1e55aec90a369a74623362239b79ded058a0335b
   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
  14
  15field done              0 ; # Finished picking the repository?
  16field local_path       {} ; # Where this repository is locally
  17field origin_url       {} ; # Where we are cloning from
  18field origin_name  origin ; # What we shall call 'origin'
  19field clone_type hardlink ; # Type of clone to construct
  20field readtree_err        ; # Error output from read-tree (if any)
  21field sorted_recent       ; # recent repositories (sorted)
  22
  23constructor pick {} {
  24        global M1T M1B
  25
  26        make_toplevel top w
  27        wm title $top [mc "Git Gui"]
  28
  29        if {$top eq {.}} {
  30                menu $w.mbar -tearoff 0
  31                $top configure -menu $w.mbar
  32
  33                set m_repo $w.mbar.repository
  34                $w.mbar add cascade \
  35                        -label [mc Repository] \
  36                        -menu $m_repo
  37                menu $m_repo
  38
  39                if {[is_MacOSX]} {
  40                        $w.mbar add cascade -label [mc Apple] -menu .mbar.apple
  41                        menu $w.mbar.apple
  42                        $w.mbar.apple add command \
  43                                -label [mc "About %s" [appname]] \
  44                                -command do_about
  45                } else {
  46                        $w.mbar add cascade -label [mc Help] -menu $w.mbar.help
  47                        menu $w.mbar.help
  48                        $w.mbar.help add command \
  49                                -label [mc "About %s" [appname]] \
  50                                -command do_about
  51                }
  52
  53                wm protocol $top WM_DELETE_WINDOW exit
  54                bind $top <$M1B-q> exit
  55                bind $top <$M1B-Q> exit
  56                bind $top <Key-Escape> exit
  57        } else {
  58                wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
  59                bind $top <Key-Escape> [list destroy $top]
  60                set m_repo {}
  61        }
  62
  63        pack [git_logo $w.git_logo] -side left -fill y -padx 10 -pady 10
  64
  65        set w_body $w.body
  66        set opts $w_body.options
  67        frame $w_body
  68        text $opts \
  69                -cursor $::cursor_ptr \
  70                -relief flat \
  71                -background [$w_body cget -background] \
  72                -wrap none \
  73                -spacing1 5 \
  74                -width 50 \
  75                -height 3
  76        pack $opts -anchor w -fill x
  77
  78        $opts tag conf link_new -foreground blue -underline 1
  79        $opts tag bind link_new <1> [cb _next new]
  80        $opts insert end [mc "Create New Repository"] link_new
  81        $opts insert end "\n"
  82        if {$m_repo ne {}} {
  83                $m_repo add command \
  84                        -command [cb _next new] \
  85                        -accelerator $M1T-N \
  86                        -label [mc "New..."]
  87        }
  88
  89        $opts tag conf link_clone -foreground blue -underline 1
  90        $opts tag bind link_clone <1> [cb _next clone]
  91        $opts insert end [mc "Clone Existing Repository"] link_clone
  92        $opts insert end "\n"
  93        if {$m_repo ne {}} {
  94                $m_repo add command \
  95                        -command [cb _next clone] \
  96                        -accelerator $M1T-C \
  97                        -label [mc "Clone..."]
  98        }
  99
 100        $opts tag conf link_open -foreground blue -underline 1
 101        $opts tag bind link_open <1> [cb _next open]
 102        $opts insert end [mc "Open Existing Repository"] link_open
 103        $opts insert end "\n"
 104        if {$m_repo ne {}} {
 105                $m_repo add command \
 106                        -command [cb _next open] \
 107                        -accelerator $M1T-O \
 108                        -label [mc "Open..."]
