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-rw-r--r--git-gui/lib/index.tcl753
1 files changed, 753 insertions, 0 deletions
diff --git a/git-gui/lib/index.tcl b/git-gui/lib/index.tcl
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+# git-gui index (add/remove) support
+# Copyright (C) 2006, 2007 Shawn Pearce
+
+proc _delete_indexlock {} {
+ if {[catch {file delete -- [gitdir index.lock]} err]} {
+ error_popup [strcat [mc "Unable to unlock the index."] "\n\n$err"]
+ }
+}
+
+proc close_and_unlock_index {fd after} {
+ if {![catch {_close_updateindex $fd} err]} {
+ unlock_index
+ uplevel #0 $after
+ } else {
+ rescan_on_error $err $after
+ }
+}
+
+proc _close_updateindex {fd} {
+ fconfigure $fd -blocking 1
+ close $fd
+}
+
+proc rescan_on_error {err {after {}}} {
+ global use_ttk NS
+
+ set w .indexfried
+ Dialog $w
+ wm withdraw $w
+ wm title $w [strcat "[appname] ([reponame]): " [mc "Index Error"]]
+ wm geometry $w "+[winfo rootx .]+[winfo rooty .]"
+ set s [mc "Updating the Git index failed. A rescan will be automatically started to resynchronize git-gui."]
+ text $w.msg -yscrollcommand [list $w.vs set] \
+ -width [string length $s] -relief flat \
+ -borderwidth 0 -highlightthickness 0 \
+ -background [get_bg_color $w]
+ $w.msg tag configure bold -font font_uibold -justify center
+ ${NS}::scrollbar $w.vs -command [list $w.msg yview]
+ $w.msg insert end $s bold \n\n$err {}
+ $w.msg configure -state disabled
+
+ ${NS}::button $w.continue \
+ -text [mc "Continue"] \
+ -command [list destroy $w]
+ ${NS}::button $w.unlock \
+ -text [mc "Unlock Index"] \
+ -command "destroy $w; _delete_indexlock"
+ grid $w.msg - $w.vs -sticky news
+ grid $w.unlock $w.continue - -sticky se -padx 2 -pady 2
+ grid columnconfigure $w 0 -weight 1
+ grid rowconfigure $w 0 -weight 1
+
+ wm protocol $w WM_DELETE_WINDOW update
+ bind $w.continue <Visibility> "
+ grab $w
+ focus %W
+ "
+ wm deiconify $w
+ tkwait window $w
+
+ $::main_status stop_all
+ unlock_index
+ rescan [concat $after {ui_ready;}] 0
+}
+
+proc update_indexinfo {msg path_list after} {
+ global update_index_cp
+
+ if {![lock_index update]} return
+
+ set update_index_cp 0
+ set path_list [lsort $path_list]
+ set total_cnt [llength $path_list]
+ set batch [expr {int($total_cnt * .01) + 1}]
+ if {$batch > 25} {set batch 25}
+
+ set status_bar_operation [$::main_status start $msg [mc "files"]]
+ set fd [git_write update-index -z --index-info]
+ fconfigure $fd \
+ -blocking 0 \
+ -buffering full \
+ -buffersize 512 \
+ -encoding binary \
+ -translation binary
+ fileevent $fd writable [list \
+ write_update_indexinfo \
+ $fd \
+ $path_list \
+ $total_cnt \
+ $batch \
+ $status_bar_operation \
+ $after \
+ ]
+}
+
+proc write_update_indexinfo {fd path_list total_cnt batch status_bar_operation \
+ after} {
+ global update_index_cp
+ global file_states current_diff_path
+
+ if {$update_index_cp >= $total_cnt} {
+ $status_bar_operation stop
+ close_and_unlock_index $fd $after
+ return
+ }
+
+ for {set i $batch} \
+ {$update_index_cp < $total_cnt && $i > 0} \
+ {incr i -1} {
+ set path [lindex $path_list $update_index_cp]
+ incr update_index_cp
+
+ set s $file_states($path)
+ switch -glob -- [lindex $s 0] {
+ A? {set new _O}
+ MT -
+ TM -
+ T_ {set new _T}
