1# git-gui Git repository chooser
2# Copyright (C) 2007 Shawn Pearce
3class choose_repository {
5# Henrik Nyh's alternative Git logo, from his blog post
7# http://henrik.nyh.se/2007/06/alternative-git-logo-and-favicon
8#
9image create photo ::choose_repository::git_logo -data {
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35JwQAOw==
36}
37field top
39field w
40field w_body ; # Widget holding the center content
41field w_next ; # Next button
42field o_cons ; # Console object (if active)
43field w_types ; # List of type buttons in clone
44field action new ; # What action are we going to perform?
46field done 0 ; # Finished picking the repository?
47field local_path {} ; # Where this repository is locally
48field origin_url {} ; # Where we are cloning from
49field origin_name origin ; # What we shall call 'origin'
50field clone_type hardlink ; # Type of clone to construct
51field readtree_err ; # Error output from read-tree (if any)
52constructor pick {} {
54 global M1T M1B
55 make_toplevel top w
57 wm title $top [mc "Git Gui"]
58 if {$top eq {.}} {
60 menu $w.mbar -tearoff 0
61 $top configure -menu $w.mbar
62 $w.mbar add cascade \
64 -label [mc Repository] \
65 -menu $w.mbar.repository
66 menu $w.mbar.repository
67 $w.mbar.repository add command \
68 -label [mc Quit] \
69 -command exit \
70 -accelerator $M1T-Q
71 if {[is_MacOSX]} {
73 $w.mbar add cascade -label [mc Apple] -menu .mbar.apple
74 menu $w.mbar.apple
75 $w.mbar.apple add command \
76 -label [mc "About %s" [appname]] \
77 -command do_about
78 } else {
79 $w.mbar add cascade -label [mc Help] -menu $w.mbar.help
80 menu $w.mbar.help
81 $w.mbar.help add command \
82 -label [mc "About %s" [appname]] \
83 -command do_about
84 }
85 wm protocol $top WM_DELETE_WINDOW exit
87 bind $top <$M1B-q> exit
88 bind $top <$M1B-Q> exit
89 bind $top <Key-Escape> exit
90 } else {
91 wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
92 bind $top <Key-Escape> [list destroy $top]
93 }
94 label $w.git_logo \
96 -borderwidth 1 \
97 -relief sunken \
98 -background white \
99 -image ::choose_repository::git_logo
100 pack $w.git_logo -side left -fill y -padx 10 -pady 10
101 set w_body $w.body
103 frame $w_body
104 radiobutton $w_body.new \
105 -anchor w \
106 -text [mc "Create New Repository"] \
107 -variable @action \
108 -value new
109 radiobutton $w_body.clone \
110 -anchor w \
111 -text [mc "Clone Existing Repository"] \
112 -variable @action \
113 -value clone
114 radiobutton $w_body.open \
115 -anchor w \
116 -text [mc "Open Existing Repository"] \
117 -variable @action \
118 -value open
119 pack $w_body.new -anchor w -fill x
120 pack $w_body.clone -anchor w -fill x
121 pack $w_body.open -anchor w -fill x
122 pack $w_body -fill x -padx 10 -pady 10
123 frame $w.buttons
125 set w_next $w.buttons.next
126 button $w_next \
127 -default active \
128 -text [mc "Next >"] \
129 -command [cb _next]
130 pack $w_next -side right -padx 5
131 button $w.buttons.quit \
132 -text [mc "Quit"] \
133 -command exit
134 pack $w.buttons.quit -side right -padx 5
135 pack $w.buttons -side bottom -fill x -padx 10 -pady 10
136 bind $top <Return> [cb _invoke_next]
138 bind $top <Visibility> "
139 [cb _center]
140 grab $top
141 focus $top
142 bind $top <Visibility> {}
143 "
144 wm deiconify $top
145 tkwait variable @done
146 if {$top eq {.}} {
148 eval destroy [winfo children $top]
149 }
150}
151proc _home {} {
153 if {[catch {set h $::env(HOME)}]
154 || ![file isdirectory $h]} {
155 set h .
