Chilkat Examples

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Tcl Web API Examples

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(Tcl) Facebook User Feed (Read Posts)

Demonstrates how to read the feed of posts (including status updates) and links published by this person, or by others on this person's profile. This introductory example gets the first few posts.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# This example assumes a previously obtained an access token
set oauth2 [new_CkOAuth2]

CkOAuth2_put_AccessToken $oauth2 "FACEBOOK-ACCESS-TOKEN"

set rest [new_CkRest]

# Connect to Facebook and send the following GET request:
set success [CkRest_Connect $rest "graph.facebook.com" 443 1 1]
if {[expr $success != 1]} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkOAuth2 $oauth2
    delete_CkRest $rest
    exit
}

# Provide the authentication credentials (i.e. the access key)
CkRest_SetAuthOAuth2 $rest $oauth2

# We could limit the number of posts.  The default limit is 25.
CkRest_AddQueryParam $rest "limit" "5"

set responseJson [CkRest_fullRequestNoBody $rest "GET" "/v2.7/me/feed"]
if {[expr [CkRest_get_LastMethodSuccess $rest] != 1]} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkOAuth2 $oauth2
    delete_CkRest $rest
    exit
}

set json [new_CkJsonObject]

CkJsonObject_put_EmitCompact $json 0
CkJsonObject_Load $json $responseJson

# Show the JSON in human-readable format.
puts [CkJsonObject_emit $json]

# A sample JSON response is shown below.  
# This is the code to parse the JSON response.

set dtime [new_CkDateTime]

set bLocalTime 1

# dt is a CkDtObj

set i 0
set numItems [CkJsonObject_SizeOfArray $json "data"]
while {[expr $i < $numItems]} {
    CkJsonObject_put_I $json $i
    puts "--- $i"
    set message [CkJsonObject_stringOf $json "data[i].message"]
    if {[expr [CkJsonObject_get_LastMethodSuccess $json] == 1]} then {
        puts "message: $message"
    }

    set story [CkJsonObject_stringOf $json "data[i].story"]
    if {[expr [CkJsonObject_get_LastMethodSuccess $json] == 1]} then {
        puts "story: $story"
    }

    puts "id: [CkJsonObject_stringOf $json data[i].id]"

    # We can load the created_time into a CkDateTime...
    [CkDateTime_SetFromTimestamp $dtime [CkJsonObject_stringOf $json "data[i].created_time"]]
    set dt [CkDateTime_GetDtObj $dtime $bLocalTime]
    puts [CkDtObj_get_Month $dt]/[CkDtObj_get_Day $dt]/[CkDtObj_get_Year $dt]  [CkDtObj_get_Hour $dt]:[CkDtObj_get_Minute $dt]
    delete_CkDtObj $dt

    set i [expr $i + 1]
}

# Finally, there are two paging URLs at the very bottom.  Those can be accessed as shown:
set prevUrl [CkJsonObject_stringOf $json "paging.previous"]
puts "URL for previous page: $prevUrl"

set nextUrl [CkJsonObject_stringOf $json "paging.next"]
puts "URL for next page: $nextUrl"

