Also handle string concatenation

master
Vitaliy Filippov 2021-08-28 15:06:48 +03:00
parent c89e963359
commit 700fa827cc
1 changed files with 126 additions and 22 deletions

148
index.js
View File

@ -5,8 +5,34 @@ module.exports = function(babel)
const t = babel.types;
const importAdded = new WeakSet();
const arg0 = new WeakSet();
const regexp = new WeakMap();
const ru = /[А-ЯЁа-яё]/;
const strings = {};
const getRegexp = function(state)
{
let re = regexp.get(state.opts);
if (!re)
{
re = new RegExp(state.opts.regexp || '[А-ЯЁа-яё]');
regexp.set(state.opts, re);
}
return re;
};
const splitWhite = function(str)
{
let l = /^\s+/.exec(str), r = /\s+$/.exec(str);
l = l ? l[0] : '';
r = r ? r[0] : '';
return [ l, str.substr(l.length, str.length-r.length-l.length), r ];
};
const withWhite = function(l, repl, r)
{
if (l)
repl = t.binaryExpression('+', t.stringLiteral(l), repl);
if (r)
repl = t.binaryExpression('+', repl, t.stringLiteral(r));
return repl;
};
const addString = function(path, str)
{
strings[path.hub.file.opts.filename][str] = str;
@ -44,26 +70,98 @@ module.exports = function(babel)
}
if (!found)
delete strings[path.hub.file.opts.filename];
const arrays = { ...strings };
for (let k in arrays)
arrays[k] = Object.keys(arrays[k]);
fs.writeFileSync(
path.hub.file.opts.root+'/'+(state.opts['output'] || 'react-translate-output.json'),
JSON.stringify(strings, null, 2)
JSON.stringify(arrays, null, 2)
);
},
},
Literal(path)
// Convert concatenated string literals and expressions to localization calls with arguments
// I.e. 'Really delete '+item.name+'?' -> L('Really delete {1}?', item.name)
BinaryExpression(path, state)
{
if (path.node.operator === '+')
{
let added = [ path.node.left, path.node.right ];
for (let i = 0; i < added.length; i++)
{
if (t.isBinaryExpression(added[i]) && added[i].operator === '+')
{
added.splice(i, 1, added[i].left, added[i].right);
i--;
}
}
let ru = getRegexp(state);
let i18n = false;
for (let i = 0; i < added.length; i++)
{
if (t.isStringLiteral(added[i]) && ru.exec(added[i].value))
{
i18n = true;
break;
}
}
if (i18n)
{
let tpl = '', expressions = [];
let lit = true, i = 0;
while (i < added.length)
{
if (lit)
{
let text = '';
while (i < added.length && t.isStringLiteral(added[i]))
text += added[i++].value;
tpl += text;
}
else
{
let expr = null;
while (i < added.length && !t.isStringLiteral(added[i]))
expr = expr ? t.binaryExpression('+', expr, added[i++]) : added[i++];
expressions.push(expr);
tpl += '{'+expressions.length+'}';
}
lit = !lit;
}
let [ lwhite, text, rwhite ] = splitWhite(tpl);
addString(path, text);
text = t.stringLiteral(text);
// Stop the string literal from being visited again
arg0.add(text);
let repl = t.callExpression(t.identifier('L'), [ text, ...expressions ]);
repl = withWhite(lwhite, repl, rwhite);
path.replaceWith(repl);
}
}
},
// Convert simple string literals to localization calls
// I.e. "Hello" -> L("Hello")
Literal(path, state)
{
let ru = getRegexp(state);
if (ru.exec(path.node.value))
{
addString(path, path.node.value);
addImport(path);
const parent = path.findParent(() => true);
if (parent.isJSXAttribute())
path.replaceWith(t.jsxExpressionContainer(t.callExpression(t.identifier('L'), [ path.node ])));
else if (!arg0.has(path.node) && !path.findParent(parent => arg0.has(parent.node)))
const isJSX = parent.isJSXAttribute();
if (isJSX || !arg0.has(path.node) && !path.findParent(parent => arg0.has(parent.node)))
{
// Stop the original string from being visited again
arg0.add(path.node);
path.replaceWith(t.callExpression(t.identifier('L'), [ path.node ]));
const [ lwhite, text, rwhite ] = splitWhite(path.node.value);
addString(path, text);
addImport(path);
let repl = t.callExpression(t.identifier('L'), [ t.stringLiteral(text) ]);
repl = withWhite(lwhite, repl, rwhite);
if (isJSX)
path.replaceWith(t.jsxExpressionContainer(repl));
else
{
// Stop the original string from being visited again
arg0.add(repl);
path.replaceWith(repl);
}
}
}
},
@ -75,38 +173,44 @@ module.exports = function(babel)
arg0.add(path.node.arguments[0]);
}
},
JSXText(path)
// Convert simple JSX literals to localization calls
// I.e. <b>Text</b> -> <b>{L("Text")}</b>
JSXText(path, state)
{
let ru = getRegexp(state);
if (ru.exec(path.node.value))
{
const [ lwhite, text, rwhite ] = splitWhite(path.node.value);
addImport(path);
const lwhite = /^\s+/.exec(path.node.value);
const rwhite = /\s+$/.exec(path.node.value);
const llen = lwhite ? lwhite[0].length : 0;
const text = path.node.value.substr(llen, path.node.value.length - llen - (rwhite ? rwhite[0].length : 0));
addString(path, text);
const repl = [];
if (lwhite)
repl.push(t.jsxText(lwhite[0]));
repl.push(t.jsxText(lwhite));
repl.push(t.jsxExpressionContainer(t.callExpression(t.identifier('L'), [ t.stringLiteral(text) ])));
if (rwhite)
repl.push(t.jsxText(rwhite[0]));
repl.push(t.jsxText(rwhite));
path.replaceWithMultiple(repl);
}
},
TemplateLiteral(path)
// Convert template literals to localization calls with arguments
// I.e. `Really delete ${item.name}?` -> L("Really delete {1}?", item.name)
TemplateLiteral(path, state)
{
let ru = getRegexp(state);
if (path.node.quasis.find(q => ru.exec(q.value.cooked)))
{
addImport(path);
let text = path.node.quasis[0].value.cooked;
let tpl = path.node.quasis[0].value.cooked;
for (let i = 1; i < path.node.quasis.length; i++)
text += '{'+i+'}'+path.node.quasis[i].value.cooked;
tpl += '{'+i+'}'+path.node.quasis[i].value.cooked;
let [ lwhite, text, rwhite ] = splitWhite(tpl);
addString(path, text);
// Stop the string literal from being visited again
text = t.stringLiteral(text);
// Stop the string literal from being visited again
arg0.add(text);
path.replaceWith(t.callExpression(t.identifier('L'), [ text, ...path.node.expressions ]));
let repl = t.callExpression(t.identifier('L'), [ text, ...path.node.expressions ]);
repl = withWhite(lwhite, repl, rwhite);
path.replaceWith(repl);
}
},
},