156 }
157 return $h
158}
159method _center {} {
161 set nx [winfo reqwidth $top]
162 set ny [winfo reqheight $top]
163 set rx [expr {([winfo screenwidth $top] - $nx) / 3}]
164 set ry [expr {([winfo screenheight $top] - $ny) / 3}]
165 wm geometry $top [format {+%d+%d} $rx $ry]
166}
167method _invoke_next {} {
169 if {[winfo exists $w_next]} {
170 uplevel #0 [$w_next cget -command]
171 }
172}
173method _next {} {
175 destroy $w_body
176 _do_$action $this
177}
178method _write_local_path {args} {
180 if {$local_path eq {}} {
181 $w_next conf -state disabled
182 } else {
183 $w_next conf -state normal
184 }
185}
186method _git_init {} {
188 if {[file exists $local_path]} {
189 error_popup [mc "Location %s already exists." $local_path]
190 return 0
191 }
192 if {[catch {file mkdir $local_path} err]} {
194 error_popup [strcat \
195 [mc "Failed to create repository %s:" $local_path] \
196 "\n\n$err"]
197 return 0
198 }
199 if {[catch {cd $local_path} err]} {
201 error_popup [strcat \
202 [mc "Failed to create repository %s:" $local_path] \
203 "\n\n$err"]
204 return 0
205 }
206 if {[catch {git init} err]} {
208 error_popup [strcat \
209 [mc "Failed to create repository %s:" $local_path] \
210 "\n\n$err"]
211 return 0
212 }
213 set ::_gitdir .git
215 set ::_prefix {}
216 return 1
217}
218proc _is_git {path} {
220 if {[file exists [file join $path HEAD]]
221 && [file exists [file join $path objects]]
222 && [file exists [file join $path config]]} {
223 return 1
224 }
225 return 0
226}
227######################################################################
229##
230## Create New Repository
231method _do_new {} {
233 $w_next conf \
234 -state disabled \
235 -command [cb _do_new2] \
236 -text [mc "Create"]
237 frame $w_body
239 label $w_body.h \
240 -font font_uibold \
241 -text [mc "Create New Repository"]
242 pack $w_body.h -side top -fill x -pady 10
243 pack $w_body -fill x -padx 10
244 frame $w_body.where
246 label $w_body.where.l -text [mc "Directory:"]
247 entry $w_body.where.t \
248 -textvariable @local_path \
249 -font font_diff \
250 -width 50
251 button $w_body.where.b \
252 -text [mc "Browse"] \
253 -command [cb _new_local_path]
254 pack $w_body.where.b -side right
256 pack $w_body.where.l -side left
257 pack $w_body.where.t -fill x
258 pack $w_body.where -fill x
259 trace add variable @local_path write [cb _write_local_path]
261 update
262 focus $w_body.where.t
263}
264method _new_local_path {} {
266 if {$local_path ne {}} {
267 set p [file dirname $local_path]
268 } else {
269 set p [_home]
270 }
271 set p [tk_chooseDirectory \
273 -initialdir $p \
274 -parent $top \
275 -title [mc "Git Repository"] \
276 -mustexist false]
277 if {$p eq {}} return
278 set p [file normalize $p]
280 if {[file isdirectory $p]} {
281 foreach i [glob \
282 -directory $p \
283 -tails \
284 -nocomplain \
285 * .*] {
286 switch -- $i {
287 . continue
288 .. continue
289 default {
290 error_popup [mc "Directory %s already exists." $p]
291 return
292 }
293 }
294 }
295 if {[catch {file delete $p} err]} {
296 error_popup [strcat \
297 [mc "Directory %s already exists." $p] \
298 "\n\n$err"]
299 return
300 }
301 } elseif {[file exists $p]} {
302 error_popup [mc "File %s already exists." $p]
303 return
304 }
305 set local_path $p
306}
307method _do_new2 {} {
309 if {![_git_init $this]} {
310 return
311 }
312 set done 1
313}
314######################################################################
