git

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# git-gui Git repository chooser
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# Copyright (C) 2007 Shawn Pearce
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class choose_repository {
5

6
field top
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field w
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field w_body      ; # Widget holding the center content
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field w_next      ; # Next button
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field w_quit      ; # Quit button
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field o_cons      ; # Console object (if active)
12

13
# Status mega-widget instance during _do_clone2 (used by _copy_files and
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# _link_files). Widget is destroyed before _do_clone2 calls
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# _do_clone_checkout
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field o_status
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# Operation displayed by status mega-widget during _do_clone_checkout =>
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# _readtree_wait => _postcheckout_wait => _do_clone_submodules =>
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# _do_validate_submodule_cloning. The status mega-widget is a different
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# instance than that stored in $o_status in earlier operations.
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field o_status_op
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field w_types     ; # List of type buttons in clone
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field w_recentlist ; # Listbox containing recent repositories
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field w_localpath  ; # Entry widget bound to local_path
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field done              0 ; # Finished picking the repository?
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field local_path       {} ; # Where this repository is locally
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field origin_url       {} ; # Where we are cloning from
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field origin_name  origin ; # What we shall call 'origin'
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field clone_type hardlink ; # Type of clone to construct
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field recursive      true ; # Recursive cloning flag
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field readtree_err        ; # Error output from read-tree (if any)
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field sorted_recent       ; # recent repositories (sorted)
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constructor pick {} {
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	global M1T M1B use_ttk NS
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40
	if {[set maxrecent [get_config gui.maxrecentrepo]] eq {}} {
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		set maxrecent 10
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	}
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	make_dialog top w
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	wm title $top [mc "Git Gui"]
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47
	if {$top eq {.}} {
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		menu $w.mbar -tearoff 0
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		$top configure -menu $w.mbar
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		set m_repo $w.mbar.repository
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		$w.mbar add cascade \
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			-label [mc Repository] \
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			-menu $m_repo
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		menu $m_repo
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57
		if {[is_MacOSX]} {
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			$w.mbar add cascade -label Apple -menu .mbar.apple
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			menu $w.mbar.apple
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			$w.mbar.apple add command \
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				-label [mc "About %s" [appname]] \
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				-command do_about
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			$w.mbar.apple add command \
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				-label [mc "Show SSH Key"] \
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				-command do_ssh_key
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		} else {
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			$w.mbar add cascade -label [mc Help] -menu $w.mbar.help
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			menu $w.mbar.help
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			$w.mbar.help add command \
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				-label [mc "About %s" [appname]] \
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				-command do_about
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			$w.mbar.help add command \
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				-label [mc "Show SSH Key"] \
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				-command do_ssh_key
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		}
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77
		wm protocol $top WM_DELETE_WINDOW exit
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		bind $top <$M1B-q> exit
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		bind $top <$M1B-Q> exit
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		bind $top <Key-Escape> exit
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	} else {
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		wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
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		bind $top <Key-Escape> [list destroy $top]
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		set m_repo {}
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	}
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87
	pack [git_logo $w.git_logo] -side left -fill y -padx 10 -pady 10
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89
	set w_body $w.body
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	set opts $w_body.options
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	${NS}::frame $w_body
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	text $opts \
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		-cursor $::cursor_ptr \
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		-relief flat \
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		-background [get_bg_color $w_body] \
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		-wrap none \
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		-spacing1 5 \
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		-width 50 \
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		-height 3
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	pack $opts -anchor w -fill x
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102
	$opts tag conf link_new -foreground blue -underline 1
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	$opts tag bind link_new <1> [cb _next new]
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	$opts insert end [mc "Create New Repository"] link_new
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	$opts insert end "\n"
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	if {$m_repo ne {}} {
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		$m_repo add command \
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			-command [cb _next new] \
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			-accelerator $M1T-N \
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			-label [mc "New..."]
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		bind $top <$M1B-n> [cb _next new]
112
		bind $top <$M1B-N> [cb _next new]
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	}
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115
	$opts tag conf link_clone -foreground blue -underline 1
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	$opts tag bind link_clone <1> [cb _next clone]
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	$opts insert end [mc "Clone Existing Repository"] link_clone
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	$opts insert end "\n"
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	if {$m_repo ne {}} {
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		if {[tk windowingsystem] eq "win32"} {
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			set key L
122
		} else {
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			set key C
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		}
125
		$m_repo add command \
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			-command [cb _next clone] \
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			-accelerator $M1T-$key \
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			-label [mc "Clone..."]
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		bind $top <$M1B-[string tolower $key]> [cb _next clone]
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		bind $top <$M1B-[string toupper $key]> [cb _next clone]
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	}
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133
	$opts tag conf link_open -foreground blue -underline 1
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	$opts tag bind link_open <1> [cb _next open]
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	$opts insert end [mc "Open Existing Repository"] link_open
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	$opts insert end "\n"
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	if {$m_repo ne {}} {
138
		$m_repo add command \
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			-command [cb _next open] \
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			-accelerator $M1T-O \
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			-label [mc "Open..."]
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		bind $top <$M1B-o> [cb _next open]
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		bind $top <$M1B-O> [cb _next open]
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	}
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146
	$opts conf -state disabled
147

