Sometimes users would like to use the output of emerge --pretend somepackage as a list of packages to later feed back to emerge. For example emerge -p package > list.txt && do some stuff to list.txt && emerge `cat list.txt`. Although this is possible with some manual string parsing (e.g. using sed or cut) for less experienced users it would be nice if emerge did it by itself. Therefore I have attached a patch to emerge (and to emergehelp.py) which adds a --namesonly (-y short option) option to emerge to accomplish this task. It is my first ever patch to anything Gentoo (or anything at all) so there may be some problems, but it seems to work on my machine - hope it comes to some use =) Reproducible: Always Steps to Reproduce: 1. 2. 3.
Created attachment 74378 [details, diff] patch to emerge sorry, didn't know to diff -u. done now. patch for my emerge. emerge --version: Portage 2.0.53 (default-linux/amd64/2005.0, gcc-3.4.4, glibc-2.3.5-r3, 2.6.14-gentoo-r4 x86_64)
Created attachment 74379 [details, diff] patch to emergehelp.py patch to my /usr/lib/portage/pym/emergehelp.py (Portage 2.0.53 (default-linux/amd64/2005.0, gcc-3.4.4, glibc-2.3.5-r3, 2.6.14-gentoo-r4 x86_64))
that's the point of --columns $ emerge openssh --columns -p [ebuild R ] net-misc/openssh [4.2_p1] considering how trivial it is to then extract just the package name, this patch is just fluff
Comment on attachment 74378 [details, diff] patch to emerge sorry, didn't know to diff -u. done now. this patch is unreadable always use `diff -u`
(In reply to comment #3) > that's the point of --columns > > $ emerge openssh --columns -p > [ebuild R ] net-misc/openssh [4.2_p1] > > considering how trivial it is to then extract just the package name, > this patch is just fluff it's not easy to copy package names from --columns output in a xterm... unless i'm missing something? and what if you wanted to include the output in a script so you didn't have to do any manual copying?
Comment on attachment 74378 [details, diff] patch to emerge sorry, didn't know to diff -u. done now. --- /usr/bin/emerge.bak 2005-12-02 11:51:36.000000000 +1100 +++ /usr/bin/emerge 2005-12-10 01:58:15.000000000 +1100 @@ -37,6 +37,8 @@ "Inaccuracy saves a world of explanation.", ] +def update_no_spinner(): + return def update_basic_spinner(): global spinner, spinpos @@ -72,7 +74,6 @@ if not sys.stdout.isatty() or ("--nospinner" in sys.argv): update_spinner = update_basic_spinner - if (not sys.stdout.isatty()) or (portage.settings["NOCOLOR"] in ["yes","true"]): nocolor() @@ -176,6 +177,7 @@ "--fetchonly", "--fetch-all-uri", "--getbinpkg", "--getbinpkgonly", "--help", "--noconfmem", +"--namesonly", "--newuse", "--nocolor", "--nodeps", "--noreplace", "--nospinner", "--oneshot", @@ -209,7 +211,8 @@ "s":"--search", "S":"--searchdesc", 't':"--tree", "u":"--update", "U":"--upgradeonly", -"v":"--verbose", "V":"--version" +"v":"--verbose", "V":"--version", +"y":"--namesonly" } myaction=None @@ -287,8 +290,10 @@ else: myfiles.append(x) +if ("--namesonly" in myopts): + update_spinner = update_no_spinner -if "moo" in myfiles: +if "moo" in myfiles and "--namesonly" not in myopts: print """ Gentoo (""" + os.uname()[0] + """) @@ -329,6 +334,14 @@ print ">>> --tree implies --pretend... adding --pretend to options." myopts.append("--pretend") +# --namesonly only makes sense with --pretend +if "--namesonly" in myopts and not (("--pretend" in myopts) or ("--ask" in myopts)): + myopts.append("--pretend") + +# Allow --namesonly to use --quiet +if "--namesonly" in myopts and not ("--quiet" in myopts): + myopts.append("--quiet") + # Also allow -S to invoke search action (-sS) if ("--searchdesc" in myopts): if myaction and myaction != "search": @@ -379,6 +392,14 @@ print ">>> --pretend disables --ask... removing --ask from