git-gui/lib/choose_repository.tcl

   1 # git-gui Git repository chooser
   2 # Copyright (C) 2007 Shawn Pearce
   3
   4 class choose_repository {
   5
   6 field top
   7 field w
   8 field w_body      ; # Widget holding the center content
   9 field w_next      ; # Next button
  10 field w_quit      ; # Quit button
  11 field o_cons      ; # Console object (if active)
  12 field w_types     ; # List of type buttons in clone
  13 field w_recentlist ; # Listbox containing recent repositories
  14 field w_localpath  ; # Entry widget bound to local_path
  15
  16 field done              0 ; # Finished picking the repository?
  17 field local_path       {} ; # Where this repository is locally
  18 field origin_url       {} ; # Where we are cloning from
  19 field origin_name  origin ; # What we shall call 'origin'
  20 field clone_type hardlink ; # Type of clone to construct
  21 field readtree_err        ; # Error output from read-tree (if any)
  22 field sorted_recent       ; # recent repositories (sorted)
  23
  24 constructor pick {} {
  25         global M1T M1B
  26
  27         make_toplevel top w
  28         wm title $top [mc "Git Gui"]
  29
  30         if {$top eq {.}} {
  31                 menu $w.mbar -tearoff 0
  32                 $top configure -menu $w.mbar
  33
  34                 set m_repo $w.mbar.repository
  35                 $w.mbar add cascade \
  36                         -label [mc Repository] \
  37                         -menu $m_repo
  38                 menu $m_repo
  39
  40                 if {[is_MacOSX]} {
  41                         $w.mbar add cascade -label Apple -menu .mbar.apple
  42                         menu $w.mbar.apple
  43                         $w.mbar.apple add command \
  44                                 -label [mc "About %s" [appname]] \
  45                                 -command do_about
  46                         $w.mbar.apple add command \
  47                                 -label [mc "Show SSH Key"] \
  48                                 -command do_ssh_key
  49                 } else {
  50                         $w.mbar add cascade -label [mc Help] -menu $w.mbar.help
  51                         menu $w.mbar.help
  52                         $w.mbar.help add command \
  53                                 -label [mc "About %s" [appname]] \
  54                                 -command do_about
  55                         $w.mbar.help add command \
  56                                 -label [mc "Show SSH Key"] \
  57                                 -command do_ssh_key
  58                 }
  59
  60                 wm protocol $top WM_DELETE_WINDOW exit
  61                 bind $top <$M1B-q> exit
  62                 bind $top <$M1B-Q> exit
  63                 bind $top <Key-Escape> exit
  64         } else {
  65                 wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
  66                 bind $top <Key-Escape> [list destroy $top]
  67                 set m_repo {}
  68         }
  69
  70         pack [git_logo $w.git_logo] -side left -fill y -padx 10 -pady 10
  71
  72         set w_body $w.body
  73         set opts $w_body.options
  74         frame $w_body
  75         text $opts \
  76                 -cursor $::cursor_ptr \
  77                 -relief flat \
  78                 -background [$w_body cget -background] \
  79                 -wrap none \
  80                 -spacing1 5 \
  81                 -width 50 \
  82                 -height 3
  83         pack $opts -anchor w -fill x
  84
  85         $opts tag conf link_new -foreground blue -underline 1
  86         $opts tag bind link_new <1> [cb _next new]
  87         $opts insert end [mc "Create New Repository"] link_new
  88         $opts insert end "\n"
  89         if {$m_repo ne {}} {
  90                 $m_repo add command \
  91                         -command [cb _next new] \
  92                         -accelerator $M1T-N \
  93                         -label [mc "New..."]
  94                 bind $top <$M1B-n> [cb _next new]
  95                 bind $top <$M1B-N> [cb _next new]
  96         }
  97
  98         $opts tag conf link_clone -foreground blue -underline 1
  99         $opts tag bind link_clone <1> [cb _next clone]
 100         $opts insert end [mc "Clone Existing Repository"] link_clone
 101         $opts insert end "\n"
 102         if {$m_repo ne {}} {
 103                 $m_repo add command \
 104                         -command [cb _next clone] \
 105                         -accelerator $M1T-C \
 106                         -label [mc "Clone..."]
