| 1 | #ifndef FACT_Readline
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| 2 | #define FACT_Readline
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| 3 |
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| 4 | #include <string>
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| 5 | #include <vector>
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| 6 |
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| 7 | class Readline
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| 8 | {
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| 9 | public:
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| 10 | static bool RedirectionWrapper(std::ostream &out, bool (*function)());
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| 11 |
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| 12 | protected:
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| 13 | /// A pointer to the unique instance of Readline to let the static
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| 14 | /// functions used as callback for readline call member function
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| 15 | /// with an object. This makes overwriting easier.
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| 16 | static Readline *This;
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| 17 |
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| 18 | private:
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| 19 | std::string fName; /// Filename for the history file compiled in the constructor
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| 20 | int fMaxLines; /// Maximum number of lines in the history file
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| 21 |
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| 22 | std::string fLastLine; /// Last line adde to history
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| 23 |
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| 24 | int fLine;
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| 25 |
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| 26 | // Static member function which are used to adapt readline to ncurses
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| 27 | static int rl_ncurses_getc(FILE *);
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| 28 | static int rl_ncurses_startup();
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| 29 | static void rl_ncurses_redisplay();
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| 30 | static int rl_ncurses_event_hook();
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| 31 | static void rl_ncurses_completion_display(char **matches, int num, int max);
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| 32 | static char **rl_ncurses_completion_function(const char *text, int start, int end);
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| 33 | static char *CompleteImp(const char* text, int state);
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| 34 |
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| 35 |
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| 36 | protected:
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| 37 | // The non static implementations of the callback funtions above
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| 38 | virtual int Getc(FILE *);
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| 39 | virtual void Startup();
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| 40 | virtual void EventHook();
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| 41 | virtual void Shutdown(const char *buf);
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| 42 | virtual void Redisplay();
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| 43 | virtual void CompletionDisplay(char **matches, int num, int max);
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| 44 |
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| 45 | // Functions dealing with auto completion
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| 46 | virtual char *Complete(const char* text, int state);
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| 47 | virtual char **Completion(const char *text, int start, int end);
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| 48 |
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| 49 | /// Pointer to a list of possible matched for auto-completion
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| 50 | const std::vector<std::string> *fCompletion;
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| 51 | void SetCompletion(const std::vector<std::string> *v) { fCompletion = v; }
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| 52 | char **Complete(const std::vector<std::string> &v, const char *text);
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| 53 |
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| 54 | public:
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| 55 | Readline(const char *prgname);
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| 56 | ~Readline();
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| 57 |
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| 58 | // Access to readline
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| 59 | void BindKeySequence(const char *seq, int (*func)(int, int));
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| 60 |
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| 61 | static bool DumpVariables();
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| 62 | static bool DumpFunctions();
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| 63 | static bool DumpFunmap();
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| 64 | static bool DumpHistory();
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| 65 |
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| 66 | virtual bool PrintGeneralHelp();
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| 67 | virtual bool PrintCommands();
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| 68 | virtual bool PrintKeyBindings();
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| 69 |
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| 70 | // History functions
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| 71 | std::string GetName() const { return fName; }
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| 72 |
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| 73 | void AddToHistory(const std::string &str, int skip=2);
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| 74 | static bool ClearHistory();
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| 75 | std::vector<const char*> GetHistory() const;
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| 76 |
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| 77 | void SetMaxSize(int lines) { fMaxLines = lines; }
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| 78 |
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| 79 | // Prompting
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| 80 | void UpdatePrompt(const std::string &prompt) const;
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| 81 | void UpdatePrompt() const { UpdatePrompt(GetUpdatePrompt()); }
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| 82 |
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| 83 | virtual bool Process(const std::string &str);
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| 84 | virtual std::string GetUpdatePrompt() const { return ""; }
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| 85 | virtual bool PromptEOF(std::string &str);
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| 86 | virtual std::string Prompt(const std::string &prompt);
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| 87 | virtual void Run(const char *prompt=0);
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| 88 | static void Stop();
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| 89 | int Execute(const std::string &fname);
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| 90 |
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| 91 | int GetLine() const { return fLine; }
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| 92 | virtual std::string GetLinePrompt() const;
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| 93 |
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| 94 | // Helper
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| 95 | static char *Compare(const std::string &str, const std::string &txt);
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| 96 | static char **CompletionMatches(const char *text, char *(*func)(const char*, int));
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| 97 |
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| 98 | // I/O Streams
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| 99 | static FILE *SetStreamOut(FILE *f);
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| 100 | static FILE *SetStreamIn(FILE *f);
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| 101 |
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| 102 | // Other global readline variables
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| 103 | static std::string GetPrompt();
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| 104 | static std::string GetBuffer();
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| 105 | static int GetAbsCursor();
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| 106 | static int GetCursor();
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| 107 | static int GetBufferLength();
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| 108 | static int GetLineLength();
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| 109 |
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| 110 | // Screen size
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| 111 | static void Resize();
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| 112 | static void Resize(int w, int h);
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| 113 | int GetCols() const;
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| 114 | int GetRows() const;
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| 115 |
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| 116 | };
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| 117 |
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| 118 | #endif
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