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https://git.do.srb2.org/STJr/ZoneBuilder.git
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844 lines
28 KiB
OpenEdge ABL
844 lines
28 KiB
OpenEdge ABL
VERSION 1.0 CLASS
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BEGIN
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MultiUse = -1 'True
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Persistable = 0 'NotPersistable
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DataBindingBehavior = 0 'vbNone
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DataSourceBehavior = 0 'vbNone
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MTSTransactionMode = 0 'NotAnMTSObject
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END
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Attribute VB_Name = "clsConfiguration"
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Attribute VB_GlobalNameSpace = False
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Attribute VB_Creatable = False
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Attribute VB_PredeclaredId = False
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Attribute VB_Exposed = False
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' ====================================================================================
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' INTRODUCTION
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' ====================================================================================
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'
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' Configuration Class Module by Pascal vd Heiden, www.codeimp.com
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'
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' This Class module contains code of my design. You are free to use it,
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' as long as you do not remove my details up here in this comment. Thanks.
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'
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' This Class module requires "Microsoft Scripting Runtime" reference (scrrun.dll)
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' for the Dictionary object. Select this in the Project -> References dialog.
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'
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' Can safely be compiled with Fast Optimization and
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' all Advanced Optimization switches checked.
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'
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'
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' ====================================================================================
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' CONFIGURATION FILE STRUCTURE SYNTAX
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' ====================================================================================
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'
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' Whitepace is always allowed. This includes spaces, tabs
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' linefeeds (10) and carriage returns (13)
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'
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' Keys may not have spaces or assignment operator = in them.
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'
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' Comments start with // (unless used within strings)
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' and count as comment for the rest of the line. Or use /* and */
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' to mark the beginning and end of a comment.
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'
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' Simple setting:
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'
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' key = value;
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'
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' Example: speed = 345;
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' cars = 8;
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'
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' Strings must be in quotes.
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'
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' Example: nickname = "Gherkin";
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' altnick = "Gherk inn";
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'
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' String Escape Sequences:
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' \n New line (10)
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' \r Carriage return (13)
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' \t Tab (9)
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' \" Double-quotation mark
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' \\ Backslash
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' \000 Any ASCII character (MUST be 3 digits! So for 13 you use \013)
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'
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' Decimals ALWAYS use a dot, NEVER comma!
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'
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' Example: pressure = 15.29;
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' acceleration = 1.0023;
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'
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' Structures must use brackets.
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'
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' Structure Example:
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'
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' key
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' {
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' key = value;
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' key = value;
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'
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' key
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' {
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' key = value;
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' key = value;
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' key = value;
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' }
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'
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' key = value;
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' key = value;
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' key = value;
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' key = value;
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' key = value;
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' }
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'
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' As you can see, structures inside structures are allowed
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' and you may go as deep as you want. Note that only the root structures
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' can be readed from config using ReadSetting. ReadSetting will return a
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' Dictionary object containing everything in that root structure.
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'
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' Key names must be unique within their scope.
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'
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' This is NOT allowed, it may not have 'father' more
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' than once in the same scope:
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'
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' mother = 45;
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' father = 52;
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'
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' father
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' {
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' length = 1.87;
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' }
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'
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' This however is allowed, because father
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' now exists in a different scope:
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'
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' mother = 45;
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' father = 52;
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'
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' parents
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' {
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' father = 52;
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' }
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'
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' This too is allowed, both 'age' are in a different scope:
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'
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' mother
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' {
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' age = 45;
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' }
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'
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' father
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' {
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' age = 52;
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' }
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'
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'
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' ====================================================================================
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' FUNCTION CALL DESCRIPTIONS
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' ====================================================================================
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'
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' InputConfiguration
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'
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' This loads a configuration from a string. The string must contain a
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' configuration using the rules described above.
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'
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' ------------------------------------------------------------------------------------
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'
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' LoadConfiguration
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'
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' Loads a configuration from a file. The file must contain a configuration
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' using the rules described above.
