source: trunk/FACT++/src/Readline.h@ 20030

Last change on this file since 20030 was 20016, checked in by tbretz, 4 years ago
Readline 8 behaves differently. The best fix is to use the readline functions themselves and don't interfere... this does not work well for resizing for older readline libraries, but that neither worked proprly before.
File size: 5.1 KB
Line 
1#ifndef FACT_Readline
2#define FACT_Readline
3
4#include <map>
5#include <string>
6#include <vector>
7#include <fstream>
8#include <iostream>
9
10class Readline
11{
12public:
13 static bool RedirectionWrapper(std::ostream &out, bool (*function)());
14
15protected:
16 /// A pointer to the unique instance of Readline to let the static
17 /// functions used as callback for readline call member function
18 /// with an object. This makes overwriting easier.
19 static Readline *This;
20
21private:
22 std::string fName; /// Filename for the history file compiled in the constructor
23 int fMaxLines; /// Maximum number of lines in the history file
24
25 std::ofstream fCommandLog;
26
27 std::string fLastLine; /// Last line adde to history
28
29 int fLine;
30 int fSection;
31 int fLabel;
32 static int fScriptDepth;
33 static bool fStopScript;
34
35 static std::string fExternalInput;
36
37 /// Static member function which are used to adapt readline to ncurses
38 static int rl_ncurses_getc(FILE *);
39 static int rl_ncurses_startup();
40 //static void rl_ncurses_redisplay();
41 static int rl_ncurses_event_hook();
42 static void rl_ncurses_completion_display(char **matches, int num, int max);
43 static char **rl_ncurses_completion_function(const char *text, int start, int end);
44 static char *CompleteImp(const char* text, int state);
45
46
47protected:
48 static std::string fScript;
49
50 /// The non static implementations of the callback funtions above
51 virtual int Getc(FILE *);
52 virtual void Startup();
53 virtual void EventHook(bool newline=false);
54 virtual void Shutdown(const char *buf);
55 //virtual void Redisplay();
56 virtual void CompletionDisplay(char **matches, int num, int max);
57
58 /// Functions dealing with auto completion
59 virtual char *Complete(const char* text, int state);
60 virtual char **Completion(const char *text, int start, int end);
61
62 /// Pointer to a list of possible matched for auto-completion
63 const std::vector<std::string> *fCompletion;
64 void SetCompletion(const std::vector<std::string> *v) { fCompletion = v; }
65 char **Complete(const std::vector<std::string> &v, const char *text);
66
67 ///
68 virtual void SetSection(int) { }
69 virtual void PrintReadlineError(const std::string &str);
70
71public:
72 Readline(const char *prgname);
73 virtual ~Readline();
74
75 // Access to readline
76 void BindKeySequence(const char *seq, int (*func)(int, int));
77
78 static bool DumpVariables();
79 static bool DumpFunctions();
80 static bool DumpFunmap();
81 static bool DumpHistory();
82
83 virtual bool PrintGeneralHelp();
84 virtual bool PrintCommands();
85 virtual bool PrintKeyBindings();
86
87 // History functions
88 std::string GetName() const { return fName; }
89
90 void AddToHistory(const std::string &str, int skip=2);
91 static bool ClearHistory();
92 std::vector<const char*> GetHistory() const;
93
94 void SetMaxSize(int lines) { fMaxLines = lines; }
95
96 // Prompting
97 void UpdatePrompt(const std::string &prompt) const;
98 void UpdatePrompt() const { UpdatePrompt(GetUpdatePrompt()); }
99
100 virtual bool PreProcess(const std::string &str);
101 virtual bool Process(const std::string &str);
102 virtual std::string GetUpdatePrompt() const { return ""; }
103 virtual bool PromptEOF(std::string &str);
104 virtual std::string Prompt(const std::string &prompt);
105 virtual void Run(const char *prompt=0);
106 static void Stop();
107 virtual bool ExecuteShellCommand(const std::string &cmd);
108 int Execute(const std::string &fname, const std::map<std::string,std::string> &args=std::map<std::string,std::string>());
109 bool IsStopped() const;
110 void ProcessLine(const std::string &str);
111 void SetLabel(int l) { fLabel = l; }
112 static void StopScript() { fStopScript = true; }
113 static bool IsScriptStopped() { return fStopScript; }
114 static int GetScriptDepth() { return fScriptDepth; }
115 static void SetScriptDepth(unsigned int d) { fScriptDepth=d; }
116 static void SetExternalInput(const std::string &inp) { fExternalInput = inp; }
117
118 static std::string GetScript() { return fScript; }
119 static std::string GetExternalInput() { return fExternalInput; }
120
121 int GetLine() const { return fLine; }
122 virtual std::string GetLinePrompt() const;
123
124 // Helper
125 static char *Compare(const std::string &str, const std::string &txt);
126 static char **CompletionMatches(const char *text, char *(*func)(const char*, int));
127
128 // I/O Streams
129 static FILE *SetStreamOut(FILE *f);
130 static FILE *SetStreamIn(FILE *f);
131
132 // Other global readline variables
133 static std::string GetPrompt();
134 static std::string GetBuffer();
135 static int GetAbsCursor();
136 static int GetCursor();
137 static int GetBufferLength();
138 static int GetLineLength();
139
140 // Screen size
141 static void Resize();
142 static void Resize(int w, int h);
143 int GetCols() const;
144 int GetRows() const;
145
146 static Readline *Instance() { return This; }
147
148 static void StaticPushHistory(const std::string &fname);
149 static std::string StaticPrompt(const std::string &prompt);
150 static void StaticPopHistory(const std::string &fname);
151};
152
153#endif
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