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298 lines
9.6 KiB
C
298 lines
9.6 KiB
C
/*
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* Unicode routines for use inside the server
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*
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* Copyright (C) 1999 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <ctype.h>
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#include <stdio.h>
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#include "request.h"
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#include "unicode.h"
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/* number of following bytes in sequence based on first byte value (for bytes above 0x7f) */
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static const char utf8_length[128] =
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{
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x80-0x8f */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x90-0x9f */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xa0-0xaf */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xb0-0xbf */
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0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xc0-0xcf */
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xd0-0xdf */
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2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* 0xe0-0xef */
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3,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0 /* 0xf0-0xff */
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};
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/* first byte mask depending on UTF-8 sequence length */
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static const unsigned char utf8_mask[4] = { 0x7f, 0x1f, 0x0f, 0x07 };
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/* minimum Unicode value depending on UTF-8 sequence length */
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static const unsigned int utf8_minval[4] = { 0x0, 0x80, 0x800, 0x10000 };
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static unsigned short *casemap;
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static inline char to_hex( char ch )
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{
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if (isdigit(ch)) return ch - '0';
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return tolower(ch) - 'a' + 10;
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}
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static inline WCHAR to_lower( WCHAR ch )
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{
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return ch + casemap[casemap[casemap[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0x0f)];
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}
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int memicmp_strW( const WCHAR *str1, const WCHAR *str2, data_size_t len )
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{
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int ret = 0;
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for (len /= sizeof(WCHAR); len; str1++, str2++, len--)
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if ((ret = to_lower(*str1) - to_lower(*str2))) break;
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return ret;
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}
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unsigned int hash_strW( const WCHAR *str, data_size_t len, unsigned int hash_size )
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{
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unsigned int i, hash = 0;
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for (i = 0; i < len / sizeof(WCHAR); i++) hash = hash * 65599 + to_lower( str[i] );
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return hash % hash_size;
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}
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WCHAR *ascii_to_unicode_str( const char *str, struct unicode_str *ret )
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{
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data_size_t i, len = strlen(str);
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WCHAR *p;
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ret->len = len * sizeof(WCHAR);
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ret->str = p = mem_alloc( ret->len );
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if (p) for (i = 0; i < len; i++) p[i] = (unsigned char)str[i];
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return p;
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}
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/* parse an escaped string back into Unicode */
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/* return the number of chars read from the input, or -1 on output overflow */
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int parse_strW( WCHAR *buffer, data_size_t *len, const char *src, char endchar )
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{
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WCHAR *dest = buffer;
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WCHAR *end = buffer + *len / sizeof(WCHAR);
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const char *p = src;
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unsigned char ch;
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while (*p && *p != endchar && dest < end)
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{
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if (*p == '\\')
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{
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p++;
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if (!*p) break;
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switch(*p)
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{
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case 'a': *dest++ = '\a'; p++; continue;
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case 'b': *dest++ = '\b'; p++; continue;
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case 'e': *dest++ = '\e'; p++; continue;
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case 'f': *dest++ = '\f'; p++; continue;
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case 'n': *dest++ = '\n'; p++; continue;
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case 'r': *dest++ = '\r'; p++; continue;
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case 't': *dest++ = '\t'; p++; continue;
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case 'v': *dest++ = '\v'; p++; continue;
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case 'x': /* hex escape */
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p++;
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if (!isxdigit(*p)) *dest = 'x';
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else
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{
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*dest = to_hex(*p++);
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if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
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if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
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if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
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}
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dest++;
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continue;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7': /* octal escape */
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*dest = *p++ - '0';
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if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
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if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
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dest++;
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continue;
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}
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/* unrecognized escape: fall through to normal char handling */
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}
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ch = *p++;
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if (ch < 0x80) *dest++ = ch;
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else /* parse utf8 char */
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{
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int charlen = utf8_length[ch-0x80];
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unsigned int res = ch & utf8_mask[charlen];
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switch(charlen)
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{
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case 3:
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if ((ch = *p ^ 0x80) >= 0x40) break;
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res = (res << 6) | ch;
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p++;
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case 2:
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if ((ch = *p ^ 0x80) >= 0x40) break;
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res = (res << 6) | ch;
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p++;
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case 1:
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if ((ch = *p ^ 0x80) >= 0x40) break;
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res = (res << 6) | ch;
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p++;
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if (res < utf8_minval[charlen]) break;
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if (res > 0x10ffff) break;
