epiphany/node_modules/section-matter/index.js
2023-12-09 22:19:03 -08:00

136 lines
3 KiB
JavaScript

'use strict';
var typeOf = require('kind-of');
var extend = require('extend-shallow');
/**
* Parse sections in `input` with the given `options`.
*
* ```js
* var sections = require('{%= name %}');
* var result = sections(input, options);
* // { content: 'Content before sections', sections: [] }
* ```
* @param {String|Buffer|Object} `input` If input is an object, it's `content` property must be a string or buffer.
* @param {Object} options
* @return {Object} Returns an object with a `content` string and an array of `sections` objects.
* @api public
*/
module.exports = function(input, options) {
if (typeof options === 'function') {
options = { parse: options };
}
var file = toObject(input);
var defaults = {section_delimiter: '---', parse: identity};
var opts = extend({}, defaults, options);
var delim = opts.section_delimiter;
var lines = file.content.split(/\r?\n/);
var sections = null;
var section = createSection();
var content = [];
var stack = [];
function initSections(val) {
file.content = val;
sections = [];
content = [];
}
function closeSection(val) {
if (stack.length) {
section.key = getKey(stack[0], delim);
section.content = val;
opts.parse(section, sections);
sections.push(section);
section = createSection();
content = [];
stack = [];
}
}
for (var i = 0; i < lines.length; i++) {
var line = lines[i];
var len = stack.length;
var ln = line.trim();
if (isDelimiter(ln, delim)) {
if (ln.length === 3 && i !== 0) {
if (len === 0 || len === 2) {
content.push(line);
continue;
}
stack.push(ln);
section.data = content.join('\n');
content = [];
continue;
}
if (sections === null) {
initSections(content.join('\n'));
}
if (len === 2) {
closeSection(content.join('\n'));
}
stack.push(ln);
continue;
}
content.push(line);
}
if (sections === null) {
initSections(content.join('\n'));
} else {
closeSection(content.join('\n'));
}
file.sections = sections;
return file;
};
function isDelimiter(line, delim) {
if (line.slice(0, delim.length) !== delim) {
return false;
}
if (line.charAt(delim.length + 1) === delim.slice(-1)) {
return false;
}
return true;
}
function toObject(input) {
if (typeOf(input) !== 'object') {
input = { content: input };
}
if (typeof input.content !== 'string' && !isBuffer(input.content)) {
throw new TypeError('expected a buffer or string');
}
input.content = input.content.toString();
input.sections = [];
return input;
}
function getKey(val, delim) {
return val ? val.slice(delim.length).trim() : '';
}
function createSection() {
return { key: '', data: '', content: '' };
}
function identity(val) {
return val;
}
function isBuffer(val) {
if (val && val.constructor && typeof val.constructor.isBuffer === 'function') {
return val.constructor.isBuffer(val);
}
return false;
}