scripts/library/parse_options.sh

   1 # getopt like parser
   2 parse_options() {
   3         local short_options=$1; shift;
   4         local long_options=$1; shift;
   5         local ret=0;
   6         local unused_options=""
   7         local i
   8
   9         while [[ -n $1 ]]; do
  10                 if [[ ${1:0:2} = '--' ]]; then
  11                         if [[ -n ${1:2} ]]; then
  12                                 local match=""
  13                                 for i in ${long_options//,/ }; do
  14                                         if [[ ${1:2} = ${i//:} ]]; then
  15                                                 match=$i
  16                                                 break
  17                                         fi
  18                                 done
  19                                 if [[ -n $match ]]; then
  20                                         if [[ ${1:2} = $match ]]; then
  21                                                 printf ' %s' "$1"
  22                                         else
  23                                                 if [[ -n $2 ]]; then
  24                                                         printf ' %s' "$1"
  25                                                         shift
  26                                                         printf " '%s'" "$1"
  27                                                 else
  28                                                         printf "@SCRIPTNAME@: $(gettext "option %s requires an argument")" "'$1'" >&2
  29                                                         ret=1
  30                                                 fi
  31                                         fi
  32                                 else
  33                                         echo "@SCRIPTNAME@: $(gettext "unrecognized option") '$1'" >&2
  34                                         ret=1
  35                                 fi
  36                         else
  37                                 shift
  38                                 break
  39                         fi
  40                 elif [[ ${1:0:1} = '-' ]]; then
  41                         for ((i=1; i<${#1}; i++)); do
  42                                 if [[ $short_options =~ ${1:i:1} ]]; then
  43                                         if [[ $short_options =~ ${1:i:1}: ]]; then
  44                                                 if [[ -n ${1:$i+1} ]]; then
  45                                                         printf ' -%s' "${1:i:1}"
  46                                                         printf " '%s'" "${1:$i+1}"
  47                                                 else
  48                                                         if [[ -n $2 ]]; then
  49                                                                 printf ' -%s' "${1:i:1}"
  50                                                                 shift
  51                                                                 printf " '%s'" "${1}"
  52                                                         else
  53                                                                 printf "@SCRIPTNAME@: $(gettext "option %s requires an argument")" "'-${1:i:1}'" >&2
  54                                                                 ret=1
  55                                                         fi
  56                                                 fi
  57                                                 break
  58                                         else
  59                                                 printf ' -%s' "${1:i:1}"
  60                                         fi
  61                                 else
  62                                         echo "@SCRIPTNAME@: $(gettext "unrecognized option") '-${1:i:1}'" >&2
  63                                         ret=1
  64                                 fi
  65                         done
  66                 else
  67                         unused_options="${unused_options} '$1'"
  68                 fi
  69                 shift
  70         done
  71
  72         printf " --"
  73         if [[ -n $unused_options ]]; then
  74                 for i in ${unused_options[@]}; do
  75                         printf ' %s' "$i"
  76                 done
  77         fi
  78         if [[ -n $1 ]]; then
  79                 while [[ -n $1 ]]; do
  80                         printf " '%s'" "${1}"
  81                         shift
  82                 done
  83         fi
  84         printf "\n"
  85
  86         return $ret
  87 }