Java, I use Java8 python3 pip install bs4 This is used to parse html to python object
python gen_javadoc.py directory
Example: python gen_javadoc.py ..\build\doc_java\
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Use python to generate the search data
python uses bs4, the beautifulsoup, to parse the javadoc html. Then the text of html will be collected as json. And the json data will be saved to a js file.
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Use javascript to read the json data
The json is in a js file, so you can read it to a var through javascript. And javascript generate search items with these data.
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The javadoc command
I run the javadoc command in Python. The key parameter is the -overview. This parameter can apply the body part of a html to the main page of javadoc. And you can jump to the search.html in your overview.html. Then you can layout your own search.html and add a searchbox on it.