git-gui/lib/choose_repository.tcl

   1 # git-gui Git repository chooser
   2 # Copyright (C) 2007 Shawn Pearce
   3
   4 class choose_repository {
   5
   6 field top
   7 field w
   8 field w_body      ; # Widget holding the center content
   9 field w_next      ; # Next button
  10 field w_quit      ; # Quit button
  11 field o_cons      ; # Console object (if active)
  12 field w_types     ; # List of type buttons in clone
  13 field w_recentlist ; # Listbox containing recent repositories
  14 field w_localpath  ; # Entry widget bound to local_path
  15
  16 field done              0 ; # Finished picking the repository?
  17 field local_path       {} ; # Where this repository is locally
  18 field origin_url       {} ; # Where we are cloning from
  19 field origin_name  origin ; # What we shall call 'origin'
  20 field clone_type hardlink ; # Type of clone to construct
  21 field recursive      true ; # Recursive cloning flag
  22 field readtree_err        ; # Error output from read-tree (if any)
  23 field sorted_recent       ; # recent repositories (sorted)
  24
  25 constructor pick {} {
  26         global M1T M1B use_ttk NS
  27
  28         if {[set maxrecent [get_config gui.maxrecentrepo]] eq {}} {
  29                 set maxrecent 10
  30         }
  31
  32         make_dialog top w
  33         wm title $top [mc "Git Gui"]
  34
  35         if {$top eq {.}} {
  36                 menu $w.mbar -tearoff 0
  37                 $top configure -menu $w.mbar
  38
  39                 set m_repo $w.mbar.repository
  40                 $w.mbar add cascade \
  41                         -label [mc Repository] \
  42                         -menu $m_repo
  43                 menu $m_repo
  44
  45                 if {[is_MacOSX]} {
  46                         $w.mbar add cascade -label Apple -menu .mbar.apple
  47                         menu $w.mbar.apple
  48                         $w.mbar.apple add command \
  49                                 -label [mc "About %s" [appname]] \
  50                                 -command do_about
  51                         $w.mbar.apple add command \
  52                                 -label [mc "Show SSH Key"] \
  53                                 -command do_ssh_key
  54                 } else {
  55                         $w.mbar add cascade -label [mc Help] -menu $w.mbar.help
  56                         menu $w.mbar.help
  57                         $w.mbar.help add command \
  58                                 -label [mc "About %s" [appname]] \
  59                                 -command do_about
  60                         $w.mbar.help add command \
  61                                 -label [mc "Show SSH Key"] \
  62                                 -command do_ssh_key
  63                 }
  64
  65                 wm protocol $top WM_DELETE_WINDOW exit
  66                 bind $top <$M1B-q> exit
  67                 bind $top <$M1B-Q> exit
  68                 bind $top <Key-Escape> exit
  69         } else {
  70                 wm geometry $top "+[winfo rootx .]+[winfo rooty .]"
  71                 bind $top <Key-Escape> [list destroy $top]
  72                 set m_repo {}
  73         }
  74
  75         pack [git_logo $w.git_logo] -side left -fill y -padx 10 -pady 10
  76
  77         set w_body $w.body
  78         set opts $w_body.options
  79         ${NS}::frame $w_body
  80         text $opts \
  81                 -cursor $::cursor_ptr \
  82                 -relief flat \
  83                 -background [get_bg_color $w_body] \
  84                 -wrap none \
  85                 -spacing1 5 \
  86                 -width 50 \
  87                 -height 3
  88         pack $opts -anchor w -fill x
  89
  90         $opts tag conf link_new -foreground blue -underline 1
  91         $opts tag bind link_new <1> [cb _next new]
  92         $opts insert end [mc "Create New Repository"] link_new
  93         $opts insert end "\n"
  94         if {$m_repo ne {}} {
  95                 $m_repo add command \
  96                         -command [cb _next new] \
  97                         -accelerator $M1T-N \
  98                         -label [mc "New..."]
  99                 bind $top <$M1B-n> [cb _next new]
 100                 bind $top <$M1B-N> [cb _next new]
 101         }
 102
 103         $opts tag conf link_clone -foreground blue -underline 1
 104         $opts tag bind link_clone <1> [cb _next clone]
 105         $opts insert end [mc "Clone Existing Repository"] link_clone
 106         $opts insert end "\n"
 107         if {$m_repo ne {}} {
 108                 if {[tk windowingsystem] eq "win32"} {
 109                         set key L
 110                 } else {
 111                         set key C
 112                 }
 113                 $m_repo add command \
 114                         -command [cb _next clone] \
 115                         -accelerator $M1T-$key \
 116                         -label [mc "Clone..."]
