#!/usr/bin/perl -w
-use strict;
-$SIG{__WARN__} = sub { die @_; };
+# commitid.scad.pl - a program for annotating solid models with commit info
+# Copyright (C)2016 Ian Jackson. See below. There is NO WARRANTY.
-# xxx much of the comment below is TODO
-#
-# Usage:
+
+# USAGE
+# =====
#
# .../commitid.scad.pl [OPTION...] [STRING...] >commitid.scad.new \
# && mv -f commitid.scad.new commitid.scad
#
+# Run without arguments, commitid.scad.pl will output an openscad file
+# which contains 2D and 3D models of the current git commit count and
+# commit object id (commit hash), useful for identifying printed
+# parts.
+#
+# See below for details. You probably want these two sections, as a
+# quick starting point:
+# General form of provided openscad modules
+# Autoscaling modules
+#
+# We can also generate models of short mainly-numeric strings
+# specified on the command line.
+#
+#
# Options:
#
-# --git generate git commit indications, as shown below
-# (this is the default if no strings are requested with -t)
+# --git Generate git commit indications, as shown below
+# (this is the default if no strings are requested with -t).
+# Ie, produce the `Autoscaling modules' and `Specific layouts'.
+#
+# --git=objid
+# Generate git commit indication based on commit object only
+# (ie avoid counting commits). Ie, do not generate `Small'
+# and `Full' layouts (and never select them for `Best').
+#
+# -i Do not generate `+' dirty indication if git-untracked files
+# are present (ie, missing .gitignore entries). The `*'
+# dirty tree indication (for modified files) cannot be disabled.
+#
+# [-t[LAYOUT]] TEXT
+# Generate a layout LAYOUT containing TEXT. TEXT can
+# contain newlines (a final newline usually undesirable, as
+# it will generate a blank line). If LAYOUT is not specified,
+# generates Arg0, Arg1, Arg2, etc., for successive such
+# TEXTs. The permissible character set in is TEXT is:
+# space 0-9 a-f + *
+#
+#
+# OPENSCAD INTERFACE
+# ==================
+#
+# Dynamic variables for configuration
+# -----------------------------------
+#
+# We honour the following variables to control various scaling factors:
+#
+# default value notes
+# $Commitid_pixelsz 0.8 \ multiplied together
+# $Commitid_scale 1.0 /
+# $Commitid_depth pixelsz/2 \ multiplied together
+# $Commitid_depth_scale 1.0 /
+# $Commitid_max_best_scale 2.0 limits XY scaling in *Best*
+#
+# FYI the font is nominally 3x5 pixels, with 1-pixel inter-line and
+# inter-character gaps. (It's not strictly speaking a 3x5 bitmap
+# font, size it contains partial pixels and diagonals.)
+#
+#
+# Non-`module'-specific functions
+# -------------------------------
+#
+# We provide the following functions (which depend on the config
+# variables, but not on anything else) and compute useful values:
+#
+# function Commitid_pixelsz() Actual size of each nominal pixel
+# function Commitid_depth() Depth to use (the amount characters
+# should be raised or sunken)
+#
+# General form of provided openscad modules
+# -----------------------------------------
#
-# --git=object
-# generate git commit indication based on commit object only
-# (ie avoid counting commits)
+# module Commitid_MODULE_2D(...) Collection of polygons forming characters
+# module Commitid_MODULE(...) The above, extruded up and down in Z
+# module Commitid_MODULE_M_2D(...) Mirror writing
+# module Commitid_MODULE_M(...) 3D mirror writing
+# function Commitid_MODULE_sz() A 2-vector giving the X,Y size
#
-# -i do not generate `+' if git-untracked files are present
+# Except for *Best* modules, the XY origin is in the bottom left
+# corner without any margin. Likewise Commitid_MODULE_sz does not
+# include any margin.
#
-# [-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 + *
+# For 3D versions, the model is 2*depth deep and the XY plane bisects
+# the model. This means it's convenient to either add or subtract from
+# a workpiece whose face is in the XY plane.
#
-# We generate a physical indication of which commit was used.
+# The _M versions are provided to avoid doing inconvenient translation
+# and rotation to get the flipped version in the right place.
