node-source-scan

Extract a part of a file based on start and end line numbers.

Usage

var scanFile = require('source-scan').scanFile;
var options = {
  filePath: "file.js",
  startLine: 100,
  endLine: 200,
};
scanFile(options, function(err, sourceBuffer) {
  if (err) throw err;
  // sourceBuffer is a Buffer object with the source code from lines 100-200.
});

Documentation

scanFile(options, callback)

options:

• filePath: String or buffer that represents the file system path to open.
• startLine: 0-based line index to start capturing from. 0 is the first line in the file.
• endLine: 0-based line index to stop capturing. startLine of 0 and endLine: of 10 means to capture the first 10 lines. If endLine is beyond the end of the file, it is clamped to include the last line.
• maxByteCount: optional. Sets a limit on the maximum number of bytes that will be obtained from the file. Defaults to 120 bytes times endLine - startLine.

callback(err, sourceBuffer)