 109        }
 110
 111        $opts conf -state disabled
 112
 113        set sorted_recent [_get_recentrepos]
 114        if {[llength $sorted_recent] > 0} {
 115                if {$m_repo ne {}} {
 116                        $m_repo add separator
 117                        $m_repo add command \
 118                                -state disabled \
 119                                -label [mc "Recent Repositories"]
 120                }
 121
 122                label $w_body.space
 123                label $w_body.recentlabel \
 124                        -anchor w \
 125                        -text [mc "Open Recent Repository:"]
 126                set w_recentlist $w_body.recentlist
 127                text $w_recentlist \
 128                        -cursor $::cursor_ptr \
 129                        -relief flat \
 130                        -background [$w_body.recentlabel cget -background] \
 131                        -wrap none \
 132                        -width 50 \
 133                        -height 10
 134                $w_recentlist tag conf link \
 135                        -foreground blue \
 136                        -underline 1
 137                set home "[file normalize $::env(HOME)][file separator]"
 138                set hlen [string length $home]
 139                foreach p $sorted_recent {
 140                        set path $p
 141                        if {[string equal -length $hlen $home $p]} {
 142                                set p "~[file separator][string range $p $hlen end]"
 143                        }
 144                        regsub -all "\n" $p "\\n" p
 145                        $w_recentlist insert end $p link
 146                        $w_recentlist insert end "\n"
 147
 148                        if {$m_repo ne {}} {
 149                                $m_repo add command \
 150                                        -command [cb _open_recent_path $path] \
 151                                        -label "    $p"
 152                        }
 153                }
 154                $w_recentlist conf -state disabled
 155                $w_recentlist tag bind link <1> [cb _open_recent %x,%y]
 156                pack $w_body.space -anchor w -fill x
 157                pack $w_body.recentlabel -anchor w -fill x
 158                pack $w_recentlist -anchor w -fill x
 159        }
 160        pack $w_body -fill x -padx 10 -pady 10
 161
 162        frame $w.buttons
 163        set w_next $w.buttons.next
 164        set w_quit $w.buttons.quit
 165        button $w_quit \
 166                -text [mc "Quit"] \
 167                -command exit
 168        pack $w_quit -side right -padx 5
 169        pack $w.buttons -side bottom -fill x -padx 10 -pady 10
 170
 171        if {$m_repo ne {}} {
 172                $m_repo add separator
 173                $m_repo add command \
 174                        -label [mc Quit] \
 175                        -command exit \
 176                        -accelerator $M1T-Q
 177        }
 178
 179        bind $top <Return> [cb _invoke_next]
 180        bind $top <Visibility> "
 181                [cb _center]
 182                grab $top
 183                focus $top
 184                bind $top <Visibility> {}
 185        "
 186        wm deiconify $top
 187        tkwait variable @done
 188
 189        if {$top eq {.}} {
 190                eval destroy [winfo children $top]
 191        }
 192}
 193
 194proc _home {} {
 195        if {[catch {set h $::env(HOME)}]
 196                || ![file isdirectory $h]} {
 197                set h .
 198        }
 199        return $h
 200}
 201
 202method _center {} {
 203        set nx [winfo reqwidth $top]
 204        set ny [winfo reqheight $top]
 205        set rx [expr {([winfo screenwidth  $top] - $nx) / 3}]
 206        set ry [expr {([winfo screenheight $top] - $ny) / 3}]
 207        wm geometry $top [format {+%d+%d} $rx $ry]
 208}
 209
 210method _invoke_next {} {
 211        if {[winfo exists $w_next]} {
 212                uplevel #0 [$w_next cget -command]
 213        }
 214}
 215
 216proc _get_recentrepos {} {
 217        set recent [list]
 218        foreach p [get_config gui.recentrepo] {
 219                if {[_is_git [file join $p .git]]} {
 220                        lappend recent $p
 221                }
 222        }
 223        return [lsort $recent]
 224}
 225
 226proc _unset_recentrepo {p} {
 227        regsub -all -- {([()\[\]{}\.^$+*?\\])} $p {\\\1} p
 228        git config --global --unset gui.recentrepo "^$p\$"
 229}
 230
 231proc _append_recentrepos {path} {
 232        set path [file normalize $path]
 233        set recent [get_config gui.recentrepo]
 234
 235        if {[lindex $recent end] eq $path} {