 117                 bind $top <$M1B-[string tolower $key]> [cb _next clone]
 118                 bind $top <$M1B-[string toupper $key]> [cb _next clone]
 119         }
 120
 121         $opts tag conf link_open -foreground blue -underline 1
 122         $opts tag bind link_open <1> [cb _next open]
 123         $opts insert end [mc "Open Existing Repository"] link_open
 124         $opts insert end "\n"
 125         if {$m_repo ne {}} {
 126                 $m_repo add command \
 127                         -command [cb _next open] \
 128                         -accelerator $M1T-O \
 129                         -label [mc "Open..."]
 130                 bind $top <$M1B-o> [cb _next open]
 131                 bind $top <$M1B-O> [cb _next open]
 132         }
 133
 134         $opts conf -state disabled
 135
 136         set sorted_recent [_get_recentrepos]
 137         if {[llength $sorted_recent] > 0} {
 138                 if {$m_repo ne {}} {
 139                         $m_repo add separator
 140                         $m_repo add command \
 141                                 -state disabled \
 142                                 -label [mc "Recent Repositories"]
 143                 }
 144
 145                 ${NS}::label $w_body.space
 146                 ${NS}::label $w_body.recentlabel \
 147                         -anchor w \
 148                         -text [mc "Open Recent Repository:"]
 149                 set w_recentlist $w_body.recentlist
 150                 text $w_recentlist \
 151                         -cursor $::cursor_ptr \
 152                         -relief flat \
 153                         -background [get_bg_color $w_body.recentlabel] \
 154                         -wrap none \
 155                         -width 50 \
 156                         -height $maxrecent
 157                 $w_recentlist tag conf link \
 158                         -foreground blue \
 159                         -underline 1
 160                 set home $::env(HOME)
 161                 if {[is_Cygwin]} {
 162                         set home [exec cygpath --windows --absolute $home]
 163                 }
 164                 set home "[file normalize $home]/"
 165                 set hlen [string length $home]
 166                 foreach p $sorted_recent {
 167                         set path $p
 168                         if {[string equal -length $hlen $home $p]} {
 169                                 set p "~/[string range $p $hlen end]"
 170                         }
 171                         regsub -all "\n" $p "\\n" p
 172                         $w_recentlist insert end $p link
 173                         $w_recentlist insert end "\n"
 174
 175                         if {$m_repo ne {}} {
 176                                 $m_repo add command \
 177                                         -command [cb _open_recent_path $path] \
 178                                         -label "    $p"
 179                         }
 180                 }
 181                 $w_recentlist conf -state disabled
 182                 $w_recentlist tag bind link <1> [cb _open_recent %x,%y]
 183                 pack $w_body.space -anchor w -fill x
 184                 pack $w_body.recentlabel -anchor w -fill x
 185                 pack $w_recentlist -anchor w -fill x
 186         }
 187         pack $w_body -fill x -padx 10 -pady 10
 188
 189         ${NS}::frame $w.buttons
 190         set w_next $w.buttons.next
 191         set w_quit $w.buttons.quit
 192         ${NS}::button $w_quit \
 193                 -text [mc "Quit"] \
 194                 -command exit
 195         pack $w_quit -side right -padx 5
 196         pack $w.buttons -side bottom -fill x -padx 10 -pady 10
 197
 198         if {$m_repo ne {}} {
 199                 $m_repo add separator
 200                 $m_repo add command \
 201                         -label [mc Quit] \
 202                         -command exit \
 203                         -accelerator $M1T-Q
 204         }
 205
 206         bind $top <Return> [cb _invoke_next]
 207         bind $top <Visibility> "
 208                 [cb _center]
 209                 grab $top
 210                 focus $top
 211                 bind $top <Visibility> {}
 212         "
 213         wm deiconify $top
 214         tkwait variable @done
 215
 216         grab release $top
 217         if {$top eq {.}} {
 218                 eval destroy [winfo children $top]
 219         }
 220 }
 221
 222 method _center {} {
 223         set nx [winfo reqwidth $top]
 224         set ny [winfo reqheight $top]
 225         set rx [expr {([winfo screenwidth  $top] - $nx) / 3}]
 226         set ry [expr {([winfo screenheight $top] - $ny) / 3}]
 227         wm geometry $top [format {+%d+%d} $rx $ry]
 228 }
 229
 230 method _invoke_next {} {
 231         if {[winfo exists $w_next]} {
 232                 uplevel #0 [$w_next cget -command]
 233         }
 234 }
 235
 236 proc _get_recentrepos {} {
 237         set recent [list]
 238         foreach p [get_config gui.recentrepo] {
 239                 if {[_is_git [file join $p .git]]} {
 240                         lappend recent $p
 241                 } else {
 242                         _unset_recentrepo $p
 243                 }
 244         }
 245         return [lsort $recent]
 246 }
 247
 248 proc _unset_recentrepo {p} {
 249         regsub -all -- {([()\[\]{}\.^$+*?\\])} $p {\\\1} p
 250         git config --global --unset gui.recentrepo "^$p\$"
 251         load_config 1
