UML Sequence Diagrams Generator - Commandline tool to generate diagrams as images in various formats (SVG, PNG, JPG, PDF, etc.) from source text files.
This is a pure-Python rewrite of the https://github.com/pbauermeister/umlsequence project, which was itself based on umlgraph by Diomidis Spinellis.
Source text files are in the so-called "umlsequence" syntax.
Umlsequence syntax example:
# objects definitions E : # External Messages T : t:thread O : :Toolkit P : # messages and activations E -> T+ a1:run(3) T -> O+ run() O >callbackLoop() # creation O+ :> P p:Peer # message with response O- => P result=handleExpose() # destruction O #> P # deactivation T- O- 
See https://github.com/pbauermeister/umlsequence2/tree/master/doc/README.md.
See https://github.com/pbauermeister/umlsequence2/tree/master/examples/README.md.
- Python3
- Python libraries: svgwrite, reportlab
[sudo] pip3 install umlsequence2 umlsequence2 -h says:
usage: umlsequence2 [-h] [--output-file OUTPUT_FILE] [--markdown] [--format FORMAT] [--percent-zoom PERCENT_ZOOM] [--background-color BACKGROUND_COLOR] [--debug] [INPUT_FILE] UML sequence command-line utility, version 2. (C) Copyright 2021 by Pascal Bauermeister. Converts a textual UML sequence description into a graphic file. See https://github.com/pbauermeister/umlsequence2/tree/master/examples for examples. positional arguments: INPUT_FILE UML sequence input file; if omitted, stdin is used optional arguments: -h, --help show this help message and exit --output-file OUTPUT_FILE, -o OUTPUT_FILE output file name; pass '-' to use stdout; if omitted, use INPUT_FILE base name with '.svg' extension, or stdout --markdown, -m consider snippets between opening marker: ```umlsequence OUTFILE, and closing marker: ``` --format FORMAT, -f FORMAT output format: any supported by ImageMagick; default is ps --percent-zoom PERCENT_ZOOM, -p PERCENT_ZOOM magnification percentage; default is 100 --background-color BACKGROUND_COLOR, -b BACKGROUND_COLOR background color name (including 'none' for transparent) in web color notation; see https://developer.mozilla.org/en- US/docs/Web/CSS/color_value for a list of valid names; default is white --debug emits debug messages