src/dimen.cc

   1 #include <ctype.h>
   2 #include "dimen.hh"
   3 #include "debug.hh"
   4 #include "string.hh"
   5
   6 Real
   7 parse_dimen(String dim)
   8 {
   9     int i=dim.len()-1;
  10     const char *s = dim;
  11     while  (i > 0 && (isspace(s[i]) || isalpha(s[i])) ){
  12         i--;
  13     }
  14     String unit(s + i+1);
  15     return convert_dimen(dim.fvalue(), unit);
  16 }
  17
  18
  19 Real
  20 convert_dimen(Real quant, String unit)
  21 {
  22     if (unit == "cm")
  23         return quant * CM_TO_PT;
  24     if (unit == "pt")
  25         return quant;
  26     if (unit == "mm")
  27         return quant*CM_TO_PT/10;
  28     if (unit == "in")
  29         return quant * INCH_TO_PT;
  30     error ("unknown length unit: `" + unit+"'");
  31 }
  32
  33 String
  34 print_dimen(Real r)
  35 {
  36     String s(r);
  37     s += "pt ";
  38     return s;
  39 }