Account for kerning when positioning scripts in the MathFontOld and

[lyx.git] / src / encoding.h

diff --git a/src/encoding.h b/src/encoding.h
index 1463126c03a3c56575f2288647ebb5d0745619c3..f07fb645a47090ea27c9622a6d8bbdbb7c6177c1 100644 (file)
--- a/src/encoding.h
+++ b/src/encoding.h
@@ -13,54 +13,92 @@
 #ifndef ENCODING_H
 #define ENCODING_H
 
-#include <map>
-#include <string>
+#include "support/docstring.h"
 
-#include "support/types.h"
+#include <map>
+#include <set>
 
 namespace lyx {
 
+namespace support { class FileName; }
+
+class LaTeXFeatures;
+
+
 ///
 class Encoding {
 public:
        ///
        Encoding() {}
        ///
-       Encoding(std::string const & n, std::string const & l, char_type const * e)
-               : Name_(n), LatexName_(l)
-       {
-               for (int i = 0; i < 256; ++i)
-                       encoding_table[i] = e[i];
-       }
+       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_; }
        ///
-       char_type ucs(char_type c) const;
+       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_;
        ///
-       char_type encoding_table[256];
+       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_;
 };
 
-extern Encoding symbol_encoding;
-
 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;
+
        ///
-       void read(std::string const & filename);
-       ///
-       Encoding const * getEncoding(std::string const & encoding) const;
+       const_iterator begin() const { return encodinglist.begin(); }
        ///
-       Encoding const * symbol_encoding() { return &symbol_encoding_; }
+       const_iterator end() const { return encodinglist.end(); }
 
        ///
        enum Letter_Form {
@@ -83,12 +121,12 @@ public:
        static bool is_arabic(char_type c);
        ///
        static char_type transformChar(char_type c, Letter_Form form);
+       /// Is this a combining char?
+       static bool isCombiningChar(char_type c);
 
 private:
        ///
        EncodingList encodinglist;
-       ///
-       Encoding symbol_encoding_;
 };
 
 extern Encodings encodings;