Andrew's git / gitweb.git / git-gui/lib/choose_repository.tcl
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git-gui / lib / choose_repository.tclon commit Merge branch 'maint' (01ddb1f)
   1# git-gui Git repository chooser
   2# Copyright (C) 2007 Shawn Pearce
   3
   4class choose_repository {
   5
   6field top
   7field w
   8field w_body      ; # Widget holding the center content
   9field w_next      ; # Next button
  10field w_quit      ; # Quit button
  11field o_cons      ; # Console object (if active)
  12field w_types     ; # List of type buttons in clone
  13field w_recentlist ; # Listbox containing recent repositories
  14field w_localpath  ; # Entry widget bound to local_path
  15
  16field done              0 ; # Finished picking the repository?
  17field local_path       {} ; # Where this repository is locally
  18field origin_url       {} ; # Where we are cloning from
  19field origin_name  origin ; # What we shall call 'origin'
  20field clone_type hardlink ; # Type of clone to construct
  21field readtree_err        ; # Error output from read-tree (if any)
  22field sorted_recent       ; # recent repositories (sorted)
  23
  24constructor pick {} {
  25        global M1T M1B
  26
  27        make_toplevel top w
  28        wm title $top [mc "Git Gui"]
  29
  30        if {$top eq {.}} {
  31                menu $w.mbar -tearoff 0
  32                $top configure -menu $w.mbar
  33
  34                set m_repo $w.mbar.repository
  35                $w.mbar add cascade \
  36                        -label [mc Repository] \
  37                        -menu $m_repo
  38                menu $m_repo
  39
  40                if {[is_MacOSX]} {
  41                        $w.mbar add cascade -label Apple -menu .mbar.apple
  42                        menu $w.mbar.apple
  43                        $w.mbar.apple add command \
  44                                -label [mc "About %s" [appname]] \
  45                                -command do_about
  46                        $w.mbar.apple add command \
  47                                -label [mc "Show SSH Key"] \
  48                                -command do_ssh_key
  49                } else {
  50                        $w.mbar add cascade -label [mc Help] -menu $w.mbar.help
  51                        menu $w.mbar.help
  52                        $w.mbar.help add command \
  53                                -label [mc "About %s" [appname]] \
  54                                -command do_about
  55                        $w.mbar.help add command \
  56                                -label [mc "Show SSH Key"] \
  57                                -command do_ssh_key
  58                }
  59
  60                wm protocol $top WM_DELETE_WINDOW exit
  61                bind $top <$M1B-q> exit
  62                bind $top <$M1B-Q> exit
  63                bind $top <Key-Escape> exit
  64        } else {
  65                wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
  66                bind $top <Key-Escape> [list destroy $top]
  67                set m_repo {}
  68        }
  69
  70        pack [git_logo $w.git_logo] -side left -fill y -padx 10 -pady 10
  71
  72        set w_body $w.body
  73        set opts $w_body.options
  74        frame $w_body
  75        text $opts \
  76                -cursor $::cursor_ptr \
  77                -relief flat \
  78                -background [$w_body cget -background] \
  79                -wrap none \
  80                -spacing1 5 \
  81                -width 50 \
  82                -height 3
  83        pack $opts -anchor w -fill x
  84
  85        $opts tag conf link_new -foreground blue -underline 1
  86        $opts tag bind link_new <1> [cb _next new]
  87        $opts insert end [mc "Create New Repository"] link_new
  88        $opts insert end "\n"
  89        if {$m_repo ne {}} {
  90                $m_repo add command \
  91                        -command [cb _next new] \
  92                        -accelerator $M1T-N \
  93                        -label [mc "New..."]
  94                bind $top <$M1B-n> [cb _next new]
  95                bind $top <$M1B-N> [cb _next new]
  96        }
  97
  98        $opts tag conf link_clone -foreground blue -underline 1
  99        $opts tag bind link_clone <1> [cb _next clone]
 100        $opts insert end [mc "Clone Existing Repository"] link_clone
 101        $opts insert end "\n"
 102        if {$m_repo ne {}} {
 103                $m_repo add command \
 104                        -command [cb _next clone] \
 105                        -accelerator $M1T-C \
 106                        -label [mc "Clone..."]
