4 $SIG{__WARN__} = sub { die @_; };
6 # xxx much of the comment below is TODO
10 # .../commitid.scad.pl [OPTION...] [STRING...] >commitid.scad.new \
11 # && mv -f commitid.scad.new commitid.scad
15 # --git generate git commit indications, as shown below
16 # (this is the default if no strings are requested with -t)
19 # generate git commit indication based on commit object only
20 # (ie avoid counting commits)
22 # -i do not generate `+' if git-untracked files are present
25 # generate a form FORM containing TEXT
26 # TEXT can contain newlines (final newline usually undesirable)
27 # if FORM not specified, generates Arg0 Arg1 Arg2 in sequence
28 # character set is SPC 0-9 a-f + *
30 # We generate a physical indication of which commit was used.
32 # We provide for scaling factors with dynamic variables:
33 # $Commitid_pixelsz if not set, we use 0.8 } multiplied
34 # $Commitid_scale if not set, we use 1.0 } together
35 # $Commitid_depth if not set, we use xy pixel size from above / 2
36 # $Commitid_depth_scale if not set, we use 1.0 (multiplies depth above)
37 # $Commitid_max_best_scale if not set, we use 2.0 (max mult of xy in Best)
39 # For each form we have
41 # module Commitid_Form_2D() { ... }
42 # module Commitid_Form() { ... }
43 # function Commitid_Form_sz() => [ x, y ]
45 # These have their origin in the bottom left corner. The 3D model
46 # is a positive, has its origin halfway through, and is twice the
47 # depth in height, so it can be added or subtracted.
51 # function Commitid_pixelsz() // $Commitid_pixelsz * $Commitid_scale
52 # function Commitid_depth() // see above
54 # We can generate these forms:
57 # if tree is dirty, * is suffixed or prefixed to count or commitid
58 # if tree has untracked files, + is added
59 # (where it is added depends on the Form; in any case it does not
60 # change the size, but steals space from digits)
62 # Small2 Small3 ... Small10:
63 # git rev-list --first-parent --count HEAD
64 # typically 3-4 characters but we allow for up to 6
65 # padded with zeroes; if too long we reduce mod 10^n
66 # eg if the count is 123456
68 # Small8 _*123456 (where _ are spaces)
69 # the git objectid is included if it will fit
70 # unambiguously and usefully eg
73 # Small2S Small4S ... Small10S:
75 # same but split into two lines (S) or three lines (T) eg
76 # Small4S 45 Small6T _3
80 # Git2 Git3 ... Git10:
81 # Git4S Git6S ... Git10S:
83 # git-rev-parse HEAD (prefix of requested length)
84 # eg if the commitid is abcdef0123...
87 # Full4 Full6 ... Full20:
88 # git-rev-list --first-parent --count HEAD
92 # Full6 abcdef Full8 abcdef01
95 # Full6T Full9T ... Full30T
96 # as Full but commit is split over two lines
97 # for a 3-line message; eg
105 # Strings passed on command line
107 sub p { print @_ or die $!; }
110 // *** AUTOGENERATED - DO NOT EDIT *** //
111 function Commitid_pixelsz() =
112 ($Commitid_pixelsz ? $Commitid_pixelsz : 0.8) *
113 ($Commitid_scale ? $Commitid_scale : 1.0);
114 function Commitid_depth() =
115 ($Commitid_depth ? $Commitid_depth : Commitid_pixelsz()/2) *
116 ($Commitid_depth_scale ? $Commitid_depth_scale : 1.0);
117 function Commitid__scale() =
118 Commitid_pixelsz() / 0.2;
123 my $chrx = sprintf '%#x', ord $chr;
124 return "Commitid__chr_$chrx";
127 our $gtm_demo_i = -1;
