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Diffstat (limited to 'scripts/context/ruby/base/kpse.rb')
| -rw-r--r-- | scripts/context/ruby/base/kpse.rb | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/scripts/context/ruby/base/kpse.rb b/scripts/context/ruby/base/kpse.rb new file mode 100644 index 000000000..0f9868784 --- /dev/null +++ b/scripts/context/ruby/base/kpse.rb @@ -0,0 +1,389 @@ +# module : base/kpse +# copyright : PRAGMA Advanced Document Engineering +# version : 2002-2005 +# author : Hans Hagen +# +# project : ConTeXt / eXaMpLe +# concept : Hans Hagen +# info : j.hagen@xs4all.nl +# www : www.pragma-ade.com + +# rename this one to environment +# +# todo: web2c vs miktex module and include in kpse + +require 'rbconfig' +require 'fileutils' + +# beware $engine is lowercase in kpse +# +# miktex has mem|fmt|base paths + +class String + + def split_path + if self =~ /\;/o || self =~ /^[a-z]\:/io then + self.split(";") + else + self.split(":") + end + end + + def sane_path + self.gsub(/\\/,'/') + end + +end + +class Array + + def join_path + self.join(File::PATH_SEPARATOR) + end + + def non_empty + self.delete_if do |i| + (i == nil || i.empty?) rescue false + end + end + +end + +module Kpse + + @@located = Hash.new + @@paths = Hash.new + @@scripts = Hash.new + @@formats = ['tex','texmfscripts','other text files'] + @@progname = 'context' + @@ownpath = $0.sub(/[\\\/][a-z0-9\-]*?\.rb/i,'') + @@problems = false + @@tracing = false + @@distribution = 'web2c' + @@crossover = true + @@mswindows = Config::CONFIG['host_os'] =~ /mswin/ + + # @@distribution = 'miktex' if ENV['PATH'] =~ /miktex[\\\/]bin/o + + # if ENV['PATH'] =~ /(.*?)miktex[\\\/]bin/i then + # @@distribution = 'miktex' unless $1 =~ /(texmf\-mswin[\/\\]bin|bin[\/\\]win32)/i + # end + + if @@mswindows && (ENV['PATH'] =~ /(.*?)miktex[\\\/]bin/i) then + @@distribution = 'miktex' unless $1 =~ /(texmf\-mswin[\/\\]bin|bin[\/\\]win32)/i + end + + @@re_true = /yes|on|true|1/i + + if (ENV['KPSEFAST'] =~ @@re_true) || (ENV['CTXMINIMAL'] =~ @@re_true) then + @@usekpserunner = true + require 'base/kpsefast' + require 'base/kpserunner' + else + @@usekpserunner = false + end + + if @@crossover then + ENV.keys.each do |k| + case k + when /\_CTX\_KPSE\_V\_(.*?)\_/io then @@located[$1] = ENV[k].dup + when /\_CTX\_KPSE\_P\_(.*?)\_/io then @@paths [$1] = ENV[k].dup.split(';') + when /\_CTX\_KPSE\_S\_(.*?)\_/io then @@scripts[$1] = ENV[k].dup + end + end + end + + def Kpse.distribution + @@distribution + end + + def Kpse.miktex? + @@distribution == 'miktex' + end + + def Kpse.web2c? + @@distribution == 'web2c' + end + + def Kpse.inspect + @@located.keys.sort.each do |k| puts("located : #{k} -> #{@@located[k]}\n") end + @@paths .keys.sort.each do |k| puts("paths : #{k} -> #{@@paths [k]}\n") end + @@scripts.keys.sort.each do |k| puts("scripts : #{k} -> #{@@scripts[k]}\n") end + end + + def Kpse.used_path(varname) + begin + if @@mswindows then + path = run("--expand-path=\$#{varname}") rescue '' + else + path = run("--expand-path='$#{varname}'") rescue '' + end + rescue + path = '' + end + return path.sane_path + end + + def Kpse.found(filename, progname=nil, format=nil) + begin + tag = Kpse.key(filename) # all + if @@located.key?(tag) then + return @@located[tag].sane_path + elsif FileTest.file?(filename) then + setvariable(tag,filename) + return filename + elsif FileTest.file?