options." myopts.remove("--ask") +# Allow --namesonly to remove --verbose +if ("--namesonly" in myopts) and ("--verbose" in myopts): + myopts.remove("--verbose") + +# Allow --namesonly to remove --columns +if ("--namesonly" in myopts) and ("--columns" in myopts): + myopts.remove("--columns") + # forbid --ask when not in a terminal # note: this breaks `emerge --ask | tee logfile`, but that doesn't work anyway. if ("--ask" in myopts) and (not sys.stdin.isatty()): @@ -1652,6 +1673,8 @@ myprint=myprint+" "*(oldlp-nc_len(myprint)) myprint=myprint+myoldbest myprint=myprint+darkgreen(" to "+x[1])+" "+verboseadd + elif "--namesonly" in myopts: + myprint="="+darkgreen(x[2]) else: myprint="["+x[0]+" "+addl+"] "+darkgreen(x[2])+" "+myoldbest+" "+darkgreen("to "+x[1])+" "+verboseadd else: @@ -1663,6 +1686,8 @@ if (oldlp-nc_len(myprint)) > 0: myprint=myprint+(" "*(oldlp-nc_len(myprint))) myprint=myprint+myoldbest+" "+verboseadd + elif "--namesonly" in myopts: + myprint="="+darkgreen(x[2]) else: if x[3]=="nomerge": myprint=darkblue("[nomerge ] "+indent+x[2]+" "+myoldbest+" ")+verboseadd @@ -1670,7 +1695,7 @@ myprint="["+x[0]+" "+addl+"] "+indent+darkgreen(x[2])+" "+myoldbest+" "+verboseadd p.append(myprint) - if ("--tree" not in myopts): + if ("--tree" not in myopts and "--namesonly" not in myopts): mysplit=portage.pkgsplit(x[2]) # XXX mysplit _can_ be None.... Why? @@ -2122,7 +2147,7 @@ print "="+string.join(sp_absx[sp_vdb_len:],"/") candidate_catpkgs.append("="+string.join(sp_absx[sp_vdb_len:],"/")) - if ("--pretend" in myopts) or ("--ask" in myopts): + if (("--pretend" in myopts) and ("--namesonly" not in myopts)) or ("--ask" in myopts): print darkgreen("\n>>> These are the packages that I would unmerge:") pkgmap={} @@ -3089,7 +3114,7 @@ else: favorites=[] syslist=getlist("system") - if (("--pretend" in myopts) and not ("--fetchonly" in myopts or "--fetch-all-uri" in myopts)) or ("--ask" in myopts): + if (("--pretend" in myopts) and not ("--fetchonly" in myopts or "--fetch-all-uri" in myopts) and not ("--namesonly" in myopts)) or ("--ask" in myopts): if "--tree" in myopts: print print darkgreen("These are the packages that I would merge, in reverse order:") @@ -3122,24 +3147,28 @@ mydepgraph=depgraph(myaction,myopts) if myaction in ["system","world"]: - print "Calculating",myaction,"dependencies ", - sys.stdout.flush() + if ("--namesonly" not in myopts): + print "Calculating",myaction,"dependencies ", + sys.stdout.flush() if not mydepgraph.xcreate(myaction): print "!!! Depgraph creation failed." sys.exit(1) - print "\b\b ...done!" + if ("--namesonly" not in myopts): + print "\b\b ...done!" else: if not myfiles: print "emerge: please tell me what to do." help() sys.exit(1) #we don't have any files to process; skip this step and exit - print "Calculating dependencies ", - sys.stdout.flush() + if ("--namesonly" not in myopts): + print "Calculating dependencies ", + sys.stdout.flush() retval,favorites=mydepgraph.select_files(myfiles) if not retval: sys.exit(1) - print "\b\b ...done!" + if ("--namesonly" not in myopts): + print "\b\b ...done!" if ("--usepkgonly" in myopts) and mydepgraph.missingbins: sys.stderr.write(red("The following binaries are not available for merging...\n"))
Created attachment 74380 [details, diff] emerge patch
Created attachment 74381 [details, diff] emergehelp.py patch
$ emerge openssh -p --columns | awk '{print $4}' net-misc/openssh
(In reply to comment #9) > $ emerge openssh -p --columns | awk '{print $4}' > net-misc/openssh try emerge -pe --columns openssh | awk '{print $4}' the output includes junk like packages ...done! and portage so -u because of the introductory text emerge prints and also the portage update message. these are suppressed by my patch but would require more complicated shell scripts to get rid of on a regular basis.
