readPathsFromFile
lib.strings.readPathsFromFile
Docs pulled from | This Revision | about 1 hour ago
Read a list of paths from file
, relative to the rootPath
.
Lines beginning with #
are treated as comments and ignored.
Whitespace is significant.
This function is deprecated and should be avoided.
This function is not performant and should be avoided.
Inputs
rootPath
- 1. Function argument
file
- 2. Function argument
Type
readPathsFromFile :: string -> string -> [string]
Examples
lib.strings.readPathsFromFile
usage example
readPathsFromFile /prefix
./pkgs/development/libraries/qt-5/5.4/qtbase/series
=> [ "/prefix/dlopen-resolv.patch" "/prefix/tzdir.patch"
"/prefix/dlopen-libXcursor.patch" "/prefix/dlopen-openssl.patch"
"/prefix/dlopen-dbus.patch" "/prefix/xdg-config-dirs.patch"
"/prefix/nix-profiles-library-paths.patch"
"/prefix/compose-search-path.patch" ]
Noogle detected
Implementation
The following is the current implementation of this function.
readPathsFromFile = lib.warn "lib.readPathsFromFile is deprecated, use a list instead."
(rootPath: file:
let
lines = lib.splitString "\n" (readFile file);
removeComments = lib.filter (line: line != "" && !(lib.hasPrefix "#" line));
relativePaths = removeComments lines;
absolutePaths = map (path: rootPath + "/${path}") relativePaths;
in
absolutePaths);