kate.ward | f5f46cb | 2013-01-15 00:13:41 +0000 | [diff] [blame] | 1 | # $Id: shflags 189 2013-01-15 00:13:10Z kate.ward@forestent.com $ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 2 | # vim:et:ft=sh:sts=2:sw=2 |
| 3 | # |
| 4 | # Copyright 2008 Kate Ward. All Rights Reserved. |
| 5 | # Released under the LGPL (GNU Lesser General Public License) |
| 6 | # |
| 7 | # shFlags -- Advanced command-line flag library for Unix shell scripts. |
| 8 | # http://code.google.com/p/shflags/ |
| 9 | # |
| 10 | # Author: kate.ward@forestent.com (Kate Ward) |
| 11 | # |
| 12 | # This module implements something like the google-gflags library available |
| 13 | # from http://code.google.com/p/google-gflags/. |
| 14 | # |
| 15 | # FLAG TYPES: This is a list of the DEFINE_*'s that you can do. All flags take |
| 16 | # a name, default value, help-string, and optional 'short' name (one-letter |
| 17 | # name). Some flags have other arguments, which are described with the flag. |
| 18 | # |
| 19 | # DEFINE_string: takes any input, and intreprets it as a string. |
| 20 | # |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 21 | # DEFINE_boolean: does not take any arguments. Say --myflag to set |
| 22 | # FLAGS_myflag to true, or --nomyflag to set FLAGS_myflag to false. For short |
| 23 | # flags, passing the flag on the command-line negates the default value, i.e. |
| 24 | # if the default is true, passing the flag sets the value to false. |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 25 | # |
| 26 | # DEFINE_float: takes an input and intreprets it as a floating point number. As |
| 27 | # shell does not support floats per-se, the input is merely validated as |
| 28 | # being a valid floating point value. |
| 29 | # |
| 30 | # DEFINE_integer: takes an input and intreprets it as an integer. |
| 31 | # |
| 32 | # SPECIAL FLAGS: There are a few flags that have special meaning: |
| 33 | # --help (or -?) prints a list of all the flags in a human-readable fashion |
| 34 | # --flagfile=foo read flags from foo. (not implemented yet) |
| 35 | # -- as in getopt(), terminates flag-processing |
| 36 | # |
| 37 | # EXAMPLE USAGE: |
| 38 | # |
| 39 | # -- begin hello.sh -- |
| 40 | # #! /bin/sh |
| 41 | # . ./shflags |
| 42 | # DEFINE_string name 'world' "somebody's name" n |
| 43 | # FLAGS "$@" || exit $? |
| 44 | # eval set -- "${FLAGS_ARGV}" |
| 45 | # echo "Hello, ${FLAGS_name}." |
| 46 | # -- end hello.sh -- |
| 47 | # |
| 48 | # $ ./hello.sh -n Kate |
| 49 | # Hello, Kate. |
| 50 | # |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 51 | # CUSTOMIZABLE BEHAVIOR: |
| 52 | # |
| 53 | # A script can override the default 'getopt' command by providing the path to |
| 54 | # an alternate implementation by defining the FLAGS_GETOPT_CMD variable. |
| 55 | # |
| 56 | # NOTES: |
| 57 | # |
| 58 | # * Not all systems include a getopt version that supports long flags. On these |
| 59 | # systems, only short flags are recognized. |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 60 | |
| 61 | #============================================================================== |
| 62 | # shFlags |
| 63 | # |
| 64 | # Shared attributes: |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 65 | # flags_error: last error message |
| 66 | # flags_output: last function output (rarely valid) |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 67 | # flags_return: last return value |
| 68 | # |
| 69 | # __flags_longNames: list of long names for all flags |
| 70 | # __flags_shortNames: list of short names for all flags |
| 71 | # __flags_boolNames: list of boolean flag names |
| 72 | # |
| 73 | # __flags_opts: options parsed by getopt |
| 74 | # |
| 75 | # Per-flag attributes: |
| 76 | # FLAGS_<flag_name>: contains value of flag named 'flag_name' |
| 77 | # __flags_<flag_name>_default: the default flag value |
| 78 | # __flags_<flag_name>_help: the flag help string |
| 79 | # __flags_<flag_name>_short: the flag short name |
| 80 | # __flags_<flag_name>_type: the flag type |
| 81 | # |
| 82 | # Notes: |
| 83 | # - lists of strings are space separated, and a null value is the '~' char. |
| 84 | |
| 85 | # return if FLAGS already loaded |
| 86 | [ -n "${FLAGS_VERSION:-}" ] && return 0 |
| 87 | FLAGS_VERSION='1.0.4pre' |
| 88 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 89 | # return values that scripts can use |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 90 | FLAGS_TRUE=0 |
| 91 | FLAGS_FALSE=1 |
| 92 | FLAGS_ERROR=2 |
| 93 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 94 | # determine some reasonable command defaults |
| 95 | __FLAGS_UNAME_S=`uname -s` |
| 96 | case "${__FLAGS_UNAME_S}" in |
| 97 | BSD) __FLAGS_EXPR_CMD='gexpr' ;; |
| 98 | *) __FLAGS_EXPR_CMD='expr' ;; |
| 99 | esac |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 100 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 101 | # commands a user can override if needed |
| 102 | FLAGS_EXPR_CMD=${FLAGS_EXPR_CMD:-${__FLAGS_EXPR_CMD}} |
| 103 | FLAGS_GETOPT_CMD=${FLAGS_GETOPT_CMD:-getopt} |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 104 | |
| 105 | # specific shell checks |
| 106 | if [ -n "${ZSH_VERSION:-}" ]; then |
| 107 | setopt |grep "^shwordsplit$" >/dev/null |
| 108 | if [ $? -ne ${FLAGS_TRUE} ]; then |
| 109 | _flags_fatal 'zsh shwordsplit option is required for proper zsh operation' |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 110 | fi |
| 111 | if [ -z "${FLAGS_PARENT:-}" ]; then |
| 112 | _flags_fatal "zsh does not pass \$0 through properly. please declare' \ |
| 113 | \"FLAGS_PARENT=\$0\" before calling shFlags" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 114 | fi |
| 115 | fi |
| 116 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 117 | # can we use built-ins? |
| 118 | ( echo "${FLAGS_TRUE#0}"; ) >/dev/null 2>&1 |
| 119 | if [ $? -eq ${FLAGS_TRUE} ]; then |
| 120 | __FLAGS_USE_BUILTIN=${FLAGS_TRUE} |
| 121 | else |
| 122 | __FLAGS_USE_BUILTIN=${FLAGS_FALSE} |
| 123 | fi |
| 124 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 125 | # |
| 126 | # constants |
| 127 | # |
| 128 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 129 | # reserved flag names |
| 130 | __FLAGS_RESERVED_LIST=' ARGC ARGV ERROR FALSE GETOPT_CMD HELP PARENT TRUE ' |
| 131 | __FLAGS_RESERVED_LIST="${__FLAGS_RESERVED_LIST} VERSION " |
| 132 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 133 | # getopt version |
| 134 | __FLAGS_GETOPT_VERS_STD=0 |
| 135 | __FLAGS_GETOPT_VERS_ENH=1 |
| 136 | __FLAGS_GETOPT_VERS_BSD=2 |
| 137 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 138 | ${FLAGS_GETOPT_CMD} >/dev/null 2>&1 |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 139 | case $? in |
