#!/usr/bin/tclsh
#------------------------------>  Tcl - script  <-----------------------------#
#- Copyright (C) 199x by International Computer Science Institute            -#
#- This file is part of the GNU Sather package. It is free software; you may -#
#- redistribute  and/or modify it under the terms of the  GNU General Public -#
#- License (GPL)  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 Doc/GPL for more details.        -#
#- The license text is also available from:  Free Software Foundation, Inc., -#
#- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA                     -#
#------------->  Please email comments to <bug-sather@gnu.org>  <-------------#

# Usage once-change <file name>
proc debugPuts { msg } {
#    puts "once-change ${msg}"
}
	
proc getAllFile { fname } {
    set ret ""
    if { [file exists ${fname}] } {
	set f [open ${fname} r]
	set ret [read $f]
	close $f
    } else {
	puts "No File found: $fname"
	set ret "No File Found:${fname}"
    }
    return $ret
}


proc run { } {
    puts "This script will attempt to convert all .sa files here to 1.1"
    puts "The result will be files stored with suffixes of .1.1"
    set fileList [ makeFileList ]
    processFiles ${fileList}
}

# Running consists of converting all sather files in the current directory
# into lined-<sather-file-name>.gen.html which has the html version of the file
proc processFiles { allFiles } {
    puts "Number of files:"
    puts [ llength ${allFiles} ]
    foreach fname ${allFiles} {
	# debugPuts "Once change: ${fname} to ${fname}.new"
	set infile [open ${fname} r]
	set fileNameOnly ${fname}
	set outfilename "${fileNameOnly}.1.1"
	puts "***********Generating ${fileNameOnly}"
	set outfile [open $outfilename w]
	set txt [read $infile]
	close $infile
	markupSather $txt $outfile ${fname}
	close $outfile
    }
}

# puts "Sourcing makeFileList"
proc makeFileList { } {
    # Return a list of files from the module
    global gClassDef
    
    set fileList [glob -nocomplain -- *.sa]
    return ${fileList}
}
# puts "Sourcing markupSather"
# ######################## MAIN ROUTINE #################################
# Split up file into lines
# Split each line into a header and rest
# by getting confused by stuff in pre and comments
proc markupSather { txt outFile fileName } {
    
    puts ${outFile} "---------------------------> Sather 1.1 source file <--------------------------"
    set txtl [ split $txt "\n" ]
    set txtlsize [ llength $txtl ] 
    # debugPuts "split text"
    
    set firstline [lindex ${txtl} 0]
    set convertPt [string first "Sather 1.1 source file" ${firstline}]
    if { $convertPt != -1 } {
	puts "Warning! File ${fileName} seems to have already been converted"
	puts $outFile ${txt}
	return 
    }
    set lineno 0
    while { $lineno < $txtlsize } {
	set thisline [ lindex $txtl $lineno ]
	set comPt [string first "--" ${thisline} ]
	if {$comPt == -1 } {
	    # No comment on this line
	    set codePart ${thisline}
	} else {
	    if {$comPt == 0 } {
		set codePart ""
	    } else {
		set codePart [string range ${thisline} 0 [expr ${comPt} - 1]]
	    }
	}
	set abstractPt [string first "abstract" ${codePart}]
	if {$abstractPt != -1 } {
	    puts "abstract is a keyword. Fix line ${lineno} of ${fileName}"
	    puts "$thisline"
	}
	regsub "^type " ${thisline} "abstract class " thisline
	set immutablePt [string first "immutable" ${codePart}]
	if {$immutablePt != -1 } {
	    puts "immutable is a keyword. Fix line ${lineno} of ${fileName}"
	}
	regsub "^value class " ${thisline} "immutable class " thisline
	set bindPt [string first ".bind" ${codePart}]
	if {$bindPt != -1 } {
	    puts "bind is now a keyword. Fix line ${lineno} of ${fileName}"
	}
	set bindPt [string first "bind(" ${codePart}]
	if {$bindPt != -1 } {
	    puts "bind is now a keyword. Fix line ${lineno} of ${fileName}"
	}
	regsub "#ROUT" ${thisline} "bind" thisline
	set oncePt [string first "once" ${codePart}]
	if {$oncePt != -1 } {
	    puts "once is now a keyword. Fix line ${lineno} of ${fileName}"
	}

        set isPt [string first "is" ${thisline}]
	set prePt [string first "pre" ${thisline}]
	set postPt [string first "post" ${thisline}]
	set rest ""
	set codePart ${thisline}
	if {$prePt != -1 } {
	    set rest [string range ${codePart} ${prePt}  end]
	    set codePart  [string range ${codePart} 0 [expr $prePt -1]]
	} elseif {$postPt != -1 } {
	    set rest [string range ${codePart} ${postPt}  end]
	    set codePart  [string range ${codePart} 0 [expr $postPt -1]]
	} elseif {$isPt != -1 } {
	    set rest [string range ${codePart} ${isPt}  end]
	    set codePart  [string range ${codePart} 0 [expr $isPt -1]]
	}
	set newCode [changeCode ${codePart} ]
	incr lineno
	puts $outFile "${newCode}${rest}"
    }
}

debugPuts "souring htmlifycode"
proc changeCode { codePart  } {
    set retVal ${codePart}

    set match [regexp {^  ( |  )end;.*$} ${codePart} ]
    if { ${match} } {
	return ${codePart}
    }   
    set match [regexp {^  ( |  )(private )*([a-z][a-zA-Z_0-9!]*!\((.*)\))} ${codePart} ]
    if { ${match} } {
	puts "Matched:${codePart}"
	
	regsub  {^  ( |  )(private )*([a-z][a-zA-Z_0-9!]*!)\((.*)\)(.*)$} ${codePart}\
		"\\4" argsVal

	set args [split ${argsVal} ","]
	set resArgs ""
	set first true
	foreach arg ${args} {
	    # puts stdout "${arg}-->" nonewline
	    set match [regexp "!" ${arg}]
	    if { ${match} } {
		regsub "!" ${arg} "" newArg
	    } else {
		set newArg "once ${arg}"
	    }
	    # puts "${newArg}" 
	    if { ${first} } {
		set resArgs "${resArgs} ${newArg}"
		set first "false"
	    } else {
		set resArgs "${resArgs},${newArg}"
	    }
	}
	regsub  {^  ( |  )(private )*([a-z][a-zA-Z_0-9!]*!)\((.*)\)(.*)$} ${codePart}\
		"  \\1\\2\\3(${resArgs})\\5" returnVal

	# puts "Args:${resArgs}"
	puts "Converted to:${returnVal}"
	return ${returnVal}
    }   

    return ${codePart}
}



debugPuts "ready to run"



run



