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![Elijah Newren](/assets/img/avatar_default.png)
Reported-by: Jens Schleusener <Jens.Schleusener@fossies.org> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
760 lines
22 KiB
Bash
Executable file
760 lines
22 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2007 Andy Parkins
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#
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# An example hook script to mail out commit update information.
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#
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# NOTE: This script is no longer under active development. There
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# is another script, git-multimail, which is more capable and
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# configurable and is largely backwards-compatible with this script;
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# please see "contrib/hooks/multimail/". For instructions on how to
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# migrate from post-receive-email to git-multimail, please see
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# "README.migrate-from-post-receive-email" in that directory.
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#
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# This hook sends emails listing new revisions to the repository
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# introduced by the change being reported. The rule is that (for
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# branch updates) each commit will appear on one email and one email
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# only.
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#
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# This hook is stored in the contrib/hooks directory. Your distribution
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# will have put this somewhere standard. You should make this script
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# executable then link to it in the repository you would like to use it in.
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# For example, on debian the hook is stored in
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# /usr/share/git-core/contrib/hooks/post-receive-email:
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#
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# cd /path/to/your/repository.git
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# ln -sf /usr/share/git-core/contrib/hooks/post-receive-email hooks/post-receive
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#
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# This hook script assumes it is enabled on the central repository of a
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# project, with all users pushing only to it and not between each other. It
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# will still work if you don't operate in that style, but it would become
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# possible for the email to be from someone other than the person doing the
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# push.
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#
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# To help with debugging and use on pre-v1.5.1 git servers, this script will
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# also obey the interface of hooks/update, taking its arguments on the
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# command line. Unfortunately, hooks/update is called once for each ref.
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# To avoid firing one email per ref, this script just prints its output to
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# the screen when used in this mode. The output can then be redirected if
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# wanted.
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#
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# Config
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# ------
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# hooks.mailinglist
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# This is the list that all pushes will go to; leave it blank to not send
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# emails for every ref update.
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# hooks.announcelist
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# This is the list that all pushes of annotated tags will go to. Leave it
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# blank to default to the mailinglist field. The announce emails lists
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# the short log summary of the changes since the last annotated tag.
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# hooks.envelopesender
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# If set then the -f option is passed to sendmail to allow the envelope
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# sender address to be set
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# hooks.emailprefix
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# All emails have their subjects prefixed with this prefix, or "[SCM]"
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# if emailprefix is unset, to aid filtering
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# hooks.showrev
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# The shell command used to format each revision in the email, with
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# "%s" replaced with the commit id. Defaults to "git rev-list -1
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# --pretty %s", displaying the commit id, author, date and log
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# message. To list full patches separated by a blank line, you
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# could set this to "git show -C %s; echo".
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# To list a gitweb/cgit URL *and* a full patch for each change set, use this:
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# "t=%s; printf 'http://.../?id=%%s' \$t; echo;echo; git show -C \$t; echo"
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# Be careful if "..." contains things that will be expanded by shell "eval"
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# or printf.
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# hooks.emailmaxlines
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# The maximum number of lines that should be included in the generated
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# email body. If not specified, there is no limit.
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# Lines beyond the limit are suppressed and counted, and a final
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# line is added indicating the number of suppressed lines.
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# hooks.diffopts
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# Alternate options for the git diff-tree invocation that shows changes.
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# Default is "--stat --summary --find-copies-harder". Add -p to those
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# options to include a unified diff of changes in addition to the usual
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# summary output.
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#
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# Notes
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# -----
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# All emails include the headers "X-Git-Refname", "X-Git-Oldrev",
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# "X-Git-Newrev", and "X-Git-Reftype" to enable fine tuned filtering and
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# give information for debugging.
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#
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# ---------------------------- Functions
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#
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# Function to prepare for email generation. This decides what type
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# of update this is and whether an email should even be generated.
