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/*
* Copyright 2005 John M Bell <jmb202@ecs.soton.ac.uk>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* UCS conversion tables and RISC OS-specific UTF-8 text handling
*/
#include <assert.h>
#include <limits.h>
#include <string.h>
#include <oslib/osbyte.h>
#include <oslib/territory.h>
#include "utils/config.h"
#include "riscos/ucstables.h"
#include "utils/log.h"
#include "utils/utf8.h"
#include "utils/utils.h"
/* Common values (ASCII) */
#define common \
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, \
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, \
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, \
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, \
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, \
96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111, \
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127 \
/* 0x8c->0x9F, used by many of the encodings */
#define common2 \
0x2026, 0x2122, 0x2030, 0x2022, 0x2018, 0x2019, 0x2039, 0x203a, \
0x201c, 0x201d, 0x201e, 0x2013, 0x2014, 0x2212, 0x0152, 0x0153, \
0x2020, 0x2021, 0xfb01, 0xfb02
static const int latin1_table[256] =
{
common,
0x20ac, 0x0174, 0x0175, -1, -1, 0x0176, 0x0177, -1, -1, -1, -1, -1,
common2,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
};
static const int latin2_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
common2,
0x00A0, 0x0104, 0x02D8, 0x0141, 0x00A4, 0x013D, 0x015A, 0x00A7,
0x00A8, 0x0160, 0x015E, 0x0164, 0x0179, 0x00AD, 0x017D, 0x017B,
0x00B0, 0x0105, 0x02DB, 0x0142, 0x00B4, 0x013E, 0x015B, 0x02C7,
0x00B8, 0x0161, 0x015F, 0x0165, 0x017A, 0x02DD, 0x017E, 0x017C,
0x0154, 0x00C1, 0x00C2, 0x0102, 0x00C4, 0x0139, 0x0106, 0x00C7,
0x010C, 0x00C9, 0x0118, 0x00CB, 0x011A, 0x00CD, 0x00CE, 0x010E,
0x0110, 0x0143, 0x0147, 0x00D3, 0x00D4, 0x0150, 0x00D6, 0x00D7,
0x0158, 0x016E, 0x00DA, 0x0170, 0x00DC, 0x00DD, 0x0162, 0x00DF,
0x0155, 0x00E1, 0x00E2, 0x0103, 0x00E4, 0x013A, 0x0107, 0x00E7,
0x010D, 0x00E9, 0x0119, 0x00EB, 0x011B, 0x00ED, 0x00EE, 0x010F,
0x0111, 0x0144, 0x0148, 0x00F3, 0x00F4, 0x0151, 0x00F6, 0x00F7,
0x0159, 0x016F, 0x00FA, 0x0171, 0x00FC, 0x00FD, 0x0163, 0x02D9
};
static const int latin3_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
common2,
0x00A0, 0x0126, 0x02D8, 0x00A3, 0x00A4, -1, 0x0124, 0x00A7,
0x00A8, 0x0130, 0x015E, 0x011E, 0x0134, 0x00AD, -1, 0x017B,
0x00B0, 0x0127, 0x00B2, 0x00B3, 0x00B4, 0x00B5, 0x0125, 0x00B7,
0x00B8, 0x0131, 0x015F, 0x011F, 0x0135, 0x00BD, -1, 0x017C,
0x00C0, 0x00C1, 0x00C2, -1, 0x00C4, 0x010A, 0x0108, 0x00C7,
0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF,
-1, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x0120, 0x00D6, 0x00D7,
0x011C, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x016C, 0x015C, 0x00DF,
0x00E0, 0x00E1, 0x00E2, -1, 0x00E4, 0x010B, 0x0109, 0x00E7,
0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
-1, 0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x0121, 0x00F6, 0x00F7,
0x011D, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x016D, 0x015D, 0x02D9
};
static const int latin4_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