 236                return
 237        }
 238
 239        set i [lsearch $recent $path]
 240        if {$i >= 0} {
 241                _unset_recentrepo $path
 242                set recent [lreplace $recent $i $i]
 243        }
 244
 245        lappend recent $path
 246        git config --global --add gui.recentrepo $path
 247
 248        while {[llength $recent] > 10} {
 249                _unset_recentrepo [lindex $recent 0]
 250                set recent [lrange $recent 1 end]
 251        }
 252}
 253
 254method _open_recent {xy} {
 255        set id [lindex [split [$w_recentlist index @$xy] .] 0]
 256        set local_path [lindex $sorted_recent [expr {$id - 1}]]
 257        _do_open2 $this
 258}
 259
 260method _open_recent_path {p} {
 261        set local_path $p
 262        _do_open2 $this
 263}
 264
 265method _next {action} {
 266        destroy $w_body
 267        if {![winfo exists $w_next]} {
 268                button $w_next -default active
 269                pack $w_next -side right -padx 5 -before $w_quit
 270        }
 271        _do_$action $this
 272}
 273
 274method _write_local_path {args} {
 275        if {$local_path eq {}} {
 276                $w_next conf -state disabled
 277        } else {
 278                $w_next conf -state normal
 279        }
 280}
 281
 282method _git_init {} {
 283        if {[file exists $local_path]} {
 284                error_popup [mc "Location %s already exists." $local_path]
 285                return 0
 286        }
 287
 288        if {[catch {file mkdir $local_path} err]} {
 289                error_popup [strcat \
 290                        [mc "Failed to create repository %s:" $local_path] \
 291                        "\n\n$err"]
 292                return 0
 293        }
 294
 295        if {[catch {cd $local_path} err]} {
 296                error_popup [strcat \
 297                        [mc "Failed to create repository %s:" $local_path] \
 298                        "\n\n$err"]
 299                return 0
 300        }
 301
 302        if {[catch {git init} err]} {
 303                error_popup [strcat \
 304                        [mc "Failed to create repository %s:" $local_path] \
 305                        "\n\n$err"]
 306                return 0
 307        }
 308
 309        _append_recentrepos [pwd]
 310        set ::_gitdir .git
 311        set ::_prefix {}
 312        return 1
 313}
 314
 315proc _is_git {path} {
 316        if {[file exists [file join $path HEAD]]
 317         && [file exists [file join $path objects]]
 318         && [file exists [file join $path config]]} {
 319                return 1
 320        }
 321        return 0
 322}
 323
 324######################################################################
 325##
 326## Create New Repository
 327
 328method _do_new {} {
 329        $w_next conf \
 330                -state disabled \
 331                -command [cb _do_new2] \
 332                -text [mc "Create"]
 333
 334        frame $w_body
 335        label $w_body.h \
 336                -font font_uibold \
 337                -text [mc "Create New Repository"]
 338        pack $w_body.h -side top -fill x -pady 10
 339        pack $w_body -fill x -padx 10
 340
 341        frame $w_body.where
 342        label $w_body.where.l -text [mc "Directory:"]
 343        entry $w_body.where.t \
 344                -textvariable @local_path \
 345                -font font_diff \
 346                -width 50
 347        button $w_body.where.b \
 348                -text [mc "Browse"] \
 349                -command [cb _new_local_path]
 350
 351        pack $w_body.where.b -side right
 352        pack $w_body.where.l -side left
 353        pack $w_body.where.t -fill x
 354        pack $w_body.where -fill x
 355
 356        trace add variable @local_path write [cb _write_local_path]
 357        bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
 358        update
 359        focus $w_body.where.t
 360}
 361
 362method _new_local_path {} {
 363        if {$local_path ne {}} {
 364                set p [file dirname $local_path]
 365        } else {
 366                set p [_home]
 367        }
 368
 369        set p [tk_chooseDirectory \
 370                -initialdir $p \
 371                -parent $top \
 372                -title [mc "Git Repository"] \
 373                -mustexist false]
 374        if {$p eq {}} return
 375
 376        set p [file normalize $p]
 377        if {[file isdirectory $p]} {
 378                foreach i [glob \
 379                        -directory $p \
 380                        -tails \
 381                        -nocomplain \
 382                        * .*] {
 383                        switch -- $i {
 384                         . continue
