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#
# Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
space :=
space := $(space) $(space)
comma := ,
null :=
compat-path = $(subst $(space),$(null),$(1))
decompat-path = $(subst $(null), ,$(1))
absolute-path = $(call decompat-path,$(abspath $(call compat-path,$(1))))
real-path = $(call decompat-path,$(realpath $(call compat-path,$(1))))
file-name = $(call decompat-path,$(notdir $(call compat-path,$(1))))
directory-name = $(call decompat-path,$(dir $(call compat-path,$(1))))
escape-shell = '$(subst ','\'',$(1))'
#
# Upper-case a string value.
#
# Parameters:
#
# - $(1): The string to upper-case.
#
# Example usage:
#
# $(call uppercase,HeLlO wOrLd) # "HELLO WORLD"
#
uppercase = $(shell echo $(call escape-shell,$(1)) | tr '[:lower:]' '[:upper:]')
#
# Lower-case a string value.
#
# Parameters:
#
# - $(1): The string to lower-case.
#
# Example usage:
#
# $(call lowercase,HeLlO wOrLd) # "hello world"
#
lowercase = $(shell echo $(call escape-shell,$(1)) | tr '[:upper:]' '[:lower:]')
#
# Determine the "truthiness" of a value.
#
# Parameters:
#
# - $(1): The value to determine the truthiness of.
#
# A value is considered to be falsy if it is:
#
# - empty, or
# - equal to "0", "N", "NO", "F" or "FALSE" after upper-casing.
#
# If the value is truthy then the value is returned as-is, otherwise no value
# is returned.
#
# Example usage:
#
# truthy := y
# truthy-bool := $(call bool,$(truthy)) # "y"
#
# falsy := n
# falsy-bool := $(call bool,$(falsy)) # <empty>
#
bool = $(filter-out 0 n no f false,$(call lowercase,$(1)))
#
# Determine the "truthiness" of a value, returning 0 or 1.
#
# Parameters:
#
# - $(1): The value to determine the truthiness of.
#
# A value is considered to be falsy if it is:
#
# - empty, or
# - equal to "0", "N", "NO", "F" or "FALSE" after upper-casing.
#
# If the value is truthy then the value is returned as-is, otherwise no value
# is returned.
#
# Example usage:
#
# truthy := y
# truthy-bool := $(call bool,$(truthy)) # "1"
#
# falsy := n
# falsy-bool := $(call bool,$(falsy)) # "0"
#
bool-01 = $(if $(call bool,$(1)),1,0)