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lib: Add a function to filter sources by regular expressions.

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This commit is contained in:
Tom Hunger 2017-02-17 18:56:39 +00:00
parent 624cd8ae9e
commit cb96ed615e
1 changed files with 6 additions and 0 deletions
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6
lib/sources.nix
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@ -26,6 +26,12 @@ rec {
cleanSource = builtins.filterSource cleanSourceFilter;
# Filter sources by a list of regular expressions.
#
# E.g. `src = sourceByRegex ./my-subproject [".*\.py$" "^database.sql$"]`
sourceByRegex = src: regexes: builtins.filterSource (path: type:
let relPath = lib.removePrefix (toString src + "/") (toString path);
in lib.any (re: builtins.match re relPath != null) regexes) src;
# Get all files ending with the specified suffices from the given
# directory or its descendants. E.g. `sourceFilesBySuffices ./dir