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fix(compiler): allow empty translations for attributes (#14085)
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fixes #13897
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vicb committed Jan 26, 2017
1 parent 3ef73c2 commit 05b2b49
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Showing 3 changed files with 52 additions and 6 deletions.
5 changes: 4 additions & 1 deletion modules/@angular/compiler/src/i18n/extractor_merger.ts
Original file line number Diff line number Diff line change
Expand Up @@ -327,6 +327,7 @@ class _Visitor implements html.Visitor {
}

// Translates the given message given the `TranslationBundle`
// This is used for translating elements / blocks - see `_translateAttributes` for attributes
// no-op when called in extraction mode (returns [])
private _translateMessage(el: html.Node, message: i18n.Message): html.Node[] {
if (message && this._mode === _VisitorMode.Merge) {
Expand Down Expand Up @@ -368,7 +369,9 @@ class _Visitor implements html.Visitor {
const message: i18n.Message = this._createI18nMessage([attr], meaning, '', '');
const nodes = this._translations.get(message);
if (nodes) {
if (nodes[0] instanceof html.Text) {
if (nodes.length == 0) {
translatedAttributes.push(new html.Attribute(attr.name, '', attr.sourceSpan));
} else if (nodes[0] instanceof html.Text) {
const value = (nodes[0] as html.Text).value;
translatedAttributes.push(new html.Attribute(attr.name, value, attr.sourceSpan));
} else {
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46 changes: 41 additions & 5 deletions modules/@angular/compiler/test/i18n/extractor_merger_spec.ts
Original file line number Diff line number Diff line change
Expand Up @@ -383,6 +383,24 @@ export function main() {
const HTML = `<div>before<p i18n="m|d">foo</p><!-- comment --></div>`;
expect(fakeTranslate(HTML)).toEqual('<div>before<p>**foo**</p></div>');
});

it('should merge empty messages', () => {
const HTML = `<div i18n>some element</div>`;
const htmlNodes: html.Node[] = parseHtml(HTML);
const messages: i18n.Message[] =
extractMessages(htmlNodes, DEFAULT_INTERPOLATION_CONFIG, [], {}).messages;

expect(messages.length).toEqual(1);
const i18nMsgMap: {[id: string]: i18n.Node[]} = {};
i18nMsgMap[digest(messages[0])] = [];
const translations = new TranslationBundle(i18nMsgMap, digest);

const output =
mergeTranslations(htmlNodes, translations, DEFAULT_INTERPOLATION_CONFIG, [], {});
expect(output.errors).toEqual([]);

expect(serializeHtmlNodes(output.rootNodes).join('')).toEqual(`<div></div>`);
});
});

describe('blocks', () => {
Expand Down Expand Up @@ -422,6 +440,25 @@ export function main() {
const HTML = `<p i18n-title="m|d" title=""></p>`;
expect(fakeTranslate(HTML)).toEqual('<p title=""></p>');
});

it('should merge empty attributes', () => {
const HTML = `<div i18n-title title="some attribute">some element</div>`;
const htmlNodes: html.Node[] = parseHtml(HTML);
const messages: i18n.Message[] =
extractMessages(htmlNodes, DEFAULT_INTERPOLATION_CONFIG, [], {}).messages;

expect(messages.length).toEqual(1);
const i18nMsgMap: {[id: string]: i18n.Node[]} = {};
i18nMsgMap[digest(messages[0])] = [];
const translations = new TranslationBundle(i18nMsgMap, digest);

const output =
mergeTranslations(htmlNodes, translations, DEFAULT_INTERPOLATION_CONFIG, [], {});
expect(output.errors).toEqual([]);

expect(serializeHtmlNodes(output.rootNodes).join(''))
.toEqual(`<div title="">some element</div>`);
});
});
});
}
Expand Down Expand Up @@ -453,12 +490,11 @@ function fakeTranslate(

const translations = new TranslationBundle(i18nMsgMap, digest);

const translatedNodes =
mergeTranslations(
htmlNodes, translations, DEFAULT_INTERPOLATION_CONFIG, implicitTags, implicitAttrs)
.rootNodes;
const output = mergeTranslations(
htmlNodes, translations, DEFAULT_INTERPOLATION_CONFIG, implicitTags, implicitAttrs);
expect(output.errors).toEqual([]);

return serializeHtmlNodes(translatedNodes).join('');
return serializeHtmlNodes(output.rootNodes).join('');
}

function extract(
Expand Down
7 changes: 7 additions & 0 deletions modules/@angular/compiler/test/i18n/serializers/xliff_spec.ts
Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,11 @@ const LOAD_XLIFF = `<?xml version="1.0" encoding="UTF-8" ?>
<target><x id="START_TAG_DIV" ctype="x-div"/><x id="CLOSE_TAG_DIV" ctype="x-div"/><x id="TAG_IMG" ctype="image"/><x id="LINE_BREAK" ctype="lb"/></target>
<note priority="1" from="description">ph names</note>
</trans-unit>
<trans-unit id="empty target" datatype="html">
<source><x id="LINE_BREAK" ctype="lb"/><x id="TAG_IMG" ctype="image"/><x id="START_TAG_DIV" ctype="x-div"/><x id="CLOSE_TAG_DIV" ctype="x-div"/></source>
<target/>
<note priority="1" from="description">ph names</note>
</trans-unit>
</body>
</file>
</xliff>
Expand All @@ -110,6 +115,7 @@ export function main(): void {

function loadAsMap(xliff: string): {[id: string]: string} {
const i18nNodesByMsgId = serializer.load(xliff, 'url');

const msgMap: {[id: string]: string} = {};
Object.keys(i18nNodesByMsgId)
.forEach(id => msgMap[id] = serializeNodes(i18nNodesByMsgId[id]).join(''));
Expand All @@ -133,6 +139,7 @@ export function main(): void {
'bar': 'tata',
'd7fa2d59aaedcaa5309f13028c59af8c85b8c49d':
'<ph name="START_TAG_DIV"/><ph name="CLOSE_TAG_DIV"/><ph name="TAG_IMG"/><ph name="LINE_BREAK"/>',
'empty target': '',
});
});

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