common2,
0x00A0, 0x0104, 0x0138, 0x0156, 0x00A4, 0x0128, 0x013B, 0x00A7,
0x00A8, 0x0160, 0x0112, 0x0122, 0x0166, 0x00AD, 0x017D, 0x00AF,
0x00B0, 0x0105, 0x02DB, 0x0157, 0x00B4, 0x0129, 0x013C, 0x02C7,
0x00B8, 0x0161, 0x0113, 0x0123, 0x0167, 0x014A, 0x017E, 0x014B,
0x0100, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x012E,
0x010C, 0x00C9, 0x0118, 0x00CB, 0x0116, 0x00CD, 0x00CE, 0x012A,
0x0110, 0x0145, 0x014C, 0x0136, 0x00D4, 0x00D5, 0x00D6, 0x00D7,
0x00D8, 0x0172, 0x00DA, 0x00DB, 0x00DC, 0x0168, 0x016A, 0x00DF,
0x0101, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x012F,
0x010D, 0x00E9, 0x0119, 0x00EB, 0x0117, 0x00ED, 0x00EE, 0x012B,
0x0111, 0x0146, 0x014D, 0x0137, 0x00F4, 0x00F5, 0x00F6, 0x00F7,
0x00F8, 0x0173, 0x00FA, 0x00FB, 0x00FC, 0x0169, 0x016B, 0x02D9
};
static const int latin5_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
common2,
0x00A0, 0x00A1, 0x00A2, 0x00A3, 0x00A4, 0x00A5, 0x00A6, 0x00A7,
0x00A8, 0x00A9, 0x00AA, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x00AF,
0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5, 0x00B6, 0x00B7,
0x00B8, 0x00B9, 0x00BA, 0x00BB, 0x00BC, 0x00BD, 0x00BE, 0x00BF,
0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF,
0x011E, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x00D7,
0x00D8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x0130, 0x015E, 0x00DF,
0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7,
0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
0x011F, 0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x00F7,
0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x0131, 0x015F, 0x00FF
};
static const int latin6_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
common2,
0x00A0, 0x0104, 0x0112, 0x0122, 0x012A, 0x0128, 0x0136, 0x00A7,
0x013B, 0x0110, 0x0160, 0x0166, 0x017D, 0x00AD, 0x016A, 0x014A,
0x00B0, 0x0105, 0x0113, 0x0123, 0x012B, 0x0129, 0x0137, 0x00B7,
0x013C, 0x0111, 0x0161, 0x0167, 0x017E, 0x2015, 0x016B, 0x014B,
0x0100, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x012E,
0x010C, 0x00C9, 0x0118, 0x00CB, 0x0116, 0x00CD, 0x00CE, 0x00CF,
0x00D0, 0x0145, 0x014C, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x0168,
0x00D8, 0x0172, 0x00DA, 0x00DB, 0x00DC, 0x00DD, 0x00DE, 0x00DF,
0x0101, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x012F,
0x010D, 0x00E9, 0x0119, 0x00EB, 0x0117, 0x00ED, 0x00EE, 0x00EF,
0x00F0, 0x0146, 0x014D, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x0169,
0x00F8, 0x0173, 0x00FA, 0x00FB, 0x00FC, 0x00FD, 0x00FE, 0x0138
};
static const int latin7_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0x2026, 0x2122, 0x2030, 0x2022, 0x2018, -1, 0x2039, 0x203a,
-1, -1, -1, 0x2013, 0x2014, 0x2212, 0x0152, 0x0153,
0x2020, 0x2021, 0xfb01, 0xfb02,
0x00A0, 0x201D, 0x00A2, 0x00A3, 0x00A4, 0x201E, 0x00A6, 0x00A7,
0x00D8, 0x00A9, 0x0156, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x00C6,
0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x201C, 0x00B5, 0x00B6, 0x00B7,
0x00F8, 0x00B9, 0x0157, 0x00BB, 0x00BC, 0x00BD, 0x00BE, 0x00E6,
0x0104, 0x012E, 0x0100, 0x0106, 0x00C4, 0x00C5, 0x0118, 0x0112,
0x010C, 0x00C9, 0x0179, 0x0116, 0x0122, 0x0136, 0x012A, 0x013B,
