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(Unicode C++) Backblaze S3 List Bucket ObjectsSee more Backblaze S3 ExamplesDemonstrates how to list the objects in a bucket. The Chilkat S3 functions in the HTTP class are compatible with the Backblaze service. However, because of some specific issues, Chilkat v9.5.0.89 or later is needed.
#include <CkHttpW.h> #include <CkXmlW.h> void ChilkatSample(void) { // This example assumes the Chilkat HTTP API to have been previously unlocked. // See Global Unlock Sample for sample code. CkHttpW http; // keyID = Access Key ID or Access Key http.put_AwsAccessKey(L"access-key"); // applicationKey = Secret Access Key or Secret Key http.put_AwsSecretKey(L"secret-key"); // Region is the 2nd part of your S3 Endpoint http.put_AwsEndpoint(L"s3.us-west-002.backblazeb2.com"); const wchar_t *bucketName = L"chilkat-test"; const wchar_t *strXml = http.s3_ListBucketObjects(bucketName); if (http.get_LastMethodSuccess() != true) { wprintf(L"%s\n",http.lastErrorText()); return; } wprintf(L"Response status code = %d\n",http.get_LastStatus()); CkXmlW xml; bool success = xml.LoadXml(strXml); if (success != true) { wprintf(L"%s\n",xml.lastErrorText()); return; } // If the response status code was not 200, then the XML response is not a // listing of objects, but instead contains error information. if (http.get_LastStatus() != 200) { wprintf(L"%s\n",xml.getXml()); wprintf(L"Failed.\n"); return; } // A sample response is shown below. wprintf(L"%s\n",xml.getXml()); wprintf(L"----\n"); // Use this online tool to generate parsing code from sample XML: // Generate Parsing Code from XML // <?xml version="1.0" encoding="UTF-8" standalone="yes"?> // <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/"> // <Contents> // <ETag>"303fb46cf341094fef6274b7789cd6aa"</ETag> // <Key>orchard.json</Key> // <LastModified>2021-10-30T14:45:52.000Z</LastModified> // <Owner> // <ID>f2ebbc5f792c</ID> // <DisplayName/> // </Owner> // <Size>22</Size> // <StorageClass>STANDARD</StorageClass> // </Contents> // <Contents> // <ETag>"a8551f0a5437f43a796fca7623ee9232"</ETag> // <Key>seahorse.jpg</Key> // <LastModified>2021-10-30T14:38:53.000Z</LastModified> // <Owner> // <ID>f2ebbc5f792c</ID> // <DisplayName/> // </Owner> // <Size>24388</Size> // <StorageClass>STANDARD</StorageClass> // </Contents> // <IsTruncated>false</IsTruncated> // <MaxKeys>1000</MaxKeys> // <Name>chilkat-test</Name> // <Prefix/> // <Marker/> // </ListBucketResult> const wchar_t *ETag = 0; const wchar_t *Key = 0; const wchar_t *LastModified = 0; const wchar_t *ID = 0; const wchar_t *SizeDecimalStr = 0; const wchar_t *StorageClass = 0; const wchar_t *ListBucketResult_xmlns = xml.getAttrValue(L"xmlns"); int i = 0; int count_i = xml.NumChildrenHavingTag(L"Contents"); while (i < count_i) { xml.put_I(i); ETag = xml.getChildContent(L"Contents[i]|ETag"); Key = xml.getChildContent(L"Contents[i]|Key"); LastModified = xml.getChildContent(L"Contents[i]|LastModified"); ID = xml.getChildContent(L"Contents[i]|Owner|ID"); SizeDecimalStr = xml.getChildContent(L"Contents[i]|Size"); StorageClass = xml.getChildContent(L"Contents[i]|StorageClass"); i = i + 1; } const wchar_t *IsTruncated = xml.getChildContent(L"IsTruncated"); int MaxKeys = xml.GetChildIntValue(L"MaxKeys"); const wchar_t *Name = xml.getChildContent(L"Name"); } |
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