#include "encoding.h"
#include "debug.h"
+#include "LaTeXFeatures.h"
#include "lyxlex.h"
#include "lyxrc.h"
+#include "support/filename.h"
+#include "support/lstrings.h"
+#include "support/unicode.h"
+
+#include <sstream>
+
namespace lyx {
+using support::FileName;
+
#ifndef CXX_GLOBAL_CSTD
using std::strtol;
#endif
namespace {
-char_type tab_iso8859_1[256] = {
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
- 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
- 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
- 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
- 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
- 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
- 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
- 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
- 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
- 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
- 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
- 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
- 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
- 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
- 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
- 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
-};
-
-#ifdef USE_UNICODE_FOR_SYMBOLS
-char_type tab_symbol[256] = {
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
- 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
-
- 0x0020, 0x0021, 0x2200, 0x0023, 0x2203, 0x0025, 0x0026, 0x220b,
- 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
-
- 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
-
-// 0x2245, 0x0391, 0x0392, 0x03a7, 0x0394, 0x0395, 0x03a6, 0x0393,
-// 0x0397, 0x0399, 0x03d1, 0x039a, 0x039b, 0x039c, 0x039d, 0x039f,
-
-// 0x03a0, 0x0398, 0x03a1, 0x03a3, 0x03a4, 0x03a5, 0x03c2, 0x03a9,
-// 0x039e, 0x03a8, 0x0396, 0x005b, 0x2234, 0x005d, 0x22a5, 0xffff,
- 0x2245, 0x0041, 0x0042, 0x0058, 0x0394, 0x0045, 0x03c2, 0x03a9,
- 0x0048, 0x0049, 0x03d1, 0x004b, 0x039b, 0x004d, 0x004e, 0x004f,
-
- 0x03a0, 0x0398, 0x0050, 0x03a3, 0x0054, 0x0059, 0x03c2, 0x03a9,
- 0x039e, 0x03a8, 0x005a, 0x005b, 0x2234, 0x005d, 0x22a5, 0xffff,
-
- 0xffff, 0x03b1, 0x03b2, 0x03c7, 0x03b4, 0x03b5, 0x03d5, 0x03b3,
- 0x03b7, 0x03b9, 0x03c6, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03bf,
-
- 0x03c0, 0x03b8, 0x03c1, 0x03c3, 0x03c4, 0x03c5, 0x03d6, 0x03c9,
- 0x03be, 0x03c8, 0x03b6, 0x007b, 0x007c, 0x007d, 0x007e, 0xffff,
-
- 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
- 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
-
- 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
- 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
-
- 0xffff, 0x03d2, 0x2032, 0x2264, 0x2215, 0x221e, 0xffff, 0x2663,
- 0x2666, 0x2665, 0x2660, 0x2194, 0x2190, 0x2191, 0x2192, 0x2193,
-
- 0x00b0, 0x00b1, 0x2033, 0x2265, 0x00d7, 0x221d, 0x2202, 0x2022,
- 0x00f7, 0x2260, 0x2261, 0x2248, 0x22ef, 0xffff, 0xffff, 0x21b5,
-
- 0x2135, 0x2111, 0x211c, 0x2118, 0x2297, 0x2295, 0x2205, 0x2229,
- 0x222a, 0x2283, 0x2287, 0x2284, 0x2282, 0x2286, 0x2208, 0x2209,
-
- 0x2220, 0x2207, 0x00ae, 0x00a9, 0x2122, 0x220f, 0x221a, 0x22c5,
- 0x00ac, 0x2227, 0x2228, 0x21d4, 0x21d0, 0x21d1, 0x21d2, 0x21d3,
-
- 0x2662, 0x2329, 0x00ae, 0x00a9, 0x2122, 0x2211, 0xffff, 0xffff,
- 0xffff, 0x2308, 0xffff, 0x230a, 0xffff, 0xffff, 0xffff, 0xffff,
-
- 0xffff, 0x232a, 0x222b, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
- 0xffff, 0x2309, 0xffff, 0x230b, 0xffff, 0xffff, 0xffff, 0xffff
-};
-#endif
-
-
char_type arabic_table2[63][4] = {
{0x41, 0x41, 0x41, 0x41}, // 0xc1 = hamza
{0x42, 0xa1, 0x42, 0xa1}, // 0xc2 = ligature madda on alef
char_type const arabic_start = 0xc1;
+
+/// Information about a single UCS4 character
+struct CharInfo {
+ /// LaTeX command for this character
+ docstring command;
+ /// Needed LaTeX preamble (or feature)
+ string preamble;
+ /// Is this a combining character?
