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authorKarl Berry <karl@freefriends.org>2009-04-10 23:37:36 +0000
committerKarl Berry <karl@freefriends.org>2009-04-10 23:37:36 +0000
commitc1d46af88c872513681359f3318adf75eff204e6 (patch)
tree202d1e8a757550ae18d69a6dafe5e79d9a3b072e /Master/texmf-dist/scripts/accfonts/vpl2vpl
parent62492735ac0c6382dbfb0dcfc2c5480eaa295b37 (diff)
accfonts scripts in scripts/ (report from Robin Fairbairns, 10 Apr 2009 10:16:31)
git-svn-id: svn://tug.org/texlive/trunk@12685 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/scripts/accfonts/vpl2vpl')
-rwxr-xr-xMaster/texmf-dist/scripts/accfonts/vpl2vpl994
1 files changed, 994 insertions, 0 deletions
diff --git a/Master/texmf-dist/scripts/accfonts/vpl2vpl b/Master/texmf-dist/scripts/accfonts/vpl2vpl
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+#!/usr/bin/perl
+
+# Vpl2vpl: a program to generate accented virtual fonts for TeX
+# Copyright (C) 1997 John D. Smith
+
+# This program is free software; 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 2 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, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+$version = 0.25;
+#------------------------------------------------------------------------#
+$description =
+"Syntax: vpl2vpl -d definition-file [-s shrink-factor]
+ [-c candrabindu-adjustment] [-b] vpl-file
+
+Vpl2vpl creates new TeX virtual fonts based on existing fonts or
+virtual fonts (\"input fonts\"). A successful run will read a pl
+(Property List) or vpl (Virtual Property List) file and a definition
+file, and will generate a new vpl (Virtual Property List) file on
+standard output. The input font is assumed to adhere to the standard
+TeX encoding for text fonts unless it was created with either of the
+programs afm2pl or afm2tfm, in which case it is assumed to conform to
+(respectively) the Adobe Standard Encoding or the encoding specified
+in the file dvips.enc. In either case, the name of the input font is
+assumed to be the name of the input file without its .vpl or .pl
+extension: it must conform to normal TeX conventions for naming fonts,
+as vpl2vpl attempts to draw conclusions from it about the kind of font
+it is dealing with.
+
+A typical complete sequence of commands to create a new virtual
+font might therefore be
+ tftopl cmr10.tfm cmr10.pl
+ vpl2vpl -d ISO-Latin1.def cmr10.pl >cmr10_isol1.vpl
+ vptovf cmr10_isol1.vpl cmr10_isol1.vf cmr10_isol1.tfm
+for a Computer Modern font, or
+ afm2pl Times-Roman.afm rptmr.pl
+ pltotf rptmr.pl rptmr.tfm
+ vpl2vpl -d ISO-Latin1.def rptmr.pl >ptmr-isol1.vpl
+ vptovf ptmr-isol1.vpl ptmr-isol1.vf ptmr-isol1.tfm
+for a PostScript font.
+
+Another approach for a PostScript font is to use afm2tfm:
+ afm2tfm Times-Roman.afm -t dvips.enc -v ptmr rptmr
+ vpl2vpl -d ISO-Latin1.def ptmr.vpl >ptmr-isol1.vpl
+ vptovf ptmr-isol1.vpl ptmr-isol1.vf ptmr-isol1.tfm
+-- but this is now deprecated, as afm2tfm generates incorrect
+values for the heights of some characters, and this can lead to
+bad accent placing.
+
+In order to keep the whole upper half of the character set free for
+the requirements of the encoding specified in the definition file,
+certain modifications are made to input fonts following the
+dvips.enc encoding to bring them into greater conformity with the
+TeX norm. In particular, the characters dotaccent and hungarumlaut
+are placed in the positions assigned by TeX (\"5F, \"7D), not those
+enforced by dvips.enc (\"C7, \"CD). The f-ligatures, double quotes
+and dashes are also moved from the upper half of the character set
+to their normal TeX positions. As a result, the following characters
+are not found in the lower half of the character set: quotesingle,
+quotedbl, backslash, underscore, braceleft, bar, braceright. These
+characters can, however, be assigned positions in the output font if
+they are needed. (Indeed, they could all be explicitly restored to
+their dvips.enc positions if this were desired.)
+
+Options:
+
+ -d should refer to a font definition file. This file (which could
+ usefully be named, e.g., \"French.def\") should consist of
+ lines of character definitions, in the form
+ \"number\" \"character\"
+ or
+ \"number\" \"character\" \"accent\"
+ Here \"number\" represents the character's position in the new
+ encoding and may be expressed in decimal, octal or hex;
+ \"character\" names the character (e.g. \"comma\", \"eight\",
+ \"A\") or consists of the word \".notdef\" (indicating that
+ the specified number's \"slot\" in the new encoding is to be
+ empty); and \"accent\" optionally names an accent to be placed
+ on the character. In addition to the standard accents available
+ in PostScript fonts, \"underbar\" and \"underdot\" are also
+ available, as are \"under\" versions of all the normal
+ superscript accents (\"underdieresis\", \"underring\", etc.).
+ The Indian accent \"candrabindu\" may also be specified: it
+ is formed by overprinting a breve with a dotaccent. Finally,
+ \"overdot\" may be used as a synonym for \"dotaccent\".
+
+ If the character named in the \"accent\" position is not in fact
+ a valid accent character, the program interprets the definition
+ as a request for a digraph formed from the \"character\" and the
+ \"accent\". A digraph consisting of, say, \"k\" and \"h\" will be
+ indistinguishable from the letters \"k\" and \"h\" printed
+ consecutively, but the digraph \"kh\" can itself receive accents
+ like any other character: see next paragraph.
