Dogcows Code - chaz/yoink/blob - build/functions.sh

   1
   2
   3 # Print error message to stderr and exit.  The error message can either be
   4 # given as parameters or from stdin.
   5 die()
   6 {
   7         echo -n "fatal: " >/dev/stderr
   8         if [ "x$*" != x ]
   9         then
  10                 echo $* >/dev/stderr
  11         else
  12                 while read line;
  13                 do
  14                         echo $line >/dev/stderr
  15                 done
  16         fi
  17         exit 1
  18 }
  19
  20 # Parse an argument from an option in the form --option=argument.
  21 parse_argument()
  22 {
  23         echo $(echo $2 | sed -e "s/--$1=\\(.*\\)$/\\1/")
  24         return $?
  25 }
  26
  27 # Insert all the escapes necessary to correctly quote a string for use in a
  28 # shell command.
  29 quote_string()
  30 {
  31         for arg in "$@"
  32         do
  33                 echo $1 | sed -e "s/'/\\'/g" \
  34                                           -e 's/"/\\"/g' \
  35                                           -e 's/|/\\|/g' \
  36                                           -e 's/&/\\&/g' \
  37                                           -e 's/;/\\;/g' \
  38                                           -e 's/;/\\;/g' \
  39                                           -e 's/(/\\(/g' \
  40                                           -e 's/)/\\)/g' \
  41                                           -e 's/</\\</g' \
  42                                           -e 's/>/\\>/g' \
  43                                           -e 's/ /\\ /g' \
  44                                           -e "s/\t/\\\t/g" \
  45                                           -e 's/\$/\\\$/g'
  46         done
  47 }
  48
  49 # Add a definition to the compiler flags.  The optional second parameter is
  50 # the unquoted value.
  51 define()
  52 {
  53         if test "x$2" = x
  54         then
  55                 defines="$defines -D$1"
  56         else
  57                 defines="$defines -D$1=$2"
  58         fi
  59 }
  60
  61 # Add a definition to the compiler flags with a quoted value.
  62 define_string()
  63 {
  64         arg=$(quote_string "$2")
  65         define "$1" "\\\"$arg\\\""
  66 }
  67
  68 undefine()
  69 {
  70         for arg in "$@"
  71         do
  72                 defines="$defines -U$arg"
  73         done
  74 }
  75
  76 is_defined()
  77 {
  78         for arg in "$@"
  79         do
  80                 echo "$defines" | grep -e "-D$arg" 2>&1 >/dev/null || return 1
  81         done
  82         return 0
  83 }
  84
  85 is_undefined()
  86 {
  87         for arg in "$@"
  88         do
  89                 echo "$defines" | grep -e "-U$arg" 2>&1 >/dev/null || return 1
  90         done
  91         return 0
  92 }
  93