0x0160, 0x0143, 0x0145, 0x00D3, 0x014C, 0x00D5, 0x00D6, 0x00D7,
0x0172, 0x0141, 0x015A, 0x016A, 0x00DC, 0x017B, 0x017D, 0x00DF,
0x0105, 0x012F, 0x0101, 0x0107, 0x00E4, 0x00E5, 0x0119, 0x0113,
0x010D, 0x00E9, 0x017A, 0x0117, 0x0123, 0x0137, 0x012B, 0x013C,
0x0161, 0x0144, 0x0146, 0x00F3, 0x014D, 0x00F5, 0x00F6, 0x00F7,
0x0173, 0x0142, 0x015B, 0x016B, 0x00FC, 0x017C, 0x017E, 0x2019
};
static const int latin8_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
common2,
0x00A0, 0x1E02, 0x1E03, 0x00A3, 0x010A, 0x010B, 0x1E0A, 0x00A7,
0x1E80, 0x00A9, 0x1E82, 0x1E0B, 0x1EF2, 0x00AD, 0x00AE, 0x0178,
0x1E1E, 0x1E1F, 0x0120, 0x0121, 0x1E40, 0x1E41, 0x00B6, 0x1E56,
0x1E81, 0x1E57, 0x1E83, 0x1E60, 0x1EF3, 0x1E84, 0x1E85, 0x1E61,
0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF,
0x0174, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x1E6A,
0x00D8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x00DD, 0x0176, 0x00DF,
0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7,
0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
0x0175, 0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x1E6B,
0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x00FD, 0x0177, 0x00FF
};
static const int latin9_table[256] =
{
common,
-1, 0x0174, 0x0175, -1, -1, 0x0176, 0x0177, -1, -1, -1, -1, -1,
0x2026, 0x2122, 0x2030, 0x2022, 0x2018, 0x2019, 0x2039, 0x203a,
0x201c, 0x201d, 0x201e, 0x2013, 0x2014, 0x2212, -1, -1,
0x2020, 0x2021, 0xfb01, 0xfb02,
0x00A0, 0x00A1, 0x00A2, 0x00A3, 0x20AC, 0x00A5, 0x0160, 0x00A7,
0x0161, 0x00A9, 0x00AA, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x00AF,
0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x017D, 0x00B5, 0x00B6, 0x00B7,
0x017E, 0x00B9, 0x00BA, 0x00BB, 0x0152, 0x0153, 0x0178, 0x00BF,
0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF,
0x00D0, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x00D7,
0x00D8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x00DD, 0x00DE, 0x00DF,
0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7,
0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
0x00F0, 0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x00F7,
0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x00FD, 0x00FE, 0x00FF
};
static const int latin10_table[256] =
{
common,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0x2026, 0x2122, 0x2030, 0x2022, 0x2018, 0x2019, 0x2039, 0x203a,
0x201c, -1, -1, 0x2013, 0x2014, 0x2212, -1, -1,
0x2020, 0x2021, 0xfb01, 0xfb02,
0x00A0, 0x0104, 0x0105, 0x0141, 0x20AC, 0x201E, 0x0160, 0x00a7,
0x0161, 0x00A9, 0x0218, 0x00AB, 0x0179, 0x00AD, 0x017A, 0x017B,
0x00B0, 0x00B1, 0x010C, 0x0142, 0x017D, 0x201D, 0x00B6, 0x00B7,
0x017E, 0x010D, 0x0219, 0x00BB, 0x0152, 0x0153, 0x0178, 0x017C,
0x00C0, 0x00C1, 0x00C2, 0x0102, 0x00C4, 0x0106, 0x00C6, 0x00C7,
0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF,
0x0110, 0x0143, 0x00D2, 0x00D3, 0x00D4, 0x0150, 0x00D6, 0x015A,
0x0170, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x0118, 0x021A, 0x00DF,
0x00E0, 0x00E1, 0x00E2, 0x0103, 0x00E4, 0x0107, 0x00E6, 0x00E7,
0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