 252 }
 253
 254 proc _append_recentrepos {path} {
 255         set path [file normalize $path]
 256         set recent [get_config gui.recentrepo]
 257
 258         if {[lindex $recent end] eq $path} {
 259                 return
 260         }
 261
 262         set i [lsearch $recent $path]
 263         if {$i >= 0} {
 264                 _unset_recentrepo $path
 265                 set recent [lreplace $recent $i $i]
 266         }
 267
 268         lappend recent $path
 269         git config --global --add gui.recentrepo $path
 270         load_config 1
 271
 272         if {[set maxrecent [get_config gui.maxrecentrepo]] eq {}} {
 273                 set maxrecent 10
 274         }
 275
 276         while {[llength $recent] > $maxrecent} {
 277                 _unset_recentrepo [lindex $recent 0]
 278                 set recent [lrange $recent 1 end]
 279         }
 280 }
 281
 282 method _open_recent {xy} {
 283         set id [lindex [split [$w_recentlist index @$xy] .] 0]
 284         set local_path [lindex $sorted_recent [expr {$id - 1}]]
 285         _do_open2 $this
 286 }
 287
 288 method _open_recent_path {p} {
 289         set local_path $p
 290         _do_open2 $this
 291 }
 292
 293 method _next {action} {
 294         global NS
 295         destroy $w_body
 296         if {![winfo exists $w_next]} {
 297                 ${NS}::button $w_next -default active
 298                 set pos -before
 299                 if {[tk windowingsystem] eq "win32"} { set pos -after }
 300                 pack $w_next -side right -padx 5 $pos $w_quit
 301         }
 302         _do_$action $this
 303 }
 304
 305 method _write_local_path {args} {
 306         if {$local_path eq {}} {
 307                 $w_next conf -state disabled
 308         } else {
 309                 $w_next conf -state normal
 310         }
 311 }
 312
 313 method _git_init {} {
 314         if {[catch {file mkdir $local_path} err]} {
 315                 error_popup [strcat \
 316                         [mc "Failed to create repository %s:" $local_path] \
 317                         "\n\n$err"]
 318                 return 0
 319         }
 320
 321         if {[catch {cd $local_path} err]} {
 322                 error_popup [strcat \
 323                         [mc "Failed to create repository %s:" $local_path] \
 324                         "\n\n$err"]
 325                 return 0
 326         }
 327
 328         if {[catch {git init} err]} {
 329                 error_popup [strcat \
 330                         [mc "Failed to create repository %s:" $local_path] \
 331                         "\n\n$err"]
 332                 return 0
 333         }
 334
 335         _append_recentrepos [pwd]
 336         set ::_gitdir .git
 337         set ::_prefix {}
 338         return 1
 339 }
 340
 341 proc _is_git {path {outdir_var ""}} {
 342         if {$outdir_var ne ""} {
 343                 upvar 1 $outdir_var outdir
 344         }
 345         if {[file isfile $path]} {
 346                 set fp [open $path r]
 347                 gets $fp line
 348                 close $fp
 349                 if {[regexp "^gitdir: (.+)$" $line line link_target]} {
 350                         set path [file join [file dirname $path] $link_target]
 351                         set path [file normalize $path]
 352                 }
 353         }
 354
 355         if {[file exists [file join $path HEAD]]
 356          && [file exists [file join $path objects]]
 357          && [file exists [file join $path config]]} {
 358                 set outdir $path
 359                 return 1
 360         }
 361         if {[is_Cygwin]} {
 362                 if {[file exists [file join $path HEAD]]
 363                  && [file exists [file join $path objects.lnk]]
 364                  && [file exists [file join $path config.lnk]]} {
 365                         set outdir $path
 366                         return 1
 367                 }
 368         }
 369         return 0
 370 }
 371
 372 proc _objdir {path} {
 373         set objdir [file join $path .git objects]
 374         if {[file isdirectory $objdir]} {
 375                 return $objdir
 376         }
 377
 378         set objdir [file join $path objects]
 379         if {[file isdirectory $objdir]} {
 380                 return $objdir
 381         }
 382
 383         if {[is_Cygwin]} {
 384                 set objdir [file join $path .git objects.lnk]
 385                 if {[file isfile $objdir]} {
 386                         return [win32_read_lnk $objdir]
 387                 }
 388
 389                 set objdir [file join $path objects.lnk]
 390                 if {[file isfile $objdir]} {
 391                         return [win32_read_lnk $objdir]
 392                 }
 393         }
 394
 395         return {}
 396 }
 397
 398 ######################################################################
 399 ##
 400 ## Create New Repository
 401
 402 method _do_new {} {
 403         global use_ttk NS
 404         $w_next conf \
 405                 -state disabled \
 406                 -command [cb _do_new2] \
 407                 -text [mc "Create"]
 408
 409         ${NS}::frame $w_body
 410         ${NS}::label $w_body.h \
 411                 -font font_uibold -anchor center \
 412                 -text [mc "Create New Repository"]
 413         pack $w_body.h -side top -fill x -pady 10
 414         pack $w_body -fill x -padx 10
 415
 416         ${NS}::frame $w_body.where
 417         ${NS}::label $w_body.where.l -text [mc "Directory:"]
