Revision 251df09be3af658404f5f5f670a013d5806645d4 authored by Matthieu Moy on 09 March 2011, 20:52:15 UTC, committed by Junio C Hamano on 09 March 2011, 22:28:24 UTC
The --max-count limit is implemented by counting revisions in
get_revision(), but the -S and -G take effect later when running diff.
Hence "--max-count=10 -Sfoo" meant "examine the 10 first revisions, and
out of them, show only those changing the occurences of foo", not "show 10
revisions changing the occurences of foo".

In case the commit isn't actually shown, cancel the decrement of
max_count.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent d0f7dcb
Raw File
git-instaweb.sh
#!/bin/sh
#
# Copyright (c) 2006 Eric Wong
#

PERL='@@PERL@@'
OPTIONS_KEEPDASHDASH=
OPTIONS_SPEC="\
git instaweb [options] (--start | --stop | --restart)
--
l,local        only bind on 127.0.0.1
p,port=        the port to bind to
d,httpd=       the command to launch
b,browser=     the browser to launch
m,module-path= the module path (only needed for apache2)
 Action
stop           stop the web server
start          start the web server
restart        restart the web server
"

. git-sh-setup

fqgitdir="$GIT_DIR"
local="$(git config --bool --get instaweb.local)"
httpd="$(git config --get instaweb.httpd)"
root="$(git config --get instaweb.gitwebdir)"
port=$(git config --get instaweb.port)
module_path="$(git config --get instaweb.modulepath)"

conf="$GIT_DIR/gitweb/httpd.conf"

# Defaults:

# if installed, it doesn't need further configuration (module_path)
test -z "$httpd" && httpd='lighttpd -f'

# Default is @@GITWEBDIR@@
test -z "$root" && root='@@GITWEBDIR@@'

# any untaken local port will do...
test -z "$port" && port=1234

resolve_full_httpd () {
	case "$httpd" in
	*apache2*|*lighttpd*|*httpd*)
		# yes, *httpd* covers *lighttpd* above, but it is there for clarity
		# ensure that the apache2/lighttpd command ends with "-f"
		if ! echo "$httpd" | sane_grep -- '-f *$' >/dev/null 2>&1
		then
			httpd="$httpd -f"
		fi
		;;
	*plackup*)
		# server is started by running via generated gitweb.psgi in $fqgitdir/gitweb
		full_httpd="$fqgitdir/gitweb/gitweb.psgi"
		httpd_only="${httpd%% *}" # cut on first space
		return
		;;
	*webrick*)
		# server is started by running via generated webrick.rb in
		# $fqgitdir/gitweb
		full_httpd="$fqgitdir/gitweb/webrick.rb"
		httpd_only="${httpd%% *}" # cut on first space
		return
		;;
	esac

	httpd_only="$(echo $httpd | cut -f1 -d' ')"
	if case "$httpd_only" in /*) : ;; *) which $httpd_only >/dev/null 2>&1;; esac
	then
		full_httpd=$httpd
	else
		# many httpds are installed in /usr/sbin or /usr/local/sbin
		# these days and those are not in most users $PATHs
		# in addition, we may have generated a server script
		# in $fqgitdir/gitweb.
		for i in /usr/local/sbin /usr/sbin "$root" "$fqgitdir/gitweb"
		do
			if test -x "$i/$httpd_only"
			then
				full_httpd=$i/$httpd
				return
			fi
		done

		echo >&2 "$httpd_only not found. Install $httpd_only or use" \
		     "--httpd to specify another httpd daemon."
		exit 1
	fi
}

start_httpd () {
	if test -f "$fqgitdir/pid"; then
		say "Instance already running. Restarting..."
		stop_httpd
	fi

	# here $httpd should have a meaningful value
	resolve_full_httpd

	# don't quote $full_httpd, there can be arguments to it (-f)
	case "$httpd" in
	*mongoose*|*plackup*)
		#These servers don't have a daemon mode so we'll have to fork it
		$full_httpd "$fqgitdir/gitweb/httpd.conf" &
		#Save the pid before doing anything else (we'll print it later)
		pid=$!

