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#!/usr/bin/env texlua
--
-- global constants
--
VERSION = "0.9.1"
FILE_SUFFIX="_chtr"
PMX_CMD="pmxab"
--[[
pmxchords.lua: transposes chord macros (e,g., \ch.C.\) and calls pmxab
(c) Copyright 2013 Ondrej Fafejta <fafejtao@gmail.com>
https://github.com/fafejtao/pmxChords
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
--]]
--[[
ChangeLog:
version 0.9.1 2013-12-09 - added some options. Improved processing.
version 0.9 2013-12-05 - rewrite code from perl to lua...
--]]
function usage()
print("Usage: [texlua] pmxchords.lua basename[.pmx] ")
print(" 1. transpose chords into new file basename"..FILE_SUFFIX..".pmx")
print(" 2. call pmxab on transposed file basename"..FILE_SUFFIX..".pmx")
print(" 3. rename basename"..FILE_SUFFIX..".tex to basename.tex")
print("options: -v version")
print(" -h help")
print(" -s stop after first step. e.g. generate only transposed basename"..FILE_SUFFIX..".pmx file")
end
function whoami ()
print("This is pmxchords.lua version ".. VERSION)
end
whoami()
if #arg == 0 then
usage()
os.exit(0)
end
kpse.set_program_name("luatex") -- allows ChordsTr.lua to be installed in a texmf tree
require "ChordsTr"
function parseInputSignature(line)
-- parse input signature from pmx digits line. Only one line digits format is supported!
-- e.g.
-- 1 1 2 4 2 4 0 -1
-- signature is -1 : F major
local res = string.match(line, "^%s*[0-9]+%s+[0-9]+%s+[0-9]+%s+[0-9]+%s+[0-9]+%s+[0-9]+%s+[0-9]+%s+([%+%-]?[0-9]+)%s*$")
return tonumber(res)
end
function parseOutputSignature(line)
-- parse output signature from pmx
-- e.g.
-- K-2+2
-- output signature is +2 : D major
local res = string.match(line, "^K[%+%-]?[0-9]+([%+%-]?[0-9]+)")
return tonumber(res)
end
function handleErr(msg)
io.stderr:write(msg.."\n")
os.exit(2)
end
--
-- get file name without .pmx suffix
--
function getBaseFileName(fileName)
if fileName ~= "" and string.sub(fileName, -4, -1) == ".pmx" then
return string.sub(fileName, 1, -5)
else
return fileName
end
end
--
-- Make chords transposition. Generates new pmx file with transposed chords.
--
-- param baseName input file name without .pmx suffix
-- return outputBaseName transposed pmx file name without .pmx suffix
--
function makeChordsTransposition(baseName)
local inputFileName = baseName..".pmx"
local inputFile = io.open(inputFileName, "r")
if(inputFile == nil) then
handleErr("File does not exist: "..inputFileName)
end
local outputBaseName = baseName..FILE_SUFFIX -- output base name without suffix. Used for renaming generated .tex file ...
local outputFileName = outputBaseName..".pmx"
local outputFile = io.open(outputFileName, "w")
if(outputFile == nil) then
handleErr("Can not create temporary file: ".. outputFileName)
end
--
-- transpose chords from inputFile into outputFile
--
-- input and output signature will be parsed from input pmx file
--
local iSig = nil -- input signature
local chTr = nil -- chords transposition class
for line in inputFile:lines() do
if(chTr ~= nil) then
outputFile:write(chTr:lineTranspose(line).."\n")
else
outputFile:write(line.."\n")
end
if(iSig == nil) then
iSig = parseInputSignature(line)
if(iSig ~= nil) then
io.stderr:write("Chords: input signature detected: "..iSig .."\n")
end
elseif(chTr == nil) then
local oSig = parseOutputSignature(line)
if(oSig ~= nil) then
io.stderr:write("Chords: output signature detected: "..oSig .."\n")
chTr = ChordsTr(iSig, oSig)
end
end
end
inputFile:close()
outputFile:close()
return outputBaseName
end
--
-- Make pmxab process.
-- param baseName input file name without .pmx suffix
-- param outputBaseName transposed pmx file name without .pmx suffix
--
function pmxabProcess(baseName, outputBaseName)
--
-- call pmxab to generate .tex file
--
local pmxResCode = os.execute(PMX_CMD .. " " .. outputBaseName )
if (pmxResCode ~= 0 ) then
io.stderr:write("PMX process fail! "..outputBaseName .."\n")
os.exit(pmxResCode)
end
os.rename(outputBaseName..".tex", baseName..".tex")
-- remove temporary files
os.remove(outputBaseName..".pmx")
os.remove(outputBaseName..".pml")
os.remove("pmxaerr.dat")
end
narg = 1
onlyTranspose = false
repeat
this_arg = arg[narg]
if this_arg == "-v" then
os.exit(0)
elseif this_arg == "-h" then
usage()
os.exit(0)
elseif this_arg == "-s" then
onlyTranspose = true
else
local baseName = getBaseFileName(this_arg)
local outputBaseName = makeChordsTransposition(baseName)
if (not onlyTranspose) then
pmxabProcess(baseName, outputBaseName)
end
end
narg = narg + 1
until narg > #arg
|
