refactor!: rewrite in python
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.gitignore
vendored
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.gitignore
vendored
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# Created by https://www.toptal.com/developers/gitignore/api/c
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# Edit at https://www.toptal.com/developers/gitignore?templates=c
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# Created by https://www.toptal.com/developers/gitignore/api/python
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# Edit at https://www.toptal.com/developers/gitignore?templates=python
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### C ###
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# Prerequisites
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*.d
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### Python ###
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# Byte-compiled / optimized / DLL files
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__pycache__/
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*.py[cod]
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*$py.class
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# Object files
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*.o
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*.ko
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*.obj
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*.elf
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# Linker output
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*.ilk
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*.map
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*.exp
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# Precompiled Headers
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*.gch
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*.pch
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# Libraries
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*.lib
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*.a
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*.la
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*.lo
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# Shared objects (inc. Windows DLLs)
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*.dll
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# C extensions
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*.so
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*.so.*
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*.dylib
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# Executables
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*.exe
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*.out
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*.app
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*.i*86
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*.x86_64
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*.hex
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# Distribution / packaging
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.Python
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build/
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develop-eggs/
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dist/
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downloads/
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eggs/
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.eggs/
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lib/
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lib64/
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parts/
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sdist/
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var/
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wheels/
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share/python-wheels/
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*.egg-info/
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.installed.cfg
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*.egg
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MANIFEST
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# Debug files
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*.dSYM/
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*.su
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*.idb
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*.pdb
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# PyInstaller
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# Usually these files are written by a python script from a template
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# before PyInstaller builds the exe, so as to inject date/other infos into it.
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*.manifest
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*.spec
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# Kernel Module Compile Results
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*.mod*
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*.cmd
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.tmp_versions/
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modules.order
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Module.symvers
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Mkfile.old
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dkms.conf
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# Installer logs
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pip-log.txt
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pip-delete-this-directory.txt
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# End of https://www.toptal.com/developers/gitignore/api/c
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config.h
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crypto
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# Unit test / coverage reports
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htmlcov/
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.tox/
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.nox/
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.coverage
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.coverage.*
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.cache
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nosetests.xml
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coverage.xml
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*.cover
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*.py,cover
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.hypothesis/
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.pytest_cache/
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cover/
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# Translations
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*.mo
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*.pot
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# Django stuff:
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*.log
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local_settings.py
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db.sqlite3
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db.sqlite3-journal
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# Flask stuff:
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instance/
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.webassets-cache
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# Scrapy stuff:
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.scrapy
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# Sphinx documentation
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docs/_build/
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# PyBuilder
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.pybuilder/
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target/
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# Jupyter Notebook
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.ipynb_checkpoints
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# IPython
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profile_default/
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ipython_config.py
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# pyenv
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# For a library or package, you might want to ignore these files since the code is
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# intended to run in multiple environments; otherwise, check them in:
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# .python-version
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# pipenv
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# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
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# However, in case of collaboration, if having platform-specific dependencies or dependencies
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# having no cross-platform support, pipenv may install dependencies that don't work, or not
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# install all needed dependencies.
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#Pipfile.lock
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# poetry
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# Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
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# This is especially recommended for binary packages to ensure reproducibility, and is more
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# commonly ignored for libraries.
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# https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
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#poetry.lock
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# pdm
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# Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
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#pdm.lock
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# pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
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# in version control.
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# https://pdm.fming.dev/#use-with-ide
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.pdm.toml
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# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
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__pypackages__/
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# Celery stuff
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celerybeat-schedule
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celerybeat.pid
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# SageMath parsed files
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*.sage.py
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# Environments
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.env
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.venv
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env/
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venv/
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ENV/
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env.bak/
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venv.bak/
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# Spyder project settings
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.spyderproject
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.spyproject
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# Rope project settings
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.ropeproject
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# mkdocs documentation
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/site
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# mypy
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.mypy_cache/
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.dmypy.json
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dmypy.json
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# Pyre type checker
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.pyre/
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# pytype static type analyzer
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.pytype/
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# Cython debug symbols
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cython_debug/
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# PyCharm
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# JetBrains specific template is maintained in a separate JetBrains.gitignore that can
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# be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
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# and can be added to the global gitignore or merged into this file. For a more nuclear
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# option (not recommended) you can uncomment the following to ignore the entire idea folder.