 385                        .. continue
 386                        default {
 387                                error_popup [mc "Directory %s already exists." $p]
 388                                return
 389                        }
 390                        }
 391                }
 392                if {[catch {file delete $p} err]} {
 393                        error_popup [strcat \
 394                                [mc "Directory %s already exists." $p] \
 395                                "\n\n$err"]
 396                        return
 397                }
 398        } elseif {[file exists $p]} {
 399                error_popup [mc "File %s already exists." $p]
 400                return
 401        }
 402        set local_path $p
 403}
 404
 405method _do_new2 {} {
 406        if {![_git_init $this]} {
 407                return
 408        }
 409        set done 1
 410}
 411
 412######################################################################
 413##
 414## Clone Existing Repository
 415
 416method _do_clone {} {
 417        $w_next conf \
 418                -state disabled \
 419                -command [cb _do_clone2] \
 420                -text [mc "Clone"]
 421
 422        frame $w_body
 423        label $w_body.h \
 424                -font font_uibold \
 425                -text [mc "Clone Existing Repository"]
 426        pack $w_body.h -side top -fill x -pady 10
 427        pack $w_body -fill x -padx 10
 428
 429        set args $w_body.args
 430        frame $w_body.args
 431        pack $args -fill both
 432
 433        label $args.origin_l -text [mc "URL:"]
 434        entry $args.origin_t \
 435                -textvariable @origin_url \
 436                -font font_diff \
 437                -width 50
 438        button $args.origin_b \
 439                -text [mc "Browse"] \
 440                -command [cb _open_origin]
 441        grid $args.origin_l $args.origin_t $args.origin_b -sticky ew
 442
 443        label $args.where_l -text [mc "Directory:"]
 444        entry $args.where_t \
 445                -textvariable @local_path \
 446                -font font_diff \
 447                -width 50
 448        button $args.where_b \
 449                -text [mc "Browse"] \
 450                -command [cb _new_local_path]
 451        grid $args.where_l $args.where_t $args.where_b -sticky ew
 452
 453        label $args.type_l -text [mc "Clone Type:"]
 454        frame $args.type_f
 455        set w_types [list]
 456        lappend w_types [radiobutton $args.type_f.hardlink \
 457                -state disabled \
 458                -anchor w \
 459                -text [mc "Standard (Fast, Semi-Redundant, Hardlinks)"] \
 460                -variable @clone_type \
 461                -value hardlink]
 462        lappend w_types [radiobutton $args.type_f.full \
 463                -state disabled \
 464                -anchor w \
 465                -text [mc "Full Copy (Slower, Redundant Backup)"] \
 466                -variable @clone_type \
 467                -value full]
 468        lappend w_types [radiobutton $args.type_f.shared \
 469                -state disabled \
 470                -anchor w \
 471                -text [mc "Shared (Fastest, Not Recommended, No Backup)"] \
 472                -variable @clone_type \
 473                -value shared]
 474        foreach r $w_types {
 475                pack $r -anchor w
 476        }
 477        grid $args.type_l $args.type_f -sticky new
 478
 479        grid columnconfigure $args 1 -weight 1
 480
 481        trace add variable @local_path write [cb _update_clone]
 482        trace add variable @origin_url write [cb _update_clone]
 483        bind $w_body.h <Destroy> "
 484                [list trace remove variable @local_path write [cb _update_clone]]
 485                [list trace remove variable @origin_url write [cb _update_clone]]
 486        "
 487        update
 488        focus $args.origin_t
 489}
 490
 491method _open_origin {} {
 492        if {$origin_url ne {} && [file isdirectory $origin_url]} {
 493                set p $origin_url
 494        } else {
 495                set p [_home]
 496        }
 497
 498        set p [tk_chooseDirectory \
 499                -initialdir $p \
 500                -parent $top \
 501                -title [mc "Git Repository"] \
 502                -mustexist true]
 503        if {$p eq {}} return
 504
 505        set p [file normalize $p]
 506        if {![_is_git [file join $p .git]] && ![_is_git $p]} {
 507                error_popup [mc "Not a Git repository: %s" [file tail $p]]
 508                return
 509        }
 510        set origin_url $p
 511}
 512
 513method _update_clone {args} {