+
+ A new character (such as \"amacron\" or \"kh\") may be freely
+ used in the \"character\" position of a further definition (such
+ as \"amacron breve\" or \"kh underbar\"). There is no constraint
+ on the ordering of definitions within a definition file. The
+ definition of \"a macron\" does not have to precede that of
+ \"amacron breve\": requests for \"impossible\" characters are
+ deferred until their constituents have had a chance to come into
+ being.
+
+ \"Slots\" for which no new definition is given retain the
+ definition they have in the input font.
+
+ The definition file may also contain blank lines and comments
+ (introduced by \"\#\").
+
+ -s may optionally give the factor, expressed as a per-thousand
+ value, by which normally superscript accents (such as dieresis,
+ ring) should be shrunk when they are used as subscript accents
+ (such as underdieresis, underring). Values of around 800 may be
+ found useful.
+
+ -c may optionally give two comma-separated numerical values to
+ adjust the x and y coordinates of the dotaccent placed within a
+ breve to form the candrabindu accent. A coordinate scheme using
+ \"DESIGNUNITS R 1000\" is assumed.
+
+ -b may optionally be specified to block the use of predefined
+ accented characters, forcing vpl2vpl to define its own
+ versions. This may be useful to secure a consistent appearance
+ in cases where a font designer does not share vpl2vpl's views
+ on where accents should be placed.
+
+ -h prints this help.
+";
+#------------------------------------------------------------------------#
+
+########################
+# Packages and constants
+########################
+#
+use File::Basename;
+use Getopt::Std;
+$cmdline = basename($0) . " " . join " ", @ARGV;
+getopts('d:s:c:bh');
+if ($opt_h or !$opt_d or $#ARGV != 0) {
+ print STDERR $description;
+ exit 1;
+}
+
+$filename = $ARGV[0];
+($fontname = $filename) =~ s/\..*$//;
+($encname = basename($opt_d)) =~ s/\..*$//;
+$vtitle = "(VTITLE Font $fontname modified for $encname encoding by vpl2vpl";
+$vtitle .= " v. $version" if $version;
+$vtitle .= ")\n(COMMENT Command line: $cmdline)";
+
+#
+# Flags for bold and small caps. These are probably a bit iffy, but
+# there's not much that can be done about it.
+#
+if ($fontname =~ /(^p.*b[oi]?[c]?$|^[^p].*bx[a-z]*[0-9]+$)/) { $bold = 1 }
+if ($fontname =~ /(^p.*c$|^[^p].*csc[a-z]*[0-9]+$)/) { $scaps = 1 }
+if ($opt_s) { $shrink = $opt_s / 1000 } else { $shrink = 1 }
+
+#
+# Array to convert from number to vpl representation
+#
+foreach $i (0 .. 255) {
+ $nv[$i] = (chr($i) =~ /[0-9A-Za-z]/ ? "C " . chr $i : sprintf("O %lo", $i));
+}
+
+#
+# Now the encoding vectors.
+#
+@TeXenc = (
+ "Gamma", "Delta", "Theta", "Lambda",
+ "Xi", "Pi", "Sigma", "Upsilon",
+ "Phi", "Psi", "Omega", "ff",
+ "fi", "fl", "ffi", "ffl",
+ "dotlessi", "dotlessj", "grave", "acute",
+ "caron", "breve", "macron", "ring",
+ "cedilla", "germandbls", "ae", "oe",
+ "oslash", "AE", "OE", "Oslash",
+ "space", "exclam", "quotedblright", "numbersign",
+ "dollar", "percent", "ampersand", "quoteright",
+ "parenleft", "parenright", "asterisk", "plus",
+ "comma", "hyphen", "period", "slash",
+ "zero", "one", "two", "three",
+ "four", "five", "six", "seven",
+ "eight", "nine", "colon", "semicolon",
+ "exclamdown", "equal", "questiondown", "question",
+ "at", "A", "B", "C",
+ "D", "E", "F", "G",
+ "H", "I", "J", "K",
+ "L", "M", "N", "O",
+ "P", "Q", "R", "S",
+ "T", "U", "V", "W",
+ "X", "Y", "Z", "bracketleft",
+ "quotedblleft", "bracketright", "circumflex", "dotaccent",
+ "quoteleft", "a", "b", "c",
+ "d", "e", "f", "g",
+ "h", "i", "j", "k",
+ "l", "m", "n", "o",
+ "p", "q", "r", "s",
+ "t", "u", "v", "w",
+ "x", "y", "z", "endash",
+ "emdash", "hungarumlaut", "tilde", "dieresis"
+);
+
+@dvipsenc = (
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", "quotesingle", "exclamdown", "questiondown",
+ "dotlessi", "dotlessj", "grave", "acute",
+ "caron", "breve", "macron", "ring",
+ "cedilla", "germandbls", "ae", "oe",
+ "oslash", "AE", "OE", "Oslash",
+ "space", "exclam", "quotedbl", "numbersign",
+ "dollar", "percent", "ampersand", "quoteright",
+ "parenleft", "parenright", "asterisk", "plus",
+ "comma", "hyphen", "period", "slash",
+ "zero", "one", "two", "three",
+ "four", "five", "six", "seven",
+ "eight", "nine", "colon", "semicolon",
+ "less", "equal", "greater", "question",
+ "at", "A", "B", "C",
