6) + (ch & 0x3f);
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src++;
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}
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/* TODO */
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/* Need to check that c isn't produced by overlong encoding */
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/* Example: 11000000 10000000 converts to NUL */
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/* 11110000 10000000 10000100 10000000 converts to 0x100 */
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/* correct encoding: 11000100 10000000 */
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if (c <= 0x7f) { /* crude check */
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*res = ERROR_WCHAR;
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return src;
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}
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*res = c;
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return src;
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}
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size_t FAST_FUNC mbstowcs(wchar_t *dest, const char *src, size_t n)
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{
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size_t org_n = n;
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if (unicode_status != UNICODE_ON) {
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while (n) {
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unsigned char c = *src++;
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if (dest)
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*dest++ = c;
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if (c == 0)
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break;
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n--;
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}
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return org_n - n;
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}
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while (n) {
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wchar_t wc;
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src = mbstowc_internal(&wc, src);
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if (wc == ERROR_WCHAR) /* error */
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return (size_t) -1L;
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if (dest)
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*dest++ = wc;
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if (wc == 0) /* end-of-string */
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break;
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n--;
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}
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return org_n - n;
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}
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int FAST_FUNC iswspace(wint_t wc)
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{
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return (unsigned)wc <= 0x7f && isspace(wc);
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}
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int FAST_FUNC iswalnum(wint_t wc)
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{
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return (unsigned)wc <= 0x7f && isalnum(wc);
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}
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int FAST_FUNC iswpunct(wint_t wc)
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{
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return (unsigned)wc <= 0x7f && ispunct(wc);
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}
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#include "unicode_wcwidth.c"
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# if ENABLE_UNICODE_BIDI_SUPPORT
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int FAST_FUNC unicode_bidi_isrtl(wint_t wc)
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{
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/* ranges taken from
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* http://www.unicode.org/Public/5.2.0/ucd/extracted/DerivedBidiClass.txt
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* Bidi_Class=Left_To_Right | Bidi_Class=Arabic_Letter
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*/
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static const struct interval rtl_b[] = {
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# define BIG_(a,b) { a, b },