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'
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' ------------------------------------------------------------------------------------
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'
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' NewConfiguration
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'
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' Erases all loaded settings and starts with a new, clear configuration
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'
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' ------------------------------------------------------------------------------------
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'
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' OutputConfiguration
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'
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' Returns the configuration as a string following the rules described above.
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' You can optionally determine the newline character to use and/or omit
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' whitespace in the result.
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'
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' ------------------------------------------------------------------------------------
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'
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' SaveConfiguration
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'
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' Writes the configuration to file following the rules described above.
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' You can optionally specify the newline character to use and/or omit
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' whitespace in the result.
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'
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' ------------------------------------------------------------------------------------
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'
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' ReadSetting
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'
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' Reads a setting from the root level and returns it in its own variable type.
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' You can optionally specify a default to return if the specified setting
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' does not exist and/or specify if you would like to get a reference if the
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' setting is a Dictionary object (structure in configuration).
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' If you use a reference, you can change the configuration immediately
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' through that reference.
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'
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' ------------------------------------------------------------------------------------
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'
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' WriteSetting
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'
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' Writes a setting to the root level in the configuration.
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' You can choose to write the setting as reference if it is of Dictionary type.
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' Note that your configuration changes too when you change anything
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' in your Dictionary when it is written as reference!
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'
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' ------------------------------------------------------------------------------------
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'
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' RemoveSetting
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'
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' Removes a setting from the root level in the configuration.
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' Its as simple as that. What else is there to tell about it?!
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'
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' ------------------------------------------------------------------------------------
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'
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' Root
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'
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' Returns the entire configuration (root level) as a Dictionary object.
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' You can optionally specify to return a reference through which you can change
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' the configuration immediately.
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'
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' ====================================================================================
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' ====================================================================================
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'Do not allow any undeclared variables
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Option Explicit
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'Case sensitive comparisions
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Option Compare Binary
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Private Const ASSIGNOP As Long = 61 ' =
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Private Const BEGINOP As Long = 123 ' {
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Private Const ENDOP As Long = 125 ' }
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Private Const TERMINATEOP As Long = 59 ' ;
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Private Const STRINGOP As Long = 34 ' "
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Private Const COMMENT As String = "//" '
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Private Const BEGINCOMMENT As String = "/*" '
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Private Const ENDCOMMENT As String = "*/" '
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Private Const WS_SPACE As Long = 32 ' space
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Private Const WS_LINEFEED As Long = 10 ' linefeed
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Private Const WS_TAB As String = vbTab '
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Private Const WS_RETURN As String = vbCr '
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Private Const ESCAPESEQ As Long = 92 ' \
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Private Const ES_NEWLINE As Long = 110 ' n
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Private Const ES_RETURN As Long = 114 ' r
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Private Const ES_TAB As Long = 116 ' t
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Private Const ES_QUOTE As Long = 34 ' "
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Private Const ES_BACKSLASH As Long = 92 ' \
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'This will hold the object orientated configuration
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Private Config As Dictionary
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'Last line that was read where error occurred
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Private cLastReadLine As Long
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Public Property Get CurrentScanLine() As Long
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CurrentScanLine = cLastReadLine
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End Property
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Private Sub Class_Initialize()
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'New database
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Set Config = New Dictionary
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End Sub
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Private Sub Class_Terminate()
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'Clean up
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Set Config = Nothing
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End Sub
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Private Function DeepCopy(ByRef Dict As Dictionary) As Dictionary
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Dim NewConfig As Dictionary
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Dim CopyObject As Dictionary
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Dim ConfigKeys As Variant
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Dim ConfigValue As Variant
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Dim i As Long
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'Create new config
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Set NewConfig = New Dictionary
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'Add all items from Config
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If Dict.Count Then
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ConfigKeys = Dict.Keys
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For i = LBound(ConfigKeys) To UBound(ConfigKeys)
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'Check if the value is a dictionary
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If VarType(Dict(ConfigKeys(i))) = vbObject Then
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'Get the object
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Set CopyObject = Dict(ConfigKeys(i))
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'Deepcopy this too
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NewConfig.Add ConfigKeys(i), DeepCopy(CopyObject)
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'Clean up
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Set CopyObject = Nothing
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Else
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'Normal copy
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ConfigValue = Dict(ConfigKeys(i))
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NewConfig.Add ConfigKeys(i), ConfigValue
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End If
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Next i
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End If
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'Return the result
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Set DeepCopy = NewConfig
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'Clean up
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Set NewConfig = Nothing
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End Function
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Private Function Escaped(ByRef Value As String) As String
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' \n New line
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' \r Carriage return
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' \t Tab
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' \" Double quotation mark
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' \\ Backslash
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'Copy string
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Escaped = Value
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'Replace characters with escape sequences
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Escaped = Replace$(Escaped, "\", "\\") 'Note the \ must be the first to replace!