 107                bind $top <$M1B-c> [cb _next clone]
 108                bind $top <$M1B-C> [cb _next clone]
 109        }
 110
 111        $opts tag conf link_open -foreground blue -underline 1
 112        $opts tag bind link_open <1> [cb _next open]
 113        $opts insert end [mc "Open Existing Repository"] link_open
 114        $opts insert end "\n"
 115        if {$m_repo ne {}} {
 116                $m_repo add command \
 117                        -command [cb _next open] \
 118                        -accelerator $M1T-O \
 119                        -label [mc "Open..."]
 120                bind $top <$M1B-o> [cb _next open]
 121                bind $top <$M1B-O> [cb _next open]
 122        }
 123
 124        $opts conf -state disabled
 125
 126        set sorted_recent [_get_recentrepos]
 127        if {[llength $sorted_recent] > 0} {
 128                if {$m_repo ne {}} {
 129                        $m_repo add separator
 130                        $m_repo add command \
 131                                -state disabled \
 132                                -label [mc "Recent Repositories"]
 133                }
 134
 135                label $w_body.space
 136                label $w_body.recentlabel \
 137                        -anchor w \
 138                        -text [mc "Open Recent Repository:"]
 139                set w_recentlist $w_body.recentlist
 140                text $w_recentlist \
 141                        -cursor $::cursor_ptr \
 142                        -relief flat \
 143                        -background [$w_body.recentlabel cget -background] \
 144                        -wrap none \
 145                        -width 50 \
 146                        -height 10
 147                $w_recentlist tag conf link \
 148                        -foreground blue \
 149                        -underline 1
 150                set home $::env(HOME)
 151                if {[is_Cygwin]} {
 152                        set home [exec cygpath --windows --absolute $home]
 153                }
 154                set home "[file normalize $home]/"
 155                set hlen [string length $home]
 156                foreach p $sorted_recent {
 157                        set path $p
 158                        if {[string equal -length $hlen $home $p]} {
 159                                set p "~/[string range $p $hlen end]"
 160                        }
 161                        regsub -all "\n" $p "\\n" p
 162                        $w_recentlist insert end $p link
 163                        $w_recentlist insert end "\n"
 164
 165                        if {$m_repo ne {}} {
 166                                $m_repo add command \
 167                                        -command [cb _open_recent_path $path] \
 168                                        -label "    $p"
 169                        }
 170                }
 171                $w_recentlist conf -state disabled
 172                $w_recentlist tag bind link <1> [cb _open_recent %x,%y]
 173                pack $w_body.space -anchor w -fill x
 174                pack $w_body.recentlabel -anchor w -fill x
 175                pack $w_recentlist -anchor w -fill x
 176        }
 177        pack $w_body -fill x -padx 10 -pady 10
 178
 179        frame $w.buttons
 180        set w_next $w.buttons.next
 181        set w_quit $w.buttons.quit
 182        button $w_quit \
 183                -text [mc "Quit"] \
 184                -command exit
 185        pack $w_quit -side right -padx 5
 186        pack $w.buttons -side bottom -fill x -padx 10 -pady 10
 187
 188        if {$m_repo ne {}} {
 189                $m_repo add separator
 190                $m_repo add command \
 191                        -label [mc Quit] \
 192                        -command exit \
 193                        -accelerator $M1T-Q
 194        }
 195
 196        bind $top <Return> [cb _invoke_next]
 197        bind $top <Visibility> "
 198                [cb _center]
 199                grab $top
 200                focus $top
 201                bind $top <Visibility> {}
 202        "
 203        wm deiconify $top
 204        tkwait variable @done
 205
 206        if {$top eq {.}} {
 207                eval destroy [winfo children $top]
 208        }
 209}
 210
 211proc _home {} {
 212        if {[catch {set h $::env(HOME)}]
 213                || ![file isdirectory $h]} {
 214                set h .
