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Calculate the list of interesting files for a merge.
If there is a GCA for the parents of the merge, then a file is interesting if some parent has a version that is different from both the child and the GCA. If there is no GCA (e.g. for a merge that pulls in an external project) then a file is interesting if the child's version is different from all of the parents. Next step is to actually show the differences for the interesting files...
This commit is contained in:
Paul Mackerras
Paul Mackerras
parent
f06548617d
commit
3c461ffe88
1 changed files with 138 additions and 52 deletions
190
gitk
190
gitk
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@ -1504,7 +1504,7 @@ proc donefilediff {} {
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}
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proc findcont {ids} {
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global findids treediffs parents nparents treepending
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global findids treediffs parents nparents
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global ffileline findstartline finddidsel
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global lineid numcommits matchinglines findinprogress
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global findmergefiles
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@ -1692,33 +1692,10 @@ proc selectline {l} {
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$cflist delete 0 end
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$cflist insert end "Comments"
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startdiff $id $parents($id)
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}
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proc startdiff {id vs} {
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global diffpending diffpindex
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global diffindex difffilestart
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global curdifftag curtagstart
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set diffpending $vs
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set diffpindex 0
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set diffindex 0
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catch {unset difffilestart}
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set curdifftag Comments
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set curtagstart 0.0
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contdiff [list $id [lindex $vs 0]]
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}
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proc contdiff {ids} {
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global treediffs diffids treepending
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set diffids $ids
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if {![info exists treediffs($ids)]} {
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if {![info exists treepending]} {
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gettreediffs $ids
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}
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} else {
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addtocflist $ids
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if {$nparents($id) == 1} {
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startdiff [concat $id $parents($id)]
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} elseif {$nparents($id) > 1} {
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mergediff $id
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}
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}
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@ -1730,39 +1707,148 @@ proc selnextline {dir} {
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selectline $l
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}
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proc addtocflist {ids} {
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global treediffs cflist diffpindex
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proc mergediff {id} {
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global parents diffmergeid diffmergegca mergefilelist diffpindex
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set colors {black blue green red cyan magenta}
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set color [lindex $colors [expr {$diffpindex % [llength $colors]}]]
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set diffmergeid $id
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set diffpindex -1
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set diffmergegca [findgca $parents($id)]
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if {[info exists mergefilelist($id)]} {
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showmergediff
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} else {
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contmergediff {}
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}
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}
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proc findgca {ids} {
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set gca {}
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foreach id $ids {
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if {$gca eq {}} {
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set gca $id
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} else {
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if {[catch {
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set gca [exec git-merge-base $gca $id]
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} err]} {
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return {}
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}
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}
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}
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return $gca
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}
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proc contmergediff {ids} {
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global diffmergeid diffpindex parents nparents diffmergegca
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global treediffs mergefilelist diffids
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# diff the child against each of the parents, and diff
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# each of the parents against the GCA.
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while 1 {
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if {[lindex $ids 0] == $diffmergeid && $diffmergegca ne {}} {
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set ids [list [lindex $ids 1] $diffmergegca]
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} else {
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if {[incr diffpindex] >= $nparents($diffmergeid)} break
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set p [lindex $parents($diffmergeid) $diffpindex]
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set ids [list $diffmergeid $p]
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}
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if {![info exists treediffs($ids)]} {
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set diffids $ids
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gettreediffs $ids
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return
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}
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}
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# If a file in some parent is different from the child and also
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# different from the GCA, then it's interesting.
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# If we don't have a GCA, then a file is interesting if it is
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# different from the child in all the parents.
