To have a fast look at ebuilds

[kKDu]

[NOTE]: The same result of these script you can get now with esearch.

Code: Select all

esearch -e sylpheed-claws
[ U] sylpheed-claws (0.9.7):  Bleeding edge version of Sylpheed
 Portage [1] sylpheed-claws-0.9.5-r1
 Portage [2] sylpheed-claws-0.9.7
 Portage [3] sylpheed-claws-0.9.8
 Overlay [4] sylpheed-claws-0.9.5-r2
 
Show Ebuild:

Only the lookout is little different.
[/NOTE]

Often I would like to have a fast look in a ebuild. So I have created a short script, called ecat, that is doing this.

Now I must only write

Code: Select all

ecat sylpheed-claws

in any directory and I see a list in which I can choose the sylpheed-claws-ebuild I want to see.

Code: Select all

evim sylpheed-claws
The last stable version is:
  [ U] sylpheed-claws (0.9.7): Bleeding edge version of Sylpheed
  
Choose a ebuild...:
[ 1 ]   sylpheed-claws-0.9.5-r1
[ 2 ]   sylpheed-claws-0.9.7
[ 3 ]   sylpheed-claws-0.9.8
[ 4 O]   sylpheed-claws-0.9.5-r2
...by entering a number:

Here is the script:
NOTE: You must have emerged esearch

Code: Select all

#!/bin/bash

# here you can put an editor of your choice, if you
# don't want to use the global $EDITOR
LOCAL_EDITOR=""  

if [ "$LOCAL_EDITOR" ]; then
  ECAT="$LOCAL_EDITOR"
elif [ "$EDITOR" ]; then
  ECAT="$EDITOR"
else 
  ECAT="cat"
fi

PORTDIR="/usr/portage"
#Looks for ${PORTDIR} and ${PORTDIR_OVERLAY}
source /etc/make.conf

#Set up colors
NO="\x1b[0;0m"
BR="\x1b[0;01m"
CY="\x1b[36;01m"
GR="\x1b[32;01m"

#Use ${PORTDIR} if it exists
if [ -d ${PORTDIR}"/"`esearch -n ^$1\$ | awk 'NR==4 { print $2 }'` ]; then
  edir=${PORTDIR}"/"`esearch -n ^$1\$ | awk 'NR==4 { print $2 }'`
fi
#Use ${PORTDIR_OVERLAY} if it exists, too.
if [ -d ${PORTDIR_OVERLAY}"/"`esearch -n ^$1\$ | awk 'NR==4 { print $2 }'` ]; then
  edir_overlay=${PORTDIR_OVERLAY}"/"`esearch -n ^$1\$ | awk 'NR==4 { print $2 }'`
fi

echo -e $GR"The last stable version is:"$NO
echo "  "`esearch -c ^$1\$`
echo " "
echo -e $GR"Choose a ebuild...:"$NO
#List the ebuilds. Ebuilds, that are in ${PORTDIR_OVERLAY} are listen at
#the end with a O next to their number
declare -a ebuild
for i in `ls $edir | awk '/ebuild$/ { print }'`;do
  z=$[$z+1]
  echo -e "["$CY $z $NO"]  "$BR $i $NO | sed 's/\.ebuild//g'
  ebuild[$z]=$i
done
for i in `ls $edir_overlay | awk '/ebuild$/ { print }'`; do
  z=$[$z+1]
  echo -e "["$CY $z" O"$NO"]  "$BR $i $NO | sed 's/\.ebuild//g'
  ebuild[$z]=$i
done
echo -ne $GR"...by entering a number: "$NO
read number
if [ $number ]; then
  echo " "
  echo "   * * * "$ECAT" "${ebuild[$number]}" * * *"
  echo " "
  if [ -e $edir/${ebuild[$number]} ]; then
    $ECAT $edir/${ebuild[$number]} #| less
  else
    $ECAT $edir_overlay/${ebuild[$number]} #| less
  fi 
fi

Changelog
2003-10-03 if you press enter instead of a number, you are leaving the script
2003-10-21 change the editor choosing dialog
2004-01-21 now overlay works correct and I have change the EDITOR dialog again

[Pythonhead]

Very handy.

It would be nice if you could have it also check the overlay directory.
You could grab those values pretty easily with:

Code: Select all

source /etc/make.conf

Then reference ${PORTDIR} and ${PORTDIR_OVERLAY}

[kKDu]

Nice trick.

I have added it

But not enough, now only /usr/portage, ${PORTDIR} or {PORTDIR_OVERLAY} are avaiable. But if you have some ebuilds in /usr/portage for mozilla and some in ${PORTDIR_OVERLAY}, only ebuilds in /usr/portage will be avaiable.

