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searxng/searx
Markus Heiser c80e82a855 [mod] DuckDuckGo: reversed engineered & upgrade to data_type: traits_v1
Partial reverse engineering of the DuckDuckGo (DDG) engines including a
improved language and region handling based on the enigne.traits_v1 data.

- DDG Lite
- DDG Instant Answer API
- DDG Images
- DDG Weather

docs/src/searx.engine.duckduckgo.rst:
  Online documentation of the DDG engines (make docs.live)

searx/data/engine_traits.json
  Add data type "traits_v1" generated by the fetch_traits() functions from:

  - "duckduckgo" (WEB),
  - "duckduckgo images" and
  - "duckduckgo weather"

  and remove data from obsolete data type "supported_languages".

searx/autocomplete.py:
  Reversed engineered Autocomplete from DDG.  Supports DDG's languages.

searx/engines/duckduckgo.py:
  - fetch_traits():  Fetch languages & regions from DDG.

  - get_ddg_lang(): Get DDG's language identifier from SearXNG's locale.  DDG
    defines its languages by region codes.  DDG-Lite does not offer a language
    selection to the user, only a region can be selected by the user.

  - Cache ``vqd`` value: The vqd value depends on the query string and is needed
    for the follow up pages or the images loaded by a XMLHttpRequest (DDG
    images).  The ``vqd`` value of a search term is stored for 10min in the
    redis DB.

  - DDG Lite engine: reversed engineered request method with improved Language
    and region support and better ``vqd`` handling.

searx/engines/duckduckgo_definitions.py: DDG Instant Answer API
  The *instant answers* API does not support languages, or at least we could not
  find out how language support should work.  It seems that most of the features
  are based on English terms.

searx/engines/duckduckgo_images.py: DDG Images
  Reversed engineered request method.  Improved language and region handling
  based on cookies and the enigne.traits_v1 data.  Response: add image format to
  the result list

searx/engines/duckduckgo_weather.py: DDG Weather
  Improved language and region handling based on cookies and the
  enigne.traits_v1 data.

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
2 years ago
..
answerers
data [mod] DuckDuckGo: reversed engineered & upgrade to data_type: traits_v1 2 years ago
enginelib [mod] replace engines_languages.json by engines_traits.json 2 years ago
engines [mod] DuckDuckGo: reversed engineered & upgrade to data_type: traits_v1 2 years ago
infopage
metrics
network [mod] Shuffle httpx's default ciphers of a SSL context randomly. 2 years ago
plugins
search [mod] replace engines_languages.json by engines_traits.json 2 years ago
static
templates/simple [mod] replace searx.languages by searx.sxng_locales 2 years ago
translations [translations] update from Weblate 2 years ago
__init__.py
autocomplete.py [mod] DuckDuckGo: reversed engineered & upgrade to data_type: traits_v1 2 years ago
babel_extract.py
compat.py
exceptions.py
external_bang.py
external_urls.py
flaskfix.py
locales.py [mod] replace engines_languages.json by engines_traits.json 2 years ago
preferences.py [mod] replace engines_languages.json by engines_traits.json 2 years ago
query.py [mod] replace searx.languages by searx.sxng_locales 2 years ago
redisdb.py
redislib.py
results.py
searxng.msg
settings.yml [mod] Peertube: re-engineered & upgrade to data_type: traits_v1 2 years ago
settings_defaults.py [mod] replace searx.languages by searx.sxng_locales 2 years ago
settings_loader.py
sxng_locales.py [mod] DuckDuckGo: reversed engineered & upgrade to data_type: traits_v1 2 years ago
unixthreadname.py
utils.py [mod] replace searx.languages by searx.sxng_locales 2 years ago
version.py
webadapter.py
webapp.py [mod] replace searx.languages by searx.sxng_locales 2 years ago
webutils.py [mod] replace engines_languages.json by engines_traits.json 2 years ago