+ M? {set new _M}
+ TD -
+ D_ {set new _D}
+ D? {set new _?}
+ ?? {continue}
+ }
+ set info [lindex $s 2]
+ if {$info eq {}} continue
+
+ puts -nonewline $fd "$info\t[encoding convertto utf-8 $path]\0"
+ display_file $path $new
+ }
+
+ $status_bar_operation update $update_index_cp $total_cnt
+}
+
+proc update_index {msg path_list after} {
+ global update_index_cp
+
+ if {![lock_index update]} return
+
+ set update_index_cp 0
+ set path_list [lsort $path_list]
+ set total_cnt [llength $path_list]
+ set batch [expr {int($total_cnt * .01) + 1}]
+ if {$batch > 25} {set batch 25}
+
+ set status_bar_operation [$::main_status start $msg [mc "files"]]
+ set fd [git_write update-index --add --remove -z --stdin]
+ fconfigure $fd \
+ -blocking 0 \
+ -buffering full \
+ -buffersize 512 \
+ -encoding binary \
+ -translation binary
+ fileevent $fd writable [list \
+ write_update_index \
+ $fd \
+ $path_list \
+ $total_cnt \
+ $batch \
+ $status_bar_operation \
+ $after \
+ ]
+}
+
+proc write_update_index {fd path_list total_cnt batch status_bar_operation \
+ after} {
+ global update_index_cp
+ global file_states current_diff_path
+
+ if {$update_index_cp >= $total_cnt} {
+ $status_bar_operation stop
+ close_and_unlock_index $fd $after
+ return
+ }
+
+ for {set i $batch} \
+ {$update_index_cp < $total_cnt && $i > 0} \
+ {incr i -1} {
+ set path [lindex $path_list $update_index_cp]
+ incr update_index_cp
+
+ switch -glob -- [lindex $file_states($path) 0] {
+ AD {set new __}
+ ?D {set new D_}
+ _O -
+ AT -
+ AM {set new A_}
+ TM -
+ MT -
+ _T {set new T_}
+ _U -
+ U? {
+ if {[file exists $path]} {
+ set new M_
+ } else {
+ set new D_
+ }
+ }
+ ?M {set new M_}
+ ?? {continue}
+ }
+ puts -nonewline $fd "[encoding convertto utf-8 $path]\0"
+ display_file $path $new
+ }
+
+ $status_bar_operation update $update_index_cp $total_cnt
+}
+
+proc checkout_index {msg path_list after capture_error} {
+ global update_index_cp
+
+ if {![lock_index update]} return
+
+ set update_index_cp 0
+ set path_list [lsort $path_list]
+ set total_cnt [llength $path_list]
+ set batch [expr {int($total_cnt * .01) + 1}]
+ if {$batch > 25} {set batch 25}
+
+ set status_bar_operation [$::main_status start $msg [mc "files"]]
+ set fd [git_write checkout-index \
+ --index \
+ --quiet \
+ --force \
+ -z \
+ --stdin \
+ ]
+ fconfigure $fd \
+ -blocking 0 \
+ -buffering full \
+ -buffersize 512 \
+ -encoding binary \
+ -translation binary
+ fileevent $fd writable [list \
+ write_checkout_index \
+ $fd \
+ $path_list \
+ $total_cnt \
+ $batch \
+ $status_bar_operation \
+ $after \
+ $capture_error \
+ ]
+}
+
+proc write_checkout_index {fd path_list total_cnt batch status_bar_operation \
+ after capture_error} {
+ global update_index_cp
+ global file_states current_diff_path
+
+ if {$update_index_cp >= $total_cnt} {
+ $status_bar_operation stop
+
+ # We do not unlock the index directly here because this
+ # operation expects to potentially run in parallel with file
+ # deletions scheduled by revert_helper. We're done with the
+ # update index, so we close it, but actually unlocking the index
+ # and dealing with potential errors is deferred to the chord
+ # body that runs when all async operations are completed.
+ #
+ # (See after_chord in revert_helper.)