 418         ${NS}::entry $w_body.where.t \
 419                 -textvariable @local_path \
 420                 -width 50
 421         ${NS}::button $w_body.where.b \
 422                 -text [mc "Browse"] \
 423                 -command [cb _new_local_path]
 424         set w_localpath $w_body.where.t
 425
 426         grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
 427         pack $w_body.where -fill x
 428
 429         grid columnconfigure $w_body.where 1 -weight 1
 430
 431         trace add variable @local_path write [cb _write_local_path]
 432         bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
 433         update
 434         focus $w_body.where.t
 435 }
 436
 437 method _new_local_path {} {
 438         if {$local_path ne {}} {
 439                 set p [file dirname $local_path]
 440         } else {
 441                 set p [pwd]
 442         }
 443
 444         set p [tk_chooseDirectory \
 445                 -initialdir $p \
 446                 -parent $top \
 447                 -title [mc "Git Repository"] \
 448                 -mustexist false]
 449         if {$p eq {}} return
 450
 451         set p [file normalize $p]
 452         if {![_new_ok $p]} {
 453                 return
 454         }
 455         set local_path $p
 456         $w_localpath icursor end
 457 }
 458
 459 method _do_new2 {} {
 460         if {![_new_ok $local_path]} {
 461                 return
 462         }
 463         if {![_git_init $this]} {
 464                 return
 465         }
 466         set done 1
 467 }
 468
 469 proc _new_ok {p} {
 470         if {[file isdirectory $p]} {
 471                 if {[_is_git [file join $p .git]]} {
 472                         error_popup [mc "Directory %s already exists." $p]
 473                         return 0
 474                 }
 475         } elseif {[file exists $p]} {
 476                 error_popup [mc "File %s already exists." $p]
 477                 return 0
 478         }
 479         return 1
 480 }
 481
 482 ######################################################################
 483 ##
 484 ## Clone Existing Repository
 485
 486 method _do_clone {} {
 487         global use_ttk NS
 488         $w_next conf \
 489                 -state disabled \
 490                 -command [cb _do_clone2] \
 491                 -text [mc "Clone"]
 492
 493         ${NS}::frame $w_body
 494         ${NS}::label $w_body.h \
 495                 -font font_uibold -anchor center \
 496                 -text [mc "Clone Existing Repository"]
 497         pack $w_body.h -side top -fill x -pady 10
 498         pack $w_body -fill x -padx 10
 499
 500         set args $w_body.args
 501         ${NS}::frame $w_body.args
 502         pack $args -fill both
 503
 504         ${NS}::label $args.origin_l -text [mc "Source Location:"]
 505         ${NS}::entry $args.origin_t \
 506                 -textvariable @origin_url \
 507                 -width 50
 508         ${NS}::button $args.origin_b \
 509                 -text [mc "Browse"] \
 510                 -command [cb _open_origin]
 511         grid $args.origin_l $args.origin_t $args.origin_b -sticky ew
 512
 513         ${NS}::label $args.where_l -text [mc "Target Directory:"]
 514         ${NS}::entry $args.where_t \
 515                 -textvariable @local_path \
 516                 -width 50
 517         ${NS}::button $args.where_b \
 518                 -text [mc "Browse"] \
 519                 -command [cb _new_local_path]
 520         grid $args.where_l $args.where_t $args.where_b -sticky ew
 521         set w_localpath $args.where_t
 522
 523         ${NS}::label $args.type_l -text [mc "Clone Type:"]
 524         ${NS}::frame $args.type_f
 525         set w_types [list]
 526         lappend w_types [${NS}::radiobutton $args.type_f.hardlink \
 527                 -state disabled \
 528                 -text [mc "Standard (Fast, Semi-Redundant, Hardlinks)"] \
 529                 -variable @clone_type \
 530                 -value hardlink]
 531         lappend w_types [${NS}::radiobutton $args.type_f.full \
 532                 -state disabled \
 533                 -text [mc "Full Copy (Slower, Redundant Backup)"] \
 534                 -variable @clone_type \
 535                 -value full]
 536         lappend w_types [${NS}::radiobutton $args.type_f.shared \
 537                 -state disabled \
 538                 -text [mc "Shared (Fastest, Not Recommended, No Backup)"] \
 539                 -variable @clone_type \
 540                 -value shared]
 541         foreach r $w_types {
 542                 pack $r -anchor w
 543         }
 544         ${NS}::checkbutton $args.type_f.recursive \
 545                 -text [mc "Recursively clone submodules too"] \
 546                 -variable @recursive \
 547                 -onvalue true -offvalue false
 548         pack $args.type_f.recursive -anchor w
 549         grid $args.type_l $args.type_f -sticky new
 550
 551         grid columnconfigure $args 1 -weight 1
 552
 553         trace add variable @local_path write [cb _update_clone]
 554         trace add variable @origin_url write [cb _update_clone]
 555         bind $w_body.h <Destroy> "
 556                 [list trace remove variable @local_path write [cb _update_clone]]
 557                 [list trace remove variable @origin_url write [cb _update_clone]]
 558         "
 559         update
 560         focus $args.origin_t
 561 }
 562
 563 method _open_origin {} {