(File.join(@@ownpath,filename)) then + setvariable(tag,File.join(@@ownpath,filename)) + return @@located[tag].sane_path + else + [progname,@@progname].flatten.compact.uniq.each do |prg| + [format,@@formats].flatten.compact.uniq.each do |fmt| + begin + tag = Kpse.key(filename,prg,fmt) + if @@located.key?(tag) then + return @@located[tag].sane_path + elsif p = Kpse.kpsewhich(filename,prg,fmt) then + setvariable(tag,p.chomp) + return @@located[tag].sane_path + end + rescue + end + end + end + setvariable(tag,filename) + return filename.sane_path + end + rescue + filename.sane_path + end + end + + def Kpse.kpsewhich(filename,progname,format) + p = if progname && ! progname.empty? then "-progname=#{progname}" else '' end + f = if format && ! format.empty? then "-format=\"#{format}\"" else '' end + Kpse.run("#{p} #{f} #{filename}") + end + + def Kpse.which + Kpse.kpsewhich + end + + def Kpse.run(arguments) + puts arguments if @@tracing + begin + if @@problems then + results = '' + elsif @@usekpserunner then + results = KpseRunner.kpsewhich(arguments).chomp + else + results = `kpsewhich #{arguments}`.chomp + end + rescue + puts "unable to run kpsewhich" if @@tracing + @@problems, results = true, '' + end + puts results if @@tracing + return results + end + + + def Kpse.formatpaths + # maybe we should check for writeability + unless @@paths.key?('formatpaths') then + begin + setpath('formatpaths',run("--show-path=fmt").sane_path.split_path) + rescue + setpath('formatpaths',[]) + end + end + return @@paths['formatpaths'] + end + + def Kpse.key(filename='',progname='all',format='all') + [progname,format,filename].join('-') + end + + def Kpse.formatpath(engine='pdftex',enginepath=true) + + # because engine support in distributions is not always + # as we expect, we need to check for it; + + # todo: miktex + + if miktex? then + return '.' + else + unless @@paths.key?(engine) then + # savedengine = ENV['engine'] + if ENV['TEXFORMATS'] && ! ENV['TEXFORMATS'].empty? then + # make sure that we have a lowercase entry + ENV['TEXFORMATS'] = ENV['TEXFORMATS'].sub(/\$engine/io,"\$engine") + # well, we will append anyway, so we could also strip it + # ENV['TEXFORMATS'] = ENV['TEXFORMATS'].sub(/\$engine/io,"") + end + # use modern method + if enginepath then + formatpath = run("--engine=#{engine} --show-path=fmt") + else + # ENV['engine'] = engine if engine + formatpath = run("--show-path=fmt") + end + # use ancient method + if formatpath.empty? then + if enginepath then + if @@mswindows then + formatpath = run("--engine=#{engine} --expand-path=\$TEXFORMATS") + else + formatpath = run("--engine=#{engine} --expand-path=\\\$TEXFORMATS") + end + end + # either no enginepath or failed run + if formatpath.empty? then + if @@mswindows then + formatpath = run("--expand-path=\$TEXFORMATS") + else + formatpath = run("--expand-path=\\\$TEXFORMATS") + end + end + end + # locate writable path + if ! formatpath.empty? then + formatpaths, done = formatpath.split_path, false + formatpaths.collect! do |fp| + fp.gsub!(/\\/o,'/') + fp.gsub!(/\/\/$/o,'/') + # remove funny patterns + fp.sub!(/^!!/o,'') + fp.sub!(/\/+$/o,'') + fp.sub!(/(unsetengine|unset)/o,if enginepath then engine else '' end) + fp + end + formatpaths.delete_if do |fp| + fp.empty? || fp == '.' + end + # the engine path may not yet be present, find first writable + formatpaths.each do |fp| + # strip (possible engine) and test for writeability + fpp = fp.sub(/#{engine}\/*$/o,'') + if FileTest.directory?