I'm going to change this

[kKDu]

Now it works for me with all, ${PORTDIR} and ${PORTDIR_OVERLAY} ebuilds. Ebuilds from ${PORTDIR_OVERLAY} are identified with a O next to their number:

Code: Select all

root #ecat freevo
The last stable version is:
  [MN] freevo (1.3.4): Digital video jukebox (PVR, DVR). [ N] freevo (1.3.1): Freevo
  
Choose a ebuild...:
[ 1 ]   freevo-1.3.4
[ 2 O]   freevo-1.3.1
[ 3 O]   freevo-1.3.2_pre2-r2
[ 4 O]   freevo-1.3.2_pre3
[ 5 O]   freevo-1.3.2_pre4
...by entering a number:

Have fun with it

[kKDu]

Important change (see change-log)

[saskatchewan46]

This is very useful and fast script. I edited it slightly and renamed it "enano" as I nano the ebuild rather than cat. Thanks muchly for this...

[BitJam]

Kudos kKDu for a great script. It deserves a place in gentoolkit.

[haceye]

Hi,

I have talked to kKDu and he allowed me to add a similar function to directly into esearch.

You can use it like this:

Code: Select all

$ emerge ">=esearch-0.5" # You need the current version
$ esearch -e gentoolkit
[ U] gentoolkit (0.1.33):  Collection of unofficial administration scripts for Gentoo
 Portage [1] gentoolkit-0.1.32
 Portage [2] gentoolkit-0.1.33
 Portage [3] gentoolkit-0.1.32-r1

Show Ebuild: 2
# ...

David

[BitJam]

I have talked to kKDu and he allowed me to add a similar function to directly into esearch.

It works great! I have one suggestion. After I am done looking at an ebuild I would prefer to be taken back to the list of ebuilds instead of exiting. Maybe the choice of zero could be used to exit.

[kKDu]

Oh yes, it works

The only thing, I'm missing is a sort list of output:

Code: Select all

 esearch -e mozilla
...
[ U] mozilla (1.4-r3):  The Mozilla Web Browser
 Portage [7] mozilla-1.5
 Portage [8] mozilla-1.4-r3
 Portage [9] mozilla-1.0.1-r3
 Portage [10] mozilla-1.1-r1
 Portage [11] mozilla-1.4-r4
 Portage [12] mozilla-1.3-r2
 Portage [13] mozilla-1.2.1-r5

like this

Code: Select all

ecat mozilla
The last stable version is:
  [ U] mozilla (1.4-r3): The Mozilla Web Browser
  
Choose a ebuild...:
[ 1 ]   mozilla-1.0.1-r3
[ 2 ]   mozilla-1.1-r1
[ 3 ]   mozilla-1.2.1-r5
[ 4 ]   mozilla-1.3-r2
[ 5 ]   mozilla-1.4-r3
[ 6 ]   mozilla-1.4-r4
[ 7 ]   mozilla-1.5
...by entering a number:

[haceye]

Hi kKDu (I hope I spelled it right ),

I noticed this error, too. It occurs because listdir() doesn't sort it's output. Here's a little patch to fix this.
Will be part of esearch-0.5.1, of course.

Code: Select all

54c54,56
<         for file in listdir(path):
---
>         list = listdir(path)
>         list.sort()
>         for file in list:

David

[meowsqueak]

Why not have a variable defined at the top that you can easily change to support nano, vi, etc. Then you don't have to worry about searching and replacing through the script.

[BitJam]

Why not have a variable defined at the top that you can easily change to support nano, vi, etc. Then you don't have to worry about searching and replacing through the script.

The $PAGER variable might be a good choice. This should already be set to the pager of choice for most people and can be overrriden via:

Code: Select all

PAGER=wacky_pager ecat ebuild

[meowsqueak]

No, do not use $PAGER throughout the script - that would not improve anything. Instead, use an internal variable everywhere in the script, and at the start, set this variable to $PAGER. Some people use this script with nano or vi, which is usually not in $PAGER, and may be in $EDITOR. Having to replace all instances of PAGER with EDITOR defeats the purpose of my original idea, but if there's a single line that you can change to, e.g. 'local PROG=$EDITOR' then it becomes easier to change. This is something that should be considered in ALL scripts - hardcoded program locations are bad too.

Define everything at the start, then use those internal variables throughout the script. That's part of what makes a script well-written.

[Genone]

We also have now ewhich in gentoolkit which will give you the ebuild filename portage would use for a given package name.

[kKDu]

For all that have had problems with the overlay-directory and the sort of the ebuilds, this is now fixed.

NOTE: you don't need this script, if you are happy with esearch -e, which does the same.

[razamatan]

We also have now ewhich in gentoolkit which will give you the ebuild filename portage would use for a given package name.

thanks for the heads up...

Code: Select all

vi `ewhich [pkgname]`

lovely.