variable-resolver

The aim of this package is to easily replace variables inside a given template.

The package contains a library and a cli application (repvar).

Format of the template

The package is capable of finding variable names inside double curly braces.

Example template:

Hello, {{name}}

Escaping double curly braces happens by using triple curly braces. Examples:

• The following template: Hello, {{{name}}} will resolve to Hello, {{name}}
• The following template: Hello, {{{{name}}}} will resolve to Hello, {{{name}}}
• The following template: Hello, {{{{{name}}}}} will resolve to Hello, {{Jane}}
• The following template: Hello, {{{{{{name}}}}}} will resolve to Hello, {{{{name}}}}

Using repvar cli utility

The following example demonstrates how every occurence of a variable is replaced with a value. In the following case every {{name}} is replaced with Jane:

echo "Hello, {{name}}" | repvar -v name=Jane

Templates inside files can be handled by piping the file into repvar. Example:

cat greeting.txt | repvar -v name=Jane

Be aware that writing to the same file as the source is not safe. Example:

cat greeting.txt | repvar -v name=Jane > greeting.txt

Todos

• docstring
• case-insensitive variable resolver mode
• load variables from environment variables
• load variables from .env files
• load template from file