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euse
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#!/bin/bash
# Disable globbing because "-*" and such is valid as a use flag.
set -f
# bash replacement for the original euse by Arun Bhanu
# Author: Marius Mauch <[email protected]>
# Jared Hancock (Signigicant rewrite for package.use support)
# Licensed under the GPL v2
PROGRAM_NAME=euse
VERSION="@VERSION@"
EPREFIX=${EPREFIX:-$(portageq envvar EPREFIX)}
ETC="${EPREFIX}/etc"
USR_SHARE_PORTAGE="${EPREFIX}/usr/share/portage"
# Arrays containing the known repository names and repository profile paths
PORTAGE_REPOS=( $(portageq get_repos ${EPREFIX}/) )
PORTAGE_REPO_PATHS=( $(portageq get_repo_path ${EPREFIX}/ ${PORTAGE_REPOS[@]}) )
# define error functions so they can be used immediately
fatal() {
echo -e "ERROR: ${*}"
set +f
exit 1
}
error() {
echo -e "ERROR: ${*}"
}
warn() {
echo -e "WARNING: ${*}"
}
# /etc/make.conf now exists as /etc/portage/make.conf by default, prefer
# it over /etc/make.conf for changes.
if [[ -e "${ETC}/portage/make.conf" ]]; then
MAKE_CONF_PATH="${ETC}/portage/make.conf"
elif [[ -e "${ETC}/make.conf" ]]; then
MAKE_CONF_PATH="${ETC}/make.conf"
else
fatal "make.conf does not exist"
fi
MAKE_CONF_BACKUP_PATH="${MAKE_CONF_PATH}.euse_backup"
# /etc/make.globals has been moved to /usr/share/portage/config/make.globals
if [ -e "${USR_SHARE_PORTAGE}/config/make.globals" ]; then
MAKE_GLOBALS_PATH="${USR_SHARE_PORTAGE}/config/make.globals"
else
MAKE_GLOBALS_PATH="${ETC}/make.globals"
fi
# /etc/make.profile or /etc/portage/make.profile, if /etc/make.profile exists, it will be used
if [ -e "${ETC}/make.profile" ]; then
MAKE_PROFILE_PATH="${ETC}/make.profile"
elif [ -e "${ETC}/portage/make.profile" ]; then
MAKE_PROFILE_PATH="${ETC}/portage/make.profile"
else
fatal "make.profile does not exist"
fi
PACKAGE_USE_PATH=${ETC}/portage/package.use
[ -z "${MODE:-}" ] && MODE="showhelp" # available operation modes: showhelp, showversion, showdesc, showflags, modify
parse_arguments() {
if [ -z "${1}" ]; then
return
fi
while [ -n "${1}" ]; do
case "${1}" in
-h | --help) MODE="showhelp";;
-V | -v | --version) MODE="showversion";;
-i | --info) MODE="showdesc";;
-I | --info-installed) MODE="showinstdesc";;
-l | --local) SCOPE="local";;
-g | --global) SCOPE="global";;
-a | --active) MODE="showflags";;
-E | --enable) MODE="modify"; ACTION="add";;
-D | --disable) MODE="modify"; ACTION="remove";;
-P | --prune | -R | --remove)
MODE="modify"; ACTION="prune";;
-p | --package) MODE="modify"; shift; PACKAGE=${1}; SCOPE="local";;
-*)
echo "ERROR: unknown option ${1} specified."
echo
MODE="showhelp"
;;
"%active")
get_portageuseflags
ARGUMENTS="${ARGUMENTS:-} ${ACTIVE_FLAGS[9]}"
;;
*)
ARGUMENTS="${ARGUMENTS:-} ${1}"
;;
esac
shift
done
}
get_real_path() {
set -P
cd "$1"
pwd
cd "$OLDPWD"
set +P
}
# Function: check_sanity {{{
# Performs some basic system sanity checks
check_sanity() {
# file permission tests
local make_defaults
local make_conf
[[ ! -d "${MAKE_PROFILE_PATH}" || ! -r "${MAKE_PROFILE_PATH}" ]] && error "${MAKE_PROFILE_PATH} is not readable"
#
for make_conf in $(get_all_make_conf); do
[ ! -r "${make_conf}" ] && fatal "${make_conf} is not readable"
done
[ ! -r "${MAKE_GLOBALS_PATH}" ] && fatal "${MAKE_GLOBALS_PATH} is not readable"
[ -z "$PORTAGE_REPO_PATHS" ] && fatal "Repository paths couldn't be determined"
for make_defaults in $(get_all_make_defaults); do
[ ! -r "$make_defaults" ] && fatal "$_make_defaults is not readable"
done
[ "${MODE}" == "modify" -a ! -w "${MAKE_CONF_PATH}" ] && fatal ""${MAKE_CONF_PATH}" is not writable"
[ "${MODE}" == "modify" -a -s "${PACKAGE_USE_PATH}" -a ! -w "${PACKAGE_USE_PATH}" ] && fatal ""${PACKAGE_USE_PATH}" is not writable"
return 0
} # }}}
showhelp() {
cat << HELP
${PROGRAM_NAME} (${VERSION})
Syntax: ${PROGRAM_NAME} <option> [suboptions] [useflaglist]
Options: -h, --help - show this message
-V, --version - show version information
-i, --info - show descriptions for the given useflags
-I, --info-installed - show descriptions for the given useflags and
their current impact on the installed system
-g, --global - show only global use flags (suboption)
-l, --local - show only local use flags (suboption)
-a, --active - show currently active useflags and their origin
-E, --enable - enable the given useflags
-D, --disable - disable the given useflags
-R, --remove - remove all references to the given flags from
make.conf and package.use to revert to default
settings
-P, --prune - alias for --remove
-p, --package - used with -E, -D, and -R to apply to a
specific package only
Notes: ${PROGRAM_NAME} currently works for global flags defined
in make.globals, make.defaults, make.conf, use.force, and use.mask
and local flags defined in package.use and individual package ebuilds.