 107                 bind $top <$M1B-c> [cb _next clone]
 108                 bind $top <$M1B-C> [cb _next clone]
 109         }
 110
 111         $opts tag conf link_open -foreground blue -underline 1
 112         $opts tag bind link_open <1> [cb _next open]
 113         $opts insert end [mc "Open Existing Repository"] link_open
 114         $opts insert end "\n"
 115         if {$m_repo ne {}} {
 116                 $m_repo add command \
 117                         -command [cb _next open] \
 118                         -accelerator $M1T-O \
 119                         -label [mc "Open..."]
 120                 bind $top <$M1B-o> [cb _next open]
 121                 bind $top <$M1B-O> [cb _next open]
 122         }
 123
 124         $opts conf -state disabled
 125
 126         set sorted_recent [_get_recentrepos]
 127         if {[llength $sorted_recent] > 0} {
 128                 if {$m_repo ne {}} {
 129                         $m_repo add separator
 130                         $m_repo add command \
 131                                 -state disabled \
 132                                 -label [mc "Recent Repositories"]
 133                 }
 134
 135                 label $w_body.space
 136                 label $w_body.recentlabel \
 137                         -anchor w \
 138                         -text [mc "Open Recent Repository:"]
 139                 set w_recentlist $w_body.recentlist
 140                 text $w_recentlist \
 141                         -cursor $::cursor_ptr \
 142                         -relief flat \
 143                         -background [$w_body.recentlabel cget -background] \
 144                         -wrap none \
 145                         -width 50 \
 146                         -height 10
 147                 $w_recentlist tag conf link \
 148                         -foreground blue \
 149                         -underline 1
 150                 set home $::env(HOME)
 151                 if {[is_Cygwin]} {
 152                         set home [exec cygpath --windows --absolute $home]
 153                 }
 154                 set home "[file normalize $home]/"
 155                 set hlen [string length $home]
 156                 foreach p $sorted_recent {
 157                         set path $p
 158                         if {[string equal -length $hlen $home $p]} {
 159                                 set p "~/[string range $p $hlen end]"
 160                         }
 161                         regsub -all "\n" $p "\\n" p
 162                         $w_recentlist insert end $p link
 163                         $w_recentlist insert end "\n"
 164
 165                         if {$m_repo ne {}} {
 166                                 $m_repo add command \
 167                                         -command [cb _open_recent_path $path] \
 168                                         -label "    $p"
 169                         }
 170                 }
 171                 $w_recentlist conf -state disabled
 172                 $w_recentlist tag bind link <1> [cb _open_recent %x,%y]
 173                 pack $w_body.space -anchor w -fill x
 174                 pack $w_body.recentlabel -anchor w -fill x
 175                 pack $w_recentlist -anchor w -fill x
 176         }
 177         pack $w_body -fill x -padx 10 -pady 10
 178
 179         frame $w.buttons
 180         set w_next $w.buttons.next
 181         set w_quit $w.buttons.quit
 182         button $w_quit \
 183                 -text [mc "Quit"] \
 184                 -command exit
 185         pack $w_quit -side right -padx 5
 186         pack $w.buttons -side bottom -fill x -padx 10 -pady 10
 187
 188         if {$m_repo ne {}} {
 189                 $m_repo add separator
 190                 $m_repo add command \
 191                         -label [mc Quit] \
 192                         -command exit \
 193                         -accelerator $M1T-Q
 194         }
 195
 196         bind $top <Return> [cb _invoke_next]
 197         bind $top <Visibility> "
 198                 [cb _center]
 199                 grab $top
 200                 focus $top
 201                 bind $top <Visibility> {}
 202         "
 203         wm deiconify $top
 204         tkwait variable @done
 205
 206         if {$top eq {.}} {
 207                 eval destroy [winfo children $top]
 208         }
 209 }
 210
 211 proc _home {} {
 212         if {[catch {set h $::env(HOME)}]
 213                 || ![file isdirectory $h]} {
 214                 set h .