(fpp) && FileTest.writable?(fpp) then + # use this path + formatpath, done = fp.dup, true + break + end + end + unless done then + formatpaths.each do |fp| + fpp = fp.sub(/#{engine}\/*$/o,'') + FileUtils.makedirs(fpp) rescue false # maybe we don't have an path yet + if FileTest.directory?(fpp) && FileTest.writable?(fpp) then + # use this path + formatpath, done = fp.dup, true + break + end + end + end + unless done then + formatpath = '.' + end + end + # needed ! + FileUtils.makedirs(formatpath) rescue false + # fall back to current path + formatpath = '.' if formatpath.empty? || ! FileTest.writable?(formatpath) + # append engine but prevent duplicates + formatpath = File.join(formatpath.sub(/\/*#{engine}\/*$/,''), engine) if enginepath + FileUtils.makedirs(formatpath) rescue false + setpath(engine,formatpath) + # ENV['engine'] = savedengine + end + return @@paths[engine].first + end + end + + def Kpse.update + system('initexmf -u') if Kpse.miktex? + system('mktexlsr') + end + + # engine support is either broken of not implemented in some + # distributions, so we need to take care of it ourselves (without + # delays due to kpse calls); there can be many paths in the string + # + # in a year or so, i will drop this check + + def Kpse.fixtexmfvars(engine=nil) + ENV['ENGINE'] = engine if engine + texformats = if ENV['TEXFORMATS'] then ENV['TEXFORMATS'].dup else '' end + if texformats.empty? then + if engine then + if @@mswindows then + texformats = `kpsewhich --engine=#{engine} --expand-var=\$TEXFORMATS`.chomp + else + texformats = `kpsewhich --engine=#{engine} --expand-var=\\\$TEXFORMATS`.chomp + end + else + if @@mswindows then + texformats = `kpsewhich --expand-var=\$TEXFORMATS`.chomp + else + texformats = `kpsewhich --expand-var=\\\$TEXFORMATS`.chomp + end + end + end + if engine then + texformats.sub!(/unsetengine/,engine) + else + texformats.sub!(/unsetengine/,"\$engine") + end + if engine && (texformats =~ /web2c[\/\\].*#{engine}/o) then + # ok, engine is seen + return false + elsif texformats =~ /web2c[\/\\].*\$engine/io then + # shouldn't happen + return false + else + ENV['TEXFORMATS'] = texformats.gsub(/(web2c\/\{)(,\})/o) do + "#{$1}\$engine#{$2}" + end + if texformats !~ /web2c[\/\\].*\$engine/io then + ENV['TEXFORMATS'] = texformats.gsub(/web2c\/*/, "web2c/{\$engine,}") + end + return true + end + end + + def Kpse.runscript(name,filename=[],options=[]) + setscript(name,`texmfstart --locate #{name}`) unless @@scripts.key?(name) + cmd = "#{@@scripts[name]} #{[options].flatten.join(' ')} #{[filename].flatten.join(' ')}" + system(cmd) + end + + def Kpse.pipescript(name,filename=[],options=[]) + setscript(name,`texmfstart --locate #{name}`) unless @@scripts.key?(name) + cmd = "#{@@scripts[name]} #{[options].flatten.join(' ')} #{[filename].flatten.join(' ')}" + `#{cmd}` + end + + def Kpse.searchmethod + if @@usekpserunner then 'kpsefast' else 'kpsewhich' end + end + + private + + def Kpse.setvariable(key,value) + @@located[key] = value + ENV["_CTX_K_V_#{key}_"] = @@located[key] if @@crossover + end + + def Kpse.setscript(key,value) + @@scripts[key] = value + ENV["_CTX_K_S_#{key}_"] = @@scripts[key] if @@crossover + end + + def Kpse.setpath(key,value) + @@paths[key] = [value].flatten.uniq.collect do |p| + p.sub(/^!!/,'').sub(/\/*$/,'') + end + ENV["_CTX_K_P_#{key}_"] = @@paths[key].join(';') if @@crossover + end + +end |