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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 /** | 5 /** |
6 * @fileoverview This file defines a singleton which provides access to all data | 6 * @fileoverview This file defines a singleton which provides access to all data |
7 * that is available as soon as the page's resources are loaded (before DOM | 7 * that is available as soon as the page's resources are loaded (before DOM |
8 * content has finished loading). This data includes both localized strings and | 8 * content has finished loading). This data includes both localized strings and |
9 * any data that is important to have ready from a very early stage (e.g. things | 9 * any data that is important to have ready from a very early stage (e.g. things |
10 * that must be displayed right away). | 10 * that must be displayed right away). |
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80 * @param {string} id The ID of the string we want. | 80 * @param {string} id The ID of the string we want. |
81 * @param {...(string|number)} var_args The extra values to include in the | 81 * @param {...(string|number)} var_args The extra values to include in the |
82 * formatted output. | 82 * formatted output. |
83 * @return {string} The formatted string. | 83 * @return {string} The formatted string. |
84 */ | 84 */ |
85 getStringF: function(id, var_args) { | 85 getStringF: function(id, var_args) { |
86 var value = this.getString(id); | 86 var value = this.getString(id); |
87 if (!value) | 87 if (!value) |
88 return ''; | 88 return ''; |
89 | 89 |
| 90 var args = Array.prototype.slice.call(arguments); |
| 91 args[0] = value; |
| 92 return this.substituteString.apply(this, args); |
| 93 }, |
| 94 |
| 95 /** |
| 96 * Returns a formatted localized string where $1 to $9 are replaced by the |
| 97 * second to the tenth argument. Any standalone $ signs must be escaped as |
| 98 * $$. |
| 99 * @param {string} label The label to substitute through. |
| 100 * This is not an resource ID. |
| 101 * @param {...(string|number)} var_args The extra values to include in the |
| 102 * formatted output. |
| 103 * @return {string} The formatted string. |
| 104 */ |
| 105 substituteString: function(label, var_args) { |
90 var varArgs = arguments; | 106 var varArgs = arguments; |
91 return value.replace(/\$[$1-9]/g, function(m) { | 107 return label.replace(/\$(.|$|\n)/g, function(m) { |
| 108 assert(m.match(/\$[$1-9]/), 'Unescaped $ found in localized string.'); |
92 return m == '$$' ? '$' : varArgs[m[1]]; | 109 return m == '$$' ? '$' : varArgs[m[1]]; |
93 }); | 110 }); |
94 }, | 111 }, |
95 | 112 |
96 /** | 113 /** |
| 114 * Returns a formatted string where $1 to $9 are replaced by the second to |
| 115 * tenth argument, split apart into a list of pieces describing how the |
| 116 * substitution was performed. Any standalone $ signs must be escaped as $$. |
| 117 * @param {string} label A localized string to substitute through. |
| 118 * This is not an resource ID. |
| 119 * @param {...(string|number)} var_args The extra values to include in the |
| 120 * formatted output. |
| 121 * @return {!Array<!{value: string, arg: (null|string)}>} The formatted |
| 122 * string pieces. |
| 123 */ |
| 124 getSubstitutedStringPieces: function(label, var_args) { |
| 125 var varArgs = arguments; |
| 126 // Split the string by separately matching all occurrences of $1-9 and of |
| 127 // non $1-9 pieces. |
| 128 var pieces = (label.match(/(\$[1-9])|(([^$]|\$([^1-9]|$))+)/g) || |
| 129 []).map(function(p) { |
| 130 // Pieces that are not $1-9 should be returned after replacing $$ |
| 131 // with $. |
| 132 if (!p.match(/^\$[1-9]$/)) { |
| 133 assert( |
| 134 (p.match(/\$/g) || []).length % 2 == 0, |
| 135 'Unescaped $ found in localized string.'); |
| 136 return {value: p.replace(/\$\$/g, '$'), arg: null}; |
| 137 } |
| 138 |
| 139 // Otherwise, return the substitution value. |
| 140 return {value: varArgs[p[1]], arg: p}; |
| 141 }); |
| 142 |
| 143 return pieces; |
| 144 }, |
| 145 |
| 146 /** |
97 * As above, but also makes sure that the value is a boolean. | 147 * As above, but also makes sure that the value is a boolean. |
98 * @param {string} id The key that identifies the desired boolean. | 148 * @param {string} id The key that identifies the desired boolean. |
99 * @return {boolean} The corresponding boolean value. | 149 * @return {boolean} The corresponding boolean value. |
100 */ | 150 */ |
101 getBoolean: function(id) { | 151 getBoolean: function(id) { |
102 var value = this.getValue(id); | 152 var value = this.getValue(id); |
103 expectIsType(id, value, 'boolean'); | 153 expectIsType(id, value, 'boolean'); |
104 return /** @type {boolean} */ (value); | 154 return /** @type {boolean} */ (value); |
105 }, | 155 }, |
106 | 156 |
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149 * @param {string} type The type we expect |value| to be. | 199 * @param {string} type The type we expect |value| to be. |
150 */ | 200 */ |
151 function expectIsType(id, value, type) { | 201 function expectIsType(id, value, type) { |
152 expect( | 202 expect( |
153 typeof value == type, '[' + value + '] (' + id + ') is not a ' + type); | 203 typeof value == type, '[' + value + '] (' + id + ') is not a ' + type); |
154 } | 204 } |
155 | 205 |
156 expect(!loadTimeData, 'should only include this file once'); | 206 expect(!loadTimeData, 'should only include this file once'); |
157 loadTimeData = new LoadTimeData; | 207 loadTimeData = new LoadTimeData; |
158 })(); | 208 })(); |
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