From 59ea804b01cd711d4235e46e4cc4fdef8390d5fe Mon Sep 17 00:00:00 2001
From: Ulrich Mueller <ulm@gentoo.org>
Date: Sat, 28 Aug 2010 09:20:23 +0200
Subject: Implement controllable compression and docompress, bug #273633.

---
 bin/ebuild-helpers/dodoc        |  2 +-
 bin/ebuild-helpers/ecompressdir |  5 ++-
 bin/ebuild-helpers/prepalldocs  |  5 +++
 bin/ebuild-helpers/prepallman   |  3 ++
 bin/ebuild-helpers/prepinfo     |  1 +
 bin/ebuild-helpers/prepman      |  3 ++
 bin/ebuild.sh                   | 28 ++++++++++++
 bin/isolated-functions.sh       |  2 +-
 bin/misc-functions.sh           | 97 +++++++++++++++++++++++++++++++++++++++++
 9 files changed, 142 insertions(+), 4 deletions(-)

diff --git a/bin/ebuild-helpers/dodoc b/bin/ebuild-helpers/dodoc
index 29b690112..99410ea85 100755
--- a/bin/ebuild-helpers/dodoc
+++ b/bin/ebuild-helpers/dodoc
@@ -18,7 +18,7 @@ ret=0
 for x in "$@" ; do
 	if [ -s "${x}" ] ; then
 		install -m0644 "${x}" "${dir}"
-		ecompress --queue "${dir}/${x##*/}"
+		hasq "${EAPI}" 0 1 2 3 && ecompress --queue "${dir}/${x##*/}"
 	elif [ ! -e "${x}" ] ; then
 		echo "!!! ${0##*/}: $x does not exist" 1>&2
 		((ret|=1))
diff --git a/bin/ebuild-helpers/ecompressdir b/bin/ebuild-helpers/ecompressdir
index 90c26f9d5..acdb1cd7f 100755
--- a/bin/ebuild-helpers/ecompressdir
+++ b/bin/ebuild-helpers/ecompressdir
@@ -13,7 +13,8 @@ case $1 in
 	--ignore)
 		shift
 		for skip in "$@" ; do
-			[[ -d ${D}${skip} ]] && touch "${D}${skip}.ecompress.skip"
+			[[ -d ${D}${skip} || -f ${D}${skip} ]] \
+				&& touch "${D}${skip}.ecompress.skip"
 		done
 		exit 0
 		;;
@@ -74,7 +75,7 @@ funk_up_dir() {
 }
 
 # _relocate_skip_dirs(srctree, dsttree)
-# Move all the directories we want to skip running compression
+# Move all files and directories we want to skip running compression
 # on from srctree to dsttree.
 _relocate_skip_dirs() {
 	local srctree="$1" dsttree="$2"
diff --git a/bin/ebuild-helpers/prepalldocs b/bin/ebuild-helpers/prepalldocs
index 6705f5e79..f7026c679 100755
--- a/bin/ebuild-helpers/prepalldocs
+++ b/bin/ebuild-helpers/prepalldocs
@@ -4,6 +4,11 @@
 
 source "${PORTAGE_BIN_PATH:-/usr/lib/portage/bin}"/isolated-functions.sh
 
+if ! hasq "${EAPI}" 0 1 2 3; then
+	eqawarn "QA Notice: Deprecated call to 'prepalldocs'"
+	exit 0
+fi
+
 if [[ -n $1 ]] ; then
 	vecho "${0##*/}: invalid usage; takes no arguments" 1>&2
 fi
diff --git a/bin/ebuild-helpers/prepallman b/bin/ebuild-helpers/prepallman
index f41bcb816..71b79a0ef 100755
--- a/bin/ebuild-helpers/prepallman
+++ b/bin/ebuild-helpers/prepallman
@@ -4,6 +4,9 @@
 
 source "${PORTAGE_BIN_PATH:-/usr/lib/portage/bin}"/isolated-functions.sh
 
+# replaced by controllable compression in EAPI 4
+hasq "${EAPI}" 0 1 2 3 || exit 0
+
 ret=0
 
 find "${D}" -type d -name man > "${T}"/prepallman.filelist
diff --git a/bin/ebuild-helpers/prepinfo b/bin/ebuild-helpers/prepinfo
index 1d8c7d1f0..cb39ab86c 100755
--- a/bin/ebuild-helpers/prepinfo
+++ b/bin/ebuild-helpers/prepinfo
@@ -27,4 +27,5 @@ find "${D}${infodir}" -type d -print0 | while read -d $'\0' x ; do
 	rm -f "${x}"/dir{,.info}{,.gz,.bz2}
 done
 
