#!/usr/bin/env tclsh

#===============================================================================
#
#    file2c.tcl
#
#    Convert a file into a header that can be #included from C.
#
#===============================================================================
## ####ECOSGPLCOPYRIGHTBEGIN####                                            
## -------------------------------------------                              
## This file is part of eCos, the Embedded Configurable Operating System.   
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
##
## eCos 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 or (at your option) any later      
## version.                                                                 
##
## eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,    
## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
##
## As a special exception, if other files instantiate templates or use      
## macros or inline functions from this file, or you compile this file      
## and link it with other works to produce a work based on this file,       
## this file does not by itself cause the resulting work to be covered by   
## the GNU General Public License. However the source code for this file    
## must still be made available in accordance with section (3) of the GNU   
## General Public License v2.                                               
##
## This exception does not invalidate any other reasons why a work based    
## on this file might be covered by the GNU General Public License.         
## -------------------------------------------                              
## ####ECOSGPLCOPYRIGHTEND####                                              
#===============================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):	jlarmour,bartv
# Contact(s):	
# Date:		2001-07-20
# Purpose:      
# Description:
# Usage:        file2c.tcl <file to encode> <output C header file>
#
#####DESCRIPTIONEND####
#===============================================================================



if { $argc != 2 } {
    puts "Usage: file2c.tcl <file to encode> <output C header file>"
    exit 1
}
set infile [lindex $argv 0]
set outfile [lindex $argv 1]

set status [ catch {
    set infilefd [open $infile "r"]
    fconfigure $infilefd -translation binary
    set data [read $infilefd]
    close $infilefd
} message]

if { $status != 0 } {
    error "Unable to read file $infile: $message"
}

set result ""

set status [ catch {
    set outfilefd [ open $outfile "w" ]
} message ]

if { $status != 0 } {
    error "Unable to create file $outfile: $message"
}

append result "/* This is a generated file. Do not edit. */\n\n"
append result "static CYGBLD_ATTRIB_ALIGN(4) const unsigned char filedata\[\] = {\n"

set datalength [ string length $data ]

set aligned_datalength [expr $datalength - ($datalength % 8)]

for { set i 0 } {$i < $aligned_datalength} {incr i 8} {
    binary scan $data "@[set i]H16" var0
    append result [format "    0x%2s, 0x%2s, 0x%2s, 0x%2s, 0x%2s, 0x%2s, 0x%2s, 0x%2s,\n" \
            [string range $var0  0  1] \
            [string range $var0  2  3] \
            [string range $var0  4  5] \
            [string range $var0  6  7] \
            [string range $var0  8  9] \
            [string range $var0 10 11] \
            [string range $var0 12 13] \
            [string range $var0 14 15]]
}

if { $aligned_datalength != $datalength } {
    append result "    "
    for { set i $aligned_datalength } {$i < $datalength} {incr i} {
        binary scan $data "@[set i]H2" var0
        append result [format "0x%2s, " $var0]
    }
}

# Remove either comma+newline or comma+space from the end
set result [string range $result 0 [expr [string length $result] - 3]]

append result "\n};"

puts $outfilefd $result
close $outfilefd