Method parseDiffHeader

app/src/lib/diff-parser.ts:174–190

* Parse the diff header, meaning everything from the * start of the diff output to the end of the line beginning * with +++ * * Example diff header: * * diff --git a/app/src/lib/diff-parser.ts b/app/src/lib/diff-parser.ts * index e1d4871..3bd3ee0 100644 * --- a/app/src/

()

   * found (which is a valid state).
   */
  private parseDiffHeader(): IDiffHeaderInfo | null {
    // TODO: There's information in here that we might want to
    // capture, such as mode changes
    while (this.nextLine()) {
      if (this.lineStartsWith('Binary files ') && this.lineEndsWith('differ')) {
        return { isBinary: true }
      }

      if (this.lineStartsWith('+++')) {
        return { isBinary: false }
      }
    }

    // It's not an error to not find the +++ line, see the
    // 'parses diff of empty file' test in diff-parser-tests.ts
    return null
  }

  /**
   * Attempts to convert a RegExp capture group into a number.