 514        if {$local_path ne {} && $origin_url ne {}} {
 515                $w_next conf -state normal
 516        } else {
 517                $w_next conf -state disabled
 518        }
 519
 520        if {$origin_url ne {} &&
 521                (  [_is_git [file join $origin_url .git]]
 522                || [_is_git $origin_url])} {
 523                set e normal
 524                if {[[lindex $w_types 0] cget -state] eq {disabled}} {
 525                        set clone_type hardlink
 526                }
 527        } else {
 528                set e disabled
 529                set clone_type full
 530        }
 531
 532        foreach r $w_types {
 533                $r conf -state $e
 534        }
 535}
 536
 537method _do_clone2 {} {
 538        if {[file isdirectory $origin_url]} {
 539                set origin_url [file normalize $origin_url]
 540        }
 541
 542        if {$clone_type eq {hardlink} && ![file isdirectory $origin_url]} {
 543                error_popup [mc "Standard only available for local repository."]
 544                return
 545        }
 546        if {$clone_type eq {shared} && ![file isdirectory $origin_url]} {
 547                error_popup [mc "Shared only available for local repository."]
 548                return
 549        }
 550
 551        if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 552                set objdir [file join $origin_url .git objects]
 553                if {![file isdirectory $objdir]} {
 554                        set objdir [file join $origin_url objects]
 555                        if {![file isdirectory $objdir]} {
 556                                error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 557                                return
 558                        }
 559                }
 560        }
 561
 562        set giturl $origin_url
 563        if {[is_Cygwin] && [file isdirectory $giturl]} {
 564                set giturl [exec cygpath --unix --absolute $giturl]
 565                if {$clone_type eq {shared}} {
 566                        set objdir [exec cygpath --unix --absolute $objdir]
 567                }
 568        }
 569
 570        if {![_git_init $this]} return
 571        set local_path [pwd]
 572
 573        if {[catch {
 574                        git config remote.$origin_name.url $giturl
 575                        git config remote.$origin_name.fetch +refs/heads/*:refs/remotes/$origin_name/*
 576                } err]} {
 577                error_popup [strcat [mc "Failed to configure origin"] "\n\n$err"]
 578                return
 579        }
 580
 581        destroy $w_body $w_next
 582
 583        switch -exact -- $clone_type {
 584        hardlink {
 585                set o_cons [status_bar::two_line $w_body]
 586                pack $w_body -fill x -padx 10 -pady 10
 587
 588                $o_cons start \
 589                        [mc "Counting objects"] \
 590                        [mc "buckets"]
 591                update
 592
 593                if {[file exists [file join $objdir info alternates]]} {
 594                        set pwd [pwd]
 595                        if {[catch {
 596                                file mkdir [gitdir objects info]
 597                                set f_in [open [file join $objdir info alternates] r]
 598                                set f_cp [open [gitdir objects info alternates] w]
 599                                fconfigure $f_in -translation binary -encoding binary
 600                                fconfigure $f_cp -translation binary -encoding binary
 601                                cd $objdir
 602                                while {[gets $f_in line] >= 0} {
 603                                        if {[is_Cygwin]} {
 604                                                puts $f_cp [exec cygpath --unix --absolute $line]
 605                                        } else {
 606                                                puts $f_cp [file normalize $line]
 607                                        }
 608                                }
 609                                close $f_in
 610                                close $f_cp
 611                                cd $pwd
 612                        } err]} {
 613                                catch {cd $pwd}
 614                                _clone_failed $this [mc "Unable to copy objects/info/alternates: %s" $err]
 615                                return
 616                        }
 617                }
 618
 619                set tolink  [list]
 620                set buckets [glob \
 621                        -tails \
 622                        -nocomplain \
 623                        -directory [file join $objdir] ??]