148
	set sorted_recent [_get_recentrepos]
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	if {[llength $sorted_recent] > 0} {
150
		if {$m_repo ne {}} {
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			$m_repo add separator
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			$m_repo add command \
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				-state disabled \
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				-label [mc "Recent Repositories"]
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		}
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157
	if {[set lenrecent [llength $sorted_recent]] < $maxrecent} {
158
		set lenrecent $maxrecent
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	}
160

161
		${NS}::label $w_body.space
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		${NS}::label $w_body.recentlabel \
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			-anchor w \
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			-text [mc "Open Recent Repository:"]
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		set w_recentlist $w_body.recentlist
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		text $w_recentlist \
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			-cursor $::cursor_ptr \
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			-relief flat \
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			-background [get_bg_color $w_body.recentlabel] \
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			-wrap none \
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			-width 50 \
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			-height $lenrecent
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		$w_recentlist tag conf link \
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			-foreground blue \
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			-underline 1
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		set home $::env(HOME)
177
		set home "[file normalize $home]/"
178
		set hlen [string length $home]
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		foreach p $sorted_recent {
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			set path $p
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			if {[string equal -length $hlen $home $p]} {
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				set p "~/[string range $p $hlen end]"
183
			}
184
			regsub -all "\n" $p "\\n" p
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			$w_recentlist insert end $p link
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			$w_recentlist insert end "\n"
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188
			if {$m_repo ne {}} {
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				$m_repo add command \
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					-command [cb _open_recent_path $path] \
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					-label "    $p"
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			}
193
		}
194
		$w_recentlist conf -state disabled
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		$w_recentlist tag bind link <1> [cb _open_recent %x,%y]
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		pack $w_body.space -anchor w -fill x
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		pack $w_body.recentlabel -anchor w -fill x
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		pack $w_recentlist -anchor w -fill x
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	}
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	pack $w_body -fill x -padx 10 -pady 10
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202
	${NS}::frame $w.buttons
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	set w_next $w.buttons.next
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	set w_quit $w.buttons.quit
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	${NS}::button $w_quit \
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		-text [mc "Quit"] \
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		-command exit
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	pack $w_quit -side right -padx 5
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	pack $w.buttons -side bottom -fill x -padx 10 -pady 10
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211
	if {$m_repo ne {}} {
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		$m_repo add separator
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		$m_repo add command \
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			-label [mc Quit] \
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			-command exit \
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			-accelerator $M1T-Q
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	}
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219
	bind $top <Return> [cb _invoke_next]
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	bind $top <Visibility> "
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		[cb _center]
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		grab $top
223
		focus $top
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		bind $top <Visibility> {}
225
	"
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	wm deiconify $top
227
	tkwait variable @done
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229
	grab release $top
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	if {$top eq {.}} {
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		eval destroy [winfo children $top]
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	}
233
}
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235
method _center {} {
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	set nx [winfo reqwidth $top]
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	set ny [winfo reqheight $top]
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	set rx [expr {([winfo screenwidth  $top] - $nx) / 3}]
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	set ry [expr {([winfo screenheight $top] - $ny) / 3}]
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	wm geometry $top [format {+%d+%d} $rx $ry]
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}
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243
method _invoke_next {} {
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	if {[winfo exists $w_next]} {
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		uplevel #0 [$w_next cget -command]
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	}
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}
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249
proc _get_recentrepos {} {
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	set recent [list]
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	foreach p [lsort -unique [get_config gui.recentrepo]] {
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		if {[_is_git [file join $p .git]]} {
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			lappend recent $p
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		} else {
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			_unset_recentrepo $p
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		}
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	}
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	return $recent
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}
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261
proc _unset_recentrepo {p} {
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	regsub -all -- {([()\[\]{}\.^$+*?\\])} $p {\\\1} p
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	catch {git config --global --unset-all gui.recentrepo "^$p\$"}
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	load_config 1
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}
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267
proc _append_recentrepos {path} {
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	set path [file normalize $path]
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	set recent [get_config gui.recentrepo]
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271
	if {[lindex $recent end] eq $path} {
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		return
273
	}
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275
	set i [lsearch $recent $path]
276
	if {$i >= 0} {
277
		_unset_recentrepo $path
278
	}
279

