TChilkatStringBuilder Delphi ActiveX Reference Documentation

TChilkatStringBuilder

A simple class for building strings. (Represents a mutable string of characters.)

Note: This class was introduced in Chilkat v9.5.0.58.

Importing the Chilkat ActiveX into Delphi

Important: Whenever upgrading to a new version of Chilkat, make sure to re-imported ActiveX DLL into Delphi to regenerate the files described below.

Two things are required to use an ActiveX in Delphi:

  1. The ActiveX DLL needs to be registered via regsvr32 on the system where the Delphi application runs. See How To Register ActiveX DLLs for detailed information.
  2. The ActiveX component needs to be "imported". Use the Delphi Import Component Wizard to import the Chilkat type library. This creates the following files: Chilkat_v9_5_0_TLB.pas and Chilkat_v9_5_0_TLB.dcr. The Chilkat_v9_5_0_TLB.pas should be added to your project.

To import the Chilkat type library, do the following:

  1. In the Delphi RAD Studio, select the menu item "Component" --> "Import a Type Library".
  2. Find "Chilkat ActiveX v9.5.0" in the list and select it. This will only appear in the list if the ChilkatAx-9.5.0-win32.dll (or ChilkatAx-9.5.0-x64.dll) has been registered w/ regsvr32.
  3. Check the "Generate Component Wrappers" checkbox.
  4. Select a directory where the unit files (.pas and .dcr) will be generated.
  5. Select "Create Unit" and then "Finish".
  6. Add the .pas to your Delphi project.

To use a Chilkat ActiveX object in your Delphi code, add "Chilkat_v9_5_0_TLB" to the "uses" statement. For example:

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB;

Object Creation

var
obj: TChilkatStringBuilder;
...
begin
obj := TChilkatStringBuilder.Create(Self);
...
// When finished, free the object instance.
obj.Free();

Properties

property IntValue: Integer

Introduced in version 9.5.0.58

Returns the content of the string converted to an integer.

property LastMethodSuccess: Integer

Indicate whether the last method call succeeded or failed. A value of 1 indicates success, a value of 0 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 = 1 and failure = 0.
  • 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 1. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

property Length: Integer readonly

Introduced in version 9.5.0.58

The number of characters of the string contained within this instance.

Methods

function Append(value: WideString): Integer;

Introduced in version 9.5.0.58

Appends a copy of the specified string to this instance.

Returns 1 for success, 0 for failure.

function AppendBd(binData: TChilkatBinData; charset: WideString; offset: Integer; numBytes: Integer): Integer;

Introduced in version 9.5.0.64

Appends the contents of binData. The charset specifies the character encoding of the bytes contained in binData. The charset can be any of the supported encodings listed at Chilkat Supported Character Encodings. To append the entire contents of binData, set offset and numBytes equal to zero. To append a range of binData, set the offset and numBytes to specify the range.

Returns 1 for success, 0 for failure.

function AppendEncoded(binaryData: OleVariant; encoding: WideString): Integer;

Introduced in version 9.5.0.58

Appends binary data using the encoding specified by encoding, such as "base64", "hex", etc.

Returns 1 for success, 0 for failure.

Hash the Contents of a File (SHA256 and other hash algorithms)

function AppendInt(value: Integer): Integer;

Introduced in version 9.5.0.58

Appends the string representation of a specified 32-bit signed integer to this instance.

Returns 1 for success, 0 for failure.

function AppendLine(value: WideString; crlf: Integer): Integer;

Introduced in version 9.5.0.65

Appends the value followed by a CRLF or LF to the end of the curent StringBuilder object. If crlf is 1, then a CRLF line ending is used. Otherwise a LF line ending is used.

Returns 1 for success, 0 for failure.

function AppendSb(sb: TChilkatStringBuilder): Integer;

Introduced in version 9.5.0.62

Appends the contents of another StringBuilder to this instance.

Returns 1 for success, 0 for failure.

procedure Clear();

Introduced in version 9.5.0.58

Removes all characters from the current StringBuilder instance.

function Contains(str: WideString; caseSensitive: Integer): Integer;

Introduced in version 9.5.0.58

Returns 1 if the str is contained within this object. For case sensitive matching, set caseSensitive equal to 1. For case-insensitive, set caseSensitive equal to 0.

function ContainsWord(word: WideString; caseSensitive: Integer): Integer;

Introduced in version 9.5.0.69

Returns 1 if the word is contained within this object, but only if it is a whole word. This method is limited to finding whole words in strings that only contains characters in the Latin1 charset (i.e. iso-8859-1 or Windows-1252). A whole word can only contain alphanumeric chars where the alpha chars are restricted to those of the Latin1 alpha chars. (The underscore character is also considered part of a word.)