It might have issues with cascaded profiles. If multiple options are
specified only the last one will be used.
HELP
}
showversion() {
cat << VER
${PROGRAM_NAME} (${VERSION})
Written by Marius Mauch
Copyright (C) 2004-2009 Gentoo Foundation, Inc.
This is free software; see the source for copying conditions.
VER
}
# Function: reduce_incrementals {{{
# remove duplicate flags from the given list in both positive and negative forms
# (but unlike portage always keep the last value even if it's negative)
# Otherwise the status flags could be incorrect if a flag appers multiple times in
# one location (like make.conf).
# Using python here as bash sucks for list handling.
# NOTE: bash isn't actually that bad at handling lists -- sh is. This may be
# worth another look to avoid calling python unnecessariy. Or we could
# just write the whole thing in python. ;)
reduce_incrementals() {
echo $@ | python -c "import sys
r=[]
for x in sys.stdin.read().split():
if x[0] == '-' and x[1:] in r:
r.remove(x[1:])
r.append(x)
elif x[0] != '-' and '-'+x in r:
r.remove('-'+x)
r.append(x)
elif x == '-*': r = ['-*']
elif x not in r: r.append(x)
print(' '.join(r))"
} # }}}
# Function: reduce_incrementals_trump {{{
# Similar to reduce_incrementals but negative flags trump positive
# flags, regardless of which follows which
reduce_incrementals_trump() {
echo $@ | python -c "import sys
r=[]
for x in sys.stdin.read().split():
if x[0] == '-' and x[1:] in r:
r.remove(x[1:])
r.append(x)
elif x == '-*': r = ['-*']
elif x not in r and not '-'+x in r: r.append(x)
print(' '.join(r))"
} # }}}
# Function: reduce_package_use {{{
# Similar to reduce_incrementals except converts lines from package atoms
# in /etc/portage/package.use files to lines of "pkg {[-]flag}*"
#
# Arguments:
# * - Lines of package atom followed by flags
# (app-editors/vim flag1 flag2 -flag3)
reduce_package_use() {
echo "${@}" | python -c "import sys,re
h={}; getflags=re.compile(r'(-?[\w*-]+)')
for x in sys.stdin.read().split('\n'):
if not x: continue
parts = x.lstrip().split(' ',1)
if len(parts)==1: continue
pkg=parts[0]
flags = getflags.findall(parts[1])
if not pkg in h: h[pkg]=[]
r=h[pkg]
for x in flags:
if x[0] == '-' and x[1:] in r:
r.remove(x[1:])
r.append(x)
elif x[0] != '-' and '-'+x in r:
r.remove('-'+x)
r.append(x)
elif x == '-*': r = h[pkg] = ['-*']
elif x not in r:
r.append(x)
print('\n'.join(['%s %s' % (pkg,' '.join(flgs)) for pkg,flgs in h.items() if len(flgs)]))"
} # }}}
# Function: get_useflags {{{
# Creates a bash array ACTIVE_FLAGS that contains the global use flags,
# indexed by origin: 0: environment, 1: make.conf, 2: make.defaults,
# 3: make.globals, and local use flags, indexed by origin: 4: package.use,
# 5: ebuild IUSE, 6: use.mask, 7: use.force,
# 9: flags indicated active by emerge --info (get_portageuseflags)
get_useflags() {
set +f
if [[ -z ${ACTIVE_FLAGS[4]} && ( $SCOPE == "local" || -z $SCOPE ) ]]; then
# Parse through /etc/portage/package.use
if [[ -d ${PACKAGE_USE_PATH} ]]; then
ACTIVE_FLAGS[4]="$( cat ${PACKAGE_USE_PATH}/* \
| sed -re "s/ *#.*$//g" -e "s/^ *$//g" )"
