Annotation of parser3/src/main/pa_table.C, revision 1.24
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:
1.24 ! paf 8: $Id: pa_table.C,v 1.23 2001/03/28 14:07:17 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"
15:
1.12 paf 16: Table::Table(Pool& apool,
1.18 paf 17: const String *aorigin_string,
1.1 paf 18: Array *acolumns,
19: int initial_rows) :
1.12 paf 20: Array(apool, initial_rows),
1.13 paf 21:
1.18 paf 22: forigin_string(aorigin_string),
1.5 paf 23: fcurrent(0),
24: fcolumns(acolumns),
1.12 paf 25: name2number(pool(), false) {
1.1 paf 26:
1.5 paf 27: if(fcolumns)
28: for(int i=0; i<fcolumns->size(); i++) {
1.12 paf 29: const String& name=*fcolumns->get_string(i);
1.2 paf 30: name2number.put(name, i+1);
1.1 paf 31: }
1.2 paf 32: }
33:
1.21 paf 34: int Table::column_name2index(const String& column_name) const {
1.12 paf 35: if(fcolumns) { // named
1.22 paf 36: int column_number=name2number.get_int(column_name);
37: if(column_number)
38: return column_number-1;
39: else {
1.9 paf 40: THROW(0, 0,
1.6 paf 41: &column_name,
42: "column not found");
1.22 paf 43: return 0; // unreached
44: }
1.24 ! paf 45: } else { // nameless
! 46: char *error_pos=0;
! 47: int result=(int)strtol(column_name.cstr(), &error_pos, 0);
! 48: if(error_pos && *error_pos)
! 49: THROW(0, 0,
! 50: &column_name,
! 51: "invalid column number");
! 52: return result;
! 53: }
1.21 paf 54: }
55:
1.22 paf 56: const String *Table::item(int column) const {
1.21 paf 57: if(valid(fcurrent)) {
1.7 paf 58: const Array& row=at(fcurrent);
1.22 paf 59: if(column>=0 && column<row.size()) // proper index?
60: return row.get_string(column);
1.21 paf 61: }
62: return 0; // it's OK we don't have row|column, just return nothing
63: }
64:
1.23 paf 65: bool Table::locate(int column, const String& value) {
1.22 paf 66: for(fcurrent=0; fcurrent<size(); fcurrent++) {
1.23 paf 67: const String *item_value=item(column);
1.21 paf 68: if(item_value && *item_value==value)
69: return true;
1.2 paf 70: }
71:
1.21 paf 72: fcurrent=0;
73: return false;
1.22 paf 74: }
75:
76: void Table::shift(int offset) {
77: if(size())
78: fcurrent=(fcurrent+offset+size())%size();
1.1 paf 79: }
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