ConvertTo-GzipString.md

external help file	Module Name	online version	schema
PSCompression-help.xml	PSCompression	https://github.com/santisq/PSCompression	2.0.0

ConvertTo-GzipString

SYNOPSIS

Creates a Gzip Base64 compressed string from a specified input string or strings.

SYNTAX

ConvertTo-GzipString
    [-InputObject] <String[]>
    [-Encoding <Encoding>]
    [-CompressionLevel <CompressionLevel>]
    [-AsByteStream]
    [-NoNewLine]
    [<CommonParameters>]

DESCRIPTION

The ConvertTo-GzipString cmdlet can compress input strings into Gzip Base64 encoded strings or raw bytes using the GzipStream Class. For expansion of Base64 Gzip strings, see ConvertFrom-GzipString.

EXAMPLES

Example 1: Compress strings to Gzip compressed Base64 encoded string

PS ..\pwsh> $strings = 'hello', 'world', '!'

# With positional binding
PS ..\pwsh> ConvertTo-GzipString $strings

H4sIAAAAAAAEAMtIzcnJ5+Uqzy/KSeHlUuTlAgBLr/K2EQAAAA==

# Or pipeline input, both work
PS ..\pwsh> $strings | ConvertTo-GzipString

H4sIAAAAAAAEAMtIzcnJ5+Uqzy/KSeHlUuTlAgBLr/K2EQAAAA==

Example 2: Create a Gzip compressed file from a string

PS ..\pwsh> 'hello world!' | ConvertTo-GzipString -AsByteStream |
    Compress-GzipArchive -DestinationPath .\files\file.gz

Demonstrates how -AsByteStream works on ConvertTo-GzipString, the cmdlet outputs a byte array that is received by Compress-GzipArchive and stored in a file. Note that the byte array is not enumerated.

Example 3: Compress strings using a specific Encoding

PS ..\pwsh> 'ñ' | ConvertTo-GzipString -Encoding ansi | ConvertFrom-GzipString
�

PS ..\pwsh> 'ñ' | ConvertTo-GzipString -Encoding utf8BOM | ConvertFrom-GzipString
ñ

The default Encoding is utf8NoBom.

Example 4: Compressing multiple files into one Gzip Base64 string

PS ..\pwsh> 0..10 | ForEach-Object {
    Invoke-RestMethod loripsum.net/api/10/long/plaintext -OutFile .\files\lorem$_.txt
}

# Check the total Length of the downloaded files
PS ..\pwsh> (Get-Content .\files\lorem*.txt | Measure-Object Length -Sum).Sum / 1kb
87.216796875

# Check the total Length after compression
PS ..\pwsh> (Get-Content .\files\lorem*.txt | ConvertTo-GzipString).Length / 1kb
36.94921875

PARAMETERS

-AsByteStream

Outputs the compressed byte array to the Success Stream.

Note

This parameter is meant to be used in combination with Compress-GzipArchive.

Type: SwitchParameter
Parameter Sets: (All)
Aliases: Raw

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

-CompressionLevel

Define the compression level that should be used. See CompressionLevel Enum for details.

Type: CompressionLevel
Parameter Sets: (All)
Aliases:
Accepted values: Optimal, Fastest, NoCompression, SmallestSize

Required: False
Position: Named
Default value: Optimal
Accept pipeline input: False
Accept wildcard characters: False

-Encoding

Determines the character encoding used when compressing the input strings.

Note

The default encoding is utf8NoBOM.

Type: Encoding
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: Utf8
Accept pipeline input: False
Accept wildcard characters: False

-InputObject

Specifies the input string or strings to compress.

Type: String[]
Parameter Sets: (All)
Aliases:

Required: True
Position: 0
Default value: None
Accept pipeline input: True (ByValue)
Accept wildcard characters: False

-NoNewLine

The encoded string representation of the input objects are concatenated to form the output. No new line character is added after each output string when this switch is used.

Type: SwitchParameter
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

CommonParameters

This cmdlet supports the common parameters. For more information, see about_CommonParameters.

INPUTS

String

You can pipe strings to this cmdlet.

OUTPUTS

String

By default, this cmdlet outputs a single string.

Byte[]

When the -AsByteStream switch is used this cmdlet outputs a byte array down the pipeline.