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Use XDG standard by default #304

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Use XDG standard by default #304

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6e58d67
Use XDG standard by default
c4llv07e Aug 30, 2023
1eeeb28
Fallback to default directories if XDG is not set
c4llv07e Sep 1, 2023
1cdeba5
fix XDG variable name
c4llv07e Sep 1, 2023
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15 changes: 10 additions & 5 deletions tg/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,14 +11,21 @@
_darwin = "Darwin"
_linux = "Linux"

def expand_path(path):
return os.path.expandvars(os.path.expanduser(path))
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What’s the purpose of expandvars() here? This seems like it might introduce unexpected behaviour in case any of the paths might have a "$" in them (for whatever reason).

The $XDG_* variables are already "expanded" by os.getenv, so e.g. os.getenv("XDG_CONFIG_HOME", "~/.config") following export XDG_CONFIG_HOME=$HOME/.xdg_config would return /home/user/.xdg_config, not $XDG_CONFIG_HOME/.xdg_config.

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If you are using default paths, then you're right. But what if someone changes cache folder location to "$XDG_CACHE_HOME/$USER/tg"? Then they couldn't expand it with os.getenv.
If you use the default paths, then you are right. But what if someone changes the location of the cache folder to "$XDG_CACHE_HOME/$USER/tg"? Then they won't be able to expand it with `os.getenv'.

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You mean change the location inside tg? Or set XDG_CACHE_HOME? If the former, then this PR is introducing a feature to the codebase beyond what it says it’s set out to do and unrelated to the XDG standard. If the latter, then $USER would be expanded by the system and stored in the XDG_CACHE_HOME envvar directly, so there’d be no need to expand it again inside tg.

And again, this may break in the case of a user for some reason or other decided to use a literal $ in their paths and it happens to resolve to a variable in the environment at time of evaluation.


CONFIG_DIR = os.path.expanduser("~/.config/tg/")
CONFIG_HOME = expand_path(os.getenv("XDG_CONFIG_HOME", "~/.config"))
CACHE_HOME = expand_path(os.getenv("XDG_CACHE_HOME", "~/.cache"))
DATA_HOME = expand_path(os.getenv("XDG_DATA_HOME", "~/.local/share"))
DOWNLOAD_DIR = expand_path(os.getenv("XDG_DOWNLOAD_DIR", "~/Downloads"))

CONFIG_DIR = os.path.join(CONFIG_HOME, "tg/")
CONFIG_FILE = os.path.join(CONFIG_DIR, "conf.py")
FILES_DIR = os.path.expanduser("~/.cache/tg/")
FILES_DIR = os.path.join(CACHE_HOME, "tg/")
MAILCAP_FILE: Optional[str] = None

LOG_LEVEL = "INFO"
LOG_PATH = os.path.expanduser("~/.local/share/tg/")
LOG_PATH = expand_path(DATA_HOME + "/tg/")

API_ID = "559815"
API_HASH = "fd121358f59d764c57c55871aa0807ca"
Expand Down Expand Up @@ -78,8 +85,6 @@

FILE_PICKER_CMD = "ranger --choosefile={file_path}"

DOWNLOAD_DIR = os.path.expanduser("~/Downloads/")

if os.path.isfile(CONFIG_FILE):
config_params = runpy.run_path(CONFIG_FILE) # type: ignore
for param, value in config_params.items():
Expand Down