261 lines
11 KiB
JavaScript
261 lines
11 KiB
JavaScript
import { Fragment, isValidElement, cloneElement, createElement, Children } from 'react';
|
|
import HTML from 'html-parse-stringify';
|
|
import { isObject, isString, warn, warnOnce } from './utils.js';
|
|
import { getDefaults } from './defaults.js';
|
|
import { getI18n } from './i18nInstance.js';
|
|
const hasChildren = (node, checkLength) => {
|
|
if (!node) return false;
|
|
const base = node.props ? node.props.children : node.children;
|
|
if (checkLength) return base.length > 0;
|
|
return !!base;
|
|
};
|
|
const getChildren = node => {
|
|
if (!node) return [];
|
|
const children = node.props ? node.props.children : node.children;
|
|
return node.props && node.props.i18nIsDynamicList ? getAsArray(children) : children;
|
|
};
|
|
const hasValidReactChildren = children => Array.isArray(children) && children.every(isValidElement);
|
|
const getAsArray = data => Array.isArray(data) ? data : [data];
|
|
const mergeProps = (source, target) => {
|
|
const newTarget = {
|
|
...target
|
|
};
|
|
newTarget.props = Object.assign(source.props, target.props);
|
|
return newTarget;
|
|
};
|
|
export const nodesToString = (children, i18nOptions) => {
|
|
if (!children) return '';
|
|
let stringNode = '';
|
|
const childrenArray = getAsArray(children);
|
|
const keepArray = i18nOptions.transSupportBasicHtmlNodes && i18nOptions.transKeepBasicHtmlNodesFor ? i18nOptions.transKeepBasicHtmlNodesFor : [];
|
|
childrenArray.forEach((child, childIndex) => {
|
|
if (isString(child)) {
|
|
stringNode += `${child}`;
|
|
} else if (isValidElement(child)) {
|
|
const {
|
|
props,
|
|
type
|
|
} = child;
|
|
const childPropsCount = Object.keys(props).length;
|
|
const shouldKeepChild = keepArray.indexOf(type) > -1;
|
|
const childChildren = props.children;
|
|
if (!childChildren && shouldKeepChild && !childPropsCount) {
|
|
stringNode += `<${type}/>`;
|
|
} else if (!childChildren && (!shouldKeepChild || childPropsCount) || props.i18nIsDynamicList) {
|
|
stringNode += `<${childIndex}></${childIndex}>`;
|
|
} else if (shouldKeepChild && childPropsCount === 1 && isString(childChildren)) {
|
|
stringNode += `<${type}>${childChildren}</${type}>`;
|
|
} else {
|
|
const content = nodesToString(childChildren, i18nOptions);
|
|
stringNode += `<${childIndex}>${content}</${childIndex}>`;
|
|
}
|
|
} else if (child === null) {
|
|
warn(`Trans: the passed in value is invalid - seems you passed in a null child.`);
|
|
} else if (isObject(child)) {
|
|
const {
|
|
format,
|
|
...clone
|
|
} = child;
|
|
const keys = Object.keys(clone);
|
|
if (keys.length === 1) {
|
|
const value = format ? `${keys[0]}, ${format}` : keys[0];
|
|
stringNode += `{{${value}}}`;
|
|
} else {
|
|
warn(`react-i18next: the passed in object contained more than one variable - the object should look like {{ value, format }} where format is optional.`, child);
|
|
}
|
|
} else {
|
|
warn(`Trans: the passed in value is invalid - seems you passed in a variable like {number} - please pass in variables for interpolation as full objects like {{number}}.`, child);
|
|
}
|
|
});
|
|
return stringNode;
|
|
};
|
|
const renderNodes = (children, targetString, i18n, i18nOptions, combinedTOpts, shouldUnescape) => {
|
|
if (targetString === '') return [];
|
|
const keepArray = i18nOptions.transKeepBasicHtmlNodesFor || [];
|
|
const emptyChildrenButNeedsHandling = targetString && new RegExp(keepArray.map(keep => `<${keep}`).join('|')).test(targetString);
|
|
if (!children && !emptyChildrenButNeedsHandling && !shouldUnescape) return [targetString];