280
	git config --global --add gui.recentrepo $path
281
	load_config 1
282
	set recent [get_config gui.recentrepo]
283

284
	if {[set maxrecent [get_config gui.maxrecentrepo]] eq {}} {
285
		set maxrecent 10
286
	}
287

288
	while {[llength $recent] > $maxrecent} {
289
		_unset_recentrepo [lindex $recent 0]
290
		set recent [get_config gui.recentrepo]
291
	}
292
}
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294
method _open_recent {xy} {
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	set id [lindex [split [$w_recentlist index @$xy] .] 0]
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	set local_path [lindex $sorted_recent [expr {$id - 1}]]
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	_do_open2 $this
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}
299

300
method _open_recent_path {p} {
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	set local_path $p
302
	_do_open2 $this
303
}
304

305
method _next {action} {
306
	global NS
307
	destroy $w_body
308
	if {![winfo exists $w_next]} {
309
		${NS}::button $w_next -default active
310
		set pos -before
311
		if {[tk windowingsystem] eq "win32"} { set pos -after }
312
		pack $w_next -side right -padx 5 $pos $w_quit
313
	}
314
	_do_$action $this
315
}
316

317
method _write_local_path {args} {
318
	if {$local_path eq {}} {
319
		$w_next conf -state disabled
320
	} else {
321
		$w_next conf -state normal
322
	}
323
}
324

325
method _git_init {} {
326
	if {[catch {file mkdir $local_path} err]} {
327
		error_popup [strcat \
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			[mc "Failed to create repository %s:" $local_path] \
329
			"\n\n$err"]
330
		return 0
331
	}
332

333
	if {[catch {cd $local_path} err]} {
334
		error_popup [strcat \
335
			[mc "Failed to create repository %s:" $local_path] \
336
			"\n\n$err"]
337
		return 0
338
	}
339

340
	if {[catch {git init} err]} {
341
		error_popup [strcat \
342
			[mc "Failed to create repository %s:" $local_path] \
343
			"\n\n$err"]
344
		return 0
345
	}
346

347
	_append_recentrepos [pwd]
348
	set ::_gitdir .git
349
	set ::_prefix {}
350
	return 1
351
}
352

353
proc _is_git {path {outdir_var ""}} {
354
	if {$outdir_var ne ""} {
355
		upvar 1 $outdir_var outdir
356
	}
357
	if {[catch {set outdir [git rev-parse --resolve-git-dir $path]}]} {
358
		return 0
359
	}
360
	return 1
361
}
362

363
proc _objdir {path} {
364
	set objdir [file join $path .git objects]
365
	if {[file isdirectory $objdir]} {
366
		return $objdir
367
	}
368

369
	set objdir [file join $path objects]
370
	if {[file isdirectory $objdir]} {
371
		return $objdir
372
	}
373

374
	return {}
375
}
376

377
######################################################################
378
##
379
## Create New Repository
380

381
method _do_new {} {
382
	global use_ttk NS
383
	$w_next conf \
384
		-state disabled \
385
		-command [cb _do_new2] \
386
		-text [mc "Create"]
387

388
	${NS}::frame $w_body
389
	${NS}::label $w_body.h \
390
		-font font_uibold -anchor center \
391
		-text [mc "Create New Repository"]
392
	pack $w_body.h -side top -fill x -pady 10
393
	pack $w_body -fill x -padx 10
394

395
	${NS}::frame $w_body.where
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	${NS}::label $w_body.where.l -text [mc "Directory:"]
397
	${NS}::entry $w_body.where.t \
398
		-textvariable @local_path \
399
		-width 50
400
	${NS}::button $w_body.where.b \
401
		-text [mc "Browse"] \
402
		-command [cb _new_local_path]
403
	set w_localpath $w_body.where.t
404

405
	grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
406
	pack $w_body.where -fill x
407

408
	grid columnconfigure $w_body.where 1 -weight 1
409

410
	trace add variable @local_path write [cb _write_local_path]
411
	bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
412
	update
413
	focus $w_body.where.t
414
}
415

416
method _new_local_path {} {
417
	if {$local_path ne {}} {
418
		set p [file dirname $local_path]
419
	} else {
420
		set p [pwd]
421
	}
422

