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https://github.com/RGBCube/nu_scripts
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This is a modified version of [capture-foreign-env command from nushell wiki](https://www.nushell.sh/cookbook/foreign_shell_scripts.html#detailed-explanation-of-capture-foreign-env). Unlike the wiki version It relies on `null_byte` instead of `newline` as a delimiter for environment variables dumped by the `env` command which allows it to support multi-line foreign environment variables.
28 lines
1 KiB
Text
28 lines
1 KiB
Text
# Returns a record of changed env variables after running a non-nushell script's contents (passed via stdin), e.g. a bash script you want to "source"
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export def main [
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--shell (-s): string = /bin/sh
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# The shell to run the script in
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# (has to support '-c' argument and POSIX 'env', 'echo', 'eval' commands)
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--arguments (-a): list<string> = []
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# Additional command line arguments to pass to the foreign shell
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] {
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let script_contents = $in;
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let env_out = with-env { SCRIPT_TO_SOURCE: $script_contents } {
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^$shell ...$arguments -c `
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env -0
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echo -n '<ENV_CAPTURE_EVAL_FENCE>'
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eval "$SCRIPT_TO_SOURCE"
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echo -n '<ENV_CAPTURE_EVAL_FENCE>'
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env -0 -u _ -u _AST_FEATURES -u SHLVL`
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}
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| split row '<ENV_CAPTURE_EVAL_FENCE>'
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| {
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before: ($in | first | str trim --char (char nul) | split row (char nul))
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after: ($in | last | str trim --char (char nul) | split row (char nul))
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}
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$env_out.after
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| where { |line| $line not-in $env_out.before }
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| parse "{key}={value}"
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| transpose --header-row --as-record
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}
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