author | Tero Marttila <terom@fixme.fi> |
Thu, 05 Jan 2012 15:05:38 +0200 | |
changeset 11 | 8e5fce1229b6 |
parent 10 | 2535c16e07a3 |
child 15 | e3893b949972 |
permissions | -rw-r--r-- |
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## library functions |
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LOG_DEBUG= |
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LOG_CMD=y |
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LOG_INFO=y |
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LOG_WARN=y |
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LOG_ERROR=y |
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function log_debug () { |
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[ $LOG_DEBUG ] && echo "... $@" >&2 |
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return 0 |
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} |
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function log_debugf () { |
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local fmt=$1; shift 1 |
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[ $LOG_DEBUG ] && printf "... $fmt\n" "$@" >&2 |
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return 0 |
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} |
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function log_info () { |
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[ $LOG_INFO ] && echo "--- $@" >&2 |
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return 0 |
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} |
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function log_cmd () { |
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[ $LOG_CMD ] && echo ">>> $@" >&2 |
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return 0 |
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} |
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function log_warn () { |
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[ $LOG_WARN ] && echo "XXX $@" >&2 |
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return 0 |
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} |
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function log_error () { |
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[ $LOG_ERROR ] && echo "!!! $@" >&2 |
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return 0 |
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} |
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function die () { |
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log_error "$@" |
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exit 1 |
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} |
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# Execute command verbosely, and exit on failure |
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CMD_MOCK= |
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CMD_PROMPT=y |
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function cmd () { |
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log_cmd "$@" |
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[ $CMD_MOCK ] && return 0 |
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eval "$@" # return $? |
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} |
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function cmd_confirm () { |
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[ $CMD_PROMPT ] && read -p "Confirm: $* ? " |
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cmd "$@" |
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} |
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function expand_MB () { |
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local size=${1^} |
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case ${size: -1} in |
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G) |
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size=$(( ${size%G} * 1024)) |
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;; |
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esac |
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echo $size |
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} |
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function extract_iso () { |
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iso=$1 |
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dst=$2 |
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[ ! -r "$iso" ] && die "Given .iso is not readable: $iso" |
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[ -z "$dst" ] && die "Must give destination: $dst" |
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[ -e "$dst" ] && die "Given destination already exists: $dst" |
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# temporary mount |
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mnt=$(mktemp -d mnt.XXXX) |
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# clean on exit |
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function cleanup () { |
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if mountpoint -q $mnt; then |
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sudo umount $mnt |
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fi |
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[ -d $mnt ] && rmdir $mnt |
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return $1 |
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} |
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# loop-mount |
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cmd sudo mount -o loop $iso $mnt || cleanup 1 |
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# copy |
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cmd cp -rd $mnt $dst || cleanup 1 |
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# done, cleanup |
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cleanup 0 |
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} |
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function my_md5sum () { |
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/usr/bin/md5sum $1 | ( |
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read md5sum path |
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echo $md5sum |
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) |
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} |
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function expand_line () { |
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local line=$1 |
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# evaluate {...} expressions |
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# a slight hack, but it works \o/ |
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# http://stackoverflow.com/questions/415677/how-to-replace-placeholders-in-a-text-file/7633579#7633579 |
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line="${line//\\/\\\\}" |
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line="${line//\"/\\\"}" |
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line="${line//\`/\\\`}" |
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line="${line//\$/\\\$}" |
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line="${line//{/\${}" # This is just for vim: } " |
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# log_debug "($line)" >&2 |
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eval "echo \"$line\"" |
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} |
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function expand_template () { |
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local tpl=$1 |
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local out=$2 |
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local linecount=0 |
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|
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# read in each line at a time |
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while IFS='' read -r line; do |
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linecount=$((linecount + 1)) |
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|
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if [ "${line:0:1}" == "#" ]; then |
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# ignore comments; pass through as-is |
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echo "$line" |
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|
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else |
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expand_line "$line" || die "Error at $tpl:$linecount: $line" |
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fi |
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|
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done < $tpl > $out |
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} |
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|
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# Recursive expand_template files from src -> dst |
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# XXX: not used |
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function expand_tree () { |
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local src=$1 |
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local dst=$2 |
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local filter=${3:-'*'} |
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|
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for path in ${src}/${filter}; do |
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local name=$(basename $path) |
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local target=$dst/$name |
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|
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if [ -d $path ]; then |
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log_debug "expand_tree: $path -> $target" |
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expand_tree $path $target $filter |
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|
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elif [ -f $path ]; then |
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log_debug "expand_file: $path -> $target" |
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expand_file $path $target |
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|
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else |
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log_warn "ignore weird file: $path" |
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|
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fi |
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done |
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} |