|
|
const data = {};
|
|
const getData = childs => {
|
|
const childrenArray = getAsArray(childs);
|
|
childrenArray.forEach(child => {
|
|
if (isString(child)) return;
|
|
if (hasChildren(child)) getData(getChildren(child));else if (isObject(child) && !isValidElement(child)) Object.assign(data, child);
|
|
});
|
|
};
|
|
getData(children);
|
|
const ast = HTML.parse(`<0>${targetString}</0>`);
|
|
const opts = {
|
|
...data,
|
|
...combinedTOpts
|
|
};
|
|
const renderInner = (child, node, rootReactNode) => {
|
|
const childs = getChildren(child);
|
|
const mappedChildren = mapAST(childs, node.children, rootReactNode);
|
|
return hasValidReactChildren(childs) && mappedChildren.length === 0 || child.props && child.props.i18nIsDynamicList ? childs : mappedChildren;
|
|
};
|
|
const pushTranslatedJSX = (child, inner, mem, i, isVoid) => {
|
|
if (child.dummy) {
|
|
child.children = inner;
|
|
mem.push(cloneElement(child, {
|
|
key: i
|
|
}, isVoid ? undefined : inner));
|
|
} else {
|
|
mem.push(...Children.map([child], c => {
|
|
const props = {
|
|
...c.props
|
|
};
|
|
delete props.i18nIsDynamicList;
|
|
return createElement(c.type, {
|
|
...props,
|
|
key: i,
|
|
ref: c.ref
|
|
}, isVoid ? null : inner);
|
|
}));
|
|
}
|
|
};
|
|
const mapAST = (reactNode, astNode, rootReactNode) => {
|
|
const reactNodes = getAsArray(reactNode);
|
|
const astNodes = getAsArray(astNode);
|
|
return astNodes.reduce((mem, node, i) => {
|
|
const translationContent = node.children && node.children[0] && node.children[0].content && i18n.services.interpolator.interpolate(node.children[0].content, opts, i18n.language);
|
|
if (node.type === 'tag') {
|
|
let tmp = reactNodes[parseInt(node.name, 10)];
|
|
if (rootReactNode.length === 1 && !tmp) tmp = rootReactNode[0][node.name];
|
|
if (!tmp) tmp = {};
|
|
const child = Object.keys(node.attrs).length !== 0 ? mergeProps({
|
|
props: node.attrs
|
|
}, tmp) : tmp;
|
|
const isElement = isValidElement(child);
|
|
const isValidTranslationWithChildren = isElement && hasChildren(node, true) && !node.voidElement;
|
|
const isEmptyTransWithHTML = emptyChildrenButNeedsHandling && isObject(child) && child.dummy && !isElement;
|
|
const isKnownComponent = isObject(children) && Object.hasOwnProperty.call(children, node.name);
|
|
if (isString(child)) {
|
|
const value = i18n.services.interpolator.interpolate(child, opts, i18n.language);
|
|
mem.push(value);
|
|
} else if (hasChildren(child) || isValidTranslationWithChildren) {
|
|
const inner = renderInner(child, node, rootReactNode);
|
|
pushTranslatedJSX(child, inner, mem, i);
|
|
} else if (isEmptyTransWithHTML) {
|
|
const inner = mapAST(reactNodes, node.children, rootReactNode);
|
|
pushTranslatedJSX(child, inner, mem, i);
|
|
} else if (Number.isNaN(parseFloat(node.name))) {
|
|
if (isKnownComponent) {
|
|
const inner = renderInner(child, node, rootReactNode);
|
|
pushTranslatedJSX(child, inner, mem, i, node.voidElement);
|
|
} else if (i18nOptions.transSupportBasicHtmlNodes && keepArray.indexOf(node.name) > -1) {
|
|
if (node.voidElement) {
|
|
mem.push(createElement(node.name, {
|
|
key: `${node.name}-${i}`
|
|
}));
|
|
} else {
|
|
const inner = mapAST(reactNodes, node.children, rootReactNode);
|
|
mem.push(createElement(node.name, {
|
|
key: `${node.name}-${i}`
|
|
}, inner));
|
|
}
|
|
} else if (node.voidElement) {
|
|
mem.push(`<${node.name} />`);
|
|
} else {
|
|
const inner = mapAST(reactNodes, node.children, rootReactNode);
|
|
mem.push(`<${node.name}>${inner}</${node.name}>`);
|
|
}
|
|
