#! /bin/sh
# The next line is executed by /bin/sh, but not Tcl \
exec tclsh $0 ${1+"$@"}

# OpenSTA, Static Timing Analyzer
# Copyright (c) 2019, Parallax Software, Inc.
# 
# 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 3 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, see <https://www.gnu.org/licenses/>.

# Usage: TclEncode encoded_filename var_name tcl_init_dir tcl_filename...
# Encode the contents of tcl_filenames into a C character array
# named var_name in the file encoded_filename.
# Each TCL file is encoded as a separate string of three digit decimal numbers
# that is unencoded and evaled on startup of the application.  
# The init variable character array is terminated with a NULL pointer.

set encoded_filename [lindex $argv 0]
set init_var [lindex $argv 1]
set init_filenames [lrange $argv 2 end]

set mail_log 0
if [info exists env(STA_MAIL_LOG)] {
  set mail_log $env(STA_MAIL_LOG)
}

# Microcruft Visual C-- ridiculously short max string constant length.
set max_string_length 2000

set out_stream [open $encoded_filename w]
puts $out_stream "// TCL init file encoded by TclEncode.tcl"
puts $out_stream "namespace sta {"
puts $out_stream "const char *$init_var\[\] = {"
puts -nonewline $out_stream "\""
set encoded_length 0

binary scan "\n" c newline_enc

proc encode_line { line } {
  global encoded_length max_string_length
  global newline_enc out_stream

  set length [string length $line]
  set i 0
  while { $i < $length } {
    set ch [string index $line $i]
    binary scan $ch c enc
    puts -nonewline $out_stream [format "%03d" $enc]
    incr i
    incr encoded_length 3
    if { $encoded_length > $max_string_length } {
      puts $out_stream "\","
      puts -nonewline $out_stream "\""
      set encoded_length 0
    }
  }
  puts -nonewline $out_stream [format "%03d" $newline_enc]
  incr encoded_length 3
}

proc encode_file { filename } {
  set in_stream [open $filename r]
  while {![eof $in_stream]} {
    gets $in_stream line
    encode_line $line
  }
  close $in_stream
}

foreach filename $init_filenames {
  encode_file $filename
}

# See stax/src/Notify.tcl
if { $mail_log } {
  puts $out_stream "\","
  puts -nonewline $out_stream "\""
  puts -nonewline $out_stream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
}

puts $out_stream "\","
# NULL string to terminate char* array.
puts $out_stream "0"
puts $out_stream "};"
puts $out_stream "} // namespace"
close $out_stream