+ "D", "E", "F", "G",
+ "H", "I", "J", "K",
+ "L", "M", "N", "O",
+ "P", "Q", "R", "S",
+ "T", "U", "V", "W",
+ "X", "Y", "Z", "bracketleft",
+ "backslash", "bracketright", "circumflex", "underscore",
+ "quoteleft", "a", "b", "c",
+ "d", "e", "f", "g",
+ "h", "i", "j", "k",
+ "l", "m", "n", "o",
+ "p", "q", "r", "s",
+ "t", "u", "v", "w",
+ "x", "y", "z", "braceleft",
+ "bar", "braceright", "tilde", "dieresis",
+ "asciicircum", "asciitilde", "Ccedilla", "Iacute",
+ "Icircumflex", "atilde", "edieresis", "egrave",
+ "scaron", "zcaron", "Eth", "ff",
+ "ffi", "ffl", ".notdef", ".notdef",
+ ".notdef", ".notdef", "Scaron", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ "Ydieresis", ".notdef", "Zcaron", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", "cent", "sterling",
+ "fraction", "yen", "florin", "section",
+ "currency", "copyright", "quotedblleft", "guillemotleft",
+ "guilsinglleft", "guilsinglright", "fi", "fl",
+ "degree", "endash", "dagger", "daggerdbl",
+ "periodcentered", ".notdef", "paragraph", "bullet",
+ "quotesinglbase", "quotedblbase", "quotedblright", "guillemotright",
+ "ellipsis", "perthousand", ".notdef", ".notdef",
+ "Agrave", "Aacute", "Acircumflex", "Atilde",
+ "Adieresis", "Aring", ".notdef", "dotaccent",
+ "Egrave", "Eacute", "Ecircumflex", "Edieresis",
+ "Igrave", "hungarumlaut", "ogonek", "Idieresis",
+ "emdash", "Ntilde", "Ograve", "Oacute",
+ "Ocircumflex", "Otilde", "Odieresis", ".notdef",
+ ".notdef", "Ugrave", "Uacute", "Ucircumflex",
+ "Udieresis", "Yacute", "Thorn", ".notdef",
+ "agrave", "aacute", "acircumflex", "ordfeminine",
+ "adieresis", "aring", ".notdef", "ccedilla",
+ "Lslash", "eacute", "ecircumflex", "ordmasculine",
+ "igrave", "iacute", "icircumflex", "idieresis",
+ ".notdef", "ntilde", "ograve", "oacute",
+ "ocircumflex", "otilde", "odieresis", ".notdef",
+ "lslash", "ugrave", "uacute", "ucircumflex",
+ "udieresis", "yacute", "thorn", "ydieresis"
+);
+
+@adobeenc=(
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ "space", "exclam", "quotedbl", "numbersign",
+ "dollar", "percent", "ampersand", "quoteright",
+ "parenleft", "parenright", "asterisk", "plus",
+ "comma", "hyphen", "period", "slash",
+ "zero", "one", "two", "three",
+ "four", "five", "six", "seven",
+ "eight", "nine", "colon", "semicolon",
+ "less", "equal", "greater", "question",
+ "at", "A", "B", "C",
+ "D", "E", "F", "G",
+ "H", "I", "J", "K",
+ "L", "M", "N", "O",
+ "P", "Q", "R", "S",
+ "T", "U", "V", "W",
+ "X", "Y", "Z", "bracketleft",
+ "backslash", "bracketright", "asciicircum", "underscore",
+ "quoteleft", "a", "b", "c",
+ "d", "e", "f", "g",
+ "h", "i", "j", "k",
+ "l", "m", "n", "o",
+ "p", "q", "r", "s",
+ "t", "u", "v", "w",
+ "x", "y", "z", "braceleft",
+ "bar", "braceright", "asciitilde", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", "exclamdown", "cent", "sterling",
+ "fraction", "yen", "florin", "section",
+ "currency", "quotesingle", "quotedblleft", "guillemotleft",
+ "guilsinglleft", "guilsinglright", "fi", "fl",
+ ".notdef", "endash", "dagger", "daggerdbl",
+ "periodcentered", ".notdef", "paragraph", "bullet",
+ "quotesinglbase", "quotedblbase", "quotedblright", "guillemotright",
+ "ellipsis", "perthousand", ".notdef", "questiondown",
+ ".notdef", "grave", "acute", "circumflex",
+ "tilde", "macron", "breve", "dotaccent",
+ "dieresis", ".notdef", "ring", "cedilla",
+ ".notdef", "hungarumlaut", "ogonek", "caron",
+ "emdash", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", "AE", ".notdef", "ordfeminine",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ "Lslash", "Oslash", "OE", "ordmasculine",
+ ".notdef", ".notdef", ".notdef", ".notdef",
+ ".notdef", "ae", ".notdef", ".notdef",
+ ".notdef", "dotlessi", ".notdef", ".notdef",
+ "lslash", "oslash", "oe", "germandbls",
+ ".notdef", ".notdef", ".notdef", ".notdef"
+);
+
+###############
+# Read DEF file
+###############
+#
+open DEF, $opt_d or die "Cannot open $opt_d: $!\n";
+while (<DEF>) {
+ next if (/^\s*$/ || /^\#/);
+ s/\s*(\#.*)?$//;
+ push @deflines, $_;
+}
+close DEF;
+
+###############
+# Read VPL file
+###############
+#
+# File header
+#
+$vplhead = <> or exit 1;
+unless ($vplhead =~ /^\((VTITLE|FAMILY) /) {
+ die "$filename is not a vpl file: giving up\n"
+}
+do {
+ $_ = <>;
+ $vplhead .= $_;
+} until ($_ =~ /^\(LIGTABLE$/ or eof);
+if (eof) {
+ die "$filename does not seem to be a text font (no LIGTABLE): giving up\n";