+
+ if {[catch {_close_updateindex $fd} err]} {
+ uplevel #0 $capture_error [list $err]
+ }
+
+ uplevel #0 $after
+
+ return
+ }
+
+ for {set i $batch} \
+ {$update_index_cp < $total_cnt && $i > 0} \
+ {incr i -1} {
+ set path [lindex $path_list $update_index_cp]
+ incr update_index_cp
+ switch -glob -- [lindex $file_states($path) 0] {
+ U? {continue}
+ ?M -
+ ?T -
+ ?D {
+ puts -nonewline $fd "[encoding convertto utf-8 $path]\0"
+ display_file $path ?_
+ }
+ }
+ }
+
+ $status_bar_operation update $update_index_cp $total_cnt
+}
+
+proc unstage_helper {txt paths} {
+ global file_states current_diff_path
+
+ if {![lock_index begin-update]} return
+
+ set path_list [list]
+ set after {}
+ foreach path $paths {
+ switch -glob -- [lindex $file_states($path) 0] {
+ A? -
+ M? -
+ T? -
+ D? {
+ lappend path_list $path
+ if {$path eq $current_diff_path} {
+ set after {reshow_diff;}
+ }
+ }
+ }
+ }
+ if {$path_list eq {}} {
+ unlock_index
+ } else {
+ update_indexinfo \
+ $txt \
+ $path_list \
+ [concat $after {ui_ready;}]
+ }
+}
+
+proc do_unstage_selection {} {
+ global current_diff_path selected_paths
+
+ if {[array size selected_paths] > 0} {
+ unstage_helper \
+ [mc "Unstaging selected files from commit"] \
+ [array names selected_paths]
+ } elseif {$current_diff_path ne {}} {
+ unstage_helper \
+ [mc "Unstaging %s from commit" [short_path $current_diff_path]] \
+ [list $current_diff_path]
+ }
+}
+
+proc add_helper {txt paths} {
+ global file_states current_diff_path
+
+ if {![lock_index begin-update]} return
+
+ set path_list [list]
+ set after {}
+ foreach path $paths {
+ switch -glob -- [lindex $file_states($path) 0] {
+ _U -
+ U? {
+ if {$path eq $current_diff_path} {
+ unlock_index
+ merge_stage_workdir $path
+ return
+ }
+ }
+ _O -
+ ?M -
+ ?D -
+ ?T {
+ lappend path_list $path
+ if {$path eq $current_diff_path} {
+ set after {reshow_diff;}
+ }
+ }
+ }
+ }
+ if {$path_list eq {}} {
+ unlock_index
+ } else {
+ update_index \
+ $txt \
+ $path_list \
+ [concat $after {ui_status [mc "Ready to commit."];}]
+ }
+}
+
+proc do_add_selection {} {
+ global current_diff_path selected_paths
+
+ if {[array size selected_paths] > 0} {
+ add_helper \
+ [mc "Adding selected files"] \
+ [array names selected_paths]
+ } elseif {$current_diff_path ne {}} {
+ add_helper \
+ [mc "Adding %s" [short_path $current_diff_path]] \
+ [list $current_diff_path]
+ }
+}
+
+proc do_add_all {} {
+ global file_states
+
+ set paths [list]
+ set untracked_paths [list]
+ foreach path [array names file_states] {
+ switch -glob -- [lindex $file_states($path) 0] {
+ U? {continue}
+ ?M -
+ ?T -
+ ?D {lappend paths $path}
+ ?O {lappend untracked_paths $path}
+ }
+ }
+ if {[llength $untracked_paths]} {
+ set reply 0
+ switch -- [get_config gui.stageuntracked] {
+ no {
+ set reply 0
+ }
+ yes {
+ set reply 1
+ }
+ ask -
+ default {
+ set reply [ask_popup [mc "Stage %d untracked files?" \
+ [llength $untracked_paths]]]
+ }
+ }
+ if {$reply} {
+ set paths [concat $paths $untracked_paths]
+ }
+ }
+ add_helper [mc "Adding all changed files"] $paths
+}
+
+# Copied from TclLib package "lambda".
+proc lambda {arguments body args} {
+ return [list ::apply [list $arguments $body] {*}$args]
+}
+
+proc revert_helper {txt paths} {
+ global file_states current_diff_path
+
+ if {![lock_index begin-update]} return
+
+ # Common "after" functionality that waits until multiple asynchronous
+ # operations are complete (by waiting for them to activate their notes
+ # on the chord).
+ #
+ # The asynchronous operations are each indicated below by a comment
+ # before the code block that starts the async operation.
+ set after_chord [SimpleChord::new {
+ if {[string trim $err] != ""} {
+ rescan_on_error $err
+ } else {
+ unlock_index
+ if {$should_reshow_diff} { reshow_diff }
+ ui_ready
+ }
+ }]
+
+ $after_chord eval { set should_reshow_diff 0 }
+
+ # This function captures an error for processing when after_chord is
+ # completed. (The chord is curried into the lambda function.)
+ set capture_error [lambda \
+ {chord error} \
+ { $chord eval [list set err $error] } \
+ $after_chord]
+
+ # We don't know how many notes we're going to create (it's dynamic based
+ # on conditional paths below), so create a common note that will delay
+ # the chord's completion until we activate it, and then activate it
+ # after all the other notes have been created.
