Re: [libredwg] [bug #28502] help

[address@hidden]

http://parchive.sourceforge.net/
The technology is based on a 'Reed-Solomon Code' implementation that
allows for recovery of any 'X' real data-blocks for 'X' parity
data-blocks present. (Data-blocks referring to files OR much smaller
virtual slices of files).

On Wed, Jan 6, 2010 at 9:10 PM, address@hidden
<address@hidden> wrote:
> I found three libs,
>
> https://sourceforge.net/projects/rscode/develop
> http://www.ka9q.net/code/fec/
> http://www.schifra.com/
>
> What about first a tool to just extract the RS blocks into a  file
> that can be processed externally?
>
>
> On Wed, Jan 6, 2010 at 8:58 PM, Felipe Sanches <address@hidden> wrote:
>> we would ideally use a reed-solomon library to do that.
>>
>> On Wed, Jan 6, 2010 at 5:57 PM, Felipe Sanches <address@hidden> wrote:
>>>
>>> I asked myself this question when I reached this part of the DWG R2007
>>> header parsing. At that time I concluded that the answer was: learn how
>>> ReedSolomon encoding works. I tried. I understood it partially, but I havent
>>> yet been able to properly decode it. Be welcome to try!
>>>
>>> Felipe
>>>
>>> On Wed, Jan 6, 2010 at 5:27 PM, James Michael DuPont
>>> <address@hidden> wrote:
>>>>
>>>> URL:
>>>>  <http://savannah.gnu.org/bugs/?28502>
>>>>
>>>>                 Summary: help
>>>>                 Project: LibreDWG
>>>>            Submitted by: mdupont
>>>>            Submitted on: Wed 06 Jan 2010 08:27:50 PM CET
>>>>                Category: None
>>>>                Severity: 3 - Normal
>>>>              Item Group: None
>>>>                  Status: None
>>>>                 Privacy: Public
>>>>             Assigned to: None
>>>>             Open/Closed: Open
>>>>         Discussion Lock: Any
>>>>
>>>>    _______________________________________________________
>>>>
>>>> Details:
>>>>
>>>> here is a file we want to convert :
>>>> http://www.gimnechiske.org/files/Planimetria_de_Vitoria.dwg
>>>>
>>>>
>>>> Here is the output :
>>>> This file's version code is: AC1021
>>>> WARNING: This version of LibreDWG is only capable of properly decoding
>>>> version R2000 (code: AC1015) dwg-files.
>>>> This file's version code is: AC1021
>>>>  This version is not yet actively developed.
>>>> It will probably crash and/or give you invalid output.
>>>> 5 bytes of 0x00: 0x00 0x00 0x00 0x00 0x00
>>>> Unknown: 0x19
>>>> Byte 0x00, 0x01, or 0x03: 0x03
>>>> Preview Address: 0x00000D20
>>>> DwgVer: 27
>>>> MaintRelease: 25
>>>> Codepage: 30
>>>> Unknown: 0x00 0x1B 0x19
>>>> SecurityType: 0x00000000
>>>> Unknown long: 0x00000000
>>>> DWG Property Addr: 0x00000C80
>>>> VBA Project Addr: 0x00000000
>>>> 0x00000080: 0x00000080
>>>> Application Info Address: 0x0000A380
>>>> Reed-Solomon(255,239) encoded section:
>>>>
>>>> dc  0  0 d5 20 85  1  0  8 85  0  5 44  2 81 e5  0 40 f6 70 c7 45 60 6f
>>>> 4f  4
>>>>  a  a 60  3 5f 8c 82 43 67 68 30  2  b 49 49 66 53  0 92 d4  1 a0 62 b5
>>>> 5f 6f
>>>> c7 11  6 3a 81 92 30 7f 1d 36  2 db 4b 83 83 45 e0 35  5 6f ac d3  a  0
>>>> 77 14
>>>> 0  8 52  0  2 78  0  b 19  0  5 38  0  d 67  0  0  1 20 85 80  0  8 7f  0
>>>>  5
>>>> 8  2 81 87  0 40 19 70 c7 20 60 6f 7e  4  a  9 60  3 40 8c 82 77 67 68  0
>>>>  2
>>>> b  2 49 66 f8  0 92 37  1 a0 8c b5 5f 50 c7 11 6d 3a 81 d2 30 7f a4 36  2
>>>> 17