+}
+if ($vplhead =~ s/\A\(VTITLE(.*)$/$vtitle\n(COMMENT Old vtitle:$1/m) {
+ $vplhead =~ s/\n\(COMMENT Please edit that VTITLE .*\)$//m;
+ @enc = @dvipsenc;
+ $dvips = 1;
+}
+elsif ($vplhead =~ /\A\(FAMILY.*\)\n\(CODINGSCHEME ADOBESTANDARDENCODING\)$/m) {
+ $vplhead =~ s/\A/$vtitle\n/m;
+ @enc = @adobeenc;
+ $dvips = 0;
+}
+else {
+ $vplhead =~ s/\A/$vtitle\n/m;
+ @enc = @TeXenc;
+ $dvips = 0;
+}
+if ($vplhead =~ /^\(CODINGSCHEME TEX MATH SYMBOLS/m) {
+ die "$filename is a TeX math font: giving up\n";
+}
+unless ($vplhead =~ s/^(\(CODINGSCHEME .*\+\s?)(\S+)\)$/$1$encname)/m) {
+ $vplhead =~ s/^(\(CODINGSCHEME .*)\)$/$1 + $encname)/m;
+}
+if ($vplhead =~ /^\(DESIGNUNITS R (.+)\)/m) { $scale = $1 }
+else {$scale = 1 }
+if ($vplhead =~ /^ \(SLANT R (.+)\)/m) { $slant = $1 }
+if ($vplhead =~ /^ \(XHEIGHT [DR] (.+)\)/m) { $xheight = $1 }
+unless ($vplhead =~ /^\(MAPFONT /m) {
+ if ($vplhead =~ /^\(DESIGNSIZE R (.*)\)$/m) { $dsize = $1 }
+ $mapfont = "\n(MAPFONT D 0\n (FONTNAME $fontname)\n (FONTDSIZE R $dsize)\n )";
+ $vplhead =~ s/\n\(LIGTABLE\Z/$mapfont$&/m;
+}
+if ($opt_s) {
+ $vplhead =~ s[^(\(MAPFONT D )0(.*?)( \))]
+ [$&\n${1}1$2 (FONTAT R ${ \($shrink * $scale) })\n$3]ms;
+}
+
+#
+# Ligatures and kerns
+#
+do {
+ $_ = <>;
+ s/ \(comment .*$//i;
+ $ligs .= $_;
+} until $_ =~ /^ \)/;
+#
+# Now build a hash to convert from vpl representation to char name
+# and use it to make ligtable readable
+#
+foreach $i (0 .. 255) { $vc{$nv[$i]} = $enc[$i] }
+$ligs =~ s/^( \((?:LABEL|KRN) )(\S+ \S+)(.*\))$/$1$vc{$2}$3/gm;
+$ligs =~ s/^( \(LIG )(\S+ \S+) (\S+ \S+)\)$/$1$vc{$2} $vc{$3})/gm;
+
+#
+# Character definitions: store "encoded" defs in @chars, store *all*
+# defs in %allchars
+#
+$_ = <>;
+do {
+ if (/^\(CHARACTER/) {
+ $character = $_;
+ do {
+ $_ = <>;
+ $character .= $_;
+ } until $_ =~ /^ \)/;
+ storeinfo($character);
+ $_ = <>;
+ }
+} until eof;
+foreach $i (0 .. $#chars) {
+ if ($chars[$i] and $enc[$i] ne ".notdef") {
+ $allchars{$enc[$i]} = $chars[$i];
+ }
+}
+
+##################
+# Set up constants
+##################
+
+$subacc = "(cedilla|ogonek|commaaccent)";
+$supacc = "(grave|acute|circumflex|tilde|macron|breve|dotaccent|overdot|dieresis|ring|hungarumlaut|caron|candrabindu)";
+$underacc = "(underdot|under$supacc)";
+$accents = "($subacc|$supacc|$underacc|underbar)";
+$underadp = 0.230; # depth of "under" accs
+$underddp = 0.213; # depth of underdot
+if ($bold) { $thk = 0.072 } else { $thk = 0.052 } # thickness and
+$underbdp = 0.082 + $thk; # depth of underbar
+$capheight = $allchars{"X"}{ht};
+$accheight = $allchars{"macron"}{ht};
+$accdepth = $accheight - $thk * $scale; # probable approx. "depth" of macron
+$v1 = $accheight - $xheight; # vertical offset for double accents
+$v2 = $capheight - $xheight; # vertical offset for accented caps etc
+if ($scaps) { # accented small caps
+ $scoffset = $allchars{"x"}{ht} - $xheight;
+ $v1 += $scoffset;
+}
+if ($opt_c) { # candrabindu
+ ($cbx, $cby) = $opt_c =~ /^(.*),(.*)$/;
+ $cbx += ($allchars{"breve"}{wd} - $allchars{"dotaccent"}{wd}) / 2;
+ $cbx /= 1000;
+ $cby /= 1000;
+}
+
+######################
+# Build the characters
+######################
+#
+# First normalise dvips.enc encoding quirks
+#
+if ($dvips) {
+ chmove("fi", 014);
+ chmove("fl", 015);
+ chmove("quotedblright", 042);
+ chmove("quotedblleft", 0134);
+ chmove("dotaccent", 0137);
+ chmove("endash", 0173);
+ chmove("emdash", 0174);
+ chmove("hungarumlaut", 0175);
+}
+#
+# Now build a list of definitions supplied by user
+#
+for (@deflines) {
+ if (/^\s*(\d+|0[0-7]+|0x[0-9a-fA-F]+)\s+([a-zA-Z]+?|\.notdef)(?:\s+([a-zA-Z]+))?$/) {
+ ($num, $char, $acc) = ($1, $2, $3);
+ $num = oct $num if $num =~ /^0/;
+ if ($num > 255) { die "Bad definition (number out of range): $_\n" }
+ $def = {};
+ $def->{qdef} = $_;
+ $def->{num} = $num;
+ $def->{char} = $char;
+ $def->{acc} = $acc;
+ $def->{nchar} = $char . $acc;
+ push @nchars, $def->{nchar};
+ push @defs, $def;
+ }
+ else { die "Bad definition: $_\n" }
+}
+#
+# Work through the list
+#
+while (@defs) {
+ $def = shift @defs;
+ $qdef = $def->{qdef};
+ $num = $def->{num};
+ $char = $def->{char};
+ $acc = $def->{acc};
+ $nchar = $def->{nchar};
+ #
+ # If we can't handle $char/$acc yet, but believe we will be able
+ # to later, send the definition to the back of the queue. In case
+ # it later turns out we were wrong, allow only five loops before
+ # giving up.