		if test $? != 0; then
			echo "Could not execute http daemon $httpd."
			exit 1
		fi

		cat > "$fqgitdir/pid" <<EOF
$pid
EOF
		;;
	*)
		$full_httpd "$fqgitdir/gitweb/httpd.conf"
		if test $? != 0; then
			echo "Could not execute http daemon $httpd."
			exit 1
		fi
		;;
	esac
}

stop_httpd () {
	test -f "$fqgitdir/pid" && kill $(cat "$fqgitdir/pid")
	rm -f "$fqgitdir/pid"
}

httpd_is_ready () {
	"$PERL" -MIO::Socket::INET -e "
local \$| = 1; # turn on autoflush
exit if (IO::Socket::INET->new('127.0.0.1:$port'));
print 'Waiting for \'$httpd\' to start ..';
do {
	print '.';
	sleep(1);
} until (IO::Socket::INET->new('127.0.0.1:$port'));
print qq! (done)\n!;
"
}

while test $# != 0
do
	case "$1" in
	--stop|stop)
		stop_httpd
		exit 0
		;;
	--start|start)
		start_httpd
		exit 0
		;;
	--restart|restart)
		stop_httpd
		start_httpd
		exit 0
		;;
	-l|--local)
		local=true
		;;
	-d|--httpd)
		shift
		httpd="$1"
		;;
	-b|--browser)
		shift
		browser="$1"
		;;
	-p|--port)
		shift
		port="$1"
		;;
	-m|--module-path)
		shift
		module_path="$1"
		;;
	--)
		;;
	*)
		usage
		;;
	esac
	shift
done

mkdir -p "$GIT_DIR/gitweb/tmp"
GIT_EXEC_PATH="$(git --exec-path)"
GIT_DIR="$fqgitdir"
GITWEB_CONFIG="$fqgitdir/gitweb/gitweb_config.perl"
export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG

webrick_conf () {
	# webrick seems to have no way of passing arbitrary environment
	# variables to the underlying CGI executable, so we wrap the
	# actual gitweb.cgi using a shell script to force it
  wrapper="$fqgitdir/gitweb/$httpd/wrapper.sh"
	cat > "$wrapper" <<EOF
#!/bin/sh
# we use this shell script wrapper around the real gitweb.cgi since
# there appears to be no other way to pass arbitrary environment variables
# into the CGI process
GIT_EXEC_PATH=$GIT_EXEC_PATH GIT_DIR=$GIT_DIR GITWEB_CONFIG=$GITWEB_CONFIG
export GIT_EXEC_PATH GIT_DIR GITWEB_CONFIG
exec $root/gitweb.cgi
EOF
	chmod +x "$wrapper"

	# This assumes _ruby_ is in the user's $PATH. that's _one_
	# portable way to run ruby, which could be installed anywhere, really.
	# generate a standalone server script in $fqgitdir/gitweb.
	cat >"$fqgitdir/gitweb/$httpd.rb" <<EOF
#!/usr/bin/env ruby
require 'webrick'
require 'logger'
options = {
  :Port => $port,
  :DocumentRoot => "$root",
  :Logger => Logger.new('$fqgitdir/gitweb/error.log'),
  :AccessLog => [
    [ Logger.new('$fqgitdir/gitweb/access.log'),
      WEBrick::AccessLog::COMBINED_LOG_FORMAT ]
  ],
  :DirectoryIndex => ["gitweb.cgi"],
  :CGIInterpreter => "$wrapper",
  :StartCallback => lambda do
    File.open("$fqgitdir/pid", "w") { |f| f.puts Process.pid }
  end,
  :ServerType => WEBrick::Daemon,
}
options[:BindAddress] = '127.0.0.1' if "$local" == "true"
server = WEBrick::HTTPServer.new(options)
['INT', 'TERM'].each do |signal|
  trap(signal) {server.shutdown}
end
server.start
EOF
	chmod +x "$fqgitdir/gitweb/$httpd.rb"
	# configuration is embedded in server script file, webrick.rb
	rm -f "$conf"
}

lighttpd_conf () {
	cat > "$conf" <<EOF
server.document-root = "$root"
server.port = $port
server.modules = ( "mod_setenv", "mod_cgi" )
server.indexfiles = ( "gitweb.cgi" )
server.pid-file = "$fqgitdir/pid"
server.errorlog = "$fqgitdir/gitweb/$httpd_only/error.log"

# to enable, add "mod_access", "mod_accesslog" to server.modules
# variable above and uncomment this
#accesslog.filename = "$fqgitdir/gitweb/$httpd_only/access.log"

setenv.add-environment = ( "PATH" => env.PATH, "GITWEB_CONFIG" => env.GITWEB_CONFIG )

cgi.assign = ( ".cgi" => "" )