For case sensitive matching, set caseSensitive equal to 1. For case-insensitive, set caseSensitive equal to 0.

function ContentsEqual(str: WideString; caseSensitive: Integer): Integer;

Introduced in version 9.5.0.62

Returns 1 if the contents of this object equals the str. Returns 0 if unequal. For case insensitive equality, set caseSensitive equal to 0.

function ContentsEqualSb(sb: TChilkatStringBuilder; caseSensitive: Integer): Integer;

Introduced in version 9.5.0.62

Returns 1 if the contents of this object equals the sb. Returns 0 if unequal. For case insensitive equality, set caseSensitive equal to 0.

function Decode(encoding: WideString; charset: WideString): Integer;

Introduced in version 9.5.0.62

Decodes and replaces the contents with the decoded string. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Note: This method can only be called if the encoded content decodes to a string. The charset indicates the charset to be used in intepreting the decoded bytes. For example, the charset can be "utf-8", "utf-16", "iso-8859-1", "shift_JIS", etc.

Returns 1 for success, 0 for failure.

JSON Escape and Unescape a String

function Encode(encoding: WideString; charset: WideString): Integer;

Introduced in version 9.5.0.62

Encodes to base64, hex, quoted-printable, URL encoding, etc. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Returns 1 for success, 0 for failure.

Supported Binary Encodings

StringBuilder Encode

UN/EDIFACT Syntax Level A Encoding/Decoding

JSON Escape and Unescape a String

function EndsWith(substr: WideString; caseSensitive: Integer): Integer;

Introduced in version 9.5.0.62

Returns 1 if the string ends with substr. Otherwise returns 0. The comparison is case sensitive if caseSensitive is 1, and case insensitive if caseSensitive is 0.

function EntityDecode(): Integer;

Introduced in version 9.5.0.62

Decodes HTML entities. See HTML entities for more information about HTML entities.

Returns 1 for success, 0 for failure.

StringBuilder EntityDecode

function GetAfterBetween(searchAfter: WideString; beginMark: WideString; endMark: WideString): WideString;

Introduced in version 9.5.0.62

Begin searching after the 1st occurrence of searchAfter is found, and then return the substring found between the next occurrence of beginMark and the next occurrence of endMark.

Returns a zero-length WideString on failure

StringBuilder GetAfterBetween

Implement Preprocessor #include with StringBuilder

function GetAsString(): WideString;

Introduced in version 9.5.0.58

Returns the contents as a string.

Returns a zero-length WideString on failure

function GetBetween(beginMark: WideString; endMark: WideString): WideString;

Introduced in version 9.5.0.62

Returns the substring found between the 1st occurrence of beginMark and the next occurrence of endMark.

Returns a zero-length WideString on failure

StringBuilder GetBetween

function GetDecoded(encoding: WideString): OleVariant;

Introduced in version 9.5.0.62

Decodes and returns the decoded bytes. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

function GetEncoded(encoding: WideString; charset: WideString): WideString;

Introduced in version 9.5.0.62

Returns the string contents encoded in an encoding such as base64, hex, quoted-printable, or URL-encoding. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Note: The Encode method modifies the content of this object. The GetEncoded method leaves this object's content unmodified.

Returns a zero-length WideString on failure

Supported Binary Encodings

StringBuilder GetEncoded

StringBuilder Encode Charset

function GetNth(index: Integer; delimiterChar: WideString; exceptDoubleQuoted: Integer; exceptEscaped: Integer): WideString;

Introduced in version 9.5.0.62

Returns the Nth substring in string that is a list delimted by delimiterChar. The first substring is at index 0. If exceptDoubleQuoted is 1, then the delimiter char found between double quotes is not treated as a delimiter. If exceptEscaped is 1, then an escaped (with a backslash) delimiter char is not treated as a delimiter.

Returns a zero-length WideString on failure

StringBuilder GetNth

function LastNLines(numLines: Integer; bCrlf: Integer): WideString;

Introduced in version 9.5.0.62

Returns the last N lines of the text. If fewer than numLines lines exists, then all of the text is returned. If bCrlf is 1, then the line endings of the returned string are converted to CRLF, otherwise the line endings are converted to LF-only.

Returns a zero-length WideString on failure

Get the Last N Lines of a StringBuilder

function LoadFile(path: WideString; charset: WideString): Integer;

Introduced in version 9.5.0.62

Loads the contents of a file.

