source: vis_dev/vis-2.1/share/vis/ioBlifToMv.nawk @ 15

#!nawk -f

#**CFile***********************************************************************
#
# FileName    [ioBlifToMv.nawk]
#
# PackageName [io]
#
# Synopsis    [A nawk script to convert a blif file into a blif-mv file.]
#
# Description [A nawk script to convert a blif file into a blif-mv file.
# The blif file should be free of errors. The script ignores synthesis related
# information.]
#
# SeeAlso     []
#
# Author      [Rajeev K. Ranjan, Yuji Kukimoto]
#
# Copyright   [Copyright (c) 1994-1996 The Regents of the Univ. of California.
# All rights reserved.
#
# Permission is hereby granted, without written agreement and without license
# or royalty fees, to use, copy, modify, and distribute this software and its
# documentation for any purpose, provided that the above copyright notice and
# the following two paragraphs appear in all copies of this software.
#
# IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
# DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
# OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
# CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN
# "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE
# MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.]
#
#*****************************************************************************/

BEGIN {
        subckt_counter = 0
        while (my_getline()){
                main()
        }
        if (flag){
                print ".end"
        }
}

function main(){
        while (1) {
                if ($1 == ".model"){
                        print
                        while (last_char("\\")==1){
                                getline
                                print
                        }       
                        flag = 1;
                        break
                }
                if ($1 == ".end"){
                        print
                        flag = 0;
                        break
                }
                if ($1 == ".inputs" || $1 == ".outputs"){
                        print
                        while (last_char("\\")==1){
                                getline
                                print
                        }
                        break
                }
                if ($1 == ".subckt"){
                        fieldCounter = 0;
                        do{
                                last_char_back_slash = last_char("\\")
                                gsub("\\\\","")
                                for (i=1; i<=NF; i++){
                                        fieldArray[fieldCounter] = $i;
                                        fieldCounter++;
                                }
                                if (last_char_back_slash) getline
                        } while (last_char_back_slash)

                        printf("%s %s %d ", fieldArray[0], fieldArray[1], subckt_counter)
                        subckt_counter++;
                        for (i=2; i<fieldCounter-1; i++){
                                printf("%s ", fieldArray[i])
                        }
                        printf("%s\n", fieldArray[fieldCounter-1]);
                }
                if ($1 == ".latch"){
                        fieldCounter = 0;
                        do{
                                last_char_back_slash = last_char("\\")
                                gsub("\\\\","")
                                for (i=1; i<=NF; i++){
                                        fieldArray[fieldCounter] = $i;
                                        fieldCounter++;
                                }
                                if (last_char_back_slash) getline
                        } while (last_char_back_slash)

                        print fieldArray[0], " ", fieldArray[1], " ", fieldArray[2]
                        print ".reset ", fieldArray[2]
                        if ((fieldCounter == 4) || (fieldCounter == 6)){
                                resetValue = fieldArray[fieldCounter-1];
                                if (resetValue == "0" || resetValue == "1")
                                        print resetValue
                                else
                                        print "-"
                        }
                        else {
                                print "0"
                        }
                        break
                }
                if ($1 == ".names"){
                        print
                        while (last_char("\\")==1){
                                getline
                                print
                        }       
                        if (my_getline() == 0) break
                        if (row_of_table()){
                                if (last_char("0"))
                                        print ".def 1"
                                else
                                        print ".def 0"
                                while (1){
                                        gsub("1","1 ")
                                        gsub("0","0 ")
                                        gsub("-","- ")
                                        for(i = 1; i< NF; i++)
                                                printf("%s ",$i)
                                        printf("%s",$NF)
                                        printf("\n")
                                        if (my_getline() == 0) break
                                        if (row_of_table()) 
                                                continue
                                        else 
                                                break
                                }
                                continue
                        }
                        else {
                                print ".def 0"
                                continue
                        }
                }
                if ($1 == ".exdc"){ # ignore the rest of the file
                        while (getline){
                        }
                        break
                }
                while (last_char("\\")==1)
                                getline
                break
        }
}

function last_char(char,  linelength, lastchar){
        linelength = length
        lastchar = substr($0, linelength)
        if (lastchar == char)
                return 1
        else
                return 0
}

function first_char(char, firstchar){
        firstchar = substr($1,1,1)
        if (firstchar == char)
                return 1
        else 
                return 0
}

function row_of_table(){
        if (first_char("1") || first_char("0") || first_char("-"))
                return 1
        else 
                return 0
}


function my_getline(){
        while (getline){
                if ((NF == 0) || first_char("#"))
                        continue
                return 1
        }
        return 0
}