The Tor Browser: browser/components/translation/cld2/internal/getonescriptspan.h@6474c204b198 (annotated)

browser/components/translation/cld2/internal/getonescriptspan.h@6474c204b198 (annotated)

browser/components/translation/cld2/internal/getonescriptspan.h

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright 2013 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
 // Author: dsites@google.com (Dick Sites)
 //
 #ifndef I18N_ENCODINGS_CLD2_INTERNAL_GETONESCRIPTSPAN_H_
 #define I18N_ENCODINGS_CLD2_INTERNAL_GETONESCRIPTSPAN_H_
 #include "integral_types.h"
 #include "langspan.h"
 #include "offsetmap.h"
 namespace CLD2 {
 static const int kMaxScriptBuffer = 40960;
 static const int kMaxScriptLowerBuffer = (kMaxScriptBuffer * 3) / 2;
 static const int kMaxScriptBytes = kMaxScriptBuffer - 32;   // Leave some room
 static const int kWithinScriptTail = 32;    // Stop at word space in last
                                             // N bytes of script buffer
 static inline bool IsContinuationByte(char c) {
   return static_cast<signed char>(c) < -64;
 }
 // Gets lscript number for letters; always returns
 //   0 (common script) for non-letters
 int GetUTF8LetterScriptNum(const char* src);
 // Update src pointer to point to next quadgram, +2..+5
 // Looks at src[0..4]
 const char* AdvanceQuad(const char* src);
 class ScriptScanner {
  public:
   ScriptScanner(const char* buffer, int buffer_length, bool is_plain_text);
   ScriptScanner(const char* buffer, int buffer_length, bool is_plain_text,
                 bool any_text, bool any_script);
   ~ScriptScanner();
   // Copy next run of same-script non-tag letters to buffer [NUL terminated]
   bool GetOneScriptSpan(LangSpan* span);
   // Force Latin and Cyrillic scripts to be lowercase
   void LowerScriptSpan(LangSpan* span);
   // Copy next run of same-script non-tag letters to buffer [NUL terminated]
   // Force Latin and Cyrillic scripts to be lowercase
   bool GetOneScriptSpanLower(LangSpan* span);
   // Copy next run of non-tag characters to buffer [NUL terminated]
   // This just removes tags and removes entities
   // Buffer has leading space
   bool GetOneTextSpan(LangSpan* span);
   // Maps byte offset in most recent GetOneScriptSpan/Lower
   // span->text [0..text_bytes] into an additional byte offset from
   // span->offset, to get back to corresponding text in the original
   // input buffer.
   // text_offset must be the first byte
   // of a UTF-8 character, or just beyond the last character. Normally this
   // routine is called with the first byte of an interesting range and
   // again with the first byte of the following range.
   int MapBack(int text_offset);
   const char* GetBufferStart() {return start_byte_;};
  private:
   // Skip over tags and non-letters
   int SkipToFrontOfSpan(const char* src, int len, int* script);
   const char* start_byte_;        // Starting byte of buffer to scan
   const char* next_byte_;         // First unscanned byte
   const char* next_byte_limit_;   // Last byte + 1
   int byte_length_;               // Bytes left: next_byte_limit_ - next_byte_
   bool is_plain_text_;            // true fo text, false for HTML
   char* script_buffer_;           // Holds text with expanded entities
   char* script_buffer_lower_;     // Holds lowercased text
   bool letters_marks_only_;       // To distinguish scriptspan of one
                                   // letters/marks vs. any mixture of text
   bool one_script_only_;          // To distinguish scriptspan of one
                                   // script vs. any mixture of scripts
   int exit_state_;                // For tag parser kTagParseTbl_0, based
                                   // on letters_marks_only_
  public :
   // Expose for debugging
   OffsetMap map2original_;    // map from script_buffer_ to buffer
   OffsetMap map2uplow_;       // map from script_buffer_lower_ to script_buffer_
 };
 }  // namespace CLD2
 #endif  // I18N_ENCODINGS_CLD2_INTERNAL_GETONESCRIPTSPAN_H_

The Tor Browser / annotate

browser/components/translation/cld2/internal/getonescriptspan.h@6474c204b198 (annotated)

browser/components/translation/cld2/internal/getonescriptspan.h