angular-cn/aio/tools/transforms/angular-base-package/rendering/indentForMarkdown.js

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module.exports = function() {
// var MIXIN_PATTERN = /\S*\+\S*\(.*/;
return {
name: 'indentForMarkdown',
process: function(str, width) {
if (str == null || str.length === 0) {
return '';
}
width = width || 4;
var lines = str.split('\n');
var newLines = [];
var sp = spaces(width);
var spMixin = spaces(width - 2);
var isAfterMarkdownTag = true;
lines.forEach(function(line) {
// indent lines that match mixin pattern by 2 less than specified width
if (line.indexOf('{@example') >= 0) {
if (isAfterMarkdownTag) {
// happens if example follows example
if (newLines.length > 0) {
newLines.pop();
} else {
// wierd case - first expression in str is an @example
// in this case the :marked appear above the str passed in,
// so we need to put 'something' into the markdown tag.
newLines.push(sp + '.'); // '.' is a dummy char
}
}
newLines.push(spMixin + line);
// after a mixin line we need to reenter markdown.
newLines.push(spMixin + ':marked');
isAfterMarkdownTag = true;
} else {
if ((!isAfterMarkdownTag) || (line.trim().length > 0)) {
newLines.push(sp + line);
isAfterMarkdownTag = false;
}
}
});
if (isAfterMarkdownTag) {
if (newLines.length > 0) {
// if last line is a markdown tag remove it.
newLines.pop();
}
}
// force character to be a newLine.
if (newLines.length > 0) newLines.push('');
var res = newLines.join('\n');
return res;
}
};
function spaces(n) {
var str = '';
for (var i = 0; i < n; i++) {
str += ' ';
}
return str;
}
};