setup.ini maker for cygwin

upset.sh

#!/usr/bin/env bash
# Copyright (c) 2013 Koichi OKADA. All rights reserved.
# This script is distributed under the MIT license.
# http://www.opensource.org/licenses/mit-license.php

SCRIPTNAME=${0##*/}

function usage ()
{
cat <<EOD
Usage: ${SCRIPTNAME} [options]
    setup.ini maker for cygwin

options:
    --direct           -d              Do not backup.
    --update           -u              Update setup.ini
    --quiet            -q              Quiet (when -u option is gived).
    --help             -h              Show this help.

This script find setup.hint files from under x86 and x86_64 directories
and collect package informations.

The setup.hint file must have follow lines:
-------------------------------------------
@ packagename
sdesc: "short description"
ldesc: "long description
...
"
category: categories
requires: require packages

@ packagename
...
-------------------------------------------
Brank line separates packages.

EOD
}

function mkbackup ()
{
  if [ -e "$1" ]; then
    local BAK="$1.$(date -r "$1" +%Y%m%d_%H%M%S)~"
    $OPT_q || echo "backup $1 to $BAK" > /dev/stderr
    mv "$1" "$BAK"
  fi
}

# splitentry SETUPHINT PKGNAME
function splitentry ()
{
  grep -A10000 "@ $2" "$1" \
  | awk '
    function isinstr(s, instr){
      while (s!="") {
        if (instr) {
          if (match(s, /^([^"\\]*|\\x[0-9a-fA-f][0-9a-fA-F]?|\\[0-9][0-9]?[0-9]?|\\.|\\$)*/))
            s = substr(s, RSTART + RLENGTH);
        } else {
          if (match(s, /^[^"]*/))
            s = substr(s, RSTART + RLENGTH);
        }
        if (match(s,/^"/)) {
          s = substr(s, RSTART + RLENGTH);
          instr = !instr
        }
      }
      return instr
    }
    
    {
      if (!instr && $0 == "") {
        exit;
      }
      print $0;
      instr = isinstr($0, instr);
    }
  ' \
  | grep -v '^version:\|^install:' \
  | sed -e 's/\r\n/\n/g'
}

function upset () {
  find $1 -type f -name '*.tar.bz2' -or -name '*.tar.xz' | sed -r 's:^./::g' | while read i; do
    [ "$OPT_u" == "true" -a "$OPT_q" == "false" ] && echo -n . >&2
    local FILEPATH="$i"
    local BASEPATH="${FILEPATH%/*}"
    local SETUPHINT="${BASEPATH}/setup.hint"
    if [ -e $SETUPHINT ]; then
      local FILENAME="${FILEPATH##*/}"
      local FILENAMEBODY="${FILENAME%.tar*}"
      local PKGNAME="${BASEPATH##*/}"
      local VERSION="$(echo "${FILENAMEBODY}" | cut -b$[ ${#PKGNAME} + 2 ]- )"
      local HASH="$(md5sum $i | cut -d" " -f1)"
      local SIZE="$(ls -l $FILEPATH | cut -d" " -f5)"
      splitentry "$SETUPHINT" "$PKGNAME"  && \
      echo version: $VERSION              && \
      echo install: $FILEPATH $SIZE $HASH && \
      echo
    fi
  done
}

OPT_q=false
OPT_d=false
OPT_u=false

while [ $# -gt 0 ]; do
  case "$1" in
  --help|-h)
    usage
    exit
    ;;
  --direct|-d)
    OPT_d=true
    shift
    ;;
  --update|-u)
    OPT_u=true
    shift
    ;;
  --quiet|-q)
    OPT_q=true
    shift
    ;;
  *)
    echo -e "\e[31;1mError:\e[21m unknown parameter:\e[0m $1"
    echo
    usage
    exit
    ;;
  esac
done

for i in x86 x86_64; do
  if "$OPT_u"; then
    $OPT_d || mkbackup $i/setup.ini
    $OPT_q || echo -n "updating $i/setup.ini " >&2
    upset $i > $i/setup.ini
    $OPT_q || echo -e "\ndone" >&2
  else
    upset $i
  fi
done