316##
317## Clone Existing Repository
318method _do_clone {} {
320 $w_next conf \
321 -state disabled \
322 -command [cb _do_clone2] \
323 -text [mc "Clone"]
324 frame $w_body
326 label $w_body.h \
327 -font font_uibold \
328 -text [mc "Clone Existing Repository"]
329 pack $w_body.h -side top -fill x -pady 10
330 pack $w_body -fill x -padx 10
331 set args $w_body.args
333 frame $w_body.args
334 pack $args -fill both
335 label $args.origin_l -text [mc "URL:"]
337 entry $args.origin_t \
338 -textvariable @origin_url \
339 -font font_diff \
340 -width 50
341 button $args.origin_b \
342 -text [mc "Browse"] \
343 -command [cb _open_origin]
344 grid $args.origin_l $args.origin_t $args.origin_b -sticky ew
345 label $args.where_l -text [mc "Directory:"]
347 entry $args.where_t \
348 -textvariable @local_path \
349 -font font_diff \
350 -width 50
351 button $args.where_b \
352 -text [mc "Browse"] \
353 -command [cb _new_local_path]
354 grid $args.where_l $args.where_t $args.where_b -sticky ew
355 label $args.type_l -text [mc "Clone Type:"]
357 frame $args.type_f
358 set w_types [list]
359 lappend w_types [radiobutton $args.type_f.hardlink \
360 -state disabled \
361 -anchor w \
362 -text [mc "Standard (Fast, Semi-Redundant, Hardlinks)"] \
363 -variable @clone_type \
364 -value hardlink]
365 lappend w_types [radiobutton $args.type_f.full \
366 -state disabled \
367 -anchor w \
368 -text [mc "Full Copy (Slower, Redundant Backup)"] \
369 -variable @clone_type \
370 -value full]
371 lappend w_types [radiobutton $args.type_f.shared \
372 -state disabled \
373 -anchor w \
374 -text [mc "Shared (Fastest, Not Recommended, No Backup)"] \
375 -variable @clone_type \
376 -value shared]
377 foreach r $w_types {
378 pack $r -anchor w
379 }
380 grid $args.type_l $args.type_f -sticky new
381 grid columnconfigure $args 1 -weight 1
383 trace add variable @local_path write [cb _update_clone]
385 trace add variable @origin_url write [cb _update_clone]
386 update
387 focus $args.origin_t
388}
389method _open_origin {} {
391 if {$origin_url ne {} && [file isdirectory $origin_url]} {
392 set p $origin_url
393 } else {
394 set p [_home]
395 }
396 set p [tk_chooseDirectory \
398 -initialdir $p \
399 -parent $top \
400 -title [mc "Git Repository"] \
401 -mustexist true]
402 if {$p eq {}} return
403 set p [file normalize $p]
405 if {![_is_git [file join $p .git]] && ![_is_git $p]} {
406 error_popup [mc "Not a Git repository: %s" [file tail $p]]
407 return
408 }
409 set origin_url $p
410}
411method _update_clone {args} {
413 if {$local_path ne {} && $origin_url ne {}} {
414 $w_next conf -state normal
415 } else {
416 $w_next conf -state disabled
417 }
418 if {$origin_url ne {} &&
420 ( [_is_git [file join $origin_url .git]]
421 || [_is_git $origin_url])} {
422 set e normal
423 if {[[lindex $w_types 0] cget -state] eq {disabled}} {
424 set clone_type hardlink
425 }
426 } else {
427 set e disabled
428 set clone_type full
429 }
430 foreach r $w_types {
432 $r conf -state $e
433 }
434}
435method _do_clone2 {} {
437 if {[file isdirectory $origin_url]} {
438 set origin_url [file normalize $origin_url]
439 }
440 if {$clone_type eq {hardlink} && ![file isdirectory $origin_url]} {
442 error_popup [mc "Standard only available for local repository."]
443 return
444 }
445 if {$clone_type eq {shared} && ![file isdirectory $origin_url]} {
446 error_popup [mc "Shared only available for local repository."]
