+# Convert git "approxidate" ranges to something usable with our
+# Xapian indices. At the moment, Xapian only offers a C++-only API
+# and neither the SWIG nor XS bindings allow us to use custom code
+# to parse dates (and libgit2 doesn't expose git__date_parse, either,
+# so we're running git-rev-parse(1)).
+# This replaces things we need to send to $git->date_parse with
+# "\0".$strftime_format.['+'|$idx]."\0" placeholders
+sub date_parse_prepare {
+ my ($to_parse, $pfx, $range) = @_;
+ # are we inside a parenthesized statement?
+ my $end = $range =~ s/([\)\s]*)\z// ? $1 : '';
+ my @r = split(/\.\./, $range, 2);
+
+ # expand "d:20101002" => "d:20101002..20101003" and like
+ # n.b. git doesn't do YYYYMMDD w/o '-', it needs YYYY-MM-DD
+ # We upgrade "d:" to "dt:" to iff using approxidate
+ if ($pfx eq 'd') {
+ my $fmt = "\0%Y%m%d";
+ if (!defined($r[1])) {
+ if ($r[0] =~ /\A([0-9]{4})([0-9]{2})([0-9]{2})\z/) {
+ push @$to_parse, "$1-$2-$3";
+ # we could've handled as-is, but we need
+ # to parse anyways for "d+" below
+ } else {
+ push @$to_parse, $r[0];
+ if ($r[0] !~ /\A[0-9]{4}-[0-9]{2}-[0-9]{2}\z/) {
+ $pfx = 'dt';
+ $fmt = "\0%Y%m%d%H%M%S";
+ }
+ }
+ $r[0] = "$fmt+$#$to_parse\0";
+ $r[1] = "$fmt+\0";
+ } else {
+ for my $x (@r) {
+ next if $x eq '' || $x =~ /\A[0-9]{8}\z/;
+ push @$to_parse, $x;
+ if ($x !~ /\A[0-9]{4}-[0-9]{2}-[0-9]{2}\z/) {
+ $pfx = 'dt';
+ }
+ $x = "$fmt$#$to_parse\0";
+ }
+ if ($pfx eq 'dt') {
+ for (@r) {
+ s/\0%Y%m%d/\0%Y%m%d%H%M%S/;
+ s/\A([0-9]{8})\z/${1}000000/;
+ }
+ }
+ }
+ } elsif ($pfx eq 'dt') {
+ if (!defined($r[1])) { # git needs gaps and not /\d{14}/
+ if ($r[0] =~ /\A([0-9]{4})([0-9]{2})([0-9]{2})
+ ([0-9]{2})([0-9]{2})([0-9]{2})\z/x) {
+ push @$to_parse, "$1-$2-$3 $4:$5:$6";
+ } else {
+ push @$to_parse, $r[0];
+ }
+ $r[0] = "\0%Y%m%d%H%M%S$#$to_parse\0";
+ $r[1] = "\0%Y%m%d%H%M%S+\0";
+ } else {
+ for my $x (@r) {
+ next if $x eq '' || $x =~ /\A[0-9]{14}\z/;
+ push @$to_parse, $x;
+ $x = "\0%Y%m%d%H%M%S$#$to_parse\0";
+ }
+ }
+ } else { # "rt", let git interpret "YYYY", deal with Y10K later :P
+ for my $x (@r) {
+ next if $x eq '' || $x =~ /\A[0-9]{5,}\z/;
+ push @$to_parse, $x;
+ $x = "\0%s$#$to_parse\0";
+ }
+ $r[1] //= "\0%s+\0"; # add 1 day