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#!/usr/bin/env sh
#
# SPDX-License-Identifier: GPL-2.0-only
# DESCR: Check for non-ASCII and unprintable characters
LC_ALL=C export LC_ALL
INCLUDED_FILES='\.[chsS]$\|\.asl$\|\.cb$\|\.inc$\|Kconfig\|\.ld$|\.txt\|\.hex'
EXCLUDED_DIRS='^payloads/external/\|^src/vendorcode/\|^Documentation/'
EXCLUDED_FILES='to-wiki/towiki\.sh$\|vga/vga_font\|video/font\|PDCurses.*x11'
EXCLUDED_PHRASES='Copyright\|Ported to\|Intel®\|°C\|°F\|Athlon™\|Copyright.*©'
# Exit if git isn't present or the code isn't in a git repo
if [ -z "$(command -v git)" ] || \
[ "$(git rev-parse --is-inside-work-tree 2>/dev/null)" != "true" ]
then
exit
fi
# 1. Get the list of files to parse and send them through grep
# 2. Find any characters that aren't TAB, or space (0x20) to ~ (0x7F)
# LF (0x10) isn't included, as it ends the grep line
# 3. Remove common phrases and names that have been found
# 4. Run the result through grep again to highlight the issues that were
# found. Without this step, the characters can be difficult to see.
# shellcheck disable=SC2046
git grep -lP "[^\t-~]" | \
grep "$INCLUDED_FILES" | \
grep -v "$EXCLUDED_DIRS" | \
grep -v "$EXCLUDED_FILES" | \
xargs -I % \
grep -n "[^ -~]" % | \
grep -iv "$EXCLUDED_PHRASES" | \
grep --color='auto' "[^ -~]"
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