Annotation of parser3/src/main/pa_table.C, revision 1.33
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)
1.1 paf 7: */
1.33 ! parser 8: static const char *RCSId="$Id: double.C,v 1.31 2001/06/28 07:41:59 parser Exp $";
1.1 paf 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,
1.1 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),
1.26 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)
38: THROW(0, 0,
39: &column_name,
40: "column not found");
41: return result;
42: } else { // nameless
1.24 paf 43: char *error_pos=0;
44: int result=(int)strtol(column_name.cstr(), &error_pos, 0);
1.30 paf 45: if(error_pos && *error_pos) {
46: result=-1;
47: if(bark)
48: THROW(0, 0,
49: &column_name,
50: "invalid column number");
51: }
1.24 paf 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) {
1.31 parser 66: int scurrent=fcurrent;
1.22 paf 67: for(fcurrent=0; fcurrent<size(); fcurrent++) {
1.23 paf 68: const String *item_value=item(column);
1.21 paf 69: if(item_value && *item_value==value)
70: return true;
1.2 paf 71: }
72:
1.31 parser 73: fcurrent=scurrent;
1.21 paf 74: return false;
1.28 paf 75: }
76:
77: bool Table::locate(const String& column, const String& value) {
1.29 paf 78: return locate(column_name2index(column, true), value);
1.22 paf 79: }
80:
81: void Table::shift(int offset) {
82: if(size())
83: fcurrent=(fcurrent+offset+size())%size();
1.1 paf 84: }
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