Annotation of parser3/src/main/pa_table.C, revision 1.27
1.14 paf 1: /** @file
1.15 paf 2: Parser: table class.
3:
1.10 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.15 paf 5:
1.11 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.10 paf 7:
1.27 ! paf 8: $Id: pa_table.C,v 1.26 2001/04/05 16:30:42 paf Exp $
1.1 paf 9: */
10:
1.2 paf 11: #include <stdlib.h>
12:
1.1 paf 13: #include "pa_table.h"
14: #include "pa_pool.h"
1.25 paf 15: #include "pa_exception.h"
1.1 paf 16:
1.12 paf 17: Table::Table(Pool& apool,
1.18 paf 18: const String *aorigin_string,
1.1 paf 19: Array *acolumns,
20: int initial_rows) :
1.12 paf 21: Array(apool, initial_rows),
1.13 paf 22:
1.18 paf 23: forigin_string(aorigin_string),
1.5 paf 24: fcurrent(0),
25: fcolumns(acolumns),
1.26 paf 26: name2number(pool()) {
1.1 paf 27:
1.5 paf 28: if(fcolumns)
29: for(int i=0; i<fcolumns->size(); i++) {
1.12 paf 30: const String& name=*fcolumns->get_string(i);
1.2 paf 31: name2number.put(name, i+1);
1.1 paf 32: }
1.2 paf 33: }
34:
1.21 paf 35: int Table::column_name2index(const String& column_name) const {
1.27 ! paf 36: if(fcolumns) // named
! 37: return name2number.get_int(column_name)-1; // -1 = column not found
! 38: else { // nameless
1.24 paf 39: char *error_pos=0;
40: int result=(int)strtol(column_name.cstr(), &error_pos, 0);
41: if(error_pos && *error_pos)
42: THROW(0, 0,
43: &column_name,
44: "invalid column number");
45: return result;
46: }
1.21 paf 47: }
48:
1.22 paf 49: const String *Table::item(int column) const {
1.21 paf 50: if(valid(fcurrent)) {
1.7 paf 51: const Array& row=at(fcurrent);
1.22 paf 52: if(column>=0 && column<row.size()) // proper index?
53: return row.get_string(column);
1.21 paf 54: }
55: return 0; // it's OK we don't have row|column, just return nothing
56: }
57:
1.23 paf 58: bool Table::locate(int column, const String& value) {
1.22 paf 59: for(fcurrent=0; fcurrent<size(); fcurrent++) {
1.23 paf 60: const String *item_value=item(column);
1.21 paf 61: if(item_value && *item_value==value)
62: return true;
1.2 paf 63: }
64:
1.21 paf 65: fcurrent=0;
66: return false;
1.22 paf 67: }
68:
69: void Table::shift(int offset) {
70: if(size())
71: fcurrent=(fcurrent+offset+size())%size();
1.1 paf 72: }
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