C++ AString::Valid方法代码示例

bool ADVBPatterns::InsertPattern(const AString& user, const AString& pattern)
{
	const ADVBConfig& config = ADVBConfig::Get();
	ADVBLock lock("patterns");
	bool changed = false;

	if (user.Valid()) changed = AddPatternToFile(config.GetUserPatternsPattern().SearchAndReplace("{#?}", user), pattern);
	else			  changed = AddPatternToFile(config.GetPatternsFile(), pattern);

	return changed;
}

bool ADVBPatterns::UpdatePatternInFile(const AString& filename, const AString& pattern, const AString& newpattern)
{
	const ADVBConfig& config = ADVBConfig::Get();
	AString filename1 = filename + ".new";
	AStdFile ifp, ofp;
	bool changed = false, found = false;

	if (ifp.open(filename)) {
		if (ofp.open(filename1, "w")) {
			AString line;

			while (line.ReadLn(ifp) >= 0) {
				if (line == pattern) {
					if (newpattern.Valid()) ofp.printf("%s\n", newpattern.str());
					changed = found = true;

					if (newpattern.Valid()) {
						config.logit("Changed pattern '%s' to '%s' in file '%s'", pattern.str(), newpattern.str(), filename.str());
					}
					else {
						config.logit("Deleted pattern '%s' from file '%s'", pattern.str(), filename.str());
					}
				}
				else if (line.Words(0).Valid()) ofp.printf("%s\n", line.str());
				else changed = true;
			}
			ofp.close();
		}

		ifp.close();

		if (changed) {
			remove(filename);
			rename(filename1, filename);
		}
		else remove(filename1);
	}

	return found;
}

bool ReadJPEGInfo(const char *filename, JPEG_INFO& info)
{
	EXIFINFO exinfo;
	Exif exif(&exinfo);
	FILE *fp;
	bool success = false;

	memset(&exinfo, 0, sizeof(exinfo));

	if ((fp = fopen(filename, "rb")) != NULL) {
		if (exif.DecodeExif(fp)) {
			info.CameraMake  = exinfo.CameraMake;
			info.CameraModel = exinfo.CameraModel;
			info.Width  	 = exinfo.Width;
			info.Height 	 = exinfo.Height;
			info.Orientation = exinfo.Orientation;
			info.bDateValid  = false;
			info.Comments    = exinfo.Comments;

			AString str = exinfo.DateTime;

			if (str.Valid()) {
				//printf("File '%s' has date '%s'\n", filename, str.str());

				str.Replace(":/-.", "    ");
				
				ADateTime& dt = info.DateTime;
				uint_t word = 0;
				
				uint16_t year   = str.Word(word++);
				uint8_t  month  = str.Word(word++);
				uint8_t  day    = str.Word(word++);
				uint8_t  hour   = str.Word(word++);
				uint8_t  minute = str.Word(word++);
				uint8_t  second = str.Word(word++);

				if ((year >= 1980) && RANGE(month, 1, 12) && RANGE(day, 1, 31) && (hour <= 23) && (minute <= 59) && (second <= 61)) {
					dt.Set(day, month, year, hour, minute, second);
					
					info.bDateValid = true;
				}
			}

			success = true;
		}
		
		fclose(fp);
	}

	return success;
}

bool ADVBPatterns::UpdatePattern(const AString& olduser, const AString& oldpattern, const AString& newuser, const AString& newpattern)
{
	ADVBLock lock("patterns");
	bool changed = false;

	if (newuser != olduser) {
		changed |= DeletePattern(olduser, oldpattern);
		if (newpattern.Valid()) {
			changed |= InsertPattern(newuser, newpattern);
		}
	}
	else if (newpattern != oldpattern) changed |= UpdatePattern(newuser, oldpattern, newpattern);

	return changed;
}

bool CreateDirectory(const AString& dir)
{
	AString parentdir = dir.PathPart();
	FILE_INFO file;
	bool success = true;

	if (parentdir.Valid() && (parentdir != "/") && !::GetFileInfo(parentdir, &file)) success = CreateDirectory(parentdir);