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# define PAIR(a,b)
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# define ARRAY \
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PAIR(0x0590, 0x0590) \
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PAIR(0x05BE, 0x05BE) \
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PAIR(0x05C0, 0x05C0) \
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PAIR(0x05C3, 0x05C3) \
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PAIR(0x05C6, 0x05C6) \
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BIG_(0x05C8, 0x05FF) \
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PAIR(0x0604, 0x0605) \
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PAIR(0x0608, 0x0608) \
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PAIR(0x060B, 0x060B) \
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PAIR(0x060D, 0x060D) \
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BIG_(0x061B, 0x064A) \
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PAIR(0x065F, 0x065F) \
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PAIR(0x066D, 0x066F) \
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BIG_(0x0671, 0x06D5) \
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PAIR(0x06E5, 0x06E6) \
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PAIR(0x06EE, 0x06EF) \
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BIG_(0x06FA, 0x070E) \
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PAIR(0x0710, 0x0710) \
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BIG_(0x0712, 0x072F) \
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BIG_(0x074B, 0x07A5) \
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BIG_(0x07B1, 0x07EA) \
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PAIR(0x07F4, 0x07F5) \
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BIG_(0x07FA, 0x0815) \
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PAIR(0x081A, 0x081A) \
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PAIR(0x0824, 0x0824) \
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PAIR(0x0828, 0x0828) \
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BIG_(0x082E, 0x08FF) \
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PAIR(0x200F, 0x200F) \
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PAIR(0x202B, 0x202B) \
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PAIR(0x202E, 0x202E) \
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BIG_(0xFB1D, 0xFB1D) \
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BIG_(0xFB1F, 0xFB28) \
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BIG_(0xFB2A, 0xFD3D) \
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BIG_(0xFD40, 0xFDCF) \
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BIG_(0xFDC8, 0xFDCF) \
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BIG_(0xFDF0, 0xFDFC) \
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BIG_(0xFDFE, 0xFDFF) \
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BIG_(0xFE70, 0xFEFE)
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/* Probably not necessary
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{0x10800, 0x1091E},
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{0x10920, 0x10A00},
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{0x10A04, 0x10A04},
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{0x10A07, 0x10A0B},
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{0x10A10, 0x10A37},
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{0x10A3B, 0x10A3E},
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{0x10A40, 0x10A7F},
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{0x10B36, 0x10B38},
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{0x10B40, 0x10E5F},
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{0x10E7F, 0x10FFF},
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{0x1E800, 0x1EFFF}
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*/
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ARRAY
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# undef BIG_
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# undef PAIR
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};
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# define BIG_(a,b)
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# define PAIR(a,b) (a << 2) | (b-a),
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static const uint16_t rtl_p[] = { ARRAY };
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# undef BIG_
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# undef PAIR
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# define BIG_(a,b) char big_##a[b < 0x4000 && b-a <= 3 ? -1 : 1];
