ab8e620c70bbaecd0397dd497c218f282da5ed92
   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        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
 192proc _home {} {
 193        if {[catch {set h $::env(HOME)}]
 194                || ![file isdirectory $h]} {
 195                set h .
 196        }
 197        return $h
 198}
 199
 200method _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
 208method _invoke_next {} {
 209        if {[winfo exists $w_next]} {
 210                uplevel #0 [$w_next cget -command]
 211        }
 212}
 213
 214proc _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
 224proc _unset_recentrepo {p} {
 225        regsub -all -- {([()\[\]{}\.^$+*?\\])} $p {\\\1} p
 226        git config --global --unset gui.recentrepo "^$p\$"
 227}
 228
 229proc _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 $recent 1 end]
 249        }
 250}
 251
 252method _open_recent {xy} {
 253        set id [lindex [split [$w_recentlist index @$xy] .] 0]
 254        set local_path [lindex $sorted_recent [expr {$id - 1}]]
 255        _do_open2 $this
 256}
 257
 258method _open_recent_path {p} {
 259        set local_path $p
 260        _do_open2 $this
 261}
 262
 263method _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 $this
 270}
 271
 272method _write_local_path {args} {
 273        if {$local_path eq {}} {
 274                $w_next conf -state disabled
 275        } else {
 276                $w_next conf -state normal
 277        }
 278}
 279
 280method _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
 313proc _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
 326method _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 $w_body.where.t
 358}
 359
 360method _new_local_path {} {
 361        if {$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
 403method _do_new2 {} {
 404        if {![_git_init $this]} {
 405                return
 406        }
 407        set done 1
 408}
 409
 410######################################################################
 411##
 412## Clone Existing Repository
 413
 414method _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 $args.origin_t
 487}
 488
 489method _open_origin {} {
 490        if {$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 $p
 509}
 510
 511method _update_clone {args} {
 512        if {$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
 535method _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
 704method _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
 738method _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
 763method _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 $fd
 795        return 1
 796}
 797
 798method _do_clone_tags {ok} {
 799        if {$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 $this [mc "Cannot fetch branches and objects.  See console output for details."]
 806        }
 807}
 808
 809method _do_clone_HEAD {ok} {
 810        if {$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
 820method _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
 844method _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" $why]
 856        }
 857}
 858
 859method _do_clone_checkout {HEAD} {
 860        if {$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
 900method _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
 927method _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 $w_body.where.t
 959}
 960
 961method _open_local_path {} {
 962        if {$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
 983method _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}