+ bool combining;
+ /// Is \c preamble a feature known by LaTeXFeatures, or a raw LaTeX
+ /// command?
+ bool feature;
+ /// Always force the LaTeX command, even if the encoding contains
+ /// this character?
+ bool force;
+};
+
+
+typedef std::map<char_type, CharInfo> CharInfoMap;
+CharInfoMap unicodesymbols;
+
} // namespace anon
+Encoding::Encoding(string const & n, string const & l, string const & i)
+ : Name_(n), LatexName_(l), iconvName_(i)
+{
+ if (n == "ascii")
+ // ASCII can encode 128 code points and nothing else
+ start_encodable_ = 128;
+ if (n == "utf8" || n == "utf8x")
+ // UTF8 can encode all 1<<20 + 1<<16 UCS4 code points
+ start_encodable_ = 0x110000;
+ else {
+ start_encodable_ = 0;
+ // temporarily switch off lyxerr, since we will generate iconv errors
+ lyxerr.disable();
+ for (unsigned short j = 0; j < 256; ++j) {
+ char const c = j;
+ std::vector<char_type> const ucs4 = eightbit_to_ucs4(&c, 1, i);
+ if (ucs4.size() == 1) {
+ char_type const c = ucs4[0];
+ CharInfoMap::const_iterator const it = unicodesymbols.find(c);
+ if (it == unicodesymbols.end() || !it->second.force)
+ encodable_.insert(c);
+ }
+ }
+ lyxerr.enable();
+ CharSet::iterator it = encodable_.find(start_encodable_);
+ while (it != encodable_.end()) {
+ encodable_.erase(it);
+ ++start_encodable_;
+ it = encodable_.find(start_encodable_);
+ }
+ }
+}
+
+
+docstring const Encoding::latexChar(char_type c) const
+{
+ if (c < start_encodable_)
+ return docstring(1, c);
+ if (encodable_.find(c) == encodable_.end()) {
+ // c cannot be encoded in this encoding
+ CharInfoMap::const_iterator const it = unicodesymbols.find(c);
+ if (it == unicodesymbols.end())
+ lyxerr << "Could not find LaTeX command for character 0x"
+ << std::hex << c << ".\nLaTeX export will fail."
+ << endl;
+ else
+ return it->second.command;
+ }
+ return docstring(1, c);
+}
+
-char_type Encoding::ucs(char_type c) const
+void Encoding::validate(char_type c, LaTeXFeatures & features) const
{
- BOOST_ASSERT(c < 256);
- return encoding_table[c];
+ // Add the preamble stuff even if c can be encoded in this encoding,
+ // since the inputenc package only maps the code point c to a command,
+ // it does not make this command available.
+ CharInfoMap::const_iterator const it = unicodesymbols.find(c);
+ if (it != unicodesymbols.end() && !it->second.preamble.empty()) {
+ if (it->second.feature)
+ features.require(it->second.preamble);
+ else
+ features.addPreambleSnippet(it->second.preamble);
+ }
}
}
-Encoding const * Encodings::getEncoding(string const & encoding) const
+bool Encodings::isCombiningChar(char_type c)
+{
+ CharInfoMap::const_iterator const it = unicodesymbols.find(c);
+ if (it != unicodesymbols.end())
+ return it->second.combining;
+ return false;
+}
+
+
+Encoding const * Encodings::getFromLyXName(string const & name) const
{
- EncodingList::const_iterator it = encodinglist.find(encoding);
+ EncodingList::const_iterator it = encodinglist.find(name);
if (it != encodinglist.end())
return &it->second;
else
return 0;
}
+
+Encoding const * Encodings::getFromLaTeXName(string const & name) const
+{
+ // We don't use std::find_if because it makes copies of the pairs in
+ // the map.
