// -*- related-file-name: "../include/efont/otfname.hh" -*- /* otfname.{cc,hh} -- OpenType name table * * Copyright (c) 2003-2012 Eddie Kohler * * This program 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; either version 2 of the License, or (at your option) * any later version. This program 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. */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include #include #include #include #include #define USHORT_AT(d) (ntohs(*(const uint16_t *)(d))) namespace Efont { namespace OpenType { static const uint16_t mac_roman_encoding[] = { // 0x80-0x8F 0x00C4, 0x00C5, 0x00C7, 0x00C9, // Adieresis Aring Ccedilla Eacute 0x00D1, 0x00D6, 0x00DC, 0x00E1, // Ntilde Odieresis Udieresis aacute 0x00E0, 0x00E2, 0x00E4, 0x00E3, // agrave acircumflex adieresis atilde 0x00E5, 0x00E7, 0x00E9, 0x00E8, // aring ccedilla eacute egrave // 0x90-0x9F 0x00EA, 0x00EB, 0x00ED, 0x00EC, // ecircumflex edieresis iacute igrave 0x00EE, 0x00EF, 0x00F1, 0x00F3, // icircumflex idieresis ntilde oacute 0x00F2, 0x00F4, 0x00F6, 0x00F5, // ograve ocircumflex odieresis otilde 0x00FA, 0x00F9, 0x00FB, 0x00FC, // uacute ugrave ucircumflex udieresis // 0xA0-0xAF 0x2020, 0x00B0, 0x00A2, 0x00A3, // dagger degree cent sterling 0x00A7, 0x2022, 0x00B6, 0x00DF, // section bullet paragraph germandbls 0x00AE, 0x00A9, 0x2122, 0x00B4, // registered copyright trademark acute 0x00A8, 0x2260, 0x00C6, 0x00D8, // dieresis notequal AE Oslash // 0xB0-0xBF 0x221E, 0x00B1, 0x2264, 0x2265, // infinity plusminus lessequal greaterequal 0x00A5, 0x00B5, 0x2202, 0x2211, // yen mu partialdiff summation 0x220F, 0x03C0, 0x222B, 0x00AA, // product pi integral ordfeminine 0x00BA, 0x03A9, 0x00E6, 0x00F8, // ordmasculine Omegagreek ae oslash // 0xC0-0xCF 0x00BF, 0x00A1, 0x00AC, 0x221A, // questiondown exclamdown logicalnot radical 0x0192, 0x2248, 0x2206, 0x00AB, // florin approxequal increment guillemotleft 0x00BB, 0x2026, 0x00A0, 0x00C0, // guillemotright ellipsis nbspace Agrave 0x00C3, 0x00D5, 0x0152, 0x0153, // Atilde Otilde OE oe // 0xD0-0xDF 0x2013, 0x2014, 0x201C, 0x201D, // endash emdash quotedblleft quotedblright 0x2018, 0x2019, 0x00F7, 0x25CA, // quoteleft quoteright divide lozenge 0x00FF, 0x0178, 0x2044, 0x20AC, // ydieresis Ydieresis fraction Euro 0x2039, 0x203A, 0xFB01, 0xFB02, // guilsinglleft guilsinglright fi fl // 0xE0-0xEF 0x2021, 0x00B7, 0x201A, 0x201E, // daggerdbl middot quotesinglbase quotedblbase 0x2030, 0x00C2, 0x00CA, 0x00C1, // perthousand Acircumflex Ecircumflex Aacute 0x00CB, 0x00C8, 0x00CD, 0x00CE, // Edieresis Egrave Iacute Icircumflex 0x00CF, 0x00CC, 0x00D3, 0x00D4, // Idieresis Igrave Oacute Ocircumflex // 0xF0-0xFF 0xF8FF, 0x00D2, 0x00DA, 0x00DB, // apple Ograve Uacute Ucircumflex 0x00D9, 0x0131, 0x02C6, 0x02DC, // Ugrave dotlessi circumflex tilde 0x00AF, 0x02D8, 0x02D9, 0x02DA, // macron breve dotaccent ring 0x00B8, 0x02DD, 0x02DB, 0x02C7 // cedilla hungarumlaut ogonek caron }; Name::Name(const String &s, ErrorHandler *errh) : _str(s) { _str.align(2); _error = parse_header(errh ? errh : ErrorHandler::silent_handler()); } int Name::parse_header(ErrorHandler *errh) { // HEADER FORMAT: // USHORT version // USHORT numTables int len = _str.length(); const uint8_t *data = _str.udata(); if (len == 0) return errh->error("font has no % table"), -EFAULT; if (HEADER_SIZE > len) return errh->error("% table too small"), -EFAULT; if (!