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if (res <= 0xffff) *dest++ = res;
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else /* we need surrogates */
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{
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res -= 0x10000;
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*dest++ = 0xd800 | (res >> 10);
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if (dest < end) *dest++ = 0xdc00 | (res & 0x3ff);
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}
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continue;
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}
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/* ignore invalid char */
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}
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}
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if (dest >= end) return -1; /* overflow */
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*dest++ = 0;
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if (!*p) return -1; /* delimiter not found */
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*len = (dest - buffer) * sizeof(WCHAR);
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return p + 1 - src;
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}
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/* dump a Unicode string with proper escaping */
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int dump_strW( const WCHAR *str, data_size_t len, FILE *f, const char escape[2] )
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{
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static const char escapes[32] = ".......abtnvfr.............e....";
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char buffer[256];
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char *pos = buffer;
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int count = 0;
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for (len /= sizeof(WCHAR); len; str++, len--)
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{
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if (pos > buffer + sizeof(buffer) - 8)
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{
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fwrite( buffer, pos - buffer, 1, f );
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count += pos - buffer;
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pos = buffer;
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}
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if (*str > 127) /* hex escape */
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{
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if (len > 1 && str[1] < 128 && isxdigit((char)str[1]))
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pos += sprintf( pos, "\\x%04x", *str );
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else
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pos += sprintf( pos, "\\x%x", *str );
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continue;
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}
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if (*str < 32) /* octal or C escape */
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{
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if (!*str && len == 1) continue; /* do not output terminating NULL */
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if (escapes[*str] != '.')
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pos += sprintf( pos, "\\%c", escapes[*str] );
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else if (len > 1 && str[1] >= '0' && str[1] <= '7')
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pos += sprintf( pos, "\\%03o", *str );
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else
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pos += sprintf( pos, "\\%o", *str );
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continue;
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}
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if (*str == '\\' || *str == escape[0] || *str == escape[1]) *pos++ = '\\';
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*pos++ = *str;
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}
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fwrite( buffer, pos - buffer, 1, f );
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count += pos - buffer;
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return count;
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}
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static char *get_nls_dir(void)
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{
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char *p, *dir, *ret;
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const char *nlsdir = BIN_TO_NLSDIR;
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#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
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dir = realpath( "/proc/self/exe", NULL );
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#elif defined (__FreeBSD__) || defined(__DragonFly__)
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dir = realpath( "/proc/curproc/file", NULL );
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#else
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dir = realpath( server_argv0, NULL );
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#endif
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if (!dir) return NULL;
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if (!(p = strrchr( dir, '/' )))
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{
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free( dir );
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return NULL;
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}
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*(++p) = 0;
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if (p > dir + 8 && !strcmp( p - 8, "/server/" )) nlsdir = "../nls"; /* inside build tree */
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if ((ret = malloc( strlen(dir) + strlen( nlsdir ) + 1 )))
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{
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strcpy( ret, dir );
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strcat( ret, nlsdir );
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}
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free( dir );
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return ret;
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}
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/* load the case mapping table */
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void load_intl_file(void)
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{
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static const char *nls_dirs[] = { NULL, NLSDIR, "/usr/local/share/wine/nls", "/usr/share/wine/nls" };
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unsigned int i, offset, size;
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unsigned short data;
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char *path;
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int unix_fd = -1;
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nls_dirs[0] = get_nls_dir();
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for (i = 0; i < ARRAY_SIZE( nls_dirs ); i++)
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{
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if (!nls_dirs[i]) continue;
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if (!(path = malloc( strlen(nls_dirs[i]) + sizeof("/l_intl.nls" )))) continue;
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strcpy( path, nls_dirs[i] );
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strcat( path, "/l_intl.nls" );
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if ((unix_fd = open( path, O_RDONLY )) != -1) break;
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free( path );
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}
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if (unix_fd == -1) fatal_error( "failed to load l_intl.nls\n" );
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/* read initial offset */
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if (pread( unix_fd, &data, sizeof(data), 0 ) != sizeof(data) || !data) goto failed;
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offset = data;
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/* read size of uppercase table */
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if (pread( unix_fd, &data, sizeof(data), offset * 2 ) != sizeof(data) || !data) goto failed;
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offset += data;
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/* read size of lowercase table */
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if (pread( unix_fd, &data, sizeof(data), offset * 2 ) != sizeof(data) || !data) goto failed;
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offset++;
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size = data - 1;
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/* read lowercase table */
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if (!(casemap = malloc( size * 2 ))) goto failed;
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if (pread( unix_fd, casemap, size * 2, offset * 2 ) != size * 2) goto failed;
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close( unix_fd );
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free( path );
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return;
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failed:
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fatal_error( "invalid format for casemap table %s\n", path );
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}
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