// 设置历史字符串的某位的 'y' 状态
public static int SetNotified(
LibraryApplication app,
string strBodyType,
int nTimeIndex,
ref string strHistory,
out string strError)
{
strError = "";
Debug.Assert(nTimeIndex >= 0, "");
int nExtendCount = 0; // 扩展接口的个数
if (app.m_externalMessageInterfaces != null)
nExtendCount = app.m_externalMessageInterfaces.Count;
int nSegmentLength = nExtendCount + 2; // 每个小部分的长度
int index = -1; // 0: dpmail; 1: email; >=2: 其他扩充的消息接口方式
if (strBodyType == "dpmail")
{
index = 0;
}
else if (strBodyType == "email")
{
index = 1;
}
else
{
MessageInterface external_interface = app.GetMessageInterface(strBodyType);
if (external_interface == null)
{
strError = "不能识别的 message type '" + strBodyType + "'";
return -1;
}
index = app.m_externalMessageInterfaces.IndexOf(external_interface);
if (index == -1)
{
strError = "external_interface (type '" + external_interface.Type + "') 没有在 m_externalMessageInterfaces 数组中找到";
return -1;
}
index += 2;
}
// 计算在整体中的偏移
index = (nSegmentLength * nTimeIndex) + index;
if (strHistory.Length < index + 1)
strHistory = strHistory.PadRight(index + 1, 'n');
strHistory = strHistory.Remove(index, 1);
strHistory = strHistory.Insert(index, "y");
return 1;
}
// 合并设置一种 body type 的全部通知字符
// 把 strChars 中的 'y' 设置到 strHistory 中对应达到位。'n' 不设置
public static int SetNotifiedChars(LibraryApplication app,
string strBodyType,
string strChars,
ref string strHistory,
out string strError)
{
strError = "";
int nExtendCount = 0; // 扩展接口的个数
if (app.m_externalMessageInterfaces != null)
nExtendCount = app.m_externalMessageInterfaces.Count;
int nSegmentLength = nExtendCount + 3; // 原来是 2 // 每个小部分的长度
int index = -1; // 0: dpmail; 1: email; >=2: 其他扩充的消息接口方式
if (strBodyType == "dpmail")
{
index = 0;
}
else if (strBodyType == "email")
{
index = 1;
}
else if (strBodyType == "mq")
{
index = 2;
}
else
{
MessageInterface external_interface = app.GetMessageInterface(strBodyType);
if (external_interface == null)
{
strError = "不能识别的 message type '" + strBodyType + "'";
return -1;
}
index = app.m_externalMessageInterfaces.IndexOf(external_interface);
if (index == -1)
{
strError = "external_interface (type '" + external_interface.Type + "') 没有在 m_externalMessageInterfaces 数组中找到";
return -1;
}
index += 3; // 原来是 2
}
for (int i = 0; i < strChars.Length; i++)
{
char ch = strChars[i];
if (ch == 'n')
continue;
int nLength = (i + 1) * nSegmentLength;
if (strHistory.Length < nLength)
strHistory = strHistory.PadRight(nLength, 'n');
int nOffs = i * nSegmentLength + index;
strHistory = strHistory.Remove(nOffs, 1);
strHistory = strHistory.Insert(nOffs, "y");
}
return 0;
}
// 观察历史字符串的某位的 'y'/'n' 状态
// parameters:
// strBodyType 通知消息的接口 (媒体) 类型
// nTimeIndex 2013/9/24 催还的次数下标。0 表示已经超期时的催还，1 等以后的值表示配置字符串中定义的特定次数的提醒通知，也就是尚未超期时候的提醒
public static bool IsNotified(
LibraryApplication app,
string strBodyType,
int nTimeIndex,
string strHistory)
{
Debug.Assert(nTimeIndex >= 0, "");
int nExtendCount = 0; // 扩展接口的个数
if (app.m_externalMessageInterfaces != null)
nExtendCount = app.m_externalMessageInterfaces.Count;
int nSegmentLength = nExtendCount + 2; // 每个小部分的长度
int index = -1; // 0: dpmail; 1: email; >=2: 其他扩充的消息接口方式
if (strBodyType == "dpmail")
{
index = 0;
}
else if (strBodyType == "email")
{
index = 1;
}
else
{
MessageInterface external_interface = app.GetMessageInterface(strBodyType);
if (external_interface == null)
{
// strError = "不能识别的 message type '" + strBodyType + "'";
// return -1;
return false;
}
index = app.m_externalMessageInterfaces.IndexOf(external_interface);
if (index == -1)
{
// strError = "external_interface (type '" + external_interface.Type + "') 没有在 m_externalMessageInterfaces 数组中找到";
// return -1;
return false;
}
index += 2;
}
// 计算在整体中的偏移
index = (nSegmentLength * nTimeIndex) + index;
if (strHistory.Length < index + 1)
return false;
if (strHistory[index] == 'y')
return true;
return false;
}
// 获得一种 body type 的全部通知字符
public static string GetNotifiedChars(LibraryApplication app,
string strBodyType,
string strHistory)
{
int nExtendCount = 0; // 扩展接口的个数
if (app.m_externalMessageInterfaces != null)
nExtendCount = app.m_externalMessageInterfaces.Count;
int nSegmentLength = nExtendCount + 3; // 原来是 2 // 每个小部分的长度
int index = -1; // 0: dpmail; 1: email; >=2: 其他扩充的消息接口方式
if (strBodyType == "dpmail")
{
index = 0;
}
else if (strBodyType == "email")
{
index = 1;
}
else if (strBodyType == "mq")
{
index = 2;
}
else
{
MessageInterface external_interface = app.GetMessageInterface(strBodyType);
if (external_interface == null)
{
// strError = "不能识别的 message type '" + strBodyType + "'";
// return -1;
return null;
}
index = app.m_externalMessageInterfaces.IndexOf(external_interface);
if (index == -1)
{
// strError = "external_interface (type '" + external_interface.Type + "') 没有在 m_externalMessageInterfaces 数组中找到";
// return -1;
return null;
}
index += 3; // 原来是 2
}
string strResult = "";
for (int i = 0; i < strHistory.Length / nSegmentLength; i++)
{
int nStart = i * nSegmentLength;
int nLength = nSegmentLength;
if (nStart + nLength > strHistory.Length)
nLength = strHistory.Length - nStart;
string strSegment = strHistory.Substring(nStart, nLength);
if (index < strSegment.Length)
strResult += strSegment[index];
else
strResult += 'n';
}
return strResult;
}