 215        }
 216        return $h
 217}
 218
 219method _center {} {
 220        set nx [winfo reqwidth $top]
 221        set ny [winfo reqheight $top]
 222        set rx [expr {([winfo screenwidth  $top] - $nx) / 3}]
 223        set ry [expr {([winfo screenheight $top] - $ny) / 3}]
 224        wm geometry $top [format {+%d+%d} $rx $ry]
 225}
 226
 227method _invoke_next {} {
 228        if {[winfo exists $w_next]} {
 229                uplevel #0 [$w_next cget -command]
 230        }
 231}
 232
 233proc _get_recentrepos {} {
 234        set recent [list]
 235        foreach p [get_config gui.recentrepo] {
 236                if {[_is_git [file join $p .git]]} {
 237                        lappend recent $p
 238                } else {
 239                        _unset_recentrepo $p
 240                }
 241        }
 242        return [lsort $recent]
 243}
 244
 245proc _unset_recentrepo {p} {
 246        regsub -all -- {([()\[\]{}\.^$+*?\\])} $p {\\\1} p
 247        git config --global --unset gui.recentrepo "^$p\$"
 248        load_config 1
 249}
 250
 251proc _append_recentrepos {path} {
 252        set path [file normalize $path]
 253        set recent [get_config gui.recentrepo]
 254
 255        if {[lindex $recent end] eq $path} {
 256                return
 257        }
 258
 259        set i [lsearch $recent $path]
 260        if {$i >= 0} {
 261                _unset_recentrepo $path
 262                set recent [lreplace $recent $i $i]
 263        }
 264
 265        lappend recent $path
 266        git config --global --add gui.recentrepo $path
 267        load_config 1
 268
 269        while {[llength $recent] > 10} {
 270                _unset_recentrepo [lindex $recent 0]
 271                set recent [lrange $recent 1 end]
 272        }
 273}
 274
 275method _open_recent {xy} {
 276        set id [lindex [split [$w_recentlist index @$xy] .] 0]
 277        set local_path [lindex $sorted_recent [expr {$id - 1}]]
 278        _do_open2 $this
 279}
 280
 281method _open_recent_path {p} {
 282        set local_path $p
 283        _do_open2 $this
 284}
 285
 286method _next {action} {
 287        destroy $w_body
 288        if {![winfo exists $w_next]} {
 289                button $w_next -default active
 290                pack $w_next -side right -padx 5 -before $w_quit
 291        }
 292        _do_$action $this
 293}
 294
 295method _write_local_path {args} {
 296        if {$local_path eq {}} {
 297                $w_next conf -state disabled
 298        } else {
 299                $w_next conf -state normal
 300        }
 301}
 302
 303method _git_init {} {
 304        if {[catch {file mkdir $local_path} err]} {
 305                error_popup [strcat \
 306                        [mc "Failed to create repository %s:" $local_path] \
 307                        "\n\n$err"]
 308                return 0
 309        }
 310
 311        if {[catch {cd $local_path} err]} {
 312                error_popup [strcat \
 313                        [mc "Failed to create repository %s:" $local_path] \
 314                        "\n\n$err"]
 315                return 0
 316        }
 317
 318        if {[catch {git init} err]} {
 319                error_popup [strcat \
 320                        [mc "Failed to create repository %s:" $local_path] \
 321                        "\n\n$err"]
 322                return 0
 323        }
 324
 325        _append_recentrepos [pwd]
 326        set ::_gitdir .git
 327        set ::_prefix {}
 328        return 1
 329}
 330
 331proc _is_git {path} {
 332        if {[file exists [file join $path HEAD]]
 333         && [file exists [file join $path objects]]
 334         && [file exists [file join $path config]]} {
 335                return 1
 336        }
 337        if {[is_Cygwin]} {
 338                if {[file exists [file join $path HEAD]]
 339                 && [file exists [file join $path objects.lnk]]
 340                 && [file exists [file join $path config.lnk]]} {
 341                        return 1
 342                }
 343        }
 344        return 0
 345}
 346
 347proc _objdir {path} {
 348        set objdir [file join $path .git objects]
 349        if {[file isdirectory $objdir]} {
 350                return $objdir
 351        }
 352
 353        set objdir [file join $path objects]
 354        if {[file isdirectory $objdir]} {
 355                return $objdir
 356        }
 357
 358        if {[is_Cygwin]} {
 359                set objdir [file join $path .git objects.lnk]
 360                if {[file isfile $objdir]} {
 361                        return [win32_read_lnk $objdir]
 362                }
 363
 364                set objdir [file join $path objects.lnk]
 365                if {[file isfile $objdir]} {
 366                        return [win32_read_lnk $objdir]
 367                }
 368        }
 369
 370        return {}
 371}
 372
 373######################################################################
 374##
 375## Create New Repository
 376
 377method _do_new {} {
 378        $w_next conf \
 379                -state disabled \
 380                -command [cb _do_new2] \
 381                -text [mc "Create"]
 382
 383        frame $w_body
 384        label $w_body.h \
 385                -font font_uibold \
 386                -text [mc "Create New Repository"]
 387        pack $w_body.h -side top -fill x -pady 10