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if {$diffmergegca ne {}} {
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set files {}
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foreach p $parents($diffmergeid) {
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set gcadiffs $treediffs([list $p $diffmergegca])
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foreach f $treediffs([list $diffmergeid $p]) {
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if {[lsearch -exact $files $f] < 0
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&& [lsearch -exact $gcadiffs $f] >= 0} {
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lappend files $f
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}
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}
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}
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set files [lsort $files]
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} else {
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set p [lindex $parents($diffmergeid) 0]
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set files $treediffs([list $diffmergeid $p])
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for {set i 1} {$i < $nparents($diffmergeid) && $files ne {}} {incr i} {
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set p [lindex $parents($diffmergeid) $i]
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set df $treediffs([list $diffmergeid $p])
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set nf {}
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foreach f $files {
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if {[lsearch -exact $df $f] >= 0} {
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lappend nf $f
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}
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}
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set files $nf
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}
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}
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set mergefilelist($diffmergeid) $files
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showmergediff
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}
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proc showmergediff {} {
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global cflist diffmergeid mergefilelist
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set files $mergefilelist($diffmergeid)
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foreach f $files {
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$cflist insert end $f
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}
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}
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proc startdiff {ids} {
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global treediffs diffids treepending diffmergeid
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set diffids $ids
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catch {unset diffmergeid}
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if {![info exists treediffs($ids)]} {
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if {![info exists treepending]} {
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gettreediffs $ids
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}
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} else {
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addtocflist $ids
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}
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}
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proc addtocflist {ids} {
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global treediffs cflist
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foreach f $treediffs($ids) {
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$cflist insert end $f
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$cflist itemconf end -foreground $color
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}
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getblobdiffs $ids
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}
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proc gettreediffs {ids} {
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global treediffs parents treepending
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global treediff parents treepending
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set treepending $ids
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set treediffs($ids) {}
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set treediff {}
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set id [lindex $ids 0]
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set p [lindex $ids 1]
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if [catch {set gdtf [open "|git-diff-tree -r $p $id" r]}] return
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fconfigure $gdtf -blocking 0
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fileevent $gdtf readable "gettreediffline $gdtf {$ids}"
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fileevent $gdtf readable [list gettreediffline $gdtf $ids]
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}
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proc gettreediffline {gdtf ids} {
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global treediffs treepending diffids
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global treediff treediffs treepending diffids diffmergeid
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set n [gets $gdtf line]
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if {$n < 0} {
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if {![eof $gdtf]} return
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close $gdtf
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set treediffs($ids) $treediff
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unset treepending
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if {[info exists diffids]} {
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if {$ids != $diffids} {
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gettreediffs $diffids
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if {$ids != $diffids} {
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gettreediffs $diffids
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} else {
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if {[info exists diffmergeid]} {
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contmergediff $ids
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} else {
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addtocflist $ids
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}
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@ -1770,31 +1856,36 @@ proc gettreediffline {gdtf ids} {
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return
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}
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set file [lindex $line 5]
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lappend treediffs($ids) $file
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lappend treediff $file
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}
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proc getblobdiffs {ids} {
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global diffopts blobdifffd diffids env
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global nextupdate diffinhdr
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global diffopts blobdifffd diffids env curdifftag curtagstart
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global diffindex difffilestart nextupdate diffinhdr
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set id [lindex $ids 0]
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set p [lindex $ids 1]
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set env(GIT_DIFF_OPTS) $diffopts
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if [catch {set bdf [open "|git-diff-tree -r -p $p $id" r]} err] {
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set cmd [list | git-diff-tree -r -p -C $p $id]
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if {[catch {set bdf [open $cmd r]} err]} {
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puts "error getting diffs: $err"
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return
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}
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set diffinhdr 0
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fconfigure $bdf -blocking 0
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set blobdifffd($ids) $bdf
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fileevent $bdf readable [list getblobdiffline $bdf $ids]
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set curdifftag Comments
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set curtagstart 0.0
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set diffindex 0
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catch {unset difffilestart}
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fileevent $bdf readable [list getblobdiffline $bdf $diffids]
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set nextupdate [expr {[clock clicks -milliseconds] + 100}]
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}
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proc getblobdiffline {bdf ids} {
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global diffids blobdifffd ctext curdifftag curtagstart
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global diffnexthead diffnextnote diffindex difffilestart
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global nextupdate diffpending diffpindex diffinhdr
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global nextupdate diffinhdr
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global gaudydiff
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set n [gets $bdf line]
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@ -1803,11 +1894,6 @@ proc getblobdiffline {bdf ids} {
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close $bdf
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if {$ids == $diffids && $bdf == $blobdifffd($ids)} {
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$ctext tag add $curdifftag $curtagstart end
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if {[incr diffpindex] < [llength $diffpending]} {
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set id [lindex $ids 0]
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set p [lindex $diffpending $diffpindex]
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contdiff [list $id $p]
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}
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}
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}
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return
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@ -2157,7 +2243,7 @@ proc diffvssel {dirn} {
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$ctext conf -state disabled
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$ctext tag delete Comments
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$ctext tag remove found 1.0 end
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startdiff [list $newid $oldid]
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startdiff $newid [list $oldid]
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}
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proc mkpatch {} {
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