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#
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prep_for_email()
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{
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# --- Arguments
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oldrev=$(git rev-parse $1)
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newrev=$(git rev-parse $2)
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refname="$3"
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# --- Interpret
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# 0000->1234 (create)
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# 1234->2345 (update)
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# 2345->0000 (delete)
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if expr "$oldrev" : '0*$' >/dev/null
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then
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change_type="create"
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else
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if expr "$newrev" : '0*$' >/dev/null
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then
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change_type="delete"
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else
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change_type="update"
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fi
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fi
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# --- Get the revision types
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newrev_type=$(git cat-file -t $newrev 2> /dev/null)
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oldrev_type=$(git cat-file -t "$oldrev" 2> /dev/null)
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case "$change_type" in
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create|update)
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rev="$newrev"
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rev_type="$newrev_type"
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;;
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delete)
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rev="$oldrev"
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rev_type="$oldrev_type"
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;;
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esac
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# The revision type tells us what type the commit is, combined with
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# the location of the ref we can decide between
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# - working branch
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# - tracking branch
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# - unannoted tag
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# - annotated tag
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case "$refname","$rev_type" in
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refs/tags/*,commit)
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# un-annotated tag
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refname_type="tag"
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short_refname=${refname##refs/tags/}
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;;
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refs/tags/*,tag)
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# annotated tag
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refname_type="annotated tag"
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short_refname=${refname##refs/tags/}
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# change recipients
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if [ -n "$announcerecipients" ]; then
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recipients="$announcerecipients"
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fi
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;;
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refs/heads/*,commit)
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# branch
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refname_type="branch"
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short_refname=${refname##refs/heads/}
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;;
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refs/remotes/*,commit)
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# tracking branch
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refname_type="tracking branch"
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short_refname=${refname##refs/remotes/}
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echo >&2 "*** Push-update of tracking branch, $refname"
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echo >&2 "*** - no email generated."
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return 1
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;;
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*)
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# Anything else (is there anything else?)
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echo >&2 "*** Unknown type of update to $refname ($rev_type)"
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echo >&2 "*** - no email generated"
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return 1
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;;
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esac
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# Check if we've got anyone to send to
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if [ -z "$recipients" ]; then
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case "$refname_type" in
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"annotated tag")
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config_name="hooks.announcelist"
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;;
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*)
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config_name="hooks.mailinglist"
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;;
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esac
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echo >&2 "*** $config_name is not set so no email will be sent"
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echo >&2 "*** for $refname update $oldrev->$newrev"
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return 1
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fi
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return 0
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}
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#
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# Top level email generation function. This calls the appropriate
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# body-generation routine after outputting the common header.
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#
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# Note this function doesn't actually generate any email output, that is
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# taken care of by the functions it calls:
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# - generate_email_header
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# - generate_create_XXXX_email
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# - generate_update_XXXX_email
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# - generate_delete_XXXX_email
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# - generate_email_footer
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#
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# Note also that this function cannot 'exit' from the script; when this
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# function is running (in hook script mode), the send_mail() function
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# is already executing in another process, connected via a pipe, and
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# if this function exits without, whatever has been generated to that
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# point will be sent as an email... even if nothing has been generated.
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#
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generate_email()
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{
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# Email parameters
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# The email subject will contain the best description of the ref
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# that we can build from the parameters
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describe=$(git describe $rev 2>/dev/null)
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if [ -z "$describe" ]; then
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describe=$rev
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fi
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generate_email_header
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# Call the correct body generation function
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fn_name=general
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case "$refname_type" in
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"tracking branch"|branch)
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fn_name=branch
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;;
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"annotated tag")
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fn_name=atag
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;;
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esac
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if [ -z "$maxlines" ]; then
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generate_${change_type}_${fn_name}_email
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else
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generate_${change_type}_${fn_name}_email | limit_lines $maxlines
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fi
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generate_email_footer
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}
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generate_email_header()
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{
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# --- Email (all stdout will be the email)
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# Generate header
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cat <<-EOF
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To: $recipients
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Subject: ${emailprefix}$projectdesc $refname_type $short_refname ${change_type}d. $describe
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MIME-Version: 1.0
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Content-Type: text/plain; charset=utf-8
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Content-Transfer-Encoding: 8bit
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X-Git-Refname: $refname
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X-Git-Reftype: $refname_type
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X-Git-Oldrev: $oldrev
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X-Git-Newrev: $newrev
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Auto-Submitted: auto-generated
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This is an automated email from the git hooks/post-receive script. It was
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generated because a ref change was pushed to the repository containing
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the project "$projectdesc".