 624                set bcnt [expr {[llength $buckets] + 2}]
 625                set bcur 1
 626                $o_cons update $bcur $bcnt
 627                update
 628
 629                file mkdir [file join .git objects pack]
 630                foreach i [glob -tails -nocomplain \
 631                        -directory [file join $objdir pack] *] {
 632                        lappend tolink [file join pack $i]
 633                }
 634                $o_cons update [incr bcur] $bcnt
 635                update
 636
 637                foreach i $buckets {
 638                        file mkdir [file join .git objects $i]
 639                        foreach j [glob -tails -nocomplain \
 640                                -directory [file join $objdir $i] *] {
 641                                lappend tolink [file join $i $j]
 642                        }
 643                        $o_cons update [incr bcur] $bcnt
 644                        update
 645                }
 646                $o_cons stop
 647
 648                if {$tolink eq {}} {
 649                        info_popup [strcat \
 650                                [mc "Nothing to clone from %s." $origin_url] \
 651                                "\n" \
 652                                [mc "The 'master' branch has not been initialized."] \
 653                                ]
 654                        destroy $w_body
 655                        set done 1
 656                        return
 657                }
 658
 659                set i [lindex $tolink 0]
 660                if {[catch {
 661                                file link -hard \
 662                                        [file join .git objects $i] \
 663                                        [file join $objdir $i]
 664                        } err]} {
 665                        info_popup [mc "Hardlinks are unavailable.  Falling back to copying."]
 666                        set i [_copy_files $this $objdir $tolink]
 667                } else {
 668                        set i [_link_files $this $objdir [lrange $tolink 1 end]]
 669                }
 670                if {!$i} return
 671
 672                destroy $w_body
 673        }
 674        full {
 675                set o_cons [console::embed \
 676                        $w_body \
 677                        [mc "Cloning from %s" $origin_url]]
 678                pack $w_body -fill both -expand 1 -padx 10
 679                $o_cons exec \
 680                        [list git fetch --no-tags -k $origin_name] \
 681                        [cb _do_clone_tags]
 682        }
 683        shared {
 684                set fd [open [gitdir objects info alternates] w]
 685                fconfigure $fd -translation binary
 686                puts $fd $objdir
 687                close $fd
 688        }
 689        }
 690
 691        if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 692                if {![_clone_refs $this]} return
 693                set pwd [pwd]
 694                if {[catch {
 695                                cd $origin_url
 696                                set HEAD [git rev-parse --verify HEAD^0]
 697                        } err]} {
 698                        _clone_failed $this [mc "Not a Git repository: %s" [file tail $origin_url]]
 699                        return 0
 700                }
 701                cd $pwd
 702                _do_clone_checkout $this $HEAD
 703        }
 704}
 705
 706method _copy_files {objdir tocopy} {
 707        $o_cons start \
 708                [mc "Copying objects"] \
 709                [mc "KiB"]
 710        set tot 0
 711        set cmp 0
 712        foreach p $tocopy {
 713                incr tot [file size [file join $objdir $p]]
 714        }
 715        foreach p $tocopy {
 716                if {[catch {
 717                                set f_in [open [file join $objdir $p] r]
 718                                set f_cp [open [file join .git objects $p] w]
 719                                fconfigure $f_in -translation binary -encoding binary
 720                                fconfigure $f_cp -translation binary -encoding binary
 721
 722                                while {![eof $f_in]} {
 723                                        incr cmp [fcopy $f_in $f_cp -size 16384]
 724                                        $o_cons update \
