Count Lines of a Text File

Apart from reading text from documents, many tasks require users to inspect various characteristics of the retrieved data. Therefore, Robomotion provides properties that describe each variable's content, such as the number of lines a text file has.

What Count Lines of a Text File can do

• Build default path (Core.Programming.Function) — sets msg.fixture_path to the bundled sample.txt under $Home$/templates/.../fixtures.
• Intro Dialog (Core.Dialog.MessageBox, info) titled Description explaining that the flow prompts for a text file and reports its line count.
• Input Dialog (Core.Dialog.InputBox) titled Please select a text file..., default msg.fixture_path → msg.selected_text_file.
• Branch (Core.Programming.Function, outputs: 2) — continue when the path is non-empty and ends in .txt; otherwise skip straight to the completion dialog.
• Read file (Core.FileSystem.ReadFile, optBase64: false) from msg.selected_text_file → msg.file_contents.
• Count lines (Core.Programming.Function) — splits msg.file_contents on \n, drops a trailing empty element, stores msg.line_count and builds msg.dialog_text = The file has N lines!.
• Results Dialog (Core.Dialog.MessageBox, info) titled Results... showing msg.dialog_text, then a final Example completed! dialog before Core.Flow.Stop.

Behind the scenes

• Core.FileSystem.ReadFile returns the whole file as a string, so the Function node does the line splitting itself and trims a trailing blank line so files that end with a newline don't over-count.
• The completion dialog runs on both branches (valid read and skipped selection) so the user always gets a clear end-of-flow acknowledgement.