(Objective-C) OpenAI (ChatGTP) Retrieve File Content

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Demonstrate how to retrieve the content of a file from OpenAI. Shows how to download to a file, or instead download to a string in memory.

For more information, see https://platform.openai.com/docs/api-reference/files/retrieve-content

Chilkat Objective-C Library Downloads MAC OS X (Cocoa) Libs iOS Libs

#import <CkoHttp.h>
#import <NSString.h>
#import <CkoStringBuilder.h>

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

CkoHttp *http = [[CkoHttp alloc] init];
BOOL success;

// Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
// This is NOT a real key.  Change the "sk-vi...." to your own key.
http.AuthToken = @"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";

NSString *file_id = @"file-1H4vJq0H775gQVrjWY5jpp15";

// Download to local file.
NSString *url = @"https://api.openai.com/v1/files/{$file_id}/content";
[http SetUrlVar: @"file_id" value: file_id];

// Note: Free accounts are not able to download files.
// If using a free account, you'll receive an error response:  "To help mitigate abuse, downloading of fine-tune training files is disabled for free accounts."
success = [http Download: url saveToPath: @"c:/aaworkarea/mydata.jsonl"];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    NSLog(@"%@",@"Failed");
    return;
}

NSLog(@"%@",@"Downloaded OpenAI file to a local file.");

// Alternatively, download into a StringBuilder
CkoStringBuilder *sbData = [[CkoStringBuilder alloc] init];
success = [http DownloadSb: url charset: sbData sb: @"utf-8"];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    NSLog(@"%@",@"Failed");
    return;
}

NSLog(@"%@",@"Downloaded OpenAI file to a StringBuilder");

NSLog(@"%@",@"file content:");
NSLog(@"%@",[sbData GetAsString]);