| 140 | 0) __FLAGS_GETOPT_VERS=${__FLAGS_GETOPT_VERS_STD} ;; # bsd getopt |
| 141 | 2) |
| 142 | # TODO(kward): look into '-T' option to test the internal getopt() version |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 143 | if [ "`${FLAGS_GETOPT_CMD} --version`" = '-- ' ]; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 144 | __FLAGS_GETOPT_VERS=${__FLAGS_GETOPT_VERS_STD} |
| 145 | else |
| 146 | __FLAGS_GETOPT_VERS=${__FLAGS_GETOPT_VERS_ENH} |
| 147 | fi |
| 148 | ;; |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 149 | *) _flags_fatal 'unable to determine getopt version' ;; |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 150 | esac |
| 151 | |
| 152 | # getopt optstring lengths |
| 153 | __FLAGS_OPTSTR_SHORT=0 |
| 154 | __FLAGS_OPTSTR_LONG=1 |
| 155 | |
| 156 | __FLAGS_NULL='~' |
| 157 | |
| 158 | # flag info strings |
| 159 | __FLAGS_INFO_DEFAULT='default' |
| 160 | __FLAGS_INFO_HELP='help' |
| 161 | __FLAGS_INFO_SHORT='short' |
| 162 | __FLAGS_INFO_TYPE='type' |
| 163 | |
| 164 | # flag lengths |
| 165 | __FLAGS_LEN_SHORT=0 |
| 166 | __FLAGS_LEN_LONG=1 |
| 167 | |
| 168 | # flag types |
| 169 | __FLAGS_TYPE_NONE=0 |
| 170 | __FLAGS_TYPE_BOOLEAN=1 |
| 171 | __FLAGS_TYPE_FLOAT=2 |
| 172 | __FLAGS_TYPE_INTEGER=3 |
| 173 | __FLAGS_TYPE_STRING=4 |
| 174 | |
| 175 | # set the constants readonly |
| 176 | __flags_constants=`set |awk -F= '/^FLAGS_/ || /^__FLAGS_/ {print $1}'` |
| 177 | for __flags_const in ${__flags_constants}; do |
| 178 | # skip certain flags |
| 179 | case ${__flags_const} in |
| 180 | FLAGS_HELP) continue ;; |
| 181 | FLAGS_PARENT) continue ;; |
| 182 | esac |
| 183 | # set flag readonly |
| 184 | if [ -z "${ZSH_VERSION:-}" ]; then |
| 185 | readonly ${__flags_const} |
| 186 | else # handle zsh |
| 187 | case ${ZSH_VERSION} in |
| 188 | [123].*) readonly ${__flags_const} ;; |
| 189 | *) readonly -g ${__flags_const} ;; # declare readonly constants globally |
| 190 | esac |
| 191 | fi |
| 192 | done |
| 193 | unset __flags_const __flags_constants |
| 194 | |
| 195 | # |
| 196 | # internal variables |
| 197 | # |
| 198 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 199 | # space separated lists |
| 200 | __flags_boolNames=' ' # boolean flag names |
| 201 | __flags_longNames=' ' # long flag names |
| 202 | __flags_shortNames=' ' # short flag names |
| 203 | __flags_definedNames=' ' # defined flag names (used for validation) |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 204 | |
| 205 | __flags_columns='' # screen width in columns |
| 206 | __flags_opts='' # temporary storage for parsed getopt flags |
| 207 | |
| 208 | #------------------------------------------------------------------------------ |
| 209 | # private functions |
| 210 | # |
| 211 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 212 | # logging functions |
| 213 | _flags_debug() { echo "flags:DEBUG $@" >&2; } |
| 214 | _flags_warn() { echo "flags:WARN $@" >&2; } |
| 215 | _flags_error() { echo "flags:ERROR $@" >&2; } |
| 216 | _flags_fatal() { echo "flags:FATAL $@" >&2; exit ${FLAGS_ERROR}; } |
| 217 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 218 | # Define a flag. |
| 219 | # |
| 220 | # Calling this function will define the following info variables for the |
| 221 | # specified flag: |
| 222 | # FLAGS_flagname - the name for this flag (based upon the long flag name) |
| 223 | # __flags_<flag_name>_default - the default value |
| 224 | # __flags_flagname_help - the help string |
| 225 | # __flags_flagname_short - the single letter alias |
| 226 | # __flags_flagname_type - the type of flag (one of __FLAGS_TYPE_*) |
| 227 | # |
| 228 | # Args: |
| 229 | # _flags__type: integer: internal type of flag (__FLAGS_TYPE_*) |
| 230 | # _flags__name: string: long flag name |
| 231 | # _flags__default: default flag value |
| 232 | # _flags__help: string: help string |
| 233 | # _flags__short: string: (optional) short flag name |
| 234 | # Returns: |
| 235 | # integer: success of operation, or error |
| 236 | _flags_define() |
| 237 | { |
| 238 | if [ $# -lt 4 ]; then |
| 239 | flags_error='DEFINE error: too few arguments' |
| 240 | flags_return=${FLAGS_ERROR} |
| 241 | _flags_error "${flags_error}" |
| 242 | return ${flags_return} |
| 243 | fi |
| 244 | |
| 245 | _flags_type_=$1 |
| 246 | _flags_name_=$2 |
| 247 | _flags_default_=$3 |
| 248 | _flags_help_=$4 |
| 249 | _flags_short_=${5:-${__FLAGS_NULL}} |
| 250 | |
| 251 | _flags_return_=${FLAGS_TRUE} |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 252 | _flags_usName_=`_flags_underscoreName ${_flags_name_}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 253 | |
| 254 | # check whether the flag name is reserved |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 255 | _flags_itemInList ${_flags_usName_} "${__FLAGS_RESERVED_LIST}" |
| 256 | if [ $? -eq ${FLAGS_TRUE} ]; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 257 | flags_error="flag name (${_flags_name_}) is reserved" |
| 258 | _flags_return_=${FLAGS_ERROR} |
| 259 | fi |
| 260 | |
| 261 | # require short option for getopt that don't support long options |
| 262 | if [ ${_flags_return_} -eq ${FLAGS_TRUE} \ |
| 263 | -a ${__FLAGS_GETOPT_VERS} -ne ${__FLAGS_GETOPT_VERS_ENH} \ |
| 264 | -a "${_flags_short_}" = "${__FLAGS_NULL}" ] |
| 265 | then |
| 266 | flags_error="short flag required for (${_flags_name_}) on this platform" |
| 267 | _flags_return_=${FLAGS_ERROR} |
| 268 | fi |
| 269 | |
| 270 | # check for existing long name definition |
| 271 | if [ ${_flags_return_} -eq ${FLAGS_TRUE} ]; then |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 272 | if _flags_itemInList ${_flags_usName_} ${__flags_definedNames}; then |
| 273 | flags_error="definition for ([no]${_flags_name_}) already exists" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 274 | _flags_warn "${flags_error}" |
| 275 | _flags_return_=${FLAGS_FALSE} |
| 276 | fi |
| 277 | fi |
| 278 | |
| 279 | # check for existing short name definition |
| 280 | if [ ${_flags_return_} -eq ${FLAGS_TRUE} \ |
| 281 | -a "${_flags_short_}" != "${__FLAGS_NULL}" ] |
| 282 | then |
| 283 | if _flags_itemInList "${_flags_short_}" ${__flags_shortNames}; then |
| 284 | flags_error="flag short name (${_flags_short_}) already defined" |
| 285 | _flags_warn "${flags_error}" |
| 286 | _flags_return_=${FLAGS_FALSE} |
| 287 | fi |
| 288 | fi |
| 289 | |
| 290 | # handle default value. note, on several occasions the 'if' portion of an |
| 291 | # if/then/else contains just a ':' which does nothing. a binary reversal via |
| 292 | # '!' is not done because it does not work on all shells. |
| 293 | if [ ${_flags_return_} -eq ${FLAGS_TRUE} ]; then |
