Annotation of parser3/src/main/pa_table.C, revision 1.44
1.14 paf 1: /** @file
1.15 paf 2: Parser: table class.
3:
1.43 paf 4: Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.44 ! paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.15 paf 6:
1.44 ! paf 7: $Id: pa_table.C,v 1.43 2002/02/08 07:27:49 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: }
1.42 paf 32: }
33:
34: Table::Table(const Table& source) :
35: Array(source),
36:
37: forigin_string(source.forigin_string),
38: fcurrent(source.fcurrent),
39: fcolumns(source.fcolumns),
40: name2number(source.name2number) {
41:
1.2 paf 42: }
43:
1.29 paf 44: int Table::column_name2index(const String& column_name, bool bark) const {
45: if(fcolumns) {// named
46: int result=name2number.get_int(column_name)-1; // -1 = column not found
47: if(bark && result<0)
1.39 parser 48: throw Exception(0, 0,
1.29 paf 49: &column_name,
50: "column not found");
51: return result;
52: } else { // nameless
1.36 parser 53: char *error_pos;
54: const char *cstr=column_name.cstr();
55: int result=(int)strtol(cstr, &error_pos, 0);
1.37 parser 56: if(*error_pos/*not EOS*/) {
57: result=-1;
1.30 paf 58: if(bark)
1.39 parser 59: throw Exception(0, 0,
1.30 paf 60: &column_name,
61: "invalid column number");
62: }
1.24 paf 63: return result;
64: }
1.21 paf 65: }
66:
1.22 paf 67: const String *Table::item(int column) const {
1.21 paf 68: if(valid(fcurrent)) {
1.7 paf 69: const Array& row=at(fcurrent);
1.22 paf 70: if(column>=0 && column<row.size()) // proper index?
71: return row.get_string(column);
1.21 paf 72: }
73: return 0; // it's OK we don't have row|column, just return nothing
74: }
75:
1.23 paf 76: bool Table::locate(int column, const String& value) {
1.31 parser 77: int scurrent=fcurrent;
1.22 paf 78: for(fcurrent=0; fcurrent<size(); fcurrent++) {
1.23 paf 79: const String *item_value=item(column);
1.21 paf 80: if(item_value && *item_value==value)
81: return true;
1.2 paf 82: }
83:
1.31 parser 84: fcurrent=scurrent;
1.21 paf 85: return false;
1.28 paf 86: }
87:
88: bool Table::locate(const String& column, const String& value) {
1.29 paf 89: return locate(column_name2index(column, true), value);
1.22 paf 90: }
91:
1.41 paf 92: void Table::offset(bool absolute, int offset) {
1.22 paf 93: if(size())
1.41 paf 94: fcurrent=((absolute?0:fcurrent)+offset+size())%size();
1.1 paf 95: }
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