From: Bert Wesarg <bert.wesarg@googlemail.com>
Date: Mon, 04 Oct 2010 06:43:52 GMT
Subject: Re: [TopGit PATCH 3/6] tg-files: list files changed by the topic branch
Message-ID: <AANLkTimLgWKPBjVAni=t6EK4Yr9FyJZa=Yk01SeMcwA1@mail.gmail.com>
In-Reply-To: <20101003220330.GE28679@pengutronix.de>

Hi,

2010/10/4 Uwe Kleine-König <u.kleine-koenig@pengutronix.de>:
> Hi Bert,
>
> On Sun, Oct 03, 2010 at 11:25:54PM +0200, Bert Wesarg wrote:
>> this could also be a --name-only option to tg-patch. But I Like the
>> similarity to 'quilt files'.
>>
>> Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
>>
>> ---
>>  .gitignore                 |    2 +
>>  README                     |    8 ++++++
>>  contrib/tg-completion.bash |    1 +
>>  tg-files.sh                |   52 ++++++++++++++++++++++++++++++++++++++++++++
>>  4 files changed, 63 insertions(+), 0 deletions(-)
>>
>> diff --git a/.gitignore b/.gitignore
>> index 0342e09..0dc4d0e 100644 .gitignore
>> --- a/.gitignore
>> +++ b/.gitignore
>> @@ -22,6 +22,8 @@
>>  /tg-depend.txt
>>  /tg-export
>>  /tg-export.txt
>> +/tg-files
>> +/tg-files.txt
>>  /tg-import
>>  /tg-import.txt
>>  /tg-info
>> diff --git a/README b/README
>> index f103d92..46f564a 100644 README
>> --- a/README
>> +++ b/README
>> @@ -272,6 +272,14 @@ tg depend
>>
>>       TODO: Subcommand for removing dependencies, obviously
>>
>> +tg files
>> +~~~~~~~~
>> +     List files changed by the current or specified topic branch.
>> +
>> +     Options:
>> +       -i            list files based on index instead of branch
>> +       -w            list files based on working tree instead of branch
>> +
>>  tg info
>>  ~~~~~~~
>>       Show a summary information about the current or specified
>> diff --git a/contrib/tg-completion.bash b/contrib/tg-completion.bash
>> index 0ee233c..38567d0 100755 contrib/tg-completion.bash
>> --- a/contrib/tg-completion.bash
>> +++ b/contrib/tg-completion.bash
>> @@ -467,6 +467,7 @@ _tg ()
>>       delete)      _tg_delete ;;
>>       depend)      _tg_depend ;;
>>       export)      _tg_export ;;
>> +     files)       _tg_patch ;;
>>       help)        _tg_help ;;
>>       import)      _tg_import ;;
>>       info)        _tg_info ;;
>> diff --git a/tg-files.sh b/tg-files.sh
>> new file mode 100644
>> index 0000000..0723bf1 tg-files.sh
>> --- /dev/null
>> +++ b/tg-files.sh
>> @@ -0,0 +1,52 @@
>> +#!/bin/sh
>> +# TopGit - A different patch queue manager
>> +# (c) Petr Baudis <pasky@suse.cz>  2008
>> +# GPLv2
>> +
>> +name=
>> +
>> +topic=
>> +diff_opts=
>> +diff_committed_only=yes      # will be unset for index/worktree
>> +
>> +
>> +## Parse options
>> +
>> +while [ -n "$1" ]; do
>> +     arg="$1"; shift
>> +     case "$arg" in
>> +     -i)
>> +             topic='(i)'
>> +             diff_opts="$diff_opts --cached";
>> +             diff_committed_only=;;
>> +     -w)
>> +             topic='(w)'
>> +             diff_committed_only=;;
>> +     -*)
>> +             echo "Usage: tg [...] files [-i | -w] [NAME]" >&2
>> +             exit 1;;
>> +     *)
>> +             [ -z "$name" ] || die "name already specified ($name)"
>> +             name="$arg";;
>> +     esac
>> +done
>> +
>> +
>> +[ -n "$name"  -a  -z "$diff_committed_only" ]  &&
>> +     die "-i/-w are mutually exclusive with NAME"
>> +
>> +[ -n "$name" ] || name="$(git symbolic-ref HEAD | sed 's#^refs/\(heads\|top-bases\)/##')"
>> +base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
>> +     die "not a TopGit-controlled branch"
>> +
>> +# if not index/worktree, topic is current branch
>> +[ -z "$topic" ] && topic="$name"
>> +
>> +
>> +
>> +# Evil obnoxious hack to work around the lack of git diff --exclude
>> +git diff --name-only $diff_opts "$base_rev" ${diff_committed_only:+"$name"} -- |
>> +     fgrep -vx ".topdeps" |
>> +     fgrep -vx ".topmsg" || : # fgrep likes to fail randomly?
> Instead of using fgrep you could export the branch and call git diff
> --name-only $diff_opts on the resulting commit?

If you mean using tg-export, than I think this is a bad idea. The
operation will than be O(n), with n the total number of depending
branches.

I think a pretty_tree on the base and the branch with git diff-tree
should suffice:

git diff-tree --name-only $(pretty_tree refs/top-bases/$name)
$(pretty_tree $name)

Bert

>
> Best regards
> Uwe
>
> --
> Pengutronix e.K.                           | Uwe Kleine-König            |
> Industrial Linux Solutions                 | http://www.pengutronix.de/  |
>