| 294 | case ${_flags_type_} in |
| 295 | ${__FLAGS_TYPE_BOOLEAN}) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 296 | if _flags_validBool "${_flags_default_}"; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 297 | case ${_flags_default_} in |
| 298 | true|t|0) _flags_default_=${FLAGS_TRUE} ;; |
| 299 | false|f|1) _flags_default_=${FLAGS_FALSE} ;; |
| 300 | esac |
| 301 | else |
| 302 | flags_error="invalid default flag value '${_flags_default_}'" |
| 303 | _flags_return_=${FLAGS_ERROR} |
| 304 | fi |
| 305 | ;; |
| 306 | |
| 307 | ${__FLAGS_TYPE_FLOAT}) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 308 | if _flags_validFloat "${_flags_default_}"; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 309 | : |
| 310 | else |
| 311 | flags_error="invalid default flag value '${_flags_default_}'" |
| 312 | _flags_return_=${FLAGS_ERROR} |
| 313 | fi |
| 314 | ;; |
| 315 | |
| 316 | ${__FLAGS_TYPE_INTEGER}) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 317 | if _flags_validInt "${_flags_default_}"; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 318 | : |
| 319 | else |
| 320 | flags_error="invalid default flag value '${_flags_default_}'" |
| 321 | _flags_return_=${FLAGS_ERROR} |
| 322 | fi |
| 323 | ;; |
| 324 | |
| 325 | ${__FLAGS_TYPE_STRING}) ;; # everything in shell is a valid string |
| 326 | |
| 327 | *) |
| 328 | flags_error="unrecognized flag type '${_flags_type_}'" |
| 329 | _flags_return_=${FLAGS_ERROR} |
| 330 | ;; |
| 331 | esac |
| 332 | fi |
| 333 | |
| 334 | if [ ${_flags_return_} -eq ${FLAGS_TRUE} ]; then |
| 335 | # store flag information |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 336 | eval "FLAGS_${_flags_usName_}='${_flags_default_}'" |
| 337 | eval "__flags_${_flags_usName_}_${__FLAGS_INFO_TYPE}=${_flags_type_}" |
| 338 | eval "__flags_${_flags_usName_}_${__FLAGS_INFO_DEFAULT}=\ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 339 | \"${_flags_default_}\"" |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 340 | eval "__flags_${_flags_usName_}_${__FLAGS_INFO_HELP}=\"${_flags_help_}\"" |
| 341 | eval "__flags_${_flags_usName_}_${__FLAGS_INFO_SHORT}='${_flags_short_}'" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 342 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 343 | # append flag names to name lists |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 344 | __flags_shortNames="${__flags_shortNames}${_flags_short_} " |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 345 | __flags_longNames="${__flags_longNames}${_flags_name_} " |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 346 | [ ${_flags_type_} -eq ${__FLAGS_TYPE_BOOLEAN} ] && \ |
| 347 | __flags_boolNames="${__flags_boolNames}no${_flags_name_} " |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 348 | |
| 349 | # append flag names to defined names for later validation checks |
| 350 | __flags_definedNames="${__flags_definedNames}${_flags_usName_} " |
| 351 | [ ${_flags_type_} -eq ${__FLAGS_TYPE_BOOLEAN} ] && \ |
| 352 | __flags_definedNames="${__flags_definedNames}no${_flags_usName_} " |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 353 | fi |
| 354 | |
| 355 | flags_return=${_flags_return_} |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 356 | unset _flags_default_ _flags_help_ _flags_name_ _flags_return_ \ |
| 357 | _flags_short_ _flags_type_ _flags_usName_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 358 | [ ${flags_return} -eq ${FLAGS_ERROR} ] && _flags_error "${flags_error}" |
| 359 | return ${flags_return} |
| 360 | } |
| 361 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 362 | # Underscore a flag name by replacing dashes with underscores. |
| 363 | # |
| 364 | # Args: |
| 365 | # unnamed: string: log flag name |
| 366 | # Output: |
| 367 | # string: underscored name |
| 368 | _flags_underscoreName() |
| 369 | { |
| 370 | echo $1 |tr '-' '_' |
| 371 | } |
| 372 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 373 | # Return valid getopt options using currently defined list of long options. |
| 374 | # |
| 375 | # This function builds a proper getopt option string for short (and long) |
| 376 | # options, using the current list of long options for reference. |
| 377 | # |
| 378 | # Args: |
| 379 | # _flags_optStr: integer: option string type (__FLAGS_OPTSTR_*) |
| 380 | # Output: |
| 381 | # string: generated option string for getopt |
| 382 | # Returns: |
| 383 | # boolean: success of operation (always returns True) |
| 384 | _flags_genOptStr() |
| 385 | { |
| 386 | _flags_optStrType_=$1 |
| 387 | |
| 388 | _flags_opts_='' |
| 389 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 390 | for _flags_name_ in ${__flags_longNames}; do |
| 391 | _flags_usName_=`_flags_underscoreName ${_flags_name_}` |
| 392 | _flags_type_=`_flags_getFlagInfo ${_flags_usName_} ${__FLAGS_INFO_TYPE}` |
| 393 | [ $? -eq ${FLAGS_TRUE} ] || _flags_fatal 'call to _flags_type_ failed' |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 394 | case ${_flags_optStrType_} in |
| 395 | ${__FLAGS_OPTSTR_SHORT}) |
| 396 | _flags_shortName_=`_flags_getFlagInfo \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 397 | ${_flags_usName_} ${__FLAGS_INFO_SHORT}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 398 | if [ "${_flags_shortName_}" != "${__FLAGS_NULL}" ]; then |
| 399 | _flags_opts_="${_flags_opts_}${_flags_shortName_}" |
| 400 | # getopt needs a trailing ':' to indicate a required argument |
| 401 | [ ${_flags_type_} -ne ${__FLAGS_TYPE_BOOLEAN} ] && \ |
| 402 | _flags_opts_="${_flags_opts_}:" |
| 403 | fi |
| 404 | ;; |
| 405 | |
| 406 | ${__FLAGS_OPTSTR_LONG}) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 407 | _flags_opts_="${_flags_opts_:+${_flags_opts_},}${_flags_name_}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 408 | # getopt needs a trailing ':' to indicate a required argument |
| 409 | [ ${_flags_type_} -ne ${__FLAGS_TYPE_BOOLEAN} ] && \ |
| 410 | _flags_opts_="${_flags_opts_}:" |
| 411 | ;; |
| 412 | esac |
| 413 | done |
| 414 | |
| 415 | echo "${_flags_opts_}" |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 416 | unset _flags_name_ _flags_opts_ _flags_optStrType_ _flags_shortName_ \ |
| 417 | _flags_type_ _flags_usName_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 418 | return ${FLAGS_TRUE} |
| 419 | } |
| 420 | |
| 421 | # Returns flag details based on a flag name and flag info. |
| 422 | # |
| 423 | # Args: |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 424 | # string: underscored flag name |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 425 | # string: flag info (see the _flags_define function for valid info types) |