(data[0] == '\000' && data[1] == '\000')) return errh->error("bad % version number"), -ERANGE; int count = USHORT_AT(data + 2); if (HEADER_SIZE + count*NAMEREC_SIZE > len) return errh->error("% table too small"), -EFAULT; return 0; } String Name::name(const_iterator i) const { if (i < end()) { int stringOffset = USHORT_AT(_str.data() + 4); int length = USHORT_AT(reinterpret_cast(i) + 8); int offset = USHORT_AT(reinterpret_cast(i) + 10); if (stringOffset + offset + length <= _str.length()) return _str.substring(stringOffset + offset, length); } return String(); } String Name::utf8_name(const_iterator i) const { // This code can handle Microsoft Unicode BMP and Mac Roman encodings, // but that's it if (!(i < end())) return String(); int stringOffset = USHORT_AT(_str.data() + 4); int length = USHORT_AT(reinterpret_cast(i) + 8); int offset = USHORT_AT(reinterpret_cast(i) + 10); if (stringOffset + offset + length > _str.length()) return String(); const char *begins = _str.data() + stringOffset + offset; const char *ends = begins + length; if (platform(*i) == P_MICROSOFT && encoding(*i) == E_MS_UNICODE_BMP) { StringAccum sa; for (const char *s = begins; s + 1 < ends; s += 2) sa.append_utf8(USHORT_AT(s)); return sa.take_string(); } else if (platform(*i) == P_MACINTOSH && encoding(*i) == E_MAC_ROMAN) { StringAccum sa; for (const char *s = begins; s < ends; s++) if ((unsigned char) *s >= 0x80) { sa.append(begins, s); sa.append_utf8(mac_roman_encoding[*s & 0x7F]); begins = s + 1; } if (!sa) return _str.substring(begins, ends); else { sa.append(begins, ends); return sa.take_string(); } } else return _str.substring(begins, ends); } String Name::english_name(int nameid) const { const_iterator end = this->end(); const_iterator it = std::find_if(begin(), end, PlatformPred(nameid, P_MICROSOFT, E_MS_UNICODE_BMP, L_MS_ENGLISH_AMERICAN)); if (it == end) it = std::find_if(begin(), end, PlatformPred(nameid, P_MACINTOSH, E_MAC_ROMAN, 0)); return utf8_name(it); } bool Name::version_chaincontext_reverse_backtrack() const { String vstr = name(std::find_if(begin(), end(), PlatformPred(N_VERSION, 1, 0, 0))); const char *v = vstr.begin(), *endv = vstr.end(); if (v + 20 <= endv) { if (v[0] != 'O' || v[1] != 'T' || v[2] != 'F' || v[3] == ';') goto try_core; for (v += 4; v < endv && *v != ';'; v++) /* do nothing */; if (v + 3 >= endv || v[1] != 'P' || v[2] != 'S' || v[3] == ';') goto try_core; for (v += 4; v < endv && *v != ';'; v++) /* do nothing */; if (v + 11 >= endv || memcmp(v + 1, "Core 1.0.", 9) != 0 || (v[10] != '2' && v[10] != '3') || (v[11] < '0' || v[11] > '9')) goto try_core; return true; } try_core: v = vstr.begin(); if (v + 16 > endv || v[0] != 'C' || v[1] != 'o' || v[2] != 'r' || v[3] != 'e') return false; for (v += 4; v < endv && *v != ';'; v++) /* do nothing */; if (v + 12 > endv || memcmp(v, ";makeotf.lib", 12) != 0) return false; return true; } }}