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ulenrich
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Joined: 10 Oct 2010
Posts: 1482

PostPosted: Sun Jun 30, 2024 7:02 pm    Post subject: using the cache to quickly get package info Reply with quote

Code:
#!/bin/bash

if [[ "$1" = "--help" ]] ||[[ "$1" = "-h" ]];then
   echo "Search for Gentoo package names, like:"
   echo "$0  /ash  dev/  gcc$  ^sys"
   echo "This makes use of a cache REPOPATHNAME/metadata/pkg_desc_index"
   echo "If your REPO doesn't have the cache, then put an executable at"
   echo "/etc/portage/repo.postsync.d/SCRIPT"
   echo 'having the line:  egencache --update-pkg-desc-index --repo $1'
   exit
fi

function repoLocation() {
   D="";repo="$1"
   conF="/etc/portage/repos.conf/${repo%.conf}.conf"
   [ ! -s "${conF}" ] &&echo "cannot find repository ${repo}" &&return
   D=$(sed -n -e's/#.*//' -e'y/"/ /' -e"y/'/ /"\
    -e'/^location[ =]*/{s_.*=__;s_[[:blank:]]*\(.*\)[[:blank:]]*_\1_p;q}'\
    ${conF})
   [[ -d "$D" ]] &&echo $D
}

dfile=""
for i in /etc/portage/repos.conf/* ;do
   b=$(basename $i)
   L="$(repoLocation $b)/metadata/pkg_desc_index"
   [ -f $L ] \
     &&dfile="${dfile} $L"  \
     ||echo "missing cache, use egencache to create $L" >&2
done
if [[ "${dfile}" = "" ]] ;then
  dfile="/var/db/repos/gentoo/metadata/pkg_desc_index"
  [[ ! -f $dfile ]] \
   &&echo "missing cache - try the egencache tool" \
   &&exit
fi

T=""
while [ "$1" != "" ] ;do
  sed -E -n -e's/ .*$//' -e"\,$1, p"  ${dfile}
  shift
done |sort -u \
  |while read p ;do
    q=$(echo /var/db/pkg/${p}-[0-9]* )
    if [ -d "${q}" ] ;then
      echo -e -n "emerged\t ${q#/var/db/pkg/}   " \
       &&sed -e"s/amd64.*$/amd64/" -e"s/.* //" $q/KEYWORDS
      T=$(cat $q/DESCRIPTION )
      grep -e"^${p} " ${dfile} \
      |sed -e's%^.*/\(.*\)/metadata/pkg_desc_index:%\1\t %' -e's/:.*$//'
    else
      grep -e"^${p} " ${dfile} \
      |sed -e's%^.*/\(.*\)/metadata/pkg_desc_index:%\1\t %' -e's/:/\n\t/'
    fi
    [ "$T" != "" ] \
      &&echo -e -n "\t $T  " \
      &&T="" \
      &&[ -f "$q/HOMEPAGE" ] \
      &&cat $q/HOMEPAGE
     echo ""
  done
exit

Sorry my coding style.
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ulenrich
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Joined: 10 Oct 2010
Posts: 1482

PostPosted: Sun Jun 30, 2024 9:24 pm    Post subject: Reply with quote

Output sample:
Code:
$ genlist  app.*/portage
gentoo    app-metrics/portage-exporter 0.1.0
    Prometheus exporter for Gentoo Portage

guru    app-portage/portage-lostfiles 0.5.5
    A simple script to identify files not tracked by Portage package manager

emerged    app-portage/portage-utils-0.96.1   amd64
gentoo    app-portage/portage-utils 0.95-r1 0.96-r1 0.96.1 0.97 9999
    Small and fast Portage helper tools written in C  https://wiki.gentoo.org/wiki/Portage-utils

emerged    sys-apps/portage-3.0.65   ~amd64
gentoo    sys-apps/portage 3.0.61-r1 3.0.63-r1 3.0.64-r3 3.0.65 9999
    The package management and distribution system for Gentoo  https://wiki.gentoo.org/wiki/Project:Portage
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pietinger
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Joined: 17 Oct 2006
Posts: 4580
Location: Bavaria

PostPosted: Sun Jun 30, 2024 10:07 pm    Post subject: Reply with quote

Moved from Deutsche Dokumentation to Documentation, Tips & Tricks.

... because it is an english docu.
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