| 426 | # Output: |
| 427 | # string: value of dereferenced flag variable |
| 428 | # Returns: |
| 429 | # integer: one of FLAGS_{TRUE|FALSE|ERROR} |
| 430 | _flags_getFlagInfo() |
| 431 | { |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 432 | # note: adding gFI to variable names to prevent naming conflicts with calling |
| 433 | # functions |
| 434 | _flags_gFI_usName_=$1 |
| 435 | _flags_gFI_info_=$2 |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 436 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 437 | _flags_infoVar_="__flags_${_flags_gFI_usName_}_${_flags_gFI_info_}" |
| 438 | _flags_strToEval_="_flags_infoValue_=\"\${${_flags_infoVar_}:-}\"" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 439 | eval "${_flags_strToEval_}" |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 440 | if [ -n "${_flags_infoValue_}" ]; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 441 | flags_return=${FLAGS_TRUE} |
| 442 | else |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 443 | # see if the _flags_gFI_usName_ variable is a string as strings can be |
| 444 | # empty... |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 445 | # note: the DRY principle would say to have this function call itself for |
| 446 | # the next three lines, but doing so results in an infinite loop as an |
| 447 | # invalid _flags_name_ will also not have the associated _type variable. |
| 448 | # Because it doesn't (it will evaluate to an empty string) the logic will |
| 449 | # try to find the _type variable of the _type variable, and so on. Not so |
| 450 | # good ;-) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 451 | _flags_typeVar_="__flags_${_flags_gFI_usName_}_${__FLAGS_INFO_TYPE}" |
| 452 | _flags_strToEval_="_flags_typeValue_=\"\${${_flags_typeVar_}:-}\"" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 453 | eval "${_flags_strToEval_}" |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 454 | if [ "${_flags_typeValue_}" = "${__FLAGS_TYPE_STRING}" ]; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 455 | flags_return=${FLAGS_TRUE} |
| 456 | else |
| 457 | flags_return=${FLAGS_ERROR} |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 458 | flags_error="missing flag info variable (${_flags_infoVar_})" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 459 | fi |
| 460 | fi |
| 461 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 462 | echo "${_flags_infoValue_}" |
| 463 | unset _flags_gFI_usName_ _flags_gfI_info_ _flags_infoValue_ _flags_infoVar_ \ |
| 464 | _flags_strToEval_ _flags_typeValue_ _flags_typeVar_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 465 | [ ${flags_return} -eq ${FLAGS_ERROR} ] && _flags_error "${flags_error}" |
| 466 | return ${flags_return} |
| 467 | } |
| 468 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 469 | # Check for presense of item in a list. |
| 470 | # |
| 471 | # Passed a string (e.g. 'abc'), this function will determine if the string is |
| 472 | # present in the list of strings (e.g. ' foo bar abc '). |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 473 | # |
| 474 | # Args: |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 475 | # _flags_str_: string: string to search for in a list of strings |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 476 | # unnamed: list: list of strings |
| 477 | # Returns: |
| 478 | # boolean: true if item is in the list |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 479 | _flags_itemInList() { |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 480 | _flags_str_=$1 |
| 481 | shift |
| 482 | |
| 483 | echo " ${*:-} " |grep " ${_flags_str_} " >/dev/null |
| 484 | if [ $? -eq 0 ]; then |
| 485 | flags_return=${FLAGS_TRUE} |
| 486 | else |
| 487 | flags_return=${FLAGS_FALSE} |
| 488 | fi |
| 489 | |
| 490 | unset _flags_str_ |
| 491 | return ${flags_return} |
| 492 | } |
| 493 | |
| 494 | # Returns the width of the current screen. |
| 495 | # |
| 496 | # Output: |
| 497 | # integer: width in columns of the current screen. |
| 498 | _flags_columns() |
| 499 | { |
| 500 | if [ -z "${__flags_columns}" ]; then |
| 501 | # determine the value and store it |
| 502 | if eval stty size >/dev/null 2>&1; then |
| 503 | # stty size worked :-) |
| 504 | set -- `stty size` |
| 505 | __flags_columns=$2 |
| 506 | elif eval tput cols >/dev/null 2>&1; then |
| 507 | set -- `tput cols` |
| 508 | __flags_columns=$1 |
| 509 | else |
| 510 | __flags_columns=80 # default terminal width |
| 511 | fi |
| 512 | fi |
| 513 | echo ${__flags_columns} |
| 514 | } |
| 515 | |
| 516 | # Validate a boolean. |
| 517 | # |
| 518 | # Args: |
| 519 | # _flags__bool: boolean: value to validate |
| 520 | # Returns: |
| 521 | # bool: true if the value is a valid boolean |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 522 | _flags_validBool() |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 523 | { |
| 524 | _flags_bool_=$1 |
| 525 | |
| 526 | flags_return=${FLAGS_TRUE} |
| 527 | case "${_flags_bool_}" in |
| 528 | true|t|0) ;; |
| 529 | false|f|1) ;; |
| 530 | *) flags_return=${FLAGS_FALSE} ;; |
| 531 | esac |
| 532 | |
| 533 | unset _flags_bool_ |
| 534 | return ${flags_return} |
| 535 | } |
| 536 | |
| 537 | # Validate a float. |
| 538 | # |
| 539 | # Args: |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 540 | # _flags_float_: float: value to validate |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 541 | # Returns: |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 542 | # bool: true if the value is a valid integer |
| 543 | _flags_validFloat() |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 544 | { |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 545 | flags_return=${FLAGS_FALSE} |
| 546 | [ -n "$1" ] || return ${flags_return} |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 547 | _flags_float_=$1 |
| 548 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 549 | if _flags_validInt ${_flags_float_}; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 550 | flags_return=${FLAGS_TRUE} |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 551 | elif _flags_useBuiltin; then |
| 552 | _flags_float_whole_=${_flags_float_%.*} |
| 553 | _flags_float_fraction_=${_flags_float_#*.} |
| 554 | if _flags_validInt ${_flags_float_whole_:-0} -a \ |
| 555 | _flags_validInt ${_flags_float_fraction_}; then |
| 556 | flags_return=${FLAGS_TRUE} |
| 557 | fi |
| 558 | unset _flags_float_whole_ _flags_float_fraction_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 559 | else |
| 560 | flags_return=${FLAGS_TRUE} |
| 561 | case ${_flags_float_} in |
