# [PATCH] tg-push: Filter out plain SHA1s from being pushed.

3 messages from 2010-02-27 to 2010-02-28. Participants: Thomas Schwinge, Uwe Kleine-König.
Thread: https://gitlist.dev/t/22850

## Thomas Schwinge, 2010-02-27 22:09

Subject: [PATCH] tg-push: Filter out plain SHA1s from being pushed.
Message-ID: <1267308548-10136-1-git-send-email-thomas@schwinge.name>
URL: https://gitlist.dev/e/1267308548-10136-1-git-send-email-thomas%40schwinge.name

```
Otherwise, problems arise when branches depend (via .topdeps) on SHA1s:

    $ tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
    fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
    fatal: The remote end hung up unexpectedly
---

Hello!

I was facing the following problem:

    thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ bash -v -x /usr/bin/tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
    [...]
    ++ read _dep
    ++ missing_deps=
    ++ rm /tmp/tg-depsfile.nCfywI
    ++ return 0
    ++ xargs git push tmp
    ++ sort -u /tmp/tg-push-listfile.sZeHIr
    fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
    fatal: The remote end hung up unexpectedly
    rm -f "/tmp/tg-push-listfile.sZeHIr"
    + rm -f /tmp/tg-push-listfile.sZeHIr

That's the actual problem:

    thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ git push tmp 77c84aeb81808c3109665949448dba59965c391e
    fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
    fatal: The remote end hung up unexpectedly

... which is due to:

    $ git show t/____longjmp_chk_cleanup_linux_x86_64:.topdeps
    77c84aeb81808c3109665949448dba59965c391e

All other parts (at least those I tested / got to use so far) work just
fine when passing SHA1s.

Here is a patch to make this work for tg push, too.

    thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
    Counting objects: 196207, done.
    Compressing objects: 100% (32953/32953), done.
    Writing objects: 100% (196207/196207), 66.45 MiB | 4047 KiB/s, done.
    Total 196207 (delta 163379), reused 191592 (delta 159243)
    To /media/Stalin/tmp/glibc
     * [new branch]      t/____longjmp_chk_cleanup_linux_x86_64 -> t/____longjmp_chk_cleanup_linux_x86_64
     * [new branch]      refs/top-bases/t/____longjmp_chk_cleanup_linux_x86_64 -> refs/top-bases/t/____longjmp_chk_cleanup_linux_x86_64


 tg-push.sh |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/tg-push.sh b/tg-push.sh
index cd208a0..28cad81 100644
--- a/tg-push.sh
+++ b/tg-push.sh
@@ -71,6 +71,9 @@ for name in $branches; do
 	$recurse_deps && [ -n "$_dep_is_tgish" ] &&
 		no_remotes=1 recurse_deps push_branch "$name"
 
+	# filter out plain SHA1s
 	# remove multiple occurrences of the same branch
-	sort -u "$_listfile" | xargs git push $dry_run "$remote"
+	grep -vE '^[0-9a-f]{40}$' < "$_listfile" \
+		| sort -u \
+			| xargs git push $dry_run "$remote"
 done
-- 
1.6.0.4

```

## Uwe Kleine-König, 2010-02-28 10:18

Subject: Re: [PATCH] tg-push: Filter out plain SHA1s from being pushed.
Message-ID: <20100228101807.GB13987@pengutronix.de>
URL: https://gitlist.dev/e/20100228101807.GB13987%40pengutronix.de
In-Reply-To: <1267308548-10136-1-git-send-email-thomas@schwinge.name>

```
Hello,

On Sat, Feb 27, 2010 at 11:09:08PM +0100, Thomas Schwinge wrote:
> Otherwise, problems arise when branches depend (via .topdeps) on SHA1s:
> 
>     $ tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
>     fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
>     fatal: The remote end hung up unexpectedly
> ---
> 
> Hello!
> 
> I was facing the following problem:
> 
>     thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ bash -v -x /usr/bin/tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
>     [...]
>     ++ read _dep
>     ++ missing_deps=
>     ++ rm /tmp/tg-depsfile.nCfywI
>     ++ return 0
>     ++ xargs git push tmp
>     ++ sort -u /tmp/tg-push-listfile.sZeHIr
>     fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
>     fatal: The remote end hung up unexpectedly
>     rm -f "/tmp/tg-push-listfile.sZeHIr"
>     + rm -f /tmp/tg-push-listfile.sZeHIr
> 
> That's the actual problem:
> 
>     thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ git push tmp 77c84aeb81808c3109665949448dba59965c391e
>     fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
>     fatal: The remote end hung up unexpectedly
> 
> ... which is due to:
> 
>     $ git show t/____longjmp_chk_cleanup_linux_x86_64:.topdeps
>     77c84aeb81808c3109665949448dba59965c391e
> 
> All other parts (at least those I tested / got to use so far) work just
> fine when passing SHA1s.
> 
> Here is a patch to make this work for tg push, too.
> 
>     thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
>     Counting objects: 196207, done.
>     Compressing objects: 100% (32953/32953), done.
>     Writing objects: 100% (196207/196207), 66.45 MiB | 4047 KiB/s, done.
>     Total 196207 (delta 163379), reused 191592 (delta 159243)
>     To /media/Stalin/tmp/glibc
>      * [new branch]      t/____longjmp_chk_cleanup_linux_x86_64 -> t/____longjmp_chk_cleanup_linux_x86_64
>      * [new branch]      refs/top-bases/t/____longjmp_chk_cleanup_linux_x86_64 -> refs/top-bases/t/____longjmp_chk_cleanup_linux_x86_64
> 
> 
>  tg-push.sh |    5 ++++-
>  1 files changed, 4 insertions(+), 1 deletions(-)
> 
> diff --git a/tg-push.sh b/tg-push.sh
> index cd208a0..28cad81 100644
> --- a/tg-push.sh
> +++ b/tg-push.sh
> @@ -71,6 +71,9 @@ for name in $branches; do
>  	$recurse_deps && [ -n "$_dep_is_tgish" ] &&
>  		no_remotes=1 recurse_deps push_branch "$name"
>  
> +	# filter out plain SHA1s
>  	# remove multiple occurrences of the same branch
> -	sort -u "$_listfile" | xargs git push $dry_run "$remote"
> +	grep -vE '^[0-9a-f]{40}$' < "$_listfile" \
> +		| sort -u \
> +			| xargs git push $dry_run "$remote"
>  done
probably this is good enough.  Still I wonder if there is a better way
to detect if a given rev is a sha1 or a branch.

test "$(git rev-parse "$rev")" = "$rev"

comes to mind.  Anybody who gives names to branches that match
^[0-9a-f]{40}$ has other problems probably.

I think I will take it anyhow (and fix up the broken indention).

Best regards
Uwe

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