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#.idea/
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### Python Patch ###
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# Poetry local configuration file - https://python-poetry.org/docs/configuration/#local-configuration
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poetry.toml
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# ruff
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.ruff_cache/
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# LSP config files
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pyrightconfig.json
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# End of https://www.toptal.com/developers/gitignore/api/python
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34
Makefile
34
Makefile
@ -1,34 +0,0 @@
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CFLAGS := -Wall -Wpedantic -Wextra -MMD
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LDFLAGS := -lcurl
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SRC := crypto.c \
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OBJ := $(SRC:.c=.o)
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DEP := $(SRC:.c=.d)
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NAME := crypto
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all: crypto
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$(OBJ): config.h
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config.h:
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cp config.def.h $@
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$(NAME): $(OBJ)
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$(CC) -o $@ $(LDFLAGS) $(OBJ)
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clean:
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$(RM) $(OBJ) $(DEP)
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fclean: clean
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$(RM) $(NAME)
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re: fclean
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$(MAKE)
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debug: fclean
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CFLAGS=-g3 $(MAKE)
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.PHONY: all clean fclean re debug
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-include $(DEP)
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22
README.md
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README.md
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# crypto
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Get your current holding in crypto from Binance in your own currency.
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Makefile inspired from suckless
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## Dependencies
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### Arch
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```console
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# pacman -S curl
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```
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### Debian 11+
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```console
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# apt-get install libcurl4-dev
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```
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Get your current holding in crypto from CoinGecko in your own currency.
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## How-To
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Set your coins, your currency and the format you want the output in crypto
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You can get a list of valid id with:
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```console
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$ make
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$ curl https://api.coingecko.com/api/v3/coins/list
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```
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Set your settings in config.h
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```console
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$ make
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$ ./crypto
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```
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12
config.def.h
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config.def.h
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#define FMT "%s=$%.2f"
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// curl https://api.coingecko.com/api/v3/simple/supported_vs_currencies
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#define VS "usd"
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// curl https://api.coingecko.com/api/v3/coins/list
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static const struct wallet_s {
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char *id; char *fmt;
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} WALLET[] = {
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{"bitcoin", "BTC"},
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{0},
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};
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30
crypto
Executable file
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crypto
Executable file
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#!/usr/bin/env python3
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import json
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import requests
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# [[id, symbol]]
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COINS = [
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["bitcoin", "BTC"],
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]
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CUR = "usd"
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FMT = "{coin}=${price:.0f}"
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def main():
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coin_ids = ",".join([coin for coin in list(zip(*COINS))[0]])
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url = f"https://api.coingecko.com/api/v3/simple/price?ids={coin_ids}&vs_currencies={CUR}"
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# {'bitcoin': {'usd': 69420}}
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prices = json.loads(requests.get(url).text)
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print(
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*[
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FMT.format(coin=coin[1], price=prices[coin[0]][CUR])
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for coin in COINS
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]
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)
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if __name__ == "__main__":
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main()
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90
crypto.c
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crypto.c
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#include <curl/curl.h>
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#include <errno.h>
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#include <error.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/param.h>
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#include "config.h"
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#define ARRLEN(a) (sizeof (a) / sizeof *(a))
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#define BUF_SIZE 256 * ARRLEN(WALLET)
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// {"bitcoin":{"usd":69420.69}}
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static int get_next_symbol(char *buf, float *price)
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{
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static const char output[] = "\"%*[a-z]\":{\"" VS "\":%f}";
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char *tmp = strtok(buf, ",");
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if (!tmp) {
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return 1;
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}
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return !sscanf(tmp, output, price);
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}
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static size_t write_callback(char *response, size_t s, size_t n, void *buf)
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{
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return snprintf(buf, MIN(s * n, BUF_SIZE), response);
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}
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static char *build_url(void)
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{
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const char base[] =
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"https://api.coingecko.com/api/v3/simple/price?ids=%s&vs_currencies="
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VS;
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size_t ids_size = 0;
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char *url;
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char ids[BUF_SIZE] = {0};
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for (size_t i = 0; WALLET[i].id; i++) {
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strcpy(ids + ids_size, WALLET[i].id);
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ids_size += strlen(WALLET[i].id);
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ids[ids_size++] = ',';
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}
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ids[ids_size - 1] = '\0';
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url = malloc(sizeof base + ids_size * (sizeof *url));
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if (!url) {
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return NULL;
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}
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sprintf(url, base, ids);
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return url;
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}
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static int perform_request(char *response)
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{
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char *url = build_url();
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CURL *curl = curl_easy_init();
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if (!url || !curl) {
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free(url);
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curl_easy_cleanup(curl);
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return 1;
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}
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);
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curl_easy_setopt(curl, CURLOPT_URL, url);
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curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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free(url);
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return 0;
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}
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int main(void)
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{
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char response[BUF_SIZE];
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int err = perform_request(response);
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float price;
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if (err) {
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error(1, errno, "cannot init curl");
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}
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err = get_next_symbol(response + 1, &price);
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for (size_t i = 0; !err && WALLET[i].id; i++) {
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if (i) {
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printf(" ");
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}
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printf(FMT, WALLET[i].fmt, price);
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err = get_next_symbol(NULL, &price);
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}
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printf("\n");
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return 0;
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}
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