elif [[ -e ${PACKAGE_USE_PATH} ]]; then
# JWM, 23/12/2009: I edited this following line but I'm not sure if it's 100% correct.
ACTIVE_FLAGS[4]="$( sed -re "s/ *#.*$//g" -e "s/^ *$//g" \
${PACKAGE_USE_PATH})"
fi
# Simplify ACTIVE_FLAGS[4] to be lines of pkg {[-]flag}*
ACTIVE_FLAGS[4]="$(reduce_package_use "${ACTIVE_FLAGS[4]}")"
#
# ACTIVE_FLAGS[5] reserved for USE flags defined in ebuilds and
# is generated/maintained in the get_useflaglist_ebuild() function
fi
# only calculate once as calling emerge is painfully slow
[ -n "${USE_FLAGS_CALCULATED}" ] && return
ACTIVE_FLAGS[0]="$(reduce_incrementals "${USE}")"
USE=""
for x in $(get_all_make_conf); do
source "${x}"
ACTIVE_FLAGS[1]="$(reduce_incrementals "${ACTIVE_FLAGS[1]}" "${USE}")"
done
USE=""
for x in $(get_all_make_defaults); do
source "${x}"
ACTIVE_FLAGS[2]="${ACTIVE_FLAGS[2]} ${USE}"
done
ACTIVE_FLAGS[2]="$(reduce_incrementals "${ACTIVE_FLAGS[2]}")"
USE=""
source "${MAKE_GLOBALS_PATH}"
ACTIVE_FLAGS[3]="$(reduce_incrementals "${USE}")"
# restore saved env variables
USE="${ACTIVE_FLAGS[0]}"
#
# Traverse through use.mask and use.force (0.5s)
# Flip signs of use.mask (it's interpreted oppositely),
ACTIVE_FLAGS[6]=$(reduce_incrementals_trump \
$(cat $(traverse_profile "use.mask") | sed -re "/^#.*$/{d}") \
| sed -re "s/(^| )-[^ ]*//g" -e "s/(^| )([a-z0-9])/ -\2/g")
ACTIVE_FLAGS[7]=$(reduce_incrementals \
$(cat $(traverse_profile "use.force") \
| sed -re "/^#.*$/ {d}"))
USE_FLAGS_CALCULATED=1
set -f
} # }}}
# Function: get_portageuseflags # {{{
# Fetch USE flags reported active by Portage
get_portageuseflags() {
# only calculate once as calling emerge is painfully slow
[ -n "${_PORTAGE_USE_FLAGS_CALCULATED}" ] && return
# get the currently active USE flags as seen by portage, this has to be after
# restoring USE or portage won't see the original environment
# Bug 181309, emerge may complain if EMERGE_DEFAULT_OPTS="--ask" is set
ACTIVE_FLAGS[9]="$(portageq envvar USE)" #'
