File: ConsoleHistory.cpp

package info (click to toggle)
spring 98.0%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 41,928 kB
  • ctags: 60,665
  • sloc: cpp: 356,167; ansic: 39,434; python: 12,228; java: 12,203; awk: 5,856; sh: 1,719; xml: 997; perl: 405; php: 253; objc: 194; makefile: 72; sed: 2
file content (131 lines) | stat: -rw-r--r-- 2,263 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */

#include "ConsoleHistory.h"


const unsigned int CConsoleHistory::MAX_LINES = 256;


CConsoleHistory::CConsoleHistory()
{
	lines.push_back(""); // queue is never empty
	ResetPosition();
	return;
}


CConsoleHistory::~CConsoleHistory()
{
	return;
}


void CConsoleHistory::ResetPosition()
{
	pos = lines.end();
	return;
}


bool CConsoleHistory::AddLine(const std::string& msg)
{
	std::string message;
	if ((msg.find_first_of("aAsS") == 0) && (msg[1] == ':')) {
		message = msg.substr(2);
	} else {
		message = msg;
	}
	return AddLineRaw(message);
}

	
bool CConsoleHistory::AddLineRaw(const std::string& msg)
{
	if (msg.empty()) {
		return false; // do not save blank lines
	}
	if (lines.back() == msg) {
		return false; // do not save duplicates
	}
	  
	if (lines.size() >= MAX_LINES) {
		if (pos != lines.begin()) {
			lines.pop_front();
		} else {
			lines.pop_front();
			pos = lines.begin();
		}
	}

	lines.push_back(msg);

	return true;
}


std::string CConsoleHistory::NextLine(const std::string& current)
{
	std::string prefix, message;
	if ((current.find_first_of("aAsS") == 0) && (current[1] == ':')) {
		prefix  = current.substr(0, 2);
		message = current.substr(2);
	} else {
		message = current;
	}
	
	if (pos == lines.end()) {
		AddLineRaw(message);
		pos = lines.end();
		return prefix;
	}

	if (*pos != message) {
		if (pos != --lines.end()) {
			AddLineRaw(message);
		} else {
			if (AddLineRaw(message)) {
				pos = lines.end();
				return prefix;
			}
		}
	}

	++pos;

	if (pos == lines.end()) {
		return prefix;
	}

	return prefix + *pos;
}


std::string CConsoleHistory::PrevLine(const std::string& current)
{
	std::string prefix, message;
	if ((current.find_first_of("aAsS") == 0) && (current[1] == ':')) {
		prefix  = current.substr(0, 2);
		message = current.substr(2);
	} else {
		message = current;
	}
	
	if (pos == lines.begin()) {
		if (*pos != message) {
			AddLineRaw(message);
			pos = lines.begin();
		}
		return prefix;
	}

	if ((pos == lines.end()) || (*pos != message)) {
		AddLineRaw(message);
		if (pos == lines.begin()) {
			return prefix; // AddLineRaw() will adjust begin() iterators when it rolls
		}
	}

	--pos;

	return prefix + *pos;
}