447 return
448 }
449 if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
451 set objdir [file join $origin_url .git objects]
452 if {![file isdirectory $objdir]} {
453 set objdir [file join $origin_url objects]
454 if {![file isdirectory $objdir]} {
455 error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
456 return
457 }
458 }
459 }
460 set giturl $origin_url
462 if {[is_Cygwin] && [file isdirectory $giturl]} {
463 set giturl [exec cygpath --unix --absolute $giturl]
464 if {$clone_type eq {shared}} {
465 set objdir [exec cygpath --unix --absolute $objdir]
466 }
467 }
468 if {![_git_init $this]} return
470 set local_path [pwd]
471 if {[catch {
473 git config remote.$origin_name.url $giturl
474 git config remote.$origin_name.fetch +refs/heads/*:refs/remotes/$origin_name/*
475 } err]} {
476 error_popup [strcat [mc "Failed to configure origin"] "\n\n$err"]
477 return
478 }
479 destroy $w_body $w_next
481 switch -exact -- $clone_type {
483 hardlink {
484 set o_cons [status_bar::two_line $w_body]
485 pack $w_body -fill x -padx 10 -pady 10
486 $o_cons start \
488 [mc "Counting objects"] \
489 [mc "buckets"]
490 update
491 if {[file exists [file join $objdir info alternates]]} {
493 set pwd [pwd]
494 if {[catch {
495 file mkdir [gitdir objects info]
496 set f_in [open [file join $objdir info alternates] r]
497 set f_cp [open [gitdir objects info alternates] w]
498 fconfigure $f_in -translation binary -encoding binary
499 fconfigure $f_cp -translation binary -encoding binary
500 cd $objdir
501 while {[gets $f_in line] >= 0} {
502 if {[is_Cygwin]} {
503 puts $f_cp [exec cygpath --unix --absolute $line]
504 } else {
505 puts $f_cp [file normalize $line]
506 }
507 }
508 close $f_in
509 close $f_cp
510 cd $pwd
511 } err]} {
512 catch {cd $pwd}
513 _clone_failed $this [mc "Unable to copy objects/info/alternates: %s" $err]
514 return
515 }
516 }
517 set tolink [list]
519 set buckets [glob \
520 -tails \
521 -nocomplain \
522 -directory [file join $objdir] ??]
523 set bcnt [expr {[llength $buckets] + 2}]
524 set bcur 1
525 $o_cons update $bcur $bcnt
526 update
527 file mkdir [file join .git objects pack]
529 foreach i [glob -tails -nocomplain \
530 -directory [file join $objdir pack] *] {
531 lappend tolink [file join pack $i]
532 }
533 $o_cons update [incr bcur] $bcnt
534 update
535 foreach i $buckets {
537 file mkdir [file join .git objects $i]
538 foreach j [glob -tails -nocomplain \
539 -directory [file join $objdir $i] *] {
540 lappend tolink [file join $i $j]
541 }
542 $o_cons update [incr bcur] $bcnt
543 update
544 }
545 $o_cons stop
546 if {$tolink eq {}} {
548 info_popup [strcat \
549 [mc "Nothing to clone from %s." $origin_url] \
550 "\n" \
551 [mc "The 'master' branch has not been initialized."] \
552 ]
553 destroy $w_body
554 set done 1
555 return
556 }
557 set i [lindex $tolink 0]
559 if {[catch {
560 file link -hard \
561 [file join .git objects $i] \
562 [file join $objdir $i]
563 } err]} {
564 info_popup [mc "Hardlinks are unavailable. Falling back to copying."]