_PORTAGE_USE_FLAGS_CALCULATED=1
} # }}}
# Function: get_useflaglist {{{
# Get the list of all known USE flags by reading use.desc and/or
# use.local.desc (depending on the value of $SCOPE). Also searches any
# registered overlays after searching the main portage tree first.
# Use flags visible in both the main tree and overlays are trumped by
# the main tree. Overlays are indicated by brackets [xxx] at the
# beginning of the description.
#
# Returns:
# (written to stdout) Sorted, unique list of system-wide USE flags and
# descriptions. Flags defined in overlays have the overlay in brackets
# prepended to the descriptions.
#
# Environment:
# SCOPE - [local|global] constrain search to local (use.local.desc) or
# global (use.desc)
get_useflaglist() {
local descdir
local overlay
for profiledir in ${PORTAGE_REPO_PATHS[@]}; do
descdir="${profiledir}/profiles"
if [[ -z ${SCOPE} || ${SCOPE} == "global" ]]; then
[[ ! -s "${descdir}/use.desc" ]] && continue
grep -E "^[^# ]+ +-" "${descdir}/use.desc"
fi
if [[ -z ${SCOPE} || ${SCOPE} == "local" ]]; then
[[ ! -s "${descdir}/use.local.desc" ]] && continue
grep -E "^[^# :]+:[^ ]+ +-" "${descdir}/use.local.desc" \
| cut -d: -f 2
fi
done | cut -d " " -f1 | sort --field=":" --key=1,1 --unique
} # }}}
# Function: get_useflaglist_ebuild {{{
# Builds USE flag information for specified package atom into
# ACTIVE_FLAGS[5]. For the atom, the versions available are found, and
# for each, the corresponding SLOT, IUSE are stored along with which
# overlay the ebuild lives in. Considering that the pieces of information
# may be required in any order or any subsets, it is intended for the
# function to cache the information and it be retrieved from
# ACTIVE_FLAGS[5]. So the format of ACTIVE_FLAGS[5] is newline-separated
# list of:
#
# category/packge;version;SLOT;IUSE;overlay
#
# Arguments:
# $1 - Package atom to lookup (app-editor/vim)
#
# Returns:
# Nothing significant
#
# Environment:
# ACTIVE_FLAGS - Array of current use flag info
#
get_useflaglist_ebuild() {
local known=$(echo "${ACTIVE_FLAGS[5]}" | grep -E "^${1}")
local cacheformat
if [[ -n $known ]]; then
# No need to recache
return
fi
local pkg=$(echo ${1} | cut -d/ -f2)
declare append
for portdir in ${PORTAGE_REPO_PATHS[@]}; do
if [[ -s "${portdir}/profiles/repo_name" ]]; then
overlay="$(cat "${portdir}/profiles/repo_name")"
else
# XXX: Portage uses "x-<basename of the overlay>
overlay="x-$(basename "${portdir}")"
fi
# Open the ebuild file and retrieve defined USE flags
[[ ! -d "$portdir/${1}" ]] && continue
cacheformat="unknown"
[[ -d "$portdir/metadata/cache" ]] && cacheformat="cache" # format is pms
[[ -d "$portdir/metadata/md5-cache" ]] && cacheformat="md5-cache" # format is md5-cache
if [[ "$cacheformat" == "unknown" ]]; then
echo "!!! Metadata cache not found. You need to run " >&2
echo "!!! 'egencache --repo=$overlay --update'" >&2
echo "!!! to generate metadata for your overlays" >&2
return 1
fi
append=$(set +f; ls ${portdir}/metadata/${cacheformat}/${1}-* \
| grep -E "${1}-[0-9.]+" \
| sed -e "s:${portdir}/metadata/${cacheformat}/${1}-::g" \
| while read -d $'\n' version; do
IFS=$'\n'
if [[ ! -e "${portdir}/metadata/${cacheformat}/${1}-$version" ]]; then
# Repo does not have this particular package
continue
fi
if [[ "${cacheformat}" == "cache" ]]; then
iuse=$(head -n 11 "${portdir}/metadata/${cacheformat}/${1}-$version"|tail -n 1)
slot=$(head -n 3 "${portdir}/metadata/${cacheformat}/${1}-$version"|tail -n 1)
elif [[ "${cacheformat}" == "md5-cache" ]]; then
iuse=$(grep "^IUSE=" "${portdir}/metadata/${cacheformat}/${1}-$version" | sed 's/^IUSE=//')
slot=$(grep "^SLOT=" "${portdir}/metadata/${cacheformat}/${1}-$version" | sed 's/^SLOT=//')
else
# This is a bug, we should have already returned
return 1
fi
echo "${1};${version};${slot};${iuse};${overlay}"
done
)
if [[ -z ${ACTIVE_FLAGS[5]} ]]; then ACTIVE_FLAGS[5]="$append"
else ACTIVE_FLAGS[5]="${ACTIVE_FLAGS[5]}"$'\n'"$append"
fi
done
} # }}}
# get all make.conf files that exist on the system
get_all_make_conf() {
# At least one of the files exists or we would not have made it this far
for x in ${ETC}/make.conf ${ETC}/portage/make.conf; do
[ -e "${x}" ] && echo "${x}"
done
}
