src/apps/terminal/TermParse.h

   1 /*
   2  * Copyright 2013, Haiku, Inc. All rights reserved.
   3  * Copyright (c) 2003-4 Kian Duffy <myob@users.sourceforge.net>
   4  * Parts Copyright (C) 1998,99 Kazuho Okui and Takashi Murai.
   5  *
   6  * Distributed under the terms of the MIT License.
   7  *
   8  * Authors:
   9  *              Kian Duffy, myob@users.sourceforge.net
  10  *              Siarzhuk Zharski, zharik@gmx.li
  11  */
  12 #ifndef TERMPARSE_H
  13 #define TERMPARSE_H
  14
  15
  16 #include "TermConst.h"
  17
  18 #include <Handler.h>
  19 #include <OS.h>
  20
  21
  22 #define READ_BUF_SIZE 2048
  23         // pty read buffer size
  24 #define MIN_PTY_BUFFER_SPACE    16
  25         // minimal space left before the reader tries to read more
  26 #define ESC_PARSER_BUFFER_SIZE  64
  27         // size of the parser buffer
  28
  29
  30 class TerminalBuffer;
  31
  32 class TermParse : public BHandler {
  33 public:
  34         TermParse(int fd);
  35         ~TermParse();
  36
  37         status_t StartThreads(TerminalBuffer *view);
  38         status_t StopThreads();
  39
  40 private:
  41         inline uchar _NextParseChar();
  42
  43         // Initialize TermParse and PtyReader thread.
  44         status_t _InitTermParse();
  45         status_t _InitPtyReader();
  46
  47         void _StopTermParse();
  48         void _StopPtyReader();
  49
  50         int32 EscParse();
  51         int32 PtyReader();
  52
  53         void DumpState(int *groundtable, int *parsestate, uchar c);
  54
  55         static int32 _ptyreader_thread(void *);
  56         static int32 _escparse_thread(void *);
  57
  58         status_t _ReadParserBuffer();
  59
  60         void _DeviceStatusReport(int n);
  61         void _DecReqTermParms(int value);
  62         void _DecPrivateModeSet(int value);
  63         void _DecPrivateModeReset(int value);
  64         int* _GuessGroundTable(int encoding);
  65         void _ProcessOperatingSystemControls(uchar* params);
  66
  67         int fFd;
  68
  69         thread_id fParseThread;
  70         thread_id fReaderThread;
  71         sem_id fReaderSem;
  72         sem_id fReaderLocker;
  73
  74         uint fBufferPosition;
  75         uchar fReadBuffer[READ_BUF_SIZE];
  76         int32 fReadBufferSize;
  77
  78         uchar fParserBuffer[ESC_PARSER_BUFFER_SIZE];
  79         int32 fParserBufferSize;
  80         int32 fParserBufferOffset;
  81
  82         TerminalBuffer *fBuffer;
  83
  84         bool fQuitting;
  85 };
  86
  87 #endif // TERMPARSE_H