 388        pack $w_body -fill x -padx 10
 389
 390        frame $w_body.where
 391        label $w_body.where.l -text [mc "Directory:"]
 392        entry $w_body.where.t \
 393                -textvariable @local_path \
 394                -borderwidth 1 \
 395                -relief sunken \
 396                -width 50
 397        button $w_body.where.b \
 398                -text [mc "Browse"] \
 399                -command [cb _new_local_path]
 400        set w_localpath $w_body.where.t
 401
 402        grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
 403        pack $w_body.where -fill x
 404
 405        grid columnconfigure $w_body.where 1 -weight 1
 406
 407        trace add variable @local_path write [cb _write_local_path]
 408        bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
 409        update
 410        focus $w_body.where.t
 411}
 412
 413method _new_local_path {} {
 414        if {$local_path ne {}} {
 415                set p [file dirname $local_path]
 416        } else {
 417                set p [_home]
 418        }
 419
 420        set p [tk_chooseDirectory \
 421                -initialdir $p \
 422                -parent $top \
 423                -title [mc "Git Repository"] \
 424                -mustexist false]
 425        if {$p eq {}} return
 426
 427        set p [file normalize $p]
 428        if {![_new_ok $p]} {
 429                return
 430        }
 431        set local_path $p
 432        $w_localpath icursor end
 433}
 434
 435method _do_new2 {} {
 436        if {![_new_ok $local_path]} {
 437                return
 438        }
 439        if {![_git_init $this]} {
 440                return
 441        }
 442        set done 1
 443}
 444
 445proc _new_ok {p} {
 446        if {[file isdirectory $p]} {
 447                if {[_is_git [file join $p .git]]} {
 448                        error_popup [mc "Directory %s already exists." $p]
 449                        return 0
 450                }
 451        } elseif {[file exists $p]} {
 452                error_popup [mc "File %s already exists." $p]
 453                return 0
 454        }
 455        return 1
 456}
 457
 458######################################################################
 459##
 460## Clone Existing Repository
 461
 462method _do_clone {} {
 463        $w_next conf \
 464                -state disabled \
 465                -command [cb _do_clone2] \
 466                -text [mc "Clone"]
 467
 468        frame $w_body
 469        label $w_body.h \
 470                -font font_uibold \
 471                -text [mc "Clone Existing Repository"]
 472        pack $w_body.h -side top -fill x -pady 10
 473        pack $w_body -fill x -padx 10
 474
 475        set args $w_body.args
 476        frame $w_body.args
 477        pack $args -fill both
 478
 479        label $args.origin_l -text [mc "Source Location:"]
 480        entry $args.origin_t \
 481                -textvariable @origin_url \
 482                -borderwidth 1 \
 483                -relief sunken \
 484                -width 50
 485        button $args.origin_b \
 486                -text [mc "Browse"] \
 487                -command [cb _open_origin]
 488        grid $args.origin_l $args.origin_t $args.origin_b -sticky ew
 489
 490        label $args.where_l -text [mc "Target Directory:"]
 491        entry $args.where_t \
 492                -textvariable @local_path \
 493                -borderwidth 1 \
 494                -relief sunken \
 495                -width 50
 496        button $args.where_b \
 497                -text [mc "Browse"] \
 498                -command [cb _new_local_path]
 499        grid $args.where_l $args.where_t $args.where_b -sticky ew
 500        set w_localpath $args.where_t
 501
 502        label $args.type_l -text [mc "Clone Type:"]
 503        frame $args.type_f
 504        set w_types [list]
 505        lappend w_types [radiobutton $args.type_f.hardlink \
 506                -state disabled \
 507                -anchor w \
 508                -text [mc "Standard (Fast, Semi-Redundant, Hardlinks)"] \
 509                -variable @clone_type \
 510                -value hardlink]
 511        lappend w_types [radiobutton $args.type_f.full \
 512                -state disabled \
 513                -anchor w \
 514                -text [mc "Full Copy (Slower, Redundant Backup)"] \
 515                -variable @clone_type \
 516                -value full]
 517        lappend w_types [radiobutton $args.type_f.shared \
 518                -state disabled \
 519                -anchor w \
 520                -text [mc "Shared (Fastest, Not Recommended, No Backup)"] \
 521                -variable @clone_type \
 522                -value shared]
 523        foreach r $w_types {
 524                pack $r -anchor w
 525        }
 526        grid $args.type_l $args.type_f -sticky new
 527
 528        grid columnconfigure $args 1 -weight 1
 529
 530        trace add variable @local_path write [cb _update_clone]
 531        trace add variable @origin_url write [cb _update_clone]
 532        bind $w_body.h <Destroy> "
 533                [list trace remove variable @local_path write [cb _update_clone]]
 534                [list trace remove variable @origin_url write [cb _update_clone]]
 535        "
 536        update
 537        focus $args.origin_t
 538}
 539
 540method _open_origin {} {