 564         if {$origin_url ne {} && [file isdirectory $origin_url]} {
 565                 set p $origin_url
 566         } else {
 567                 set p [pwd]
 568         }
 569
 570         set p [tk_chooseDirectory \
 571                 -initialdir $p \
 572                 -parent $top \
 573                 -title [mc "Git Repository"] \
 574                 -mustexist true]
 575         if {$p eq {}} return
 576
 577         set p [file normalize $p]
 578         if {![_is_git [file join $p .git]] && ![_is_git $p]} {
 579                 error_popup [mc "Not a Git repository: %s" [file tail $p]]
 580                 return
 581         }
 582         set origin_url $p
 583 }
 584
 585 method _update_clone {args} {
 586         if {$local_path ne {} && $origin_url ne {}} {
 587                 $w_next conf -state normal
 588         } else {
 589                 $w_next conf -state disabled
 590         }
 591
 592         if {$origin_url ne {} &&
 593                 (  [_is_git [file join $origin_url .git]]
 594                 || [_is_git $origin_url])} {
 595                 set e normal
 596                 if {[[lindex $w_types 0] cget -state] eq {disabled}} {
 597                         set clone_type hardlink
 598                 }
 599         } else {
 600                 set e disabled
 601                 set clone_type full
 602         }
 603
 604         foreach r $w_types {
 605                 $r conf -state $e
 606         }
 607 }
 608
 609 method _do_clone2 {} {
 610         if {[file isdirectory $origin_url]} {
 611                 set origin_url [file normalize $origin_url]
 612         }
 613
 614         if {$clone_type eq {hardlink} && ![file isdirectory $origin_url]} {
 615                 error_popup [mc "Standard only available for local repository."]
 616                 return
 617         }
 618         if {$clone_type eq {shared} && ![file isdirectory $origin_url]} {
 619                 error_popup [mc "Shared only available for local repository."]
 620                 return
 621         }
 622
 623         if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 624                 set objdir [_objdir $origin_url]
 625                 if {$objdir eq {}} {
 626                         error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 627                         return
 628                 }
 629         }
 630
 631         set giturl $origin_url
 632         if {[is_Cygwin] && [file isdirectory $giturl]} {
 633                 set giturl [exec cygpath --unix --absolute $giturl]
 634                 if {$clone_type eq {shared}} {
 635                         set objdir [exec cygpath --unix --absolute $objdir]
 636                 }
 637         }
 638
 639         if {[file exists $local_path]} {
 640                 error_popup [mc "Location %s already exists." $local_path]
 641                 return
 642         }
 643
 644         if {![_git_init $this]} return
 645         set local_path [pwd]
 646
 647         if {[catch {
 648                         git config remote.$origin_name.url $giturl
 649                         git config remote.$origin_name.fetch +refs/heads/*:refs/remotes/$origin_name/*
 650                 } err]} {
 651                 error_popup [strcat [mc "Failed to configure origin"] "\n\n$err"]
 652                 return
 653         }
 654
 655         destroy $w_body $w_next
 656
 657         switch -exact -- $clone_type {
 658         hardlink {
 659                 set o_cons [status_bar::two_line $w_body]
 660                 pack $w_body -fill x -padx 10 -pady 10
 661
 662                 $o_cons start \
 663                         [mc "Counting objects"] \
 664                         [mc "buckets"]
 665                 update
 666
 667                 if {[file exists [file join $objdir info alternates]]} {
 668                         set pwd [pwd]
 669                         if {[catch {
 670                                 file mkdir [gitdir objects info]
 671                                 set f_in [open [file join $objdir info alternates] r]
 672                                 set f_cp [open [gitdir objects info alternates] w]
 673                                 fconfigure $f_in -translation binary -encoding binary
 674                                 fconfigure $f_cp -translation binary -encoding binary
 675                                 cd $objdir
 676                                 while {[gets $f_in line] >= 0} {
 677                                         if {[is_Cygwin]} {
 678                                                 puts $f_cp [exec cygpath --unix --absolute $line]
 679                                         } else {
 680                                                 puts $f_cp [file normalize $line]
 681                                         }
 682                                 }
 683                                 close $f_in
 684                                 close $f_cp
 685                                 cd $pwd
 686                         } err]} {
 687                                 catch {cd $pwd}
 688                                 _clone_failed $this [mc "Unable to copy objects/info/alternates: %s" $err]
 689                                 return
 690                         }
 691                 }
 692
 693                 set tolink  [list]
 694                 set buckets [glob \
 695                         -tails \
 696                         -nocomplain \
 697                         -directory [file join $objdir] ??]
