// -*- C++ -*-
-/* This file is part of
- * ======================================================
- *
- * LyX, The Document Processor
- *
- * Copyright 1995 Matthias Ettrich
- * Copyright 1995-2000 The LyX Team.
+/**
+ * \file encoding.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
*
- * ====================================================== */
+ * \author Lars Gullik Bjønnes
+ * \author Jean-Marc Lasgouttes
+ *
+ * Full author contact details are available in file CREDITS.
+ */
#ifndef ENCODING_H
#define ENCODING_H
-#ifdef __GNUG__
-#pragma interface
-#endif
+#include "support/docstring.h"
+
+#include <map>
+#include <set>
+
+namespace lyx {
+
+namespace support { class FileName; }
-#include "LString.h"
-#include "lyxrc.h"
+class LaTeXFeatures;
-typedef unsigned short int Uchar;
+///
class Encoding {
public:
+ ///
+ Encoding() {}
+ ///
+ Encoding(std::string const & n, std::string const & l,
+ std::string const & i);
+ ///
+ std::string const & name() const { return Name_; }
+ ///
+ std::string const & latexName() const { return LatexName_; }
+ ///
+ std::string const & iconvName() const { return iconvName_; }
+ /**
+ * Convert \p c to something that LaTeX can understand.
+ * This is either the character itself (if it is representable
+ * in this encoding), or a LaTeX macro.
+ * If the character is not representable in this encoding, but no
+ * LaTeX macro is known, a warning is given of lyxerr, and the
+ * character is returned.
+ */
+ docstring const latexChar(char_type c) const;
+ /// Add the preamble snippet needed for the output of latexChar(c)
+ /// to \p features.
+ void validate(char_type c, LaTeXFeatures & features) const;
+private:
+ ///
+ std::string Name_;
+ ///
+ std::string LatexName_;
+ ///
+ std::string iconvName_;
+ ///
+ typedef std::set<char_type> CharSet;
+ /// Set of UCS4 characters that we can encode (for singlebyte
+ /// encodings only)
+ CharSet encodable_;
+ /// All code points below this are encodable. This helps us to avoid
+ /// lokup of ASCII characters in encodable_ and gives about 1 sec
+ /// speedup on export of the Userguide.
+ char_type start_encodable_;
+};
+
+class Encodings {
+public:
+ ///
+ typedef std::map<std::string, Encoding> EncodingList;
+ /// iterator to iterate over all encodings.
+ /// We hide the fact that our encoding list is implemented as a map.
+ class const_iterator : public EncodingList::const_iterator {
+ typedef EncodingList::const_iterator base;
+ public:
+ const_iterator() : base() {}
+ const_iterator(base const & b) : base(b) {}
+ Encoding const & operator*() const { return base::operator*().second; }
+ Encoding const * operator->() const { return &(base::operator*().second); }
+ };
+ ///
+ Encodings();
+ /// Read the encodings.
+ /// \param encfile encodings definition file
+ /// \param symbolsfile unicode->LaTeX mapping file
+ void read(support::FileName const & encfile,
+ support::FileName const & symbolsfile);
+ /// Get encoding from LyX name \p name
+ Encoding const * getFromLyXName(std::string const & name) const;
+ /// Get encoding from LaTeX name \p name
+ Encoding const * getFromLaTeXName(std::string const & name) const;
+
+ ///
+ const_iterator begin() const { return encodinglist.begin(); }
+ ///
+ const_iterator end() const { return encodinglist.end(); }
+
///
enum Letter_Form {
+ ///
FORM_ISOLATED,
+ ///
FORM_FINAL,
+ ///
FORM_INITIAL,
+ ///
FORM_MEDIAL
};
///
- Encoding(string const & l, Uchar const * e)
- : LatexName_(l) , encoding_table(e) {}
+ static bool isComposeChar_hebrew(char_type c);
///
- string const & LatexName() const {
- return LatexName_;
- }
+ static bool isComposeChar_arabic(char_type c);
///
- Uchar ucs(unsigned char c) const {
- return encoding_table[c];
- }
+ static bool is_arabic_special(char_type c);
///
- static
- bool IsComposeChar_hebrew(unsigned char c);
+ static bool is_arabic(char_type c);
///
- static
- bool IsComposeChar_arabic(unsigned char c);
- ///
- static
- bool is_arabic(unsigned char c);
- ///
- static
- unsigned char TransformChar(unsigned char c, Letter_Form form);
+ static char_type transformChar(char_type c, Letter_Form form);
+ /// Is this a combining char?
+ static bool isCombiningChar(char_type c);
+
private:
///
- string LatexName_;
- ///
- Uchar const * encoding_table;
+ EncodingList encodinglist;
};
+extern Encodings encodings;
-extern Encoding iso8859_1;
-extern Encoding iso8859_2;
-extern Encoding iso8859_3;
-extern Encoding iso8859_4;
-extern Encoding iso8859_6;
-extern Encoding iso8859_7;
-extern Encoding iso8859_9;
-extern Encoding cp1255;
-extern Encoding koi8;
-extern Encoding symbol_encoding;
-
-inline
-bool Encoding::IsComposeChar_hebrew(unsigned char c)
-{
- return c <= 0xd2 && c >= 0xc0 &&
- c != 0xce && c != 0xd0;
-}
-
-
-inline
-bool Encoding::IsComposeChar_arabic(unsigned char c)
-{
- return c >= 0xeb && c <= 0xf2;
-}
-
-
-extern unsigned char arabic_table[][2];
-extern unsigned char arabic_table2[][4];
-unsigned char const arabic_start = 0xc1;
-
-
-inline
-bool Encoding::is_arabic(unsigned char c)
-{
- return c >= arabic_start && arabic_table[c-arabic_start][0];
-}
-
-
-inline
-unsigned char Encoding::TransformChar(unsigned char c, Encoding::Letter_Form form)
-{
- if (!is_arabic(c))
- return c;
-
- if (lyxrc.font_norm == "iso10646-1")
- return arabic_table2[c-arabic_start][form];
- else
- return arabic_table[c-arabic_start][form >> 1];
-}
+} // namespace lyx
#endif
projects / lyx.git / blobdiff