+ #
+ if (!$allchars{$char} and $char ne ".notdef") {
+ if (grep /^$char$/, @nchars) {
+ unless (++$def->{requeue} > 5) {
+ push @defs, $def;
+ next;
+ }
+ }
+ else { die "Bad definition (no such character): $qdef\n" }
+ }
+ if ($acc and !$allchars{$acc} and $acc !~ /^$accents$/) {
+ if (grep /^$acc$/, @nchars) {
+ unless (++$def->{requeue} > 5) {
+ push @defs, $def;
+ next;
+ }
+ }
+ else { die "Bad definition (no such accent): $qdef\n" }
+ }
+ #
+ # Remove any existing claims on $num
+ #
+ @{ $allchars{$chars[$num]{id}}{num} } = grep !/$num/,
+ @{ $allchars{$chars[$num]{id}}{num} };
+ #
+ # First deal with .notdef
+ #
+ if ($nchar eq ".notdef") {
+ undef $chars[$num];
+ }
+ #
+ # Next look among existing chars (unless blocked by -b)
+ #
+ elsif (!($acc and $opt_b) and $allchars{$nchar}) {
+ push( @{ $allchars{$nchar}{num} }, $num);
+ $chars[$num] = $allchars{$nchar};
+ }
+ #
+ # If it can't be built from sub-elements, issue a warning and move on
+ #
+ elsif (!$acc) {
+ warn "No such character - ignoring definition: $qdef\n";
+ undef $chars[$num];
+ }
+ #
+ # Now build the char
+ #
+ else {
+ #
+ # First get rid of predefined/duplicated ligtable statements
+ # and character definitions; also synonyms
+ #
+ $ligs =~ s/\n \((LABEL|KRN|LIG) ($nchar .*|.*$nchar)\)$//gm;
+ $allchars{$nchar} = ();
+ if ($acc eq "overdot") {
+ $nchar2 = $char . "dotaccent";
+ $ligs =~ s/\n \((LABEL|KRN|LIG) ($nchar2 .*|.*$nchar2)\)$//gm;
+ delete $allchars{$nchar2};
+ }
+ #
+ # Go!
+ #
+ if ($acc =~ /^$subacc$/) {
+ subacc($num, $char, $acc, $nchar);
+ fixkerns($char, $acc);
+ }
+ elsif ($acc =~ /^$supacc$/) {
+ supacc($num, $char, $acc, $nchar);
+ fixkerns($char, $acc);
+ }
+ elsif ($acc =~ /^$underacc$/) {
+ underacc($num, $char, $acc, $nchar);
+ fixkerns($char, $acc);
+ }
+ elsif ($acc =~ /^underbar$/) {
+ underb($num, $char, $nchar);
+ fixkerns($char, $acc);
+ }
+ else {
+ digraph($num, $char, $acc, $nchar);
+ fixkerns($char, $acc);
+ }
+ }
+}
+
+###################
+# Sort out ligtable
+###################
+#
+# Convert to vpl representation, eliminating statements invoking
+# "unencoded" characters
+#
+@liglist = split /\n/, $ligs;
+$ligs = "";
+foreach (@liglist) {
+ if (/^( \(LIG \S+ )(\S+)\)$/) {
+ if ($n = ${ $allchars{$2}{num} }[0]) {
+ s/^( \(LIG \S+ )(\S+)\)$/$1$nv[$n])/;
+ }
+ else { next }
+ }
+ if (/^( \((?:LABEL|LIG|KRN) )([^ )]+)(.*)$/) {
+ ($one, $two, $three) = ($1, $2, $3);
+ foreach $n (@{ $allchars{$two}{num} }) {
+ $ligs .= "$one$nv[$n]$three\n";
+ }
+ }
+ else { $ligs .= "$_\n" }
+}
+#
+# Eliminate sequences orphaned by elimination of a LABEL
+#
+@liglist = split / \(STOP\)\n/, $ligs;
+$ligs = "";
+foreach (@liglist) {
+ if (/^ \(LABEL /m) { $ligs .= "$_ (STOP)\n" }
+ elsif (/^ \)$/m) { $ligs .= $_ }
+}
+#
+# Eliminate empty statements
+#
+$ligs =~ s/(^ \(LABEL .*\)\n)+ \(STOP\)\n//gm;
+
+####################
+# Output the results
+####################
+#
+print $vplhead, $ligs;
+foreach $i (0 .. 255) { if (defined $chars[$i]{id}) { printchar($i) } }
+
+#####################
+# End of main program
+#####################
+
+sub storeinfo {
+ #
+ # Extract info from a character definition and store it in @chars
+ #
+ my $char = shift;
+ my $num;
+ if ($char =~ /\A\(CHARACTER O ([0-7]+)/m) { $num = oct $1 }
+ elsif ($char =~ /\A\(CHARACTER C (.)/m) { $num = ord $1 }
+ $chars[$num]{id} = $enc[$num];
+ push( @{ $chars[$num]{num} }, $num);
+ if ($char =~ /^ \(CHARWD R (.*?)\)$/m) { $chars[$num]{wd} = $1 }