 698                 set bcnt [expr {[llength $buckets] + 2}]
 699                 set bcur 1
 700                 $o_cons update $bcur $bcnt
 701                 update
 702
 703                 file mkdir [file join .git objects pack]
 704                 foreach i [glob -tails -nocomplain \
 705                         -directory [file join $objdir pack] *] {
 706                         lappend tolink [file join pack $i]
 707                 }
 708                 $o_cons update [incr bcur] $bcnt
 709                 update
 710
 711                 foreach i $buckets {
 712                         file mkdir [file join .git objects $i]
 713                         foreach j [glob -tails -nocomplain \
 714                                 -directory [file join $objdir $i] *] {
 715                                 lappend tolink [file join $i $j]
 716                         }
 717                         $o_cons update [incr bcur] $bcnt
 718                         update
 719                 }
 720                 $o_cons stop
 721
 722                 if {$tolink eq {}} {
 723                         info_popup [strcat \
 724                                 [mc "Nothing to clone from %s." $origin_url] \
 725                                 "\n" \
 726                                 [mc "The 'master' branch has not been initialized."] \
 727                                 ]
 728                         destroy $w_body
 729                         set done 1
 730                         return
 731                 }
 732
 733                 set i [lindex $tolink 0]
 734                 if {[catch {
 735                                 file link -hard \
 736                                         [file join .git objects $i] \
 737                                         [file join $objdir $i]
 738                         } err]} {
 739                         info_popup [mc "Hardlinks are unavailable.  Falling back to copying."]
 740                         set i [_copy_files $this $objdir $tolink]
 741                 } else {
 742                         set i [_link_files $this $objdir [lrange $tolink 1 end]]
 743                 }
 744                 if {!$i} return
 745
 746                 destroy $w_body
 747         }
 748         full {
 749                 set o_cons [console::embed \
 750                         $w_body \
 751                         [mc "Cloning from %s" $origin_url]]
 752                 pack $w_body -fill both -expand 1 -padx 10
 753                 $o_cons exec \
 754                         [list git fetch --no-tags -k $origin_name] \
 755                         [cb _do_clone_tags]
 756         }
 757         shared {
 758                 set fd [open [gitdir objects info alternates] w]
 759                 fconfigure $fd -translation binary
 760                 puts $fd $objdir
 761                 close $fd
 762         }
 763         }
 764
 765         if {$clone_type eq {hardlink} || $clone_type eq {shared}} {
 766                 if {![_clone_refs $this]} return
 767                 set pwd [pwd]
 768                 if {[catch {
 769                                 cd $origin_url
 770                                 set HEAD [git rev-parse --verify HEAD^0]
 771                         } err]} {
 772                         _clone_failed $this [mc "Not a Git repository: %s" [file tail $origin_url]]
 773                         return 0
 774                 }
 775                 cd $pwd
 776                 _do_clone_checkout $this $HEAD
 777         }
 778 }
 779
 780 method _copy_files {objdir tocopy} {
 781         $o_cons start \
 782                 [mc "Copying objects"] \
 783                 [mc "KiB"]
 784         set tot 0
 785         set cmp 0
 786         foreach p $tocopy {
 787                 incr tot [file size [file join $objdir $p]]
 788         }
 789         foreach p $tocopy {
 790                 if {[catch {
 791                                 set f_in [open [file join $objdir $p] r]
 792                                 set f_cp [open [file join .git objects $p] w]
 793                                 fconfigure $f_in -translation binary -encoding binary
 794                                 fconfigure $f_cp -translation binary -encoding binary
 795
 796                                 while {![eof $f_in]} {
 797                                         incr cmp [fcopy $f_in $f_cp -size 16384]
 798                                         $o_cons update \
 799                                                 [expr {$cmp / 1024}] \
 800                                                 [expr {$tot / 1024}]
 801                                         update
 802                                 }
 803
 804                                 close $f_in
 805                                 close $f_cp
 806                         } err]} {
 807                         _clone_failed $this [mc "Unable to copy object: %s" $err]
 808                         return 0
 809                 }
 810         }
 811         return 1
 812 }
 813
 814 method _link_files {objdir tolink} {
 815         set total [llength $tolink]
 816         $o_cons start \
 817                 [mc "Linking objects"] \
 818                 [mc "objects"]
 819         for {set i 0} {$i < $total} {} {
 820                 set p [lindex $tolink $i]
 821                 if {[catch {
 822                                 file link -hard \
 823                                         [file join .git objects $p] \
 824                                         [file join $objdir $p]
 825                         } err]} {