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The $refname_type, $short_refname has been ${change_type}d
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EOF
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}
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generate_email_footer()
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{
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SPACE=" "
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cat <<-EOF
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hooks/post-receive
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--${SPACE}
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$projectdesc
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EOF
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}
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# --------------- Branches
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#
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# Called for the creation of a branch
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#
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generate_create_branch_email()
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{
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# This is a new branch and so oldrev is not valid
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echo " at $newrev ($newrev_type)"
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echo ""
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echo $LOGBEGIN
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show_new_revisions
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echo $LOGEND
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}
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#
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# Called for the change of a pre-existing branch
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#
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generate_update_branch_email()
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{
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# Consider this:
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# 1 --- 2 --- O --- X --- 3 --- 4 --- N
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#
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# O is $oldrev for $refname
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# N is $newrev for $refname
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# X is a revision pointed to by some other ref, for which we may
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# assume that an email has already been generated.
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# In this case we want to issue an email containing only revisions
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# 3, 4, and N. Given (almost) by
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#
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# git rev-list N ^O --not --all
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#
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# The reason for the "almost", is that the "--not --all" will take
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# precedence over the "N", and effectively will translate to
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#
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# git rev-list N ^O ^X ^N
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#
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# So, we need to build up the list more carefully. git rev-parse
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# will generate a list of revs that may be fed into git rev-list.
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# We can get it to make the "--not --all" part and then filter out
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# the "^N" with:
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#
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# git rev-parse --not --all | grep -v N
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#
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# Then, using the --stdin switch to git rev-list we have effectively
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# manufactured
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#
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# git rev-list N ^O ^X
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#
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# This leaves a problem when someone else updates the repository
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# while this script is running. Their new value of the ref we're
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# working on would be included in the "--not --all" output; and as
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# our $newrev would be an ancestor of that commit, it would exclude
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# all of our commits. What we really want is to exclude the current
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# value of $refname from the --not list, rather than N itself. So:
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#
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# git rev-parse --not --all | grep -v $(git rev-parse $refname)
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#
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# Gets us to something pretty safe (apart from the small time
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# between refname being read, and git rev-parse running - for that,
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# I give up)
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#
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#
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# Next problem, consider this:
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# * --- B --- * --- O ($oldrev)
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# \
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# * --- X --- * --- N ($newrev)
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#
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# That is to say, there is no guarantee that oldrev is a strict
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# subset of newrev (it would have required a --force, but that's
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# allowed). So, we can't simply say rev-list $oldrev..$newrev.
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# Instead we find the common base of the two revs and list from
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# there.
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#
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# As above, we need to take into account the presence of X; if
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# another branch is already in the repository and points at some of
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# the revisions that we are about to output - we don't want them.
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# The solution is as before: git rev-parse output filtered.
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#
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# Finally, tags: 1 --- 2 --- O --- T --- 3 --- 4 --- N
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#
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# Tags pushed into the repository generate nice shortlog emails that
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# summarise the commits between them and the previous tag. However,
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# those emails don't include the full commit messages that we output
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# for a branch update. Therefore we still want to output revisions
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# that have been output on a tag email.
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#
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# Luckily, git rev-parse includes just the tool. Instead of using
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# "--all" we use "--branches"; this has the added benefit that
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# "remotes/" will be ignored as well.
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# List all of the revisions that were removed by this update, in a
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# fast-forward update, this list will be empty, because rev-list O
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# ^N is empty. For a non-fast-forward, O ^N is the list of removed
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# revisions
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fast_forward=""
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rev=""
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for rev in $(git rev-list $newrev..$oldrev)
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do
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revtype=$(git cat-file -t "$rev")
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echo " discards $rev ($revtype)"
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done
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if [ -z "$rev" ]; then
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fast_forward=1
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fi
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# List all the revisions from baserev to newrev in a kind of
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# "table-of-contents"; note this list can include revisions that
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# have already had notification emails and is present to show the
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# full detail of the change from rolling back the old revision to
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# the base revision and then forward to the new revision
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for rev in $(git rev-list $oldrev..$newrev)
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do
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revtype=$(git cat-file -t "$rev")
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echo " via $rev ($revtype)"
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done
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if [ "$fast_forward" ]; then
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echo " from $oldrev ($oldrev_type)"
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else
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# 1. Existing revisions were removed. In this case newrev
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# is a subset of oldrev - this is the reverse of a
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# fast-forward, a rewind
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# 2. New revisions were added on top of an old revision,
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# this is a rewind and addition.