+ if ($char =~ /^ \(CHARHT R (.*?)\)$/m) { $chars[$num]{ht} = $1 }
+ if ($char =~ /^ \(CHARDP R (.*?)\)$/m) { $chars[$num]{dp} = $1 }
+ if ($char =~ /^ \(CHARIC R (.*?)\)$/m) { $chars[$num]{ic} = $1 }
+ if ($char =~ /^ \(MAP\n((.|\n)*)^ \)/m) { $chars[$num]{map} = $1 }
+ else { $chars[$num]{map} = " (SETCHAR $nv[$num])\n" }
+}
+
+sub printchar {
+ #
+ # Extract info from @chars and build it into a character definition
+ #
+ my $num = shift;
+ print "(CHARACTER ";
+ if (chr($num) =~ /[0-9A-Za-z]/) { print "C " . chr($num) }
+ else {
+ printf "O %lo", $num;
+ print " (COMMENT " . $chars[$num]{id} . ")";
+ }
+ print "\n";
+ print " (CHARWD R " . $chars[$num]{wd} . ")\n" if $chars[$num]{wd};
+ print " (CHARHT R " . $chars[$num]{ht} . ")\n" if $chars[$num]{ht};
+ print " (CHARDP R " . $chars[$num]{dp} . ")\n" if $chars[$num]{dp};
+ print " (CHARIC R " . $chars[$num]{ic} . ")\n" if $chars[$num]{ic};
+ print " (MAP\n";
+ print $chars[$num]{map};
+ print " )\n";
+ print " )\n";
+}
+
+sub chmove {
+ #
+ # Move a character
+ #
+ my ($char, $num) = @_;
+ my $i;
+ foreach $i (@{ $allchars{$char}{num} }) { undef $chars[$i] }
+ @{ $allchars{$char}{num} } = ();
+ @{ $allchars{$chars[$num]{id}}{num} } = grep !/$num/,
+ @{ $allchars{$chars[$num]{id}}{num} };
+ push( @{ $allchars{$char}{num} }, $num);
+ $chars[$num] = $allchars{$char};
+}
+
+sub max {
+ #
+ # Return greater of two values
+ #
+ my ($a, $b) = @_;
+ return $a > $b ? $a : $b;
+}
+
+sub subacc {
+ #
+ # Subscript accents
+ #
+ my ($num, $char, $acc, $id) = @_;
+ my ($h, $s1, $s2, $s3);
+ $allchars{$id}{wd} = $allchars{$char}{wd};
+ $allchars{$id}{ht} = $allchars{$char}{ht};
+ $allchars{$id}{dp} = $allchars{$acc}{dp};
+ $allchars{$id}{ic} = $allchars{$char}{ic};
+ $allchars{$id}{id} = $id;
+ push( @{ $allchars{$id}{num} }, $num);
+ $s1 = $allchars{$char}{map};
+ $s1 =~ s/\A (.*)\n\Z/(PUSH) $1 (POP)/s;
+ $h = sprintf("%.3f", ($allchars{$char}{wd} - $allchars{$acc}{wd}) / 2);
+ if ($h > 0) { $s2 = " (MOVERIGHT R $h) " }
+ elsif ($h < 0) {
+ $h = -$h;
+ $s2 = " (MOVELEFT R $h) ";
+ }
+ else { $s2 = " " }
+ $s3 = $allchars{$acc}{map};
+ $s3 =~ s/\A.*(\(SETCHAR . .+?\)).*\Z/$1/s;
+ $allchars{$id}{map} = " $s1\n$s2$s3\n";
+ $chars[$num] = $allchars{$id};
+}
+
+sub supacc {
+ #
+ # Superscript accents
+ #
+ my ($num, $char, $acc, $id) = @_;
+ my ($cb, $h, $hadj, $tallchar, $ic, $s1, $s2, $s3);
+ if ($char eq "i" and $allchars{"dotlessi"}) { $char = "dotlessi" }
+ if ($char eq "j" and $allchars{"dotlessj"}) { $char = "dotlessj" }
+ if ($acc eq "overdot") { $acc = "dotaccent" }
+ if ($acc eq "candrabindu") {
+ $acc = "breve";
+ ($cb = $allchars{"dotaccent"}{map}) =~ s/\A.*(\(SETCHAR . .+?\)).*\Z/$1/s;
+ }
+ $allchars{$id}{wd} = $allchars{$char}{wd};
+ $allchars{$id}{ht} = $allchars{$acc}{ht};
+ $allchars{$id}{dp} = $allchars{$char}{dp};
+ $allchars{$id}{id} = $id;
+ push( @{ $allchars{$id}{num} }, $num);
+ $s1 = $allchars{$char}{map};
+ $s1 =~ s/\A (.*)\n\Z/(PUSH) $1 (POP)/s;
+ if ($scaps and $char =~ /^[a-z]/) { # accented small caps
+ $tallchar = 1;
+ if ($char =~ /$supacc$/
+ and $char !~ /under$supacc$/) { # double accs
+ $s2 = " (MOVEUP R $v1)";
+ $allchars{$id}{ht} += $v1;
+ $hadj = sprintf("%.3f", $v1 * $slant);
+ $ic = $allchars{$char}{ic};
+ }
+ else { # single accs
+ $s2 = " (MOVEUP R $scoffset)";
+ $allchars{$id}{ht} += $scoffset;
+ $hadj = sprintf("%.3f", $scoffset * $slant);
+ $ic = $allchars{$acc}{ic} + $hadj;
+ }
+ }
+ elsif ($allchars{$char}{ht} >= ($accheight + $v2)) { # double accs
+ $tallchar = 1; # on caps etc.
