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stencil.js
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"use strict";
exports.__esModule = true;
exports.REGEX_SECTIONS = /\{{2}(#|\^)([^}]+)\}{2}((.|\n)*?)\{{2}\/\2\}{2}(\n)?/gm;
exports.REGEX_INNER_SECTION = /\{{2}(#|\^)([^}]+)\}{2}/gm;
exports.REGEX_TEMPLATES = /\{{2}>([^}]+)\}{2}/g;
exports.REGEX_TAGS = /\{{2}([^}]+)\}{2,3}/gm;
exports.REGEX_HTML_CHARS = /[&<>"']/g;
exports.REGEX_LINK = /(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/gm;
exports.REGEX_VARS = /{|\$|}/gm;
exports.REGEX_HTML_TAGS = /<((\/|[a-zA-Z0-9="]){1})([^<>]*)>/gm;
exports.REGEX_UNICODE = /\\u[\dA-F]{4}/gi;
exports.HTML_CHAR_MAP = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": ''',
'`': '`'
};
exports.IGNORE_HTML_FILTERS = ['raw', 'linkify'];
exports.render = function (template, view, subTemplates) {
return exports.compileBlocks(template, view, subTemplates)
.split('\n')
.map(function (line) { return exports._compileTags(line, view); })
.join('\n');
};
exports._compileBlock = function (section, view, comparator) {
var mVar = section[2], inner = section[3];
var observe = comparator ? comparator : view[mVar];
var innerResult = '';
if (~inner.indexOf('{{.}}')) {
// All items in array
if (Array.isArray(observe)) {
observe.forEach(function (item) {
return (innerResult += inner.replace('{{.}}', item).trim() + '\n');
});
}
else if (typeof observe === 'object') {
// Section within a section
innerResult = exports.compileBlocks(inner, Object.assign({}, view, observe));
}
}
else {
// Check if we have variables that are part of the section
if (typeof observe[0] === 'object') {
observe.forEach(function (item) {
return (innerResult +=
exports._compileTags(inner, Object.assign({}, view, item)).trim() + '\n');
});
}
else if (!Array.isArray(observe)) {
innerResult += exports._compileTags(inner, Object.assign({}, view, observe));
}
}
return innerResult;
};
exports.compileBlocks = function (template, view, subTemplates) {
var nTemplate = template, section;
if (subTemplates) {
while ((section = new RegExp(exports.REGEX_TEMPLATES).exec(nTemplate)) !== null) {
var match = section[0], mVar = section[1];
mVar = mVar.trim();
nTemplate = subTemplates[mVar]
? nTemplate.replace(match, subTemplates[mVar])
: nTemplate.replace(match, '');
}
}
var r = new RegExp(exports.REGEX_SECTIONS), idx = 0, nView = Object.assign({}, view);
while ((section = r.exec(nTemplate)) !== null) {
var match = section[0], operator = section[1], mVar = section[2], inner = section[3];
if (~mVar.indexOf('.')) {
var node = exports.accessNode(mVar, view);
nTemplate = node
? nTemplate.replace(match, exports._compileBlock(section, nView, node))
: nTemplate.replace(match, '');
}
else if ((operator === '#' && view[mVar]) ||
(operator === '^' && !view[mVar])) {
if (~inner.indexOf('{{#' + mVar + '}}')) {
// Handles cases where we have nested nodes with the same name
r.lastIndex = idx + 1;
nView = Object.assign(nView, view[mVar]);
}
else {
idx = r.lastIndex;
nTemplate = nTemplate.replace(match, exports._compileBlock(section, nView));
r = new RegExp(exports.REGEX_SECTIONS); // Reset RegExp
}
}
else {
nTemplate = nTemplate.replace(match, '');
}
}
return nTemplate;
};
exports.accessNode = function (mVar, view) {
var nodes = mVar.split('.');
var vLevel = '';
vLevel = view[nodes[0]];
if (vLevel === undefined) {
return '';
}
for (var i = 1; i < nodes.length; i++) {
vLevel = vLevel[nodes[i]];
if (typeof vLevel !== 'object') {
break;
}
}
return vLevel;
};
exports._compileTags = function (line, view) {
var tags = line.match(exports.REGEX_TAGS);
if (!tags) {
return line;
}
tags.forEach(function (match) {
var _a;
var tag = match.replace(exports.REGEX_VARS, '');
var data, filter = '';
if (~tag.indexOf('|')) {
;
_a = tag.split('|'), tag = _a[0], filter = _a[1];
}
if (filter) {
if (~tag.indexOf('.')) {
var node = exports.accessNode(tag, view);
data = node ? exports.filterVar(node, filter) : '';
}
else {
data = view[tag] ? exports.filterVar(view[tag], filter) : '';
}
}
else {
if (~tag.indexOf('.')) {
var node = exports.accessNode(tag, view);
data = node ? node : '';
}
else {
if (match.startsWith('{{{') && match.endsWith('}}}')) {
if (~tag.indexOf(' ')) {
var _b = tag.split(' '), fTag = _b[0], args = _b.slice(1);
data =
typeof view[fTag] === 'function'
? view[fTag].apply(view, args) : view[tag]
? view[tag]
: '';
}
else {
data =
typeof view[tag] === 'function'
? view[tag]()
: view[tag]
? view[tag]
: '';
}
}
else {
if (~tag.indexOf(' ')) {
var _c = tag.split(' '), fTag = _c[0], args = _c.slice(1);
data =
typeof view[fTag] === 'function'
? exports.decodeHTML(view[fTag].apply(view, args))
: view[tag]
? exports.decodeHTML(view[tag])
: '';
}
else {
data =
typeof view[tag] === 'function'
? exports.decodeHTML(view[tag]())
: view[tag]
? exports.decodeHTML(view[tag])
: '';
}
}
}
}
line = line.replace(match, data);
});
return line;
};
exports.decodeHTML = function (html) {
return html.toString().replace(exports.REGEX_HTML_CHARS, function (m) { return exports.HTML_CHAR_MAP[m]; });
};
exports.defaultFilterMap = {
lower: function (res) { return res.toLowerCase(); },
upper: function (res) { return res.toUpperCase(); },
linkify: function (res) {
return res.replace(exports.REGEX_LINK, function (m) { return "<a href=\"" + m + "\" title=\"" + m + "\">" + m + "</a>"; });
},
ucwords: function (res) {
return ~res.indexOf(' ')
? res
.split(' ')
.map(function (word) {
return word.charAt(0).toUpperCase() + word.slice(1);
})
.join(' ')
: res.charAt(0).toUpperCase() + res.slice(1);
},
excerpt: function (res) {
return res.length <= 255
? res
: res.slice(0, res.substring(0, 255).lastIndexOf(' ')) + '...';
},
stripTags: function (res) { return res.replace(exports.REGEX_HTML_TAGS, ''); }
};
var filterMap = Object.assign({}, exports.defaultFilterMap);
exports.filterVar = function (str, filter) {
var result = filterMap[filter] ? filterMap[filter](str) : str;
return ~exports.IGNORE_HTML_FILTERS.indexOf(filter)
? result
: exports.decodeHTML(result) || result;
};
exports.Stencil = {
render: function (template, view, subTemplates, options) {
if (options) {
if (options.filters) {
filterMap = Object.assign(filterMap, options.filters);
}
if (options.newLineToBr) {
return exports.render(template, view, subTemplates).replace(/\n/g, '<br />\n');
}
}
return exports.render(template, view, subTemplates);
}
};
module.exports = exports.Stencil;