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# (1) certainly happened, (2) possibly. When (2) hasn't
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# happened, we set a flag to indicate that no log printout
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# is required.
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echo ""
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# Find the common ancestor of the old and new revisions and
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# compare it with newrev
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baserev=$(git merge-base $oldrev $newrev)
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rewind_only=""
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if [ "$baserev" = "$newrev" ]; then
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echo "This update discarded existing revisions and left the branch pointing at"
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echo "a previous point in the repository history."
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echo ""
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echo " * -- * -- N ($newrev)"
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echo " \\"
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echo " O -- O -- O ($oldrev)"
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echo ""
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echo "The removed revisions are not necessarily gone - if another reference"
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echo "still refers to them they will stay in the repository."
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rewind_only=1
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else
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echo "This update added new revisions after undoing existing revisions. That is"
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echo "to say, the old revision is not a strict subset of the new revision. This"
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echo "situation occurs when you --force push a change and generate a repository"
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echo "containing something like this:"
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echo ""
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echo " * -- * -- B -- O -- O -- O ($oldrev)"
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echo " \\"
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echo " N -- N -- N ($newrev)"
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echo ""
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echo "When this happens we assume that you've already had alert emails for all"
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echo "of the O revisions, and so we here report only the revisions in the N"
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echo "branch from the common base, B."
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fi
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fi
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echo ""
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if [ -z "$rewind_only" ]; then
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echo "Those revisions listed above that are new to this repository have"
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echo "not appeared on any other notification email; so we list those"
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echo "revisions in full, below."
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echo ""
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echo $LOGBEGIN
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show_new_revisions
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# XXX: Need a way of detecting whether git rev-list actually
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# outputted anything, so that we can issue a "no new
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# revisions added by this update" message
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echo $LOGEND
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else
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echo "No new revisions were added by this update."
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fi
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# The diffstat is shown from the old revision to the new revision.
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# This is to show the truth of what happened in this change.
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# There's no point showing the stat from the base to the new
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# revision because the base is effectively a random revision at this
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# point - the user will be interested in what this revision changed
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# - including the undoing of previous revisions in the case of
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# non-fast-forward updates.
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echo ""
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echo "Summary of changes:"
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git diff-tree $diffopts $oldrev..$newrev
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}
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#
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# Called for the deletion of a branch
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#
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generate_delete_branch_email()
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{
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echo " was $oldrev"
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echo ""
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echo $LOGBEGIN
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git diff-tree -s --always --encoding=UTF-8 --pretty=oneline $oldrev
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echo $LOGEND
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}
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# --------------- Annotated tags
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#
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# Called for the creation of an annotated tag
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#
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generate_create_atag_email()
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{
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echo " at $newrev ($newrev_type)"
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generate_atag_email
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}
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#
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# Called for the update of an annotated tag (this is probably a rare event
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# and may not even be allowed)
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#
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generate_update_atag_email()
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{
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echo " to $newrev ($newrev_type)"
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echo " from $oldrev (which is now obsolete)"
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generate_atag_email
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}
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#
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# Called when an annotated tag is created or changed
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#
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generate_atag_email()
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{
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# Use git for-each-ref to pull out the individual fields from the
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# tag
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eval $(git for-each-ref --shell --format='
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tagobject=%(*objectname)
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tagtype=%(*objecttype)
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tagger=%(taggername)
|
|
tagged=%(taggerdate)' $refname
|
|
)
|
|
|
|
echo " tagging $tagobject ($tagtype)"
|
|
case "$tagtype" in
|
|
commit)
|
|
|
|
# If the tagged object is a commit, then we assume this is a
|
|
# release, and so we calculate which tag this tag is
|
|
# replacing
|
|
prevtag=$(git describe --abbrev=0 $newrev^ 2>/dev/null)
|
|
|
|
if [ -n "$prevtag" ]; then
|
|
echo " replaces $prevtag"
|
|
fi
|
|
;;
|
|
*)
|
|
echo " length $(git cat-file -s $tagobject) bytes"
|
|
;;
|
|
esac
|
|
echo " tagged by $tagger"
|
|
echo " on $tagged"
|
|
|
|
echo ""