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Escaped = Replace$(Escaped, vbLf, "\n")
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Escaped = Replace$(Escaped, vbCr, "\r")
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Escaped = Replace$(Escaped, vbTab, "\t")
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Escaped = Replace$(Escaped, """", "\""")
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End Function
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Public Sub InputConfiguration(ByVal Configuration As String)
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'This reads the data and builds a new dictionary object
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'Remove Returns and Tabs so we only have Linefeed as newline
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Configuration = Replace$(Configuration, WS_RETURN, "")
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Configuration = Replace$(Configuration, WS_TAB, "")
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'First line
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cLastReadLine = 1
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'Load main structure
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Set Config = LoadStructure(0, Configuration)
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End Sub
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Public Sub LoadConfiguration(ByRef Filename As String)
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Dim FB As Integer 'File buffer
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Dim Data As String 'Data
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'This reads a file and builds a new dictionary object
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'Open the file to read
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FB = FreeFile
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Open Filename For Binary As #FB
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'Read all data
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Data = Space$(LOF(FB))
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Get #FB, 1, Data
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'Close file
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Close #FB
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'Remove Returns and Tabs so we only have Linefeed as newline
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Data = Replace$(Data, WS_RETURN, "")
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Data = Replace$(Data, WS_TAB, "")
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'First line
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cLastReadLine = 1
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'Load main structure
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Set Config = LoadStructure(0, Data)
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End Sub
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Private Function LoadStructure(ByRef p As Long, ByRef Data As String) As Dictionary
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Dim c As String * 1 'Character at p
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Dim ca As Long 'ASCII value of c
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Dim np As Long 'Next position
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Dim StringData As Boolean 'True if in a string
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Dim NumberData As Boolean 'True if in a number
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Dim Sequence As Boolean 'True if getting a sequence character
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Dim Assigning As Boolean 'True when assigning
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Dim NewKey As String
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Dim NewValue As String
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'Create dictionary
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Set LoadStructure = New Dictionary
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'Continue until end of data
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Do While p < Len(Data)
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'Next char
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p = p + 1
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'Get char
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c = Mid$(Data, p, 1)
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ca = AscW(c)
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'Check if we are processing number data
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If NumberData Then
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'Check if assignment ends
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If ca = TERMINATEOP Then
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'Check number type
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If InStr(NewValue, ".") <> 0 Then
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'Add the number to dictionary as single
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LoadStructure.Add Trim$(NewKey), CSng(Val(NewValue))
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Else
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'Add the number to dictionary as long
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LoadStructure.Add Trim$(NewKey), CLng(NewValue)
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End If
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'Reset
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NewKey = ""
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NewValue = ""
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'End of assign
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NumberData = False
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Assigning = False
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'Check if newline
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ElseIf (ca = WS_LINEFEED) Then
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'Count the new line
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cLastReadLine = cLastReadLine + 1
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Else
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'Add to value
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NewValue = NewValue & c
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End If
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'Check if we are processing string data
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ElseIf StringData Then
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'Check if previous char was a slash
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If Sequence Then
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'Check the char
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Select Case ca
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Case ES_BACKSLASH: NewValue = NewValue & "\"
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Case ES_NEWLINE: NewValue = NewValue & vbLf
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Case ES_QUOTE: NewValue = NewValue & """"
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Case ES_RETURN: NewValue = NewValue & vbCr
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Case ES_TAB: NewValue = NewValue & vbTab
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Case Else
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'Check if its a number
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If IsNumeric(c) Then
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'Always 3 chars
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np = CLng(Mid$(Data, p, 3))
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NewValue = NewValue & ChrW$(np)
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p = p + 2
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Else
