115 lines
4.4 KiB
JavaScript
115 lines
4.4 KiB
JavaScript
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const fs = require('fs');
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module.exports = function(babel)
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{
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const t = babel.types;
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const importAdded = new WeakSet();
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const arg0 = new WeakSet();
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const ru = /[А-ЯЁа-яё]/;
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const strings = {};
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const addString = function(path, str)
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{
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strings[path.hub.file.opts.filename][str] = str;
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};
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const addImport = function(path)
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{
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const program = path.findParent(p => t.isProgram(p));
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if (!program)
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{
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throw new Error('<Program> AST element not found, can\'t add import');
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}
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if (!importAdded.has(program))
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{
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program.unshiftContainer('body', t.importDeclaration(
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[ t.importSpecifier(t.identifier('L'), t.identifier('L')) ],
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t.stringLiteral('babel-plugin-react-translate/runtime')
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));
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importAdded.add(program);
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}
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};
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return {
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visitor: {
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Program: {
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enter(path, state)
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{
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strings[path.hub.file.opts.filename] = {};
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},
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exit(path, state)
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{
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let found = false;
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for (let k in strings[path.hub.file.opts.filename])
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{
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found = true;
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break;
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}
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if (!found)
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delete strings[path.hub.file.opts.filename];
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fs.writeFileSync(
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path.hub.file.opts.root+'/'+(state.opts['output'] || 'react-translate-output.json'),
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JSON.stringify(strings, null, 2)
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);
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},
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},
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Literal(path)
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{
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if (ru.exec(path.node.value))
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{
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addString(path, path.node.value);
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addImport(path);
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const parent = path.findParent(() => true);
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if (parent.isJSXAttribute())
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path.replaceWith(t.jsxExpressionContainer(t.callExpression(t.identifier('L'), [ path.node ])));
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else if (!arg0.has(path.node) && !path.findParent(parent => arg0.has(parent.node)))
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{
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// Stop the original string from being visited again
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arg0.add(path.node);
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path.replaceWith(t.callExpression(t.identifier('L'), [ path.node ]));
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}
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}
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},
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CallExpression(path)
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{
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if (path.node.callee.type === 'Identifier' && path.node.callee.name === 'L')
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{
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// Skip the first argument
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arg0.add(path.node.arguments[0]);
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}
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},
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JSXText(path)
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{
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if (ru.exec(path.node.value))
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{
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addImport(path);
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const lwhite = /^\s+/.exec(path.node.value);
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const rwhite = /\s+$/.exec(path.node.value);
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const llen = lwhite ? lwhite[0].length : 0;
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const text = path.node.value.substr(llen, path.node.value.length - llen - (rwhite ? rwhite[0].length : 0));
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addString(path, text);
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const repl = [];
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if (lwhite)
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repl.push(t.jsxText(lwhite[0]));
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repl.push(t.jsxExpressionContainer(t.callExpression(t.identifier('L'), [ t.stringLiteral(text) ])));
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if (rwhite)
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repl.push(t.jsxText(rwhite[0]));
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path.replaceWithMultiple(repl);
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}
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},
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TemplateLiteral(path)
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{
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if (path.node.quasis.find(q => ru.exec(q.value.cooked)))
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{
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addImport(path);
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let text = path.node.quasis[0].value.cooked;
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for (let i = 1; i < path.node.quasis.length; i++)
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text += '{'+i+'}'+path.node.quasis[i].value.cooked;
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addString(path, text);
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// Stop the string literal from being visited again
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text = t.stringLiteral(text);
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arg0.add(text);
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path.replaceWith(t.callExpression(t.identifier('L'), [ text, ...path.node.expressions ]));
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}
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},
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},
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};
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}
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