Fix paths

[scx]

Fix paths

Allow to use a custom path for dictionaries

You can use the --with-dict-dir=PATH option to specify the path for dictionaries, e.g. /usr/share/hunspell, /usr/share/myspell, /app/share/hunspell, /usr/local/share/hunspell, /opt/share/hunspell, etc.

Respect the XDG Base Directory Specification

Add 3 options:

• --disable-xdg-dirs
• --enable-xdg-dirs
• --enable-xdg-dirs=LEVEL

Possible levels:

• 0: none (disabled)
• 1: +XDG_CONFIG_HOME
• 2: +XDG_DATA_HOME
• 3: +XDG_CACHE_HOME

Print platform specific paths

Print values of the platform specific paths:

• ?user
• ?local
• ?data
• ?dictionary
• ?temp

[scx]

Examples

XDG level 0

RHEL

Paths:
?user: "/home/scx/.aegisub"
?local: "/home/scx/.aegisub"
?data: "/usr/share/aegisub"
?dictionary: "/usr/share/hunspell"
?temp: "/tmp"

Freedesktop

Paths:
?user: "/home/scx/.aegisub"
?local: "/home/scx/.aegisub"
?data: "/app/share/aegisub"
?dictionary: "/app/share/hunspell"
?temp: "/tmp"

XDG level 1

RHEL

Paths:
?user: "/home/scx/.config/aegisub"
?local: "/home/scx/.config/aegisub"
?data: "/usr/share/aegisub"
?dictionary: "/usr/share/hunspell"
?temp: "/tmp"

Freedesktop

Paths:
?user: "/home/scx/.var/app/org.aegisub.Aegisub/config/aegisub"
?local: "/home/scx/.var/app/org.aegisub.Aegisub/config/aegisub"
?data: "/app/share/aegisub"
?dictionary: "/app/share/hunspell"
?temp: "/tmp"

XDG level 2

RHEL

Paths:
?user: "/home/scx/.config/aegisub"
?local: "/home/scx/.local/share/aegisub"
?data: "/usr/share/aegisub"
?dictionary: "/usr/share/hunspell"
?temp: "/tmp"

Freedesktop

Paths:
?user: "/home/scx/.var/app/org.aegisub.Aegisub/config/aegisub"
?local: "/home/scx/.var/app/org.aegisub.Aegisub/data/aegisub"
?data: "/app/share/aegisub"
?dictionary: "/app/share/hunspell"
?temp: "/tmp"

XDG level 3

RHEL

Paths:
?user: "/home/scx/.config/aegisub"
?local: "/home/scx/.local/share/aegisub"
?data: "/usr/share/aegisub"
?dictionary: "/usr/share/hunspell"
?temp: "/home/scx/.cache"

Freedesktop

Paths:
?user: "/home/scx/.var/app/org.aegisub.Aegisub/config/aegisub"
?local: "/home/scx/.var/app/org.aegisub.Aegisub/data/aegisub"
?data: "/app/share/aegisub"
?dictionary: "/app/share/hunspell"
?temp: "/home/scx/.var/app/org.aegisub.Aegisub/cache"

[scx]

I wonder if it would be better to use XDG_RUNTIME_DIR for cache/temp, and fallback to XDG_CACHE_HOME if it is not defined.
Currently, I am working on a similar patch for RawTherapee, which is required to share data between the sandoxed environment and the host.
I will come back to this soon.

[louisroyer]

This XDG levels thing is in my opinion unnecessary complex.

Some levels make no sense. I can't see a situation where someone would compile with --enable-xdg-dirs=1 or --enable-xdg-dirs=2:

• at level 1, what should go to $XDG_DATA_HOME would go to $XDG_CONFIG_HOME. This is even worst than using the old $HOME/.aegisub.
• level 2 is useless: if someone wants cache to /tmp they just have to set $XDG_DATA_CACHE accordingly.

Can't we just eliminate intermediate levels, and actually fully comply to the specification with an additional check for legacy paths at runtime for backward compatibility?