+hasq "${EAPI}" 0 1 2 3 || exit 0
 exec ecompressdir --queue "${infodir}"
diff --git a/bin/ebuild-helpers/prepman b/bin/ebuild-helpers/prepman
index cfbcdd41a..97f2fbf7e 100755
--- a/bin/ebuild-helpers/prepman
+++ b/bin/ebuild-helpers/prepman
@@ -15,6 +15,9 @@ if [[ ! -d ${mandir} ]] ; then
 	exit 0
 fi
 
+# replaced by controllable compression in EAPI 4
+hasq "${EAPI}" 0 1 2 3 || exit 0
+
 shopt -s nullglob
 
 really_is_mandir=0
diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index b2ac5b419..393c82ebd 100755
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -303,6 +303,8 @@ export EXEOPTIONS="-m0755"
 export LIBOPTIONS="-m0644"
 export DIROPTIONS="-m0755"
 export MOPREFIX=${PN}
+declare -a PORTAGE_DOCOMPRESS=( /usr/share/{doc,info,man} )
+declare -a PORTAGE_DOCOMPRESS_SKIP=( /usr/share/doc/${PF}/html )
 
 # adds ".keep" files so that dirs aren't auto-cleaned
 keepdir() {
@@ -860,6 +862,32 @@ libopts() {
 	hasq -s ${LIBOPTIONS} && die "Never call libopts() with -s"
 }
 
+docompress() {
+	hasq "${EAPI}" 0 1 2 3 && die "'docompress' not supported in this EAPI"
+
+	local f g
+	if [[ $1 = "-x" ]]; then
+		shift
+		for f; do
+			f=$(strip_duplicate_slashes "${f}"); f=${f%/}
+			[[ ${f:0:1} = / ]] || f="/${f}"
+			for g in "${PORTAGE_DOCOMPRESS_SKIP[@]}"; do
+				[[ ${f} = ${g} ]] && continue 2
+			done
+			PORTAGE_DOCOMPRESS_SKIP[${#PORTAGE_DOCOMPRESS_SKIP[@]}]=${f}
+		done
+	else
+		for f; do
+			f=$(strip_duplicate_slashes "${f}"); f=${f%/}
+			[[ ${f:0:1} = / ]] || f="/${f}"
+			for g in "${PORTAGE_DOCOMPRESS[@]}"; do
+				[[ ${f} = ${g} ]] && continue 2
+			done
+			PORTAGE_DOCOMPRESS[${#PORTAGE_DOCOMPRESS[@]}]=${f}
+		done
+	fi
+}
+
 abort_handler() {
 	local msg
 	if [ "$2" != "fail" ]; then
diff --git a/bin/isolated-functions.sh b/bin/isolated-functions.sh
index 3df18b53c..cd1039b07 100644
--- a/bin/isolated-functions.sh
+++ b/bin/isolated-functions.sh
@@ -572,7 +572,7 @@ save_ebuild_env() {
 			best_version use_with use_enable register_die_hook \
 			keepdir unpack strip_duplicate_slashes econf einstall \
 			dyn_setup dyn_unpack dyn_clean into insinto exeinto docinto \
-			insopts diropts exeopts libopts \
+			insopts diropts exeopts libopts docompress \
 			abort_handler abort_prepare abort_configure abort_compile \
 			abort_test abort_install dyn_prepare dyn_configure \
 			dyn_compile dyn_test dyn_install \
diff --git a/bin/misc-functions.sh b/bin/misc-functions.sh
index d8754cd3a..50799976c 100755
--- a/bin/misc-functions.sh
+++ b/bin/misc-functions.sh
@@ -40,6 +40,102 @@ install_symlink_html_docs() {
 	fi
 }
 