| 562 | -*) # negative floats |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 563 | _flags_test_=`${FLAGS_EXPR_CMD} -- "${_flags_float_}" :\ |
| 564 | '\(-[0-9]*\.[0-9]*\)'` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 565 | ;; |
| 566 | *) # positive floats |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 567 | _flags_test_=`${FLAGS_EXPR_CMD} -- "${_flags_float_}" :\ |
| 568 | '\([0-9]*\.[0-9]*\)'` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 569 | ;; |
| 570 | esac |
| 571 | [ "${_flags_test_}" != "${_flags_float_}" ] && flags_return=${FLAGS_FALSE} |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 572 | unset _flags_test_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 573 | fi |
| 574 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 575 | unset _flags_float_ _flags_float_whole_ _flags_float_fraction_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 576 | return ${flags_return} |
| 577 | } |
| 578 | |
| 579 | # Validate an integer. |
| 580 | # |
| 581 | # Args: |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 582 | # _flags_int_: integer: value to validate |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 583 | # Returns: |
| 584 | # bool: true if the value is a valid integer |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 585 | _flags_validInt() |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 586 | { |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 587 | flags_return=${FLAGS_FALSE} |
| 588 | [ -n "$1" ] || return ${flags_return} |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 589 | _flags_int_=$1 |
| 590 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 591 | case ${_flags_int_} in |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 592 | -*.*) ;; # ignore negative floats (we'll invalidate them later) |
| 593 | -*) # strip possible leading negative sign |
| 594 | if _flags_useBuiltin; then |
| 595 | _flags_int_=${_flags_int_#-} |
| 596 | else |
| 597 | _flags_int_=`${FLAGS_EXPR_CMD} -- "${_flags_int_}" : '-\([0-9][0-9]*\)'` |
| 598 | fi |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 599 | ;; |
| 600 | esac |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 601 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 602 | case ${_flags_int_} in |
| 603 | *[!0-9]*) flags_return=${FLAGS_FALSE} ;; |
| 604 | *) flags_return=${FLAGS_TRUE} ;; |
| 605 | esac |
| 606 | |
| 607 | unset _flags_int_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 608 | return ${flags_return} |
| 609 | } |
| 610 | |
| 611 | # Parse command-line options using the standard getopt. |
| 612 | # |
| 613 | # Note: the flag options are passed around in the global __flags_opts so that |
| 614 | # the formatting is not lost due to shell parsing and such. |
| 615 | # |
| 616 | # Args: |
| 617 | # @: varies: command-line options to parse |
| 618 | # Returns: |
| 619 | # integer: a FLAGS success condition |
| 620 | _flags_getoptStandard() |
| 621 | { |
| 622 | flags_return=${FLAGS_TRUE} |
| 623 | _flags_shortOpts_=`_flags_genOptStr ${__FLAGS_OPTSTR_SHORT}` |
| 624 | |
| 625 | # check for spaces in passed options |
| 626 | for _flags_opt_ in "$@"; do |
| 627 | # note: the silliness with the x's is purely for ksh93 on Ubuntu 6.06 |
| 628 | _flags_match_=`echo "x${_flags_opt_}x" |sed 's/ //g'` |
| 629 | if [ "${_flags_match_}" != "x${_flags_opt_}x" ]; then |
| 630 | flags_error='the available getopt does not support spaces in options' |
| 631 | flags_return=${FLAGS_ERROR} |
| 632 | break |
| 633 | fi |
| 634 | done |
| 635 | |
| 636 | if [ ${flags_return} -eq ${FLAGS_TRUE} ]; then |
| 637 | __flags_opts=`getopt ${_flags_shortOpts_} $@ 2>&1` |
| 638 | _flags_rtrn_=$? |
| 639 | if [ ${_flags_rtrn_} -ne ${FLAGS_TRUE} ]; then |
| 640 | _flags_warn "${__flags_opts}" |
| 641 | flags_error='unable to parse provided options with getopt.' |
| 642 | flags_return=${FLAGS_ERROR} |
| 643 | fi |
| 644 | fi |
| 645 | |
| 646 | unset _flags_match_ _flags_opt_ _flags_rtrn_ _flags_shortOpts_ |
| 647 | return ${flags_return} |
| 648 | } |
| 649 | |
| 650 | # Parse command-line options using the enhanced getopt. |
| 651 | # |
| 652 | # Note: the flag options are passed around in the global __flags_opts so that |
| 653 | # the formatting is not lost due to shell parsing and such. |
| 654 | # |
| 655 | # Args: |
| 656 | # @: varies: command-line options to parse |
| 657 | # Returns: |
| 658 | # integer: a FLAGS success condition |
| 659 | _flags_getoptEnhanced() |
| 660 | { |
| 661 | flags_return=${FLAGS_TRUE} |
| 662 | _flags_shortOpts_=`_flags_genOptStr ${__FLAGS_OPTSTR_SHORT}` |
| 663 | _flags_boolOpts_=`echo "${__flags_boolNames}" \ |
| 664 | |sed 's/^ *//;s/ *$//;s/ /,/g'` |
| 665 | _flags_longOpts_=`_flags_genOptStr ${__FLAGS_OPTSTR_LONG}` |
| 666 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 667 | __flags_opts=`${FLAGS_GETOPT_CMD} \ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 668 | -o ${_flags_shortOpts_} \ |
| 669 | -l "${_flags_longOpts_},${_flags_boolOpts_}" \ |
| 670 | -- "$@" 2>&1` |
| 671 | _flags_rtrn_=$? |
| 672 | if [ ${_flags_rtrn_} -ne ${FLAGS_TRUE} ]; then |
| 673 | _flags_warn "${__flags_opts}" |
| 674 | flags_error='unable to parse provided options with getopt.' |
| 675 | flags_return=${FLAGS_ERROR} |
| 676 | fi |
| 677 | |
| 678 | unset _flags_boolOpts_ _flags_longOpts_ _flags_rtrn_ _flags_shortOpts_ |
| 679 | return ${flags_return} |
| 680 | } |
| 681 | |
| 682 | # Dynamically parse a getopt result and set appropriate variables. |
| 683 | # |
| 684 | # This function does the actual conversion of getopt output and runs it through |
| 685 | # the standard case structure for parsing. The case structure is actually quite |
| 686 | # dynamic to support any number of flags. |
| 687 | # |
| 688 | # Args: |
| 689 | # argc: int: original command-line argument count |
| 690 | # @: varies: output from getopt parsing |
| 691 | # Returns: |
| 692 | # integer: a FLAGS success condition |
| 693 | _flags_parseGetopt() |
| 694 | { |
| 695 | _flags_argc_=$1 |
| 696 | shift |
| 697 | |
| 698 | flags_return=${FLAGS_TRUE} |
| 699 | |
| 700 | if [ ${__FLAGS_GETOPT_VERS} -ne ${__FLAGS_GETOPT_VERS_ENH} ]; then |
| 701 | set -- $@ |
| 702 | else |
| 703 | # note the quotes around the `$@' -- they are essential! |
| 704 | eval set -- "$@" |
| 705 | fi |
| 706 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 707 | # Provide user with the number of arguments to shift by later. |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 708 | # NOTE: the FLAGS_ARGC variable is obsolete as of 1.0.3 because it does not |
| 709 | # properly give user access to non-flag arguments mixed in between flag |
