ref: d0346f42fdad3ec4f6c6652812829034ac10742d
dir: /contrib/bash_compl/_rgblink.bash/
#!/usr/bin/env bash # Same notes as RGBASM _rgblink_completions() { # Format: "long_opt:state_after" # Empty long opt = it doesn't exit # See the `state` variable below for info about `state_after` declare -A opts=( [V]="version:normal" [d]="dmg:normal" [t]="tiny:normal" [v]="verbose:normal" [w]="wramx:normal" [x]="nopad:normal" [l]="linkerscript:glob-*" [M]="no-sym-in-map:normal" [m]="map:glob-*.map" [n]="sym:glob-*.sym" [O]="overlay:glob-*.gb *.gbc *.sgb" [o]="output:glob-*.gb *.gbc *.sgb" [p]="pad:unk" [s]="smart:unk" ) # Parse command-line up to current word local opt_ena=true # Possible states: # - normal = Well, normal. Options are parsed normally. # - unk = An argument that can't be completed, and should just be skipped. # - warning = A warning flag. # - dir = A directory path # - glob-* = A glob, after the dash is a whitespace-separated list of file globs to use local state=normal # The length of the option, used as a return value by the function below local optlen=0 # $1: a short option word # `state` will be set to the parsing state after the last option character in the word. If # "normal" is not returned, `optlen` will be set to the length (dash included) of the "option" # part of the argument. parse_short_opt() { for (( i = 1; i < "${#1}"; i++ )); do # If the option is not known, assume it doesn't take an argument local opt="${opts["${1:$i:1}"]:-":normal"}" state="${opt#*:}" # If the option takes an argument, record the length and exit if [[ "$state" != 'normal' ]]; then let optlen="$i + 1" return fi done optlen=0 } for (( i = 1; i < COMP_CWORD; i++ )); do local word="${COMP_WORDS[$i]}" # If currently processing an argument, skip this word if [[ "$state" != 'normal' ]]; then state=normal continue fi if [[ "$word" = '--' ]]; then # Options stop being parsed after this opt_ena=false break fi # Check if it's a long option if [[ "$word" = '--'* ]]; then # If the option is unknown, assume it takes no arguments: keep the state at "normal" for long_opt in "${opts[@]}"; do if [[ "$word" = "--${long_opt%%:*}" ]]; then state="${long_opt#*:}" # Check if the next word is just '='; if so, skip it, the argument must follow # (See "known bugs" at the top of this script) let i++ if [[ "${COMP_WORDS[$i]}" != '=' ]]; then let i-- fi optlen=0 break fi done # Check if it's a short option elif [[ "$word" = '-'* ]]; then parse_short_opt "$word" # The last option takes an argument... if [[ "$state" != 'normal' ]]; then if [[ "$optlen" -ne "${#word}" ]]; then # If it's contained within the word, we won't complete it, revert to "normal" state=normal else # Otherwise, complete it, but start at the beginning of *that* word optlen=0 fi fi fi done # Parse current word # Careful that it might look like an option, so use `--` aggressively! local cur_word="${COMP_WORDS[$i]}" # Process options, as short ones may change the state if $opt_ena && [[ "$state" = 'normal' && "$cur_word" = '-'* ]]; then # We might want to complete to an option or an arg to that option # Parse the option word to check # There's no whitespace in the option names, so we can ride a little dirty... # Is this a long option? if [[ "$cur_word" = '--'* ]]; then # It is, try to complete one mapfile -t COMPREPLY < <(compgen -W "${opts[*]%%:*}" -P '--' -- "${cur_word#--}") return 0 else # Short options may be grouped, parse them to determine what to complete parse_short_opt "$cur_word" if [[ "$state" = 'normal' ]]; then mapfile -t COMPREPLY < <(compgen -W "${!opts[*]}" -P "$cur_word" '') return 0 elif [[ "$optlen" = "${#cur_word}" && "$state" != "warning" ]]; then # This short option group only awaits its argument! # Post the option group as-is as a reply so that Readline inserts a space, # so that the next completion request switches to the argument # An exception is made for warnings, since it's idiomatic to stick them to the # `-W`, and it doesn't break anything. COMPREPLY=( "$cur_word" ) return 0 fi fi fi COMPREPLY=() case "$state" in unk) # Return with no replies: no idea what to complete! ;; normal) # Acts like a glob... state="glob-*.o *.obj" ;& glob-*) while read -r word; do COMPREPLY+=("${cur_word:0:$optlen}$word") done < <(for glob in ${state#glob-}; do compgen -A file -X \!"$glob" -- "${cur_word:$optlen}"; done) # Also complete directories ;& dir) while read -r word; do COMPREPLY+=("${cur_word:0:$optlen}$word") done < <(compgen -A directory -- "${cur_word:$optlen}") compopt -o filenames ;; *) echo >&2 "Internal completion error: invalid state \"$state\", please report this bug" return 1 ;; esac } complete -F _rgblink_completions rgblink