 826                         _clone_failed $this [mc "Unable to hardlink object: %s" $err]
 827                         return 0
 828                 }
 829
 830                 incr i
 831                 if {$i % 5 == 0} {
 832                         $o_cons update $i $total
 833                         update
 834                 }
 835         }
 836         return 1
 837 }
 838
 839 method _clone_refs {} {
 840         set pwd [pwd]
 841         if {[catch {cd $origin_url} err]} {
 842                 error_popup [mc "Not a Git repository: %s" [file tail $origin_url]]
 843                 return 0
 844         }
 845         set fd_in [git_read for-each-ref \
 846                 --tcl \
 847                 {--format=list %(refname) %(objectname) %(*objectname)}]
 848         cd $pwd
 849
 850         set fd [open [gitdir packed-refs] w]
 851         fconfigure $fd -translation binary
 852         puts $fd "# pack-refs with: peeled"
 853         while {[gets $fd_in line] >= 0} {
 854                 set line [eval $line]
 855                 set refn [lindex $line 0]
 856                 set robj [lindex $line 1]
 857                 set tobj [lindex $line 2]
 858
 859                 if {[regsub ^refs/heads/ $refn \
 860                         "refs/remotes/$origin_name/" refn]} {
 861                         puts $fd "$robj $refn"
 862                 } elseif {[string match refs/tags/* $refn]} {
 863                         puts $fd "$robj $refn"
 864                         if {$tobj ne {}} {
 865                                 puts $fd "^$tobj"
 866                         }
 867                 }
 868         }
 869         close $fd_in
 870         close $fd
 871         return 1
 872 }
 873
 874 method _do_clone_tags {ok} {
 875         if {$ok} {
 876                 $o_cons exec \
 877                         [list git fetch --tags -k $origin_name] \
 878                         [cb _do_clone_HEAD]
 879         } else {
 880                 $o_cons done $ok
 881                 _clone_failed $this [mc "Cannot fetch branches and objects.  See console output for details."]
 882         }
 883 }
 884
 885 method _do_clone_HEAD {ok} {
 886         if {$ok} {
 887                 $o_cons exec \
 888                         [list git fetch $origin_name HEAD] \
 889                         [cb _do_clone_full_end]
 890         } else {
 891                 $o_cons done $ok
 892                 _clone_failed $this [mc "Cannot fetch tags.  See console output for details."]
 893         }
 894 }
 895
 896 method _do_clone_full_end {ok} {
 897         $o_cons done $ok
 898
 899         if {$ok} {
 900                 destroy $w_body
 901
 902                 set HEAD {}
 903                 if {[file exists [gitdir FETCH_HEAD]]} {
 904                         set fd [open [gitdir FETCH_HEAD] r]
 905                         while {[gets $fd line] >= 0} {
 906                                 if {[regexp "^(.{40})\t\t" $line line HEAD]} {
 907                                         break
 908                                 }
 909                         }
 910                         close $fd
 911                 }
 912
 913                 catch {git pack-refs}
 914                 _do_clone_checkout $this $HEAD
 915         } else {
 916                 _clone_failed $this [mc "Cannot determine HEAD.  See console output for details."]
 917         }
 918 }
 919
 920 method _clone_failed {{why {}}} {
 921         if {[catch {file delete -force $local_path} err]} {
 922                 set why [strcat \
 923                         $why \
 924                         "\n\n" \
 925                         [mc "Unable to cleanup %s" $local_path] \
 926                         "\n\n" \
 927                         $err]
 928         }
 929         if {$why ne {}} {
 930                 update
 931                 error_popup [strcat [mc "Clone failed."] "\n" $why]
 932         }
 933 }
 934
 935 method _do_clone_checkout {HEAD} {
 936         if {$HEAD eq {}} {
 937                 info_popup [strcat \
 938                         [mc "No default branch obtained."] \
 939                         "\n" \
 940                         [mc "The 'master' branch has not been initialized."] \
 941                         ]
 942                 set done 1
 943                 return
 944         }
 945         if {[catch {
 946                         git update-ref HEAD $HEAD^0
 947                 } err]} {
 948                 info_popup [strcat \
 949                         [mc "Cannot resolve %s as a commit." $HEAD^0] \
 950                         "\n  $err" \
 951                         "\n" \
 952                         [mc "The 'master' branch has not been initialized."] \
 953                         ]
 954                 set done 1
 955                 return
 956         }
 957
 958         set o_cons [status_bar::two_line $w_body]
 959         pack $w_body -fill x -padx 10 -pady 10
 960         $o_cons start \
 961                 [mc "Creating working directory"] \
 962                 [mc "files"]
 963
 964         set readtree_err {}
 965         set fd [git_read --stderr read-tree \
 966                 -m \
 967                 -u \
 968                 -v \
 969                 HEAD \
 970                 HEAD \
 971                 ]
 972         fconfigure $fd -blocking 0 -translation binary
 973         fileevent $fd readable [cb _readtree_wait $fd]
 974 }
 975
 976 method _do_validate_submodule_cloning {ok} {
 977         if {$ok} {
 978                 $o_cons done $ok
 979                 set done 1
 980         } else {
 981                 _clone_failed $this [mc "Cannot clone submodules."]
