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Contents
require "pathname"
require "autoproj/exceptions"
require "autobuild/environment"
module Autoproj
module Ops
# Find the given executable file in PATH
#
# If `cmd` is an absolute path, it will either return it or raise if
# `cmd` is not executable. Otherwise, looks for an executable named
# `cmd` in PATH and returns it, or raises if it cannot be found. The
# exception contains a more detailed reason for failure
#
#
# @param [String] cmd
# @return [String] the resolved program
# @raise [ExecutableNotFound] if an executable file named `cmd` cannot
# be found
def self.which(cmd, path_entries: nil)
path = Pathname.new(cmd)
if path.absolute?
if path.file? && path.executable?
cmd
elsif path.exist?
raise ExecutableNotFound.new(cmd),
"given command `#{cmd}` exists but is not an executable file"
else
raise ExecutableNotFound.new(cmd),
"given command `#{cmd}` does not exist, "\
"an executable file was expected"
end
else
path_entries = path_entries.call if path_entries.respond_to?(:call)
absolute = Autobuild::Environment.find_executable_in_path(cmd, path_entries)
if absolute
absolute
elsif (file = Autobuild::Environment.find_in_path(cmd, path_entries))
raise ExecutableNotFound.new(cmd),
"`#{cmd}` resolves to #{file} which is not executable"
else
raise ExecutableNotFound.new(cmd),
"cannot resolve `#{cmd}` to an executable in the workspace"
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems