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