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juce_LocalisedStrings.cpp
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2022 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 The code included in this file is provided under the terms of the ISC license
11 http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12 To use, copy, modify, and/or distribute this software for any purpose with or
13 without fee is hereby granted provided that the above copyright notice and
14 this permission notice appear in all copies.
15
16 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18 DISCLAIMED.
19
20 ==============================================================================
21*/
22
23 namespace juce
24{
25
26 LocalisedStrings::LocalisedStrings (const String& fileContents, bool ignoreCase)
27{
28 loadFromText (fileContents, ignoreCase);
29}
30
31 LocalisedStrings::LocalisedStrings (const File& fileToLoad, bool ignoreCase)
32{
33 loadFromText (fileToLoad.loadFileAsString(), ignoreCase);
34}
35
36 LocalisedStrings::LocalisedStrings (const LocalisedStrings& other)
37 : languageName (other.languageName), countryCodes (other.countryCodes),
38 translations (other.translations), fallback (createCopyIfNotNull (other.fallback.get()))
39{
40}
41
42LocalisedStrings& LocalisedStrings::operator= (const LocalisedStrings& other)
43{
44 languageName = other.languageName;
45 countryCodes = other.countryCodes;
46 translations = other.translations;
47 fallback.reset (createCopyIfNotNull (other.fallback.get()));
48 return *this;
49}
50
51//==============================================================================
52 String LocalisedStrings::translate (const String& text) const
53{
54 if (fallback != nullptr && ! translations.containsKey (text))
55 return fallback->translate (text);
56
57 return translations.getValue (text, text);
58}
59
60 String LocalisedStrings::translate (const String& text, const String& resultIfNotFound) const
61{
62 if (fallback != nullptr && ! translations.containsKey (text))
63 return fallback->translate (text, resultIfNotFound);
64
65 return translations.getValue (text, resultIfNotFound);
66}
67
68 namespace
69{
70 #if JUCE_CHECK_MEMORY_LEAKS
71 // By using this object to force a LocalisedStrings object to be created
72 // before the currentMappings object, we can force the static order-of-destruction to
73 // delete the currentMappings object first, which avoids a bogus leak warning.
74 // (Oddly, just creating a LocalisedStrings on the stack doesn't work in gcc, it
75 // has to be created with 'new' for this to work..)
76 struct LeakAvoidanceTrick
77 {
78 LeakAvoidanceTrick()
79 {
80 const std::unique_ptr<LocalisedStrings> dummy (new LocalisedStrings (String(), false));
81 }
82 };
83
84 LeakAvoidanceTrick leakAvoidanceTrick;
85 #endif
86
87 SpinLock currentMappingsLock;
88 std::unique_ptr<LocalisedStrings> currentMappings;
89
90 static int findCloseQuote (const String& text, int startPos)
91 {
92 juce_wchar lastChar = 0;
93 auto t = text.getCharPointer() + startPos;
94
95 for (;;)
96 {
97 auto c = t.getAndAdvance();
98
99 if (c == 0 || (c == '"' && lastChar != '\\'))
100 break;
101
102 lastChar = c;
103 ++startPos;
104 }
105
106 return startPos;
107 }
108
109 static String unescapeString (const String& s)
110 {
111 return s.replace ("\\\"", "\"")
112 .replace ("\\\'", "\'")
113 .replace ("\\t", "\t")
114 .replace ("\\r", "\r")
115 .replace ("\\n", "\n");
116 }
117}
118
119 void LocalisedStrings::loadFromText (const String& fileContents, bool ignoreCase)
120{
121 translations.setIgnoresCase (ignoreCase);
122
123 StringArray lines;
124 lines.addLines (fileContents);
125
126 for (auto& l : lines)
127 {
128 auto line = l.trim();
129
130 if (line.startsWithChar ('"'))
131 {
132 auto closeQuote = findCloseQuote (line, 1);
133 auto originalText = unescapeString (line.substring (1, closeQuote));
134
135 if (originalText.isNotEmpty())
136 {
137 auto openingQuote = findCloseQuote (line, closeQuote + 1);
138 closeQuote = findCloseQuote (line, openingQuote + 1);
139 auto newText = unescapeString (line.substring (openingQuote + 1, closeQuote));
140
141 if (newText.isNotEmpty())
142 translations.set (originalText, newText);
143 }
144 }
145 else if (line.startsWithIgnoreCase ("language:"))
146 {
147 languageName = line.substring (9).trim();
148 }
149 else if (line.startsWithIgnoreCase ("countries:"))