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'Add character
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NewValue = NewValue & c
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End If
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End Select
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'End of sequence
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Sequence = False
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Else
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'Check if sequence start
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If ca = ESCAPESEQ Then
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'Start escape sequence
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Sequence = True
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'Check if string ends
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ElseIf ca = STRINGOP Then
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'Add the string to dictionary
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LoadStructure.Add Trim$(NewKey), NewValue
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'End of string
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StringData = False
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'Reset
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NewKey = ""
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NewValue = ""
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'Check if newline
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ElseIf (ca = WS_LINEFEED) Then
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'Count the new line
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cLastReadLine = cLastReadLine + 1
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Else
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'Add to string
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NewValue = NewValue & c
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End If
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End If
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'Check if assigning
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ElseIf Assigning Then
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'Check for STRINGOP or Numeric character
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If (ca = STRINGOP) Then
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'Begin string data here
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StringData = True
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ElseIf (IsNumeric(c) = True) Or (c = "-") Or (c = ".") Or (LCase$(c) = "e") Or (c = "&") Then
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'Begin numeric data here
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NumberData = True
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'Note that this byte is part of the value
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p = p - 1
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'Check if newline
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ElseIf (ca = WS_LINEFEED) Then
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'Count the new line
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cLastReadLine = cLastReadLine + 1
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'Check if assignment ends
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ElseIf (ca = TERMINATEOP) Then
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'End of assign
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Assigning = False
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'Everything else but spaces are not allowed
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ElseIf (ca <> WS_SPACE) Then
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'Invalid assignment
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Err.Raise vbObjectError, , "Invalid assignment. Forgot an assignment terminator?"
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End If
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'Anything else
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Else 'If (ca <> WS_SPACE) Then
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'Check for a Key, BEGINOP, ENDOP or ASSIGNOP, COMMENT or whitespace
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Select Case ca
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Case BEGINOP
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'Check for spaces in key name
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If (InStr(Trim$(NewKey), " ") > 0) Then
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'Spaces not allowed in key names
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Err.Raise vbObjectError, , "Spaces not allowed in key names."
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Else
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'Add structure
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LoadStructure.Add Trim$(NewKey), LoadStructure(p, Data)
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'Reset
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NewKey = ""
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End If
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Case ENDOP
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'Leave here
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Exit Do
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Case ASSIGNOP
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'Check for spaces in key name
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If (InStr(Trim$(NewKey), Chr$(WS_SPACE)) > 0) Then
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'Spaces not allowed in key names
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Err.Raise vbObjectError, , "Spaces not allowed in key names."
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Else
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'Now assigning
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Assigning = True
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End If
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Case TERMINATEOP
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'Add the key to dictionary with 0 value
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LoadStructure.Add Trim$(NewKey), CLng(0)
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'Reset
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NewKey = ""
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NewValue = ""
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Case WS_LINEFEED
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'Count the new line
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cLastReadLine = cLastReadLine + 1
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'Add as space
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NewKey = NewKey & Chr$(WS_SPACE)
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'Check for possible comment
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Case AscW(COMMENT), AscW(BEGINCOMMENT)
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'Check for 2 bytes line comment
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If Mid$(Data, p, 2) = COMMENT Then
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'Find the next linefeed
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np = InStr(p, Data, vbLf)
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'Check if linefeed was found
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If np > 0 Then
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'Count linefeed
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cLastReadLine = cLastReadLine + 1
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'Skip to next
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p = np
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Else
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'No linefeed can be found, end of file!