565 set i [_copy_files $this $objdir $tolink]
566 } else {
567 set i [_link_files $this $objdir [lrange $tolink 1 end]]
568 }
569 if {!$i} return
570 destroy $w_body
572 }
573 full {
574 set o_cons [console::embed \
575 $w_body \
576 [mc "Cloning from %s" $origin_url]]
577 pack $w_body -fill both -expand 1 -padx 10
578 $o_cons exec \
579 [list git fetch --no-tags -k $origin_name] \
580 [cb _do_clone_tags]
581 }
582 shared {
583 set fd [open [gitdir objects info alternates] w]
584 fconfigure $fd -translation binary
585 puts $fd $objdir
586 close $fd
587 }
588 }
589 if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
591 if {![_clone_refs $this]} return
592 set pwd [pwd]
593 if {[catch {
594 cd $origin_url
595 set HEAD [git rev-parse --verify HEAD^0]
596 } err]} {
597 _clone_failed $this [mc "Not a Git repository: %s" [file tail $origin_url]]
598 return 0
599 }
600 cd $pwd
601 _do_clone_checkout $this $HEAD
602 }
603}
604method _copy_files {objdir tocopy} {
606 $o_cons start \
607 [mc "Copying objects"] \
608 [mc "KiB"]
609 set tot 0
610 set cmp 0
611 foreach p $tocopy {
612 incr tot [file size [file join $objdir $p]]
613 }
614 foreach p $tocopy {
615 if {[catch {
616 set f_in [open [file join $objdir $p] r]
617 set f_cp [open [file join .git objects $p] w]
618 fconfigure $f_in -translation binary -encoding binary
619 fconfigure $f_cp -translation binary -encoding binary
620 while {![eof $f_in]} {
622 incr cmp [fcopy $f_in $f_cp -size 16384]
623 $o_cons update \
624 [expr {$cmp / 1024}] \
625 [expr {$tot / 1024}]
626 update
627 }
628 close $f_in
630 close $f_cp
631 } err]} {
632 _clone_failed $this [mc "Unable to copy object: %s" $err]
633 return 0
634 }
635 }
636 return 1
637}
638method _link_files {objdir tolink} {
640 set total [llength $tolink]
641 $o_cons start \
642 [mc "Linking objects"] \
643 [mc "objects"]
644 for {set i 0} {$i < $total} {} {
645 set p [lindex $tolink $i]
646 if {[catch {
647 file link -hard \
648 [file join .git objects $p] \
649 [file join $objdir $p]
650 } err]} {
651 _clone_failed $this [mc "Unable to hardlink object: %s" $err]
652 return 0
653 }
654 incr i
656 if {$i % 5 == 0} {
657 $o_cons update $i $total
658 update
659 }
660 }
661 return 1
662}
663method _clone_refs {} {
665 set pwd [pwd]
666 if {[catch {cd $origin_url} err]} {
667 error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
668 return 0
669 }
670 set fd_in [git_read for-each-ref \
671 --tcl \
672 {--format=list %(refname) %(objectname) %(*objectname)}]
673 cd $pwd
674 set fd [open [gitdir packed-refs] w]
676 fconfigure $fd -translation binary
677 puts $fd "# pack-refs with: peeled"
678 while {[gets $fd_in line] >= 0} {
679 set line [eval $line]
680 set refn [lindex $line 0]
681 set robj [lindex $line 1]
682 set tobj [lindex $line 2]
683 if {[regsub ^refs/heads/ $refn \
685 "refs/remotes/$origin_name/" refn]} {
686 puts $fd "$robj $refn"
687 } elseif {[string match refs/tags/* $refn]} {
688 puts $fd "$robj $refn"
689 if {$tobj ne {}} {
690 puts $fd "^$tobj"
691 }
692 }
693 }
694 close $fd_in
695 close $fd
696 return 1
697}
698method _do_clone_tags {ok} {
700 if {$ok} {
701 $o_cons exec \
702 [list git fetch --tags -k $origin_name] \
703 [cb _do_clone_HEAD]
704 } else {
705 $o_cons done $ok
706 _clone_failed $this [mc "Cannot fetch branches and objects. See console output for details."]
707 }
708}
709method _do_clone_HEAD {ok} {
711 if {$ok} {
712 $o_cons exec \
713 [list git fetch $origin_name HEAD] \
714 [cb _do_clone_full_end]
715 } else {
716 $o_cons done $ok
717 _clone_failed $this [mc "Cannot fetch tags. See console output for details."]
718 }
719}
720method _do_clone_full_end {ok} {
722 $o_cons done $ok
723 if {$ok} {
725 destroy $w_body
726 set HEAD {}
728 if {[file exists [gitdir FETCH_HEAD]]} {
729 set fd [open [gitdir FETCH_HEAD] r]
730 while {[gets $fd line] >= 0} {
731 if {[regexp "^(.{40})\t\t" $line line HEAD]} {
732 break
733 }
734 }
735 close $fd
736 }
737 catch {git pack-refs}
739 _do_clone_checkout $this $HEAD
740 } else {
741 _clone_failed $this [mc "Cannot determine HEAD. See console output for details."]