 215         }
 216         return $h
 217 }
 218
 219 method _center {} {
 220         set nx [winfo reqwidth $top]
 221         set ny [winfo reqheight $top]
 222         set rx [expr {([winfo screenwidth  $top] - $nx) / 3}]
 223         set ry [expr {([winfo screenheight $top] - $ny) / 3}]
 224         wm geometry $top [format {+%d+%d} $rx $ry]
 225 }
 226
 227 method _invoke_next {} {
 228         if {[winfo exists $w_next]} {
 229                 uplevel #0 [$w_next cget -command]
 230         }
 231 }
 232
 233 proc _get_recentrepos {} {
 234         set recent [list]
 235         foreach p [get_config gui.recentrepo] {
 236                 if {[_is_git [file join $p .git]]} {
 237                         lappend recent $p
 238                 }
 239         }
 240         return [lsort $recent]
 241 }
 242
 243 proc _unset_recentrepo {p} {
 244         regsub -all -- {([()\[\]{}\.^$+*?\\])} $p {\\\1} p
 245         git config --global --unset gui.recentrepo "^$p\$"
 246 }
 247
 248 proc _append_recentrepos {path} {
 249         set path [file normalize $path]
 250         set recent [get_config gui.recentrepo]
 251
 252         if {[lindex $recent end] eq $path} {
 253                 return
 254         }
 255
 256         set i [lsearch $recent $path]
 257         if {$i >= 0} {
 258                 _unset_recentrepo $path
 259                 set recent [lreplace $recent $i $i]
 260         }
 261
 262         lappend recent $path
 263         git config --global --add gui.recentrepo $path
 264
 265         while {[llength $recent] > 10} {
 266                 _unset_recentrepo [lindex $recent 0]
 267                 set recent [lrange $recent 1 end]
 268         }
 269 }
 270
 271 method _open_recent {xy} {
 272         set id [lindex [split [$w_recentlist index @$xy] .] 0]
 273         set local_path [lindex $sorted_recent [expr {$id - 1}]]
 274         _do_open2 $this
 275 }
 276
 277 method _open_recent_path {p} {
 278         set local_path $p
 279         _do_open2 $this
 280 }
 281
 282 method _next {action} {
 283         destroy $w_body
 284         if {![winfo exists $w_next]} {
 285                 button $w_next -default active
 286                 pack $w_next -side right -padx 5 -before $w_quit
 287         }
 288         _do_$action $this
 289 }
 290
 291 method _write_local_path {args} {
 292         if {$local_path eq {}} {
 293                 $w_next conf -state disabled
 294         } else {
 295                 $w_next conf -state normal
 296         }
 297 }
 298
 299 method _git_init {} {
 300         if {[catch {file mkdir $local_path} err]} {
 301                 error_popup [strcat \
 302                         [mc "Failed to create repository %s:" $local_path] \
 303                         "\n\n$err"]
 304                 return 0
 305         }
 306
 307         if {[catch {cd $local_path} err]} {
 308                 error_popup [strcat \
 309                         [mc "Failed to create repository %s:" $local_path] \
 310                         "\n\n$err"]
 311                 return 0
 312         }
 313
 314         if {[catch {git init} err]} {
 315                 error_popup [strcat \
 316                         [mc "Failed to create repository %s:" $local_path] \
 317                         "\n\n$err"]
 318                 return 0
 319         }
 320
 321         _append_recentrepos [pwd]
 322         set ::_gitdir .git
 323         set ::_prefix {}
 324         return 1
 325 }
 326
 327 proc _is_git {path} {
 328         if {[file exists [file join $path HEAD]]
 329          && [file exists [file join $path objects]]
 330          && [file exists [file join $path config]]} {
 331                 return 1
 332         }
 333         if {[is_Cygwin]} {
 334                 if {[file exists [file join $path HEAD]]
 335                  && [file exists [file join $path objects.lnk]]
 336                  && [file exists [file join $path config.lnk]]} {
 337                         return 1
 338                 }
 339         }
 340         return 0
 341 }
 342
 343 proc _objdir {path} {
 344         set objdir [file join $path .git objects]
 345         if {[file isdirectory $objdir]} {
 346                 return $objdir
 347         }
 348
 349         set objdir [file join $path objects]
 350         if {[file isdirectory $objdir]} {
 351                 return $objdir
 352         }
 353
 354         if {[is_Cygwin]} {
 355                 set objdir [file join $path .git objects.lnk]
 356                 if {[file isfile $objdir]} {
 357                         return [win32_read_lnk $objdir]
 358                 }
 359
 360                 set objdir [file join $path objects.lnk]
 361                 if {[file isfile $objdir]} {
 362                         return [win32_read_lnk $objdir]
 363                 }
 364         }
 365
 366         return {}
 367 }
 368
 369 ######################################################################
 370 ##
 371 ## Create New Repository
 372
 373 method _do_new {} {
 374         $w_next conf \
 375                 -state disabled \
 376                 -command [cb _do_new2] \
 377                 -text [mc "Create"]
 378
 379         frame $w_body
 380         label $w_body.h \
 381                 -font font_uibold \
 382                 -text [mc "Create New Repository"]
 383         pack $w_body.h -side top -fill x -pady 10
 384         pack $w_body -fill x -padx 10
 385
 386         frame $w_body.where