# Function: traverse_profile {{{
# General method of collecting the contents of a profile
# component by traversing through the cascading profile
#
# Bug #414961 allows ':' shorthand to resolve to the profiles directory in a
# repository
#
# A value before the ':' references the repository, no value means same repo
#
# Example: local:base would refer to the profiles directory in the repository
# path owned by the 'local' repository
#
# Arguments:
# $1 - Filename (make.profile)
# [$2] - Current directory (unspecified means to start at the top)
traverse_profile() {
local curdir
local parent
local rvalue=""
curdir="${2:-$(get_real_path ${MAKE_PROFILE_PATH})}"
if [[ -f "${curdir}/parent" ]]; then
for parent in $(grep -E -v '(^#|^ *$)' ${curdir}/parent); do
# Bug 231394, handle parent path being absolute
index=$(expr index "${parent}" :)
if [[ ${parent:0:1} == "/" ]]; then
pdir="$(get_real_path ${parent})"
elif [[ $index -eq 0 ]]; then
pdir="$(get_real_path ${curdir}/${parent})"
else
# We have a path with a colon shortcut
let i=$index-1
repo="${parent:0:${i}}"
parent="${parent:$index}"
limit=${#PORTAGE_REPOS[@]}
for ((i=0; i < limit ; i++)); do
repo_profiles="${PORTAGE_REPO_PATHS[i]}/profiles"
if [[ "${repo}" == ${PORTAGE_REPOS[i]} ]] || \
( [[ -z "${repo}" ]] &&
[[ "${curdir}" == ${repo_profiles}/* ]] )
then
parent="${repo_profiles}/${parent}"
break
fi
done
pdir="$(get_real_path ${parent})"
fi
rvalue="${rvalue} $(traverse_profile ${1} ${pdir})"
done
fi
[[ -f "${curdir}/${1}" ]] && rvalue="${rvalue} ${curdir}/${1}"
echo "${rvalue}"
} # }}}
# Function: get_all_make_defaults {{{
# Det all make.defaults by traversing the cascaded profile directories
get_all_make_defaults() {
if [[ -z ${MAKE_DEFAULTS:-} ]]; then
MAKE_DEFAULTS=$(traverse_profile "make.defaults")
fi
echo $MAKE_DEFAULTS
} # }}}
MAKE_DEFAULTS=$(get_all_make_defaults)
# Function: get_flagstatus_helper # {{{
# Little helper function to get the status of a given flag in one of the
# ACTIVE_FLAGS elements.
#
# Returns:
# (Written to STDOUT) Flag active status (+/-) or default string given
# in argument 4 or an empty space
# Arguments:
# 1 - flag to test
# 2 - index of ACTIVE_FLAGS
# 3 - echo value for positive (and as lowercase for negative) test result
# 4 - (optional) echo value for "missing" test result, defaults to blank
get_flagstatus_helper() {
if [[ -z ${flags} ]]; then
local flags=${ACTIVE_FLAGS[${2}]}
fi
local flag=$(echo " $flags " | grep -Eo " [+-]?${1} ")
if [[ ${flag:1:1} == "-" ]]; then
echo -e -n "${3}" | tr [:upper:]+ [:lower:]-
elif [[ -n ${flag} ]]; then
echo -e -n "${3}"
else
echo -n "${4:- }"
fi
} # }}}
# Function: get_flagstatus_helper_pkg # {{{
# Entry to get_flagstatus_helper for packages which will fetch use
# flags set in package.use for the package and pass them on to
# get_flagstatus_helper. Also correcly handles lines in package.use
# specified for individual package versions
get_flagstatus_helper_pkg() {
if [[ -z ${2} ]]; then
echo -ne "${4:- }"
return
elif [[ -z ${flags} ]]; then
# If no atoms are matchers (start with >,<,=, then they all match
atoms=($2)
if [[ -z "${atoms[@]/[<>=]*/}" ]]; then
atoms=($(
echo "${atoms[@]}" | python -c "
import portage.dep as dep, sys
print(' '.join(dep.match_to_list('$5-$6',sys.stdin.read().split())))"))
fi
flags=$(for atom in ${atoms[@]}; do
[[ -z $atom ]] && continue
echo "${ACTIVE_FLAGS[4]}" | \
grep "^ *$atom" | cut -d\ -f2-
done)
fi
if [[ -z ${5} || -z ${flags} ]]; then
echo -e -n "${4:- }"
return
fi
get_flagstatus_helper "$@"
} # }}}
# Function: get_flagstatus_helper_ebuild {{{
# get_flagstatus_helper replacement for packages to fetch ebuild USE flag
# activation status.
#
# Returns:
# (Written to STDOUT) Flag active status (+/-) or default string given
# in argument 4 or an empty space. If USE flag is not defined in the list
# of flags (2), an '!' is written
#
# Arguments:
# 1 - flag to test
# 2 - IUSE line from ebuild file
# 3 - echo value for positive (and as lowercase for negative) test result
# 4 - (optional) echo value for "missing" test result, defaults to blank space
get_flagstatus_helper_ebuild() {
local flags=$(echo $2 | cut -d\" -f2)
local flag=$(echo " $flags " | grep -Eo " [+-]?$1 ")
if [[ ${flag:1:1} == "+" ]]; then
echo -en "${3}"
elif [[ ${flag:1:1} == "-" ]]; then
echo -en "${3}" | tr [:upper:]+ [:lower:]-
elif [[ -z $flag ]]; then
echo -en "!"