# -------------------------------------------------------------------
# This is a sample JSON response..
# { 
#   "data": [
#     { 
#       "message": "This is the first post.",
#       "created_time": "2016-09-28T14:36:45+0000",
#       "id": "12345678901234567_12345678900000001"
#     },
#     { 
#       "message": "This is the 2nd post.",
#       "created_time": "2016-09-27T03:26:12+0000",
#       "id": "12345678901234567_12345678900000002"
#     },
#     { 
#       "story": "John Doe shared Mary's post.",
#       "created_time": "2016-09-26T15:45:10+0000",
#       "id": "12345678901234567_12345678900000003"
#     },
#     { 
#       "message": "https:\/\/www.somewebsite.org\/?ID=8158",
#       "created_time": "2016-09-26T02:29:20+0000",
#       "id": "12345678901234567_12345678900000004"
#     },
#     { 
#       "message": "http:\/\/blog.somebody.com\/post\/123",
#       "created_time": "2016-09-26T02:02:56+0000",
#       "id": "12345678901234567_12345678900000005"
#     },
#     { 
#       "story": "John Doe shared Bill's photo.",
#       "created_time": "2016-09-25T15:32:09+0000",
#       "id": "12345678901234567_12345678900000006"
#     },
#     { 
#       "message": "Check this out...",
#       "story": "John Doe shared NPR Music's video.",
#       "created_time": "2016-09-25T14:54:52+0000",
#       "id": "12345678901234567_12345678900000007"
#     },
#     { 
#       "message": "Yet another post...",
#       "created_time": "2016-09-24T17:21:30+0000",
#       "id": "12345678901234567_12345678900000008"
#     },
#     { 
#       "message": "http:\/\/www.somewhere.com\/blahblahblah\/",
#       "created_time": "2016-09-23T22:20:29+0000",
#       "id": "12345678901234567_12345678900000009"
#     },
#     { 
#       "message": "At Lincoln marsh ...",
#       "story": "John Doe added 2 new photos.",
#       "created_time": "2016-09-19T02:00:43+0000",
#       "id": "12345678901234567_12345678900000010"
#     },
#     { 
#       "message": "I would've went for a swim had it not been for the sign",
#       "created_time": "2016-09-19T01:59:47+0000",
#       "id": "12345678901234567_12345678900000011"
#     },
#     { 
#       "story": "John Doe shared Steve's video.",
#       "created_time": "2016-09-17T22:00:02+0000",
#       "id": "12345678901234567_12345678900000012"
#     },
#     { 
#       "message": "Another sample message...",
#       "story": "John Doe shared XYZ's post.",
#       "created_time": "2016-09-17T14:13:16+0000",
#       "id": "12345678901234567_12345678900000013"
#     },
#     { 
#       "message": "Hello World!",
#       "created_time": "2016-09-16T23:17:13+0000",
#       "id": "12345678901234567_12345678900000014"
#     },
#     { 
#       "message": "https:\/\/www.youtube.com\/watch?v=xyz",
#       "created_time": "2016-09-15T04:13:02+0000",
#       "id": "12345678901234567_12345678900000015"
#     },
#     { 
#       "story": "John Doe shared Emily's photo.",
#       "created_time": "2016-09-14T16:37:10+0000",
#       "id": "12345678901234567_12345678900000016"
#     },
#     { 
#       "story": "John Doe shared Vincent's photo.",
#       "created_time": "2016-09-14T14:03:42+0000",
#       "id": "12345678901234567_12345678900000017"
#     },
#     { 
#       "message": "https:\/\/www.chilkatsoft.com\/",
#       "created_time": "2016-09-14T02:29:37+0000",
#       "id": "12345678901234567_12345678900000018"
#     },
#     { 
#       "message": "So cool!  Marcus jamming with this 16 year old kid...",
#       "created_time": "2016-09-13T17:04:53+0000",
#       "id": "12345678901234567_12345678900000019"
#     },
#     { 
#       "message": "Wow!",
#       "story": "John Doe shared Somebody's post.",
#       "created_time": "2016-09-13T14:11:18+0000",
#       "id": "12345678901234567_12345678900000020"
#     }
#   ],
#   "paging": { 
#     "previous": "https:\/\/graph.facebook.com\/v2.7\/12345678901234567\/feed?since=1475073405&limit=25&__paging_token=enc_abcT9x9GFabcTxvnyXZC0xnHZCrH2h4yjNZCZAUabcZAI9TyZBibwat6wCYiSFTxR4nSDZAkzaN8vIaEPmqrabc1QTIbGac&__previous=1",
#     "next": "https:\/\/graph.facebook.com\/v2.7\/12345678901234567\/feed?limit=25&until=1473426350&__paging_token=enc_AdDFWabcYtV5ob6lFO8LZAMhm7LKCxntawqqabcZALyC8WZB8Th2lON7HGuJRabzW6Ivfm93LORIw9NNBuHpob7abcjh"
#   }
# }
# 

delete_CkOAuth2 $oauth2
delete_CkRest $rest
delete_CkJsonObject $json
delete_CkDateTime $dtime

 

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