Arche Assets

Set of static assets used (mainly) for ARCHE data preprocessing or ARCHE information pages: * URI normalization rules used within the ACDH-CH.\ (stored in AcdhArcheAssets/uriNormRules.json) * Description of input data formats accepted by ARCHE.\ (stored in AcdhArcheAssets/formats.json)

The repository provides also Python 3 and PHP bindings for accessing those assets.

Installation & usage

Python

Install using pip3:
```
pip3 install acdh-arche-assets
```

Use with

from AcdhArcheAssets.uri_norm_rules import get_rules, get_normalized_uri, get_norm_id
print(f"{get_rules()}")

wrong_id = "http://sws.geonames.org/1232324343/linz.html"

good_id = get_normalized_uri(wrong_id)
print(good_id)
# "https://sws.geonames.org/1232324343/"

# extract ID from URL
norm_id = get_norm_id("http://sws.geonames.org/1232324343/linz.html")
print(norm_id)
# "1232324343"


from AcdhArcheAssets.file_formats import get_formats, get_by_mtype, get_by_extension

formats = get_formats()
matching_mapping = get_by_mtype('image/png')
matching_mapping = get_by_extension('png')

PHP

Install using using composer:

composer require acdh-oeaw/arche-assets

Usage with

require_once 'vendor/autoload.php';

print_r(acdhOeaw\UriNormRules::getRules());
print_r(acdhOeaw\UriNormRules::getRules(['viaf', 'gnd']));

print_r(acdhOeaw\ArcheFileFormats::getAll();
print_r(acdhOeaw\ArcheFileFormats::getByMime('application/json');
print_r(acdhOeaw\ArcheFileFormats::getByExtension('application/json');

Description of assets

URI normalization rules

Each rule consists of five properties:

name: a rule name
match: a regular expression matching a given URI namespace
replace: a regular expression replace expression normalizing an URI in a given namespace
resolve: a regular expression replace expression transforming an URI in a given namespace to an URL fetching an RDF data
format: a RDF serialization format to be requested while resolving the URL produced using the resolve field

Formats

A curated and growing list of file extensions. For each file extension mappings to the respective ARCHE Resource Type Category (stored in acdh:hasCategory) and Media Type (MIME type) (stored in acdh:hasFormat) are given. The indicated Media Type should only be used as a fallback; it is best practice to rely on automated Media Type detection based on file signatures.

Further information is provided as well.

fileExtension: File extension to be mapped.
name: Name(s) the format is known
archeCategory: The corresponding URI of the ARCHE Resource Type Category Vocabulary
dataType: A broad category to group formats in; mainly intended for visualisation purposes.
pronomID: ID(s) assigned by PRONOM
mimeType: Official Media Type(s) (formerly known as MIME types) registered at IANA.
informalMimeType: Other MIME types kown for the format
magicNumber: A constant numerical or text value used to identify a file format, e.g. Wikipedia list of file signatures
ianaTemplate: Link to template at IANA
reference: Link(s) to format specifications referenced by IANA and others
longTerm: Indicates if a format is suitable for long-term preservation.\ Possible values and their meaning
- yes - long-term format
- no - not suitable, another format should be used
- restricted - can be used for long-term preservation in some cases (see comment)
- unsure - status remains to be evaluated
archeDocs: Link to a place with more information for the format.
comment: Any other noteworthy information not stated elsewhere.

Developement (Python)

install needed developement packages pip install requirements_dev.txt

linting, tests and testcoverage

to run the test: tox
check coverage and create report: coverage run setup.py test and coverage html
check linting flake8

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