else
echo -en "${4:- }"
fi
} # }}}
# Function: get_flagstatus {{{
# Prints a status string for the given flag, each column indicating the presence
# for portage, in the environment, in make.conf, in make.defaults, in
# make.globals, and in use.force and flipped in use.mask.
#
# Arguments:
# 1 - use flag for which to retrieve status
#
# Returns:
# 0 (True) if flag is active, 1 (False) if not active
#
# Outputs:
# Full positive value would be "[+ECDGFm] ", full negative value would be [-ecdgfM],
# full missing value would be "[- ] " (portage only sees present or not present)
get_flagstatus() {
get_useflags
local E=$(get_flagstatus_helper "${1}" 0 "E")
local C=$(get_flagstatus_helper "${1}" 1 "C")
local D=$(get_flagstatus_helper "${1}" 2 "D")
local G=$(get_flagstatus_helper "${1}" 3 "G")
local M=$(get_flagstatus_helper "${1}" 6 "M")
local F=$(get_flagstatus_helper "${1}" 7 "F")
# Use flags are disabled by default
ACTIVE="-"
#
# Use flag precedence is defined (at least) at:
# http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=2
for location in "E" "C" "D" "G" "F" "M"; do
if [[ ${!location} == $location ]]; then
ACTIVE="+"
break
elif [[ ${!location} != " " ]]; then
ACTIVE="-"
break
fi
done
echo -n "[${ACTIVE:--}$E$C$D$G$F$M] "
[[ $ACTIVE == "+" ]]; return $?
} # }}}
# Function: get_flagstatus_pkg {{{
# Outputs local flag status information for a specific package and perhaps
# specific package version.
#
# Arguments:
# 1 - flag (gtk)
# 2 - package atom (www-client/elinks)
# 3 - +/- whether flag is enabled by global configuration files
# 4 - (Optional) version of package to evaluate (empty means all versions)
#
# Outputs:
# Flag status for package.use and ebuild, slot and version, and repository
# the version lives in if not gentoo
#
# Full positive would be "[+PB]", full negative would be "[-pb]", and full
# missing would be "[? ]", question because the sign will default to the
# sign of the global status of the flag
get_flagstatus_pkg() {
#
# Pre-cache the use flags declared in ebuilds first.
# This is required as calling it inside a $() seems to
# prevent caching of results into $ACTIVE_FLAGS array
get_useflaglist_ebuild ${2}
#
# Get list of ebuilds available for this package. The
# get_useflaglist_ebuild() function stores them in $ACTIVE_FLAGS[5]
# with the package name leading the lines. The other information
# is in the same line, semi-colon (;) separated. The fields are
# package;version;SLOT;IUSE;overlay
#
# Fetch package atoms and flags from package.use only once
local atoms=$(echo "${ACTIVE_FLAGS[4]}" | \
grep -Eo "^ *[<>]?=?${2}(-[0-9rp._*-]*)?")
local IFS=$'\n'; for pkgline in $(echo "${ACTIVE_FLAGS[5]}" | grep "^$2" \
| sort -t \; -k2,2 -V); do
OIFS=$IFS; IFS=";"; INFO=($pkgline); IFS=$OIFS;
local version=${INFO[1]}
[[ -n $4 && $4 != $version ]] && continue
local slot=${INFO[2]}
local iuse=${INFO[3]}
if [[ $slot == '0' || $slot == "" ]]; then
slot="";
else
slot="($(echo ${slot} | cut -d\" -f2)) "
fi
local overlay=${INFO[4]}
[[ -n $overlay ]] && overlay="[$overlay]"
#
# Fetch enabled status for this version
local P=$(get_flagstatus_helper_pkg "${1}" "${atoms}" "P" "" "${2}" "${version}")
local B=$(get_flagstatus_helper_ebuild "${1}" "${iuse}" "B" "" "${2}" "${version}")
UNUSED=0
ACTIVE=${3}
for location in "P" "B"; do
if [[ ${!location} == $location ]]; then
ACTIVE="+"
elif [[ ${!location} == "!" ]]; then
UNUSED=1
break
elif [[ ${!location} != " " ]]; then
ACTIVE="-"
break
fi
done
if [[ $UNUSED == 1 ]]; then
echo " ${slot}${version} ${overlay}"
else
echo " [${ACTIVE:-${3:- }}$P$B] ${slot}${version} ${overlay}"
