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80 lines
1.5 KiB
JavaScript
80 lines
1.5 KiB
JavaScript
'use strict'
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var streak = require('longest-streak')
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var repeat = require('repeat-string')
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var pad = require('../util/pad')
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module.exports = code
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var lineFeed = '\n'
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var space = ' '
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// Stringify code.
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// Creates indented code when:
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//
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// - No language tag exists
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// - Not in `fences: true` mode
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// - A non-empty value exists
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//
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// Otherwise, GFM fenced code is created:
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//
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// ````markdown
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// ```js
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// foo();
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// ```
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// ````
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//
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// When in ``fence: `~` `` mode, uses tildes as fences:
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//
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// ```markdown
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// ~~~js
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// foo();
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// ~~~
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// ```
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//
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// Knows about internal fences:
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//
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// `````markdown
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// ````markdown
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// ```javascript
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// foo();
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// ```
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// ````
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// `````
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function code(node, parent) {
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var self = this
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var value = node.value
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var options = self.options
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var marker = options.fence
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var info = node.lang || ''
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var fence
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if (info && node.meta) {
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info += space + node.meta
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}
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info = self.encode(self.escape(info, node))
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// Without (needed) fences.
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if (!info && !options.fences && value) {
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// Throw when pedantic, in a list item which isn’t compiled using a tab.
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if (
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parent &&
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parent.type === 'listItem' &&
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options.listItemIndent !== 'tab' &&
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options.pedantic
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) {
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self.file.fail(
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'Cannot indent code properly. See https://git.io/fxKR8',
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node.position
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)
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}
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return pad(value, 1)
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}
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fence = repeat(marker, Math.max(streak(value, marker) + 1, 3))
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return fence + info + lineFeed + value + lineFeed + fence
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}
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