labwc/src/common
Johan Malm 698c7ace07 config: support merging multiple config files
Add the -m|--merge-config command line option to iterate backwards over
XDG Base Dir paths and read config/theme files multiple times.

For example if both ~/.config/labwc/rc.xml and /etc/xdg/labwc/rc.xml
exist, the latter will be read first and then the former (if
--merge-config is enabled).

When $XDG_CONFIG_HOME is defined, make it replace (not augment)
$HOME/.config. Similarly, make $XDG_CONFIG_DIRS replace /etc/xdg when
defined.

XDG Base Dir Spec does not specify whether or not an application (or a
compositor!) should (a) define that only the file under the most important
base directory should be used, or (b) define rules for merging the
information from the different files.

ref: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html

In the case of labwc there is a use-case for both positions, just to be
clear, the default behaviour, described by position (a) above, does NOT
change.

This change affects the following config/theme files:
  - rc.xml
  - menu.xml
  - autostart
  - environment
  - themerc
  - themerc-override
  - Theme buttons, for example max.xbm

Instead of caching global config/theme directories, create lists of paths
(e.g.  '/home/foo/.config/labwc/rc.xml', '/etc/xdg/labwc/rc.xml', etc).
This creates more common parsing logic and just reversing the direction
of iteration and breaks early if config-merge is not wanted.

Enable better fallback for themes. For example if a particular theme does
not exist in $HOME/.local/share/themes, it will be searched for in
~/.themes/ and so on. This also applies to theme buttons which now
fallback on an individual basis.

Avoid using stat() in most situations and just go straight to fopen().

Fixes #1406
2024-01-18 20:20:36 +00:00
..
buf.c common/buf.c: do not use memcpy for overlapping regions 2023-09-23 16:28:23 +01:00
dir.c config: support merging multiple config files 2024-01-18 20:20:36 +00:00
fd_util.c Fix coding style 2022-11-03 23:01:52 +01:00
file-helpers.c common/file-helpers.c: share file_exists() to reduce duplication 2023-09-17 19:26:41 +01:00
font.c Remove headers not being used directly 2023-12-22 20:19:39 +00:00
grab-file.c Add SPDX identifiers 2021-11-13 21:56:53 +00:00
graphic-helpers.c theme: create hover button fallbacks 2023-12-21 02:42:23 +01:00
match.c common: use fnmatch() for pattern matching 2023-10-01 14:17:29 +01:00
mem.c common: Add additional memory utilities (xzalloc() etc.) 2022-09-17 10:57:30 -04:00
meson.build common/file-helpers.c: share file_exists() to reduce duplication 2023-09-17 19:26:41 +01:00
nodename.c Fixed some typos 2024-01-04 19:32:51 +00:00
parse-bool.c Remove headers not being used directly 2023-12-22 20:19:39 +00:00
scaled_font_buffer.c scaled_scene_buffer: make dropping the buffer optional 2023-10-19 21:48:57 +01:00
scaled_scene_buffer.c scaled_scene_buffer: make dropping the buffer optional 2023-10-19 21:48:57 +01:00
scene-helpers.c chase: use wlroots tree node getters 2023-12-03 18:24:26 +00:00
spawn.c Remove headers not being used directly 2023-12-22 20:19:39 +00:00
string-helpers.c theme: create hover button fallbacks 2023-12-21 02:42:23 +01:00