fi
done
echo
} # }}}
# Function: array_contains {{{
# PHP-style array_contains function.
#
# Arguments:
# 1 - haystack
# 2 - needle
#
# Returns:
# 0 (True) if needle in haystack, null (False) otherwise
array_contains() {
for i in $1; do [[ $i == $2 ]] && return 0; done
return
} # }}}
# Function: showdesc {{{
# This function takes a list of use flags and shows the status and
# the description for each one, honoring $SCOPE
#
# Arguments:
# * - USE flags for which to display descriptions. Undefined means to
# display descriptions for all known USE flags
#
# Environment:
# SCOPE - defines whether to output local or global USE flag descriptions
# Empty means to display both
#
# Outputs:
# (STDOUT) Flag description(s) for given USE flags
#
showdesc() {
local current_desc
local found_one
local args
args="${*:-*}"
if [ -z "${SCOPE}" ]; then
SCOPE="global" showdesc "${args}"
echo
SCOPE="local" showdesc "${args}"
return
fi
local useflags=( $(echo "$(get_useflaglist)") )
[ "${SCOPE}" == "global" ] && echo "global use flags (searching: ${args})"
[ "${SCOPE}" == "local" ] && echo "local use flags (searching: ${args})"
echo "************************************************************"
if [ "${args}" == "*" ]; then
args="${useflags[*]}"
fi
set ${args}
foundone=0
while [[ -n "${1}" ]]; do
if [[ "${SCOPE}" == "global" ]]; then
if array_contains "${useflags[*]}" "$1"; then
get_flagstatus "${1}"
# XXX: Handle overlay
grep -h "^${1} *-" ${PORTAGE_REPO_PATHS[@]/%//profiles/use.desc} 2> /dev/null
foundone=1
fi
fi
# local flags are a bit more complicated as there can be multiple
# entries per flag and we can't pipe into printf
if [[ "${SCOPE}" == "local" ]]; then
if array_contains "${useflags[*]}" "$1"; then
foundone=1
fi
# Fetch all the packages data using this flag
infos=$( grep -h ":${1} *-" ${PORTAGE_REPO_PATHS[@]/%//profiles/use.local.desc} 2> /dev/null \
| sed -re "s/^([^:]+):(.*) *- *(.+)/\1|\2|\3/g")
OIFS=$IFS; IFS=$'\n'; infos=($infos); IFS=$OIFS;
for line in "${infos[@]}"; do
OIFS=$IFS; IFS="|"; line=($line); IFS=$OIFS
pkg=${line[0]}
flag=${line[1]}
desc=${line[2]}
if get_flagstatus "${flag}"; then
ACTIVE="+"
else
ACTIVE="-"
fi
printf "%s\n" "${flag}"
printf "%s: %s\n" "${pkg}" "${desc}" \
| fold --width=$((${COLUMNS:-80}-10)) -s | sed -e "s/^/ /g"
get_flagstatus_pkg "${flag}" "${pkg}" "${ACTIVE}"
done
fi
shift
done
if [[ ${foundone} == 0 ]]; then
echo "no matching entries found"
fi
} # }}}
# Function: showinstdesc {{{
# Works like showdesc() but displays only descriptions of which the appropriate
# ebuild is installed and prints the name of those packages.
#
# Arguments:
# * - USE flags for which to display descriptions. Undefined means to
# display descriptions for all known USE flags
#
# Environment:
# SCOPE - defines whether to output local or global USE flag descriptions
# Empty means to display both
#
# Outputs:
# (STDOUT) Flag description(s) for given USE flags along with installed
# packages
#
showinstdesc() {
local descdir
local current_desc
local args
local -i foundone=0
local OIFS="$IFS"
args=("${@:-*}")
case "${SCOPE}" in
"global") echo "global use flags (searching: ${args[@]})";;
"local") echo "local use flags (searching: ${args[@]})";;
*) SCOPE="global" showinstdesc "${args[@]}"
echo
SCOPE="local" showinstdesc "${args[@]}"
return;;
esac
echo "************************************************************"
if [ "${args}" = "*" ]; then
args="$(get_useflaglist | sort -u)"
fi
set "${args[@]}"
while [ -n "${1}" ]; do
case "${SCOPE}" in
"global")
local desc=$(grep "^${1} *-" ${PORTAGE_REPO_PATHS[@]/%//profiles/use.desc} 2>/dev/null)
if [ ! -z "${desc}" ]; then
get_flagstatus "${1}"
echo "$desc"