0x0111, 0x0144, 0x00F2, 0x00F3, 0x00F4, 0x0151, 0x00F6, 0x015B,
0x0171, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x0119, 0x021B, 0x00FF
};
static const int welsh_table[256] =
{
common,
0x20ac, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
common2,
0x00A0, 0x00A1, 0x00A2, 0x00A3, 0x00A4, 0x00A5, 0x00A6, 0x00A7,
0x1E80, 0x00A9, 0x1E82, 0x00AB, 0x1EF2, 0x00AD, 0x00AE, 0x0178,
0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5, 0x00B6, 0x00B7,
0x1E81, 0x00B9, 0x1E83, 0x00BB, 0x1EF3, 0x1E84, 0x1E85, 0x00BF,
0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF,
0x0174, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x00D7,
0x00D8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x00DD, 0x0176, 0x00DF,
0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7,
0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
0x0175, 0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x00F7,
0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x00FD, 0x0177, 0x00FF
};
static const int greek_table[256] =
{
common,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0x00A0, 0x2018, 0x2019, 0x00A3, 0x20AC, 0x20AF, 0x00A6, 0x00A7,
0x00A8, 0x00A9, 0x037A, 0x00AB, 0x00AC, 0x00AD, 0x037E, 0x2015,
0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x0384, 0x0385, 0x0386, 0x0387,
0x0388, 0x0389, 0x038A, 0x00BB, 0x038C, 0x00BD, 0x038E, 0x038F,
0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397,
0x0398, 0x0399, 0x039A, 0x039B, 0x039C, 0x039D, 0x039E, 0x039F,
0x03A0, 0x03A1, -1, 0x03A3, 0x03A4, 0x03A5, 0x03A6, 0x03A7,
0x03A8, 0x03A9, 0x03AA, 0x03AB, 0x03AC, 0x03AD, 0x03AE, 0x03AF,
0x03B0, 0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7,
0x03B8, 0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF,
0x03C0, 0x03C1, 0x03C2, 0x03C3, 0x03C4, 0x03C5, 0x03C6, 0x03C7,
0x03C8, 0x03C9, 0x03CA, 0x03CB, 0x03CC, 0x03CD, 0x03CE, -1
};
static const int cyrillic_table[256] =
{
common,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0x00A0, 0x0401, 0x0402, 0x0403, 0x0404, 0x0405, 0x0406, 0x0407,
0x0408, 0x0409, 0x040A, 0x040B, 0x040C, 0x00AD, 0x040E, 0x040F,
0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0416, 0x0417,
0x0418, 0x0419, 0x041A, 0x041B, 0x041C, 0x041D, 0x041E, 0x041F,
0x0420, 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427,
0x0428, 0x0429, 0x042A, 0x042B, 0x042C, 0x042D, 0x042E, 0x042F,
0x0430, 0x0431, 0x0432, 0x0433, 0x0434, 0x0435, 0x0436, 0x0437,
0x0438, 0x0439, 0x043A, 0x043B, 0x043C, 0x043D, 0x043E, 0x043F,
0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447,
0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D, 0x044E, 0x044F,
0x2116, 0x0451, 0x0452, 0x0453, 0x0454, 0x0455, 0x0456, 0x0457,
0x0458, 0x0459, 0x045A, 0x045B, 0x045C, 0x00A7, 0x045E, 0x045F
};
static const int hebrew_table[256] =
{
common,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0x00A0, -1, 0x00A2, 0x00A3, 0x00A4, 0x00A5, 0x00A6, 0x00A7,
0x00A8, 0x00A9, 0x00D7, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x203E,
0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5, 0x00B6, 0x00B7,
0x00B8, 0x00B9, 0x00F7, 0x00BB, 0x00BC, 0x00BD, 0x00BE, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, 0x2017,
