WIP - add extractor, generate snippet_data

node_modules/remark-parse/lib/util/remove-indentation.js

@@ -0,0 +1,77 @@
+'use strict'
+
+var trim = require('trim')
+var repeat = require('repeat-string')
+var getIndent = require('./get-indentation')
+
+module.exports = indentation
+
+var tab = '\t'
+var lineFeed = '\n'
+var space = ' '
+var exclamationMark = '!'
+
+// Remove the minimum indent from every line in `value`.  Supports both tab,
+// spaced, and mixed indentation (as well as possible).
+function indentation(value, maximum) {
+  var values = value.split(lineFeed)
+  var position = values.length + 1
+  var minIndent = Infinity
+  var matrix = []
+  var index
+  var indentation
+  var stops
+  var padding
+
+  values.unshift(repeat(space, maximum) + exclamationMark)
+
+  while (position--) {
+    indentation = getIndent(values[position])
+
+    matrix[position] = indentation.stops
+
+    if (trim(values[position]).length === 0) {
+      continue
+    }
+
+    if (indentation.indent) {
+      if (indentation.indent > 0 && indentation.indent < minIndent) {
+        minIndent = indentation.indent
+      }
+    } else {
+      minIndent = Infinity
+
+      break
+    }
+  }
+
+  if (minIndent !== Infinity) {
+    position = values.length
+
+    while (position--) {
+      stops = matrix[position]
+      index = minIndent
+
+      while (index && !(index in stops)) {
+        index--
+      }
+
+      if (
+        trim(values[position]).length !== 0 &&
+        minIndent &&
+        index !== minIndent
+      ) {
+        padding = tab
+      } else {
+        padding = ''
+      }
+
+      values[position] =
+        padding + values[position].slice(index in stops ? stops[index] + 1 : 0)
+    }
+  }
+
+  values.shift()
+
+  return values.join(lineFeed)
+}