| 710 | # arguments. Its usage was replaced by FLAGS_ARGV, and it is being kept only |
| 711 | # for backwards compatibility reasons. |
kate.ward | f5f46cb | 2013-01-15 00:13:41 +0000 | [diff] [blame] | 712 | FLAGS_ARGC=`_flags_math "$# - 1 - ${_flags_argc_}"` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 713 | |
| 714 | # handle options. note options with values must do an additional shift |
| 715 | while true; do |
| 716 | _flags_opt_=$1 |
| 717 | _flags_arg_=${2:-} |
| 718 | _flags_type_=${__FLAGS_TYPE_NONE} |
| 719 | _flags_name_='' |
| 720 | |
| 721 | # determine long flag name |
| 722 | case "${_flags_opt_}" in |
| 723 | --) shift; break ;; # discontinue option parsing |
| 724 | |
| 725 | --*) # long option |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 726 | if _flags_useBuiltin; then |
| 727 | _flags_opt_=${_flags_opt_#*--} |
| 728 | else |
| 729 | _flags_opt_=`${FLAGS_EXPR_CMD} -- "${_flags_opt_}" : '--\(.*\)'` |
| 730 | fi |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 731 | _flags_len_=${__FLAGS_LEN_LONG} |
| 732 | if _flags_itemInList "${_flags_opt_}" ${__flags_longNames}; then |
| 733 | _flags_name_=${_flags_opt_} |
| 734 | else |
| 735 | # check for negated long boolean version |
| 736 | if _flags_itemInList "${_flags_opt_}" ${__flags_boolNames}; then |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 737 | if _flags_useBuiltin; then |
| 738 | _flags_name_=${_flags_opt_#*no} |
| 739 | else |
| 740 | _flags_name_=`${FLAGS_EXPR_CMD} -- "${_flags_opt_}" : 'no\(.*\)'` |
| 741 | fi |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 742 | _flags_type_=${__FLAGS_TYPE_BOOLEAN} |
| 743 | _flags_arg_=${__FLAGS_NULL} |
| 744 | fi |
| 745 | fi |
| 746 | ;; |
| 747 | |
| 748 | -*) # short option |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 749 | if _flags_useBuiltin; then |
| 750 | _flags_opt_=${_flags_opt_#*-} |
| 751 | else |
| 752 | _flags_opt_=`${FLAGS_EXPR_CMD} -- "${_flags_opt_}" : '-\(.*\)'` |
| 753 | fi |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 754 | _flags_len_=${__FLAGS_LEN_SHORT} |
| 755 | if _flags_itemInList "${_flags_opt_}" ${__flags_shortNames}; then |
| 756 | # yes. match short name to long name. note purposeful off-by-one |
| 757 | # (too high) with awk calculations. |
| 758 | _flags_pos_=`echo "${__flags_shortNames}" \ |
| 759 | |awk 'BEGIN{RS=" ";rn=0}$0==e{rn=NR}END{print rn}' \ |
| 760 | e=${_flags_opt_}` |
| 761 | _flags_name_=`echo "${__flags_longNames}" \ |
| 762 | |awk 'BEGIN{RS=" "}rn==NR{print $0}' rn="${_flags_pos_}"` |
| 763 | fi |
| 764 | ;; |
| 765 | esac |
| 766 | |
| 767 | # die if the flag was unrecognized |
| 768 | if [ -z "${_flags_name_}" ]; then |
| 769 | flags_error="unrecognized option (${_flags_opt_})" |
| 770 | flags_return=${FLAGS_ERROR} |
| 771 | break |
| 772 | fi |
| 773 | |
| 774 | # set new flag value |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 775 | _flags_usName_=`_flags_underscoreName ${_flags_name_}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 776 | [ ${_flags_type_} -eq ${__FLAGS_TYPE_NONE} ] && \ |
| 777 | _flags_type_=`_flags_getFlagInfo \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 778 | "${_flags_usName_}" ${__FLAGS_INFO_TYPE}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 779 | case ${_flags_type_} in |
| 780 | ${__FLAGS_TYPE_BOOLEAN}) |
| 781 | if [ ${_flags_len_} -eq ${__FLAGS_LEN_LONG} ]; then |
| 782 | if [ "${_flags_arg_}" != "${__FLAGS_NULL}" ]; then |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 783 | eval "FLAGS_${_flags_usName_}=${FLAGS_TRUE}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 784 | else |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 785 | eval "FLAGS_${_flags_usName_}=${FLAGS_FALSE}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 786 | fi |
| 787 | else |
| 788 | _flags_strToEval_="_flags_val_=\ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 789 | \${__flags_${_flags_usName_}_${__FLAGS_INFO_DEFAULT}}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 790 | eval "${_flags_strToEval_}" |
| 791 | if [ ${_flags_val_} -eq ${FLAGS_FALSE} ]; then |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 792 | eval "FLAGS_${_flags_usName_}=${FLAGS_TRUE}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 793 | else |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 794 | eval "FLAGS_${_flags_usName_}=${FLAGS_FALSE}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 795 | fi |
| 796 | fi |
| 797 | ;; |
| 798 | |
| 799 | ${__FLAGS_TYPE_FLOAT}) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 800 | if _flags_validFloat "${_flags_arg_}"; then |
| 801 | eval "FLAGS_${_flags_usName_}='${_flags_arg_}'" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 802 | else |
| 803 | flags_error="invalid float value (${_flags_arg_})" |
| 804 | flags_return=${FLAGS_ERROR} |
| 805 | break |
| 806 | fi |
| 807 | ;; |
| 808 | |
| 809 | ${__FLAGS_TYPE_INTEGER}) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 810 | if _flags_validInt "${_flags_arg_}"; then |
| 811 | eval "FLAGS_${_flags_usName_}='${_flags_arg_}'" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 812 | else |
| 813 | flags_error="invalid integer value (${_flags_arg_})" |
| 814 | flags_return=${FLAGS_ERROR} |
| 815 | break |
| 816 | fi |
| 817 | ;; |
| 818 | |
| 819 | ${__FLAGS_TYPE_STRING}) |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 820 | eval "FLAGS_${_flags_usName_}='${_flags_arg_}'" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 821 | ;; |
| 822 | esac |
| 823 | |
| 824 | # handle special case help flag |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 825 | if [ "${_flags_usName_}" = 'help' ]; then |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 826 | if [ ${FLAGS_help} -eq ${FLAGS_TRUE} ]; then |
| 827 | flags_help |
| 828 | flags_error='help requested' |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 829 | flags_return=${FLAGS_TRUE} |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 830 | break |
| 831 | fi |
| 832 | fi |
| 833 | |
| 834 | # shift the option and non-boolean arguements out. |
| 835 | shift |
| 836 | [ ${_flags_type_} != ${__FLAGS_TYPE_BOOLEAN} ] && shift |
| 837 | done |
| 838 | |
| 839 | # give user back non-flag arguments |
| 840 | FLAGS_ARGV='' |
| 841 | while [ $# -gt 0 ]; do |
| 842 | FLAGS_ARGV="${FLAGS_ARGV:+${FLAGS_ARGV} }'$1'" |
| 843 | shift |
| 844 | done |
| 845 | |
| 846 | unset _flags_arg_ _flags_len_ _flags_name_ _flags_opt_ _flags_pos_ \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 847 | _flags_strToEval_ _flags_type_ _flags_usName_ _flags_val_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 848 | return ${flags_return} |
| 849 | } |