423
	set p [tk_chooseDirectory \
424
		-initialdir $p \
425
		-parent $top \
426
		-title [mc "Git Repository"] \
427
		-mustexist false]
428
	if {$p eq {}} return
429

430
	set p [file normalize $p]
431
	if {![_new_ok $p]} {
432
		return
433
	}
434
	set local_path $p
435
	$w_localpath icursor end
436
}
437

438
method _do_new2 {} {
439
	if {![_new_ok $local_path]} {
440
		return
441
	}
442
	if {![_git_init $this]} {
443
		return
444
	}
445
	set done 1
446
}
447

448
proc _new_ok {p} {
449
	if {[file isdirectory $p]} {
450
		if {[_is_git [file join $p .git]]} {
451
			error_popup [mc "Directory %s already exists." $p]
452
			return 0
453
		}
454
	} elseif {[file exists $p]} {
455
		error_popup [mc "File %s already exists." $p]
456
		return 0
457
	}
458
	return 1
459
}
460

461
######################################################################
462
##
463
## Clone Existing Repository
464

465
method _do_clone {} {
466
	global use_ttk NS
467
	$w_next conf \
468
		-state disabled \
469
		-command [cb _do_clone2] \
470
		-text [mc "Clone"]
471

472
	${NS}::frame $w_body
473
	${NS}::label $w_body.h \
474
		-font font_uibold -anchor center \
475
		-text [mc "Clone Existing Repository"]
476
	pack $w_body.h -side top -fill x -pady 10
477
	pack $w_body -fill x -padx 10
478

479
	set args $w_body.args
480
	${NS}::frame $w_body.args
481
	pack $args -fill both
482

483
	${NS}::label $args.origin_l -text [mc "Source Location:"]
484
	${NS}::entry $args.origin_t \
485
		-textvariable @origin_url \
486
		-width 50
487
	${NS}::button $args.origin_b \
488
		-text [mc "Browse"] \
489
		-command [cb _open_origin]
490
	grid $args.origin_l $args.origin_t $args.origin_b -sticky ew
491

492
	${NS}::label $args.where_l -text [mc "Target Directory:"]
493
	${NS}::entry $args.where_t \
494
		-textvariable @local_path \
495
		-width 50
496
	${NS}::button $args.where_b \
497
		-text [mc "Browse"] \
498
		-command [cb _new_local_path]
499
	grid $args.where_l $args.where_t $args.where_b -sticky ew
500
	set w_localpath $args.where_t
501

502
	${NS}::label $args.type_l -text [mc "Clone Type:"]
503
	${NS}::frame $args.type_f
504
	set w_types [list]
505
	lappend w_types [${NS}::radiobutton $args.type_f.hardlink \
506
		-state disabled \
507
		-text [mc "Standard (Fast, Semi-Redundant, Hardlinks)"] \
508
		-variable @clone_type \
509
		-value hardlink]
510
	lappend w_types [${NS}::radiobutton $args.type_f.full \
511
		-state disabled \
512
		-text [mc "Full Copy (Slower, Redundant Backup)"] \
513
		-variable @clone_type \
514
		-value full]
515
	lappend w_types [${NS}::radiobutton $args.type_f.shared \
516
		-state disabled \
517
		-text [mc "Shared (Fastest, Not Recommended, No Backup)"] \
518
		-variable @clone_type \
519
		-value shared]
520
	foreach r $w_types {
521
		pack $r -anchor w
522
	}
523
	${NS}::checkbutton $args.type_f.recursive \
524
		-text [mc "Recursively clone submodules too"] \
525
		-variable @recursive \
526
		-onvalue true -offvalue false
527
	pack $args.type_f.recursive -anchor w
528
	grid $args.type_l $args.type_f -sticky new
529

530
	grid columnconfigure $args 1 -weight 1
531

532
	trace add variable @local_path write [cb _update_clone]
533
	trace add variable @origin_url write [cb _update_clone]
534
	bind $w_body.h <Destroy> "
535
		[list trace remove variable @local_path write [cb _update_clone]]
536
		[list trace remove variable @origin_url write [cb _update_clone]]
537
	"
538
	update
539
	focus $args.origin_t
540
}
541

542
method _open_origin {} {
543
	if {$origin_url ne {} && [file isdirectory $origin_url]} {
544
		set p $origin_url
545
	} else {
546
		set p [pwd]
547
	}
548

