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#!/usr/bin/env ruby
#--
# Last Change: Tue May 16 18:13:36 2006
#++
=begin rdoc
== pldiff -- show the differences between two (v)pl files.
Usage: pldiff [options] file file
file can be tfm, pl, vpl or vf files.
-d, --delta DELTA Don't report differences whithin +/- DELTA percent
-c, --ignore-comments ignore comments
-k, --ignore-kern ignore difference in kerning information
-m, --mapenc ENC assume encoding ENC for destination encoding
-t, --texenc ENC assume encoding ENC for source encoding (TeX side)
-e, --encoding ENC assume encoding ENC for both in and out
-s, --skip-characters only look at fontdimen and main data
-h, --help Show this help
---
Author:: Patrick Gundlach <patrick@gundla.ch>
License:: Copyright (c) 2005 Patrick Gundlach.
Released under the terms of the GNU General Public License
=end
# :enddoc:
require 'optparse'
require 'ostruct'
require 'rfil/tex/kpathsea'
require 'rfil/tex/enc'
require 'rfil/tex/tfm'
require 'rfil/tex/vf'
include RFIL
def showmap(mapary)
str = ""
if mapary
mapary.each { |entry|
str << " | " << entry.join(" ") << "\n"
}
end
str
end
def plopen(filename)
case filename
when /\.tfm$/
return TFM.new.read_tfm(filename)
when /\.vf$/
# change to that dir first
currentdir=Dir.getwd
dirname=File.dirname(filename)
Dir.chdir(dirname)
fn=File.basename(filename)
vf=VF.new.read_vf(filename)
Dir.chdir(currentdir)
return vf
when /\.pl$/
return TFM.new.read_pl(filename)
when /\.vpl$/
return TFM.new.read_pl(filename)
else
puts "Unknown format: #{filename}"
exit 1
end
end
include TeX
options=OpenStruct.new
kpse=Kpathsea.new
ARGV.options { |opts|
opts.banner = "Usage: #{File.basename($0)} [options] file file"
opts.separator "file can be tfm, pl, vpl or vf files."
opts.on("--delta","-d DELTA", Float,
"Don't report differences whithin +/- DELTA percent") { |d|
options.delta=d
}
opts.on("--ignore-comments", "-c", "ignore comments") { |i|
options.ignore_comments=true
}
opts.on("--ignore-kern", "-k", "ignore difference in kerning information") { |k|
options.ignore_kern=true
}
opts.on("--mapenc", "-m ENC",
"assume encoding ENC for destination encoding") {|e|
options.mapencoding=e
}
opts.on("--texenc", "-t ENC",
"assume encoding ENC for source encoding (TeX side)") {|e|
options.texencoding=e
}
opts.on("--encoding", "-e ENC",
"assume encoding ENC for both in and out") {|e|
options.encoding=e
}
opts.on("--skip-characters", "-s", "only look at fontdimen and main data") {|s|
options.skip=true
}
opts.on_tail("--help", "-h", "Show this help") { puts opts; exit 0 }
opts.separator ""
opts.parse!
}
# untested:
if options.encoding
kpse.open_file(options.encoding,"enc") { |f|
options.encoding = ENC.new(f)
}
options.mapencoding=options.encoding
options.texencoding=options.encoding
end
if options.mapencoding.instance_of?(String)
kpse.open_file(options.mapencoding,"enc") { |f|
options.mapencoding = ENC.new(f)
}
end
if options.texencoding.instance_of?(String)
kpse.open_file(options.texencoding,"enc") { |f|
options.texencoding = ENC.new(f)
}
end
if ARGV.size != 2
puts "#{File.basename($0)}: Need exactly two file arguments."
puts "Try `#{File.basename($0)} --help' for more information."
