StringArray Lianja Reference Documentation

StringArray

Class/object for managing and manipulating collections of strings. Contains an ordered collection of strings.

Object Creation

loObject = createobject("CkStringArray")

Properties

Count As Numeric (read-only)

The number of strings contained within the object's internal array (i.e. ordered collection).

Important: This is an object that contains a collection of strings. Although the class/object name includes the word "Array", it should not be confused with an array in the sense of the primitive array type used in a given programming language.

Crlf As Boolean

If .T., strings are always automatically converted to use CRLF line endings. If .F., strings are automatically converted to use bare LF line endings.

DebugLogFilePath As Character

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

LastErrorHtml As Character (read-only)

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

LastErrorText As Character (read-only)

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

LastErrorXml As Character (read-only)

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

LastMethodSuccess As Boolean

Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of .T. indicates success, a value of .F. indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = .T. and failure = .F..
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to .T.. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

Length As Numeric (read-only)

The number of strings contained within the internal collection. (Identical to the Count property.)

Trim As Boolean

If .T., whitespace, including carriage-returns and linefeeds, are automatically removed from the beginning and end of a string when added to the collection.

Unique As Boolean

If .T., then duplicates are not allowed. When an attempt is made to insert a string that already exists, the duplicate insertion is silently suppressed and no error is returned. The default value is .F..

VerboseLogging As Boolean

If set to .T., then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is .F.. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

Version As Character (read-only)

Version of the component/library, such as "9.4.1.42"

Methods

Append(str As Character) As Boolean

Appends a string to the end of the internal ordered collection.

Returns .T. for success, .F. for failure.

AppendSerialized(encodedStr As Character) As Boolean

Appends multiple strings to the end of the internal ordered collection. The encodedStr is what is returned from the Serialize method (see below).

Returns .T. for success, .F. for failure.

Clear()

Remove all strings from the internal collection.

Contains(str As Character) As Boolean

Returns .T. if the string is present in the internal collection. The string comparisons are case sensitive.

Find(findStr As Character, startIndex As Numeric) As Numeric

Finds the index of the first string equal to findStr. The search begins at startIndex. If the string is not found, -1 is returned. The first string in the array is at index 0.

FindFirstMatch(matchPattern As Character, startIndex As Numeric) As Numeric

Finds the first string that matches the matchPattern. The search begins at startIndex. If the string is not found, -1 is returned. The first string in the array is at index 0.

The matchPattern may contain zero or more asterisk chars, each of which matches 0 or more of any character.

GetString(index As Numeric) As Character

Returns the string at an indexed location within the internal collection. The first string is located at index 0.

Returns .T. for success, .F. for failure.

GetStringLen(index As Numeric) As Numeric

Returns Nth string's length, in characters. The first string is located at index 0.

InsertAt(index As Numeric, str As Character)

Inserts a string into the internal collection at a specified index. Using index 0 will insert at the beginning.

LastString() As Character

Returns the last string in the internal collection.

Returns .T. for success, .F. for failure.

LoadFromFile(path As Character) As Boolean

Loads strings from a file (one per line) into the internal collection. It is assumed the file contains ANSI strings. To load from a file containing non-ANSI strings (such as utf-8), call LoadFromFile2 instead.

Returns .T. for success, .F. for failure.

LoadFromFile2(path As Character, charset As Character) As Boolean

Loads strings from a file (one per line) into the internal collection. The charset specifies the character encoding (such as utf-8) of the strings contained in the file.

Returns .T. for success, .F. for failure.

LoadFromText(str As Character)

Loads strings from an in-memory string (one per line) into the internal collection.

LoadTaskResult(task As CkTask) As Boolean

Introduced in version 9.5.0.52

Loads the string collection from a completed asynchronous task.

Returns .T. for success, .F. for failure.

Pop() As Character

Returns the last string and removes it from the internal collection.

Returns .T. for success, .F. for failure.

Prepend(str As Character)

Adds a string to the beginning of the internal collection.

Remove(str As Character)

Removes all strings equal to the string argument from the internal collection.

RemoveAt(index As Numeric) As Boolean

Removes the string at a particular index.

ReplaceAt(index As Numeric, str As Character)

Introduced in version 9.5.0.52

Replaces the string at a specified index.

SaveLastError(path As Character) As Boolean

Saves the last-error information (the contents of LastErrorXml) to an XML formatted file.

Returns .T. for success, .F. for failure.

SaveNthToFile(index As Numeric, saveToPath As Character) As Boolean

Saves the Nth string in the collection to a file.

Returns .T. for success, .F. for failure.

SaveToFile(path As Character) As Boolean

Saves the collection of strings to a file, one string per line. Strings are saved using the ANSI charset. (Call SaveToFile2 to specify a charset, such as "utf-8")

Returns .T. for success, .F. for failure.

SaveToFile2(saveToPath As Character, charset As Character) As Boolean

Saves the collection of strings to a file, one string per line. Strings are saved using the specified charset.

Returns .T. for success, .F. for failure.

SaveToText() As Character

Writes the collection of strings to a single string, one per line (separated by CRLF line endings).

Returns .T. for success, .F. for failure.

Serialize() As Character

Returns an string which is an encoded representation of all the strings in the collection. The string collection can be re-created by calling the AppendSerialized method.

Returns .T. for success, .F. for failure.

Sort(ascending As Boolean)

Sorts the strings in the collection in ascending or descending order. To sort in ascending order, set ascending to .T., otherwise set ascending equal to .F..

SplitAndAppend(str As Character, boundary As Character)

Splits a string at a character or substring boundary and adds each resulting string to the internal collection.

Subtract(stringArrayObj As CkStringArray)

Subtracts the strings contained within stringArrayObj from the caller's internal collection.

Union(stringArrayObj As CkStringArray)

Performs the union set-operator. The result is that the caller will have a string collection that is the union of itself and stringArrayObj.