1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
// Implementation class for Basic command: Format$( d,formatStr )
/*
Grammar of format string (a try):
-----------------------------------------------
format_string := {\special_char} general_format | scientific_format {\special_char} {;format_string}
general_format := {#[,]}{0[,]}[.{0}{#}]
scientific_format := {0}[.{0}{#}](e | E)(+ | -){#}{0}
percent_char := '%'
special_char := \char | + | - | ( | ) | $ | space_char
char := all_ascii_chars
space_char := ' '
{} repeated multiple times (incl. zero times)
[] exactly one or zero times
() parenthesis, e.g. (e | E) means e or E times
Additional predefined formats for the format string:
"General Number"
"Currency"
"Fixed"
"Standard"
"Percent"
"Scientific"
"Yes/No"
"True/False"
"On/Off"
Note: invalid format string are ignored just as in VisualBasic, the output is
probably 'undefined'. ASCII letters are outputted directly.
Constraints in VisualBasic:
- the exponent (scientific syntax) has a maximum of three digits!
Constraints of new implementation:
- the '+' sign is not allowed as wildcard in the mantissa
TODO:
- Date formatting
Wildcards are: 'h', 'm', 's', 'y'
predefined String-Constants/Commands:
"AMPM", "Long Date", "Long Time"
*/
#include <rtl/ustring.hxx>
#include <rtl/ustrbuf.hxx>
class SbxBasicFormater {
public:
// Constructor takes signs for decimal point, thousand separation sign
// and necessary resource strings.
SbxBasicFormater( sal_Unicode _cDecPoint, sal_Unicode _cThousandSep,
const OUString& _sOnStrg,
const OUString& _sOffStrg,
const OUString& _sYesStrg,
const OUString& _sNoStrg,
const OUString& _sTrueStrg,
const OUString& _sFalseStrg,
const OUString& _sCurrencyStrg,
const OUString& _sCurrencyFormatStrg );
/* Basic command: Format$( number,format-string )
Parameter:
dNumber : number to be formatted
sFormatStrg : the Format-String, e.g. ###0.0###
Return value:
String containing the formatted output
*/
OUString BasicFormat( double dNumber, const OUString& sFormatStrg );
static OUString BasicFormatNull( const OUString& sFormatStrg );
static bool isBasicFormat( const OUString& sFormatStrg );
private:
static inline void ShiftString( OUStringBuffer& sStrg, sal_uInt16 nStartPos );
static void AppendDigit( OUStringBuffer& sStrg, short nDigit );
void LeftShiftDecimalPoint( OUStringBuffer& sStrg );
void StrRoundDigit( OUStringBuffer& sStrg, short nPos, bool& bOverflow );
void StrRoundDigit( OUStringBuffer& sStrg, short nPos );
static void ParseBack( OUStringBuffer& sStrg, const OUString& sFormatStrg,
short nFormatPos );
// Methods for string conversion with sprintf():
void InitScan( double _dNum );
void InitExp( double _dNewExp );
short GetDigitAtPosScan( short nPos, bool& bFoundFirstDigit );
short GetDigitAtPosExpScan( double dNewExponent, short nPos,
bool& bFoundFirstDigit );
short GetDigitAtPosExpScan( short nPos, bool& bFoundFirstDigit );
static OUString GetPosFormatString( const OUString& sFormatStrg, bool & bFound );
static OUString GetNegFormatString( const OUString& sFormatStrg, bool & bFound );
static OUString Get0FormatString( const OUString& sFormatStrg, bool & bFound );
static OUString GetNullFormatString( const OUString& sFormatStrg, bool & bFound );
static void AnalyseFormatString( const OUString& sFormatStrg,
short& nNoOfDigitsLeft, short& nNoOfDigitsRight,
short& nNoOfOptionalDigitsLeft,
short& nNoOfExponentDigits,
short& nNoOfOptionalExponentDigits,
bool& bPercent, bool& bCurrency, bool& bScientific,
bool& bGenerateThousandSeparator,
short& nMultipleThousandSeparators );
void ScanFormatString( double dNumber, const OUString& sFormatStrg,
OUString& sReturnStrg, bool bCreateSign );
//*** Data ***
sal_Unicode cDecPoint; // sign for the decimal point
sal_Unicode cThousandSep; // sign for thousand delimiter
// Text for output:
OUString sOnStrg;
OUString sOffStrg;
OUString sYesStrg;
OUString sNoStrg;
OUString sTrueStrg;
OUString sFalseStrg;
OUString sCurrencyStrg;
OUString sCurrencyFormatStrg;
//*** temporary data for scan loop ***
// String containing the number in scientific format
OUString sSciNumStrg;
// String containing the exponent of the number
OUString sNumExpStrg;
double dNum; // the number that is scanned
short nNumExp; // the exponent of the number
short nExpExp; // the number of digits in the exponent
};
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