# mimetype mapping
mimetype.assign             = (
  ".pdf"          =>      "application/pdf",
  ".sig"          =>      "application/pgp-signature",
  ".spl"          =>      "application/futuresplash",
  ".class"        =>      "application/octet-stream",
  ".ps"           =>      "application/postscript",
  ".torrent"      =>      "application/x-bittorrent",
  ".dvi"          =>      "application/x-dvi",
  ".gz"           =>      "application/x-gzip",
  ".pac"          =>      "application/x-ns-proxy-autoconfig",
  ".swf"          =>      "application/x-shockwave-flash",
  ".tar.gz"       =>      "application/x-tgz",
  ".tgz"          =>      "application/x-tgz",
  ".tar"          =>      "application/x-tar",
  ".zip"          =>      "application/zip",
  ".mp3"          =>      "audio/mpeg",
  ".m3u"          =>      "audio/x-mpegurl",
  ".wma"          =>      "audio/x-ms-wma",
  ".wax"          =>      "audio/x-ms-wax",
  ".ogg"          =>      "application/ogg",
  ".wav"          =>      "audio/x-wav",
  ".gif"          =>      "image/gif",
  ".jpg"          =>      "image/jpeg",
  ".jpeg"         =>      "image/jpeg",
  ".png"          =>      "image/png",
  ".xbm"          =>      "image/x-xbitmap",
  ".xpm"          =>      "image/x-xpixmap",
  ".xwd"          =>      "image/x-xwindowdump",
  ".css"          =>      "text/css",
  ".html"         =>      "text/html",
  ".htm"          =>      "text/html",
  ".js"           =>      "text/javascript",
  ".asc"          =>      "text/plain",
  ".c"            =>      "text/plain",
  ".cpp"          =>      "text/plain",
  ".log"          =>      "text/plain",
  ".conf"         =>      "text/plain",
  ".text"         =>      "text/plain",
  ".txt"          =>      "text/plain",
  ".dtd"          =>      "text/xml",
  ".xml"          =>      "text/xml",
  ".mpeg"         =>      "video/mpeg",
  ".mpg"          =>      "video/mpeg",
  ".mov"          =>      "video/quicktime",
  ".qt"           =>      "video/quicktime",
  ".avi"          =>      "video/x-msvideo",
  ".asf"          =>      "video/x-ms-asf",
  ".asx"          =>      "video/x-ms-asf",
  ".wmv"          =>      "video/x-ms-wmv",
  ".bz2"          =>      "application/x-bzip",
  ".tbz"          =>      "application/x-bzip-compressed-tar",
  ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
  ""              =>      "text/plain"
 )
EOF
	test x"$local" = xtrue && echo 'server.bind = "127.0.0.1"' >> "$conf"
}

apache2_conf () {
	if test -z "$module_path"
	then
		test -d "/usr/lib/httpd/modules" &&
			module_path="/usr/lib/httpd/modules"
		test -d "/usr/lib/apache2/modules" &&
			module_path="/usr/lib/apache2/modules"
	fi
	bind=
	test x"$local" = xtrue && bind='127.0.0.1:'
	echo 'text/css css' > "$fqgitdir/mime.types"
	cat > "$conf" <<EOF
ServerName "git-instaweb"
ServerRoot "$root"
DocumentRoot "$root"
ErrorLog "$fqgitdir/gitweb/$httpd_only/error.log"
CustomLog "$fqgitdir/gitweb/$httpd_only/access.log" combined
PidFile "$fqgitdir/pid"
Listen $bind$port
EOF

	for mod in mime dir env log_config
	do
		if test -e $module_path/mod_${mod}.so
		then
			echo "LoadModule ${mod}_module " \
			     "$module_path/mod_${mod}.so" >> "$conf"
		fi
	done
	cat >> "$conf" <<EOF
TypesConfig "$fqgitdir/mime.types"
DirectoryIndex gitweb.cgi
EOF

	# check to see if Dennis Stosberg's mod_perl compatibility patch
	# (<20060621130708.Gcbc6e5c@leonov.stosberg.net>) has been applied
	if test -f "$module_path/mod_perl.so" &&
	   sane_grep 'MOD_PERL' "$root/gitweb.cgi" >/dev/null
	then
		# favor mod_perl if available
		cat >> "$conf" <<EOF
LoadModule perl_module $module_path/mod_perl.so
PerlPassEnv GIT_DIR
PerlPassEnv GIT_EXEC_PATH
PerlPassEnv GITWEB_CONFIG
<Location /gitweb.cgi>
	SetHandler perl-script
	PerlResponseHandler ModPerl::Registry
	PerlOptions +ParseHeaders
	Options +ExecCGI
</Location>
EOF
	else
		# plain-old CGI
		resolve_full_httpd
		list_mods=$(echo "$full_httpd" | sed 's/-f$/-l/')
		$list_mods | sane_grep 'mod_cgi\.c' >/dev/null 2>&1 || \
		if test -f "$module_path/mod_cgi.so"
		then
			echo "LoadModule cgi_module $module_path/mod_cgi.so" >> "$conf"
		else
			$list_mods | grep 'mod_cgid\.c' >/dev/null 2>&1 || \
			if test -f "$module_path/mod_cgid.so"
			then
				echo "LoadModule cgid_module $module_path/mod_cgid.so" \
					>> "$conf"
			else
				echo "You have no CGI support!"
				exit 2
			fi
			echo "ScriptSock logs/gitweb.sock" >> "$conf"
		fi
		cat >> "$conf" <<EOF
PassEnv GIT_DIR
PassEnv GIT_EXEC_PATH
PassEnv GITWEB_CONFIG
AddHandler cgi-script .cgi
<Location /gitweb.cgi>
	Options +ExecCGI
</Location>
EOF
	fi
}

