Annotation of parser3/src/main/pa_table.C, revision 1.31
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:
1.31 ! parser 8: $Id: pa_table.C,v 1.30 2001/05/08 12:58:00 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:
1.29 paf 35: int Table::column_name2index(const String& column_name, bool bark) const {
36: if(fcolumns) {// named
37: int result=name2number.get_int(column_name)-1; // -1 = column not found
38: if(bark && result<0)
39: THROW(0, 0,
40: &column_name,
41: "column not found");
42: return result;
43: } else { // nameless
1.24 paf 44: char *error_pos=0;
45: int result=(int)strtol(column_name.cstr(), &error_pos, 0);
1.30 paf 46: if(error_pos && *error_pos) {
47: result=-1;
48: if(bark)
49: THROW(0, 0,
50: &column_name,
51: "invalid column number");
52: }
1.24 paf 53: return result;
54: }
1.21 paf 55: }
56:
1.22 paf 57: const String *Table::item(int column) const {
1.21 paf 58: if(valid(fcurrent)) {
1.7 paf 59: const Array& row=at(fcurrent);
1.22 paf 60: if(column>=0 && column<row.size()) // proper index?
61: return row.get_string(column);
1.21 paf 62: }
63: return 0; // it's OK we don't have row|column, just return nothing
64: }
65:
1.23 paf 66: bool Table::locate(int column, const String& value) {
1.31 ! parser 67: int scurrent=fcurrent;
1.22 paf 68: for(fcurrent=0; fcurrent<size(); fcurrent++) {
1.23 paf 69: const String *item_value=item(column);
1.21 paf 70: if(item_value && *item_value==value)
71: return true;
1.2 paf 72: }
73:
1.31 ! parser 74: fcurrent=scurrent;
1.21 paf 75: return false;
1.28 paf 76: }
77:
78: bool Table::locate(const String& column, const String& value) {
1.29 paf 79: return locate(column_name2index(column, true), value);
1.22 paf 80: }
81:
82: void Table::shift(int offset) {
83: if(size())
84: fcurrent=(fcurrent+offset+size())%size();
1.1 paf 85: }
E-mail: