66 lines
2.0 KiB
Bash
66 lines
2.0 KiB
Bash
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USAGE() { # formatter for USAGE variable
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[ ! $USAGE ] && return 0
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local USAGE_LINE=$(echo $USAGE | grep -i '^[ ]*usage *:' | sed 's/^[ ]*//')
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[ $USAGE__usage ] && echo $USAGE_LINE | grep -q 'usage: -' \
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&& USAGE_LINE=$(echo $USAGE_LINE | sed "s/usage: -/usage: $USAGE__usage/")
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[ $__SCWRYPT ] \
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&& USAGE_LINE=$(
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echo $USAGE_LINE \
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| sed "s;^[^:]*:;& scwrypts $SCWRYPT_NAME --;" \
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| sed 's/ \{2,\}/ /g; s/scwrypts -- scwrypts/scwrypts/' \
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)
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local THE_REST=$(echo $USAGE | grep -vi '^[ ]*usage *:' )
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local DYNAMIC_USAGE_ELEMENT
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#
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# create dynamic usage elements (like 'args') by defining USAGE__<element>
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# then using the syntax "<element>: -" in your USAGE variable
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#
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# e.g.
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#
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# USAGE__args="
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# subcommand arg 1 arg 1 description
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# subcommand arg 2 some other description
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# "
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#
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# USAGE="
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# usage: some-command [...args...]
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#
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# args: -
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# -h, --help some arguments are applicable everywhere
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# "
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#
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for DYNAMIC_USAGE_ELEMENT in $(echo $THE_REST | sed -n 's/^\([^:]*\): -$/\1/p')
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do
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DYNAMIC_USAGE_ELEMENT_TEXT=$(eval echo '$USAGE__'$DYNAMIC_USAGE_ELEMENT)
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#[ $DYNAMIC_USAGE_ELEMENT_TEXT ] || continue
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case $DYNAMIC_USAGE_ELEMENT in
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description )
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DYNAMIC_USAGE_ELEMENT_TEXT=$(echo "$DYNAMIC_USAGE_ELEMENT_TEXT" | perl -p0e 's/^[\n\s]+//')
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DYNAMIC_USAGE_ELEMENT_TEXT="$__YELLOW\\033[03m$DYNAMIC_USAGE_ELEMENT_TEXT\\033[0m"
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;;
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* )
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DYNAMIC_USAGE_ELEMENT_TEXT=$(echo $DYNAMIC_USAGE_ELEMENT_TEXT | sed 's/[^ ]/ &/')
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;;
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esac
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THE_REST=$(echo $THE_REST | perl -pe "s$DYNAMIC_USAGE_ELEMENT: -$DYNAMIC_USAGE_ELEMENT:\n$DYNAMIC_USAGE_ELEMENT_TEXT\n\n")
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done
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# allow for dynamic 'description: -' but delete the 'description:' header line
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THE_REST=$(echo $THE_REST | sed '/^[ ]*description:$/d')
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echo "$__BLUE$USAGE_LINE$__COLOR_RESET\n\n$THE_REST" \
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| sed "s/^\t\+//; s/\s\+$//; s/^\\s*$//;" \
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| sed '/./,$!d; :a; /^\n*$/{$d;N;ba;};' \
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| perl -p0e 's/\n{2,}/\n\n/g' \
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| perl -p0e 's/:\n{2,}/:\n/g' \
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| perl -p0e 's/([a-z]+:)\n([a-z]+:)/\2/g' \
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>&2
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}
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