hdt-cpp | HDT C Library and Tools | Compression library

by rdfhdt C++ Version: v1.3.3 License: No License

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | hdt-cpp Summary

hdt-cpp is a C++ library typically used in Utilities, Compression applications. hdt-cpp has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

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hdt-cpp has a low active ecosystem.

It has 88 star(s) with 47 fork(s). There are 24 watchers for this library.

It had no major release in the last 12 months.

There are 32 open issues and 109 have been closed. On average issues are closed in 141 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of hdt-cpp is v1.3.3

Quality

hdt-cpp has 0 bugs and 0 code smells.

Security

hdt-cpp has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

hdt-cpp code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

hdt-cpp does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

hdt-cpp releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

It has 68 lines of code, 0 functions and 2 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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hdt-cpp Examples and Code Snippets

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Community Discussions

Trending Discussions on hdt-cpp

Enable to decode/encode correctly from bytes in python 3.7.3

QUESTION

Enable to decode/encode correctly from bytes in python 3.7.3

Asked 2019-Oct-20 at 23:49

I'm struggling with this:

b'"\xc2\xb7\xed\xa0\x81\xed\xb1\x96\xed\xa0\x81\xed\xb1\xb1\xed\xa0\x81\xed\xb1\x9d\xed\xa0\x81\xed\xb1\xbe\xed\xa0\x81\xed\xb1\xaf \xed\xa0\x81\xed\xb1\xa9\xed\xa0\x81\xed\xb1\xa4\xed\xa0\x81\xed\xb1\x93\xed\xa0\x81\xed\xb1\xa9\xed\xa0\x81\xed\xb1\x9a\xed\xa0\x81\xed\xb1\xa7\xed\xa0\x81\xed\xb1\x91"@en'

which comes from a binary format coming from the HDT compressed version (https://github.com/rdfhdt/hdt-cpp) of (dbpedia 3.5.1 (http://dbpedia.org/page/Shavian_alphabet)) and is well decoded in utf8 by this website (https://mothereff.in/utf-8)

And the meaning is: "· "@en

But in python 3.7.3 I encountered the well-known error: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xed in position 3: invalid continuation byte when trying to mystring.decode('utf8')

If I try to do the contrary: '"· "@en'.encode('utf8)I get the following representation: b'"\xf0\x90\x91\x96\xf0\x90\x91\xb1\xf0\x90\x91\x9d\xf0\x90\x91\xbe\xf0\x90\x91\xaf \xf0\x90\x91\xa8\xf0\x90\x91\xa4\xf0\x90\x91\x93\xf0\x90\x91\xa9\xf0\x90\x91\x9a\xf0\x90\x91\xa7\xf0\x90\x91\x91"@en' which is not the exact same string, but is then decoded repr.decode('utf8') correctly into the same thing....

Can someone help me to understand why decoding the first bytes string is not working? I know the first bytes string is not a valid UTF-8 string due to the error. But then, why is it well decoded by the website I linked and cant be done by python? Thank you in advance!

FINAL EDIT After having accepted the answer I did a few extra researches on this and found this string was encoded using the CESU-8 codec. Which is clearly deprecated today. But some are still using it... So, I found a package which write a variants of the utf-8 codec which can decode this string. I think it will help a lot of people with the same problem as me. Python library: https://github.com/LuminosoInsight/python-ftfy The added codec is 'utf-8-variants'. I hope this will help people in the same needs than me.

...

ANSWER

Answered 2019-Oct-19 at 21:17

It seems that Python does not want to accept some sequence of bytes as valid UTF-8, whereas some website (https://mothereff.in/utf-8) accepts it. One of them must be wrong, right? Let's see.

The first two bytes (b'\xc2\xb7') are accepted by Python. The first thing which Python does not like is this: \xed\xa0\x81\xed\xb1\x96, which is interpreted on that website as .

Let's look at \xed\xa0\x81\xed\xb1\x96 in binary format:

Source https://stackoverflow.com/questions/58464865

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Vulnerabilities

No vulnerabilities reported

Install hdt-cpp

To compile and install, run the following commands under the directory hdt-cpp. This will also compile and install some handy tools.
Sometimes, the above instructions do not result in a working HDT installation. This section enumerates common issues and their workaround. The support for Kyoto Cabinet was never finished and is currently suspended. It is for the time being not possible to compile HDT with KyotoCabinet. Serd is not 0.28+, probably because of the package manager. Built it manually at https://github.com/drobilla/serd.