#
-# We provide for scaling factors with dynamic variables:
-# $Commitid_pixelsz if not set, we use 0.8 } multiplied
-# $Commitid_scale if not set, we use 1.0 } together
-# $Commitid_depth if not set, we use xy pixel size from above / 2
-# $Commitid_depth_scale if not set, we use 1.0 (multiplies depth above)
#
-# For each form we have
+# Autoscaling modules
+# -------------------
#
-# module Commitid_Form_2D() { ... }
-# module Commitid_Form() { ... }
-# function Commitid_Form_sz() => [ x, y ]
+# These modules take a specification of the available XY space, and
+# select and generate a suitable specific identification layout:
+#
+# module Commitid_BestCount_2D (max_sz, margin=Commitid_pixelsz())
+# module Commitid_BestCount (max_sz, margin=Commitid_pixelsz())
+# module Commitid_BestCount_M_2D(max_sz, margin=Commitid_pixelsz())
+# module Commitid_BestCount_M (max_sz, margin=Commitid_pixelsz())
+# module Commitid_BestObjid_2D (max_sz, margin=Commitid_pixelsz())
+# module Commitid_BestObjid (max_sz, margin=Commitid_pixelsz())
+# module Commitid_BestObjid_M_2D(max_sz, margin=Commitid_pixelsz())
+# module Commitid_BestObjid_M (max_sz, margin=Commitid_pixelsz())
#
-# These have their origin in the bottom left corner. The 3D model
-# is a positive, has its origin halfway through, and is twice the
-# depth in height, so it can be added or subtracted.
+# max_sz should be [x,y].
#
-# And we provide
+# BestCount includes (as much as it can of) the git commit count,
+# ie the result of
+# git rev-list --first-parent --count HEAD
+# (and it may include some of the git revision ID too).
#
-# function Commitid_pixelsz() // $Commitid_pixelsz * $Commitid_scale
-# function Commitid_depth() // see above
+# BestObjid includes as much as it can of the git commit object hash,
+# and never includes any of the count.
#
-# We can generate these forms:
+# All of these will autoscale and autorotate the selected model, and
+# will include an internal margin of the specified size (by default,
+# one pixel around each edge). If no margin is needed, pass margin=0.
#
-# In each case:
-# if tree is dirty, * is suffixed or prefixed to count or commitid
-# if tree has untracked files, + is added
-# (where it is added depends on the Form; in any case it does not
-# change the size, but steals space from digits)
+# There are no `function Commitid_Best*_sz'. If they existed they
+# would simply return max_sz.
#
-# Small2 Small3 ... Small10:
-# git rev-list --first-parent --count HEAD
-# typically 3-4 characters but we allow for up to 6
-# padded with zeroes; if too long we reduce mod 10^n
-# eg if the count is 123456
+#
+# Output format
+# -------------
+#
+# In general the output, although it may be over multiple lines,
+# is always in this order
+# git commit object id (hash)
+# dirty indicator
+# git commit count
+#
+# Not all layouts have all these parts. The commit object id may
+# sometimes be split over multiple lines, but the count will not be.
+# If both commit id and commit count appear they will be separated
+# by (at least) a newline, or a dirty indicator, or a space.
+#
+# The commit id is truncated to fit, from the right.
+#
+# The commit count is truncated from the _left_, leaving the least
+# significant decimal digits.
+#
+# The dirty indicator can be
+#
+# * meaning the working tree contains differences from HEAD
+#
+# + meaning the working tree contains untracked files
+# (ie files you have failed to `git add' and also failed
+# to add to gitignore). (But see the -i option.)
+#
+#
+# Specific layouts
+# ----------------
+#
+# If you want to control the exact layout (and make space for it in
+# your design), you can use these:
+#
+# module Commitid_LAYOUT_2D()
+# module Commitid_LAYOUT()
+# module Commitid_LAYOUT_M_2D()
+# module Commitid_LAYOUT_M()
+# function Commitid_LAYOUT_sz()
+#
+# Here LAYOUT is one of the following (giving for example, `module
+# Commitid_Full8_2D'). In the examples, we will assume that the tree
+# is dirty, the commit count is 123456, and the commit object id
+# starts abcdeffedbcaabcdef... In the examples `_' shows where a
+# space would be printed.
