When I run the command Get-Content test.json | ConvertFrom-J

Different behavior as ConvertFrom-Json with Get-Content about powershell-yaml HOT 3 CLOSED

cloudbase commented on September 14, 2024

Different behavior as ConvertFrom-Json with Get-Content

from powershell-yaml.

Comments (3)

gabriel-samfira commented on September 14, 2024

Hi Tim,

Due to the way PowerShell treats ValueFromPipeline, it is almost impossible to differentiate between:

$content = Get-Content test.txt
$content.GetType()

IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     True     Object[]                                 System.Array

and

$content = @("first line", "second line", "third line")

The -Raw flag gives you just one String element, so that works as expected.

For ConvertFrom-Yaml we could wait until we read all elements from a pipeline before we attempt to parse it, but it will break situations where you're sending in an array where each element is a valid yaml.

Will take a look at this more by the end of the week.

from powershell-yaml.

gabriel-samfira commented on September 14, 2024

Apologies for taking so long. Would you mind testing the latest commint on the master branch?

PS /tmp/powershell-yaml> cat ./test.yaml
---
id: m1
isRoot: true
delay: 0
text: Test

---
another: document
PS /tmp/powershell-yaml> gc ./test.yaml | ConvertFrom-Yaml

Name                           Value
----                           -----
isRoot                         True
id                             m1
text                           Test
delay                          0

PS /tmp/powershell-yaml> gc ./test.yaml | ConvertFrom-Yaml -AllDocuments

Name                           Value
----                           -----
isRoot                         True
id                             m1
text                           Test
delay                          0
another                        document

PS /tmp/powershell-yaml> gc -Raw ./test.yaml | ConvertFrom-Yaml         

Name                           Value
----                           -----
isRoot                         True
id                             m1
text                           Test
delay                          0

PS /tmp/powershell-yaml> gc -Raw ./test.yaml | ConvertFrom-Yaml -AllDocuments

Name                           Value
----                           -----
isRoot                         True
id                             m1
text                           Test
delay                          0
another                        document