| 850 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 851 | # Perform some path using built-ins. |
| 852 | # |
| 853 | # Args: |
| 854 | # $@: string: math expression to evaluate |
| 855 | # Output: |
| 856 | # integer: the result |
| 857 | # Returns: |
| 858 | # bool: success of math evaluation |
| 859 | _flags_math() |
| 860 | { |
| 861 | if [ $# -eq 0 ]; then |
| 862 | flags_return=${FLAGS_FALSE} |
| 863 | elif _flags_useBuiltin; then |
| 864 | # Variable assignment is needed as workaround for Solaris Bourne shell, |
| 865 | # which cannot parse a bare $((expression)). |
| 866 | _flags_expr_='$(($@))' |
| 867 | eval echo ${_flags_expr_} |
| 868 | flags_return=$? |
| 869 | unset _flags_expr_ |
| 870 | else |
| 871 | eval expr $@ |
| 872 | flags_return=$? |
| 873 | fi |
| 874 | |
| 875 | return ${flags_return} |
| 876 | } |
| 877 | |
| 878 | # Cross-platform strlen() implementation. |
| 879 | # |
| 880 | # Args: |
| 881 | # _flags_str: string: to determine length of |
| 882 | # Output: |
| 883 | # integer: length of string |
| 884 | # Returns: |
| 885 | # bool: success of strlen evaluation |
| 886 | _flags_strlen() |
| 887 | { |
| 888 | _flags_str_=${1:-} |
| 889 | |
| 890 | if [ -z "${_flags_str_}" ]; then |
| 891 | flags_output=0 |
| 892 | elif _flags_useBuiltin; then |
| 893 | flags_output=${#_flags_str_} |
| 894 | else |
| 895 | flags_output=`${FLAGS_EXPR_CMD} -- "${_flags_str_}" : '.*'` |
| 896 | fi |
| 897 | flags_return=$? |
| 898 | |
| 899 | unset _flags_str_ |
| 900 | echo ${flags_output} |
| 901 | return ${flags_return} |
| 902 | } |
| 903 | |
| 904 | # Use built-in helper function to enable unit testing. |
| 905 | # |
| 906 | # Args: |
| 907 | # None |
| 908 | # Returns: |
| 909 | # bool: true if built-ins should be used |
| 910 | _flags_useBuiltin() |
| 911 | { |
| 912 | return ${__FLAGS_USE_BUILTIN} |
| 913 | } |
| 914 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 915 | #------------------------------------------------------------------------------ |
| 916 | # public functions |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 917 | # |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 918 | # A basic boolean flag. Boolean flags do not take any arguments, and their |
| 919 | # value is either 1 (false) or 0 (true). For long flags, the false value is |
| 920 | # specified on the command line by prepending the word 'no'. With short flags, |
| 921 | # the presense of the flag toggles the current value between true and false. |
| 922 | # Specifying a short boolean flag twice on the command results in returning the |
| 923 | # value back to the default value. |
| 924 | # |
| 925 | # A default value is required for boolean flags. |
| 926 | # |
| 927 | # For example, lets say a Boolean flag was created whose long name was 'update' |
| 928 | # and whose short name was 'x', and the default value was 'false'. This flag |
| 929 | # could be explicitly set to 'true' with '--update' or by '-x', and it could be |
| 930 | # explicitly set to 'false' with '--noupdate'. |
| 931 | DEFINE_boolean() { _flags_define ${__FLAGS_TYPE_BOOLEAN} "$@"; } |
| 932 | |
| 933 | # Other basic flags. |
| 934 | DEFINE_float() { _flags_define ${__FLAGS_TYPE_FLOAT} "$@"; } |
| 935 | DEFINE_integer() { _flags_define ${__FLAGS_TYPE_INTEGER} "$@"; } |
| 936 | DEFINE_string() { _flags_define ${__FLAGS_TYPE_STRING} "$@"; } |
| 937 | |
| 938 | # Parse the flags. |
| 939 | # |
| 940 | # Args: |
| 941 | # unnamed: list: command-line flags to parse |
| 942 | # Returns: |
| 943 | # integer: success of operation, or error |
| 944 | FLAGS() |
| 945 | { |
| 946 | # define a standard 'help' flag if one isn't already defined |
| 947 | [ -z "${__flags_help_type:-}" ] && \ |
| 948 | DEFINE_boolean 'help' false 'show this help' 'h' |
| 949 | |
| 950 | # parse options |
| 951 | if [ $# -gt 0 ]; then |
| 952 | if [ ${__FLAGS_GETOPT_VERS} -ne ${__FLAGS_GETOPT_VERS_ENH} ]; then |
| 953 | _flags_getoptStandard "$@" |
| 954 | else |
| 955 | _flags_getoptEnhanced "$@" |
| 956 | fi |
| 957 | flags_return=$? |
| 958 | else |
| 959 | # nothing passed; won't bother running getopt |
| 960 | __flags_opts='--' |
| 961 | flags_return=${FLAGS_TRUE} |
| 962 | fi |
| 963 | |
| 964 | if [ ${flags_return} -eq ${FLAGS_TRUE} ]; then |
| 965 | _flags_parseGetopt $# "${__flags_opts}" |
| 966 | flags_return=$? |
| 967 | fi |
| 968 | |
| 969 | [ ${flags_return} -eq ${FLAGS_ERROR} ] && _flags_fatal "${flags_error}" |
| 970 | return ${flags_return} |
| 971 | } |
| 972 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 973 | # This is a helper function for determining the 'getopt' version for platforms |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 974 | # where the detection isn't working. It simply outputs debug information that |
| 975 | # can be included in a bug report. |
| 976 | # |
| 977 | # Args: |
| 978 | # none |
| 979 | # Output: |
| 980 | # debug info that can be included in a bug report |
| 981 | # Returns: |
| 982 | # nothing |
| 983 | flags_getoptInfo() |
| 984 | { |
| 985 | # platform info |
| 986 | _flags_debug "uname -a: `uname -a`" |
| 987 | _flags_debug "PATH: ${PATH}" |
| 988 | |
| 989 | # shell info |
| 990 | if [ -n "${BASH_VERSION:-}" ]; then |
| 991 | _flags_debug 'shell: bash' |
| 992 | _flags_debug "BASH_VERSION: ${BASH_VERSION}" |
| 993 | elif [ -n "${ZSH_VERSION:-}" ]; then |
| 994 | _flags_debug 'shell: zsh' |
| 995 | _flags_debug "ZSH_VERSION: ${ZSH_VERSION}" |
| 996 | fi |
| 997 | |
| 998 | # getopt info |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 999 | ${FLAGS_GETOPT_CMD} >/dev/null |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1000 | _flags_getoptReturn=$? |
| 1001 | _flags_debug "getopt return: ${_flags_getoptReturn}" |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1002 | _flags_debug "getopt --version: `${FLAGS_GETOPT_CMD} --version 2>&1`" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1003 | |
| 1004 | unset _flags_getoptReturn |
| 1005 | } |
| 1006 | |
| 1007 | # Returns whether the detected getopt version is the enhanced version. |
| 1008 | # |
| 1009 | # Args: |
| 1010 | # none |
| 1011 | # Output: |
| 1012 | # none |
| 1013 | # Returns: |
| 1014 | # bool: true if getopt is the enhanced version |
| 1015 | flags_getoptIsEnh() |
| 1016 | { |
| 1017 | test ${__FLAGS_GETOPT_VERS} -eq ${__FLAGS_GETOPT_VERS_ENH} |
| 1018 | } |
| 1019 | |
| 1020 | # Returns whether the detected getopt version is the standard version. |
| 1021 | # |
| 1022 | # Args: |
| 1023 | # none |
| 1024 | # Returns: |
| 1025 | # bool: true if getopt is the standard version |
| 1026 | flags_getoptIsStd() |
| 1027 | { |
| 1028 | test ${__FLAGS_GETOPT_VERS} -eq ${__FLAGS_GETOPT_VERS_STD} |