+ set after_common_note [$after_chord add_note]
+
+ set path_list [list]
+ set untracked_list [list]
+
+ foreach path $paths {
+ switch -glob -- [lindex $file_states($path) 0] {
+ U? {continue}
+ ?O {
+ lappend untracked_list $path
+ }
+ ?M -
+ ?T -
+ ?D {
+ lappend path_list $path
+ if {$path eq $current_diff_path} {
+ $after_chord eval { set should_reshow_diff 1 }
+ }
+ }
+ }
+ }
+
+ set path_cnt [llength $path_list]
+ set untracked_cnt [llength $untracked_list]
+
+ # Asynchronous operation: revert changes by checking them out afresh
+ # from the index.
+ if {$path_cnt > 0} {
+ # Split question between singular and plural cases, because
+ # such distinction is needed in some languages. Previously, the
+ # code used "Revert changes in" for both, but that can't work
+ # in languages where 'in' must be combined with word from
+ # rest of string (in different way for both cases of course).
+ #
+ # FIXME: Unfortunately, even that isn't enough in some languages
+ # as they have quite complex plural-form rules. Unfortunately,
+ # msgcat doesn't seem to support that kind of string
+ # translation.
+ #
+ if {$path_cnt == 1} {
+ set query [mc \
+ "Revert changes in file %s?" \
+ [short_path [lindex $path_list]] \
+ ]
+ } else {
+ set query [mc \
+ "Revert changes in these %i files?" \
+ $path_cnt]
+ }
+
+ set reply [tk_dialog \
+ .confirm_revert \
+ "[appname] ([reponame])" \
+ "$query
+
+[mc "Any unstaged changes will be permanently lost by the revert."]" \
+ question \
+ 1 \
+ [mc "Do Nothing"] \
+ [mc "Revert Changes"] \
+ ]
+
+ if {$reply == 1} {
+ set note [$after_chord add_note]
+ checkout_index \
+ $txt \
+ $path_list \
+ [list $note activate] \
+ $capture_error
+ }
+ }
+
+ # Asynchronous operation: Deletion of untracked files.
+ if {$untracked_cnt > 0} {
+ # Split question between singular and plural cases, because
+ # such distinction is needed in some languages.
+ #
+ # FIXME: Unfortunately, even that isn't enough in some languages
+ # as they have quite complex plural-form rules. Unfortunately,
+ # msgcat doesn't seem to support that kind of string
+ # translation.
+ #
+ if {$untracked_cnt == 1} {
+ set query [mc \
+ "Delete untracked file %s?" \
+ [short_path [lindex $untracked_list]] \
+ ]
+ } else {
+ set query [mc \
+ "Delete these %i untracked files?" \
+ $untracked_cnt \
+ ]
+ }
+
+ set reply [tk_dialog \
+ .confirm_revert \
+ "[appname] ([reponame])" \
+ "$query
+
+[mc "Files will be permanently deleted."]" \
+ question \
+ 1 \
+ [mc "Do Nothing"] \
+ [mc "Delete Files"] \
+ ]
+
+ if {$reply == 1} {
+ $after_chord eval { set should_reshow_diff 1 }
+
+ set note [$after_chord add_note]
+ delete_files $untracked_list [list $note activate]
+ }
+ }
+
+ # Activate the common note. If no other notes were created, this
+ # completes the chord. If other notes were created, then this common
+ # note prevents a race condition where the chord might complete early.
+ $after_common_note activate
+}
+
+# Delete all of the specified files, performing deletion in batches to allow the
+# UI to remain responsive and updated.
+proc delete_files {path_list after} {
+ # Enable progress bar status updates
+ set status_bar_operation [$::main_status \
+ start \
+ [mc "Deleting"] \
+ [mc "files"]]
+
+ set path_index 0
+ set deletion_errors [list]
+ set batch_size 50
+
+ delete_helper \
+ $path_list \
+ $path_index \
+ $deletion_errors \
+ $batch_size \
+ $status_bar_operation \
+ $after
+}
+
+# Helper function to delete a list of files in batches. Each call deletes one
+# batch of files, and then schedules a call for the next batch after any UI
+# messages have been processed.
