git.plutz.net Git - rawnet/blob - db_channel.sh

   1 #!/bin/sh
   2
   3 [ "$include_dbchannel" ] && return 0
   4 include_dbchannel="$0"
   5
   6 # == FILE FORMAT ==
   7 # ID    NAME    DESCRIPTION     LOGO    THEME   AUTHORS DESCR_CACHE FUTUREUSE
   8
   9 # == GLOBALS ==
  10 UNSET_CHANNEL='unset \
  11   CHANNEL_ID CHANNEL_NAME CHANNEL_DESCRIPTION CHANNEL_LOGO CHANNEL_THEME \
  12   CHANNEL_AUTHORS CHANNEL_DESCR_CACHE CHANNEL_FUTUREUSE
  13 '
  14
  15 LOCAL_CHANNEL='local \
  16   CHANNEL_ID CHANNEL_NAME CHANNEL_DESCRIPTION CHANNEL_LOGO CHANNEL_THEME \
  17   CHANNEL_AUTHORS CHANNEL_DESCR_CACHE CHANNEL_FUTUREUSE
  18 '
  19
  20 eval "$UNSET_CHANNEL"
  21
  22 chan_db="$_DATA/channels.db"
  23
  24 read_channel() {
  25   local channel="$1"
  26
  27   # Global exports
  28   CHANNEL_ID='' CHANNEL_NAME='' CHANNEL_DESCRIPTION='' CHANNEL_LOGO=''
  29   CHANNEL_THEME='' CHANNEL_AUTHORS='' CHANNEL_DESCR_CACHE=''
  30   CHANNEL_FUTUREUSE=''
  31
  32   if [ $# -eq 0 ]; then
  33     read -r CHANNEL_ID CHANNEL_NAME CHANNEL_DESCRIPTION CHANNEL_LOGO \
  34             CHANNEL_THEME CHANNEL_AUTHORS CHANNEL_DESCR_CACHE \
  35             CHANNEL_FUTUREUSE
  36   elif [ "$channel" -a -f "$chan_db" -a -r "$chan_db" ]; then
  37     read -r CHANNEL_ID CHANNEL_NAME CHANNEL_DESCRIPTION CHANNEL_LOGO \
  38             CHANNEL_THEME CHANNEL_AUTHORS CHANNEL_DESCR_CACHE \
  39             CHANNEL_FUTUREUSE <<-EOF
  40         $(grep "^${channel}     " "${chan_db}")
  41         EOF
  42   fi
  43   if [ "$CHANNEL_ID" ]; then
  44            CHANNEL_NAME="$(UNSTRING "${CHANNEL_NAME}")"
  45     CHANNEL_DESCRIPTION="$(UNSTRING "$CHANNEL_DESCRIPTION")"
  46         CHANNEL_AUTHORS="$(UNSTRING "$CHANNEL_AUTHORS")"
  47     CHANNEL_DESCR_CACHE="$(UNSTRING "$CHANNEL_DESCR_CACHE")"
  48   else
  49     eval "$UNSET_CHANNEL"
  50     return 1
  51   fi
  52 }
  53
  54 update_channel(){
  55   local id="${1}" name description logo theme authors descr_cache futureuse
  56   local ID NAME DESCRIPTION LOGO THEME AUTHORS DESCR_CACHE FUTUREUSE
  57   local arg
  58
  59   for arg in "$@"; do case $arg in
  60     name=*) name="${arg#*=}";;
  61     description=*) description="${arg#*=}";;
  62     logo=*) logo="${arg#*=}";;
  63     theme=*) theme="${arg#*=}";;
  64     authors=*) authors="${arg#*=}";;
  65   esac; done
  66
  67   if LOCK "$chan_db"; then
  68     while read -r ID NAME DESCRIPTION LOGO THEME AUTHORS DESCR_CACHE FUTUREUSE; do
  69       if [ "$id" = "$ID" ]; then
  70         printf '%s      %s      %s      %s      %s      %s      %s      %s\n' \
  71                "$id" "$(STRING "${name-$(UNSTRING "$NAME")}")" \
  72                "$(STRING "${description-$(UNSTRING "$DESCRIPTION")}")" \
  73                "${logo:-${logo-${LOGO}}${logo+\\}}" \
  74                "${theme:-${theme-${THEME}}${theme+\\}}" \
  75                "$(STRING "${authors-$(UNSTRING "${AUTHORS}")}")" \
  76                "$(printf %s "${description-$(UNSTRING "$DESCRIPTION")}" |markdown |STRING)" \
  77                "${FUTUREUSE:-\\}"
  78       else
  79         printf '%s      %s      %s      %s      %s      %s      %s      %s\n' \
  80                "$ID" "$NAME" "$DESCRIPTION" "$LOGO" "$THEME" "$AUTHORS" \
  81                "$DESCR_CACHE" "$FUTUREUSE"
  82       fi
  83     done <"$chan_db" >"${chan_db}.$$"
  84     mv -- "${chan_db}.$$" "${chan_db}"
  85     RELEASE "$chan_db"
  86   else
  87     return 1
  88   fi
  89 }
  90
  91 new_channel(){
  92   local channel="${1:-$(randomid)}"
  93
  94   if LOCK "$chan_db"; then
  95     if grep -q "^${channel}     " "$chan_db"; then
  96       RELEASE "$chan_db"
  97       return 1
  98     fi
  99     printf '%s  \\      \\      \\      \\      %s      \\      \\\n' \
 100            "$channel" "$(STRING "$USER_ID")" >>"$chan_db"
 101     RELEASE "$chan_db"
 102   else
 103     return 1
 104   fi
 105 }
 106
 107 AUTHOR(){
 108   if [ "$CHANNEL_ID" -a "$USER_ID" -a ! "${CHANNEL_AUTHORS##*${USER_ID}*}" ]; then
 109     return 0
 110   else
 111     return 1
 112   fi
 113 }