blob: 556253e923b520f8635ecd2dbfa72466d720b530 (
plain)
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
|
/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
///////////////////////////////////////////////////////////////////////
// Class Utils
// Vector Utility functions
///////////////////////////////////////////////////////////////////////
function ParseUtils( theStr )
{
///////////////////////////////////////////////////////////////////////
// Instance variables
///////////////////////////////////////////////////////////////////////
this._strBuffer = theStr;
///////////////////////////////////////////////////////////////////////
// Property accessors
///////////////////////////////////////////////////////////////////////
this.getBuffer = function() { return this._strBuffer; }
this.setBuffer = function(b) { this._strBuffer = b; }
///////////////////////////////////////////////////////////////////////
// Methods
///////////////////////////////////////////////////////////////////////
this.nextValue = function( prop, endKeyArg, advanceBufferArg )
{
if (!this._strBuffer) return;
// make the 2 & 3rd argument optional. default is to advance the string
var endKey = "\n", advanceBuffer = true;
if (endKeyArg)
endKey = endKeyArg;
if (advanceBufferArg)
advanceBuffer = advanceBufferArg;
var iStart = this._strBuffer.indexOf( prop );
if (iStart < 0) return;
var iEnd = this._strBuffer.indexOf( endKey, iStart );
if (iEnd < 0) throw new Error( "property " + prop + " improperly terminated: " + this._strBuffer);
iStart += prop.length;
var nChars = iEnd - iStart;
var rtnStr = this._strBuffer.substr( iStart, nChars );
if (advanceBuffer)
this._strBuffer = this._strBuffer.substr( iEnd + endKey.length );
return rtnStr;
}
this.nextToken = function()
{
if (!this._strBuffer) return;
// find the limits
var index = this._strBuffer.search( /\S/ ); // first non-whitespace character
if (index > 0) this._strBuffer = this._strBuffer.slice(index);
index = this._strBuffer.search( /\s/ ); // first whitespace character marking the end of the token
var token;
if (index > 0)
{
token = this._strBuffer.slice(0, index);
this._strBuffer = this._strBuffer.slice( index );
}
return token;
}
this.advancePastToken = function( token )
{
var index = this._strBuffer.indexOf( token );
if (index < 0)
console.log( "could not find token: " + token + " in string: " + this._strBuffer );
else
this._strBuffer = this._strBuffer.substr( index + token.length );
}
}
|