 541        if {$origin_url ne {} && [file isdirectory $origin_url]} {
 542                set p $origin_url
 543        } else {
 544                set p [_home]
 545        }
 546
 547        set p [tk_chooseDirectory \
 548                -initialdir $p \
 549                -parent $top \
 550                -title [mc "Git Repository"] \
 551                -mustexist true]
 552        if {$p eq {}} return
 553
 554        set p [file normalize $p]
 555        if {![_is_git [file join $p .git]] && ![_is_git $p]} {
 556                error_popup [mc "Not a Git repository: %s" [file tail $p]]
 557                return
 558        }
 559        set origin_url $p
 560}
 561
 562method _update_clone {args} {
 563        if {$local_path ne {} && $origin_url ne {}} {
 564                $w_next conf -state normal
 565        } else {
 566                $w_next conf -state disabled
 567        }
 568
 569        if {$origin_url ne {} &&
 570                (  [_is_git [file join $origin_url .git]]
 571                || [_is_git $origin_url])} {
 572                set e normal
 573                if {[[lindex $w_types 0] cget -state] eq {disabled}} {
 574                        set clone_type hardlink
 575                }
 576        } else {
 577                set e disabled
 578                set clone_type full
 579        }
 580
 581        foreach r $w_types {
 582                $r conf -state $e
 583        }
 584}
 585
 586method _do_clone2 {} {
 587        if {[file isdirectory $origin_url]} {
 588                set origin_url [file normalize $origin_url]
 589        }
 590
 591        if {$clone_type eq {hardlink} && ![file isdirectory $origin_url]} {
 592                error_popup [mc "Standard only available for local repository."]
 593                return
 594        }
 595        if {$clone_type eq {shared} && ![file isdirectory $origin_url]} {
 596                error_popup [mc "Shared only available for local repository."]
 597                return
 598        }
 599
 600        if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 601                set objdir [_objdir $origin_url]
 602                if {$objdir eq {}} {
 603                        error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 604                        return
 605                }
 606        }
 607
 608        set giturl $origin_url
 609        if {[is_Cygwin] && [file isdirectory $giturl]} {
 610                set giturl [exec cygpath --unix --absolute $giturl]
 611                if {$clone_type eq {shared}} {
 612                        set objdir [exec cygpath --unix --absolute $objdir]
 613                }
 614        }
 615
 616        if {[file exists $local_path]} {
 617                error_popup [mc "Location %s already exists." $local_path]
 618                return
 619        }
 620
 621        if {![_git_init $this]} return
 622        set local_path [pwd]
 623
 624        if {[catch {
 625                        git config remote.$origin_name.url $giturl
 626                        git config remote.$origin_name.fetch +refs/heads/*:refs/remotes/$origin_name/*
 627                } err]} {
 628                error_popup [strcat [mc "Failed to configure origin"] "\n\n$err"]
 629                return
 630        }
 631
 632        destroy $w_body $w_next
 633
 634        switch -exact -- $clone_type {
 635        hardlink {
 636                set o_cons [status_bar::two_line $w_body]
 637                pack $w_body -fill x -padx 10 -pady 10
 638
 639                $o_cons start \
 640                        [mc "Counting objects"] \
 641                        [mc "buckets"]
 642                update
 643
 644                if {[file exists [file join $objdir info alternates]]} {
 645                        set pwd [pwd]
 646                        if {[catch {
 647                                file mkdir [gitdir objects info]
 648                                set f_in [open [file join $objdir info alternates] r]
 649                                set f_cp [open [gitdir objects info alternates] w]
 650                                fconfigure $f_in -translation binary -encoding binary
 651                                fconfigure $f_cp -translation binary -encoding binary
 652                                cd $objdir
 653                                while {[gets $f_in line] >= 0} {
 654                                        if {[is_Cygwin]} {
 655                                                puts $f_cp [exec cygpath --unix --absolute $line]
 656                                        } else {
 657                                                puts $f_cp [file normalize $line]
 658                                        }
 659                                }
 660                                close $f_in
 661                                close $f_cp
 662                                cd $pwd
 663                        } err]} {
 664                                catch {cd $pwd}
 665                                _clone_failed $this [mc "Unable to copy objects/info/alternates: %s" $err]
 666                                return
 667                        }
 668                }
 669
 670                set tolink  [list]
 671                set buckets [glob \
 672                        -tails \
 673                        -nocomplain \
 674                        -directory [file join $objdir] ??]
