$SIG{__WARN__} = sub { die @_; };
# xxx much of the comment below is TODO
-
+#
+# Usage:
+#
+# .../commitid.scad.pl [OPTION...] [STRING...] >commitid.scad.new \
+# && mv -f commitid.scad.new commitid.scad
+#
+# Options:
+#
+# --git generate git commit indications, as shown below
+# (this is the default if no strings are requested with -t)
+#
+# --git=object
+# generate git commit indication based on commit object only
+# (ie avoid counting commits)
+#
+# -i do not generate `+' if git-untracked files are present
+#
+# [-t[FORM]] TEXT
+# generate a form FORM containing TEXT
+# TEXT can contain newlines (final newline usually undesirable)
+# if FORM not specified, generates Arg0 Arg1 Arg2 in sequence
+# character set is SPC 0-9 a-f + * (`*' glyph is `=/=').
+#
# We generate a physical indication of which commit was used.
#
# We provide for scaling factors with dynamic variables:
# padded with zeroes; if too long we reduce mod 10^n
# eg
# Tiny4 1070
+# If tree is dirty, + or * is suffixed, reducing number of
+# digits by 1.
#
# Tiny4Q:
# Tiny6Q:
# Tiny4Q 10
# 70
#
-# Git4 Git4Q
-# Git6 Git6Q
-# Git8 Git8Q
+# Git4 Git4Q
+# Git6 Git6Q
+# Git8 Git8Q
# git-rev-parse HEAD (prefix of requested length)
# eg
# Git6 82f2a2
+# If tree is dirty, + or * is suffixed to commitid,
+# reducing number of hex digits by 1.
-# Small4
-# Small6
-# Small8
+# Full3
+# Full4
+# Full5
+# Full6
+# Full7
+# Full8
+# Full9
+# Full10
# git-rev-list --first-parent --count HEAD
# git-rev-parse HEAD
# eg
-# Small6 1070
+# Full6 1070
# 82f2a2
+# If tree is dirty, + or * is suffixed to count (but not to
+# commitid) reducing number of digits by 1.
+#
+# FontDemo
+#
+# Arg0, Arg1, ...
+# Strings passed on command line
sub p { print @_ or die $!; }
my ($form, @lines) = @_;
my $modb = "Commitid_$form";
p "module ${modb}_2D(){\n";
+ p " // |$_|\n" foreach @lines;
p " scale(Commitid__scale()){\n";
my $y = @lines;
my $cols = 1;
parsefont();
+our $do_git; # contains may chars 'c' (count) and/or 'o' (object)
+our $do_git_untracked = 1;
+our $argcounter;
+
+sub rjustt ($$) { # right justify and truncate (ie, pad and truncate at left)
+ my ($sz, $whole) = @_;
+ my $lw = length $whole;
+ return $lw > $sz
+ ? substr($whole, $lw-$sz)
+ : sprintf "%${sz}s", $whole;
+}
+
+sub ljustt ($$$) { # always includes $suffix
+ my ($sz, $whole, $suffix) = @_;
+ $sz -= length $suffix;
+ return sprintf "%-${sz}.${sz}s%s", $whole, $suffix;
+}
+
+sub gentextmodule_plusq ($$) {
+ my ($form, $s) = @_;
+ my $l = length $s;
+ gentextmodule($form, $s);
+ if (!($l & 1) && $l>=4) {
+ gentextmodule("${form}Q", substr($s,0,$l/2), substr($s,$l/2));
+ }
+}
+
+our @gcmd;
+
+sub gitrun_start () {
+ open F, "-|", @gcmd or die "$gcmd[0]: start: $!";
+}
+
+sub gitrun_done (;$) {
+ my ($errok) = @_;
+ $?=0; $!=0;
+ return if close F;
+ return if $errok;
+ die $! if $!;
+ die "@gcmd failed ($?)\n";
+}
+
+sub gitoutput (@) {
+ (@gcmd) = (qw(git), @_);
+ gitrun_start;
+ $_ = <F>;
+ gitrun_done;
+ defined or die "@gcmd produced no output";
+ chomp or die "@gcmd produced no final newline";
+ $_;
+}
+
+sub do_git () {
+ return unless $do_git;
+
+ @gcmd = qw(git status --porcelain);
+ push @gcmd, qw(--untracked=no) unless $do_git_untracked;
+
+ my $git_dirty = '';
+ gitrun_start;
+ while (<F>) {
+ if (m/^\?\?/ && $do_git_untracked) {
+ $git_dirty = '+';
+ next;
+ }
+ $git_dirty = '*';
+ last;
+ }
+ gitrun_done($git_dirty eq '*');
+
+ my $git_count;
+ my $git_object;
+
+ if ($do_git =~ m/c/) {
+ $git_count = gitoutput qw(rev-list --first-parent --count HEAD);
+ }
+ if ($do_git =~ m/o/) {
+ $git_object = gitoutput qw(rev-parse HEAD);
+ }
+
+ foreach my $sz (3..8) {
+ gentextmodule_plusq("Tiny$sz", rjustt($sz, $git_count.$git_dirty))
+ if defined $git_count;
+
+ gentextmodule_plusq("Git$sz", ljustt($sz, $git_object, $git_dirty))
+ if defined $git_object;
+
+ gentextmodule("Full$sz",
+ rjustt($sz, $git_count.$git_dirty),
+ ljustt($sz, $git_object, ''))
+ if defined $git_count && defined $git_object;
+ }
+}
+
+while (@ARGV) {
+ $_ = shift;
+ if (m/^--(no)?-git$/) {
+ $do_git = $1 ? '' : 'co';
+ } elsif (m/^---git=object$/) {
+ $do_git = 'o';
+ } elsif (m/^-i$/) {
+ $do_git_untracked = 0;
+ } elsif (m/^-t(.*)$/) {
+ my $form = $1;
+ die "bad usage: -t needs string argument\n";
+ $_ = shift;
+ gentextmodule($form, split /\n/, $_);
+ $argcounter //= 0;
+ } elsif (m/^[^-]/) {
+ gentextmodule("Arg$argcounter", $_);
+ $argcounter++;
+ } else {
+ die "bad usage: unknown option \`$_'\n";
+ }
+}
+
+$do_git //= defined($argcounter) ? '' : 'co';
+
gentextmodule('FontDemo', @demo);
+do_git();
+
+flush STDOUT or die $!;
+close STDOUT or die $!;
+
__DATA__
# 00 20 22 02
# # # # # # # #/ #
\## ##/ \## \## \#/ #
++ *
+
+ r
+ # ###
+### #
+ # ###
+ L