MOLD: Meta-variable Operations for Lean Development
Mold is a Template Processor, or Template Engine, to work with repository templates. The main motivation of Mold is to have repositories in GitHub used as template repositories to create new, customized repositories for other users.
Mold is the CLI wrapper of the mold_lib, the Ada library that implements all Mold functionality.
Main features supported in Mold include
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variable replacement in mold files (*.mold)
-
definition of variables with a simple TOML file
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for a given directory, variable replacement recursively for all mold files in all subdirectories
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variable replacement in filenames
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variables in variables
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predefined text filters (and custom text filters)
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inclusion of other templates
Variable replacement can be specified as normal, optional or mandatory.
For example, the variable foo = "bar" can be specified with {{foo}},
{{?foo}} (optional) or {{#foo}} (mandatory). The difference is the handling
of errors when an undefined variable is encountered.
All mold files must end with the extension .mold, for example
README.md.mold. Destination files (with variables replaced) have the same
name without the mold extension: README.md. This simplifies the work done in
large subdirectories with few templates.
This crate contains the Ada library and unit tests. For a CLI tool, please
take a look at the crate mold.
Please visit Mold documentation for more information.
MIT (c) 2023-2025 Francesc Rocher