A tool that eases the process of translating documentation to render it with Doxygen
Project description
DoxyTH
DoxyTH stands for Doxygen inline-documentation Translation Helper. This small package aims to provide a quick way to generate Doxygen docs in HTML (LaTeX will come later) in different languages easily.
Nota Bene: Below, "a/the Doxyfile" refers to the Doxygen configuration file, however it might be named. However,
Doxyfile (in code) refers to the exact name of the file.
Pre-requisites
As DoxyTH is a support for Doxygen, you must have it installed. You can download it on this page.
Furthermore, Doxygen must be in your PATH. If it is not, or if you doubt it is, check how to do it for your system.
A simple search of <OS> put variable in path (OS being your Operating System) may be enough to find
what you are looking for.
You must have Python 3.6 or better, else you won't be able to install it through pip.
You should also know how to customise a Doxyfile (Doxygen configuration file).
Setup
Installation
You first have to install the package. You can install it automatically via pip
pip install doxyth
You can also install it by cloning the Github repository (deprecated)
Setting up the translations folder
In your project directory, create a directory that will contain all the translations.
You can name it however you want, even though a meaningful name like translations is still better.
Inside, you have to create a directory with the ISO 639-1 2-letters code for the desired language. Directories having more or less than 2 charaters will be ignored by DoxyTH, but unrecognised 2-characters directories will generate warnings.
This is an example layout (and the one I use for the DoxyTH package documentation!)
<path>\DOXYTH\TRANSLATIONS
|--- en/
| doxyth.dthdoc
| gendoc.dthdoc
|
|--- fr/
gendoc.dthdoc
(I simplified the tree for more readability)
In each language directory, you will need to create one (or more) .dthdoc files. All files having
another extension will be ignored.
Layout of a .dthdoc file
Each file follows the current format:
&doc_id <ID>
"""
<DOCUMENTATION>
"""
ID is the ID you will put in your code, and DOCUMENTATION (everything between the two """) is what will replace
the doclines where this ID is found.
WARNING: Be aware that the line breaks are important. The """ must be ALONE on their line.
DoxyTH will remove any empty lines between the start of the doclines and the start of your comment (same as between the end of your comment and the end of the doclines) to avoid problems when passing the file lines to a postprocess.
Layout of the language selection file
You can create two files that will alter the output of the language selection html file.
- One is called
_TEMPLATE.htmland must contain the main template. - The other is called
_SNIPPET.htmland must contain the language snippet that will be used for each language.
_TEMPLATE.html
This file contains the full template of the html file. Create it however you want, using variables to put things dynamically in the template.
Mandatory variables:
$langs: The group of snippets created and filled with variables.
Optional variables:
$doxythversion: The current version of DoxyTH$projectname: The name of the project (PROJECT_NAMEin the Doxyfile)$projectnumber: The version of the project (PROJECT_NUMBERin the Doxyfile)$projectbrief: The brief description of the project (PROJECT_BRIEFin the Doxyfile)
Example:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="generator" content="DoxyTH $doxythversion">
<title>$projectname: Language selection</title>
<style>...</style>
</head>
<body>
<div id="projectname">
$projectname
<span id="projectnumber">$projectnumber</span>
</div>
<div id="projectbrief">$projectbrief</div>
<hr>
<h2>Language selection</h2>
<div id="lang-container">
$langs
</div>
</body>
</html>
_SNIPPET.html
This file contains the snippet that will be used for each language.
Mandatory variables:
$lang: The language code
Example:
<a href="./$lang/index.html"><div class="lang">$lang</div></a>
In-code documentation
In your code, you can then start to write the doc_ids.
If you wish to replace doclines by a translations, put a doc_id following this layout:
"""
### &doc_id <PREFIX>:<ID>
"""
(For advanced users, the regex pattern is r"\s*###\s*&doc_id\s*")
WARNING: Don't forget the prefix! The prefix is the name of the documentation file
the doc_id was found in.
Example: If you have a file named mydocs.dthdoc which contains a my_doc_id ID inside,
The full doc_id you need to include in your code is mydocs:my_doc_id.
See below under Usage how to deactivate file prefixes, if you wish to do so.
Running the program
Usage
This is the usage provided by argparse itself:
usage: __main__.py [-h] [--verify] [-V] [--noverbose] [-F] [-D DOXYFILE] [-O OUTPUT]
[-P POSTPROCESS] [--listpostprocesses] [--debug | --mute]
[--nocleanup] [--skipgen]
translation_dir
Positional arguments
translation_dir: The translations folder explained above.