549
	set p [tk_chooseDirectory \
550
		-initialdir $p \
551
		-parent $top \
552
		-title [mc "Git Repository"] \
553
		-mustexist true]
554
	if {$p eq {}} return
555

556
	set p [file normalize $p]
557
	if {![_is_git [file join $p .git]] && ![_is_git $p]} {
558
		error_popup [mc "Not a Git repository: %s" [file tail $p]]
559
		return
560
	}
561
	set origin_url $p
562
}
563

564
method _update_clone {args} {
565
	if {$local_path ne {} && $origin_url ne {}} {
566
		$w_next conf -state normal
567
	} else {
568
		$w_next conf -state disabled
569
	}
570

571
	if {$origin_url ne {} &&
572
		(  [_is_git [file join $origin_url .git]]
573
		|| [_is_git $origin_url])} {
574
		set e normal
575
		if {[[lindex $w_types 0] cget -state] eq {disabled}} {
576
			set clone_type hardlink
577
		}
578
	} else {
579
		set e disabled
580
		set clone_type full
581
	}
582

583
	foreach r $w_types {
584
		$r conf -state $e
585
	}
586
}
587

588
method _do_clone2 {} {
589
	if {[file isdirectory $origin_url]} {
590
		set origin_url [file normalize $origin_url]
591
	}
592

593
	if {$clone_type eq {hardlink} && ![file isdirectory $origin_url]} {
594
		error_popup [mc "Standard only available for local repository."]
595
		return
596
	}
597
	if {$clone_type eq {shared} && ![file isdirectory $origin_url]} {
598
		error_popup [mc "Shared only available for local repository."]
599
		return
600
	}
601

602
	if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
603
		set objdir [_objdir $origin_url]
604
		if {$objdir eq {}} {
605
			error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
606
			return
607
		}
608
	}
609

610
	set giturl $origin_url
611

612
	if {[file exists $local_path]} {
613
		error_popup [mc "Location %s already exists." $local_path]
614
		return
615
	}
616

617
	if {![_git_init $this]} return
618
	set local_path [pwd]
619

620
	if {[catch {
621
			git config remote.$origin_name.url $giturl
622
			git config remote.$origin_name.fetch +refs/heads/*:refs/remotes/$origin_name/*
623
		} err]} {
624
		error_popup [strcat [mc "Failed to configure origin"] "\n\n$err"]
625
		return
626
	}
627

628
	destroy $w_body $w_next
629

630
	switch -exact -- $clone_type {
631
	hardlink {
632
		set o_status [status_bar::two_line $w_body]
633
		pack $w_body -fill x -padx 10 -pady 10
634

635
		set status_op [$o_status start \
636
			[mc "Counting objects"] \
637
			[mc "buckets"]]
638
		update
639

640
		if {[file exists [file join $objdir info alternates]]} {
641
			set pwd [pwd]
642
			if {[catch {
643
				file mkdir [gitdir objects info]
644
				set f_in [open [file join $objdir info alternates] r]
645
				set f_cp [open [gitdir objects info alternates] w]
646
				fconfigure $f_in -translation binary -encoding binary
647
				fconfigure $f_cp -translation binary -encoding binary
648
				cd $objdir
649
				while {[gets $f_in line] >= 0} {
650
					puts $f_cp [file normalize $line]
651
				}
652
				close $f_in
653
				close $f_cp
654
				cd $pwd
655
			} err]} {
656
				catch {cd $pwd}
657
				_clone_failed $this [mc "Unable to copy objects/info/alternates: %s" $err]
658
				$status_op stop
659
				return
660
			}
661
		}
662

663
		set tolink  [list]
664
		set buckets [glob \
665
			-tails \
666
			-nocomplain \
667
			-directory [file join $objdir] ??]
668
		set bcnt [expr {[llength $buckets] + 2}]
669
		set bcur 1
670
		$status_op update $bcur $bcnt
671
		update
672

673
		file mkdir [file join .git objects pack]
674
		foreach i [glob -tails -nocomplain \
675
			-directory [file join $objdir pack] *] {
676
			lappend tolink [file join pack $i]
677
		}
678
		$status_op update [incr bcur] $bcnt
679
		update
680

681
		foreach i $buckets {
682
			file mkdir [file join .git objects $i]
683
			foreach j [glob -tails -nocomplain \
684
				-directory [file join $objdir $i] *] {
685
				lappend tolink [file join $i $j]
686
			}
687
			$status_op update [incr bcur] $bcnt
688
			update
689
		}
690
		$status_op stop
691

