本文整理汇总了C++中StringA::Truncate方法的典型用法代码示例。如果您正苦于以下问题：C++ StringA::Truncate方法的具体用法？C++ StringA::Truncate怎么用？C++ StringA::Truncate使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类StringA的用法示例。
在下文中一共展示了StringA::Truncate方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Resolve
/*
* vislib::sys::Path::MakeDirectory
*/
void vislib::sys::Path::MakeDirectory(const StringA& path) {
Stack<StringA> missingParts;
StringA firstBuilt;
StringA curPath = Resolve(path);
while (!File::Exists(curPath)) {
StringA::Size pos = curPath.FindLast(SEPARATOR_A);
if (pos != StringA::INVALID_POS) {
missingParts.Push(curPath.Substring(pos + 1));
if (missingParts.Peek()->IsEmpty()) {
// Remove empty directories as the incremental directory
// creation later on will fail for these.
missingParts.Pop();
}
curPath.Truncate(pos);
} else {
// Problem: No Separators left, but directory still does not exist.
#ifdef _WIN32
throw vislib::sys::SystemException(ERROR_INVALID_NAME, __FILE__, __LINE__);
#else /* _WIN32 */
throw vislib::sys::SystemException(EINVAL, __FILE__, __LINE__);
#endif /* _WIN32 */
}
}
// curPath exists
if (!File::IsDirectory(curPath)) {
// the latest existing directory is not a directory (may be a file?)
#ifdef _WIN32
throw vislib::sys::SystemException(ERROR_DIRECTORY, __FILE__, __LINE__);
#else /* _WIN32 */
throw vislib::sys::SystemException(EEXIST, __FILE__, __LINE__);
#endif /* _WIN32 */
}
while (!missingParts.IsEmpty()) {
curPath += SEPARATOR_A;
curPath += missingParts.Pop();
#ifdef _WIN32
if (CreateDirectoryA(curPath, NULL) != 0) {
#else /* _WIN32 */
if (mkdir(curPath, S_IRWXG | S_IRWXO | S_IRWXU) == 0) { // TODO: Check
#endif /* _WIN32 */
// success, so go on.
if (firstBuilt.IsEmpty()) {
firstBuilt = curPath;
}
} else {
DWORD errorCode = GetLastError();
try {
// failure, so try to remove already created paths and throw exception.
DeleteDirectory(firstBuilt, true);
} catch(...) {
}
throw vislib::sys::SystemException(errorCode, __FILE__, __LINE__);
}
}
// we are done!
}
/*
* vislib::sys::Path::MakeDirectory
*/
void vislib::sys::Path::MakeDirectory(const StringW& path) {
#ifdef _WIN32
Stack<StringW> missingParts;
StringW firstBuilt;
StringW curPath = Resolve(path);
while (!File::Exists(curPath)) {
StringW::Size pos = curPath.FindLast(SEPARATOR_W);
if (pos != StringW::INVALID_POS) {
missingParts.Push(curPath.Substring(pos + 1));
if (missingParts.Peek()->IsEmpty()) {
// Remove empty directories as the incremental directory
// creation later on will fail for these.
missingParts.Pop();
}
curPath.Truncate(pos);
} else {
// Problem: No Separators left, but directory still does not exist.
throw vislib::sys::SystemException(ERROR_INVALID_NAME, __FILE__, __LINE__);
}
}
// curPath exists
if (!File::IsDirectory(curPath)) {
// the latest existing directory is not a directory (may be a file?)
throw vislib::sys::SystemException(ERROR_DIRECTORY, __FILE__, __LINE__);
}
//.........这里部分代码省略.........