Optional arguments
-h: prints this usage message--verify: verifies the layout of the translations folder and all files inside, instead of actually generating the documentation-V(or--version): prints the version then exits.--noverbose: no output will be printed in the console.-F(or--nofileprefix): Deactivates the file prefixes when registeringdoc_ids.-D(or--doxyfile): Path to a custom Doxyfile. If this option is not provided, DoxyTH will look for a file namedDoxyfileby default. Passing this option is necessary only when your Doxygen configuration file is NOT namedDoxyfile-O(or--output): Path to the output directory. If not given, defaults todocs/.-P(or--postprocess): Passes the file lines to a postprocess instead of printing them back to Doxygen.--listpostprocesses: Lists all the available postprocesses, then exits.- [
--debug|--mute]:debugprints everything, including non-error from the Doxygen output, whereasmutetotally mutes Doxygen, including the warnings and errors (and also those of DoxyTH itself). Both are NOT recommended unless you perfectly know what you are doing. --nocleanup: Leaves the temporary files upon finishing generating the documentation. You shouldn't be using this option unless you know why you use it.--skipgen: Debug option. Skips the Doxygen docs generation. DO NOT use unless you know how to.
Generating documentation
If you want to generate the documentation from the different translations files, simply run the gendoc package
python -m doxyth.gendoc
or
python -m doxyth
using the usage above.
Output
The result will be in the output directory you gave, and if you gave none, in docs/.
The output directory will contain a subdirectory with the language code of said language, and inside will be a full Doxygen generation. Doxygen's output language will be set to said language, if a translation exists.
You will also find a index.html in the output directory. This file is created by DoxyTH, following a template html file. If you wish to customise it, see
Verifying the translations
If you wish to verify the translations files/directories, you can do so by running the verify package
python -m doxyth.verify
Its usage is as follows:
usage: verify.py [-h]
{directory,dir,d,languagedirectory,langdir,ld,file,f} documentation
positional arguments:
{directory,dir,d,languagedirectory,langdir,ld,file,f}
Sub-modules
directory (dir, d) Verify the documentation format of the whole
translations directory
languagedirectory Verify the documentation format of a language
(langdir, ld) directory
file (f) Verify the documentation format of a file
Positional arguments
documentation The path of either the directory or the file
If you choose to verify the whole directory, it will ouput the number of translations per language and print a warning if the number of translations of at least one language is different from the others.
If you choose to verify either a language directory or a file, it will print the number of doc_ids found in this file, or any errors if some are found.
Troubleshoot
"It doesn't work!". Yes, that happens, I'm sadly no master in my craft yet and you can sometimes get some unexpected
errors. First thing to do, re-run the program with the --debug option, so you can have the full output, Doxygen output
included.
I will do my best to list the errors you may encounter, and how to fix them. If you have any question, or the fix does not work, please create and issue, describe it the best possible, and file the full output (including the command itself) so I can work on it better and faster.
Exception: Unexpected EOF while reading.
The traceback of this exception will often look like this:
Traceback (most recent call last):
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\runpy.py", li
ne 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\runpy.py", li
ne 85, in _run_code
exec(code, run_globals)
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\doxyth.py", line 185, in <module>
DoxyTH()
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\doxyth.py", line 38, in __init__
self.__flow(args)
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\doxyth.py", line 61, in __flow
lines = self.__modify_lines()
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\doxyth.py", line 166, in __modify_lines
raise Exception(f"Unexpected EOF while reading.")
Explanation: The program found an unexpected EOF (End Of File) while reading it.
POTENTIAL CAUSES:
- You did not close a documentation in one of the translations files (.dthdoc files).
- You did not close a doclines in one of your files.
SOLUTIONS:
- Look into the file that was last read before the exception was raised. (Activating the
--debugoption is useful for that). The last line before the traceback will look likeReading C:/my_folder/my_file.py...which allows you to locate the file easily. - Check if the opening and closing tags (
""") of the doclines are ALONE on their line (only stripped characters, like tabs, spaces and newlines are allowed on this line).
IndexError: list index out of range
It often looks like this:
Traceback (most recent call last):
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\runpy.py", li
ne 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\runpy.py", li
ne 85, in _run_code
exec(code, run_globals)
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\__main__.py", line 3, in <module>
Gendoc()
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\gendoc.py", line 85, in __init__
self.flow(args)
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\gendoc.py", line 195, in flow
**self.retrieve_replacements_from_doxyfile()
File "C:\Users\MOI\AppData\Local\Programs\Python\Python36-32\lib\site-packages
\doxyth\gendoc.py", line 221, in retrieve_replacements_from_doxyfile
final['projectbrief'] = re.split(r'^PROJECT_BRIEF\s*=\s*["\'](.+)["\']', lin
e.strip())[-2]
Explanation: The list is not long enough to get the before-the-last element.
POTENTIAL CAUSES:
- This exception can be caused by a few things (everything managed by regexes, actually).
If the last line before the traceback is
Creating language selection file, then it might be because of how you formatted your doxyfile.
SOLUTIONS:
- If the last line before the traceback is
Creating language selection file, then check the Doxyfile and look at thePROJECT_NAMEandPROJECT_BRIEFvariables. The text you put in value must always be between quotes, may they be simple (') or double (").
The "silent" problems
Sometimes, there is a problem, even if the program ran successfully and no exception was thrown.
"Some of the characters that are in my code don't appear!": It may be because either the program or your computer decided to use an encoding that doesn't support those characters. I created a safe mode that encodes the text into ascii to avoid any further error with the text. So instead of crashing, it deletes said characters and continues. It's not the best, but it avoids not being able to create the documentation of a WHOLE file.
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