cust27/pruneNetlist.tcl

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###############################################################################
# Copyright (c) 2015-2024 by Altair Engineering, Inc.
# All rights reserved.
#
# Altair Engineering, Inc. makes this software available as part of the Vision
# tool platform.  As long as you are a licensee of the Vision tool platform
# you may make copies of the software and modify it to be used within the
# Vision tool platform, but you must include all of this notice on any copy.
# Redistribution without written permission to any third party, with or
# without modification, is not permitted.
# Altair Engineering, Inc. does not warrant that this software is error free
# or fit for any purpose.  Altair Engineering, Inc. disclaims any liability for
# all claims, expenses, losses, damages and costs any user may incur as a
# result of using, copying or modifying the software.
# =============================================================================
#   @script
#       Prune Netlist
#
#       description
#          Write a pruned netlist containing only flagged cells.
###############################################################################


# -----------------------------------------------------------------------------
# _pruneNetlist - generate new netlist file with all cells flagged green
# -----------------------------------------------------------------------------
#
proc _pruneNetlist {{outFname ""} {db {}}} {
    ##
    # If db is empty use current database
    #
    if {$db == {}} {
        set db [gui database get]
        if {$db == {}} {
            return
        }
    }

    ##
    # If the given file name is empty then show an save file dialog to browse
    # for an export file.
    #
    if {$outFname == ""} {
        set ftype {{"Prune File" ".out"}}
        set outFname [gui window fileDialog saveFile "Pruned File" $ftype]
        if {$outFname == ""} {
            return
        }
    }

    ##
    # collect spos info
    #
    $db foreach cell cell {
        ##
        # skip unflagged cells
        #
        if {![$db flag $cell is green]} {
            continue
        }

        ##
        # get spos of cells
        #
        $db spos foreach $cell fname beg end {
            lappend sposPerFile($fname) [list $beg $end]
        }
    }

    ##
    # open generated netlist file
    #
    set out [open $outFname w]
    chan configure $out -translation binary

    ##
    # output all spos chunks in the sequence of the read source files
    #
    $db spos foreachfile fname modtime {
        ##
        # skip files with no cell spos
        #
        if {![info exists sposPerFile($fname)]} {
            continue
        }

        ##
        # open source file
        #
        set in [open $fname r]
        fconfigure $in -translation binary

        ##
        # sort spos list in current file
        #
        set sortedSpos [lsort -integer -index 0 $sposPerFile($fname)]

        ##
        # output all sorted spos chunks of current file
        #
        foreach spos $sortedSpos {
            lassign $spos beg end

            ##
            # get chunk from source file
            #
            set len [expr {$end - $beg}]
            seek $in $beg
            set contents [read $in $len]

            ##
            # write chunk to output
            #
            puts $out $contents
        }

        ##
        # close input file
        #
        close $in
    }

    ##
    # close generated netlist files
    #
    close $out
}


# =============================================================================
# Add a new main menu entry 'Prune' to access the procedure of this script.
# =============================================================================
#
gui menu command {"Prune" "Prune Netlist"} {_pruneNetlist}