	if (success && (dir.FilePart().Valid()) && !::GetFileInfo(dir, &file)) {
#ifdef __LINUX__
		success = (mkdir(dir, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH | S_IWOTH | S_IXOTH) == 0);
#else
		success = ::CreateDirectoryA(dir.str(), NULL);
#endif
	}

	return success;
}

bool Recurse(const AString& Path, const AString& Pattern, uint_t nSubDirs, bool (*fn)(const FILE_INFO *file, void *Context), void *Context)
{
	AString   pattern = ParsePathRegex(Pattern);
	FILE_INFO file;
	DIR		  *handle;
	bool      ok = true, any = IsRegexAnyPattern(pattern);

	if ((handle = opendir(Path.Valid() ? Path : ".")) != NULL) {
		struct dirent *ent;

		while (ok && ((ent = readdir(handle)) != NULL)) {
			if (SetFileData(Path, *ent, &file)) {
				if ((file.ShortName != ".") && (file.ShortName != "..")) {
					bool done = false;

					if (any || MatchPathRegex(file.ShortName, pattern)) {
						ok = (*fn)(&file, Context);
						if (!ok) break;
						done = true;
					}
					if ((nSubDirs > 0) && (file.Attrib & FILE_FLAG_IS_DIR)) {
						if (!done) {
							ok = (*fn)(&file, Context);
							if (!ok) break;
						}
						
						ok = Recurse(file.FileName, Pattern, nSubDirs - 1, fn, Context);
						if (!ok) break;
					}
				}
			}
		}

		closedir(handle);
	}

	return ok;
}

bool ADVBPatterns::ParsePattern(ADataList& patternlist, const AString& line, AString& errors, const AString& user)
{
	//const ADVBConfig& config = ADVBConfig::Get();
	PATTERN *pattern;
	bool    success = false;

	patternlist.SetDestructor(&__DeletePattern);

	if ((pattern = new PATTERN) != NULL) {
		AString errs = ParsePattern(line, *pattern, user);

		if (errs.Valid()) {
			//config.printf("Error parsing '%s': %s", line.str(), errs.str());
			errors += errs + "\n";
		}

		if ((pattern->list.Count() > 0) || pattern->errors.Valid()) {
			patternlist.Add((uptr_t)pattern);
			success = true;
		}
	}

	return success;
}

void ADVBConfig::ListUsers(AList& list) const
{
	AHash 	 users(10);
	AList 	 userpatterns;
	AString  filepattern 	   = GetUserPatternsPattern();
	AString  filepattern_parsed = ParseRegex(filepattern);
	AString  _users             = GetConfigItem("users");
	AStdFile fp;
	uint_t   i, n = _users.CountColumns();

	//debug("Reading users from config %s\n", config.GetFilename().str());

	for (i = 0; i < n; i++) {
		AString user = _users.Column(i).Words(0);

		if (!users.Exists(user)) {
			users.Insert(user, 0);
			list.Add(new AString(user));
		}
	}

	if (fp.open(GetPatternsFile())) {
		AString line;

		while (line.ReadLn(fp) >= 0) {
			AString user;
			int p;

			if		((p = line.PosNoCase(" user:=")) >= 0) user = line.Mid(p + 7).Word(0).DeQuotify();
			else if (line.PosNoCase("user:=") == 0)        user = line.Mid(6).Word(0).DeQuotify();

			if (user.Valid() && !users.Exists(user)) {
				users.Insert(user, 0);
				list.Add(new AString(user));
			}
		}

		fp.close();
	}

	::CollectFiles(filepattern.PathPart(), filepattern.FilePart(), 0, userpatterns);

	const AString *file = AString::Cast(userpatterns.First());
	while (file) {
		AString   user;
		ADataList regions;

		if (MatchRegex(*file, filepattern_parsed, regions)) {
			const REGEXREGION *region = (const REGEXREGION *)regions[0];

			if (region) {
				user = file->Mid(region->pos, region->len);
				if (!users.Exists(user)) {
					users.Insert(user, 0);
					list.Add(new AString(user));
				}
			}
		}

		file = file->Next();
	}

	list.Sort(&AString::AlphaCompareCase);
}