692
		if {$tolink eq {}} {
693
			info_popup [strcat \
694
				[mc "Nothing to clone from %s." $origin_url] \
695
				"\n" \
696
				[mc "The 'master' branch has not been initialized."] \
697
				]
698
			destroy $w_body
699
			set done 1
700
			return
701
		}
702

703
		set i [lindex $tolink 0]
704
		if {[catch {
705
				file link -hard \
706
					[file join .git objects $i] \
707
					[file join $objdir $i]
708
			} err]} {
709
			info_popup [mc "Hardlinks are unavailable.  Falling back to copying."]
710
			set i [_copy_files $this $objdir $tolink]
711
		} else {
712
			set i [_link_files $this $objdir [lrange $tolink 1 end]]
713
		}
714
		if {!$i} return
715

716
		destroy $w_body
717

718
		set o_status {}
719
	}
720
	full {
721
		set o_cons [console::embed \
722
			$w_body \
723
			[mc "Cloning from %s" $origin_url]]
724
		pack $w_body -fill both -expand 1 -padx 10
725
		$o_cons exec \
726
			[list git fetch --no-tags -k $origin_name] \
727
			[cb _do_clone_tags]
728
	}
729
	shared {
730
		set fd [open [gitdir objects info alternates] w]
731
		fconfigure $fd -translation binary
732
		puts $fd $objdir
733
		close $fd
734
	}
735
	}
736

737
	if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
738
		if {![_clone_refs $this]} return
739
		set pwd [pwd]
740
		if {[catch {
741
				cd $origin_url
742
				set HEAD [git rev-parse --verify HEAD^0]
743
			} err]} {
744
			_clone_failed $this [mc "Not a Git repository: %s" [file tail $origin_url]]
745
			return 0
746
		}
747
		cd $pwd
748
		_do_clone_checkout $this $HEAD
749
	}
750
}
751

752
method _copy_files {objdir tocopy} {
753
	set status_op [$o_status start \
754
		[mc "Copying objects"] \
755
		[mc "KiB"]]
756
	set tot 0
757
	set cmp 0
758
	foreach p $tocopy {
759
		incr tot [file size [file join $objdir $p]]
760
	}
761
	foreach p $tocopy {
762
		if {[catch {
763
				set f_in [open [file join $objdir $p] r]
764
				set f_cp [open [file join .git objects $p] w]
765
				fconfigure $f_in -translation binary -encoding binary
766
				fconfigure $f_cp -translation binary -encoding binary
767

768
				while {![eof $f_in]} {
769
					incr cmp [fcopy $f_in $f_cp -size 16384]
770
					$status_op update \
771
						[expr {$cmp / 1024}] \
772
						[expr {$tot / 1024}]
773
					update
774
				}
775

776
				close $f_in
777
				close $f_cp
778
			} err]} {
779
			_clone_failed $this [mc "Unable to copy object: %s" $err]
780
			$status_op stop
781
			return 0
782
		}
783
	}
784
	$status_op stop
785
	return 1
786
}
787

788
method _link_files {objdir tolink} {
789
	set total [llength $tolink]
790
	set status_op [$o_status start \
791
		[mc "Linking objects"] \
792
		[mc "objects"]]
793
	for {set i 0} {$i < $total} {} {
794
		set p [lindex $tolink $i]
795
		if {[catch {
796
				file link -hard \
797
					[file join .git objects $p] \
798
					[file join $objdir $p]
799
			} err]} {
800
			_clone_failed $this [mc "Unable to hardlink object: %s" $err]
801
			$status_op stop
802
			return 0
803
		}
804

805
		incr i
806
		if {$i % 5 == 0} {
807
			$status_op update $i $total
808
			update
809
		}
810
	}
811
	$status_op stop
812
	return 1
813
}
814

815
method _clone_refs {} {
816
	set pwd [pwd]
817
	if {[catch {cd $origin_url} err]} {
818
		error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
819
		return 0
820
	}
821
	set fd_in [git_read for-each-ref \
822
		--tcl \
823
		{--format=list %(refname) %(objectname) %(*objectname)}]
824
	cd $pwd
825

826
	set fd [open [gitdir packed-refs] w]
827
	fconfigure $fd -translation binary
828
	puts $fd "# pack-refs with: peeled"
829
	while {[gets $fd_in line] >= 0} {
830
		set line [eval $line]
831
		set refn [lindex $line 0]
832
		set robj [lindex $line 1]
833
		set tobj [lindex $line 2]
834

