Annotation of parser3/src/main/pa_table.C, revision 1.41
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)
1.40 paf 5: Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)
1.15 paf 6:
1.41 ! paf 7: $Id: pa_table.C,v 1.40 2001/11/05 11:46:29 paf Exp $
1.1 paf 8: */
9:
1.2 paf 10: #include <stdlib.h>
11:
1.1 paf 12: #include "pa_table.h"
13: #include "pa_pool.h"
1.25 paf 14: #include "pa_exception.h"
1.1 paf 15:
1.12 paf 16: Table::Table(Pool& apool,
1.18 paf 17: const String *aorigin_string,
1.35 parser 18: const Array *acolumns,
1.1 paf 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),
1.26 paf 25: name2number(pool()) {
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:
1.29 paf 34: int Table::column_name2index(const String& column_name, bool bark) const {
35: if(fcolumns) {// named
36: int result=name2number.get_int(column_name)-1; // -1 = column not found
37: if(bark && result<0)
1.39 parser 38: throw Exception(0, 0,
1.29 paf 39: &column_name,
40: "column not found");
41: return result;
42: } else { // nameless
1.36 parser 43: char *error_pos;
44: const char *cstr=column_name.cstr();
45: int result=(int)strtol(cstr, &error_pos, 0);
1.37 parser 46: if(*error_pos/*not EOS*/) {
47: result=-1;
1.30 paf 48: if(bark)
1.39 parser 49: throw Exception(0, 0,
1.30 paf 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:
1.41 ! paf 82: void Table::offset(bool absolute, int offset) {
1.22 paf 83: if(size())
1.41 ! paf 84: fcurrent=((absolute?0:fcurrent)+offset+size())%size();
1.1 paf 85: }
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