Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.

Scripts/node_modules/js-yaml/lib/snippet.js

@@ -0,0 +1,101 @@
+'use strict';
+
+
+var common = require('./common');
+
+
+// get snippet for a single line, respecting maxLength
+function getLine(buffer, lineStart, lineEnd, position, maxLineLength) {
+  var head = '';
+  var tail = '';
+  var maxHalfLength = Math.floor(maxLineLength / 2) - 1;
+
+  if (position - lineStart > maxHalfLength) {
+    head = ' ... ';
+    lineStart = position - maxHalfLength + head.length;
+  }
+
+  if (lineEnd - position > maxHalfLength) {
+    tail = ' ...';
+    lineEnd = position + maxHalfLength - tail.length;
+  }
+
+  return {
+    str: head + buffer.slice(lineStart, lineEnd).replace(/\t/g, '→') + tail,
+    pos: position - lineStart + head.length // relative position
+  };
+}
+
+
+function padStart(string, max) {
+  return common.repeat(' ', max - string.length) + string;
+}
+
+
+function makeSnippet(mark, options) {
+  options = Object.create(options || null);
+
+  if (!mark.buffer) return null;
+
+  if (!options.maxLength) options.maxLength = 79;
+  if (typeof options.indent      !== 'number') options.indent      = 1;
+  if (typeof options.linesBefore !== 'number') options.linesBefore = 3;
+  if (typeof options.linesAfter  !== 'number') options.linesAfter  = 2;
+
+  var re = /\r?\n|\r|\0/g;
+  var lineStarts = [ 0 ];
+  var lineEnds = [];
+  var match;
+  var foundLineNo = -1;
+
+  while ((match = re.exec(mark.buffer))) {
+    lineEnds.push(match.index);
+    lineStarts.push(match.index + match[0].length);
+
+    if (mark.position <= match.index && foundLineNo < 0) {
+      foundLineNo = lineStarts.length - 2;
+    }
+  }
+
+  if (foundLineNo < 0) foundLineNo = lineStarts.length - 1;
+
+  var result = '', i, line;
+  var lineNoLength = Math.min(mark.line + options.linesAfter, lineEnds.length).toString().length;
+  var maxLineLength = options.maxLength - (options.indent + lineNoLength + 3);
+
+  for (i = 1; i <= options.linesBefore; i++) {
+    if (foundLineNo - i < 0) break;
+    line = getLine(
+      mark.buffer,
+      lineStarts[foundLineNo - i],
+      lineEnds[foundLineNo - i],
+      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo - i]),
+      maxLineLength
+    );
+    result = common.repeat(' ', options.indent) + padStart((mark.line - i + 1).toString(), lineNoLength) +
+      ' | ' + line.str + '\n' + result;
+  }
+
+  line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength);
+  result += common.repeat(' ', options.indent) + padStart((mark.line + 1).toString(), lineNoLength) +
+    ' | ' + line.str + '\n';
+  result += common.repeat('-', options.indent + lineNoLength + 3 + line.pos) + '^' + '\n';
+
+  for (i = 1; i <= options.linesAfter; i++) {
+    if (foundLineNo + i >= lineEnds.length) break;
+    line = getLine(
+      mark.buffer,
+      lineStarts[foundLineNo + i],
+      lineEnds[foundLineNo + i],
+      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]),
+      maxLineLength
+    );
+    result += common.repeat(' ', options.indent) + padStart((mark.line + i + 1).toString(), lineNoLength) +
+      ' | ' + line.str + '\n';
+  }
+
+  return result.replace(/\n$/, '');
+}
+
+
+module.exports = makeSnippet;