 387         label $w_body.where.l -text [mc "Directory:"]
 388         entry $w_body.where.t \
 389                 -textvariable @local_path \
 390                 -borderwidth 1 \
 391                 -relief sunken \
 392                 -width 50
 393         button $w_body.where.b \
 394                 -text [mc "Browse"] \
 395                 -command [cb _new_local_path]
 396         set w_localpath $w_body.where.t
 397
 398         grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
 399         pack $w_body.where -fill x
 400
 401         trace add variable @local_path write [cb _write_local_path]
 402         bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
 403         update
 404         focus $w_body.where.t
 405 }
 406
 407 method _new_local_path {} {
 408         if {$local_path ne {}} {
 409                 set p [file dirname $local_path]
 410         } else {
 411                 set p [_home]
 412         }
 413
 414         set p [tk_chooseDirectory \
 415                 -initialdir $p \
 416                 -parent $top \
 417                 -title [mc "Git Repository"] \
 418                 -mustexist false]
 419         if {$p eq {}} return
 420
 421         set p [file normalize $p]
 422         if {![_new_ok $p]} {
 423                 return
 424         }
 425         set local_path $p
 426         $w_localpath icursor end
 427 }
 428
 429 method _do_new2 {} {
 430         if {![_new_ok $local_path]} {
 431                 return
 432         }
 433         if {![_git_init $this]} {
 434                 return
 435         }
 436         set done 1
 437 }
 438
 439 proc _new_ok {p} {
 440         if {[file isdirectory $p]} {
 441                 if {[_is_git [file join $p .git]]} {
 442                         error_popup [mc "Directory %s already exists." $p]
 443                         return 0
 444                 }
 445         } elseif {[file exists $p]} {
 446                 error_popup [mc "File %s already exists." $p]
 447                 return 0
 448         }
 449         return 1
 450 }
 451
 452 ######################################################################
 453 ##
 454 ## Clone Existing Repository
 455
 456 method _do_clone {} {
 457         $w_next conf \
 458                 -state disabled \
 459                 -command [cb _do_clone2] \
 460                 -text [mc "Clone"]
 461
 462         frame $w_body
 463         label $w_body.h \
 464                 -font font_uibold \
 465                 -text [mc "Clone Existing Repository"]
 466         pack $w_body.h -side top -fill x -pady 10
 467         pack $w_body -fill x -padx 10
 468
 469         set args $w_body.args
 470         frame $w_body.args
 471         pack $args -fill both
 472
 473         label $args.origin_l -text [mc "Source Location:"]
 474         entry $args.origin_t \
 475                 -textvariable @origin_url \
 476                 -borderwidth 1 \
 477                 -relief sunken \
 478                 -width 50
 479         button $args.origin_b \
 480                 -text [mc "Browse"] \
 481                 -command [cb _open_origin]
 482         grid $args.origin_l $args.origin_t $args.origin_b -sticky ew
 483
 484         label $args.where_l -text [mc "Target Directory:"]
 485         entry $args.where_t \
 486                 -textvariable @local_path \
 487                 -borderwidth 1 \
 488                 -relief sunken \
 489                 -width 50
 490         button $args.where_b \
 491                 -text [mc "Browse"] \
 492                 -command [cb _new_local_path]
 493         grid $args.where_l $args.where_t $args.where_b -sticky ew
 494         set w_localpath $args.where_t
 495
 496         label $args.type_l -text [mc "Clone Type:"]
 497         frame $args.type_f
 498         set w_types [list]
 499         lappend w_types [radiobutton $args.type_f.hardlink \
 500                 -state disabled \
 501                 -anchor w \
 502                 -text [mc "Standard (Fast, Semi-Redundant, Hardlinks)"] \
 503                 -variable @clone_type \
 504                 -value hardlink]
 505         lappend w_types [radiobutton $args.type_f.full \
 506                 -state disabled \
 507                 -anchor w \
 508                 -text [mc "Full Copy (Slower, Redundant Backup)"] \
 509                 -variable @clone_type \
 510                 -value full]
 511         lappend w_types [radiobutton $args.type_f.shared \
 512                 -state disabled \
 513                 -anchor w \
 514                 -text [mc "Shared (Fastest, Not Recommended, No Backup)"] \
 515                 -variable @clone_type \
 516                 -value shared]
 517         foreach r $w_types {
 518                 pack $r -anchor w
 519         }
 520         grid $args.type_l $args.type_f -sticky new
 521
 522         grid columnconfigure $args 1 -weight 1
 523
 524         trace add variable @local_path write [cb _update_clone]
 525         trace add variable @origin_url write [cb _update_clone]
 526         bind $w_body.h <Destroy> "
 527                 [list trace remove variable @local_path write [cb _update_clone]]
 528                 [list trace remove variable @origin_url write [cb _update_clone]]
 529         "
 530         update
 531         focus $args.origin_t
 532 }
 533
 534 method _open_origin {} {
 535         if {$origin_url ne {} && [file isdirectory $origin_url]} {