150 {
151 countryCodes.addTokens (line.substring (10).trim(), true);
152 countryCodes.trim();
153 countryCodes.removeEmptyStrings();
154 }
155 }
156
157 translations.minimiseStorageOverheads();
158}
159
160 void LocalisedStrings::addStrings (const LocalisedStrings& other)
161{
162 jassert (languageName == other.languageName);
163 jassert (countryCodes == other.countryCodes);
164
165 translations.addArray (other.translations);
166}
167
168 void LocalisedStrings::setFallback (LocalisedStrings* f)
169{
170 fallback.reset (f);
171}
172
173//==============================================================================
174 void LocalisedStrings::setCurrentMappings (LocalisedStrings* newTranslations)
175{
176 const SpinLock::ScopedLockType sl (currentMappingsLock);
177 currentMappings.reset (newTranslations);
178}
179
180 LocalisedStrings* LocalisedStrings::getCurrentMappings()
181{
182 return currentMappings.get();
183}
184
185 String LocalisedStrings::translateWithCurrentMappings (const String& text) { return juce::translate (text); }
186 String LocalisedStrings::translateWithCurrentMappings (const char* text) { return juce::translate (text); }
187
188JUCE_API String translate (const String& text) { return juce::translate (text, text); }
189JUCE_API String translate (const char* text) { return juce::translate (String (text)); }
190JUCE_API String translate (CharPointer_UTF8 text) { return juce::translate (String (text)); }
191
192JUCE_API String translate (const String& text, const String& resultIfNotFound)
193{
194 const SpinLock::ScopedLockType sl (currentMappingsLock);
195
196 if (auto* mappings = LocalisedStrings::getCurrentMappings())
197 return mappings->translate (text, resultIfNotFound);
198
199 return resultIfNotFound;
200}
201
202} // namespace juce
juce::File
Definition juce_File.h:45
juce::File::loadFileAsString
String loadFileAsString() const
Definition juce_File.cpp:556
juce::GenericScopedLock
Definition juce_ScopedLock.h:55
juce::LocalisedStrings
Definition juce_LocalisedStrings.h:72
juce::LocalisedStrings::setCurrentMappings
static void setCurrentMappings(LocalisedStrings *newTranslations)
Definition juce_LocalisedStrings.cpp:174
juce::LocalisedStrings::translateWithCurrentMappings
static String translateWithCurrentMappings(const String &text)
Definition juce_LocalisedStrings.cpp:185
juce::LocalisedStrings::translate
String translate(const String &text) const
Definition juce_LocalisedStrings.cpp:52
juce::LocalisedStrings::getCurrentMappings
static LocalisedStrings * getCurrentMappings()
Definition juce_LocalisedStrings.cpp:180
juce::LocalisedStrings::addStrings
void addStrings(const LocalisedStrings &)
Definition juce_LocalisedStrings.cpp:160
juce::LocalisedStrings::LocalisedStrings
LocalisedStrings(const String &fileContents, bool ignoreCaseOfKeys)
Definition juce_LocalisedStrings.cpp:26
juce::LocalisedStrings::setFallback
void setFallback(LocalisedStrings *fallbackStrings)
Definition juce_LocalisedStrings.cpp:168
juce::SpinLock::ScopedLockType
GenericScopedLock< SpinLock > ScopedLockType
Definition juce_SpinLock.h:73
juce::StringArray::removeEmptyStrings
void removeEmptyStrings(bool removeWhitespaceStrings=true)
Definition juce_StringArray.cpp:250
juce::StringArray::trim
void trim()
Definition juce_StringArray.cpp:266
juce::StringArray::addTokens
int addTokens(StringRef stringToTokenise, bool preserveQuotedStrings)
Definition juce_StringArray.cpp:329
juce::StringPairArray::setIgnoresCase
void setIgnoresCase(bool shouldIgnoreCase)
Definition juce_StringPairArray.cpp:139
juce::StringPairArray::getValue
String getValue(StringRef, const String &defaultReturnValue) const
Definition juce_StringPairArray.cpp:86
juce::StringPairArray::containsKey
bool containsKey(StringRef key) const noexcept
Definition juce_StringPairArray.cpp:96
juce::StringPairArray::set
void set(const String &key, const String &value)
Definition juce_StringPairArray.cpp:101
juce::StringPairArray::minimiseStorageOverheads
void minimiseStorageOverheads()
Definition juce_StringPairArray.cpp:164
juce::StringPairArray::addArray
void addArray(const StringPairArray &other)
Definition juce_StringPairArray.cpp:116
juce::String
Definition juce_String.h:53
juce::String::trim
String trim() const
Definition juce_String.cpp:1656
juce::String::substring
String substring(int startIndex, int endIndex) const
Definition juce_String.cpp:1498