C++ CTransaction::parseJson方法代码示例

//.........这里部分代码省略.........
			// Grab a page of data from the web api
			SFString thisPage = urlToString(url);

			// See if it's good data, if not, bail
			message = nextTokenClear(thisPage, '[');
			if (!message.Contains("{\"status\":\"1\",\"message\":\"OK\""))
			{
				if (message.Contains("{\"status\":\"0\",\"message\":\"No transactions found\",\"result\":"))
					message = "No transactions were found for address '" + theAccount.addr + "'. Is it correct?";
				return options.cmdFile;
			}

			contents += thisPage;

			SFInt32 nRecords = countOf('}',thisPage)-1;
			nRead += nRecords;
			outErr << "\tDownloaded " << nRead << " potentially new transactions." << (isTesting?"\n":"\r");

			// If we got a full page, there are more to come
			done = (nRecords < options.pageSize);
			if (!done)
				page++;

			// Etherscan.io doesn't want more than five pages per second, so sleep for a second
			if (++nRequests==4)
			{
				SFos::sleep(1.0);
				nRequests=0;
			}

			// Make sure we don't spin forever
			if (nRead >= options.maxTransactions)
				done=TRUE;
		}

		SFInt32 minBlock=0,maxBlock=0;
		findBlockRange(contents, minBlock, maxBlock);
		outErr << "\n\tDownload contains blocks from " << minBlock << " to " << maxBlock << "\n";

		// Keep track of which last full page we've read
		theAccount.lastPage = page;
		theAccount.pageSize = options.pageSize;

		// pre allocate the array
		theAccount.transactions.Grow(nRead);

		SFInt32 lastBlock=0;
		char *p = cleanUpJson((char *)(const char*)contents);
		while (p && *p)
		{
			CTransaction trans;SFInt32 nFields=0;
			p = trans.parseJson(p,nFields);
			if (nFields)
			{
				SFInt32 transBlock = trans.blockNumber;
				if (transBlock > theAccount.lastBlock) // add the new transaction if it's in a new block
				{
					theAccount.transactions[nextRecord++] = trans;
					lastBlock = transBlock;
					if (!(++nNewBlocks%REP_FREQ))
					{
						outErr << "\tFound new transaction at block " << transBlock << ". Importing..." << (isTesting?"\n":"\r");
						outErr.Flush();
					}
				}
			}
		}
		if (!isTesting && nNewBlocks) { outErr << "\tFound new transaction at block " << lastBlock << ". Importing...\n"; outErr.Flush(); }
		theAccount.lastBlock = lastBlock;

		// Write the data if we got new data
		SFInt32 newRecords = (theAccount.transactions.getCount() - origCount);
		if (newRecords)
		{
			outErr << "\tWriting " << newRecords << " new records to cache\n";
			SFArchive archive(FALSE, NO_SCHEMA);
			if (archive.Lock(cacheFilename, binaryWriteCreate, LOCK_CREATE))
			{
				theAccount.transactions.Sort(sortTransactionsForWrite);
				theAccount.Serialize(archive);
				archive.Close();

			} else
			{
				message = "Could not open file: '" + cacheFilename + "'\n";
				return options.cmdFile;
			}
		}
	}

	if (!isTesting)
	{
		double stop = vrNow();
		double timeSpent = stop-start;
		fprintf(stderr, "\tLoaded %ld total records in %f seconds\n", theAccount.transactions.getCount(), timeSpent);
		fflush(stderr);
	}

	return (options.cmdFile || theAccount.transactions.getCount()>0);
}