lsyncd/bin2carray.lua

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--============================================================================
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-- bin2carray.lua
--
-- License: GPLv2 (see COPYING) or any later version
--
-- Authors: Axel Kittenberger <axkibe@gmail.com>
--
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-- Transforms a binary file (the compiled lsyncd luacode) in a c array
-- so it can be included into the executable in a portable way.
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--
--============================================================================
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if #arg < 3
then
error( 'Usage: '..arg[ 0 ]..' [infile] [varname] [outfile]' )
end
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fin, err = io.open( arg[ 1 ], 'rb' )
if fin == nil
then
error( 'Cannot open "'..arg[ 1 ]..'" for reading: '..err )
end
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fout, err = io.open( arg[ 3 ], 'w' )
if fout == nil
then
error( 'Cannot open "'..arg[ 3 ]..'"for writing: '..err )
end
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fout:write( '/* created by '..arg[ 0 ]..' from file '..arg[ 1 ]..' */\n')
fout:write( '#include <stddef.h>\n' )
fout:write( 'const char '..arg[ 2 ]..'_out[] = {\n' )
while true
do
local block = fin:read( 16 )
if block == nil then break end
for i = 1, #block
do
local val = string.format( '%x', block:byte( i ) )
if #val < 2 then val = "0" ..val end
fout:write( "0x", val, "," )
end
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fout:write( '\n' )
end
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fout:write( '};\n\nsize_t '..arg[ 2 ]..'_size = sizeof('..arg[ 2 ]..'_out);\n' );
fin:close( );
fout:close( );