| 1029 | } |
| 1030 | |
| 1031 | # This is effectively a 'usage()' function. It prints usage information and |
| 1032 | # exits the program with ${FLAGS_FALSE} if it is ever found in the command line |
| 1033 | # arguments. Note this function can be overridden so other apps can define |
| 1034 | # their own --help flag, replacing this one, if they want. |
| 1035 | # |
| 1036 | # Args: |
| 1037 | # none |
| 1038 | # Returns: |
| 1039 | # integer: success of operation (always returns true) |
| 1040 | flags_help() |
| 1041 | { |
| 1042 | if [ -n "${FLAGS_HELP:-}" ]; then |
| 1043 | echo "${FLAGS_HELP}" >&2 |
| 1044 | else |
| 1045 | echo "USAGE: ${FLAGS_PARENT:-$0} [flags] args" >&2 |
| 1046 | fi |
| 1047 | if [ -n "${__flags_longNames}" ]; then |
| 1048 | echo 'flags:' >&2 |
| 1049 | for flags_name_ in ${__flags_longNames}; do |
| 1050 | flags_flagStr_='' |
| 1051 | flags_boolStr_='' |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1052 | flags_usName_=`_flags_underscoreName ${flags_name_}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1053 | |
| 1054 | flags_default_=`_flags_getFlagInfo \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1055 | "${flags_usName_}" ${__FLAGS_INFO_DEFAULT}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1056 | flags_help_=`_flags_getFlagInfo \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1057 | "${flags_usName_}" ${__FLAGS_INFO_HELP}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1058 | flags_short_=`_flags_getFlagInfo \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1059 | "${flags_usName_}" ${__FLAGS_INFO_SHORT}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1060 | flags_type_=`_flags_getFlagInfo \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1061 | "${flags_usName_}" ${__FLAGS_INFO_TYPE}` |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1062 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1063 | [ "${flags_short_}" != "${__FLAGS_NULL}" ] && \ |
| 1064 | flags_flagStr_="-${flags_short_}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1065 | |
| 1066 | if [ ${__FLAGS_GETOPT_VERS} -eq ${__FLAGS_GETOPT_VERS_ENH} ]; then |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1067 | [ "${flags_short_}" != "${__FLAGS_NULL}" ] && \ |
| 1068 | flags_flagStr_="${flags_flagStr_}," |
| 1069 | # add [no] to long boolean flag names, except the 'help' flag |
| 1070 | [ ${flags_type_} -eq ${__FLAGS_TYPE_BOOLEAN} \ |
| 1071 | -a "${flags_usName_}" != 'help' ] && \ |
| 1072 | flags_boolStr_='[no]' |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1073 | flags_flagStr_="${flags_flagStr_}--${flags_boolStr_}${flags_name_}:" |
| 1074 | fi |
| 1075 | |
| 1076 | case ${flags_type_} in |
| 1077 | ${__FLAGS_TYPE_BOOLEAN}) |
| 1078 | if [ ${flags_default_} -eq ${FLAGS_TRUE} ]; then |
| 1079 | flags_defaultStr_='true' |
| 1080 | else |
| 1081 | flags_defaultStr_='false' |
| 1082 | fi |
| 1083 | ;; |
| 1084 | ${__FLAGS_TYPE_FLOAT}|${__FLAGS_TYPE_INTEGER}) |
| 1085 | flags_defaultStr_=${flags_default_} ;; |
| 1086 | ${__FLAGS_TYPE_STRING}) flags_defaultStr_="'${flags_default_}'" ;; |
| 1087 | esac |
| 1088 | flags_defaultStr_="(default: ${flags_defaultStr_})" |
| 1089 | |
| 1090 | flags_helpStr_=" ${flags_flagStr_} ${flags_help_} ${flags_defaultStr_}" |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1091 | _flags_strlen "${flags_helpStr_}" >/dev/null |
| 1092 | flags_helpStrLen_=${flags_output} |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1093 | flags_columns_=`_flags_columns` |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1094 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1095 | if [ ${flags_helpStrLen_} -lt ${flags_columns_} ]; then |
| 1096 | echo "${flags_helpStr_}" >&2 |
| 1097 | else |
| 1098 | echo " ${flags_flagStr_} ${flags_help_}" >&2 |
| 1099 | # note: the silliness with the x's is purely for ksh93 on Ubuntu 6.06 |
| 1100 | # because it doesn't like empty strings when used in this manner. |
| 1101 | flags_emptyStr_="`echo \"x${flags_flagStr_}x\" \ |
| 1102 | |awk '{printf "%"length($0)-2"s", ""}'`" |
| 1103 | flags_helpStr_=" ${flags_emptyStr_} ${flags_defaultStr_}" |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1104 | _flags_strlen "${flags_helpStr_}" >/dev/null |
| 1105 | flags_helpStrLen_=${flags_output} |
| 1106 | |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1107 | if [ ${__FLAGS_GETOPT_VERS} -eq ${__FLAGS_GETOPT_VERS_STD} \ |
| 1108 | -o ${flags_helpStrLen_} -lt ${flags_columns_} ]; then |
| 1109 | # indented to match help string |
| 1110 | echo "${flags_helpStr_}" >&2 |
| 1111 | else |
| 1112 | # indented four from left to allow for longer defaults as long flag |
| 1113 | # names might be used too, making things too long |
| 1114 | echo " ${flags_defaultStr_}" >&2 |
| 1115 | fi |
| 1116 | fi |
| 1117 | done |
| 1118 | fi |
| 1119 | |
| 1120 | unset flags_boolStr_ flags_default_ flags_defaultStr_ flags_emptyStr_ \ |
| 1121 | flags_flagStr_ flags_help_ flags_helpStr flags_helpStrLen flags_name_ \ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1122 | flags_columns_ flags_short_ flags_type_ flags_usName_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1123 | return ${FLAGS_TRUE} |
| 1124 | } |
| 1125 | |
| 1126 | # Reset shflags back to an uninitialized state. |
| 1127 | # |
| 1128 | # Args: |
| 1129 | # none |
| 1130 | # Returns: |
| 1131 | # nothing |
| 1132 | flags_reset() |
| 1133 | { |
| 1134 | for flags_name_ in ${__flags_longNames}; do |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1135 | flags_usName_=`_flags_underscoreName ${flags_name_}` |
| 1136 | flags_strToEval_="unset FLAGS_${flags_usName_}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1137 | for flags_type_ in \ |
| 1138 | ${__FLAGS_INFO_DEFAULT} \ |
| 1139 | ${__FLAGS_INFO_HELP} \ |
| 1140 | ${__FLAGS_INFO_SHORT} \ |
| 1141 | ${__FLAGS_INFO_TYPE} |
| 1142 | do |
| 1143 | flags_strToEval_=\ |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1144 | "${flags_strToEval_} __flags_${flags_usName_}_${flags_type_}" |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1145 | done |
| 1146 | eval ${flags_strToEval_} |
| 1147 | done |
| 1148 | |
| 1149 | # reset internal variables |
| 1150 | __flags_boolNames=' ' |
| 1151 | __flags_longNames=' ' |
| 1152 | __flags_shortNames=' ' |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1153 | __flags_definedNames=' ' |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1154 | |
kate.ward | 22eaa84 | 2013-01-15 00:01:35 +0000 | [diff] [blame] | 1155 | unset flags_name_ flags_type_ flags_strToEval_ flags_usName_ |
kate.ward | 93203d9 | 2010-03-28 23:11:33 +0000 | [diff] [blame] | 1156 | } |