131 sub gentextmodule_demo_start_batch () {
136 sub gen3dmodule ($@) {
137 my ($modb,@argl) = (@_);
138 p "module ${modb}(".(join ', ', @argl)."){\n";
139 p " d=Commitid_depth();\n";
140 p " translate([0,0,-d]) linear_extrude(height=d*2)\n";
141 p " ${modb}_2D(".(join ',', map { m/=/ ? $` : $_ } @argl).");\n";
145 sub gentextmodule ($@) {
146 my ($form, @lines) = @_;
147 my $modb = "Commitid_$form";
148 p "module ${modb}_2D(){\n";
149 p " // |$_|\n" foreach @lines;
150 p " scale(Commitid__scale()){\n";
153 foreach my $line (@lines) {
156 foreach my $chr (split //, $line) {
157 p sprintf " translate([%d * 0.8, %d * 1.2]) %s();\n",
158 $x, $y, chrmodname $chr
162 $cols = $x if $x > $cols;
168 p sprintf "function %s_sz() = Commitid__scale() * 0.1 * [ %d, %d ];\n",
169 $modb, 2 * ($cols * 4 - 1), 2 * (@lines * 6 - 1);
171 push @gtm_demo_o, <<END;
172 translate([$gtm_demo_i * st[0], $gtm_demo_j * st[1]]) {
174 color("blue") translate([-e,-e]) square(${modb}_sz() + 2*[e,e]);
175 square(${modb}_sz());
189 last if %cellmap && !m/\S/;
199 my @chrs = split / /, $_;
200 <DATA> !~ m/\S/ or die;
201 foreach my $row (reverse 0..4) {
212 foreach my $chr (@chrs) {
213 s{^ }{} or die "$chr $_ ?";
214 foreach my $col (0..2) {
218 my $f = $cellmap{$&};
220 $f =~ s/\b\d/ sprintf '%05d', $col*2000 + $&*1025 /ge;
221 $f =~ s/\d\b/ sprintf '%05d', $row*2000 + $&*1025 /ge;
222 push @{ $chrpolys{$chr} }, [ split / /, $f ];
234 foreach my $chr (sort keys %chrpolys) {
235 my $mod = chrmodname $chr;
236 p "module $mod () {\n";
237 foreach my $poly (@{ $chrpolys{$chr} }) {
240 foreach my $pt (@$poly) {
242 $pt =~ s{\d{5}}{$&,};
243 $pt =~ s{\b\d}{$&.}g;
252 @demo = reverse $demo =~ m{.{1,$democols}}go;
257 our $do_git; # contains may chars 'c' (count) and/or 'o' (object)
258 our $do_git_untracked = 1;
263 sub rjustt ($$;$) { # right justify and truncate (ie, pad and truncate at left)
264 # always includes prefix
265 my ($sz, $whole, $prefix) = @_;
267 my $lw = length $whole;
268 my $spare = $sz - $lw - (length $prefix);
270 ($spare > 0 ? (' ' x $spare) : '').
272 substr($whole, ($spare < 0 ? -$spare : 0));
276 my ($sz, $whole, $suffix) = @_;
278 $sz -= length $suffix;
279 return sprintf "%-${sz}.${sz}s%s", $whole, $suffix;
283 my ($form, @lines) = @_;
284 gentextmodule($form, @lines);
287 Chars => (length join '', @lines),
288 Lines => (scalar @lines),
289 Ambiguous => ($form =~ m/Full/ && !grep { m/\W/ } @lines),
294 sub genform_q ($$$) {
295 my ($form, $s, $lines) = @_;
298 return if $l % $lines;
302 genform($form, $s =~ m/.{$e}/g);
305 sub genform_plusq ($$) {
308 genform_q("${form}S", $s, 2);
309 genform_q("${form}T", $s, 3);
314 sub gitrun_start () {
315 open F, "-|", @gcmd or die "$gcmd[0]: start: $!";
318 sub gitrun_done (;$) {
324 die "@gcmd failed ($?)\n";
328 (@gcmd) = (qw(git), @_);
332 defined or die "@gcmd produced no output";
333 chomp or die "@gcmd produced no final newline";
338 return unless $do_git;
340 @gcmd = qw(git status --porcelain);
341 push @gcmd, qw(--untracked=no) unless $do_git_untracked;
346 if (m/^\?\?/ && $do_git_untracked) {
353 gitrun_done($git_dirty eq '*');
358 if ($do_git =~ m/c/) {
359 $git_count = gitoutput qw(rev-list --first-parent --count HEAD);
361 if ($do_git =~ m/o/) {
362 $git_object = gitoutput qw(rev-parse HEAD);
