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#!/bin/bash
# Copyright 2014-2024 Ulrich Müller
# Distributed under the terms of the GNU GPL version 2 or later
# Author: Ulrich Müller <ulm@gentoo.org>
shopt -s extglob
portdir=$(portageq get_repo_path / gentoo)
cd "${portdir}" || exit 1
count=0
while read line; do
path=${line%:*}
type=${line##*:*( )}
case ${type} in
"application/octet-stream; charset=binary" \
| "application/octet-stream; charset=unknown" \
| "binary; charset=binary")
# GNU Info files (or patches to them) can contain the following
# control characters that produce false positives:
# - 0x1f, followed by LF or FF
# - 0x7f (DEL), preceded by "Node:" or "Ref:" in the same line
# Filter such characters and reiterate
line=$(sed -e 's/\x1f\f\?$//;/\(Node\|Ref\):/s/\x7f//' "${path}" \
| file -i -)
type=${line##*:*( )}
;;
esac
case ${type} in
text/*) ;; # text file
application/*"; charset=us-ascii") ;;
application/*"; charset=utf-8") ;;
"image/svg; charset=us-ascii") ;; # SVG image
"image/svg+xml; charset=us-ascii") ;; # SVG image
"image/x-xpmi; charset=us-ascii") ;; # XPM image
"image/x-xpixmap; charset=us-ascii") ;; # XPM image
"message/rfc822; charset=us-ascii") ;;
"message/rfc822; charset=utf-8") ;;
*)
size=$(stat -c "%s" "${path}")
echo "${path#./}: ${type} (size=${size})"
(( count++ ))
;;
esac
done < <(find \( -path ./distfiles -o -path ./local -o -path ./metadata \
-o -path ./packages \) -prune -o ! -type d ! -name 'Manifest*.gz' \
-exec file -ih '{}' + | sort)
[[ ${count} -gt 0 ]] || echo "No binary files found. :-)"
# Output the file version for debugging of false positives/negatives
echo; file --version | head -n1
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