flower/textdb.hh

   1 #ifndef TEXTDB_HH
   2 #define TEXTDB_HH
   3
   4 #include "textstr.hh"
   5
   6 /**a "const" Array. Contents can't be changed. do "#" comments, read quote enclosed  fields */
   7
   8 class Text_record : Array<String>
   9 {
  10     int line_no;
  11     String filename;
  12
  13 public:
  14     Text_record() { } // needed because of other ctor
  15
  16     /// report an error in this line.
  17     message(String s) {
  18         cerr << '\n'<< filename << ": "<< line_no << s << "\n";
  19     }
  20     String operator[](int j) {
  21         return Array<String>::operator[](j);
  22     }
  23
  24     Text_record(Array<String> s, String fn, int j) : Array<String>(s) {
  25         filename = fn; line_no = j;
  26     }
  27     Array<String>::size;
  28 };
  29
  30 /** abstraction for a datafile.
  31     add a subrec/fieldsep/record separator
  32     */
  33
  34 class Text_db : private Data_file
  35 {
  36     void gobble_leading_white();
  37 public:
  38     /// get a line with records
  39     Text_record    get_record();
  40
  41     Text_db(String fn):Data_file(fn) { }
  42     Data_file::error;
  43     bool eof();
  44
  45     /// get next line.
  46     Text_record operator++(int) {
  47         return get_record();
  48     }
  49     /// are we done yet?
  50     operator bool() {
  51         return !eof();
  52     }
  53 };
  54
  55 #endif