+#
+# Small2 Small3 ... Small10
+# A single line containing as much of the count will fit, eg:
# Small5 3456*
-# Small8 __123456 (where _ are spaces)
-#
-# Small2S Small4S ... Small10S:
-# Small3T Small9T:
-# same but split into two lines (S) or three lines (T) eg
-# Small4S 45 Small6T _3
-# 6* 45
-# 6*
-#
-# Git2 Git3 ... Git10:
-# Git4S Git6S ... Git10S:
-# Git6T Git9T:
-# git-rev-parse HEAD (prefix of requested length)
-# eg if the commitid is abcdef0123...
+# Small8 _*123456
+# The objectid is included if more than one character of of it
+# will fit without makign the output ambiguous:
+# Small9 ab*123456
+#
+# Small2S Small4S ... Small10S
+# Small3T Small9T
+# Same as Small but split into two lines (S)
+# or three lines (T). Eg:
+# Small4S *4 Small6T _*
+# 56 34
+# 56
+# Git2 Git3 ... Git10
+# Git4S Git6S ... Git10S
+# Git6T Git9T
+# Just the commit object hash, in one, two (S) or three (T)
+# lines. E.g.:
# Git5 abcd*
-
+#
# Full4 Full6 ... Full20:
-# git-rev-list --first-parent --count HEAD
-# git-rev-parse HEAD
-# (all on two lines)
-# eg
-# Full6 abcdef Full8 abcdef01
-# 23456* _123456*
+# The commit object hash plus the commit count, on
+# separate lines, eg:
+# Full6 abcdef Full8 abcdeffe
+# *23456 _*123456
#
# Full6T Full9T ... Full30T
-# as Full but commit is split over two lines
-# for a 3-line message; eg
-# Full9T abc
-# de*
-# 456
+# As Full but the commit object id is split over two lines
+# producing a 3-line layout, eg:
+# Full9T abc Full21T abcdeff
+# de* edbcaa*
+# 456 _123456
+#
+# Other LAYOUTs
+# -------------
#
# FontDemo
#
-# Arg0, Arg1, ...
-# Strings passed on command line
+# A demonstration of the built-in 18-character font
+#
+# Arg0 Arg1, ...
+#
+# Strings passed on command line (without -t, or bare -t,
+# rather than with -tLAYOUT).
+#
+# LAYOUT
+#
+# Generated by passing -tLAYOUT on the command line.
+#
+
+
+# COPYRIGHT, LICENCE AND LACK-OF-WARRANTY INFORMATION
+# ===================================================
+#
+# This program is Free Software and a Free Cultural Work.
+#
+# You can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software
+# Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# Alternatively, at your option:
+#
+# This work is licensed under the Creative Commons
+# Attribution-ShareAlike 4.0 International License.
+#
+# There is NO WARRANTY.
+
+
+use strict;
+
+$SIG{__WARN__} = sub { die @_; };
sub p { print @_ or die $!; }
$gtm_demo_i++;
}
+sub argl_formal (@) { join ', ', @_; }
+sub argl_actual (@) { join ',', map { m/=/ ? $` : $_ } @_; }
+
+sub gen3dmodule ($@) {
+ my ($modb,$size,@argl) = (@_);
+ $size ||= "${modb}_sz()";
+ p "module ${modb}_M_2D(".argl_formal(@argl)."){\n";
+ p " translate([${size}[0],0])\n";
+ p " mirror([1,0,0])\n";
+ p " ${modb}_2D(".argl_actual(@argl).");\n";
+ p "};\n";
+ foreach my $mir ('','_M') {
+ my $mm = "${modb}${mir}";
+ p "module ${mm}(".argl_formal(@argl)."){\n";
+ p " d=Commitid_depth();\n";
+ p " translate([0,0,-d]) linear_extrude(height=d*2)\n";
+ p " ${mm}_2D(".argl_actual(@argl).");\n";
+ p "}\n";
+ }
+}
+
sub gentextmodule ($@) {
my ($form, @lines) = @_;
my $modb = "Commitid_$form";
}
p " }\n";
p "}\n";
- p "module ${modb}(){\n";
- p " d=Commitid_depth();\n";
- p " translate([0,0,-d]) linear_extrude(height=d*2) ${modb}_2D();\n";
- p "}\n";
+ gen3dmodule($modb,'');
p sprintf "function %s_sz() = Commitid__scale() * 0.1 * [ %d, %d ];\n",
$modb, 2 * ($cols * 4 - 1), 2 * (@lines * 6 - 1);
our $do_git_untracked = 1;
our $argcounter;
-sub rjustt ($$;$) { # right justify and truncate (ie, pad and truncate at left)
- # always includes prefix
- my ($sz, $whole, $prefix) = @_;
+our @forms;
+our %included; # 0 = not at all; 1 = truncated; 2 = full
+
+sub rjustt ($$$;$) {
+ # right justify and truncate (ie, pad and truncate at left)
+ # always includes prefix
+ # sets $included{$what}
+ my ($sz, $what, $whole, $prefix) = @_;
$prefix //= '';
my $lw = length $whole;
my $spare = $sz - $lw - (length $prefix);
+ $included{$what}= 1 + ($spare > 0);
return
($spare > 0 ? (' ' x $spare) : '').