 536                 set p $origin_url
 537         } else {
 538                 set p [_home]
 539         }
 540
 541         set p [tk_chooseDirectory \
 542                 -initialdir $p \
 543                 -parent $top \
 544                 -title [mc "Git Repository"] \
 545                 -mustexist true]
 546         if {$p eq {}} return
 547
 548         set p [file normalize $p]
 549         if {![_is_git [file join $p .git]] && ![_is_git $p]} {
 550                 error_popup [mc "Not a Git repository: %s" [file tail $p]]
 551                 return
 552         }
 553         set origin_url $p
 554 }
 555
 556 method _update_clone {args} {
 557         if {$local_path ne {} && $origin_url ne {}} {
 558                 $w_next conf -state normal
 559         } else {
 560                 $w_next conf -state disabled
 561         }
 562
 563         if {$origin_url ne {} &&
 564                 (  [_is_git [file join $origin_url .git]]
 565                 || [_is_git $origin_url])} {
 566                 set e normal
 567                 if {[[lindex $w_types 0] cget -state] eq {disabled}} {
 568                         set clone_type hardlink
 569                 }
 570         } else {
 571                 set e disabled
 572                 set clone_type full
 573         }
 574
 575         foreach r $w_types {
 576                 $r conf -state $e
 577         }
 578 }
 579
 580 method _do_clone2 {} {
 581         if {[file isdirectory $origin_url]} {
 582                 set origin_url [file normalize $origin_url]
 583         }
 584
 585         if {$clone_type eq {hardlink} && ![file isdirectory $origin_url]} {
 586                 error_popup [mc "Standard only available for local repository."]
 587                 return
 588         }
 589         if {$clone_type eq {shared} && ![file isdirectory $origin_url]} {
 590                 error_popup [mc "Shared only available for local repository."]
 591                 return
 592         }
 593
 594         if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 595                 set objdir [_objdir $origin_url]
 596                 if {$objdir eq {}} {
 597                         error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 598                         return
 599                 }
 600         }
 601
 602         set giturl $origin_url
 603         if {[is_Cygwin] && [file isdirectory $giturl]} {
 604                 set giturl [exec cygpath --unix --absolute $giturl]
 605                 if {$clone_type eq {shared}} {
 606                         set objdir [exec cygpath --unix --absolute $objdir]
 607                 }
 608         }
 609
 610         if {[file exists $local_path]} {
 611                 error_popup [mc "Location %s already exists." $local_path]
 612                 return
 613         }
 614
 615         if {![_git_init $this]} return
 616         set local_path [pwd]
 617
 618         if {[catch {
 619                         git config remote.$origin_name.url $giturl
 620                         git config remote.$origin_name.fetch +refs/heads/*:refs/remotes/$origin_name/*
 621                 } err]} {
 622                 error_popup [strcat [mc "Failed to configure origin"] "\n\n$err"]
 623                 return
 624         }
 625
 626         destroy $w_body $w_next
 627
 628         switch -exact -- $clone_type {
 629         hardlink {
 630                 set o_cons [status_bar::two_line $w_body]
 631                 pack $w_body -fill x -padx 10 -pady 10
 632
 633                 $o_cons start \
 634                         [mc "Counting objects"] \
 635                         [mc "buckets"]
 636                 update
 637
 638                 if {[file exists [file join $objdir info alternates]]} {
 639                         set pwd [pwd]
 640                         if {[catch {
 641                                 file mkdir [gitdir objects info]
 642                                 set f_in [open [file join $objdir info alternates] r]
 643                                 set f_cp [open [gitdir objects info alternates] w]
 644                                 fconfigure $f_in -translation binary -encoding binary
 645                                 fconfigure $f_cp -translation binary -encoding binary
 646                                 cd $objdir
 647                                 while {[gets $f_in line] >= 0} {
 648                                         if {[is_Cygwin]} {
 649                                                 puts $f_cp [exec cygpath --unix --absolute $line]
 650                                         } else {
 651                                                 puts $f_cp [file normalize $line]
 652                                         }
 653                                 }
 654                                 close $f_in
 655                                 close $f_cp
 656                                 cd $pwd
 657                         } err]} {
 658                                 catch {cd $pwd}
 659                                 _clone_failed $this [mc "Unable to copy objects/info/alternates: %s" $err]
 660                                 return
 661                         }
 662                 }
 663
 664                 set tolink  [list]
 665                 set buckets [glob \
 666                         -tails \
 667                         -nocomplain \
 668                         -directory [file join $objdir] ??]
