shell completion for mangohud & mangohudctl

data/meson.build

@@ -2,3 +2,5 @@ install_man(
   files('mangohud.1'),
   install_dir: join_paths(get_option('mandir'), 'man1'),
 )
+
+subdir('shell-completions/bash')

data/shell-completions/bash/mangohud

@@ -0,0 +1,22 @@
+# bash completion for mangohud(1)                          -*- shell-script -*-
+
+_mangohud() {
+    local cur prev words cword split
+    _init_completion -s || return
+
+    for (( i = 1; i <= cword; i++ )); do
+        if [[ ${words[i]} != -* ]]; then
+            local root_command=${words[i]}
+            _command_offset "$i"
+            return
+        fi
+    done
+
+    $split && return
+
+    if [[ $cur == -* ]]; then
+        COMPREPLY=(--dlsym)
+        return
+    fi
+} &&
+    complete -F _mangohud mangohud

data/shell-completions/bash/mangohudctl

@@ -0,0 +1,17 @@
+# bash completion for mangohudctl(1)                       -*- shell-script -*-
+
+_mangohudctl() {
+    local cur prev words cword split
+    _init_completion -s || return
+
+    $split && return
+
+    if [[ $cword == 1 ]]; then
+        COMPREPLY=( $(compgen -W "set toggle" -- $cur) )
+    elif [[ $cword == 2 ]]; then
+        COMPREPLY=( $(compgen -W "$(mangohudctl 2>&1 | sed -n '/^Usage/d;/Attributes:/d;/Accepted/q;s/\s\+//;s/\s\+.*$//;p')" -- $cur) )
+    elif [[ $cword == 3 && ${words[1]} == set ]]; then
+        COMPREPLY=( $(compgen -W "true false" -- $cur) )
+    fi
+} &&
+    complete -F _mangohudctl mangohudctl

data/shell-completions/bash/meson.build

@@ -0,0 +1,15 @@
+bashcompletiondir = get_option('bashcompletiondir')
+if bashcompletiondir == ''
+  bash_completion = dependency('bash-completion', required: false)
+  bashcompletion_defaultdir = get_option('prefix') / get_option('datadir') / 'bash-completion/completions'
+  if bash_completion.found()
+    bashcompletiondir = bash_completion.get_variable(pkgconfig: 'completionsdir', default_value: bashcompletion_defaultdir)
+  else
+    bashcompletiondir = bash_completion_defaultdir
+  endif
+endif
+
+if bashcompletiondir != 'no'
+  install_data('mangohud',    install_dir: bashcompletiondir)
+  install_data('mangohudctl', install_dir: bashcompletiondir)
+endif

meson_options.txt

@@ -2,6 +2,7 @@ option('glibcxx_asserts', type : 'boolean', value : false)
 option('use_system_vulkan', type : 'feature', value : 'disabled', description: 'Use system vulkan headers instead of the provided ones')
 option('use_system_spdlog', type : 'feature', value : 'disabled', description: 'Use system spdlog library')
 option('vulkan_datadir', type : 'string', value : '', description: 'Path to the system vulkan headers data directory if different from MangoHud\'s datadir')
+option('bashcompletiondir', type: 'string', description: 'Directory for bash completion script ["no" disables]')
 option('append_libdir_mangohud', type : 'boolean', value : true, description: 'Append "mangohud" to libdir path or not.')
 option('ld_libdir_prefix', type : 'boolean', value : false, description: 'Set ld libdir to "$prefix/lib/mangohud/\$LIB"')
 option('ld_libdir_abs', type : 'boolean', value : false, description: 'Use absolute path in LD_PRELOAD')
@@ -16,4 +17,4 @@ option('with_dlsym', type : 'feature', value : 'disabled')
 option('loglevel', type: 'combo', choices : ['trace', 'debug', 'info', 'warn', 'err', 'critical', 'off'], value : 'info', description: 'Max log level in non-debug build')
 option('mangoapp', type: 'boolean', value : 'false')
 option('mangohudctl', type: 'boolean', value : 'false')
-option('mangoapp_layer', type: 'boolean', value : 'false')
+option('mangoapp_layer', type: 'boolean', value : 'false')