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# define PAIR(a,b) char pair##a[b >= 0x4000 || b-a > 3 ? -1 : 1];
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struct CHECK { ARRAY };
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# undef BIG_
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# undef PAIR
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# undef ARRAY
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if (in_interval_table(wc, rtl_b, ARRAY_SIZE(rtl_b) - 1))
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return 1;
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if (in_uint16_table(wc, rtl_p, ARRAY_SIZE(rtl_p) - 1))
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return 1;
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return 0;
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}
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# if ENABLE_UNICODE_NEUTRAL_TABLE
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int FAST_FUNC unicode_bidi_is_neutral_wchar(wint_t wc)
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{
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/* ranges taken from
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* http://www.unicode.org/Public/5.2.0/ucd/extracted/DerivedBidiClass.txt
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* Bidi_Classes: Paragraph_Separator, Segment_Separator,
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* White_Space, Other_Neutral, European_Number, European_Separator,
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* European_Terminator, Arabic_Number, Common_Separator
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*/
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static const struct interval neutral_b[] = {
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# define BIG_(a,b) { a, b },
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# define PAIR(a,b)
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# define ARRAY \
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BIG_(0x0009, 0x000D) \
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BIG_(0x001C, 0x0040) \
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BIG_(0x005B, 0x0060) \
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PAIR(0x007B, 0x007E) \
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PAIR(0x0085, 0x0085) \
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BIG_(0x00A0, 0x00A9) \
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PAIR(0x00AB, 0x00AC) \
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BIG_(0x00AE, 0x00B4) \
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PAIR(0x00B6, 0x00B9) \
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BIG_(0x00BB, 0x00BF) \
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PAIR(0x00D7, 0x00D7) \
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PAIR(0x00F7, 0x00F7) \
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PAIR(0x02B9, 0x02BA) \
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BIG_(0x02C2, 0x02CF) \
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BIG_(0x02D2, 0x02DF) \
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BIG_(0x02E5, 0x02FF) \
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PAIR(0x0374, 0x0375) \
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PAIR(0x037E, 0x037E) \
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PAIR(0x0384, 0x0385) \
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PAIR(0x0387, 0x0387) \
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PAIR(0x03F6, 0x03F6) \
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PAIR(0x058A, 0x058A) \
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PAIR(0x0600, 0x0603) \
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PAIR(0x0606, 0x0607) \
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PAIR(0x0609, 0x060A) \
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PAIR(0x060C, 0x060C) \
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PAIR(0x060E, 0x060F) \
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BIG_(0x0660, 0x066C) \
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PAIR(0x06DD, 0x06DD) \
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PAIR(0x06E9, 0x06E9) \
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BIG_(0x06F0, 0x06F9) \
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PAIR(0x07F6, 0x07F9) \
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PAIR(0x09F2, 0x09F3) \
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PAIR(0x09FB, 0x09FB) \
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PAIR(0x0AF1, 0x0AF1) \