 675                set bcnt [expr {[llength $buckets] + 2}]
 676                set bcur 1
 677                $o_cons update $bcur $bcnt
 678                update
 679
 680                file mkdir [file join .git objects pack]
 681                foreach i [glob -tails -nocomplain \
 682                        -directory [file join $objdir pack] *] {
 683                        lappend tolink [file join pack $i]
 684                }
 685                $o_cons update [incr bcur] $bcnt
 686                update
 687
 688                foreach i $buckets {
 689                        file mkdir [file join .git objects $i]
 690                        foreach j [glob -tails -nocomplain \
 691                                -directory [file join $objdir $i] *] {
 692                                lappend tolink [file join $i $j]
 693                        }
 694                        $o_cons update [incr bcur] $bcnt
 695                        update
 696                }
 697                $o_cons stop
 698
 699                if {$tolink eq {}} {
 700                        info_popup [strcat \
 701                                [mc "Nothing to clone from %s." $origin_url] \
 702                                "\n" \
 703                                [mc "The 'master' branch has not been initialized."] \
 704                                ]
 705                        destroy $w_body
 706                        set done 1
 707                        return
 708                }
 709
 710                set i [lindex $tolink 0]
 711                if {[catch {
 712                                file link -hard \
 713                                        [file join .git objects $i] \
 714                                        [file join $objdir $i]
 715                        } err]} {
 716                        info_popup [mc "Hardlinks are unavailable.  Falling back to copying."]
 717                        set i [_copy_files $this $objdir $tolink]
 718                } else {
 719                        set i [_link_files $this $objdir [lrange $tolink 1 end]]
 720                }
 721                if {!$i} return
 722
 723                destroy $w_body
 724        }
 725        full {
 726                set o_cons [console::embed \
 727                        $w_body \
 728                        [mc "Cloning from %s" $origin_url]]
 729                pack $w_body -fill both -expand 1 -padx 10
 730                $o_cons exec \
 731                        [list git fetch --no-tags -k $origin_name] \
 732                        [cb _do_clone_tags]
 733        }
 734        shared {
 735                set fd [open [gitdir objects info alternates] w]
 736                fconfigure $fd -translation binary
 737                puts $fd $objdir
 738                close $fd
 739        }
 740        }
 741
 742        if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 743                if {![_clone_refs $this]} return
 744                set pwd [pwd]
 745                if {[catch {
 746                                cd $origin_url
 747                                set HEAD [git rev-parse --verify HEAD^0]
 748                        } err]} {
 749                        _clone_failed $this [mc "Not a Git repository: %s" [file tail $origin_url]]
 750                        return 0
 751                }
 752                cd $pwd
 753                _do_clone_checkout $this $HEAD
 754        }
 755}
 756
 757method _copy_files {objdir tocopy} {
 758        $o_cons start \
 759                [mc "Copying objects"] \
 760                [mc "KiB"]
 761        set tot 0
 762        set cmp 0
 763        foreach p $tocopy {
 764                incr tot [file size [file join $objdir $p]]
 765        }
 766        foreach p $tocopy {
 767                if {[catch {
 768                                set f_in [open [file join $objdir $p] r]
 769                                set f_cp [open [file join .git objects $p] w]
 770                                fconfigure $f_in -translation binary -encoding binary
 771                                fconfigure $f_cp -translation binary -encoding binary
 772
 773                                while {![eof $f_in]} {
 774                                        incr cmp [fcopy $f_in $f_cp -size 16384]
 775                                        $o_cons update \
 776                                                [expr {$cmp / 1024}] \
 777                                                [expr {$tot / 1024}]
 778                                        update
 779                                }
 780
 781                                close $f_in
 782                                close $f_cp
 783                        } err]} {
 784                        _clone_failed $this [mc "Unable to copy object: %s" $err]
 785                        return 0
 786                }
 787        }
 788        return 1
 789}
 790
 791method _link_files {objdir tolink} {
 792        set total [llength $tolink]
 793        $o_cons start \
 794                [mc "Linking objects"] \
 795                [mc "objects"]
 796        for {set i 0} {$i < $total} {} {
 797                set p [lindex $tolink $i]
 798                if {[catch {
 799                                file link -hard \
 800                                        [file join .git objects $p] \
 801                                        [file join $objdir $p]
 802                        } err]} {
 803                        _clone_failed $this [mc "Unable to hardlink object: %s" $err]
 804                        return 0
 805                }
 806
 807                incr i
 808                if {$i % 5 == 0} {
 809                        $o_cons update $i $total