exit 0
end
p1 = plopen(ARGV[0])
p2 = plopen(ARGV[1])
percent = options.delta ? options.delta/50.0 : 0
[:fontfamily,:codingscheme,:designsize].each { |sym|
if p1.send(sym) != p2.send(sym)
puts "#{sym} differ: #{p1.send(sym)} vs #{p2.send(sym)}"
end
}
fd1 = p1.params
fd2 = p2.params
str = ""
if fd1.size != fd2.size
str << "Difference in number of parameters (fontdimen)"
end
paramname=%w( X SLANT SPACE STRETCH SHRINK XHEIGHT QUAD EXTRASPACE )
if p1.codingscheme=="TeX math symbols"
paramname += %w(NUM1 NUM2 NUM3 DENOM1 DENOM2 SUP1 SUP2 SUP3
SUB1 SUB2 SUPDROP)
elsif p1.codingscheme=="TeX math extension"
paramname += %w(DEFAULT_RULE_THICKNESS BIG_OP_SPACING1
BIG_OP_SPACING2 BIG_OP_SPACING3 BIG_OP_SPACING4 BIG_OP_SPACING5)
end
for i in 1..fd1.size
next if fd1[i] == fd2[i]
if fd1[i]==nil
str << "Difference in #{paramname[i]}: nil vs. #{fd2[i]}" << "\n"
elsif
fd2[i]==nil
str << "Difference in #{paramname[i]}: #{fd1[i]} vs. nil" << "\n"
elsif (fd1[i] - fd2[i] ).abs > fd1[i] * percent
str << "Difference in #{paramname[i]}: #{fd1[i]} vs. #{fd2[i]}" << "\n"
end
end
if str.size > 0
puts "--------------------"
puts "fondimen difference:"
puts str
puts "--------------------"
end
exit if options.skip==true
str= ""
0.upto(255) do |i|
a=p1.chars[i]
b=p2.chars[i]
next unless a and b
l1=a[:lig_kern] ? p1.lig_kern[a[:lig_kern]] : nil
l2=b[:lig_kern] ? p2.lig_kern[b[:lig_kern]] : nil
next if a==b and l1==l2
if a==nil
str << "#{i}: no character at this slot in font 1" << "\n"
elsif b==nil
str << "#{i}: no character at this slot in font 2" << "\n"
else
chr=""
[:charwd, :charht, :chardp, :charic].each { |dim|
next if a[dim].to_f==b[dim].to_f
if a[dim]==nil
chr << " Difference in #{dim}: nil vs. #{b[dim]}" << "\n"
elsif b[dim]==nil
chr << " Difference in #{dim}: #{b[dim]} vs. nil" << "\n"
elsif (a[dim] - b[dim]).abs > a[dim] * percent
chr << " Difference in #{dim}: #{a[dim]} vs. #{b[dim]}" << "\n"
end
}
if l1 != l2 and options.ignore_kern != true
chr << " Difference in kern information" << "\n"
if l1==nil
str << " no lig/kern information for first font \n"
elsif l2==nil
str << " no lig/kern information for second font \n"
else
chr << " in font1 but not in font 2:" << (l1 - l2).join(" ").to_s << "\n"
chr << " in font2 but not in font 1:" << (l2 - l1).join(" ").to_s << "\n"
end
end
# if a[:ligkern] and b[:ligkern]
# if a[:ligkern][:lig] != b[:ligkern][:lig]
# chr << " Difference in lig information" << "\n"
# if a[:ligkern][:lig]
# a[:ligkern][:lig].each { |lig|
# chr << " | " << lig.inspect << "\n"
# }
# else
# chr << "nil"
# end
# chr << " vs.\n"
# if b[:ligkern][:lig]
# b[:ligkern][:lig].each { |lig|
# chr << " | " << lig.inspect << "\n"
# }
# else
# chr << "nil"
# end
# end
# if a[:ligkern][:krn]
# (a[:ligkern][:krn] - b[:ligkern][:krn]).each { |lig|
# if options.mapencoding
# chr << " | [#{options.mapencoding[lig[0]]} #{lig[1]}]\n"
# else
# chr << " | " << lig.inspect << "\n"
# end
# }
# else
# chr << "nil"
# end
# chr << " vs.\n"
# if b[:ligkern][:krn]
# (b[:ligkern][:krn] - a[:ligkern][:krn]).each { |lig|
# if options.mapencoding
# chr << " | [#{options.mapencoding[lig[0]]} #{lig[1]}]\n"
# else
# chr << " | " << lig.inspect << "\n"
# end
# }
# else
# chr << "nil"
# end
#end
# end
if a[:dvi] != b[:dvi]
chr << " Difference in map\n"
chr << showmap(a[:map])
chr << " vs.\n"
chr << showmap(b[:map])
end
if chr.length > 0
str << "#{i}: "
if options.texencoding
str << options.texencoding[i]
end
str << "\n"
str << chr
end
end
end
if str.length > 0
puts "Character entries:"
puts "------------------"
puts str
end
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