835
		if {[regsub ^refs/heads/ $refn \
836
			"refs/remotes/$origin_name/" refn]} {
837
			puts $fd "$robj $refn"
838
		} elseif {[string match refs/tags/* $refn]} {
839
			puts $fd "$robj $refn"
840
			if {$tobj ne {}} {
841
				puts $fd "^$tobj"
842
			}
843
		}
844
	}
845
	close $fd_in
846
	close $fd
847
	return 1
848
}
849

850
method _do_clone_tags {ok} {
851
	if {$ok} {
852
		$o_cons exec \
853
			[list git fetch --tags -k $origin_name] \
854
			[cb _do_clone_HEAD]
855
	} else {
856
		$o_cons done $ok
857
		_clone_failed $this [mc "Cannot fetch branches and objects.  See console output for details."]
858
	}
859
}
860

861
method _do_clone_HEAD {ok} {
862
	if {$ok} {
863
		$o_cons exec \
864
			[list git fetch $origin_name HEAD] \
865
			[cb _do_clone_full_end]
866
	} else {
867
		$o_cons done $ok
868
		_clone_failed $this [mc "Cannot fetch tags.  See console output for details."]
869
	}
870
}
871

872
method _do_clone_full_end {ok} {
873
	$o_cons done $ok
874

875
	if {$ok} {
876
		destroy $w_body
877

878
		set HEAD {}
879
		if {[file exists [gitdir FETCH_HEAD]]} {
880
			set fd [open [gitdir FETCH_HEAD] r]
881
			while {[gets $fd line] >= 0} {
882
				if {[regexp "^(.{40})\t\t" $line line HEAD]} {
883
					break
884
				}
885
			}
886
			close $fd
887
		}
888

889
		catch {git pack-refs}
890
		_do_clone_checkout $this $HEAD
891
	} else {
892
		_clone_failed $this [mc "Cannot determine HEAD.  See console output for details."]
893
	}
894
}
895

896
method _clone_failed {{why {}}} {
897
	if {[catch {file delete -force $local_path} err]} {
898
		set why [strcat \
899
			$why \
900
			"\n\n" \
901
			[mc "Unable to cleanup %s" $local_path] \
902
			"\n\n" \
903
			$err]
904
	}
905
	if {$why ne {}} {
906
		update
907
		error_popup [strcat [mc "Clone failed."] "\n" $why]
908
	}
909
}
910

911
method _do_clone_checkout {HEAD} {
912
	if {$HEAD eq {}} {
913
		info_popup [strcat \
914
			[mc "No default branch obtained."] \
915
			"\n" \
916
			[mc "The 'master' branch has not been initialized."] \
917
			]
918
		set done 1
919
		return
920
	}
921
	if {[catch {
922
			git update-ref HEAD $HEAD^0
923
		} err]} {
924
		info_popup [strcat \
925
			[mc "Cannot resolve %s as a commit." $HEAD^0] \
926
			"\n  $err" \
927
			"\n" \
928
			[mc "The 'master' branch has not been initialized."] \
929
			]
930
		set done 1
931
		return
932
	}
933

934
	set status [status_bar::two_line $w_body]
935
	pack $w_body -fill x -padx 10 -pady 10
936

937
	# We start the status operation here.
938
	#
939
	# This function calls _readtree_wait as a callback.
940
	#
941
	# _readtree_wait in turn either calls _do_clone_submodules directly,
942
	# or calls _postcheckout_wait as a callback which then calls
943
	# _do_clone_submodules.
944
	#
945
	# _do_clone_submodules calls _do_validate_submodule_cloning.
946
	#
947
	# _do_validate_submodule_cloning stops the status operation.
948
	#
949
	# There are no other calls into this chain from other code.
950

951
	set o_status_op [$status start \
952
		[mc "Creating working directory"] \
953
		[mc "files"]]
954

955
	set readtree_err {}
956
	set fd [git_read --stderr read-tree \
957
		-m \
958
		-u \
959
		-v \
960
		HEAD \
961
		HEAD \
962
		]
963
	fconfigure $fd -blocking 0 -translation binary
964
	fileevent $fd readable [cb _readtree_wait $fd]
965
}
966

967
method _readtree_wait {fd} {
968
	set buf [read $fd]
969
	$o_status_op update_meter $buf
970
	append readtree_err $buf
971

972
	fconfigure $fd -blocking 1
973
	if {![eof $fd]} {
974
		fconfigure $fd -blocking 0
975
		return
976
	}
977

978
	if {[catch {close $fd}]} {
979
		set err $readtree_err
980
		regsub {^fatal: } $err {} err
981
		error_popup [strcat \
982
			[mc "Initial file checkout failed."] \
983
			"\n\n$err"]
984
		return
985
	}
986