```

## Thomas Schwinge, 2010-02-28 13:57

Subject: [PATCH] tg-push: Filter out plain SHA1s from being pushed.
Message-ID: <1267365461-29801-1-git-send-email-thomas@schwinge.name>
URL: https://gitlist.dev/e/1267365461-29801-1-git-send-email-thomas%40schwinge.name
In-Reply-To: <20100228101807.GB13987@pengutronix.de>

```
Otherwise, problems arise when branches depend (via .topdeps) on SHA1s:

    $ tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
    fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
    fatal: The remote end hung up unexpectedly

Signed-off-by: Thomas Schwinge <thomas@schwinge.name>

---

Hello!

I was facing the following problem:

    thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ bash -v -x /usr/bin/tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
    [...]
    ++ read _dep
    ++ missing_deps=
    ++ rm /tmp/tg-depsfile.nCfywI
    ++ return 0
    ++ xargs git push tmp
    ++ sort -u /tmp/tg-push-listfile.sZeHIr
    fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
    fatal: The remote end hung up unexpectedly
    rm -f "/tmp/tg-push-listfile.sZeHIr"
    + rm -f /tmp/tg-push-listfile.sZeHIr

That's the actual problem:

    thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ git push tmp 77c84aeb81808c3109665949448dba59965c391e
    fatal: 77c84aeb81808c3109665949448dba59965c391e cannot be resolved to branch.
    fatal: The remote end hung up unexpectedly

... which is due to:

    $ git show t/____longjmp_chk_cleanup_linux_x86_64:.topdeps
    77c84aeb81808c3109665949448dba59965c391e

All other parts (at least those I tested / got to use so far) work just
fine when passing SHA1s.

Here is a patch to make this work for tg push, too.

    thomas@dirichlet:~/tmp/source/glibc/git/glibc.hurd $ tg push -r tmp t/____longjmp_chk_cleanup_linux_x86_64
    Counting objects: 196207, done.
    Compressing objects: 100% (32953/32953), done.
    Writing objects: 100% (196207/196207), 66.45 MiB | 4047 KiB/s, done.
    Total 196207 (delta 163379), reused 191592 (delta 159243)
    To /media/Stalin/tmp/glibc
     * [new branch]      t/____longjmp_chk_cleanup_linux_x86_64 -> t/____longjmp_chk_cleanup_linux_x86_64
     * [new branch]      refs/top-bases/t/____longjmp_chk_cleanup_linux_x86_64 -> refs/top-bases/t/____longjmp_chk_cleanup_linux_x86_64

 tg-push.sh |    3 +++
 tg.sh      |    7 +++++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/tg-push.sh b/tg-push.sh
index cd208a0..089f885 100644
--- a/tg-push.sh
+++ b/tg-push.sh
@@ -53,6 +53,9 @@ push_branch()
 	# if so desired omit non tgish deps
 	$tgish_deps_only && [ -z "$_dep_is_tgish" ] && return 0
 
+	# filter out plain SHA1s
+	is_sha1 "$_dep" && return 0
+
 	echo "$_dep" >> "$_listfile"
 	[ -z "$_dep_is_tgish" ] ||
 		echo "top-bases/$_dep" >> "$_listfile"
diff --git a/tg.sh b/tg.sh
index 1f6d3da..91c374a 100644
--- a/tg.sh
+++ b/tg.sh
@@ -126,6 +126,13 @@ branch_annihilated()
 	test "$(git rev-parse "$mb^{tree}")" = "$(git rev-parse "$_name^{tree}")";
 }
 
+# is_sha1 REF
+# Whether REF is a SHA1 (compared to a symbolic name).
+is_sha1()
+{
+	[ "$(git rev-parse "$1")" = "$1" ]
+}
+
 # recurse_deps CMD NAME [BRANCHPATH...]
 # Recursively eval CMD on all dependencies of NAME.
 # CMD can refer to $_name for queried branch name,
-- 
tg: (341a371..) t/tg_push_no_SHA1 (depends on: master)

```