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Barebones mustache-like templating written in pure Bash. That means no sed or awk.
functions like _eval_tags
and _parse
are begging to be rewritten. Their far too big, and difficult to follow.
Instead of trying to predict everyone's use-cases I'll instead open up crunchwrap and allow variables to be piped to common utilities.
This introduces it's own set of problems though. This would allow the running of arbitrary code. We can take some steps to lockdown filters, but it's not a catchall. There will always be ways to circumvent any sense of security given the user is entering input.
Someone could easily wreck havoc with a oneliner like:
{{ variable | true && rm -rf $HOME }}
Here's some steps we can do to safen filters, but again it's not a catchall.
whitelist specific commands such as:
kill filter/command if it runs for more than X
seconds
As I start to build out this feature I'm sure I'll find more ways to improve the concept.
Variable:
example_var="The quick brown fox"
Template:
{{ example_var | awk '{$2="slow"; print $0} }} jumps over the lazy dog
Output:
The slow brown fox jumps over the lazy dog
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