 810                        update
 811                }
 812        }
 813        return 1
 814}
 815
 816method _clone_refs {} {
 817        set pwd [pwd]
 818        if {[catch {cd $origin_url} err]} {
 819                error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 820                return 0
 821        }
 822        set fd_in [git_read for-each-ref \
 823                --tcl \
 824                {--format=list %(refname) %(objectname) %(*objectname)}]
 825        cd $pwd
 826
 827        set fd [open [gitdir packed-refs] w]
 828        fconfigure $fd -translation binary
 829        puts $fd "# pack-refs with: peeled"
 830        while {[gets $fd_in line] >= 0} {
 831                set line [eval $line]
 832                set refn [lindex $line 0]
 833                set robj [lindex $line 1]
 834                set tobj [lindex $line 2]
 835
 836                if {[regsub ^refs/heads/ $refn \
 837                        "refs/remotes/$origin_name/" refn]} {
 838                        puts $fd "$robj $refn"
 839                } elseif {[string match refs/tags/* $refn]} {
 840                        puts $fd "$robj $refn"
 841                        if {$tobj ne {}} {
 842                                puts $fd "^$tobj"
 843                        }
 844                }
 845        }
 846        close $fd_in
 847        close $fd
 848        return 1
 849}
 850
 851method _do_clone_tags {ok} {
 852        if {$ok} {
 853                $o_cons exec \
 854                        [list git fetch --tags -k $origin_name] \
 855                        [cb _do_clone_HEAD]
 856        } else {
 857                $o_cons done $ok
 858                _clone_failed $this [mc "Cannot fetch branches and objects.  See console output for details."]
 859        }
 860}
 861
 862method _do_clone_HEAD {ok} {
 863        if {$ok} {
 864                $o_cons exec \
 865                        [list git fetch $origin_name HEAD] \
 866                        [cb _do_clone_full_end]
 867        } else {
 868                $o_cons done $ok
 869                _clone_failed $this [mc "Cannot fetch tags.  See console output for details."]
 870        }
 871}
 872
 873method _do_clone_full_end {ok} {
 874        $o_cons done $ok
 875
 876        if {$ok} {
 877                destroy $w_body
 878
 879                set HEAD {}
 880                if {[file exists [gitdir FETCH_HEAD]]} {
 881                        set fd [open [gitdir FETCH_HEAD] r]
 882                        while {[gets $fd line] >= 0} {
 883                                if {[regexp "^(.{40})\t\t" $line line HEAD]} {
 884                                        break
 885                                }
 886                        }
 887                        close $fd
 888                }
 889
 890                catch {git pack-refs}
 891                _do_clone_checkout $this $HEAD
 892        } else {
 893                _clone_failed $this [mc "Cannot determine HEAD.  See console output for details."]
 894        }
 895}
 896
 897method _clone_failed {{why {}}} {
 898        if {[catch {file delete -force $local_path} err]} {
 899                set why [strcat \
 900                        $why \
 901                        "\n\n" \
 902                        [mc "Unable to cleanup %s" $local_path] \
 903                        "\n\n" \
 904                        $err]
 905        }
 906        if {$why ne {}} {
 907                update
 908                error_popup [strcat [mc "Clone failed."] "\n" $why]
 909        }
 910}
 911
 912method _do_clone_checkout {HEAD} {
 913        if {$HEAD eq {}} {
 914                info_popup [strcat \
 915                        [mc "No default branch obtained."] \
 916                        "\n" \
 917                        [mc "The 'master' branch has not been initialized."] \
 918                        ]
 919                set done 1
 920                return
 921        }
 922        if {[catch {
 923                        git update-ref HEAD $HEAD^0
 924                } err]} {
 925                info_popup [strcat \
 926                        [mc "Cannot resolve %s as a commit." $HEAD^0] \
 927                        "\n  $err" \
 928                        "\n" \
 929                        [mc "The 'master' branch has not been initialized."] \
 930                        ]
 931                set done 1
 932                return
 933        }
 934
 935        set o_cons [status_bar::two_line $w_body]
 936        pack $w_body -fill x -padx 10 -pady 10
 937        $o_cons start \
 938                [mc "Creating working directory"] \
 939                [mc "files"]
 940
 941        set readtree_err {}
 942        set fd [git_read --stderr read-tree \
 943                -m \
 944                -u \
 945                -v \
 946                HEAD \
 947                HEAD \
 948                ]
 949        fconfigure $fd -blocking 0 -translation binary
 950        fileevent $fd readable [cb _readtree_wait $fd]
 951}
 952
 953method _readtree_wait {fd} {
 954        set buf [read $fd]
 955        $o_cons update_meter $buf
 956        append readtree_err $buf
 957
 958        fconfigure $fd -blocking 1
 959        if {![eof $fd]} {
 960                fconfigure $fd -blocking 0
 961                return
 962        }
 963
 964        if {[catch {close $fd}]} {
 965                set err $readtree_err
 966                regsub {^fatal: } $err {} err
 967                error_popup [strcat \
 968                        [mc "Initial file checkout failed."] \
 969                        "\n\n$err"]
 970                return
 971        }
 972
 973        # -- Run the post-checkout hook.