+ $s2 = " (MOVEUP R ${ \($v1 + $v2) })";
+ $allchars{$id}{ht} += ($v1 + $v2);
+ $hadj = sprintf("%.3f", ($v1 + $v2) * $slant);
+ $ic = $allchars{$char}{ic};
+ }
+ elsif ($allchars{$char}{ht} > 1.15 * $xheight) {
+ $tallchar = 1;
+ if ($char =~ /$supacc$/
+ and $char !~ /under$supacc$/) { # double accs
+ $s2 = " (MOVEUP R $v1)";
+ $allchars{$id}{ht} += $v1;
+ $hadj = sprintf("%.3f", $v1 * $slant);
+ $ic = $allchars{$char}{ic};
+ }
+ else { # caps etc.
+ $s2 = " (MOVEUP R $v2)";
+ $allchars{$id}{ht} += $v2;
+ $hadj = sprintf("%.3f", $v2 * $slant);
+ $ic = $allchars{$char}{ic};
+ }
+ }
+ else { # single accs
+ $s2 = " ";
+ $ic = $allchars{$acc}{ic};
+ }
+ $h = sprintf("%.3f", ($allchars{$char}{wd} - $allchars{$acc}{wd}) / 2);
+ unless ($tallchar) { $ic -= $h }
+ $allchars{$id}{ic} = $ic unless $ic < 0;
+ $h += $hadj;
+ if ($h > 0) { $s2 .= " (MOVERIGHT R $h) " }
+ elsif ($h < 0) {
+ $h = -$h;
+ $s2 .= " (MOVELEFT R $h) ";
+ }
+ else { $s2 .= " " }
+ $s3 = $allchars{$acc}{map};
+ $s3 =~ s/\A.*(\(SETCHAR . .+?\)).*\Z/$1/s;
+ if ($cb) { # candrabindu
+ $cb = $s2 . $cb;
+ if ($cbx) {
+ unless (($cb =~ s/(MOVERIGHT R )([0-9.]+)/$1 . ($2 + $cbx * $scale)/e)
+ or ($cb =~ s/(MOVELEFT R )([0-9.]+)/$1 . ($2 - $cbx * $scale)/e)) {
+ $cb =~ s/^( +)/"$1(MOVERIGHT R " . ($cbx * $scale) . ") "/e;
+ }
+ }
+ if ($cby) {
+ unless ($cb =~ s/(MOVEUP R )([0-9.]+)/$1 . ($2 + $cby * $scale)/e) {
+ $cb =~ s/^( +)/"$1(MOVEUP R " . ($cby * $scale) . ") "/e;
+ }
+ }
+ $cb .= "\n";
+ $s1 = "(PUSH) " . $s1;
+ $s3 .= " (POP)";
+ }
+ $allchars{$id}{map} = " $s1\n$s2$s3\n$cb";
+ $chars[$num] = $allchars{$id};
+}
+
+sub underacc {
+ #
+ # Dropped accents
+ #
+ my ($num, $char, $acc, $id) = @_;
+ my ($h, $v, $s1, $s2, $s3);
+ $acc =~ s/^under//;
+ if ($acc eq "dot") { $acc = "period" }
+ if ($acc eq "candrabindu") { die "Bad definition (no such accent): $qdef\n" }
+ $allchars{$id}{wd} = $allchars{$char}{wd};
+ $allchars{$id}{ht} = $allchars{$char}{ht};
+ $allchars{$id}{ic} = $allchars{$char}{ic};
+ $allchars{$id}{id} = $id;
+ push( @{ $allchars{$id}{num} }, $num);
+ if ($acc =~ /^$supacc$/) {
+ $v = $allchars{$id}{dp} = $underadp * $scale * $shrink;
+ $v += ($accdepth * $shrink);
+ }
+ else {
+ $v = $allchars{$id}{dp} = $underddp * $scale + $allchars{$acc}{dp};
+ }
+ $s1 = $allchars{$char}{map};
+ $s1 =~ s/\A (.*)\n\Z/(PUSH) $1 (POP)/s;
+ if ($acc =~ /^$supacc$/) {
+ $h = ($allchars{$char}{wd} - ($allchars{$acc}{wd} * $shrink)) / 2 - $v * $slant;
+ if ($opt_s) { $s2 = " (SELECTFONT D 1)\n" }
+ }
+ else {
+ $h = ($allchars{$char}{wd} - $allchars{$acc}{wd}) / 2 - $v * $slant;
+ }
+ $h = sprintf("%.3f", $h);
+ if ($h > 0) {
+ $s2 .= " (MOVEDOWN R $v) (MOVERIGHT R $h) ";
+ }
+ elsif ($h < 0) {
+ $h = -$h;
+ $s2 .= " (MOVEDOWN R $v) (MOVELEFT R $h) ";
+ }
+ else { $s2 = " (MOVEDOWN R $v) " }
+ $s3 = $allchars{$acc}{map};
+ $s3 =~ s/\A.*(\(SETCHAR . .+?\)).*\Z/$1/s;
+ if ($opt_s and $acc =~ /^$supacc$/) { $s3 .= "\n (SELECTFONT D 0)" }
+ $allchars{$id}{map} = " $s1\n$s2$s3\n";
+ $chars[$num] = $allchars{$id};
+}
+
+sub underb {
+ #
+ # Underbar
+ #
+ my ($num, $char, $id) = @_;
+ my ($h, $w, $dp, $s1, $s2, $s3);
