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