 669                 set bcnt [expr {[llength $buckets] + 2}]
 670                 set bcur 1
 671                 $o_cons update $bcur $bcnt
 672                 update
 673
 674                 file mkdir [file join .git objects pack]
 675                 foreach i [glob -tails -nocomplain \
 676                         -directory [file join $objdir pack] *] {
 677                         lappend tolink [file join pack $i]
 678                 }
 679                 $o_cons update [incr bcur] $bcnt
 680                 update
 681
 682                 foreach i $buckets {
 683                         file mkdir [file join .git objects $i]
 684                         foreach j [glob -tails -nocomplain \
 685                                 -directory [file join $objdir $i] *] {
 686                                 lappend tolink [file join $i $j]
 687                         }
 688                         $o_cons update [incr bcur] $bcnt
 689                         update
 690                 }
 691                 $o_cons stop
 692
 693                 if {$tolink eq {}} {
 694                         info_popup [strcat \
 695                                 [mc "Nothing to clone from %s." $origin_url] \
 696                                 "\n" \
 697                                 [mc "The 'master' branch has not been initialized."] \
 698                                 ]
 699                         destroy $w_body
 700                         set done 1
 701                         return
 702                 }
 703
 704                 set i [lindex $tolink 0]
 705                 if {[catch {
 706                                 file link -hard \
 707                                         [file join .git objects $i] \
 708                                         [file join $objdir $i]
 709                         } err]} {
 710                         info_popup [mc "Hardlinks are unavailable.  Falling back to copying."]
 711                         set i [_copy_files $this $objdir $tolink]
 712                 } else {
 713                         set i [_link_files $this $objdir [lrange $tolink 1 end]]
 714                 }
 715                 if {!$i} return
 716
 717                 destroy $w_body
 718         }
 719         full {
 720                 set o_cons [console::embed \
 721                         $w_body \
 722                         [mc "Cloning from %s" $origin_url]]
 723                 pack $w_body -fill both -expand 1 -padx 10
 724                 $o_cons exec \
 725                         [list git fetch --no-tags -k $origin_name] \
 726                         [cb _do_clone_tags]
 727         }
 728         shared {
 729                 set fd [open [gitdir objects info alternates] w]
 730                 fconfigure $fd -translation binary
 731                 puts $fd $objdir
 732                 close $fd
 733         }
 734         }
 735
 736         if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 737                 if {![_clone_refs $this]} return
 738                 set pwd [pwd]
 739                 if {[catch {
 740                                 cd $origin_url
 741                                 set HEAD [git rev-parse --verify HEAD^0]
 742                         } err]} {
 743                         _clone_failed $this [mc "Not a Git repository: %s" [file tail $origin_url]]
 744                         return 0
 745                 }
 746                 cd $pwd
 747                 _do_clone_checkout $this $HEAD
 748         }
 749 }
 750
 751 method _copy_files {objdir tocopy} {
 752         $o_cons start \
 753                 [mc "Copying objects"] \
 754                 [mc "KiB"]
 755         set tot 0
 756         set cmp 0
 757         foreach p $tocopy {
 758                 incr tot [file size [file join $objdir $p]]
 759         }
 760         foreach p $tocopy {
 761                 if {[catch {
 762                                 set f_in [open [file join $objdir $p] r]
 763                                 set f_cp [open [file join .git objects $p] w]
 764                                 fconfigure $f_in -translation binary -encoding binary
 765                                 fconfigure $f_cp -translation binary -encoding binary
 766
 767                                 while {![eof $f_in]} {
 768                                         incr cmp [fcopy $f_in $f_cp -size 16384]
 769                                         $o_cons update \
