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(Unicode C) Xero Get Attachment (Download a Xero Attachment)Demonstrates how to get the content of an attachment in Xero. Note: This example requires Chilkat v9.5.0.64 or greater.
#include <C_CkRestW.h> #include <C_CkStringBuilderW.h> #include <C_CkXmlW.h> #include <C_CkBinDataW.h> void ChilkatSample(void) { HCkRestW rest; BOOL success; const wchar_t *endPoint; const wchar_t *receiptID; HCkStringBuilderW sbPath; int numReplaced; const wchar_t *responseXml; HCkXmlW xml; int numRecords; HCkStringBuilderW sbSaveFilePath; HCkStringBuilderW sbAttachmentPath; HCkBinDataW attachmentData; int i; const wchar_t *attachmentID; const wchar_t *filename; int statusCode; const wchar_t *responseBody; // Note: Requires Chilkat v9.5.0.64 or greater. // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. rest = CkRestW_Create(); // Before sending REST API calls, the REST object needs to be // initialized for OAuth1. // See Xero 2-Legged OAuth1 Setup for sample code. // Assuming the REST object's OAuth1 authenticator is setup, and the initial // connection was made, we may now send REST HTTP requests.. // -------------------------------------------------------------- // First get a list of attachments for a given document (in this case a Receipt). endPoint = L"Receipts"; receiptID = L"c4f40e59-c390-0001-caff-ce731c707d00"; sbPath = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbPath,L"/api.xro/2.0/{Endpoint}/{Guid}/Attachments/"); numReplaced = CkStringBuilderW_Replace(sbPath,L"{Endpoint}",endPoint); numReplaced = CkStringBuilderW_Replace(sbPath,L"{Guid}",receiptID); responseXml = CkRestW_fullRequestNoBody(rest,L"GET",CkStringBuilderW_getAsString(sbPath)); if (CkRestW_getLastMethodSuccess(rest) != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); return; } // A 200 response is expected for actual success. if (CkRestW_getResponseStatusCode(rest) != 200) { wprintf(L"%s\n",responseXml); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); return; } // Examine the response. wprintf(L"%s\n",responseXml); // A sample response looks like this: // <Response xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> // <Id>b235646f-34ac-4b15-90ce-d63267f7cd33</Id> // <Status>OK</Status> // <ProviderName>ChilkatPrivate</ProviderName> // <DateTimeUTC>2016-11-11T14:32:17.0908971Z</DateTimeUTC> // <Attachments> // <Attachment> // <AttachmentID>0edcddc8-325f-40c7-b950-8c71f14afc7c</AttachmentID> // <FileName>penguins.jpg</FileName> // <Url>http://api.xero.com/api.xro/2.0/Receipts/c4f40e59-c390-0001-caff-ce731c707d00/Attachments/penguins.jpg</Url> // <MimeType>image/jpg</MimeType> // <ContentLength>777835</ContentLength> // </Attachment> // <Attachment> // <AttachmentID>0adffdc8-325f-65c7-b950-4391f14af908</AttachmentID> // <FileName>starfish.jpg</FileName> // <Url>http://api.xero.com/api.xro/2.0/Receipts/c4f40e59-c390-0001-caff-ce731c707d00/Attachments/starfish.jpg</Url> // <MimeType>image/jpg</MimeType> // <ContentLength>24537</ContentLength> // </Attachment> // </Attachments> // </Response> xml = CkXmlW_Create(); CkXmlW_LoadXml(xml,responseXml); // Iterate over the attachments and download each. numRecords = CkXmlW_NumChildrenAt(xml,L"Attachments"); wprintf(L"Number of Attachments = %d\n",numRecords); sbSaveFilePath = CkStringBuilderW_Create(); sbAttachmentPath = CkStringBuilderW_Create(); attachmentData = CkBinDataW_Create(); i = 0; while (i < numRecords) { CkXmlW_putI(xml,i); attachmentID = CkXmlW_getChildContent(xml,L"Attachments|Attachment[i]|AttachmentID"); filename = CkXmlW_getChildContent(xml,L"Attachments|Attachment[i]|FileName"); wprintf(L"AttachmentID: %s\n",attachmentID); wprintf(L"Filename: %s\n",filename); wprintf(L"----\n"); // Download this attachment. // First build the path for this particular attachment by appending the FileName to the path used to get the list of attachments. CkStringBuilderW_Clear(sbAttachmentPath); CkStringBuilderW_AppendSb(sbAttachmentPath,sbPath); CkStringBuilderW_Append(sbAttachmentPath,filename); // Send the GET request in one call, and then get the response in the next two. success = CkRestW_SendReqNoBody(rest,L"GET",CkStringBuilderW_getAsString(sbAttachmentPath)); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); CkXmlW_Dispose(xml); CkStringBuilderW_Dispose(sbSaveFilePath); CkStringBuilderW_Dispose(sbAttachmentPath); CkBinDataW_Dispose(attachmentData); return; } // Get the response header. If it's not a 200 success status code, then the response body does NOT contain // the attachment data. statusCode = CkRestW_ReadResponseHeader(rest); if (statusCode == -1) { // We didn't get any response.. wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); CkXmlW_Dispose(xml); CkStringBuilderW_Dispose(sbSaveFilePath); CkStringBuilderW_Dispose(sbAttachmentPath); CkBinDataW_Dispose(attachmentData); return; } if (statusCode != 200) { wprintf(L"Response Status: %d\n",statusCode); responseBody = CkRestW_readRespBodyString(rest); if (CkRestW_getLastMethodSuccess(rest) != TRUE) { wprintf(L"Failed to read the response body.\n"); } else { wprintf(L"%s\n",responseBody); } wprintf(L"Failed.\n"); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); CkXmlW_Dispose(xml); CkStringBuilderW_Dispose(sbSaveFilePath); CkStringBuilderW_Dispose(sbAttachmentPath); CkBinDataW_Dispose(attachmentData); return; } // OK, the response header indicates the attachment content is forthcoming... // There are a few ways to get the response body. If it is a very large attachment, it can be streamed directly // to a file. We'll assume it's not, so we'll get the response into a BinData object, and then save it to a file. CkBinDataW_Clear(attachmentData); success = CkRestW_ReadRespBd(rest,attachmentData); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); CkXmlW_Dispose(xml); CkStringBuilderW_Dispose(sbSaveFilePath); CkStringBuilderW_Dispose(sbAttachmentPath); CkBinDataW_Dispose(attachmentData); return; } // Save the data to the file. CkStringBuilderW_SetString(sbSaveFilePath,L"qa_output/"); CkStringBuilderW_Append(sbSaveFilePath,filename); success = CkBinDataW_WriteFile(attachmentData,CkStringBuilderW_getAsString(sbSaveFilePath)); if (success != TRUE) { wprintf(L"Failed to save to output file.\n"); } else { wprintf(L"Saved to %s\n",CkStringBuilderW_getAsString(sbSaveFilePath)); } i = i + 1; } CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); CkXmlW_Dispose(xml); CkStringBuilderW_Dispose(sbSaveFilePath); CkStringBuilderW_Dispose(sbAttachmentPath); CkBinDataW_Dispose(attachmentData); } |
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