git-gui: Support starting gitk from Gui Blame

Add a context menu command to load commits
that are within a certain time range from the
selected commit into gitk.

It can be useful for understanding of the code,
especially if the repository is imported from
a VCS that does not support atomic commits.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/git-gui.sh b/git-gui.sh
index 8ad6567edd465bde71ad336042cf2ae4008ed86e..b0207ac36a7c905b909e764df9741b2d12432b96 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -668,6 +668,7 @@ set default_config(gui.pruneduringfetch) false
 set default_config(gui.trustmtime) false
 set default_config(gui.fastcopyblame) false
 set default_config(gui.copyblamethreshold) 40
+set default_config(gui.blamehistoryctx) 7
 set default_config(gui.diffcontext) 5
 set default_config(gui.commitmsgwidth) 75
 set default_config(gui.newbranchtemplate) {}

diff --git a/lib/blame.tcl b/lib/blame.tcl
index b6e42cbc8fe0a49c301335f78cc2941bd9d59870..c8975cfecdbe5dd4cf00a458d5b07a6ff9840f8c 100644 (file)
--- a/lib/blame.tcl
+++ b/lib/blame.tcl
@@ -259,6 +259,9 @@ constructor new {i_commit i_path} {
        $w.ctxm add command \
                -label [mc "Do Full Copy Detection"] \
                -command [cb _fullcopyblame]
+       $w.ctxm add command \
+               -label [mc "Show History Context"] \
+               -command [cb _gitkcommit]
 
        foreach i $w_columns {
                for {set g 0} {$g < [llength $group_colors]} {incr g} {
@@ -905,10 +908,14 @@ method _showcommit {cur_w lno} {
        }
 }
 
-method _copycommit {} {
+method _get_click_amov_info {} {
        set pos @$::cursorX,$::cursorY
        set lno [lindex [split [$::cursorW index $pos] .] 0]
-       set dat [lindex $amov_data $lno]
+       return [lindex $amov_data $lno]
+}
+
+method _copycommit {} {
+       set dat [_get_click_amov_info $this]
        if {$dat ne {}} {
                clipboard clear
                clipboard append \
@@ -918,6 +925,50 @@ method _copycommit {} {
        }
 }
 
+method _format_offset_date {base offset} {
+       set exval [expr {$base + $offset*24*60*60}]
+       return [clock format $exval -format {%Y-%m-%d}]
+}
+
+method _gitkcommit {} {
+       set dat [_get_click_amov_info $this]
+       if {$dat ne {}} {
+               set cmit [lindex $dat 0]
+               set radius [get_config gui.blamehistoryctx]
+               set cmdline [list --select-commit=$cmit]
+
+                if {$radius > 0} {
+                       set author_time {}
+                       set committer_time {}
+
+                       catch {set author_time $header($cmit,author-time)}
+                       catch {set committer_time $header($cmit,committer-time)}
+
+                       if {$committer_time eq {}} {
+                               set committer_time $author_time
+                       }
+
+                       set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
+                       set before_time [_format_offset_date $this $committer_time $radius]
+
+                       lappend cmdline --after=$after_time --before=$before_time
+               }
+
+               lappend cmdline $cmit
+
+               set base_rev "HEAD"
+               if {$commit ne {}} {
+                       set base_rev $commit
+               }
+
+               if {$base_rev ne $cmit} {
+                       lappend cmdline $base_rev
+               }
+
+               do_gitk $cmdline
+       }
+}
+
 method _show_tooltip {cur_w pos} {
        if {$tooltip_wm ne {}} {
                _open_tooltip $this $cur_w

diff --git a/lib/option.tcl b/lib/option.tcl
index ffb3f00ff0a992254804cc047b5a63ce82aa5bd9..eb958ffd47bf6b4be5b61a45191079dff99331a2 100644 (file)
--- a/lib/option.tcl
+++ b/lib/option.tcl
@@ -125,6 +125,7 @@ proc do_options {} {
                {b gui.matchtrackingbranch {mc "Match Tracking Branches"}}
                {b gui.fastcopyblame {mc "Blame Copy Only On Changed Files"}}
                {i-20..200 gui.copyblamethreshold {mc "Minimum Letters To Blame Copy On"}}
+               {i-0..300 gui.blamehistoryctx {mc "Blame History Context Radius (days)"}}
                {i-0..99 gui.diffcontext {mc "Number of Diff Context Lines"}}
                {i-0..99 gui.commitmsgwidth {mc "Commit Message Text Width"}}
                {t gui.newbranchtemplate {mc "New Branch Name Template"}}