+proc delete_helper {path_list path_index deletion_errors batch_size \
+ status_bar_operation after} {
+ global file_states
+
+ set path_cnt [llength $path_list]
+
+ set batch_remaining $batch_size
+
+ while {$batch_remaining > 0} {
+ if {$path_index >= $path_cnt} { break }
+
+ set path [lindex $path_list $path_index]
+
+ set deletion_failed [catch {file delete -- $path} deletion_error]
+
+ if {$deletion_failed} {
+ lappend deletion_errors [list "$deletion_error"]
+ } else {
+ remove_empty_directories [file dirname $path]
+
+ # Don't assume the deletion worked. Remove the file from
+ # the UI, but only if it no longer exists.
+ if {![path_exists $path]} {
+ unset file_states($path)
+ display_file $path __
+ }
+ }
+
+ incr path_index 1
+ incr batch_remaining -1
+ }
+
+ # Update the progress bar to indicate that this batch has been
+ # completed. The update will be visible when this procedure returns
+ # and allows the UI thread to process messages.
+ $status_bar_operation update $path_index $path_cnt
+
+ if {$path_index < $path_cnt} {
+ # The Tcler's Wiki lists this as the best practice for keeping
+ # a UI active and processing messages during a long-running
+ # operation.
+
+ after idle [list after 0 [list \
+ delete_helper \
+ $path_list \
+ $path_index \
+ $deletion_errors \
+ $batch_size \
+ $status_bar_operation \
+ $after
+ ]]
+ } else {
+ # Finish the status bar operation.
+ $status_bar_operation stop
+
+ # Report error, if any, based on how many deletions failed.
+ set deletion_error_cnt [llength $deletion_errors]
+
+ if {($deletion_error_cnt > 0)
+ && ($deletion_error_cnt <= [MAX_VERBOSE_FILES_IN_DELETION_ERROR])} {
+ set error_text [mc "Encountered errors deleting files:\n"]
+
+ foreach deletion_error $deletion_errors {
+ append error_text "* [lindex $deletion_error 0]\n"
+ }
+
+ error_popup $error_text
+ } elseif {$deletion_error_cnt == $path_cnt} {
+ error_popup [mc \
+ "None of the %d selected files could be deleted." \
+ $path_cnt \
+ ]
+ } elseif {$deletion_error_cnt > 1} {
+ error_popup [mc \
+ "%d of the %d selected files could not be deleted." \
+ $deletion_error_cnt \
+ $path_cnt \
+ ]
+ }
+
+ uplevel #0 $after
+ }
+}
+
+proc MAX_VERBOSE_FILES_IN_DELETION_ERROR {} { return 10; }
+
+# This function is from the TCL documentation:
+#
+# https://wiki.tcl-lang.org/page/file+exists
+#
+# [file exists] returns false if the path does exist but is a symlink to a path
+# that doesn't exist. This proc returns true if the path exists, regardless of
+# whether it is a symlink and whether it is broken.
+proc path_exists {name} {
+ expr {![catch {file lstat $name finfo}]}
+}
+
+# Remove as many empty directories as we can starting at the specified path,
+# walking up the directory tree. If we encounter a directory that is not
+# empty, or if a directory deletion fails, then we stop the operation and
+# return to the caller. Even if this procedure fails to delete any
+# directories at all, it does not report failure.
+proc remove_empty_directories {directory_path} {
+ set parent_path [file dirname $directory_path]
+
+ while {$parent_path != $directory_path} {
+ set contents [glob -nocomplain -dir $directory_path *]
+
+ if {[llength $contents] > 0} { break }
+ if {[catch {file delete -- $directory_path}]} { break }
+
+ set directory_path $parent_path
+ set parent_path [file dirname $directory_path]
+ }
+}
+
+proc do_revert_selection {} {
+ global current_diff_path selected_paths
+
+ if {[array size selected_paths] > 0} {
+ revert_helper \
+ [mc "Reverting selected files"] \
+ [array names selected_paths]
+ } elseif {$current_diff_path ne {}} {
+ revert_helper \
+ [mc "Reverting %s" [short_path $current_diff_path]] \
+ [list $current_diff_path]
+ }
+}
+
+proc do_select_commit_type {} {
+ global commit_type commit_type_is_amend
+
+ if {$commit_type_is_amend == 0
+ && [string match amend* $commit_type]} {
+ create_new_commit
+ } elseif {$commit_type_is_amend == 1
+ && ![string match amend* $commit_type]} {
+ load_last_commit
+
+ # The amend request was rejected...
+ #
+ if {![string match amend* $commit_type]} {
+ set commit_type_is_amend 0
+ }
+ }
+}
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