#!/bin/sh
# Copyright (c) 2024 DTB <trinity@trinity.moe>
# Copyright (c) 2024 Emma Tebibyte <emma@tebibyte.media>
# SPDX-License-Identifier: FSFAP
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice and this
# notice are preserved.  This file is offered as-is, without any warranty.

.PRAGMA: command_comment

.PHONY: npc_tests
npc_tests: npc_help npc_args npc_ascii

.PHONY: npc_help
npc_help: $(BIN)/npc
	! $(BIN)/npc -h

.PHONY: npc_args
# arg parsing
npc_args:
	$(BIN)/npc -e </dev/null
	$(BIN)/npc -t </dev/null
	$(BIN)/npc -et </dev/null
	! $(BIN)/npc -et 5 </dev/null

.PHONY: npc_ascii
# Test 0x00 to 0x7f in input; in other words, the full 7b ASCII range.
npc_ascii: npc_ascii_controls npc_ascii_symbols npc_ascii_uppers # \
#	npc_ascii_lowers

.PHONY: npc_ascii_controls
# (control characters)
npc_ascii_controls:
	# ASCII 0x00 to 0x0a (before the newline, due to xargs(1p) issues)
	awk 'BEGIN{ for (i = 0; i < 32; ++i) printf("%c", i); }' \
		| $(BIN)/npc \
		| head -n 1 \
		| xargs -I out test "^@^A^B^C^D^E^F^G^H" = out

	# ASCII 0x0a (otherwise the head|tail sequence won't work) to 0x1f
	awk 'BEGIN{ for (i = 0; i < 32; ++i) printf("%c", i); print }' \
		| $(BIN)/npc \
		| head -n 2 \
		| tail -n 1 \
		| xargs -I out test "^K^L^M^N^O^P^Q^R^S^T^U^V^W^X^Y^Z^[^\^]^^^_"

.PHONY: npc_ascii_symbols
# ASCII 0x1f to 0x3f (^_ and symbols)
npc_ascii_symbols:
	# shell quoting olympics
	awk 'BEGIN{ for (i = 31; i < 64; ++i) printf("%c", i); print }' \
		| $(BIN)/npc \
		| sed -e s"/\'/\\\'/g" -e 's/"/\\"/g' \
		| xargs -I out test "^_ !\"#$$%&'()*+,-./0123456789:;<=>?" = out

.PHONY: npc_ascii_uppers
# ASCII 0x40 to 0x5f (uppercases)
npc_ascii_uppers:
	awk 'BEGIN{ for (i = 64; i < 96; ++i) printf("%c", i); print }' \
		| $(BIN)/npc \
		| sed 's/\\/\\\\/' \
		| xargs -I out test @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_ = out

# This test is broken and will need closer inspection along with the npc(1)
# source.
# .PHONY: npc_ascii_lowers
# # ASCII 0x60 to 0x7f (lowercases)
# npc_ascii_lowers:
# 	awk 'BEGIN{ for (i = 96; i < 128; ++i) printf("%c", i); print }' \
# 		| $(BIN)/npc \
# 		| xargs -I out test "\`abcdefghijklmnopqrstuvwxyz{|}~^?" = out