0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5, 0x05D6, 0x05D7,
0x05D8, 0x05D9, 0x05DA, 0x05DB, 0x05DC, 0x05DD, 0x05DE, 0x05DF,
0x05E0, 0x05E1, 0x05E2, 0x05E3, 0x05E4, 0x05E5, 0x05E6, 0x05E7,
0x05E8, 0x05E9, 0x05EA, -1, -1, 0x200E, 0x200F, -1
};
/**
* Retrieve UCS table (above), given alphabet number
*
* \param alphabet The RISC OS alphabet number
* \return pointer to table, or NULL if not found
*/
const int *ucstable_from_alphabet(int alphabet)
{
const int *ucstable = NULL;
switch (alphabet) {
case territory_ALPHABET_LATIN1:
ucstable = latin1_table;
break;
case territory_ALPHABET_LATIN2:
ucstable = latin2_table;
break;
case territory_ALPHABET_LATIN3:
ucstable = latin3_table;
break;
case territory_ALPHABET_LATIN4:
ucstable = latin4_table;
break;
case territory_ALPHABET_LATIN5:
ucstable = latin5_table;
break;
case territory_ALPHABET_LATIN6:
ucstable = latin6_table;
break;
case 114: /* Latin7 */
ucstable = latin7_table;
break;
case 115: /* Latin8 */
ucstable = latin8_table;
break;
case 116: /* Latin10 */
ucstable = latin10_table;
break;
case territory_ALPHABET_LATIN9:
ucstable = latin9_table;
break;
case territory_ALPHABET_WELSH:
ucstable = welsh_table;
break;
case territory_ALPHABET_GREEK:
ucstable = greek_table;
break;
case territory_ALPHABET_CYRILLIC:
ucstable = cyrillic_table;
break;
case territory_ALPHABET_HEBREW:
ucstable = hebrew_table;
break;
default:
ucstable = NULL;
break;
}
return ucstable;
}
static const char *localencodings[] = {
"ISO-8859-1//TRANSLIT", /* BFont - 100 - just use Latin1, instead */
"ISO-8859-1//TRANSLIT",
"ISO-8859-2//TRANSLIT",
"ISO-8859-3//TRANSLIT",
"ISO-8859-4//TRANSLIT",
"ISO-8859-5//TRANSLIT",
"ISO-8859-6//TRANSLIT",
"ISO-8859-7//TRANSLIT",
"ISO-8859-8//TRANSLIT",
"ISO-8859-9//TRANSLIT",
"ISO-IR-182//TRANSLIT",
"UTF-8",
"ISO-8859-15//TRANSLIT",
"ISO-8859-10//TRANSLIT",
"ISO-8859-13//TRANSLIT",
"ISO-8859-14//TRANSLIT",
"ISO-8859-16//TRANSLIT",
#define CONT_ENC_END 116 /* RISC OS alphabet numbers lie in a
* contiguous range [100,CONT_ENC_END]
* _except_ for Cyrillic2, which doesn't.
*/
"CP866//TRANSLIT" /* Cyrillic2 - 120 */
};
static const struct special {
char local; /**< Local 8bit representation */
char len; /**< Length (in bytes) of UTF-8 character */
const char *utf; /**< UTF-8 representation */
} special_chars[] = {
{ 0x80, 3, "\xE2\x82\xAC" }, /* EURO SIGN */
{ 0x81, 2, "\xC5\xB4" }, /* LATIN CAPITAL LETTER W WITH CIRCUMFLEX */
{ 0x82, 2, "\xC5\xB5" }, /* LATIN SMALL LETTER W WITH CIRCUMFLEX */
{ 0x84, 3, "\xE2\x9C\x98" }, /* HEAVY BALLOT X */
{ 0x85, 2, "\xC5\xB6" }, /* LATIN CAPITAL LETTER Y WITH CIRCUMFLEX */
{ 0x86, 2, "\xC5\xB7" }, /* LATIN SMALL LETTER Y WITH CIRCUMFLEX */
{ 0x88, 3, "\xE2\x87\x90" }, /* LEFTWARDS DOUBLE ARROW */
{ 0x89, 3, "\xE2\x87\x92" }, /* RIGHTWARDS DOUBLE ARROW */
{ 0x8a, 3, "\xE2\x87\x93" }, /* DOWNWARDS DOUBLE ARROW */
{ 0x8b, 3, "\xE2\x87\x91" }, /* UPWARDS DOUBLE ARROW */
{ 0x8c, 3, "\xE2\x80\xA6" }, /* HORIZONTAL ELLIPSIS */
{ 0x8d, 3, "\xE2\x84\xA2" }, /* TRADE MARK SIGN */
{ 0x8e, 3, "\xE2\x80\xB0" }, /* PER MILLE SIGN */
{ 0x8f, 3, "\xE2\x80\xA2" }, /* BULLET */
{ 0x90, 3, "\xE2\x80\x98" }, /* LEFT SINGLE QUOTATION MARK */