+ // This linear search is OK since we don't have many encodings.
+ // Users could even optimize it by putting the encodings they use
+ // most at the top of lib/encodings.
+ EncodingList::const_iterator const end = encodinglist.end();
+ for (EncodingList::const_iterator it = encodinglist.begin(); it != end; ++it)
+ if (it->second.latexName() == name)
+ return &it->second;
+ return 0;
+}
+
+
Encodings::Encodings()
{
- encodinglist["iso8859-1"] = Encoding("iso8859-1", "latin1", tab_iso8859_1);
- symbol_encoding_ =
-#ifdef USE_UNICODE_FOR_SYMBOLS
- Encoding("symbol", "", tab_symbol);
-#else
- Encoding("symbol", "", tab_iso8859_1);
-#endif
}
-void Encodings::read(string const & filename)
+
+void Encodings::read(FileName const & encfile, FileName const & symbolsfile)
{
+ // We must read the symbolsfile first, because the Encoding
+ // constructor depends on it.
+ LyXLex symbolslex(0, 0);
+ symbolslex.setFile(symbolsfile);
+ while (symbolslex.isOK()) {
+ char_type symbol;
+ CharInfo info;
+ string flags;
+
+ if (symbolslex.next(true)) {
+ std::istringstream is(symbolslex.getString());
+ // reading symbol directly does not work if
+ // char_type == std::wchar_t.
+ boost::uint32_t tmp;
+ if(!(is >> std::hex >> tmp))
+ break;
+ symbol = tmp;
+ } else
+ break;
+ if (symbolslex.next(true))
+ info.command = symbolslex.getDocString();
+ else
+ break;
+ if (symbolslex.next(true))
+ info.preamble = symbolslex.getString();
+ else
+ break;
+ if (symbolslex.next(true))
+ flags = symbolslex.getString();
+ else
+ break;
+
+ info.combining = false;
+ info.force = false;
+ while (!flags.empty()) {
+ string flag;
+ flags = support::split(flags, flag, ',');
+ if (flag == "combining")
+ info.combining = true;
+ else if (flag == "force")
+ info.force = true;
+ else
+ lyxerr << "Ignoring unknown flag `" << flag
+ << "' for symbol `0x" << std::hex
+ << symbol << "'." << endl;
+ }
+
+ if (!info.preamble.empty())
+ info.feature = info.preamble[0] != '\\';
+
+ lyxerr[Debug::INFO]
+ << "Read unicode symbol " << symbol << " '"
+ << to_utf8(info.command) << "' '" << info.preamble
+ << "' " << info.combining << ' ' << info.feature
+ << endl;
+ unicodesymbols[symbol] = info;
+ }
+
+ // Now read the encodings
enum Encodingtags {
et_encoding = 1,
et_end,
};
LyXLex lex(encodingtags, et_last - 1);
- lex.setFile(filename);
+ lex.setFile(encfile);
while (lex.isOK()) {
switch (lex.lex()) {
case et_encoding:
string const name = lex.getString();
lex.next();
string const latexname = lex.getString();
+ lex.next();
+ string const iconvname = lex.getString();
lyxerr[Debug::INFO] << "Reading encoding " << name << endl;
- char_type table[256];
- for (unsigned int i = 0; i < 256; ++i) {
- lex.next();
- string const tmp = lex.getString();
- table[i] = ::strtol(tmp.c_str(), 0 , 16);
- }
- encodinglist[name] = Encoding(name, latexname, table);
+ encodinglist[name] = Encoding(name, latexname, iconvname);
if (lex.lex() != et_end)
lex.printError("Encodings::read: "
"missing end");
projects / lyx.git / blobdiff