source: trunk/FACT++/src/Readline.h@ 14797

Last change on this file since 14797 was 14069, checked in by tbretz, 12 years ago
Added something to the EventHook which allows to post command from the outside.
File size: 4.8 KB
Line 
1#ifndef FACT_Readline
2#define FACT_Readline
3
4#include <map>
5#include <string>
6#include <vector>
7#include <fstream>
8
9class Readline
10{
11public:
12 static bool RedirectionWrapper(std::ostream &out, bool (*function)());
13
14protected:
15 /// A pointer to the unique instance of Readline to let the static
16 /// functions used as callback for readline call member function
17 /// with an object. This makes overwriting easier.
18 static Readline *This;
19
20private:
21 std::string fName; /// Filename for the history file compiled in the constructor
22 int fMaxLines; /// Maximum number of lines in the history file
23
24 std::ofstream fCommandLog;
25
26 std::string fLastLine; /// Last line adde to history
27
28 int fLine;
29 int fSection;
30 int fLabel;
31 static int fScriptDepth;
32 static bool fStopScript;
33
34 static std::string fExternalInput;
35
36 /// Static member function which are used to adapt readline to ncurses
37 static int rl_ncurses_getc(FILE *);
38 static int rl_ncurses_startup();
39 static void rl_ncurses_redisplay();
40 static int rl_ncurses_event_hook();
41 static void rl_ncurses_completion_display(char **matches, int num, int max);
42 static char **rl_ncurses_completion_function(const char *text, int start, int end);
43 static char *CompleteImp(const char* text, int state);
44
45
46protected:
47 static std::string fScript;
48
49 /// The non static implementations of the callback funtions above
50 virtual int Getc(FILE *);
51 virtual void Startup();
52 virtual void EventHook();
53 virtual void Shutdown(const char *buf);
54 virtual void Redisplay();
55 virtual void CompletionDisplay(char **matches, int num, int max);
56
57 /// Functions dealing with auto completion
58 virtual char *Complete(const char* text, int state);
59 virtual char **Completion(const char *text, int start, int end);
60
61 /// Pointer to a list of possible matched for auto-completion
62 const std::vector<std::string> *fCompletion;
63 void SetCompletion(const std::vector<std::string> *v) { fCompletion = v; }
64 char **Complete(const std::vector<std::string> &v, const char *text);
65
66 ///
67 virtual void SetSection(int) { }
68 virtual void PrintReadlineError(const std::string &str);
69
70public:
71 Readline(const char *prgname);
72 virtual ~Readline();
73
74 // Access to readline
75 void BindKeySequence(const char *seq, int (*func)(int, int));
76
77 static bool DumpVariables();
78 static bool DumpFunctions();
79 static bool DumpFunmap();
80 static bool DumpHistory();
81
82 virtual bool PrintGeneralHelp();
83 virtual bool PrintCommands();
84 virtual bool PrintKeyBindings();
85
86 // History functions
87 std::string GetName() const { return fName; }
88
89 void AddToHistory(const std::string &str, int skip=2);
90 static bool ClearHistory();
91 std::vector<const char*> GetHistory() const;
92
93 void SetMaxSize(int lines) { fMaxLines = lines; }
94
95 // Prompting
96 void UpdatePrompt(const std::string &prompt) const;
97 void UpdatePrompt() const { UpdatePrompt(GetUpdatePrompt()); }
98
99 virtual bool PreProcess(const std::string &str);
100 virtual bool Process(const std::string &str);
101 virtual std::string GetUpdatePrompt() const { return ""; }
102 virtual bool PromptEOF(std::string &str);
103 virtual std::string Prompt(const std::string &prompt);
104 virtual void Run(const char *prompt=0);
105 static void Stop();
106 virtual bool ExecuteShellCommand(const std::string &cmd);
107 int Execute(const std::string &fname, const std::map<std::string,std::string> &args=std::map<std::string,std::string>());
108 bool IsStopped() const;
109 void ProcessLine(const std::string &str);
110 void SetLabel(int l) { fLabel = l; }
111 static void StopScript() { fStopScript = true; }
112 static bool IsScriptStopped() { return fStopScript; }
113 static int GetScriptDepth() { return fScriptDepth; }
114 static void SetExternalInput(const std::string &inp) { fExternalInput = inp; }
115
116 static std::string GetScript() { return fScript; }
117 static std::string GetExternalInput() { return fExternalInput; }
118
119 int GetLine() const { return fLine; }
120 virtual std::string GetLinePrompt() const;
121
122 // Helper
123 static char *Compare(const std::string &str, const std::string &txt);
124 static char **CompletionMatches(const char *text, char *(*func)(const char*, int));
125
126 // I/O Streams
127 static FILE *SetStreamOut(FILE *f);
128 static FILE *SetStreamIn(FILE *f);
129
130 // Other global readline variables
131 static std::string GetPrompt();
132 static std::string GetBuffer();
133 static int GetAbsCursor();
134 static int GetCursor();
135 static int GetBufferLength();
136 static int GetLineLength();
137
138 // Screen size
139 static void Resize();
140 static void Resize(int w, int h);
141 int GetCols() const;
142 int GetRows() const;
143
144 static Readline *Instance() { return This; }
145};
146
147#endif
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