} else if (isObject(child) && !isElement) {
|
|
const content = node.children[0] ? translationContent : null;
|
|
if (content) mem.push(content);
|
|
} else {
|
|
pushTranslatedJSX(child, translationContent, mem, i, node.children.length !== 1 || !translationContent);
|
|
}
|
|
} else if (node.type === 'text') {
|
|
const wrapTextNodes = i18nOptions.transWrapTextNodes;
|
|
const content = shouldUnescape ? i18nOptions.unescape(i18n.services.interpolator.interpolate(node.content, opts, i18n.language)) : i18n.services.interpolator.interpolate(node.content, opts, i18n.language);
|
|
if (wrapTextNodes) {
|
|
mem.push(createElement(wrapTextNodes, {
|
|
key: `${node.name}-${i}`
|
|
}, content));
|
|
} else {
|
|
mem.push(content);
|
|
}
|
|
}
|
|
return mem;
|
|
}, []);
|
|
};
|
|
const result = mapAST([{
|
|
dummy: true,
|
|
children: children || []
|
|
}], ast, getAsArray(children || []));
|
|
return getChildren(result[0]);
|
|
};
|
|
export function Trans(_ref) {
|
|
let {
|
|
children,
|
|
count,
|
|
parent,
|
|
i18nKey,
|
|
context,
|
|
tOptions = {},
|
|
values,
|
|
defaults,
|
|
components,
|
|
ns,
|
|
i18n: i18nFromProps,
|
|
t: tFromProps,
|
|
shouldUnescape,
|
|
...additionalProps
|
|
} = _ref;
|
|
const i18n = i18nFromProps || getI18n();
|
|
if (!i18n) {
|
|
warnOnce('You will need to pass in an i18next instance by using i18nextReactModule');
|
|
return children;
|
|
}
|
|
const t = tFromProps || i18n.t.bind(i18n) || (k => k);
|
|
const reactI18nextOptions = {
|
|
...getDefaults(),
|
|
...(i18n.options && i18n.options.react)
|
|
};
|
|
let namespaces = ns || t.ns || i18n.options && i18n.options.defaultNS;
|
|
namespaces = isString(namespaces) ? [namespaces] : namespaces || ['translation'];
|
|
const nodeAsString = nodesToString(children, reactI18nextOptions);
|
|
const defaultValue = defaults || nodeAsString || reactI18nextOptions.transEmptyNodeValue || i18nKey;
|
|
const {
|
|
hashTransKey
|
|
} = reactI18nextOptions;
|
|
const key = i18nKey || (hashTransKey ? hashTransKey(nodeAsString || defaultValue) : nodeAsString || defaultValue);
|
|
if (i18n.options && i18n.options.interpolation && i18n.options.interpolation.defaultVariables) {
|
|
values = values && Object.keys(values).length > 0 ? {
|
|
...values,
|
|
...i18n.options.interpolation.defaultVariables
|
|
} : {
|
|
...i18n.options.interpolation.defaultVariables
|
|
};
|
|
}
|
|
const interpolationOverride = values || count !== undefined || !children ? tOptions.interpolation : {
|
|
interpolation: {
|
|
...tOptions.interpolation,
|
|
prefix: '#$?',
|
|
suffix: '?$#'
|
|
}
|
|
};
|
|
const combinedTOpts = {
|
|
...tOptions,
|
|
context: context || tOptions.context,
|
|
count,
|
|
...values,
|
|
...interpolationOverride,
|
|
defaultValue,
|
|
ns: namespaces
|
|
};
|
|
const translation = key ? t(key, combinedTOpts) : defaultValue;
|
|
if (components) {
|
|
Object.keys(components).forEach(c => {
|
|
const comp = components[c];
|
|
if (typeof comp.type === 'function' || !comp.props || !comp.props.children || translation.indexOf(`${c}/>`) < 0 && translation.indexOf(`${c} />`) < 0) return;
|
|
function Componentized() {
|
|
return createElement(Fragment, null, comp);
|
|
}
|
|
components[c] = createElement(Componentized);
|
|
});
|
|
}
|
|
const content = renderNodes(components || children, translation, i18n, reactI18nextOptions, combinedTOpts, shouldUnescape);
|
|
const useAsParent = parent !== undefined ? parent : reactI18nextOptions.defaultTransParent;
|
|
return useAsParent ? createElement(useAsParent, additionalProps, content) : content;
|
|
} |