gsu_complete_options()
{
- local opts="$1" cword="$2" cur
+ local opts="$1" cword="$2" cur opt
local -a words
shift 2
local name= option_type= default_value= required=
local description= help_text=
eval "${gsu_options[$i]}"
- eval val='"$'${gsu_config_var_prefix}_$name'"'
+ eval val='"${'${gsu_config_var_prefix}_$name:-'}"'
case "$required" in
true|yes)
printf "# required"
_gsu_banner_msg()
{
- local txt="### $_gsu_self --"
- if test -z "$gsu_banner_txt"; then
- txt="$txt set \$gsu_banner_txt to customize this message"
- else
- txt="$txt $gsu_banner_txt"
- fi
- gsu_short_msg "$txt ###"
+ gsu_short_msg "### $_gsu_self -- ###"
}
export gsu_help_txt="
Usage: complete [<cword> <word>...]
-In the first form, the command prints all possible completions to stdout.
-This can be used from the completion function of the shell.
+When executed without argument the command writes bash code to
+stdout. This code is suitable to be evaled from .bashrc to enable
+completion.
-Completion code suitable to be evaled is written to stdout if no argument
-was given.
+If at least one argument is given, all possible completions are
+written to stdout. This can be used from the completion function of
+the subcommand.
"
_com_help()
echo "$result"
}
-# Wrapper for bash's getopts.
+# Wrapper for the bash getopts builtin.
#
# Aborts on programming errors such as missing or invalid option string. On
# success $result contains shell code that can be eval'ed. For each defined
# option x, the local variable o_x will be created when calling eval "$result".
-# o_x contains true/false for options without an argument or the emtpy string/the
-# given argument, depending on whether this option was contained in the "$@"
-# array.
+# o_x contains true/false for options without argument and either the emtpy
+# string or the given argument for options that take an argument.
#
# Example:
# gsu_getopts abc:x:y
# eval "$result"
-# [[ $ret -lt 0 ]] && return
+# (($ret < 0)) && return
#
-# [[ "$o_a" = "true ]] && echo "The -a flag was given"
+# [[ "$o_a" = 'true' ]] && echo 'The -a flag was given'
# [[ -n "$o_c" ]] && echo "The -c option was given with arg $o_c"
gsu_getopts()
{
ret=0
}
+# Get the word number on which the cursor is, not counting options.
+#
+# This is useful for completing commands whose possible completions depend
+# on the word number, for example mount.
+#
+# $1: Getopt option string.
+# $2: The current word number.
+# $3..: All words of the current command line.
+#
+# return: If the current word is an option, or a parameter to an option,
+# this function sets $result to -1. Otherwise, the number of the non-option
+# is returned in $result.
+#
+gsu_get_unnamed_arg_num()
+{
+ local opts="$1" cword="$2" prev cur
+ local -i i n=0
+ local -a words
+
+ shift 2
+ words=("$@")
+ cur="${words[$cword]}"
+ prev="${words[$(($cword - 1))]}"
+ result=-1
+ [[ "$cur" == -* ]] && return
+ [[ "$prev" == -* ]] && [[ "$opts" == *${prev#-}:* ]] && return
+
+ for ((i=1; i <= $cword; i++)); do
+ prev="${words[$(($i - 1))]}"
+ cur="${words[$i]}"
+ [[ "$cur" == -* ]] && continue
+ if [[ "$prev" == -* ]]; then
+ opt=${prev#-}
+ [[ "$opts" != *$opt:* ]] && let n++
+ continue
+ fi
+ let n++
+ done
+ result="$(($n - 1))"
+}
+
gsu()
{
local i