365 foreach my $sz (2..10) {
366 gentextmodule_demo_start_batch();
368 if (defined($git_count)) {
369 my $smallstr = rjustt($sz, $git_count, $git_dirty);
370 if (defined($git_object) && $sz >= length($git_count) + 3) {
371 $smallstr = $git_object;
372 $smallstr .= ($git_dirty || ' ');
373 $smallstr .= $git_count;
374 $smallstr = rjustt($sz, $smallstr);
376 genform_plusq("Small$sz", $smallstr);
379 genform_plusq("Git$sz", ljustt($sz, $git_object, $git_dirty))
380 if defined $git_object;
382 if (defined $git_count && defined $git_object) {
383 genform("Full".($sz*2),
384 ljustt($sz, $git_object),
385 rjustt($sz, $git_count, $git_dirty));
388 genform("Full".($e*3)."T",
389 ljustt($e*2, $git_object, $git_dirty)
391 rjustt($e, $git_count));
396 sub do_some_best ($$) {
397 my ($modname, $formre) = @_;
398 my $fullmodname = "Commitid_${modname}_2D";
399 my @argl = qw(max_sz margin=Commitid_pixelsz());
400 p "module $fullmodname(".(join ', ', @argl).") {\n";
401 my $mbs = '$Commitid_max_best_scale';
402 p " sc_max = $mbs ? $mbs : 2;\n";
403 p " sz = max_sz - 2*[margin,margin];\n";
407 $b->{Chars} <=> $a->{Chars} or
408 $a->{Lines} <=> $b->{Chars}
411 $_->{Form} =~ m/$formre/ &&
416 my $form = $f->{Form};
417 p " sz_$form = Commitid_${form}_sz();\n";
418 foreach my $rot (qw(0 1)) {
419 my $id = "${form}_r${rot}";
420 p " sc_$id = min(sc_max";
421 foreach my $xy (qw(0 1)) {
422 p ",sz[$xy]/sz_$form","[",(($xy xor $rot)+0),"]";
425 push @do, " if (sc_$id >= 1.0";
426 push @do, " && sc_$id >= sc_${form}_r1" if !$rot;
428 push @do, " translate([margin,margin]) scale(sc_$id)\n";
429 push @do, " rotate(90) translate([0,-sz_$form"."[1]])\n" if $rot;
430 push @do, " Commitid_${form}_2D();\n";
436 echo("$fullmodname could not fit anything in", max_sz);
442 gen3dmodule "Commitid_$modname", @argl;
446 return unless $do_git;
448 # Auto-computer for `best fit'
450 # We have two best fit approaches: with count, and git-object-id-only
452 # For `with count', we only ever include the git object id if the
453 # result would be unambigous. That means that at least one space
454 # or punctuation was generated.
456 # We sort the options by firstly number of characters
457 # (decreasing), and then by number of lines (increasing) and
458 # try each one both ways round.
460 do_some_best('BestCount', 'Small|Full') if $do_git =~ m/c/;
461 do_some_best('BestObjid', 'Git|Full') if $do_git =~ m/o/;
466 if (m/^--(no)?-git$/) {
467 $do_git = $1 ? '' : 'co';
468 } elsif (m/^---git=object$/) {
471 $do_git_untracked = 0;
472 } elsif (m/^-t(.*)$/) {
474 die "bad usage: -t needs string argument\n";
476 gentextmodule($form, split /\n/, $_);
479 gentextmodule("Arg$argcounter", $_);
482 die "bad usage: unknown option \`$_'\n";
486 $do_git //= defined($argcounter) ? '' : 'co';
488 gentextmodule_demo_start_batch();
489 gentextmodule('FontDemo', @demo);
494 p "module Commitid_2DDemo(){\n";
495 p " st = Commitid__scale() * [ 10, 5 ];\n";
496 p " e = Commitid_pixelsz();\n";
497 p $_ foreach @gtm_demo_o;
500 flush STDOUT or die $!;
501 close STDOUT or die $!;
515 /#\ r /#\ ##\ # # ### // ### /#\ /#\
516 # # /# # # # # # # # # # # #
517 # # # /#/ ##< \## ##\ ##\ // >#< \##
518 # # # # # # # # # # # # #
519 \#/ /#\ ### ##/ # ##/ \#/ # \#/ ##/
525 /## ##\ # /## #r# ###
527 \## ##/ \## \## \#/ #