 770                                                 [expr {$cmp / 1024}] \
 771                                                 [expr {$tot / 1024}]
 772                                         update
 773                                 }
 774
 775                                 close $f_in
 776                                 close $f_cp
 777                         } err]} {
 778                         _clone_failed $this [mc "Unable to copy object: %s" $err]
 779                         return 0
 780                 }
 781         }
 782         return 1
 783 }
 784
 785 method _link_files {objdir tolink} {
 786         set total [llength $tolink]
 787         $o_cons start \
 788                 [mc "Linking objects"] \
 789                 [mc "objects"]
 790         for {set i 0} {$i < $total} {} {
 791                 set p [lindex $tolink $i]
 792                 if {[catch {
 793                                 file link -hard \
 794                                         [file join .git objects $p] \
 795                                         [file join $objdir $p]
 796                         } err]} {
 797                         _clone_failed $this [mc "Unable to hardlink object: %s" $err]
 798                         return 0
 799                 }
 800
 801                 incr i
 802                 if {$i % 5 == 0} {
 803                         $o_cons update $i $total
 804                         update
 805                 }
 806         }
 807         return 1
 808 }
 809
 810 method _clone_refs {} {
 811         set pwd [pwd]
 812         if {[catch {cd $origin_url} err]} {
 813                 error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 814                 return 0
 815         }
 816         set fd_in [git_read for-each-ref \
 817                 --tcl \
 818                 {--format=list %(refname) %(objectname) %(*objectname)}]
 819         cd $pwd
 820
 821         set fd [open [gitdir packed-refs] w]
 822         fconfigure $fd -translation binary
 823         puts $fd "# pack-refs with: peeled"
 824         while {[gets $fd_in line] >= 0} {
 825                 set line [eval $line]
 826                 set refn [lindex $line 0]
 827                 set robj [lindex $line 1]
 828                 set tobj [lindex $line 2]
 829
 830                 if {[regsub ^refs/heads/ $refn \
 831                         "refs/remotes/$origin_name/" refn]} {
 832                         puts $fd "$robj $refn"
 833                 } elseif {[string match refs/tags/* $refn]} {
 834                         puts $fd "$robj $refn"
 835                         if {$tobj ne {}} {
 836                                 puts $fd "^$tobj"
 837                         }
 838                 }
 839         }
 840         close $fd_in
 841         close $fd
 842         return 1
 843 }
 844
 845 method _do_clone_tags {ok} {
 846         if {$ok} {
 847                 $o_cons exec \
 848                         [list git fetch --tags -k $origin_name] \
 849                         [cb _do_clone_HEAD]
 850         } else {
 851                 $o_cons done $ok
 852                 _clone_failed $this [mc "Cannot fetch branches and objects.  See console output for details."]
 853         }
 854 }
 855
 856 method _do_clone_HEAD {ok} {
 857         if {$ok} {
 858                 $o_cons exec \
 859                         [list git fetch $origin_name HEAD] \
 860                         [cb _do_clone_full_end]
 861         } else {
 862                 $o_cons done $ok
 863                 _clone_failed $this [mc "Cannot fetch tags.  See console output for details."]
 864         }
 865 }
 866
 867 method _do_clone_full_end {ok} {
 868         $o_cons done $ok
 869
 870         if {$ok} {
 871                 destroy $w_body
 872
 873                 set HEAD {}
 874                 if {[file exists [gitdir FETCH_HEAD]]} {
 875                         set fd [open [gitdir FETCH_HEAD] r]
 876                         while {[gets $fd line] >= 0} {
 877                                 if {[regexp "^(.{40})\t\t" $line line HEAD]} {
 878                                         break
 879                                 }
 880                         }
 881                         close $fd
 882                 }
 883
 884                 catch {git pack-refs}
 885                 _do_clone_checkout $this $HEAD
 886         } else {
 887                 _clone_failed $this [mc "Cannot determine HEAD.  See console output for details."]