 982         }
 983 }
 984
 985 method _do_clone_submodules {} {
 986         if {$recursive eq {true}} {
 987                 destroy $w_body
 988                 set o_cons [console::embed \
 989                         $w_body \
 990                         [mc "Cloning submodules"]]
 991                 pack $w_body -fill both -expand 1 -padx 10
 992                 $o_cons exec \
 993                         [list git submodule update --init --recursive] \
 994                         [cb _do_validate_submodule_cloning]
 995         } else {
 996                 set done 1
 997         }
 998 }
 999
1000 method _readtree_wait {fd} {
1001         set buf [read $fd]
1002         $o_cons update_meter $buf
1003         append readtree_err $buf
1004
1005         fconfigure $fd -blocking 1
1006         if {![eof $fd]} {
1007                 fconfigure $fd -blocking 0
1008                 return
1009         }
1010
1011         if {[catch {close $fd}]} {
1012                 set err $readtree_err
1013                 regsub {^fatal: } $err {} err
1014                 error_popup [strcat \
1015                         [mc "Initial file checkout failed."] \
1016                         "\n\n$err"]
1017                 return
1018         }
1019
1020         # -- Run the post-checkout hook.
1021         #
1022         set fd_ph [githook_read post-checkout [string repeat 0 40] \
1023                 [git rev-parse HEAD] 1]
1024         if {$fd_ph ne {}} {
1025                 global pch_error
1026                 set pch_error {}
1027                 fconfigure $fd_ph -blocking 0 -translation binary -eofchar {}
1028                 fileevent $fd_ph readable [cb _postcheckout_wait $fd_ph]
1029         } else {
1030                 _do_clone_submodules $this
1031         }
1032 }
1033
1034 method _postcheckout_wait {fd_ph} {
1035         global pch_error
1036
1037         append pch_error [read $fd_ph]
1038         fconfigure $fd_ph -blocking 1
1039         if {[eof $fd_ph]} {
1040                 if {[catch {close $fd_ph}]} {
1041                         hook_failed_popup post-checkout $pch_error 0
1042                 }
1043                 unset pch_error
1044                 _do_clone_submodules $this
1045                 return
1046         }
1047         fconfigure $fd_ph -blocking 0
1048 }
1049
1050 ######################################################################
1051 ##
1052 ## Open Existing Repository
1053
1054 method _do_open {} {
1055         global NS
1056         $w_next conf \
1057                 -state disabled \
1058                 -command [cb _do_open2] \
1059                 -text [mc "Open"]
1060
1061         ${NS}::frame $w_body
1062         ${NS}::label $w_body.h \
1063                 -font font_uibold -anchor center \
1064                 -text [mc "Open Existing Repository"]
1065         pack $w_body.h -side top -fill x -pady 10
1066         pack $w_body -fill x -padx 10
1067
1068         ${NS}::frame $w_body.where
1069         ${NS}::label $w_body.where.l -text [mc "Repository:"]
1070         ${NS}::entry $w_body.where.t \
1071                 -textvariable @local_path \
1072                 -width 50
1073         ${NS}::button $w_body.where.b \
1074                 -text [mc "Browse"] \
1075                 -command [cb _open_local_path]
1076
1077         grid $w_body.where.l $w_body.where.t $w_body.where.b -sticky ew
1078         pack $w_body.where -fill x
1079
1080         grid columnconfigure $w_body.where 1 -weight 1
1081
1082         trace add variable @local_path write [cb _write_local_path]
1083         bind $w_body.h <Destroy> [list trace remove variable @local_path write [cb _write_local_path]]
1084         update
1085         focus $w_body.where.t
1086 }
1087
1088 method _open_local_path {} {
1089         if {$local_path ne {}} {
1090                 set p $local_path
1091         } else {
1092                 set p [pwd]
1093         }
1094
1095         set p [tk_chooseDirectory \
1096                 -initialdir $p \
1097                 -parent $top \
1098                 -title [mc "Git Repository"] \
1099                 -mustexist true]
1100         if {$p eq {}} return
1101
1102         set p [file normalize $p]
1103         if {![_is_git [file join $p .git]]} {
1104                 error_popup [mc "Not a Git repository: %s" [file tail $p]]
1105                 return
1106         }
1107         set local_path $p
1108 }
1109
1110 method _do_open2 {} {
1111         if {![_is_git [file join $local_path .git] actualgit]} {
1112                 error_popup [mc "Not a Git repository: %s" [file tail $local_path]]
1113                 return
1114         }
1115
1116         if {[catch {cd $local_path} err]} {
1117                 error_popup [strcat \
1118                         [mc "Failed to open repository %s:" $local_path] \
1119                         "\n\n$err"]
1120                 return
1121         }
1122
1123         _append_recentrepos [pwd]
1124         set ::_gitdir $actualgit
1125         set ::_prefix {}
1126         set done 1
1127 }
1128
1129 }