987
	# -- Run the post-checkout hook.
988
	#
989
	set fd_ph [githook_read post-checkout [string repeat 0 40] \
990
		[git rev-parse HEAD] 1]
991
	if {$fd_ph ne {}} {
992
		global pch_error
993
		set pch_error {}
994
		fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
995
		fileevent $fd_ph readable [cb _postcheckout_wait $fd_ph]
996
	} else {
997
		_do_clone_submodules $this
998
	}
999
}
1000

1001
method _postcheckout_wait {fd_ph} {
1002
	global pch_error
1003

1004
	append pch_error [read $fd_ph]
1005
	fconfigure $fd_ph -blocking 1
1006
	if {[eof $fd_ph]} {
1007
		if {[catch {close $fd_ph}]} {
1008
			hook_failed_popup post-checkout $pch_error 0
1009
		}
1010
		unset pch_error
1011
		_do_clone_submodules $this
1012
		return
1013
	}
1014
	fconfigure $fd_ph -blocking 0
1015
}
1016

1017
method _do_clone_submodules {} {
1018
	if {$recursive eq {true}} {
1019
		$o_status_op stop
1020
		set o_status_op {}
1021

1022
		destroy $w_body
1023

1024
		set o_cons [console::embed \
1025
			$w_body \
1026
			[mc "Cloning submodules"]]
1027
		pack $w_body -fill both -expand 1 -padx 10
1028
		$o_cons exec \
1029
			[list git submodule update --init --recursive] \
1030
			[cb _do_validate_submodule_cloning]
1031
	} else {
1032
		set done 1
1033
	}
1034
}
1035

1036
method _do_validate_submodule_cloning {ok} {
1037
	if {$ok} {
1038
		$o_cons done $ok
1039
		set done 1
1040
	} else {
1041
		_clone_failed $this [mc "Cannot clone submodules."]
1042
	}
1043
}
1044

1045
######################################################################
1046
##
1047
## Open Existing Repository
1048

1049
method _do_open {} {
1050
	global NS
1051
	$w_next conf \
1052
		-state disabled \
1053
		-command [cb _do_open2] \
1054
		-text [mc "Open"]
1055

1056
	${NS}::frame $w_body
1057
	${NS}::label $w_body.h \
1058
		-font font_uibold -anchor center \
1059
		-text [mc "Open Existing Repository"]
1060
	pack $w_body.h -side top -fill x -pady 10
1061
	pack $w_body -fill x -padx 10
1062

1063
	${NS}::frame $w_body.where
1064
	${NS}::label $w_body.where.l -text [mc "Repository:"]
1065
	${NS}::entry $w_body.where.t \
1066
		-textvariable @local_path \
1067
		-width 50
1068
	${NS}::button $w_body.where.b \
1069
		-text [mc "Browse"] \
1070
		-command [cb _open_local_path]
1071

1072
	grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
1073
	pack $w_body.where -fill x
1074

1075
	grid columnconfigure $w_body.where 1 -weight 1
1076

1077
	trace add variable @local_path write [cb _write_local_path]
1078
	bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
1079
	update
1080
	focus $w_body.where.t
1081
}
1082

1083
method _open_local_path {} {
1084
	if {$local_path ne {}} {
1085
		set p $local_path
1086
	} else {
1087
		set p [pwd]
1088
	}
1089

1090
	set p [tk_chooseDirectory \
1091
		-initialdir $p \
1092
		-parent $top \
1093
		-title [mc "Git Repository"] \
1094
		-mustexist true]
1095
	if {$p eq {}} return
1096

1097
	set p [file normalize $p]
1098
	if {![_is_git [file join $p .git]]} {
1099
		error_popup [mc "Not a Git repository: %s" [file tail $p]]
1100
		return
1101
	}
1102
	set local_path $p
1103
}
1104

1105
method _do_open2 {} {
1106
	if {![_is_git [file join $local_path .git] actualgit]} {
1107
		error_popup [mc "Not a Git repository: %s" [file tail $local_path]]
1108
		return
1109
	}
1110

1111
	if {[catch {cd $local_path} err]} {
1112
		error_popup [strcat \
1113
			[mc "Failed to open repository %s:" $local_path] \
1114
			"\n\n$err"]
1115
		return
1116
	}
1117

1118
	_append_recentrepos [pwd]
1119
	set ::_gitdir $actualgit
1120
	set ::_prefix {}
1121
	set done 1
1122
}
1123

1124
}
1125