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BIG_(0x0BF3, 0x0BFA) \
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BIG_(0x0C78, 0x0C7E) \
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PAIR(0x0CF1, 0x0CF2) \
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PAIR(0x0E3F, 0x0E3F) \
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PAIR(0x0F3A, 0x0F3D) \
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BIG_(0x1390, 0x1400) \
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PAIR(0x1680, 0x1680) \
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PAIR(0x169B, 0x169C) \
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PAIR(0x17DB, 0x17DB) \
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BIG_(0x17F0, 0x17F9) \
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BIG_(0x1800, 0x180A) \
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PAIR(0x180E, 0x180E) \
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PAIR(0x1940, 0x1940) \
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PAIR(0x1944, 0x1945) \
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BIG_(0x19DE, 0x19FF) \
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PAIR(0x1FBD, 0x1FBD) \
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PAIR(0x1FBF, 0x1FC1) \
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PAIR(0x1FCD, 0x1FCF) \
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PAIR(0x1FDD, 0x1FDF) \
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PAIR(0x1FED, 0x1FEF) \
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PAIR(0x1FFD, 0x1FFE) \
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BIG_(0x2000, 0x200A) \
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BIG_(0x2010, 0x2029) \
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BIG_(0x202F, 0x205F) \
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PAIR(0x2070, 0x2070) \
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BIG_(0x2074, 0x207E) \
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BIG_(0x2080, 0x208E) \
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BIG_(0x20A0, 0x20B8) \
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PAIR(0x2100, 0x2101) \
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PAIR(0x2103, 0x2106) \
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PAIR(0x2108, 0x2109) \
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PAIR(0x2114, 0x2114) \
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PAIR(0x2116, 0x2118) \
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BIG_(0x211E, 0x2123) \
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PAIR(0x2125, 0x2125) \
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PAIR(0x2127, 0x2127) \
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PAIR(0x2129, 0x2129) \
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PAIR(0x212E, 0x212E) \
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PAIR(0x213A, 0x213B) \
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BIG_(0x2140, 0x2144) \
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PAIR(0x214A, 0x214D) \
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BIG_(0x2150, 0x215F) \
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PAIR(0x2189, 0x2189) \
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BIG_(0x2190, 0x2335) \
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BIG_(0x237B, 0x2394) \
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BIG_(0x2396, 0x23E8) \
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BIG_(0x2400, 0x2426) \
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BIG_(0x2440, 0x244A) \
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BIG_(0x2460, 0x249B) \
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BIG_(0x24EA, 0x26AB) \
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BIG_(0x26AD, 0x26CD) \
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BIG_(0x26CF, 0x26E1) \
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PAIR(0x26E3, 0x26E3) \
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BIG_(0x26E8, 0x26FF) \
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PAIR(0x2701, 0x2704) \
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PAIR(0x2706, 0x2709) \
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BIG_(0x270C, 0x2727) \
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BIG_(0x2729, 0x274B) \
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PAIR(0x274D, 0x274D) \
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PAIR(0x274F, 0x2752) \
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BIG_(0x2756, 0x275E) \
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BIG_(0x2761, 0x2794) \