 725                                                [expr {$cmp / 1024}] \
 726                                                [expr {$tot / 1024}]
 727                                        update
 728                                }
 729
 730                                close $f_in
 731                                close $f_cp
 732                        } err]} {
 733                        _clone_failed $this [mc "Unable to copy object: %s" $err]
 734                        return 0
 735                }
 736        }
 737        return 1
 738}
 739
 740method _link_files {objdir tolink} {
 741        set total [llength $tolink]
 742        $o_cons start \
 743                [mc "Linking objects"] \
 744                [mc "objects"]
 745        for {set i 0} {$i < $total} {} {
 746                set p [lindex $tolink $i]
 747                if {[catch {
 748                                file link -hard \
 749                                        [file join .git objects $p] \
 750                                        [file join $objdir $p]
 751                        } err]} {
 752                        _clone_failed $this [mc "Unable to hardlink object: %s" $err]
 753                        return 0
 754                }
 755
 756                incr i
 757                if {$i % 5 == 0} {
 758                        $o_cons update $i $total
 759                        update
 760                }
 761        }
 762        return 1
 763}
 764
 765method _clone_refs {} {
 766        set pwd [pwd]
 767        if {[catch {cd $origin_url} err]} {
 768                error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 769                return 0
 770        }
 771        set fd_in [git_read for-each-ref \
 772                --tcl \
 773                {--format=list %(refname) %(objectname) %(*objectname)}]
 774        cd $pwd
 775
 776        set fd [open [gitdir packed-refs] w]
 777        fconfigure $fd -translation binary
 778        puts $fd "# pack-refs with: peeled"
 779        while {[gets $fd_in line] >= 0} {
 780                set line [eval $line]
 781                set refn [lindex $line 0]
 782                set robj [lindex $line 1]
 783                set tobj [lindex $line 2]
 784
 785                if {[regsub ^refs/heads/ $refn \
 786                        "refs/remotes/$origin_name/" refn]} {
 787                        puts $fd "$robj $refn"
 788                } elseif {[string match refs/tags/* $refn]} {
 789                        puts $fd "$robj $refn"
 790                        if {$tobj ne {}} {
 791                                puts $fd "^$tobj"
 792                        }
 793                }
 794        }
 795        close $fd_in
 796        close $fd
 797        return 1
 798}
 799
 800method _do_clone_tags {ok} {
 801        if {$ok} {
 802                $o_cons exec \
 803                        [list git fetch --tags -k $origin_name] \
 804                        [cb _do_clone_HEAD]
 805        } else {
 806                $o_cons done $ok
 807                _clone_failed $this [mc "Cannot fetch branches and objects.  See console output for details."]
 808        }
 809}
 810
 811method _do_clone_HEAD {ok} {
 812        if {$ok} {
 813                $o_cons exec \
 814                        [list git fetch $origin_name HEAD] \
 815                        [cb _do_clone_full_end]
 816        } else {
 817                $o_cons done $ok
 818                _clone_failed $this [mc "Cannot fetch tags.  See console output for details."]
 819        }
 820}
 821
 822method _do_clone_full_end {ok} {
 823        $o_cons done $ok
 824
 825        if {$ok} {
 826                destroy $w_body
 827
 828                set HEAD {}
 829                if {[file exists [gitdir FETCH_HEAD]]} {
 830                        set fd [open [gitdir FETCH_HEAD] r]
 831                        while {[gets $fd line] >= 0} {
 832                                if {[regexp "^(.{40})\t\t" $line line HEAD]} {
 833                                        break
 834                                }
 835                        }
 836                        close $fd
 837                }
 838
 839                catch {git pack-refs}
 840                _do_clone_checkout $this $HEAD
 841        } else {
 842                _clone_failed $this [mc "Cannot determine HEAD.  See console output for details."]
