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
|
/**
* @file lluistring.h
* @author: Steve Bennetts
* @brief A fancy wrapper for std::string supporting argument substitutions.
*
* $LicenseInfo:firstyear=2006&license=viewergpl$
*
* Copyright (c) 2006-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLUISTRING_H
#define LL_LLUISTRING_H
#include "llstring.h"
#include <string>
// Use this class to store translated text that may have arguments
// e.g. "Welcome [USERNAME] to [SECONDLIFE]!"
// Adding or changing an argument will update the result string, preserving the origianl
// Thus, subsequent changes to arguments or even the original string will produce
// the correct result
// Example Usage:
// LLUIString mMessage("Welcome [USERNAME] to [SECONDLIFE]!");
// mMessage.setArg("[USERNAME]", "Steve");
// mMessage.setArg("[SECONDLIFE]", "Second Life");
// llinfos << mMessage.getString() << llendl; // outputs "Welcome Steve to Second Life"
// mMessage.setArg("[USERNAME]", "Joe");
// llinfos << mMessage.getString() << llendl; // outputs "Welcome Joe to Second Life"
// mMessage = "Bienvenido a la [SECONDLIFE] [USERNAME]"
// mMessage.setArg("[SECONDLIFE]", "Segunda Vida");
// llinfos << mMessage.getString() << llendl; // outputs "Bienvenido a la Segunda Vida Joe"
// Implementation Notes:
// Attempting to have operator[](const std::string& s) return mArgs[s] fails because we have
// to call format() after the assignment happens.
class LLUIString
{
public:
// These methods all perform appropriate argument substitution
// and modify mOrig where appropriate
LLUIString() : mArgs(NULL), mNeedsResult(false), mNeedsWResult(false) {}
LLUIString(const std::string& instring, const LLStringUtil::format_map_t& args);
LLUIString(const std::string& instring) : mArgs(NULL) { assign(instring); }
void assign(const std::string& instring);
LLUIString& operator=(const std::string& s) { assign(s); return *this; }
void setArgList(const LLStringUtil::format_map_t& args);
void setArgs(const LLStringUtil::format_map_t& args) { setArgList(args); }
void setArgs(const class LLSD& sd);
void setArg(const std::string& key, const std::string& replacement);
const std::string& getString() const { return getUpdatedResult(); }
operator std::string() const { return getUpdatedResult(); }
const LLWString& getWString() const { return getUpdatedWResult(); }
operator LLWString() const { return getUpdatedWResult(); }
bool empty() const { return getUpdatedResult().empty(); }
S32 length() const { return getUpdatedWResult().size(); }
void clear();
void clearArgs() { if (mArgs) mArgs->clear(); }
// These utility functions are included for text editing.
// They do not affect mOrig and do not perform argument substitution
void truncate(S32 maxchars);
void erase(S32 charidx, S32 len);
void insert(S32 charidx, const LLWString& wchars);
void replace(S32 charidx, llwchar wc);
private:
// something changed, requiring reformatting of strings
void dirty();
std::string& getUpdatedResult() const { if (mNeedsResult) { updateResult(); } return mResult; }
LLWString& getUpdatedWResult() const{ if (mNeedsWResult) { updateWResult(); } return mWResult; }
// do actual work of updating strings (non-inlined)
void updateResult() const;
void updateWResult() const;
LLStringUtil::format_map_t& getArgs();
std::string mOrig;
mutable std::string mResult;
mutable LLWString mWResult; // for displaying
LLStringUtil::format_map_t* mArgs;
// controls lazy evaluation
mutable bool mNeedsResult;
mutable bool mNeedsWResult;
};
#endif // LL_LLUISTRING_H
|