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BIG_(0x2798, 0x27AF) \
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BIG_(0x27B1, 0x27BE) \
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BIG_(0x27C0, 0x27CA) \
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PAIR(0x27CC, 0x27CC) \
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BIG_(0x27D0, 0x27FF) \
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BIG_(0x2900, 0x2B4C) \
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BIG_(0x2B50, 0x2B59) \
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BIG_(0x2CE5, 0x2CEA) \
|
|
BIG_(0x2CF9, 0x2CFF) \
|
|
BIG_(0x2E00, 0x2E99) \
|
|
BIG_(0x2E9B, 0x2EF3) \
|
|
BIG_(0x2F00, 0x2FD5) \
|
|
BIG_(0x2FF0, 0x2FFB) \
|
|
BIG_(0x3000, 0x3004) \
|
|
BIG_(0x3008, 0x3020) \
|
|
PAIR(0x3030, 0x3030) \
|
|
PAIR(0x3036, 0x3037) \
|
|
PAIR(0x303D, 0x303D) \
|
|
PAIR(0x303E, 0x303F) \
|
|
PAIR(0x309B, 0x309C) \
|
|
PAIR(0x30A0, 0x30A0) \
|
|
PAIR(0x30FB, 0x30FB) \
|
|
BIG_(0x31C0, 0x31E3) \
|
|
PAIR(0x321D, 0x321E) \
|
|
BIG_(0x3250, 0x325F) \
|
|
PAIR(0x327C, 0x327E) \
|
|
BIG_(0x32B1, 0x32BF) \
|
|
PAIR(0x32CC, 0x32CF) \
|
|
PAIR(0x3377, 0x337A) \
|
|
PAIR(0x33DE, 0x33DF) \
|
|
PAIR(0x33FF, 0x33FF) \
|
|
BIG_(0x4DC0, 0x4DFF) \
|
|
BIG_(0xA490, 0xA4C6) \
|
|
BIG_(0xA60D, 0xA60F) \
|
|
BIG_(0xA673, 0xA673) \
|
|
BIG_(0xA67E, 0xA67F) \
|
|
BIG_(0xA700, 0xA721) \
|
|
BIG_(0xA788, 0xA788) \
|
|
BIG_(0xA828, 0xA82B) \
|
|
BIG_(0xA838, 0xA839) \
|
|
BIG_(0xA874, 0xA877) \
|
|
BIG_(0xFB29, 0xFB29) \
|
|
BIG_(0xFD3E, 0xFD3F) \
|
|
BIG_(0xFDFD, 0xFDFD) \
|
|
BIG_(0xFE10, 0xFE19) \
|
|
BIG_(0xFE30, 0xFE52) \
|
|
BIG_(0xFE54, 0xFE66) \
|
|
BIG_(0xFE68, 0xFE6B) \
|
|
BIG_(0xFF01, 0xFF20) \
|
|
BIG_(0xFF3B, 0xFF40) \
|
|
BIG_(0xFF5B, 0xFF65) \
|
|
BIG_(0xFFE0, 0xFFE6) \
|
|
BIG_(0xFFE8, 0xFFEE) \
|
|
BIG_(0xFFF9, 0xFFFD)
|
|
/*
|
|
{0x10101, 0x10101},
|
|
{0x10140, 0x1019B},
|
|
{0x1091F, 0x1091F},
|
|
{0x10B39, 0x10B3F},
|
|
{0x10E60, 0x10E7E},
|
|
{0x1D200, 0x1D241},
|
|
{0x1D245, 0x1D245},
|
|
{0x1D300, 0x1D356},
|
|
{0x1D6DB, 0x1D6DB},
|
|
{0x1D715, 0x1D715},
|
|
{0x1D74F, 0x1D74F},
|
|
{0x1D789, 0x1D789},
|
|
{0x1D7C3, 0x1D7C3},
|
|
{0x1D7CE, 0x1D7FF},
|
|
{0x1F000, 0x1F02B},
|
|
{0x1F030, 0x1F093},
|
|
{0x1F100, 0x1F10A}
|
|
*/
|
|
ARRAY
|
|
# undef BIG_
|
|
# undef PAIR
|
|
};
|
|
# define BIG_(a,b)
|
|
# define PAIR(a,b) (a << 2) | (b-a),
|
|
static const uint16_t neutral_p[] = { ARRAY };
|
|
# undef BIG_
|
|
# undef PAIR
|
|
# define BIG_(a,b) char big_##a[b < 0x4000 && b-a <= 3 ? -1 : 1];
|
|
# define PAIR(a,b) char pair##a[b >= 0x4000 || b-a > 3 ? -1 : 1];
|
|
struct CHECK { ARRAY };
|
|
# undef BIG_
|
|
# undef PAIR
|
|
# undef ARRAY
|
|
|
|
if (in_interval_table(wc, neutral_b, ARRAY_SIZE(neutral_b) - 1))
|
|
return 1;
|
|
if (in_uint16_table(wc, neutral_p, ARRAY_SIZE(neutral_p) - 1))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
# endif
|
|
|
|
# endif /* UNICODE_BIDI_SUPPORT */
|
|
|
|
#endif /* Homegrown Unicode support */
|
|
|
|
|
|
/* The rest is mostly same for libc and for "homegrown" support */
|
|
|
|
size_t FAST_FUNC unicode_strlen(const char *string)
|
|
{
|
|
size_t width = mbstowcs(NULL, string, INT_MAX);
|
|
if (width == (size_t)-1L)
|
|
return strlen(string);
|
|
return width;
|
|
}
|
|
|
|
static char* FAST_FUNC unicode_conv_to_printable2(uni_stat_t *stats, const char *src, unsigned width, int flags)
|
|
{
|
|
char *dst;
|
|
unsigned dst_len;
|
|
unsigned uni_count;
|
|
unsigned uni_width;
|
|
|
|
if (unicode_status != UNICODE_ON) {
|
|
char *d;
|
|
if (flags & UNI_FLAG_PAD) {
|
|
d = dst = xmalloc(width + 1);
|
|
while ((int)--width >= 0) {
|
|
unsigned char c = *src;
|
|
if (c == '\0') {
|
|
do
|
|
*d++ = ' ';
|
|
while ((int)--width >= 0);
|
|
break;
|
|
}
|
|
*d++ = (c >= ' ' && c < 0x7f) ? c : '?';
|
|
src++;
|
|
}
|
|
*d = '\0';
|
|
} else {
|
|
d = dst = xstrndup(src, width);
|
|
while (*d) {
|
|
unsigned char c = *d;
|
|
if (c < ' ' || c >= 0x7f)
|
|
*d = '?';
|
|
d++;
|
|
}
|
|
}
|
|
if (stats)
|
|
stats->byte_count = stats->unicode_count = (d - dst);
|
|
return dst;
|
|
}
|
|
|
|
dst = NULL;
|
|
uni_count = uni_width = 0;
|
|
dst_len = 0;
|
|
while (1) {
|
|
int w;
|
|
wchar_t wc;
|
|
|
|
#if ENABLE_LOCALE_SUPPORT
|
|
{
|
|
mbstate_t mbst = { 0 };
|
|
ssize_t rc = mbsrtowcs(&wc, &src, 1, &mbst);
|
|
/* If invalid sequence is seen: -1 is returned,
|
|
* src points to the invalid sequence, errno = EILSEQ.
|
|
* Else number of wchars (excluding terminating L'\0')
|
|
* written to dest is returned.
|
|
* If len (here: 1) non-L'\0' wchars stored at dest,
|
|
* src points to the next char to be converted.
|
|
* If string is completely converted: src = NULL.