>>>> 4b 83  0 45 e0 a6  5 6f 60 d3  a  9 77 14  4  8 52 77  2 78  9  b 19  1
>>>>  5 38
>>>> 77  d 67  1  0  1  e 85 80 77  8 7f  0  5  8  2 81 87 72 40 19 64 c7 20
>>>> 7b 6f
>>>> 7e c2  a  9 d9  3 40 d5 82 77 96 68  0 da  b  2 45 66 f8 f0 92 37 60 a0
>>>> 8c  9
>>>> 5f 50 7f 11 6d 77 81 d2 29 7f a4 7e  2 17 77 83  0  2 e0 a6 c7 6f 60 f4
>>>>  a  9
>>>> 67 14  4  8 52 77  0 78  9 13 19  1 9d 38 77 ef 67  1 f9  1  e e5 80 77
>>>> 11 7f
>>>> 0 b6  8  2 10 87 72 76 19 64  8 20 7b  4 7e c2  2  9 d9 91 40 d5  8 77 96
>>>>  3
>>>> 0 da 93  2 45  0 f8 f0  1 37 60  6 8c  9  0 50 7f 4f 6d 77 87 d2 29 10 a4
>>>> 7e
>>>> 79 17 77 20  0  2 66 a6 c7  0 60 f4  f  9 67  1  4  8 62 77  0 df  9 13
>>>> a0  1
>>>> 9d bf 77 ef  d  1 f9 ff  e e5 db 77 11 36  0 b6 9e  2 10 b7 72 76  5 64
>>>>  8 75
>>>> 7b  4 5b c2  2 77 d9 91 55 d5  8 bb 96  3 19 da 93 c5 45  0  c f0  1 42
>>>> 60  6
>>>> 46  9  0 6d 7f 4f 58 77 87 c7 29 10  0 7e 79  0 77 20  0  2 66  0 c7  0
>>>> e9 f4
>>>> f 6f 67  1 b5  8 62 4c  0 df b2 13 a0 64 9d bf eb ef  d e7 f9 ff d7 e5 db
>>>> 72
>>>> 11 36 98 b6 9e e5 10 b7 a7 76  5 c1  8 75 64  4 5b be  2 77 1d 91 55 b3
>>>>  8 bb
>>>> e4  3 19 f0 93 c5 db  0  c b8  1 42 e7  6 46 fb  0 6d 3e 4f 58 85 87 c7
>>>> 3f 10
>>>> 0 92 79  0 b3 20  0 ac 66  0  0  0 dc a6  f d5 dd  1  1 da 62 85 85 df 44
>>>> 3f
>>>> a0 e5 3a bf f6 9e  d 45 fa ff 4f e9 db  a 87 36 5f ed 9e 43 1b b7 30 ce
>>>>  5 49
>>>> 1f 75 53 59 5b d4 bc 77 62 71 55 6f e2 bb  6 36 19 92 d2 c5 1d c2  c db
>>>> d2 42
>>>> 83  f 46 35 75 6d ac c8 58  0 83 c7  0 16  0  0 5d  0  0 56  0  0 59  0
>>>>  0 73
>>>> dc  0 53 d5 20 59  1  0 c8 85  0 99 44  2  e e5  0 2e f6 70 f9 45 60 b3
>>>> 4f  4
>>>> 86  a 60 90 5f 8c 19 43 67 55 30  2 53 49 49 eb 53  0 55 d4  1 7d 62 b5
>>>> 21 6f
>>>> c7 bc  6 3a 67 92 30  2 1d 36 ab db 4b 46 83 45 53 35  5 88 ac d3 8a  0
>>>> 77 7e
>>>> 0  8 70  0  2 aa  0  b d9  0  5 61  0  d ac e5 f5 56 57 fc 17 de da 31 6b
>>>> 55
>>>> 5d 9c b8 92 35  9 d2 7c a9 ff 3d 34 8a fb 92  7 ef 88  7 21 47 3a 11 31
>>>> 64 6c
>>>> 27 21 d0 f9 44 c8 4a 91 87 6e f9 e9 6f b5 4c b2 64 eb e7 d7 72 98 e5 a7
>>>> c1 64
>>>> be 1d b3 e4 f0 db b8 e7 fb 3e 85 3f 92 b3 ac  0 a6 dd da 85 3f 3a 9e fa
>>>> e9 87
>>>> ed 1b ce 1f 59 bc 71 e2 36 d2 c2 d2  f 75 c8 83 16 5d 56 59 73 53 59 c8
>>>> 99  e
>>>> 2e f9 b3 86 90 19 55 53 eb 55 7d 21 bc 67  2 ab 46 53 88 8a 7e 70 aa d9
>>>> 61 ac
>>>> b7 2d 6c 59  c 10 27 36 80 5f e2  3 f2 bc 48 e5 8c 1c 46 10 9a e5 fa 9c
>>>> f4 8e
>>>> 16 aa fd 91 e7 cc 84 f7 b8 66 a3 5b f9 fa 83 5b 7f 29 65 99 b8 1a ed d5
>>>> d3  1
>>>> ec f7 16 8a a5 23 9d ce 16 5e f9  8 b4 ed d7 7f eb 6e f6 15 44 2c 56  e
>>>> 90 71
>>>> fc 4c ca 3f cb 57 18 98 2f 80 29 69 8a 78 f2 41 dd b6 7d 25 1b fe fe  a
>>>> fe  2
>>>> ff b6 d1 97 24 b1 10 c6 3e 99 16 52 ba 77 2c 8f 64 30 4e 3c aa c9
>>>>
>>>> Decoding of DWG version R2007 header is not fully implemented yet.
>>>> Failed to decode file:
>>>> ../../openstreetmap/brazil/Planimetria_de_Vitoria.dwg
>>>>
>>>>
>>>> please help.
>>>> What do I have to do to get this working?
>>>>
>>>> mike
>>>>
>>>>
>>>>
>>>>
>>>>    _______________________________________________________
>>>>
>>>> Reply to this item at:
>>>>
>>>>  <http://savannah.gnu.org/bugs/?28502>
>>>>
>>>> _______________________________________________
>>>>  Message sent via/by Savannah
>>>>  http://savannah.gnu.org/
>>>>
>>>>
>>>>
>>>
>>
>>
>