 974        #
 975        set fd_ph [githook_read post-checkout [string repeat 0 40] \
 976                [git rev-parse HEAD] 1]
 977        if {$fd_ph ne {}} {
 978                global pch_error
 979                set pch_error {}
 980                fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
 981                fileevent $fd_ph readable [cb _postcheckout_wait $fd_ph]
 982        } else {
 983                set done 1
 984        }
 985}
 986
 987method _postcheckout_wait {fd_ph} {
 988        global pch_error
 989
 990        append pch_error [read $fd_ph]
 991        fconfigure $fd_ph -blocking 1
 992        if {[eof $fd_ph]} {
 993                if {[catch {close $fd_ph}]} {
 994                        hook_failed_popup post-checkout $pch_error 0
 995                }
 996                unset pch_error
 997                set done 1
 998                return
 999        }
1000        fconfigure $fd_ph -blocking 0
1001}
1002
1003######################################################################
1004##
1005## Open Existing Repository
1006
1007method _do_open {} {
1008        $w_next conf \
1009                -state disabled \
1010                -command [cb _do_open2] \
1011                -text [mc "Open"]
1012
1013        frame $w_body
1014        label $w_body.h \
1015                -font font_uibold \
1016                -text [mc "Open Existing Repository"]
1017        pack $w_body.h -side top -fill x -pady 10
1018        pack $w_body -fill x -padx 10
1019
1020        frame $w_body.where
1021        label $w_body.where.l -text [mc "Repository:"]
1022        entry $w_body.where.t \
1023                -textvariable @local_path \
1024                -borderwidth 1 \
1025                -relief sunken \
1026                -width 50
1027        button $w_body.where.b \
1028                -text [mc "Browse"] \
1029                -command [cb _open_local_path]
1030
1031        grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
1032        pack $w_body.where -fill x
1033
1034        grid columnconfigure $w_body.where 1 -weight 1
1035
1036        trace add variable @local_path write [cb _write_local_path]
1037        bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
1038        update
1039        focus $w_body.where.t
1040}
1041
1042method _open_local_path {} {
1043        if {$local_path ne {}} {
1044                set p $local_path
1045        } else {
1046                set p [_home]
1047        }
1048
1049        set p [tk_chooseDirectory \
1050                -initialdir $p \
1051                -parent $top \
1052                -title [mc "Git Repository"] \
1053                -mustexist true]
1054        if {$p eq {}} return
1055
1056        set p [file normalize $p]
1057        if {![_is_git [file join $p .git]]} {
1058                error_popup [mc "Not a Git repository: %s" [file tail $p]]
1059                return
1060        }
1061        set local_path $p
1062}
1063
1064method _do_open2 {} {
1065        if {![_is_git [file join $local_path .git]]} {
1066                error_popup [mc "Not a Git repository: %s" [file tail $local_path]]
1067                return
1068        }
1069
1070        if {[catch {cd $local_path} err]} {
1071                error_popup [strcat \
1072                        [mc "Failed to open repository %s:" $local_path] \
1073                        "\n\n$err"]
1074                return
1075        }
1076
1077        _append_recentrepos [pwd]
1078        set ::_gitdir .git
1079        set ::_prefix {}
1080        set done 1
1081}
1082
1083}