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77 lines
1.7 KiB
77 lines
1.7 KiB
#!/bin/sh
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set -e
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# Helper functions for programs that work with satellite files.
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show_help() {
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echo "Script with helper functions for working with satellite files.
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Usage: $0 <satellite file> <function> [arguments]
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Functions:
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variable <name> | Get variable set in the header
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downloads | Get all download urls
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options | List all available options and their descriptions"
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}
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if [ $# -lt 2 ]; then
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show_help
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exit 1
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fi
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satellite="$(realpath "$1")"
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function="$2"
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# Functions reused in all wrappers
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global="$(printf '
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download_only=true
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import() {
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. "%s/functions/$1.sh"
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}
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# Allowed external utility commands
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cut() { "%s" "$@"; }
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expr() { "%s" "$@"; }
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' "$(dirname "$satellite")" "$(command -v cut)" "$(command -v expr)")"
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if [ "$function" = "variable" ]; then
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name="$3"
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if [ ! "$name" ]; then
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show_help
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exit 1
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fi
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printf "$global"'
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header_end() {
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variable="$%s"
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[ "$variable" ] && echo "$variable"
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exit $?
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}
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. %s
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' "$name" "$satellite" | PATH= /bin/sh 2> /dev/null
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elif [ "$function" = "downloads" ]; then
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printf "$global"'
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download() {
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[ "$1" ] && echo "$1"
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}
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dlextract() {
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[ "$1" ] && echo "$1"
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}
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dlfile() {
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[ "$1" ] && echo "$1"
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}
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header_end() { exit 0; }
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. %s
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' "$satellite" | PATH= /bin/sh 2> /dev/null
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elif [ "$function" = "options" ]; then
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printf "$global"'
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define_option() {
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[ "$1" ] && echo "$1"
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}
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header_end() { exit 0; }
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. %s
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' "$satellite" | PATH= /bin/sh 2> /dev/null
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else
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show_help
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exit 1
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fi
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