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p = Len(Data)
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Exit Do
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End If
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'Check for 2 bytes block comment
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ElseIf Mid$(Data, p, 2) = BEGINCOMMENT Then
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'Find the next endcomment
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np = InStr(p, Data, ENDCOMMENT)
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'Check if endcomment was found
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If np > 0 Then
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'Count the number of linefeeds in comment block
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cLastReadLine = cLastReadLine + UBound(Split(Mid$(Data, p, np - p), Chr$(WS_LINEFEED)))
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'Skip to next
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p = np + 1
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Else
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|
|
'No endcomment can be found, end of file!
|
|
p = Len(Data)
|
|
Exit Do
|
|
End If
|
|
End If
|
|
|
|
'Add to key name
|
|
Case Else: NewKey = NewKey & c
|
|
|
|
End Select
|
|
End If
|
|
Loop
|
|
End Function
|
|
|
|
Public Sub NewConfiguration()
|
|
|
|
'First line
|
|
cLastReadLine = 1
|
|
|
|
'Create new, empty dictionary
|
|
Set Config = New Dictionary
|
|
End Sub
|
|
|
|
Public Function OutputConfiguration(Optional ByVal NewLine As String = vbCrLf, Optional ByVal Whitespace As Boolean = True) As String
|
|
|
|
'Create configuration as string
|
|
OutputConfiguration = OutputDictionary(Config, 0, NewLine, Whitespace)
|
|
End Function
|
|
|
|
Private Function OutputDictionary(ByRef Dict As Dictionary, ByVal Level As Long, Optional ByVal NewLine = vbCrLf, Optional ByVal Whitespace As Boolean = True) As String
|
|
Dim LevelTabs As String
|
|
Dim sp As String
|
|
Dim Keys As Variant
|
|
Dim Data As String
|
|
Dim i As Long
|
|
|
|
'Check if this dictionary is not empty
|
|
If Dict.Count > 0 Then
|
|
|
|
'Create whitespace
|
|
If Whitespace Then
|
|
LevelTabs = String$(Level, vbTab)
|
|
sp = " "
|
|
End If
|
|
|
|
'Get the keys
|
|
Keys = Dict.Keys
|
|
|
|
'Go for all keys in dictionary
|
|
For i = LBound(Keys) To UBound(Keys)
|
|
|
|
'Check type of value
|
|
Select Case VarType(Dict(Keys(i)))
|
|
|
|
'Dictionary Object
|
|
Case vbObject
|
|
|
|
'Output empty line
|
|
If Whitespace Then Data = Data & LevelTabs & NewLine
|
|
|
|
'Output the key
|
|
Data = Data & LevelTabs & Keys(i) & NewLine
|
|
|
|
'Ouput the BEGINOP
|
|
Data = Data & LevelTabs & ChrW$(BEGINOP) & NewLine
|
|
|
|
'Output Dictionary
|
|
Data = Data & OutputDictionary(Dict(Keys(i)), Level + 1, NewLine, Whitespace)
|
|
|
|
'Output the ENDOP
|
|
Data = Data & LevelTabs & ChrW$(ENDOP) & NewLine
|
|
|
|
'Output empty line
|
|
If Whitespace Then Data = Data & LevelTabs & NewLine
|
|
|
|
'Integral Number
|
|
Case vbInteger, vbLong, vbByte
|
|
|
|
'Output the key = value;
|
|
Data = Data & LevelTabs & Keys(i) & sp & ChrW$(ASSIGNOP) & sp & Dict(Keys(i)) & ChrW$(TERMINATEOP) & NewLine
|
|
|
|
'Floating point Number
|
|
Case vbSingle, vbDouble, vbCurrency, vbDecimal