{ 0x91, 3, "\xE2\x80\x99" }, /* RIGHT SINGLE QUOTATION MARK */
{ 0x92, 3, "\xE2\x80\xB9" }, /* SINGLE LEFT-POINTING ANGLE QUOTATION MARK */
{ 0x93, 3, "\xE2\x80\xBA" }, /* SINGLE RIGHT-POINTING ANGLE QUOTATION MARK */
{ 0x94, 3, "\xE2\x80\x9C" }, /* LEFT DOUBLE QUOTATION MARK */
{ 0x95, 3, "\xE2\x80\x9D" }, /* RIGHT DOUBLE QUOTATION MARK */
{ 0x96, 3, "\xE2\x80\x9E" }, /* DOUBLE LOW-9 QUOTATION MARK */
{ 0x97, 3, "\xE2\x80\x93" }, /* EN DASH */
{ 0x98, 3, "\xE2\x80\x94" }, /* EM DASH */
{ 0x99, 3, "\xE2\x88\x92" }, /* MINUS SIGN */
{ 0x9a, 2, "\xC5\x92" }, /* LATIN CAPITAL LIGATURE OE */
{ 0x9b, 2, "\xC5\x93" }, /* LATIN SMALL LIGATURE OE */
{ 0x9c, 3, "\xE2\x80\xA0" }, /* DAGGER */
{ 0x9d, 3, "\xE2\x80\xA1" }, /* DOUBLE DAGGER */
{ 0x9e, 3, "\xEF\xAC\x81" }, /* LATIN SMALL LIGATURE FI */
{ 0x9f, 3, "\xEF\xAC\x82" } /* LATIN SMALL LIGATURE FL */
};
/**
* Convert a UTF-8 encoded string into the system local encoding
*
* \param string The string to convert
* \param len The length (in bytes) of the string, or 0
* \param result Pointer to location in which to store result
* \return The appropriate utf8_convert_ret value
*/
utf8_convert_ret utf8_to_local_encoding(const char *string, size_t len,
char **result)
{
os_error *error;
int alphabet, i;
size_t off, prev_off;
char *temp, *cur_pos;
const char *enc;
utf8_convert_ret err;
assert(string);
assert(result);
/* get length, if necessary */
if (len == 0)
len = strlen(string);
/* read system alphabet */
error = xosbyte1(osbyte_ALPHABET_NUMBER, 127, 0, &alphabet);
if (error)
alphabet = territory_ALPHABET_LATIN1;
/* UTF-8 -> simply copy string */
if (alphabet == 111 /* UTF-8 */) {
*result = strndup(string, len);
return UTF8_CONVERT_OK;
}
/* get encoding name */
enc = (alphabet <= CONT_ENC_END ? localencodings[alphabet - 100]
: (alphabet == 120 ?
localencodings[CONT_ENC_END + 1]
: localencodings[0]));
/* create output buffer */
*(result) = malloc(len + 1);
if (!(*result))
return UTF8_CONVERT_NOMEM;
*(*result) = '\0';
prev_off = 0;
cur_pos = (*result);
/* Iterate over string, converting input between unconvertable
* characters and inserting appropriate output for characters
* that iconv can't handle. */
for (off = 0; off < len; off = utf8_next(string, len, off)) {
if (string[off] != 0xE2 &&
string[off] != 0xC5 && string[off] != 0xEF)
continue;
for (i = 0; i != NOF_ELEMENTS(special_chars); i++) {
if (strncmp(string + off, special_chars[i].utf,
special_chars[i].len) != 0)
continue;
/* 0 length has a special meaning to utf8_to_enc */
if (off - prev_off > 0) {
err = utf8_to_enc(string + prev_off, enc,
off - prev_off, &temp);
if (err != UTF8_CONVERT_OK) {
assert(err != UTF8_CONVERT_BADENC);
free(*result);
return UTF8_CONVERT_NOMEM;
}
strcat(cur_pos, temp);
cur_pos += strlen(temp);
free(temp);
}
*cur_pos = special_chars[i].local;
*(++cur_pos) = '\0';
prev_off = off + special_chars[i].len;
}
}
/* handle last chunk
* NB. 0 length has a special meaning to utf8_to_enc */
if (prev_off < len) {
err = utf8_to_enc(string + prev_off, enc, len - prev_off,
&temp);
if (err != UTF8_CONVERT_OK) {
assert(err != UTF8_CONVERT_BADENC);
free(*result);
return UTF8_CONVERT_NOMEM;