+# similar to readlink -f, but only expands symlinks up to the last
+# directory component of the path
+canonicalise_dir() {
+	local ret wd=$(pwd)
+	if [[ -d $1 ]]; then
+		cd -P "$1" 2>/dev/null && pwd -P
+		ret=$?
+	else
+		cd -P "${1%"${1##*/}"}" 2>/dev/null && echo "$(pwd -P)/${1##*/}"
+		ret=$?
+	fi
+	cd "${wd}"
+	return ${ret}
+}
+
+prepcompress() {
+	local -a include exclude incl_d incl_f
+	local f g i real_f real_d
+
+	# Canonicalise path names and check for their existence.
+	real_d=$(canonicalise_dir "${D}")
+	for (( i = 0; i < ${#PORTAGE_DOCOMPRESS[@]}; i++ )); do
+		real_f=$(canonicalise_dir "${D}${PORTAGE_DOCOMPRESS[i]}")
+		f=${real_f#"${real_d}"}
+		if [[ ${real_f} != "${f}" ]] && [[ -d ${real_f} || -f ${real_f} ]]
+		then
+			include[${#include[@]}]=${f:-/}
+		elif [[ ${i} -ge 3 ]]; then
+			ewarn "prepcompress:" \
+				"ignoring nonexistent path '${PORTAGE_DOCOMPRESS[i]}'"
+		fi
+	done
+	for (( i = 0; i < ${#PORTAGE_DOCOMPRESS_SKIP[@]}; i++ )); do
+		real_f=$(canonicalise_dir "${D}${PORTAGE_DOCOMPRESS_SKIP[i]}")
+		f=${real_f#"${real_d}"}
+		if [[ ${real_f} != "${f}" ]] && [[ -d ${real_f} || -f ${real_f} ]]
+		then
+			exclude[${#exclude[@]}]=${f:-/}
+		elif [[ ${i} -ge 1 ]]; then
+			ewarn "prepcompress:" \
+				"ignoring nonexistent path '${PORTAGE_DOCOMPRESS_SKIP[i]}'"
+		fi
+	done
+
+	# Remove redundant entries from lists.
+	# For the include list, remove any entries that are
+	# contained in a directory in the include or exclude lists.
+	for (( i = ${#include[@]} - 1; i >= 0; i-- )); do
+		f=${include[i]}
+		for g in "${include[@]}"; do
+			if [[ ${f} == "${g%/}"/* ]]; then
+				unset include[i]
+				continue 2
+			fi
+		done
+		for g in "${exclude[@]}"; do
+			if [[ ${f} = ${g} || ${f} == "${g%/}"/* ]]; then
+				unset include[i]
+				continue 2
+			fi
+		done
+	done
+	# For the exclude list, remove any entries that are:
+	# a) contained in a directory in the exclude list, or
+	# b) _not_ contained in a directory in the include list.
+	for (( i = ${#exclude[@]} - 1; i >= 0; i-- )); do
+		f=${exclude[i]}
+		for g in "${exclude[@]}"; do
+			if [[ ${f} == "${g%/}"/* ]]; then
+				unset exclude[i]
+				continue 2
+			fi
+		done
+		for g in "${include[@]}"; do
+			[[ ${f} == "${g%/}"/* ]] && continue 2
+		done
+		unset exclude[i]
+	done
+
+	# Split the include list into directories and files
+	for f in "${include[@]}"; do
+		if [[ -d ${D}${f} ]]; then
+			incl_d[${#incl_d[@]}]=${f}
+		else
+			incl_f[${#incl_f[@]}]=${f}
+		fi
+	done
+
+	# Queue up for compression.
+	# ecompress{,dir} doesn't like to be called with empty argument lists.
+	[[ ${#incl_d[@]} -gt 0 ]] && ecompressdir --queue "${incl_d[@]}"
+	[[ ${#incl_f[@]} -gt 0 ]] && ecompress --queue "${incl_f[@]/#/${D}}"
+	[[ ${#exclude[@]} -gt 0 ]] && ecompressdir --ignore "${exclude[@]}"
+	return 0
+}
+
 install_qa_check() {
 	local f
 
@@ -47,6 +143,7 @@ install_qa_check() {
 
 	export STRIP_MASK
 	prepall
+	hasq "${EAPI}" 0 1 2 3 || prepcompress
 	ecompressdir --dequeue
 	ecompress --dequeue
 
-- 
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