(In reply to comment #10) > because of the introductory text emerge prints and also the portage update > message. these are suppressed by my patch but would require more complicated > shell scripts to get rid of on a regular basis. emerge openssh -ep --columns | awk '/\[ebuild/{print $4}' Doesn't seem too complicated to me.
(In reply to comment #11) > (In reply to comment #10) > > because of the introductory text emerge prints and also the portage update > > message. these are suppressed by my patch but would require more complicated > > shell scripts to get rid of on a regular basis. > > emerge openssh -ep --columns | awk '/\[ebuild/{print $4}' > > Doesn't seem too complicated to me. > ok then. but is there a somewhere this could be published? i know for one population of people awk is obvious and second-nature, but for another--the ones who ask me why emerge can't print names only--awk is unheard of. do gentoo users not have the choice to remain oblivious to awk and similar external solutions? (at least for this issue which seems to be fairly common to me)
i plan on fixing up emerge in portage to better respect --quiet to ease scripting purposes thus `emerge -qp --columns world` would only output the stuff needed
i concede the uselessness. it was a good experience to look at the emerge code =)
Uhm... I'd like to re-open this one, I write many scripts to automate and manage machines and it's harder to explain the: sed -e 's:.*] \(.*\)-[0-9].*:\1:' in emerge -pe --nocolor world | sed -e 's:.*] \(.*\)-[0-9].*:\1:' To console neophytes. The "output package names only" feature would be greatly appreciated and, IMHO, closer to the Linux/Unix philosophy of CLI tools.
Try this for your scripting needs. qatom $(emerge --nospinner -qpuND world | grep ^'\[ebuild '| \ cut -d ']' -f 2- |awk '{print $1}') | awk '{print $1"/"$2}' qatom comes from portage-utils and is intended for uses like the one you need.
(In reply to comment #16) Uhm, you ralize your command line piping is much more complicated and less efficient than my present approach (calling 5 external apps in stead of 1): > qatom $(emerge --nospinner -qpuND world | grep ^'\[ebuild '| \ > cut -d ']' -f 2- |awk '{print $1}') | awk '{print $1"/"$2}' > > qatom comes from portage-utils and is intended for uses like the one you need. My present "hack" to only get package names is: emerge --nospinner --nocolor -qpuNDe world | sed -e 's:.*] \(.*\)-[0-9].*:\1:' As stated before, I'm only adding : sed -e 's:.*] \(.*\)-[0-9].*:\1:' The point is, there should be a way for portage to produce an output with requires no pre-treatment for direct piping purposes. ;)
(In reply to comment #17) > (In reply to comment #16) > Uhm, you ralize your command line piping is much more complicated and less > efficient than my present approach (calling 5 external apps in stead of 1): > > > qatom $(emerge --nospinner -qpuND world | grep ^'\[ebuild '| \ > > cut -d ']' -f 2- |awk '{print $1}') | awk '{print $1"/"$2}' > > > > qatom comes from portage-utils and is intended for uses like the one you need. > > My present "hack" to only get package names is: > emerge --nospinner --nocolor -qpuNDe world | sed -e 's:.*] \(.*\)-[0-9].*:\1:' > > As stated before, I'm only adding : > sed -e 's:.*] \(.*\)-[0-9].*:\1:' > > The point is, there should be a way for portage to produce an output with > requires no pre-treatment for direct piping purposes. ;) > If the dep resolver wasn't built into emerge this would be trivial, I don't want to add more silly --hacks and if("foo") then display crap to depgraph.display(). If nothing else, depgraph needs a seperate display function that only displays the nodes in it.