mongoose_conf() {
	cat > "$conf" <<EOF
# Mongoose web server configuration file.
# Lines starting with '#' and empty lines are ignored.
# For detailed description of every option, visit
# http://code.google.com/p/mongoose/wiki/MongooseManual

root		$root
ports		$port
index_files	gitweb.cgi
#ssl_cert	$fqgitdir/gitweb/ssl_cert.pem
error_log	$fqgitdir/gitweb/$httpd_only/error.log
access_log	$fqgitdir/gitweb/$httpd_only/access.log

#cgi setup
cgi_env		PATH=$PATH,GIT_DIR=$GIT_DIR,GIT_EXEC_PATH=$GIT_EXEC_PATH,GITWEB_CONFIG=$GITWEB_CONFIG
cgi_interp	$PERL
cgi_ext		cgi,pl

# mimetype mapping
mime_types	.gz=application/x-gzip,.tar.gz=application/x-tgz,.tgz=application/x-tgz,.tar=application/x-tar,.zip=application/zip,.gif=image/gif,.jpg=image/jpeg,.jpeg=image/jpeg,.png=image/png,.css=text/css,.html=text/html,.htm=text/html,.js=text/javascript,.c=text/plain,.cpp=text/plain,.log=text/plain,.conf=text/plain,.text=text/plain,.txt=text/plain,.dtd=text/xml,.bz2=application/x-bzip,.tbz=application/x-bzip-compressed-tar,.tar.bz2=application/x-bzip-compressed-tar
EOF
}

plackup_conf () {
	# generate a standalone 'plackup' server script in $fqgitdir/gitweb
	# with embedded configuration; it does not use "$conf" file
	cat > "$fqgitdir/gitweb/gitweb.psgi" <<EOF
#!$PERL

# gitweb - simple web interface to track changes in git repositories
#          PSGI wrapper and server starter (see http://plackperl.org)

use strict;

use IO::Handle;
use Plack::MIME;
use Plack::Builder;
use Plack::App::WrapCGI;
use CGI::Emulate::PSGI 0.07; # minimum version required to work with gitweb

# mimetype mapping (from lighttpd_conf)
Plack::MIME->add_type(
	".pdf"          =>      "application/pdf",
	".sig"          =>      "application/pgp-signature",
	".spl"          =>      "application/futuresplash",
	".class"        =>      "application/octet-stream",
	".ps"           =>      "application/postscript",
	".torrent"      =>      "application/x-bittorrent",
	".dvi"          =>      "application/x-dvi",
	".gz"           =>      "application/x-gzip",
	".pac"          =>      "application/x-ns-proxy-autoconfig",
	".swf"          =>      "application/x-shockwave-flash",
	".tar.gz"       =>      "application/x-tgz",
	".tgz"          =>      "application/x-tgz",
	".tar"          =>      "application/x-tar",
	".zip"          =>      "application/zip",
	".mp3"          =>      "audio/mpeg",
	".m3u"          =>      "audio/x-mpegurl",
	".wma"          =>      "audio/x-ms-wma",
	".wax"          =>      "audio/x-ms-wax",
	".ogg"          =>      "application/ogg",
	".wav"          =>      "audio/x-wav",
	".gif"          =>      "image/gif",
	".jpg"          =>      "image/jpeg",
	".jpeg"         =>      "image/jpeg",
	".png"          =>      "image/png",
	".xbm"          =>      "image/x-xbitmap",
	".xpm"          =>      "image/x-xpixmap",
	".xwd"          =>      "image/x-xwindowdump",
	".css"          =>      "text/css",
	".html"         =>      "text/html",
	".htm"          =>      "text/html",
	".js"           =>      "text/javascript",
	".asc"          =>      "text/plain",
	".c"            =>      "text/plain",
	".cpp"          =>      "text/plain",
	".log"          =>      "text/plain",
	".conf"         =>      "text/plain",
	".text"         =>      "text/plain",
	".txt"          =>      "text/plain",
	".dtd"          =>      "text/xml",
	".xml"          =>      "text/xml",
	".mpeg"         =>      "video/mpeg",
	".mpg"          =>      "video/mpeg",
	".mov"          =>      "video/quicktime",
	".qt"           =>      "video/quicktime",
	".avi"          =>      "video/x-msvideo",
	".asf"          =>      "video/x-ms-asf",
	".asx"          =>      "video/x-ms-asf",
	".wmv"          =>      "video/x-ms-wmv",
	".bz2"          =>      "application/x-bzip",
	".tbz"          =>      "application/x-bzip-compressed-tar",
	".tar.bz2"      =>      "application/x-bzip-compressed-tar",
	""              =>      "text/plain"
);

