Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3/4TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

Tcl Examples

Web API Categories

ASN.1
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
Geolocation
Google APIs
Google Calendar
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text

HTTP
HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
REST
REST Misc
RSA Encryption
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Tcl) JSON Paths

Demonstrates using "Chilkat JSON Paths" to access parts of a JSON document, or to iterate over parts.

This example uses the following JSON document:

{
    "nestedArray" : [
			[
				[1,2,3],
				[4,5,6],
				[7,8,9,10]
			],
			[
				[11,12,13],
				[14,15,16],
				[17,18,19,20]
			],
			[
				[21,22,23],
				[24,25,26],
				[27,28,29,30],
				[31,32,33,34,35,36]
			]
		],

	"nestedObject" : {
		"aaa" : {
			"bb1" : {
				"cc1" : "c1Value",
				"cc2" : "c2Value",
				"cc3" : "c3Value"
			},
			"bb2" : {
				"dd1" : "d1Value",
				"dd2" : "d2Value",
				"dd3" : "d3Value"
			}
		}
	},

	"mixture" : {
		"arrayA" : [  
			{ "fruit": "apple", "animal": "horse", "job": "fireman", "colors": ["red","blue","green"] },
			{ "fruit": "pear", "animal": "plankton", "job": "waiter", "colors": ["yellow","orange","purple"] },
			{ "fruit": "kiwi", "animal": "echidna", "job": "astronaut", "colors": ["magenta","tan","pink"] }
			]
	},


        "name.with.dots" : { "grain" : "oats" }

	
}

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

set json [new_CkJsonObject]

CkJsonObject_put_EmitCompact $json 0

#  Assume the file contains the data as shown above..
set success [CkJsonObject_LoadFile $json "qa_data/json/pathSample.json"]
if {[expr $success != 1]} then {
    puts [CkJsonObject_lastErrorText $json]
    delete_CkJsonObject $json
    exit
}

#  First, let's get the value of "cc1"
#  The path to this value is: nestedObject.aaa.bb1.cc1
puts [CkJsonObject_stringOf $json nestedObject.aaa.bb1.cc1]

#  Now let's get number 18 from the nestedArray.
#  It is located at nestedArray[1][2][1]
#  (remember: Indexing is 0-based)
puts "This should be 18: [CkJsonObject_IntOf $json nestedArray[1][2][1]]"

#  We can do the same thing in a more roundabout way using the
#  I, J, and K properties.  (The I,J,K properties will be convenient
#  for iterating over arrays, as we'll see later.)
CkJsonObject_put_I $json 1
CkJsonObject_put_J $json 2
CkJsonObject_put_K $json 1
puts "This should be 18: [CkJsonObject_IntOf $json nestedArray[i][j][k]]"

#  Let's iterate over the array containing the numbers 17, 18, 19, 20.
#  First, use the SizeOfArray method to get the array size:
set sz [CkJsonObject_SizeOfArray $json "nestedArray[1][2]"]
#  The size should be 4.
puts "size of array = $sz (should equal 4)"

#  Now iterate...

for {set i 0} {$i <= [expr $sz - 1]} {incr i} {
    CkJsonObject_put_I $json $i
    puts [CkJsonObject_IntOf $json nestedArray[1][2][i]]
}

#  Let's use a triple-nested loop to iterate over the nestedArray:

#  szI should equal 1.
set szI [CkJsonObject_SizeOfArray $json "nestedArray"]
for {set i 0} {$i <= [expr $szI - 1]} {incr i} {
    CkJsonObject_put_I $json $i

    set szJ [CkJsonObject_SizeOfArray $json "nestedArray[i]"]
    for {set j 0} {$j <= [expr $szJ - 1]} {incr j} {
        CkJsonObject_put_J $json $j

        set szK [CkJsonObject_SizeOfArray $json "nestedArray[i][j]"]
        for {set k 0} {$k <= [expr $szK - 1]} {incr k} {
            CkJsonObject_put_K $json $k

            puts [CkJsonObject_IntOf $json nestedArray[i][j][k]]
        }
    }
}

#  Now let's examine how to navigate to JSON objects contained within JSON arrays.
#  This line of code gets the value "kiwi" contained within "mixture"
puts [CkJsonObject_stringOf $json mixture.arrayA[2].fruit]

#  This line of code gets the color "yellow"
puts [CkJsonObject_stringOf $json mixture.arrayA[1].colors[0]]

#  Getting an object at a path:
#  This gets the 2nd object in "arrayA"
# obj2 is a CkJsonObject
set obj2 [CkJsonObject_ObjectOf $json "mixture.arrayA[1]"]
#  This object's "animal" should be "plankton"
puts [CkJsonObject_stringOf $obj2 animal]

#  Note that paths are relative to the object, not the absolute root of the JSON document.
#  Starting from obj2, "purple" is at "colors[2]"
puts [CkJsonObject_stringOf $obj2 colors[2]]

delete_CkJsonObject $obj2

#  Getting an array at a path:
# This gets the array containing the colors red, green, blue:
# arr1 is a CkJsonArray
set arr1 [CkJsonObject_ArrayOf $json "mixture.array[0].colors"]
set szArr1 [CkJsonArray_get_Size $arr1]
for {set i 0} {$i <= [expr $szArr1 - 1]} {incr i} {
    puts "$i: [CkJsonArray_stringAt $arr1 $i]"
}
delete_CkJsonArray $arr1

#  The Chilkat JSON path uses ".", "[", and "]" chars for separators.  When a name
#  contains one of these chars, use double-quotes in the path:
puts [CkJsonObject_stringOf $json \"name.with.dots\".grain]

delete_CkJsonObject $json

 

© 2000-2019 Chilkat Software, Inc. All Rights Reserved.