|
|
|
|
'Output the key = value;
|
|
Data = Data & LevelTabs & Keys(i) & sp & ChrW$(ASSIGNOP) & sp & Format(Dict(Keys(i)), "###############################0.0#####") & "f" & ChrW$(TERMINATEOP) & NewLine
|
|
|
|
'Boolean as Number
|
|
Case vbBoolean
|
|
|
|
'Output the key = value;
|
|
Data = Data & LevelTabs & Keys(i) & sp & ChrW$(ASSIGNOP) & sp & CLng(Dict(Keys(i))) & ChrW$(TERMINATEOP) & NewLine
|
|
|
|
'Other (String)
|
|
Case Else
|
|
|
|
'Output the key = "value";
|
|
Data = Data & LevelTabs & Keys(i) & sp & ChrW$(ASSIGNOP) & sp & ChrW$(STRINGOP) & Escaped(Dict(Keys(i))) & ChrW$(STRINGOP) & ChrW$(TERMINATEOP) & NewLine
|
|
|
|
End Select
|
|
Next i
|
|
End If
|
|
|
|
'Return data
|
|
OutputDictionary = Data
|
|
End Function
|
|
|
|
Public Function ReadSetting(ByRef Setting As String, Optional ByRef Default As Variant, Optional ByVal Reference As Boolean)
|
|
|
|
'Check if setting exists
|
|
If Config.Exists(Setting) Then
|
|
|
|
'Check setting type
|
|
If VarType(Config(Setting)) = vbObject Then
|
|
|
|
'Check if we should return a reference
|
|
If Reference Then
|
|
|
|
'Return a reference
|
|
Set ReadSetting = Config(Setting)
|
|
Else
|
|
|
|
'Return the setting
|
|
Set ReadSetting = DeepCopy(Config(Setting))
|
|
End If
|
|
Else
|
|
|
|
'Return the setting
|
|
ReadSetting = Config(Setting)
|
|
End If
|
|
Else
|
|
|
|
'Return the default
|
|
If VarType(Default) = vbObject Then Set ReadSetting = Default Else ReadSetting = Default
|
|
End If
|
|
End Function
|
|
|
|
Public Sub RemoveSetting(ByRef Setting As String)
|
|
|
|
'Remove setting if exists
|
|
If Config.Exists(Setting) Then Config.Remove Setting
|
|
End Sub
|
|
|
|
Public Function Root(Optional ByVal Reference As Boolean) As Dictionary
|
|
|
|
'Check if we should return a reference
|
|
If Reference Then
|
|
|
|
'Return a reference
|
|
Set Root = Config
|
|
Else
|
|
|
|
'Return the setting
|
|
Set Root = DeepCopy(Config)
|
|
End If
|
|
End Function
|
|
|
|
Public Sub SaveConfiguration(ByRef Filename As String, Optional ByVal NewLine As String = vbCrLf, Optional ByVal Whitespace As Boolean = True)
|
|
Dim FB As Integer 'File buffer
|
|
Dim Data As String 'Data
|
|
|
|
|
|
'This reads a file and builds a new dictionary object
|
|
|
|
|
|
'Create data
|
|
Data = OutputDictionary(Config, 0, NewLine, Whitespace)
|
|
|
|
|
|
'Kill the file if exists
|
|
If Dir(Filename) <> "" Then Kill Filename
|
|
|
|
'Open the file to write
|
|
FB = FreeFile
|
|
Open Filename For Binary As #FB
|
|
|
|
'Write configuration data
|
|
Put #FB, 1, Data
|
|
|
|
'Close file
|
|
Close #FB
|
|
End Sub
|
|
|
|
Public Sub WriteSetting(ByRef Setting As String, ByRef Value As Variant, Optional ByVal Reference As Boolean)
|
|
Dim DictValue As Dictionary
|
|
|
|
'Check if the setting exists
|
|
If Config.Exists(Setting) Then
|
|
|
|
'Check type of value
|
|
If VarType(Value) = vbObject Then
|
|
|
|
'Check if we should apply referenced
|
|
If Reference Then
|
|
|
|
'Apply setting as reference
|
|
Set Config(Setting) = Value
|
|
Else
|
|
|
|
'Apply setting
|
|
Set DictValue = Value
|
|
Set Config(Setting) = DeepCopy(DictValue)
|
|
|
|
'Clean up
|
|
Set DictValue = Nothing
|
|
End If
|
|
Else
|
|
|
|
'Apply setting
|
|
Config(Setting) = Value
|
|
End If
|
|
Else
|
|
|
|
'Add setting
|
|
Config.Add Setting, Value
|
|
End If
|
|
End Sub
|