742 }
743}
744method _clone_failed {{why {}}} {
746 if {[catch {file delete -force $local_path} err]} {
747 set why [strcat \
748 $why \
749 "\n\n" \
750 [mc "Unable to cleanup %s" $local_path] \
751 "\n\n" \
752 $err]
753 }
754 if {$why ne {}} {
755 update
756 error_popup [strcat [mc "Clone failed."] "\n" $why]
757 }
758}
759method _do_clone_checkout {HEAD} {
761 if {$HEAD eq {}} {
762 info_popup [strcat \
763 [mc "No default branch obtained."] \
764 "\n" \
765 [mc "The 'master' branch has not been initialized."] \
766 ]
767 set done 1
768 return
769 }
770 if {[catch {
771 git update-ref HEAD $HEAD^0
772 } err]} {
773 info_popup [strcat \
774 [mc "Cannot resolve %s as a commit." $HEAD^0] \
775 "\n $err" \
776 "\n" \
777 [mc "The 'master' branch has not been initialized."] \
778 ]
779 set done 1
780 return
781 }
782 set o_cons [status_bar::two_line $w_body]
784 pack $w_body -fill x -padx 10 -pady 10
785 $o_cons start \
786 [mc "Creating working directory"] \
787 [mc "files"]
788 set readtree_err {}
790 set fd [git_read --stderr read-tree \
791 -m \
792 -u \
793 -v \
794 HEAD \
795 HEAD \
796 ]
797 fconfigure $fd -blocking 0 -translation binary
798 fileevent $fd readable [cb _readtree_wait $fd]
799}
800method _readtree_wait {fd} {
802 set buf [read $fd]
803 $o_cons update_meter $buf
804 append readtree_err $buf
805 fconfigure $fd -blocking 1
807 if {![eof $fd]} {
808 fconfigure $fd -blocking 0
809 return
810 }
811 if {[catch {close $fd}]} {
813 set err $readtree_err
814 regsub {^fatal: } $err {} err
815 error_popup [strcat \
816 [mc "Initial file checkout failed."] \
817 "\n\n$err"]
818 return
819 }
820 set done 1
822}
823######################################################################
825##
826## Open Existing Repository
827method _do_open {} {
829 $w_next conf \
830 -state disabled \
831 -command [cb _do_open2] \
832 -text [mc "Open"]
833 frame $w_body
835 label $w_body.h \
836 -font font_uibold \
837 -text [mc "Open Existing Repository"]
838 pack $w_body.h -side top -fill x -pady 10
839 pack $w_body -fill x -padx 10
840 frame $w_body.where
842 label $w_body.where.l -text [mc "Repository:"]
843 entry $w_body.where.t \
844 -textvariable @local_path \
845 -font font_diff \
846 -width 50
847 button $w_body.where.b \
848 -text [mc "Browse"] \
849 -command [cb _open_local_path]
850 pack $w_body.where.b -side right
852 pack $w_body.where.l -side left
853 pack $w_body.where.t -fill x
854 pack $w_body.where -fill x
855 trace add variable @local_path write [cb _write_local_path]
857 update
858 focus $w_body.where.t
859}
860method _open_local_path {} {
862 if {$local_path ne {}} {
863 set p $local_path
864 } else {
865 set p [_home]
866 }
867 set p [tk_chooseDirectory \
869 -initialdir $p \
870 -parent $top \
871 -title [mc "Git Repository"] \
872 -mustexist true]
873 if {$p eq {}} return
874 set p [file normalize $p]
876 if {![_is_git [file join $p .git]]} {
877 error_popup [mc "Not a Git repository: %s" [file tail $p]]
878 return
879 }
880 set local_path $p
881}
882method _do_open2 {} {
884 if {![_is_git [file join $local_path .git]]} {
885 error_popup [mc "Not a Git repository: %s" [file tail $local_path]]
886 return
887 }
888 if {[catch {cd $local_path} err]} {
890 error_popup [strcat \
891 [mc "Failed to open repository %s:" $local_path] \
892 "\n\n$err"]
893 return
894 }
895 set ::_gitdir .git
897 set ::_prefix {}
898 set done 1
899}
900}