+ $allchars{$id}{wd} = $allchars{$char}{wd};
+ $allchars{$id}{ht} = $allchars{$char}{ht};
+ $allchars{$id}{dp} = $dp = $underbdp * $scale;
+ $allchars{$id}{ic} = $allchars{$char}{ic};
+ $allchars{$id}{id} = $id;
+ push( @{ $allchars{$id}{num} }, $num);
+ $s1 = $allchars{$char}{map};
+ $s1 =~ s/\A (.*)\n\Z/(PUSH) $1 (POP)/s;
+ $h = sprintf("%.3f", ($allchars{$id}{wd} / 10 - $dp * $slant));
+ $w = sprintf("%.3f", ($allchars{$id}{wd} * 8 / 10));
+ if ($h > 0) {
+ $s2 = " (MOVEDOWN R $dp) (MOVERIGHT R $h) ";
+ }
+ elsif ($h < 0) {
+ $h = -$h;
+ $s2 = " (MOVEDOWN R $dp) (MOVELEFT R $h) ";
+ }
+ else { $s2 .= " (MOVEDOWN R $dp) " }
+ $s3 = "(SETRULE R ${ \($thk * $scale) } R $w)";
+ $allchars{$id}{map} = " $s1\n$s2$s3\n";
+ $chars[$num] = $allchars{$id};
+}
+
+sub digraph {
+ #
+ # Make a new character consisting of two existing characters
+ #
+ my ($num, $char, $acc, $id) = @_;
+ my ($one, $two, $kern, $s1, $s2);
+ if ($ligs =~ /^ \(LABEL $char\)\n(.*?)\n \(KRN $acc R (-?[0-9.]+)\)\n/ms) {
+ ($one, $two) = ($1, $2);
+ }
+ $kern = $two if $one !~ /^ \(STOP\)$/m;
+ $allchars{$id}{wd} = $allchars{$char}{wd} + $allchars{$acc}{wd};
+ $allchars{$id}{wd} += $kern;
+ $allchars{$id}{ht} = max($allchars{$char}{ht}, $allchars{$acc}{ht});
+ $allchars{$id}{dp} = max($allchars{$char}{dp}, $allchars{$acc}{dp});
+ $allchars{$id}{ic} = $allchars{$acc}{ic};
+ $allchars{$id}{id} = $id;
+ push( @{ $allchars{$id}{num} }, $num);
+ $s1 = $allchars{$char}{map};
+ chomp ($s2 = $allchars{$acc}{map});
+ $s1 =~ s/(\(SETCHAR .*?\))/$1\n$s2/;
+ if ($kern) {
+ if ($kern < 0) {
+ $kern = -$kern;
+ $s1 =~ s/(\(SETCHAR .*?\))/$1 (MOVELEFT R $kern)/;
+ }
+ else { $s1 =~ s/(\(SETCHAR .*?\))/$1 (MOVERIGHT R $kern)/ }
+ }
+ $allchars{$id}{map} = $s1;
+ $chars[$num] = $allchars{$id};
+}
+
+sub fixkerns {
+ #
+ # Generalise the kerning info contained in the vpl file by applying
+ # it to new accented chars. Do not kern lower-case chars bearing
+ # superscript accents with capitals, quotes or a preceding "f".
+ #
+ my ($char, $acc) = @_;
+ my ($olabel, $nlabel, @liglist, $lchar, $rchar);
+ if ($acc =~ /^$accents$/) { $lchar = $rchar = $char }
+ else {
+ $lchar = $char;
+ $rchar = $acc;
+ }
+ unless ($char =~ /^[a-z]/ and $acc =~ /^$supacc$/) {
+ $ligs =~ s[(\n \(LABEL )$rchar\)(?!\n \(LIG.*$)]
+ [$&$1$char$acc)]gm
+ unless $ligs =~ /\n \(LABEL $char$acc\)$/m;
+ $ligs =~ s[(\n \(LABEL )$rchar\)(\n \(LIG.*$)+(?!\n \(STOP\))]
+ [$&$1$char$acc)]gm
+ unless $ligs =~ /\n \(LABEL $char$acc\)$/m;
+ $ligs =~ s[(\n \(KRN )$lchar( .*)$]
+ [$&$1$char$acc$2]gm;
+ }
+ else {
+ if ($ligs =~ /\n \(LABEL $char\).*?\(STOP\)/s) {
+ $nlabel = $olabel = $&;
+ $nlabel =~ s/(\n \(LABEL $char)\)/$1$acc)/
+ unless $ligs =~ /\n \(LABEL $char$acc\)/m;
+ $nlabel =~ s/\n \(LIG .*\)$//gm;
+ $nlabel =~ s/\n \(LABEL (?!$char$acc).*\)$//gm;
+ $nlabel =~ s/\n \(KRN ([A-Z]|quote).*\)$//gm;
+ $ligs =~ s/(\n \(LABEL )$char\).*?\(STOP\)/$olabel$nlabel/s;
+ }
+ @liglist = split /\n \(STOP\)/, $ligs;
+ foreach (@liglist) {
+ unless (/\n \(LABEL ([A-Zf]|quote).*\)$/m) {
+ s/(\n \(KRN $char)( .*\))$/$&$1$acc$2/gm;
+ }
+ }
+ $ligs = join("\n (STOP)", @liglist);
+ }
+}