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tg-prev/tg-next: commands to explore dependencies

Two new commands to explore the dependencies of TopGit branches:

  a) tg prev [-i | -w] [NAME]
     outputs the dependencies of NAME

  b) tg next [-i | -w] [NAME]
     outputs branches which depends on NAME

Obviously, quilt next was the inspiration.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
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commit 52c8d3cd567f12930c1860298baa97a6312e9c56 1 parent f281705
@bertwesarg bertwesarg authored
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4 .gitignore
@@ -30,10 +30,14 @@
/tg-info.txt
/tg-mail
/tg-mail.txt
+/tg-next
+/tg-next.txt
/tg-log
/tg-log.txt
/tg-patch
/tg-patch.txt
+/tg-prev
+/tg-prev.txt
/tg-push
/tg-push.txt
/tg-remote
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18 README
@@ -539,8 +539,24 @@ tg log
Note: if you have merged changes from a different repository, this
command might not list all interesting commits.
-TODO: tg rename
+tg prev
+~~~~~~~
+ Outputs the direct dependencies for the current or named patch.
+ Options:
+ -i show dependencies based on index instead of branch
+ -w show dependencies based on working tree instead of branch
+
+tg next
+~~~~~~~
+ Outputs all patches which directly depend on the current or
+ named patch.
+
+ Options:
+ -i show dependencies based on index instead of branch
+ -w show dependencies based on working tree instead of branch
+
+TODO: tg rename
IMPLEMENTATION
--------------
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34 contrib/tg-completion.bash
@@ -453,6 +453,38 @@ _tg_update ()
esac
}
+_tg_next ()
+{
+ local cur="${COMP_WORDS[COMP_CWORD]}"
+
+ case "$cur" in
+ -*)
+ __tgcomp "
+ -i
+ -w
+ "
+ ;;
+ *)
+ __tgcomp "$(__tg_heads)"
+ esac
+}
+
+_tg_prev ()
+{
+ local cur="${COMP_WORDS[COMP_CWORD]}"
+
+ case "$cur" in
+ -*)
+ __tgcomp "
+ -i
+ -w
+ "
+ ;;
+ *)
+ __tgcomp "$(__tg_topics)"
+ esac
+}
+
### }}}
### {{{ tg completion
@@ -500,7 +532,9 @@ _tg ()
info) _tg_info ;;
log) _tg_log ;;
mail) _tg_mail ;;
+ next) _tg_next ;;
patch) _tg_patch ;;
+ prev) _tg_prev ;;
push) _tg_push ;;
remote) _tg_remote ;;
summary) _tg_summary ;;
View
45 tg-next.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+# TopGit - A different patch queue manager
+# (c) Petr Baudis <pasky@suse.cz> 2008
+# (c) Bert Wesarg <Bert.Wesarg@googlemail.com> 2009
+# GPLv2
+
+name=
+head_from=
+
+
+## Parse options
+
+while [ -n "$1" ]; do
+ arg="$1"; shift
+ case "$arg" in
+ -i|-w)
+ [ -z "$head_from" ] || die "-i and -w are mutually exclusive"
+ head_from="$arg";;
+ -*)
+ echo "Usage: tg next [-i | -w] [NAME]" >&2
+ exit 1;;
+ *)
+ [ -z "$name" ] || die "name already specified ($name)"
+ name="$arg";;
+ esac
+done
+
+head="$(git rev-parse --abbrev-ref=loose HEAD)"
+[ -n "$name" ] ||
+ name="$head"
+
+git for-each-ref --format='%(refname)' refs/top-bases |
+ while read ref; do
+ parent="${ref#refs/top-bases/}"
+
+ from=$head_from
+ # select .topdeps source for HEAD branch
+ [ "x$parent" = "x$head" ] ||
+ from=
+
+ cat_file "$parent:.topdeps" $from | fgrep -qx "$name" ||
+ continue
+
+ echo "$parent"
+ done
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38 tg-prev.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+# TopGit - A different patch queue manager
+# (c) Petr Baudis <pasky@suse.cz> 2008
+# (c) Bert Wesarg <Bert.Wesarg@googlemail.com> 2009
+# GPLv2
+
+name=
+head_from=
+
+
+## Parse options
+
+while [ -n "$1" ]; do
+ arg="$1"; shift
+ case "$arg" in
+ -i|-w)
+ [ -z "$head_from" ] || die "-i and -w are mutually exclusive"
+ head_from="$arg";;
+ -*)
+ echo "Usage: tg next [-i | -w] [NAME]" >&2
+ exit 1;;
+ *)
+ [ -z "$name" ] || die "name already specified ($name)"
+ name="$arg";;
+ esac
+done
+
+head="$(git rev-parse --abbrev-ref=loose HEAD)"
+[ -n "$name" ] ||
+ name="$head"
+base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
+ die "not a TopGit-controlled branch"
+
+# select .topdeps source for HEAD branch
+[ "x$name" = "x$head" ] ||
+ head_from=
+
+cat_file "$name:.topdeps" $head_from
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