$prefix.
substr($whole, ($spare < 0 ? -$spare : 0));
}
-sub ljustt ($$;$) {
- my ($sz, $whole, $suffix) = @_;
+sub ljustt ($$$;$) {
+ my ($sz, $what, $whole, $suffix) = @_;
$suffix //= '';
$sz -= length $suffix;
+ $included{$what} = 1 + ($sz >= length $whole);
return sprintf "%-${sz}.${sz}s%s", $whole, $suffix;
}
-sub gentextmodule_q ($$$) {
+sub genform_prep() {
+ $included{$_}=0 foreach qw(Objid Count);
+}
+
+sub genform ($@) {
+ my ($form, @lines) = @_;
+ gentextmodule($form, @lines);
+ my $f = {
+ Form => $form,
+ Chars => (length join '', @lines),
+ Lines => (scalar @lines),
+ Ambiguous => ($form =~ m/Full/ && !grep { m/\W/ } @lines),
+ Included => { %included },
+ };
+ push @forms, $f;
+}
+
+sub genform_q ($$$) {
my ($form, $s, $lines) = @_;
$gtm_demo_j++;
my $l = length $s;
my $e = $l/$lines;
return if $e < 2;
$gtm_demo_j--;
- gentextmodule($form, $s =~ m/.{$e}/g);
+ genform($form, $s =~ m/.{$e}/g);
}
-sub gentextmodule_plusq ($$) {
+sub genform_plusq ($$) {
my ($form, $s) = @_;
- gentextmodule($form, $s);
- gentextmodule_q("${form}S", $s, 2);
- gentextmodule_q("${form}T", $s, 3);
+ genform($form, $s);
+ genform_q("${form}S", $s, 2);
+ genform_q("${form}T", $s, 3);
}
our @gcmd;
if ($do_git =~ m/o/) {
$git_object = gitoutput qw(rev-parse HEAD);
}
+ print STDERR join ' ', map { $_ // '?' }
+ "-- commitid", $git_object, $git_dirty, $git_count, "--\n";
foreach my $sz (2..10) {
gentextmodule_demo_start_batch();
- gentextmodule_plusq("Small$sz", rjustt($sz, $git_count, $git_dirty))
- if defined $git_count;
+ if (defined($git_count)) {
+ genform_prep();
+ my $smallstr = rjustt($sz, 'Count', $git_count, $git_dirty);
+ my $forgitobj = $sz - length($git_count) - 1;
+ if (defined($git_object) && $forgitobj >= 2) {
+ $smallstr = ljustt($forgitobj, 'Objid', $git_object).
+ ($git_dirty || ' ').
