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simplified command-line argument matching

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Jack
2020-05-02 12:43:09 +03:00
parent 9dfc77f2fd
commit 99b4c73fd8
1 changed files with 27 additions and 27 deletions
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macos-guest-virtualbox.sh
+27 -27
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@@ -2,7 +2,7 @@
# Push-button installer of macOS on VirtualBox
# (c) myspaghetti, licensed under GPL2.0 or higher
# url: https://github.com/myspaghetti/macos-guest-virtualbox
# version 0.90.5
# version 0.90.6
# Dependencies: bash coreutils gzip unzip wget xxd dmg2img
# Supported versions:
@@ -973,22 +973,23 @@ press enter when prompted, less than ten times, to complete the installation.
${highlight_color}USAGE${default_color}
${low_contrast_color}${0} [STAGE]... ${default_color}
The script is divided into stages. Stage titles may be given as command-line
arguments for the script. When the script is run with no command-line
arguments, each of the available stages except \"${low_contrast_color}documentation${default_color}\" and
\"${low_contrast_color}troubleshoot${default_color}\" is performed in succession in the order listed:
The installation is divided into stages. Stage titles may be given as command-
line arguments for the script. When the script is run with no command-line
arguments, each of the stages is performed in succession in the order listed:
${low_contrast_stages}
Either of the stages \"${low_contrast_color}documentation${default_color}\" and \"${low_contrast_color}troubleshoot${default_color}\" is only performed when
it is specified as the first command-line argument, with all subsequent
arguments ignored. When specified after any argument, either of \"${low_contrast_color}documentation${default_color}\"
and \"${low_contrast_color}troubleshoot${default_color}\" is ignored.
Other than the stages above, the command-line arguments \"${low_contrast_color}documentation${default_color}\" and
\"${low_contrast_color}troubleshoot${default_color}\" are available. \"${low_contrast_color}troubleshoot${default_color}\" outputs system information,
VirtualBox logs, and checksums for some installation files. \"${low_contrast_color}documentation${default_color}\"
outputs the script's documentation. If \"${low_contrast_color}documentation${default_color}\" is the first argument,
no other arguments are parsed.
The stage \"${low_contrast_color}check_shell${default_color}\" is always performed when the script loads.
The stages \"${low_contrast_color}check_gnu_coreutils_prefix${default_color}\", \"${low_contrast_color}set_variables${default_color}\", and
\"${low_contrast_color}check_dependencies${default_color}\" are always performed when any stage title other than
\"${low_contrast_color}documentation${default_color}\" or \"${low_contrast_color}troubleshoot${default_color}\" is specified as the first
argument, and the rest of the stages are parsed only after the checks pass.
\"${low_contrast_color}documentation${default_color}\" is specified as the first argument, and the rest of the
specified stages are performed only after the checks pass.
${highlight_color}EXAMPLES${default_color}
${low_contrast_color}${0} configure_vm${default_color}
@@ -1126,6 +1127,7 @@ Further information is available at the following URL:
}
function troubleshoot() {
echo '################################################################################'
head -n 5 "${0}"
echo '################################################################################'
echo 'BASH_VERSION '"${BASH_VERSION}"
@@ -1421,25 +1423,23 @@ stages='
populate_virtual_disks
populate_macos_target
delete_temporary_files
documentation
troubleshoot
'
[[ -z "${1}" ]] && for stage in ${stages}; do ${stage}; done && exit
check_shell
[[ "${1}" = "documentation" ]] && documentation && exit
if [[ "${1}" = "troubleshoot" ]]; then set_variables; check_dependencies >/dev/null; troubleshoot; exit; fi
stages_without_newlines="${stages//[$'\r\n']/ }" # replace newline with space character
stages_without_newlines="${stages_without_newlines//documentation/}" # strip all occurrences of "documentation"
stages_without_newlines="${stages_without_newlines//troubleshoot/}" # strip all occurrences of "troubleshoot"
[[ -z "${1}" ]] && for stage in ${stages_without_newlines}; do ${stage}; done && exit
# every stage name must be preceded and followed by a space character
# for the command-line argument checking below to work
for argument in $@; do
if [[ "${stages_without_newlines}" != *" ${argument} "* ]]; then
echo $'\n'"Can't parse one or more specified arguments. See documentation"
echo "by entering the following command:"
[[ "${1}" == "documentation" ]] && documentation && exit
valid_arguments=(${stages//$'[\r\n]'/ } troubleshoot documentation)
for specified_arg in "$@"; do
there_is_a_match=""
# doing matching the long way to prevent delimiter confusion
for valid_arg in "${valid_arguments[@]}"; do
[[ "${valid_arg}" = "${specified_arg}" ]] && there_is_a_match="true" && break
done
if [[ -z "${there_is_a_match}" ]]; then
echo $'\n'"One or more specified arguments is not recognized."
echo $'\nRecognized stages:\n'"${stages}"
echo $'Other recognized arguments:\n\n documentation\n troubleshoot'
echo $'\n'"View documentation by entering the following command:"
would_you_like_to_know_less
echo $'\n'"Available stages: ${stages}"
exit
fi
done