/* Open Asset Import Library (assimp) ---------------------------------------------------------------------- Copyright (c) 2006-2012, assimp team All rights reserved. Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the assimp team, nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission of the assimp team. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ---------------------------------------------------------------------- */ /** @file STEPFileEncoding.cpp * @brief STEP character handling, string unescaping */ #include "AssimpPCH.h" #include "STEPFileEncoding.h" #include "fast_atof.h" #include "../contrib/ConvertUTF/ConvertUTF.h" using namespace Assimp; // roman1 to utf16 table static const UTF16 mac_codetable[] = { // 0x20 unassig./nonprint. slots 0x0020 , 0x0021 , 0x0022 , 0x0023 , 0x0024 , 0x0025 , 0x0026 , 0x0027 , 0x0028 , 0x0029 , 0x002A , 0x002B , 0x002C , 0x002D , 0x002E , 0x002F , 0x0030 , 0x0031 , 0x0032 , 0x0033 , 0x0034 , 0x0035 , 0x0036 , 0x0037 , 0x0038 , 0x0039 , 0x003A , 0x003B , 0x003C , 0x003D , 0x003E , 0x003F , 0x0040 , 0x0041 , 0x0042 , 0x0043 , 0x0044 , 0x0045 , 0x0046 , 0x0047 , 0x0048 , 0x0049 , 0x004A , 0x004B , 0x004C , 0x004D , 0x004E , 0x004F , 0x0050 , 0x0051 , 0x0052 , 0x0053 , 0x0054 , 0x0055 , 0x0056 , 0x0057 , 0x0058 , 0x0059 , 0x005A , 0x005B , 0x005C , 0x005D , 0x005E , 0x005F , 0x0060 , 0x0061 , 0x0062 , 0x0063 , 0x0064 , 0x0065 , 0x0066 , 0x0067 , 0x0068 , 0x0069 , 0x006A , 0x006B , 0x006C , 0x006D , 0x006E , 0x006F , 0x0070 , 0x0071 , 0x0072 , 0x0073 , 0x0074 , 0x0075 , 0x0076 , 0x0077 , 0x0078 , 0x0079 , 0x007A , 0x007B , 0x007C , 0x007D , 0x007E , 0x0000 , // unassig. 0x00C4 , 0x00C5 , 0x00C7 , 0x00C9 , 0x00D1 , 0x00D6 , 0x00DC , 0x00E1 , 0x00E0 , 0x00E2 , 0x00E4 , 0x00E3 , 0x00E5 , 0x00E7 , 0x00E9 , 0x00E8 , 0x00EA , 0x00EB , 0x00ED , 0x00EC , 0x00EE , 0x00EF , 0x00F1 , 0x00F3 , 0x00F2 , 0x00F4 , 0x00F6 , 0x00F5 , 0x00FA , 0x00F9 , 0x00FB , 0x00FC , 0x2020 , 0x00B0 , 0x00A2 , 0x00A3 , 0x00A7 , 0x2022 , 0x00B6 , 0x00DF , 0x00AE , 0x00A9 , 0x2122 , 0x00B4 , 0x00A8 , 0x2260 , 0x00C6 , 0x00D8 , 0x221E , 0x00B1 , 0x2264 , 0x2265 , 0x00A5 , 0x00B5 , 0x2202 , 0x2211 , 0x220F , 0x03C0 , 0x222B , 0x00AA , 0x00BA , 0x03A9 , 0x00E6 , 0x00F8 , 0x00BF , 0x00A1 , 0x00AC , 0x221A , 0x0192 , 0x2248 , 0x2206 , 0x00AB , 0x00BB , 0x2026 , 0x00A0 , 0x00C0 , 0x00C3 , 0x00D5 , 0x0152 , 0x0153 , 0x2013 , 0x2014 , 0x201C , 0x201D , 0x2018 , 0x2019 , 0x00F7 , 0x25CA , 0x00FF , 0x0178 , 0x2044 , 0x20AC , 0x2039 , 0x203A , 0xFB01 , 0xFB02 , 0x2021 , 0x00B7 , 0x201A , 0x201E , 0x2030 , 0x00C2 , 0x00CA , 0x00C1 , 0x00CB , 0x00C8 , 0x00CD , 0x00CE , 0x00CF , 0x00CC , 0x00D3 , 0x00D4 , 0xF8FF , 0x00D2 , 0x00DA , 0x00DB , 0x00D9 , 0x0131 , 0x02C6 , 0x02DC , 0x00AF , 0x02D8 , 0x02D9 , 0x02DA , 0x00B8 , 0x02DD , 0x02DB , 0x02C7 }; // ------------------------------------------------------------------------------------------------ bool STEP::StringToUTF8(std::string& s) { // very basic handling for escaped string sequences // http://doc.spatial.com/index.php?title=InterOp:Connect/STEP&redirect=no for (size_t i = 0; i < s.size(); ) { if (s[i] == '\\') { // \S\X - cp1252 (X is the character remapped to [0,127]) if (i+3 < s.size() && s[i+1] == 