|
|
echo $LOGBEGIN
|
|
|
|
# Show the content of the tag message; this might contain a change
|
|
# log or release notes so is worth displaying.
|
|
git cat-file tag $newrev | sed -e '1,/^$/d'
|
|
|
|
echo ""
|
|
case "$tagtype" in
|
|
commit)
|
|
# Only commit tags make sense to have rev-list operations
|
|
# performed on them
|
|
if [ -n "$prevtag" ]; then
|
|
# Show changes since the previous release
|
|
git shortlog "$prevtag..$newrev"
|
|
else
|
|
# No previous tag, show all the changes since time
|
|
# began
|
|
git shortlog $newrev
|
|
fi
|
|
;;
|
|
*)
|
|
# XXX: Is there anything useful we can do for non-commit
|
|
# objects?
|
|
;;
|
|
esac
|
|
|
|
echo $LOGEND
|
|
}
|
|
|
|
#
|
|
# Called for the deletion of an annotated tag
|
|
#
|
|
generate_delete_atag_email()
|
|
{
|
|
echo " was $oldrev"
|
|
echo ""
|
|
echo $LOGBEGIN
|
|
git diff-tree -s --always --encoding=UTF-8 --pretty=oneline $oldrev
|
|
echo $LOGEND
|
|
}
|
|
|
|
# --------------- General references
|
|
|
|
#
|
|
# Called when any other type of reference is created (most likely a
|
|
# non-annotated tag)
|
|
#
|
|
generate_create_general_email()
|
|
{
|
|
echo " at $newrev ($newrev_type)"
|
|
|
|
generate_general_email
|
|
}
|
|
|
|
#
|
|
# Called when any other type of reference is updated (most likely a
|
|
# non-annotated tag)
|
|
#
|
|
generate_update_general_email()
|
|
{
|
|
echo " to $newrev ($newrev_type)"
|
|
echo " from $oldrev"
|
|
|
|
generate_general_email
|
|
}
|
|
|
|
#
|
|
# Called for creation or update of any other type of reference
|
|
#
|
|
generate_general_email()
|
|
{
|
|
# Unannotated tags are more about marking a point than releasing a
|
|
# version; therefore we don't do the shortlog summary that we do for
|
|
# annotated tags above - we simply show that the point has been
|
|
# marked, and print the log message for the marked point for
|
|
# reference purposes
|
|
#
|
|
# Note this section also catches any other reference type (although
|
|
# there aren't any) and deals with them in the same way.
|
|
|
|
echo ""
|
|
if [ "$newrev_type" = "commit" ]; then
|
|
echo $LOGBEGIN
|
|
git diff-tree -s --always --encoding=UTF-8 --pretty=medium $newrev
|
|
echo $LOGEND
|
|
else
|
|
# What can we do here? The tag marks an object that is not
|
|
# a commit, so there is no log for us to display. It's
|
|
# probably not wise to output git cat-file as it could be a
|
|
# binary blob. We'll just say how big it is
|
|
echo "$newrev is a $newrev_type, and is $(git cat-file -s $newrev) bytes long."
|
|
fi
|
|
}
|
|
|
|
#
|
|
# Called for the deletion of any other type of reference
|
|
#
|
|
generate_delete_general_email()
|
|
{
|
|
echo " was $oldrev"
|
|
echo ""