 888         }
 889 }
 890
 891 method _clone_failed {{why {}}} {
 892         if {[catch {file delete -force $local_path} err]} {
 893                 set why [strcat \
 894                         $why \
 895                         "\n\n" \
 896                         [mc "Unable to cleanup %s" $local_path] \
 897                         "\n\n" \
 898                         $err]
 899         }
 900         if {$why ne {}} {
 901                 update
 902                 error_popup [strcat [mc "Clone failed."] "\n" $why]
 903         }
 904 }
 905
 906 method _do_clone_checkout {HEAD} {
 907         if {$HEAD eq {}} {
 908                 info_popup [strcat \
 909                         [mc "No default branch obtained."] \
 910                         "\n" \
 911                         [mc "The 'master' branch has not been initialized."] \
 912                         ]
 913                 set done 1
 914                 return
 915         }
 916         if {[catch {
 917                         git update-ref HEAD $HEAD^0
 918                 } err]} {
 919                 info_popup [strcat \
 920                         [mc "Cannot resolve %s as a commit." $HEAD^0] \
 921                         "\n  $err" \
 922                         "\n" \
 923                         [mc "The 'master' branch has not been initialized."] \
 924                         ]
 925                 set done 1
 926                 return
 927         }
 928
 929         set o_cons [status_bar::two_line $w_body]
 930         pack $w_body -fill x -padx 10 -pady 10
 931         $o_cons start \
 932                 [mc "Creating working directory"] \
 933                 [mc "files"]
 934
 935         set readtree_err {}
 936         set fd [git_read --stderr read-tree \
 937                 -m \
 938                 -u \
 939                 -v \
 940                 HEAD \
 941                 HEAD \
 942                 ]
 943         fconfigure $fd -blocking 0 -translation binary
 944         fileevent $fd readable [cb _readtree_wait $fd]
 945 }
 946
 947 method _readtree_wait {fd} {
 948         set buf [read $fd]
 949         $o_cons update_meter $buf
 950         append readtree_err $buf
 951
 952         fconfigure $fd -blocking 1
 953         if {![eof $fd]} {
 954                 fconfigure $fd -blocking 0
 955                 return
 956         }
 957
 958         if {[catch {close $fd}]} {
 959                 set err $readtree_err
 960                 regsub {^fatal: } $err {} err
 961                 error_popup [strcat \
 962                         [mc "Initial file checkout failed."] \
 963                         "\n\n$err"]
 964                 return
 965         }
 966
 967         set done 1
 968 }
 969
 970 ######################################################################
 971 ##
 972 ## Open Existing Repository
 973
 974 method _do_open {} {
 975         $w_next conf \
 976                 -state disabled \
 977                 -command [cb _do_open2] \
 978                 -text [mc "Open"]
 979
 980         frame $w_body
 981         label $w_body.h \
 982                 -font font_uibold \
 983                 -text [mc "Open Existing Repository"]
 984         pack $w_body.h -side top -fill x -pady 10
 985         pack $w_body -fill x -padx 10
 986
 987         frame $w_body.where
 988         label $w_body.where.l -text [mc "Repository:"]
 989         entry $w_body.where.t \
 990                 -textvariable @local_path \
 991                 -borderwidth 1 \
 992                 -relief sunken \
 993                 -width 50
 994         button $w_body.where.b \
 995                 -text [mc "Browse"] \
 996                 -command [cb _open_local_path]
 997
 998         grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
 999         pack $w_body.where -fill x
1000
1001         trace add variable @local_path write [cb _write_local_path]
1002         bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
1003         update
1004         focus $w_body.where.t
1005 }
1006
1007 method _open_local_path {} {
1008         if {$local_path ne {}} {
1009                 set p $local_path
1010         } else {
1011                 set p [_home]
1012         }
1013
1014         set p [tk_chooseDirectory \
1015                 -initialdir $p \
1016                 -parent $top \
1017                 -title [mc "Git Repository"] \
1018                 -mustexist true]
1019         if {$p eq {}} return
1020
1021         set p [file normalize $p]
1022         if {![_is_git [file join $p .git]]} {
1023                 error_popup [mc "Not a Git repository: %s" [file tail $p]]
1024                 return
1025         }
1026         set local_path $p
1027 }
1028
1029 method _do_open2 {} {
1030         if {![_is_git [file join $local_path .git]]} {
1031                 error_popup [mc "Not a Git repository: %s" [file tail $local_path]]
1032                 return
1033         }
1034
1035         if {[catch {cd $local_path} err]} {
1036                 error_popup [strcat \
1037                         [mc "Failed to open repository %s:" $local_path] \
1038                         "\n\n$err"]
1039                 return
1040         }
1041
1042         _append_recentrepos [pwd]
1043         set ::_gitdir .git
1044         set ::_prefix {}
1045         set done 1
1046 }
1047
1048 }