}
strcat(cur_pos, temp);
free(temp);
}
return UTF8_CONVERT_OK;
}
/**
* Convert a string encoded in the system local encoding to UTF-8
*
* \param string The string to convert
* \param len The length (in bytes) of the string, or 0
* \param result Pointer to location in which to store result
* \return The appropriate utf8_convert_ret value
*/
utf8_convert_ret utf8_from_local_encoding(const char *string, size_t len,
char **result)
{
os_error *error;
int alphabet, i, num_specials = 0, result_alloc;
#define SPECIAL_CHUNK_SIZE 255
size_t off, prev_off, cur_off;
char *temp;
const char *enc;
utf8_convert_ret err;
assert(string && result);
/* get length, if necessary */
if (len == 0)
len = strlen(string);
/* read system alphabet */
error = xosbyte1(osbyte_ALPHABET_NUMBER, 127, 0, &alphabet);
if (error)
alphabet = territory_ALPHABET_LATIN1;
/* UTF-8 -> simply copy string */
if (alphabet == 111 /* UTF-8 */) {
temp = strndup(string, len);
if (!temp)
return UTF8_CONVERT_NOMEM;
*result = temp;
return UTF8_CONVERT_OK;
}
/* get encoding name */
enc = (alphabet <= CONT_ENC_END ? localencodings[alphabet - 100]
: (alphabet == 120 ?
localencodings[CONT_ENC_END + 1]
: localencodings[0]));
/* create output buffer (oversized) */
result_alloc = (len * 4) + (3 * SPECIAL_CHUNK_SIZE) + 1;
*(result) = malloc(result_alloc);
if (!(*result))
return UTF8_CONVERT_NOMEM;
*(*result) = '\0';
prev_off = 0;
cur_off = 0;
/* Iterate over string, converting input between unconvertable
* characters and inserting appropriate output for characters
* that iconv can't handle. */
for (off = 0; off < len; off++) {
if (string[off] < 0x80 || string[off] > 0x9f)
continue;
for (i = 0; i != NOF_ELEMENTS(special_chars); i++) {
if (string[off] != special_chars[i].local)
continue;
/* 0 length has a special meaning to utf8_from_enc */
if (off - prev_off > 0) {
err = utf8_from_enc(string + prev_off, enc,
off - prev_off, &temp);
if (err != UTF8_CONVERT_OK) {
assert(err != UTF8_CONVERT_BADENC);
LOG(("utf8_from_enc failed"));
free(*result);
return UTF8_CONVERT_NOMEM;
}
strcat((*result) + cur_off, temp);
cur_off += strlen(temp);
free(temp);
}
strcat((*result) + cur_off, special_chars[i].utf);
cur_off += special_chars[i].len;
prev_off = off + 1;
num_specials++;
if (num_specials % SPECIAL_CHUNK_SIZE ==
SPECIAL_CHUNK_SIZE - 1) {
char *temp = realloc((*result),
result_alloc +
(3 * SPECIAL_CHUNK_SIZE));
if (!temp) {
free(*result);
return UTF8_CONVERT_NOMEM;
}
*result = temp;
result_alloc += (3 * SPECIAL_CHUNK_SIZE);
}
}
}
/* handle last chunk
* NB. 0 length has a special meaning to utf8_from_enc */
if (prev_off < len) {
err = utf8_from_enc(string + prev_off, enc, len - prev_off,
&temp);
if (err != UTF8_CONVERT_OK) {
assert(err != UTF8_CONVERT_BADENC);
LOG(("utf8_from_enc failed"));
free(*result);
return UTF8_CONVERT_NOMEM;
}
strcat((*result) + cur_off, temp);
cur_off += strlen(temp);
free(temp);
}
/* and copy into more reasonably-sized buffer */
temp = realloc((*result), cur_off + 1);
if (!temp) {
LOG(("realloc failed"));
free(*result);
return UTF8_CONVERT_NOMEM;
}
*result = temp;
return UTF8_CONVERT_OK;
}
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