// 读入一条记录
// return:
// -1 出错
// 0 正常
// 1 结束。此次API不返回有效的记录
public int ReadOneRecord(out UploadRecord record,
out string strError)
{
strError = "";
record = null;
int nRet = 0;
this.Index++;
if (this.FileType == ExportFileType.XmlFile)
{
string strXml = "";
string strPath = "";
string strTimestamp = "";
// 读入一条XML记录
// return:
// -1 出错
// 0 正常
// 1 结束。此次API不返回有效的XML记录
nRet = ReadOneXmlRecord(out strXml,
out strPath,
out strTimestamp);
if (nRet == -1)
{
strError = "ReadOneXmlRecord() 出错";
return -1;
}
if (nRet == 1)
return 1;
Debug.Assert(nRet == 0, "");
ResPath respath = new ResPath(strPath);
record = new UploadRecord();
record.Url = respath.Url;
record.RecordBody = new RecordBody();
record.RecordBody.Xml = strXml;
record.RecordBody.Path = respath.Path; // 数据库名/ID
record.RecordBody.Timestamp = ByteArray.GetTimeStampByteArray(strTimestamp);
return 0;
}
else if (this.FileType == ExportFileType.BackupFile)
{
List<OneRes> reslist = null;
// 从 .dp2bak 文件中读出每个资源的主要信息
// 本函数调用前，文件指针在整个记录的开始位置
// return:
// -1 出错
// 0 正常
// 1 结束。此次API不返回有效的XML记录
nRet = ReadResFrameInfo(
out reslist,
out strError);
if (nRet == -1)
return -1;
if (nRet == 1)
return 1;
if (reslist == null || reslist.Count == 0)
{
strError = "二进制记录内没有包含任何资源";
return -1;
}
// 第一个资源
Debug.Assert(reslist.Count > 0, "");
OneRes first = reslist[0];
record = new UploadRecord();
record.ResList = reslist;
ResPath respath = new ResPath(first.Path);
record.Url = respath.Url;
record.RecordBody = new RecordBody();
record.RecordBody.Xml = "";
record.RecordBody.Path = respath.Path; // 数据库名/ID
record.RecordBody.Timestamp = first.Timestamp;
// 如果第一个资源的尺寸不是太大，还要取得 XML 字符串
if (first.Length < 500 * 1024)
{
long lSave = this.Stream.Position;
try
{
this.Stream.Seek(first.StartOffs, SeekOrigin.Begin);
byte[] baContent = new byte[(int)first.Length];
int nCount = this.Stream.Read(baContent, 0, baContent.Length);
if (nCount < baContent.Length)
{
strError = "读取XML字符串时超过文件尾部";
return -1;
}
// 转换成字符串
record.RecordBody.Xml = ByteArray.ToString(baContent);
}
finally
{
// TODO: 移动指针的动作可以优化
this.Stream.Seek(lSave, SeekOrigin.Begin);
}
}
return 0;
}
else if (this.FileType == ExportFileType.ISO2709File)
{
string strMARC = "";
// 从ISO2709文件中读入一条MARC记录
// return:
// -2 MARC格式错
// -1 出错
// 0 正确
// 1 结束(当前返回的记录有效)
// 2 结束(当前返回的记录无效)
nRet = MarcUtil.ReadMarcRecord(this.Stream,
this.Encoding,
true, // bRemoveEndCrLf,
true, // bForce,
out strMARC,
out strError);
if (nRet == -2 || nRet == -1)
{
strError = "读入MARC记录时出错: " + strError;
return -1;
}
if (nRet == 2)
return 1;
#if NO
// 测试
if (this.Index >= 50000)
return 1;
#endif
Debug.Assert(nRet == 0 || nRet == 1, "");
string strXml = "";
// 将MARC记录转换为xml格式
nRet = MarcUtil.Marc2Xml(strMARC,
this.MarcSyntax,
out strXml,
out strError);
if (nRet == -1)
return -1;
record = new UploadRecord();
record.RecordBody = new RecordBody();
record.RecordBody.Xml = strXml;
record.RecordBody.Path = "";
record.RecordBody.Timestamp = null;
return 0;
}
return 0;
}
// 写入一条 XML 记录
// return:
// -1 出错
// 0 邀请中断整个处理
// 1 成功
// 2 跳过本条，继续处理后面的
public static int WriteOneXmlRecord(
IWin32Window owner,
Stop stop,
RmsChannel channel,
UploadRecord record,
ref bool bDontPromptTimestampMismatchWhenOverwrite,
out string strError)
{
strError = "";
string strWarning = "";
// 询问库名映射关系
string strTargetPath = record.RecordBody.Path;
byte[] output_timestamp = null;
string strOutputPath = "";
REDOSAVE:
// 保存Xml记录
long lRet = channel.DoSaveTextRes(strTargetPath,
record.RecordBody.Xml,
false, // bIncludePreamble
"", // bFastMode == true ? "fastmode" : "",//strStyle,
record.RecordBody.Timestamp,
out output_timestamp,
out strOutputPath,
out strError);
if (lRet == -1)
return -1;
if (lRet == -1)
{
if (stop != null)
stop.Continue();
if (channel.ErrorCode == ChannelErrorCode.TimestampMismatch)
{
string strDisplayRecPath = strOutputPath;
if (string.IsNullOrEmpty(strDisplayRecPath) == true)
strDisplayRecPath = strTargetPath;
if (bDontPromptTimestampMismatchWhenOverwrite == true)
{
record.RecordBody.Timestamp = output_timestamp;
strWarning = " (时间戳不匹配, 自动重试)";
// TODO: 如何防止死循环?
goto REDOSAVE;
}
string strText = "保存 '" + strDisplayRecPath
+ " 时发现时间戳不匹配。详细情况如下：\r\n---\r\n"
+ strError + "\r\n---\r\n\r\n是否以新时间戳强行覆盖保存?\r\n注：\r\n[是] 强行覆盖保存\r\n[否] 忽略当前记录或资源保存，但继续后面的处理\r\n[取消] 中断整个批处理";
//WriteLog("打开对话框 '" + strText.Replace("\r\n", "\\n") + "'");
DialogResult result = MessageDlg.Show(owner,
strText,
"dp2batch",
MessageBoxButtons.YesNoCancel,
MessageBoxDefaultButton.Button1,
ref bDontPromptTimestampMismatchWhenOverwrite);
//WriteLog("关闭对话框 '" + strText.Replace("\r\n", "\\n") + "'");
if (result == DialogResult.Yes)
{
record.RecordBody.Timestamp = output_timestamp;
strWarning = " (时间戳不匹配, 应用户要求重试)";
goto REDOSAVE;
}
if (result == DialogResult.No)
{
return 2; // 继续作后面的资源
}
if (result == DialogResult.Cancel)
{
strError = "用户中断";
return 0; // 中断整个处理
}
}
// 询问是否重试
{
string strText = "保存 '" + strTargetPath
+ " 时发生错误。详细情况如下：\r\n---\r\n"
+ strError + "\r\n---\r\n\r\n是否重试?\r\n注：(是)重试 (否)不重试，但继续后面的处理 (取消)中断整个批处理";
//WriteLog("打开对话框 '" + strText.Replace("\r\n", "\\n") + "'");
DialogResult result1 = MessageBox.Show(owner,
strText,
"dp2batch",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button1);
//WriteLog("关闭对话框 '" + strText.Replace("\r\n", "\\n") + "'");
if (result1 == DialogResult.Yes)
goto REDOSAVE;
if (result1 == DialogResult.No)
return 2; // 继续作后面的资源
}
return -1;
}
return 1;
}