my \$app = builder {
	# to be able to override \$SIG{__WARN__} to log build time warnings
	use CGI::Carp; # it sets \$SIG{__WARN__} itself

	my \$logdir = "$fqgitdir/gitweb/$httpd_only";
	open my \$access_log_fh, '>>', "\$logdir/access.log"
		or die "Couldn't open access log '\$logdir/access.log': \$!";
	open my \$error_log_fh,  '>>', "\$logdir/error.log"
		or die "Couldn't open error log '\$logdir/error.log': \$!";

	\$access_log_fh->autoflush(1);
	\$error_log_fh->autoflush(1);

	# redirect build time warnings to error.log
	\$SIG{'__WARN__'} = sub {
		my \$msg = shift;
		# timestamp warning like in CGI::Carp::warn
		my \$stamp = CGI::Carp::stamp();
		\$msg =~ s/^/\$stamp/gm;
		print \$error_log_fh \$msg;
	};

	# write errors to error.log, access to access.log
	enable 'AccessLog',
		format => "combined",
		logger => sub { print \$access_log_fh @_; };
	enable sub {
		my \$app = shift;
		sub {
			my \$env = shift;
			\$env->{'psgi.errors'} = \$error_log_fh;
			\$app->(\$env);
		}
	};
	# gitweb currently doesn't work with $SIG{CHLD} set to 'IGNORE',
	# because it uses 'close $fd or die...' on piped filehandle $fh
	# (which causes the parent process to wait for child to finish).
	enable_if { \$SIG{'CHLD'} eq 'IGNORE' } sub {
		my \$app = shift;
		sub {
			my \$env = shift;
			local \$SIG{'CHLD'} = 'DEFAULT';
			local \$SIG{'CLD'}  = 'DEFAULT';
			\$app->(\$env);
		}
	};
	# serve static files, i.e. stylesheet, images, script
	enable 'Static',
		path => sub { m!\.(js|css|png)\$! && s!^/gitweb/!! },
		root => "$root/",
		encoding => 'utf-8'; # encoding for 'text/plain' files
	# convert CGI application to PSGI app
	Plack::App::WrapCGI->new(script => "$root/gitweb.cgi")->to_app;
};

# make it runnable as standalone app,
# like it would be run via 'plackup' utility
if (__FILE__ eq \$0) {
	require Plack::Runner;

	my \$runner = Plack::Runner->new();
	\$runner->parse_options(qw(--env deployment --port $port),
			       "$local" ? qw(--host 127.0.0.1) : ());
	\$runner->run(\$app);
}
__END__
EOF

	chmod a+x "$fqgitdir/gitweb/gitweb.psgi"
	# configuration is embedded in server script file, gitweb.psgi
	rm -f "$conf"
}

gitweb_conf() {
	cat > "$fqgitdir/gitweb/gitweb_config.perl" <<EOF
#!/usr/bin/perl
our \$projectroot = "$(dirname "$fqgitdir")";
our \$git_temp = "$fqgitdir/gitweb/tmp";
our \$projects_list = \$projectroot;

\$feature{'remote_heads'}{'default'} = [1];
EOF
}

gitweb_conf

resolve_full_httpd
mkdir -p "$fqgitdir/gitweb/$httpd_only"

case "$httpd" in
*lighttpd*)
	lighttpd_conf
	;;
*apache2*|*httpd*)
	apache2_conf
	;;
webrick)
	webrick_conf
	;;
*mongoose*)
	mongoose_conf
	;;
*plackup*)
	plackup_conf
	;;
*)
	echo "Unknown httpd specified: $httpd"
	exit 1
	;;
esac

start_httpd
url=http://127.0.0.1:$port

if test -n "$browser"; then
	httpd_is_ready && git web--browse -b "$browser" $url || echo $url
else
	httpd_is_ready && git web--browse -c "instaweb.browser" $url || echo $url
fi
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