Returns 1 for success, 0 for failure.

function Prepend(value: WideString): Integer;

Introduced in version 9.5.0.61

Prepends a copy of the specified string to this instance.

Returns 1 for success, 0 for failure.

function PunyDecode(): Integer;

Introduced in version 9.5.0.71

In-place decodes the string from punycode.

Returns 1 for success, 0 for failure.

function PunyEncode(): Integer;

Introduced in version 9.5.0.71

In-place encodes the string to punycode.

Returns 1 for success, 0 for failure.

function Replace(value: WideString; replacement: WideString): Integer;

Introduced in version 9.5.0.58

Replaces all occurrences of a specified string in this instance with another specified string. Returns the number of replacements.

function ReplaceAllBetween(beginMark: WideString; endMark: WideString; replacement: WideString; replaceMarks: Integer): Integer;

Introduced in version 9.5.0.64

Replaces the first occurrence of the content found between beginMark and endMark with replacement. The beginMark and endMark are included in what is replaced if replaceMarks is 1.

Returns 1 for success, 0 for failure.

Implement Preprocessor #include with StringBuilder

function ReplaceBetween(beginMark: WideString; endMark: WideString; value: WideString; replacement: WideString): Integer;

Introduced in version 9.5.0.62

Replaces all occurrences of value with replacement, but only where value is found between beginMark and endMark. Returns the number of replacements made.

StringBuilder ReplaceBetween

function ReplaceI(value: WideString; replacement: Integer): Integer;

Introduced in version 9.5.0.67

Replaces all occurrences of value with the decimal integer replacement. Returns the number of replacements.

function ReplaceWord(value: WideString; replacement: WideString): Integer;

Introduced in version 9.5.0.62

Replaces all word occurrences of a specified string in this instance with another specified string. Returns the number of replacements made.

Important: This method is limited to replacing whole words in strings that only contains characters in the Latin1 charset (i.e. iso-8859-1 or Windows-1252). A whole word can only contain alphanumeric chars where the alpha chars are restricted to those of the Latin1 alpha chars. (The underscore character is also considered part of a word.)

StringBuilder ReplaceWord

procedure SecureClear();

Introduced in version 9.5.0.67

Removes all characters from the current StringBuilder instance, and write zero bytes to the allocated memory before deallocating.

function SetNth(index: Integer; value: WideString; delimiterChar: WideString; exceptDoubleQuoted: Integer; exceptEscaped: Integer): Integer;

Introduced in version 9.5.0.62

Sets the Nth substring in string in a list delimted by delimiterChar. The first substring is at index 0. If exceptDoubleQuoted is 1, then the delimiter char found between double quotes is not treated as a delimiter. If exceptEscaped is 1, then an escaped (with a backslash) delimiter char is not treated as a delimiter.

Returns 1 for success, 0 for failure.

StringBuilder SetNth

function SetString(value: WideString): Integer;

Introduced in version 9.5.0.61

Sets this instance to a copy of the specified string.

Returns 1 for success, 0 for failure.

function StartsWith(substr: WideString; caseSensitive: Integer): Integer;

Introduced in version 9.5.0.62

Returns 1 if the string starts with substr. Otherwise returns 0. The comparison is case sensitive if caseSensitive is 1, and case insensitive if caseSensitive is 0.

function ToCRLF(): Integer;

Introduced in version 9.5.0.62

Converts line endings to CRLF (Windows) format.

Returns 1 for success, 0 for failure.

function ToLF(): Integer;

Introduced in version 9.5.0.62

Converts line endings to LF-only (UNIX) format.

Returns 1 for success, 0 for failure.

function ToLowercase(): Integer;

Introduced in version 9.5.0.62

Converts the contents to lowercase.

Returns 1 for success, 0 for failure.

function ToUppercase(): Integer;

Introduced in version 9.5.0.62

Converts the contents to uppercase.

Returns 1 for success, 0 for failure.

function Trim(): Integer;

Introduced in version 9.5.0.62

Trims whitespace from both ends of the string.

Returns 1 for success, 0 for failure.

function TrimInsideSpaces(): Integer;

Introduced in version 9.5.0.62

Replaces all tabs, CR's, and LF's, with SPACE chars, and removes extra SPACE's so there are no occurances of more than one SPACE char in a row.

Returns 1 for success, 0 for failure.

function WriteFile(path: WideString; charset: WideString; emitBom: Integer): Integer;

Introduced in version 9.5.0.62

Writes the contents to a file. If emitBom is 1, then the BOM (also known as a preamble), is emitted for charsets that define a BOM (such as utf-8, utf-16, utf-32, etc.)

Returns 1 for success, 0 for failure.