 843        }
 844}
 845
 846method _clone_failed {{why {}}} {
 847        if {[catch {file delete -force $local_path} err]} {
 848                set why [strcat \
 849                        $why \
 850                        "\n\n" \
 851                        [mc "Unable to cleanup %s" $local_path] \
 852                        "\n\n" \
 853                        $err]
 854        }
 855        if {$why ne {}} {
 856                update
 857                error_popup [strcat [mc "Clone failed."] "\n" $why]
 858        }
 859}
 860
 861method _do_clone_checkout {HEAD} {
 862        if {$HEAD eq {}} {
 863                info_popup [strcat \
 864                        [mc "No default branch obtained."] \
 865                        "\n" \
 866                        [mc "The 'master' branch has not been initialized."] \
 867                        ]
 868                set done 1
 869                return
 870        }
 871        if {[catch {
 872                        git update-ref HEAD $HEAD^0
 873                } err]} {
 874                info_popup [strcat \
 875                        [mc "Cannot resolve %s as a commit." $HEAD^0] \
 876                        "\n  $err" \
 877                        "\n" \
 878                        [mc "The 'master' branch has not been initialized."] \
 879                        ]
 880                set done 1
 881                return
 882        }
 883
 884        set o_cons [status_bar::two_line $w_body]
 885        pack $w_body -fill x -padx 10 -pady 10
 886        $o_cons start \
 887                [mc "Creating working directory"] \
 888                [mc "files"]
 889
 890        set readtree_err {}
 891        set fd [git_read --stderr read-tree \
 892                -m \
 893                -u \
 894                -v \
 895                HEAD \
 896                HEAD \
 897                ]
 898        fconfigure $fd -blocking 0 -translation binary
 899        fileevent $fd readable [cb _readtree_wait $fd]
 900}
 901
 902method _readtree_wait {fd} {
 903        set buf [read $fd]
 904        $o_cons update_meter $buf
 905        append readtree_err $buf
 906
 907        fconfigure $fd -blocking 1
 908        if {![eof $fd]} {
 909                fconfigure $fd -blocking 0
 910                return
 911        }
 912
 913        if {[catch {close $fd}]} {
 914                set err $readtree_err
 915                regsub {^fatal: } $err {} err
 916                error_popup [strcat \
 917                        [mc "Initial file checkout failed."] \
 918                        "\n\n$err"]
 919                return
 920        }
 921
 922        set done 1
 923}
 924
 925######################################################################
 926##
 927## Open Existing Repository
 928
 929method _do_open {} {
 930        $w_next conf \
 931                -state disabled \
 932                -command [cb _do_open2] \
 933                -text [mc "Open"]
 934
 935        frame $w_body
 936        label $w_body.h \
 937                -font font_uibold \
 938                -text [mc "Open Existing Repository"]
 939        pack $w_body.h -side top -fill x -pady 10
 940        pack $w_body -fill x -padx 10
 941
 942        frame $w_body.where
 943        label $w_body.where.l -text [mc "Repository:"]
 944        entry $w_body.where.t \
 945                -textvariable @local_path \
 946                -font font_diff \
 947                -width 50
 948        button $w_body.where.b \
 949                -text [mc "Browse"] \
 950                -command [cb _open_local_path]
 951
 952        pack $w_body.where.b -side right
 953        pack $w_body.where.l -side left
 954        pack $w_body.where.t -fill x
 955        pack $w_body.where -fill x
 956
 957        trace add variable @local_path write [cb _write_local_path]
 958        bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
 959        update
 960        focus $w_body.where.t
 961}
 962
 963method _open_local_path {} {
 964        if {$local_path ne {}} {
 965                set p $local_path
 966        } else {
 967                set p [_home]
 968        }
 969
 970        set p [tk_chooseDirectory \
 971                -initialdir $p \
 972                -parent $top \
 973                -title [mc "Git Repository"] \
 974                -mustexist true]
 975        if {$p eq {}} return
 976
 977        set p [file normalize $p]
 978        if {![_is_git [file join $p .git]]} {
 979                error_popup [mc "Not a Git repository: %s" [file tail $p]]
 980                return
 981        }
 982        set local_path $p
 983}
 984
 985method _do_open2 {} {
 986        if {![_is_git [file join $local_path .git]]} {
 987                error_popup [mc "Not a Git repository: %s" [file tail $local_path]]
 988                return
 989        }
 990
 991        if {[catch {cd $local_path} err]} {
 992                error_popup [strcat \
 993                        [mc "Failed to open repository %s:" $local_path] \
 994                        "\n\n$err"]
 995                return
 996        }
 997
 998        _append_recentrepos [pwd]
 999        set ::_gitdir .git
1000        set ::_prefix {}
1001        set done 1
1002}
1003
1004}