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