|
|
*/
|
|
if (rc == 0) /* end-of-string */
|
|
break;
|
|
if (rc < 0) { /* error */
|
|
src++;
|
|
goto subst;
|
|
}
|
|
if (!iswprint(wc))
|
|
goto subst;
|
|
}
|
|
#else
|
|
src = mbstowc_internal(&wc, src);
|
|
/* src is advanced to next mb char
|
|
* wc == ERROR_WCHAR: invalid sequence is seen
|
|
* else: wc is set
|
|
*/
|
|
if (wc == ERROR_WCHAR) /* error */
|
|
goto subst;
|
|
if (wc == 0) /* end-of-string */
|
|
break;
|
|
#endif
|
|
if (CONFIG_LAST_SUPPORTED_WCHAR && wc > CONFIG_LAST_SUPPORTED_WCHAR)
|
|
goto subst;
|
|
w = wcwidth(wc);
|
|
if ((ENABLE_UNICODE_COMBINING_WCHARS && w < 0) /* non-printable wchar */
|
|
|| (!ENABLE_UNICODE_COMBINING_WCHARS && w <= 0)
|
|
|| (!ENABLE_UNICODE_WIDE_WCHARS && w > 1)
|
|
) {
|
|
subst:
|
|
wc = CONFIG_SUBST_WCHAR;
|
|
w = 1;
|
|
}
|
|
width -= w;
|
|
/* Note: if width == 0, we still may add more chars,
|
|
* they may be zero-width or combining ones */
|
|
if ((int)width < 0) {
|
|
/* can't add this wc, string would become longer than width */
|
|
width += w;
|
|
break;
|
|
}
|
|
|
|
uni_count++;
|
|
uni_width += w;
|
|
dst = xrealloc(dst, dst_len + MB_CUR_MAX);
|
|
#if ENABLE_LOCALE_SUPPORT
|
|
{
|
|
mbstate_t mbst = { 0 };
|
|
dst_len += wcrtomb(&dst[dst_len], wc, &mbst);
|
|
}
|
|
#else
|
|
dst_len += wcrtomb_internal(&dst[dst_len], wc);
|
|
#endif
|
|
}
|
|
|
|
/* Pad to remaining width */
|
|
if (flags & UNI_FLAG_PAD) {
|
|
dst = xrealloc(dst, dst_len + width + 1);
|
|
uni_count += width;
|
|
uni_width += width;
|
|
while ((int)--width >= 0) {
|
|
dst[dst_len++] = ' ';
|
|
}
|
|
}
|
|
dst[dst_len] = '\0';
|
|
if (stats) {
|
|
stats->byte_count = dst_len;
|
|
stats->unicode_count = uni_count;
|
|
stats->unicode_width = uni_width;
|
|
}
|
|
|
|
return dst;
|
|
}
|
|
char* FAST_FUNC unicode_conv_to_printable(uni_stat_t *stats, const char *src)
|
|
{
|
|
return unicode_conv_to_printable2(stats, src, INT_MAX, 0);
|
|
}
|
|
char* FAST_FUNC unicode_conv_to_printable_maxwidth(uni_stat_t *stats, const char *src, unsigned maxwidth)
|
|
{
|
|
return unicode_conv_to_printable2(stats, src, maxwidth, 0);
|
|
}
|
|
char* FAST_FUNC unicode_conv_to_printable_fixedwidth(uni_stat_t *stats, const char *src, unsigned width)
|
|
{
|
|
return unicode_conv_to_printable2(stats, src, width, UNI_FLAG_PAD);
|
|
}
|
|
|
|
#ifdef UNUSED
|
|
unsigned FAST_FUNC unicode_padding_to_width(unsigned width, const char *src)
|
|
{
|
|
if (unicode_status != UNICODE_ON) {
|
|
return width - strnlen(src, width);
|
|
}
|
|
|
|
while (1) {
|
|
int w;
|
|
wchar_t wc;
|
|
|
|
#if ENABLE_LOCALE_SUPPORT
|
|
{
|
|
mbstate_t mbst = { 0 };
|
|
ssize_t rc = mbsrtowcs(&wc, &src, 1, &mbst);
|
|
if (rc <= 0) /* error, or end-of-string */
|
|
return width;
|
|
}
|
|
#else
|
|
src = mbstowc_internal(&wc, src);
|
|
if (wc == ERROR_WCHAR || wc == 0) /* error, or end-of-string */
|
|
return width;
|
|
#endif
|
|
w = wcwidth(wc);
|
|
if (w < 0) /* non-printable wchar */
|
|
return width;
|
|
width -= w;
|
|
if ((int)width <= 0) /* string is longer than width */
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|