'S' && s[i+2] == '\\') { // http://stackoverflow.com/questions/5586214/how-to-convert-char-from-iso-8859-1-to-utf-8-in-c-multiplatformly ai_assert((uint8_t)s[i+3] < 0x80); const uint8_t ch = s[i+3] + 0x80; s[i] = 0xc0 | (ch & 0xc0) >> 6; s[i+1] = 0x80 | (ch & 0x3f); s.erase(i + 2,2); ++i; } // \X\xx - mac/roman (xx is a hex sequence) else if (i+4 < s.size() && s[i+1] == 'X' && s[i+2] == '\\') { const uint8_t macval = HexOctetToDecimal(s.c_str() + i + 3); if(macval < 0x20) { return false; } ai_assert(sizeof(mac_codetable) / sizeof(mac_codetable[0]) == 0x100-0x20); const UTF32 unival = mac_codetable[macval - 0x20], *univalp = &unival; UTF8 temp[5], *tempp = temp; ai_assert(sizeof(UTF8) == 1); if(ConvertUTF32toUTF8(&univalp, univalp+1, &tempp, tempp+sizeof(temp), lenientConversion) != conversionOK) { return false; } const size_t outcount = static_cast(tempp-temp); s.erase(i,5); s.insert(i, reinterpret_cast(temp), outcount); i += outcount; } // \Xn\ .. \X0\ - various unicode encodings (n=2: utf16; n=4: utf32) else if (i+3 < s.size() && s[i+1] == 'X' && s[i+2] >= '0' && s[i+2] <= '9') { switch(s[i+2]) { // utf16 case '2': // utf32 case '4': if (s[i+3] == '\\') { const size_t basei = i+4; // scan for \X0\ size_t j = basei, jend = s.size()-4; for (; j < jend; ++j) { if (s[j] == '\\' && s[j] == 'X' && s[j] == '0' && s[j] == '\\') { break; } } if (j == jend) { return false; } if (j == basei) { s.erase(i,8); continue; } if (s[i+2] == '2') { if (((j - basei) % 4) != 0) { return false; } const size_t count = (j-basei)/4; boost::scoped_array src = boost::scoped_array(new UTF16[count]); const char* cur = s.c_str() + basei; for (size_t k = 0; k < count; ++k, cur += 4) { src[k] = (static_cast(HexOctetToDecimal(cur)) << 8u) | static_cast(HexOctetToDecimal(cur+2)); } const size_t dcount = count * 3; // this is enough to hold all possible outputs boost::scoped_array dest = boost::scoped_array(new UTF8[dcount]); const UTF16* srct = src.get(); UTF8* destt = dest.get(); if(ConvertUTF16toUTF8(&srct, srct+count, &destt, destt+dcount, lenientConversion) != conversionOK) { return false; } const size_t outcount = static_cast(destt-dest.get()); s.erase(i,(j+4-i)); ai_assert(sizeof(UTF8) == 1); s.insert(i, reinterpret_cast(dest.get()), outcount); i += outcount; continue; } else if (s[i+2] == '4') { if (((j - basei) % 8) != 0) { return false; } const size_t count = (j-basei)/8; boost::scoped_array src = boost::scoped_array(new UTF32[count]); const char* cur = s.c_str() + basei; for (size_t k = 0; k < count; ++k, cur += 8) { src[k] = (static_cast(HexOctetToDecimal(cur )) << 24u) | (static_cast(HexOctetToDecimal(cur+2)) << 16u) | (static_cast(HexOctetToDecimal(cur+4)) << 8u) | (static_cast(HexOctetToDecimal(cur+6))); } const size_t dcount = count * 5; // this is enough to hold all possible outputs boost::scoped_array dest = boost::scoped_array(new UTF8[dcount]); const UTF32* srct = src.get(); UTF8* destt = dest.get(); if(ConvertUTF32toUTF8(&srct, srct+count, &destt, destt+dcount, lenientConversion) != conversionOK) { return false; } const size_t outcount = static_cast(destt-dest.get()); s.erase(i,(j+4-i)); ai_assert(sizeof(UTF8) == 1); s.insert(i, reinterpret_cast(dest.get()), outcount); i += outcount; continue; } } break; // TODO: other encoding patterns? default: return false; } } } ++i; } return true; }