Annotation of parser3/src/main/pa_table.C, revision 1.32
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:
1.32 ! parser 8: $Id: pa_table.C,v 1.31 2001/05/17 15:57:35 parser Exp $
1.1 paf 9: */
1.32 ! parser 10: static char *RCSId="$Id$";
1.1 paf 11:
1.2 paf 12: #include <stdlib.h>
13:
1.1 paf 14: #include "pa_table.h"
15: #include "pa_pool.h"
1.25 paf 16: #include "pa_exception.h"
1.1 paf 17:
1.12 paf 18: Table::Table(Pool& apool,
1.18 paf 19: const String *aorigin_string,
1.1 paf 20: Array *acolumns,
21: int initial_rows) :
1.12 paf 22: Array(apool, initial_rows),
1.13 paf 23:
1.18 paf 24: forigin_string(aorigin_string),
1.5 paf 25: fcurrent(0),
26: fcolumns(acolumns),
1.26 paf 27: name2number(pool()) {
1.1 paf 28:
1.5 paf 29: if(fcolumns)
30: for(int i=0; i<fcolumns->size(); i++) {
1.12 paf 31: const String& name=*fcolumns->get_string(i);
1.2 paf 32: name2number.put(name, i+1);
1.1 paf 33: }
1.2 paf 34: }
35:
1.29 paf 36: int Table::column_name2index(const String& column_name, bool bark) const {
37: if(fcolumns) {// named
38: int result=name2number.get_int(column_name)-1; // -1 = column not found
39: if(bark && result<0)
40: THROW(0, 0,
41: &column_name,
42: "column not found");
43: return result;
44: } else { // nameless
1.24 paf 45: char *error_pos=0;
46: int result=(int)strtol(column_name.cstr(), &error_pos, 0);
1.30 paf 47: if(error_pos && *error_pos) {
48: result=-1;
49: if(bark)
50: THROW(0, 0,
51: &column_name,
52: "invalid column number");
53: }
1.24 paf 54: return result;
55: }
1.21 paf 56: }
57:
1.22 paf 58: const String *Table::item(int column) const {
1.21 paf 59: if(valid(fcurrent)) {
1.7 paf 60: const Array& row=at(fcurrent);
1.22 paf 61: if(column>=0 && column<row.size()) // proper index?
62: return row.get_string(column);
1.21 paf 63: }
64: return 0; // it's OK we don't have row|column, just return nothing
65: }
66:
1.23 paf 67: bool Table::locate(int column, const String& value) {
1.31 parser 68: int scurrent=fcurrent;
1.22 paf 69: for(fcurrent=0; fcurrent<size(); fcurrent++) {
1.23 paf 70: const String *item_value=item(column);
1.21 paf 71: if(item_value && *item_value==value)
72: return true;
1.2 paf 73: }
74:
1.31 parser 75: fcurrent=scurrent;
1.21 paf 76: return false;
1.28 paf 77: }
78:
79: bool Table::locate(const String& column, const String& value) {
1.29 paf 80: return locate(column_name2index(column, true), value);
1.22 paf 81: }
82:
83: void Table::shift(int offset) {
84: if(size())
85: fcurrent=(fcurrent+offset+size())%size();
1.1 paf 86: }
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