# get list of installed packages matching this USE flag.
IFS=$'\n'
packages=($(equery -q -C hasuse -i "${1}" | awk '{ print $(NF-1) }' | sort))
foundone+=${#packages[@]}
printf "\nInstalled packages matching this USE flag: "
if [ ${foundone} -gt 0 ]; then
echo $'\n'"${packages[*]}"
else
echo "none"
fi
fi
;;
"local")
# local flags are a bit more complicated as there can be multiple
# entries per flag and we can't pipe into printf
IFS=': ' # Use a space instead of a dash because dashes occur in cat/pkg
while read path pkg flag desc; do
# print name only if package is installed
# NOTE: If we implement bug #114086 's enhancement we can just use the
# exit status of equery instead of a subshell and pipe to wc -l
# Bug 274472, -e is the default
if [ $(equery -q -C list -i "${pkg}" | wc -l) -gt 0 ]; then
foundone=1
IFS="$OIFS"
get_flagstatus "${flag}" "${pkg}"
IFS=': '
printf "%s (%s):\n%s\n\n" "${flag}" "${pkg}" "${desc#- }"
fi
done < <(grep ":${1} *-" ${PORTAGE_REPO_PATHS[@]/%//profiles/use.local.desc} 2>/dev/null)
;;
esac
shift
done
if [ ${foundone} -lt 1 ]; then
echo "no matching entries found"
fi
IFS="$OIFS"
} # }}}
# Function: showflags {{{
# show a list of all currently active flags and where they are activated
showflags() {
local args
get_useflags
args="${*:-*}"
if [ "${args}" == "*" ]; then
args="$(get_useflaglist | sort -u)"
fi
set ${args}
get_portageuseflags
while [ -n "${1}" ]; do
if echo " ${ACTIVE_FLAGS[9]} " | grep " ${1} " > /dev/null; then
printf "%-20s" ${1}
get_flagstatus ${1}
echo
fi
if echo " ${ACTIVE_FLAGS[4]} " | grep -E -e " -?${1} " > /dev/null; then
for pkg in $( echo "${ACTIVE_FLAGS[4]}" | \
grep -E " -?${1} " | cut -d " " -f 2); do
printf "%-20s" ${1}
SCOPE="local" get_flagstatus ${1} "${pkg}"
printf "(%s)\n" ${pkg}
done;
fi
shift
done
} # }}}
# two small helpers to add or remove a flag from a USE string
add_flag() {
# Remove leading '-' from flag if found
local flag=$1
[[ ${flag:0:1} == "-" ]] && flag=${1:1}
if [[ -n $(grep " -${flag} " <<< " ${ACTIVE_FLAGS[6]} ") ]]; then
error "Use flag \"${flag}\" is masked and should not be added" \
"to make.conf."
return 1
# Bug #104396 -- Only add use flags defined in use.desc and use.local.desc
elif [[ -z $(grep "^${flag}$" <<< "$(get_useflaglist)") ]]; then
error "Use flag \"${flag}\" is not defined in use.desc and should" \
"not be added\nto make.conf."
return 1
else
NEW_MAKE_CONF_USE="${NEW_MAKE_CONF_USE} ${1}"
echo "Adding flag \"${1}\" to make.conf" >&2
fi
}
remove_flag() {
NEW_MAKE_CONF_USE="${NEW_MAKE_CONF_USE// ${1} / }"
echo "Removing flag \"${1}\" from make.conf" >&2
}
# Function: clean_package_use {{{
# Simple utility to remove empty files from package.use
clean_package_use() {
if [[ -d ${PACKAGE_USE_PATH} ]]; then
for f in $(find ${PACKAGE_USE_PATH} -size 0); do
echo "Removing empty file ""${f}"""
rm ${f}
done;
fi
} # }}}
# Function: scrub_use_flag {{{
# Utility to remove a use flag from a file in package.use[/]
#
# Arguments:
# 1 - File
# 2 - Use flag
#
# Environment:
# PACKAGE - Package atom for which to remove flag
scrub_use_flag() {
local atom_re="^[<>]?=?([a-z][\da-z/-]+[a-z])(-[0-9pr._*-]+)?"
local filename=${1}
# Ignore leading - on flag
local flag=${2#*-}
local pkg=$(echo "${PACKAGE}" | sed -re "s/${atom_re}/\1/")
local pkg_re="[<>]?=?${pkg}(-[\dpr._*-]+)?"
while read line; do
# Skip (preserve) comments on their own lines
if [[ -z $(echo "${line}" | sed -re "s/^ *#.*$//") ]]; then
echo "${line}"
# Detect if requested package is defined on this line
elif [[ -n "${PACKAGE}" ]]; then
if [[ -n $(echo "${line}" | grep -Ee "${pkg_re}") ]]; then
# If this is the only (remaining) use flag defined
# for this package, then remove the whole line
if [[ -z $(echo "${line}" | grep -Ee "${pkg_re} *-?${flag} *$") ]]; then
# Remove flag from this line
echo "${line}" | sed -re "s/ *-?\b${flag}\b//"
fi
else
# Passthru
echo "${line}"
fi
# If line only has this use flag, let it be removed
# (used if PACKAGE is not defined -- from pruning)
elif [[ -n $(echo "${line}" | \
grep -E "^[^#]*${atom_re}.*-?${flag}") ]]; then
echo "Removing use flag from ${line}" >&2
if [[ -z $(echo "${line}" | \
grep -Ee "${atom_re} *-?${flag} *$") ]]; then
# Remove flag from this line
echo "${line}" | sed -re "s/-?\b${flag}\b//"