|
|
echo $LOGBEGIN
|
|
git diff-tree -s --always --encoding=UTF-8 --pretty=oneline $oldrev
|
|
echo $LOGEND
|
|
}
|
|
|
|
|
|
# --------------- Miscellaneous utilities
|
|
|
|
#
|
|
# Show new revisions as the user would like to see them in the email.
|
|
#
|
|
show_new_revisions()
|
|
{
|
|
# This shows all log entries that are not already covered by
|
|
# another ref - i.e. commits that are now accessible from this
|
|
# ref that were previously not accessible
|
|
# (see generate_update_branch_email for the explanation of this
|
|
# command)
|
|
|
|
# Revision range passed to rev-list differs for new vs. updated
|
|
# branches.
|
|
if [ "$change_type" = create ]
|
|
then
|
|
# Show all revisions exclusive to this (new) branch.
|
|
revspec=$newrev
|
|
else
|
|
# Branch update; show revisions not part of $oldrev.
|
|
revspec=$oldrev..$newrev
|
|
fi
|
|
|
|
other_branches=$(git for-each-ref --format='%(refname)' refs/heads/ |
|
|
grep -F -v $refname)
|
|
git rev-parse --not $other_branches |
|
|
if [ -z "$custom_showrev" ]
|
|
then
|
|
git rev-list --pretty --stdin $revspec
|
|
else
|
|
git rev-list --stdin $revspec |
|
|
while read onerev
|
|
do
|
|
eval $(printf "$custom_showrev" $onerev)
|
|
done
|
|
fi
|
|
}
|
|
|
|
|
|
limit_lines()
|
|
{
|
|
lines=0
|
|
skipped=0
|
|
while IFS="" read -r line; do
|
|
lines=$((lines + 1))
|
|
if [ $lines -gt $1 ]; then
|
|
skipped=$((skipped + 1))
|
|
else
|
|
printf "%s\n" "$line"
|
|
fi
|
|
done
|
|
if [ $skipped -ne 0 ]; then
|
|
echo "... $skipped lines suppressed ..."
|
|
fi
|
|
}
|
|
|
|
|
|
send_mail()
|
|
{
|
|
if [ -n "$envelopesender" ]; then
|
|
/usr/sbin/sendmail -t -f "$envelopesender"
|
|
else
|
|
/usr/sbin/sendmail -t
|
|
fi
|
|
}
|
|
|
|
# ---------------------------- main()
|
|
|
|
# --- Constants
|
|
LOGBEGIN="- Log -----------------------------------------------------------------"
|
|
LOGEND="-----------------------------------------------------------------------"
|
|
|
|
# --- Config
|
|
# Set GIT_DIR either from the working directory, or from the environment
|
|
# variable.
|
|
GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
|
|
if [ -z "$GIT_DIR" ]; then
|
|
echo >&2 "fatal: post-receive: GIT_DIR not set"
|
|
exit 1
|
|
fi
|
|
|
|
projectdesc=$(sed -ne '1p' "$GIT_DIR/description" 2>/dev/null)
|
|
# Check if the description is unchanged from it's default, and shorten it to
|
|
# a more manageable length if it is
|
|
if expr "$projectdesc" : "Unnamed repository.*$" >/dev/null
|
|
then
|
|
projectdesc="UNNAMED PROJECT"
|
|
fi
|
|
|
|
recipients=$(git config hooks.mailinglist)
|
|
announcerecipients=$(git config hooks.announcelist)
|
|
envelopesender=$(git config hooks.envelopesender)
|
|
emailprefix=$(git config hooks.emailprefix || echo '[SCM] ')
|
|
custom_showrev=$(git config hooks.showrev)
|
|
maxlines=$(git config hooks.emailmaxlines)
|
|
diffopts=$(git config hooks.diffopts)
|
|
: ${diffopts:="--stat --summary --find-copies-harder"}
|
|
|
|
# --- Main loop
|
|
# Allow dual mode: run from the command line just like the update hook, or
|
|
# if no arguments are given then run as a hook script
|
|
if [ -n "$1" -a -n "$2" -a -n "$3" ]; then
|
|
# Output to the terminal in command line mode - if someone wanted to
|
|
# resend an email; they could redirect the output to sendmail
|
|
# themselves
|
|
prep_for_email $2 $3 $1 && PAGER= generate_email
|
|
else
|
|
while read oldrev newrev refname
|
|
do
|
|
prep_for_email $oldrev $newrev $refname || continue
|
|
generate_email $maxlines | send_mail
|
|
done
|
|
fi
|