+ $git_count;
+ }
+ genform_plusq("Small$sz", $smallstr);
+ }
- gentextmodule_plusq("Git$sz", ljustt($sz, $git_object, $git_dirty))
+ genform_prep();
+ genform_plusq("Git$sz", ljustt($sz, 'Objid', $git_object, $git_dirty))
if defined $git_object;
if (defined $git_count && defined $git_object) {
- gentextmodule("Full".($sz*2),
- ljustt($sz, $git_object),
- rjustt($sz, $git_count, $git_dirty));
+ genform_prep();
+ genform("Full".($sz*2),
+ ljustt($sz, 'Objid', $git_object),
+ rjustt($sz, 'Count', $git_count, $git_dirty));
+ genform_prep();
my $e = $sz;
- gentextmodule("Full".($e*3)."T",
- ljustt($e*2, $git_object, $git_dirty)
- =~ m/.{$e}/g,
- rjustt($e, $git_count));
+ genform("Full".($e*3)."T",
+ ljustt($e*2, 'Objid', $git_object, $git_dirty)
+ =~ m/.{$e}/g,
+ rjustt($e, 'Count', $git_count));
}
}
-}
+}
+
+sub do_some_best ($$) {
+ my ($bestwhat, $formre) = @_;
+ my $modname = "Best$bestwhat";
+ my $fullmodname = "Commitid_${modname}_2D";
+ my @argl = qw(max_sz margin=Commitid_pixelsz());
+ p "module $fullmodname(".argl_formal(@argl).") {\n";
+ my $mbs = '$Commitid_max_best_scale';
+ p " sc_max = $mbs ? $mbs : 2;\n";
+ p " sz = max_sz - 2*[margin,margin];\n";
+ my @do;
+ foreach my $f (
+ sort {
+ $b->{Included}{$bestwhat} <=> $a->{Included}{$bestwhat} or
+ $b->{Chars} <=> $a->{Chars} or
+ $a->{Lines} <=> $b->{Chars}
+ }
+ grep {
+ $_->{Form} =~ m/$formre/ &&
+ !$_->{Ambiguous}
+ }
+ @forms
+ ) {
+ my $form = $f->{Form};
+ p " sz_$form = Commitid_${form}_sz();\n";
+ foreach my $rot (qw(0 1)) {
+ my $id = "${form}_r${rot}";
+ p " sc_$id = min(sc_max";
+ foreach my $xy (qw(0 1)) {
+ p ",sz[$xy]/sz_$form","[",(($xy xor $rot)+0),"]";
+ }
+ p ");\n";
+ push @do, " if (sc_$id >= 1.0";
+ push @do, " && sc_$id >= sc_${form}_r1" if !$rot;
+ push @do, ") {\n";
+ push @do, " translate([margin,margin]) scale(sc_$id)\n";
+ push @do, " rotate(90) translate([0,-sz_$form"."[1]])\n" if $rot;
+ push @do, " Commitid_${form}_2D();\n";
+ push @do, " } else";
+ }
+ }
+ push @do, <<END;
+ {
+ echo("$fullmodname could not fit anything in", max_sz);
+ }
+END
+ p $_ foreach @do;
+ p "}\n";
+
+ gen3dmodule "Commitid_$modname", 'max_sz', @argl;
+}
+
+sub do_git_best () {
+ return unless $do_git;
+
+ # Auto-computer for `best fit'
+ #
+ # We have two best fit approaches: with count, and git-object-id-only
+ #
+ # For `with count', we only ever include the git object id if the
+ # result would be unambigous. That means that at least one space
+ # or punctuation was generated.
+ #
+ # We sort the options by firstly number of characters
+ # (decreasing), and then by number of lines (increasing) and
+ # try each one both ways round.
+
+ do_some_best('Count', 'Small|Full') if $do_git =~ m/c/;
+ do_some_best('Objid', 'Git|Full') if $do_git =~ m/o/;
+}
while (@ARGV) {
$_ = shift;
if (m/^--(no)?-git$/) {
$do_git = $1 ? '' : 'co';
- } elsif (m/^---git=object$/) {
+ } elsif (m/^---git=objid$/i) {
$do_git = 'o';
} elsif (m/^-i$/) {
$do_git_untracked = 0;
gentextmodule('FontDemo', @demo);
do_git();
+do_git_best();
p "module Commitid_2DDemo(){\n";
p " st = Commitid__scale() * [ 10, 5 ];\n";
0 1 2 3 4 5 6 7 8 9
-/#\ r /#\ ##\ # # ### // ### /#\ /#\
+/#\ r /#\ ##\ # # ### /#/ ### /#\ /#\
# # /# # # # # # # # # # # #
# # # /#/ ##< \## ##\ ##\ // >#< \##
# # # # # # # # # # # # #
~ianmdlvl / reprap-play.git / blobdiff