Added BytesNeeded() functions to all the sniffer classes to allow

a pre-read data stream to be sniffed instead of actual files on disk.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1149 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/sniffer/DisjList.h

@@ -9,6 +9,8 @@
 #ifndef _SNIFFER_DISJ_LIST_H
 #define _SNIFFER_DISJ_LIST_H
 
+#include <sys/types.h>
+
 class BPositionIO;
 
 namespace BPrivate {
@@ -20,7 +22,9 @@ class DisjList {
 public:
 	DisjList();
 	virtual ~DisjList();
+
 	virtual bool Sniff(BPositionIO *data) const = 0;
+	virtual ssize_t BytesNeeded() const = 0;
 	
 	void SetCaseInsensitive(bool how);
 	bool IsCaseInsensitive();

headers/private/storage/sniffer/Pattern.h

@@ -33,6 +33,7 @@ public:
 	Err* GetErr() const;
 	
 	bool Sniff(Range range, BPositionIO *data, bool caseInsensitive) const;
+	ssize_t BytesNeeded() const;
 	
 	status_t SetTo(const std::string &string, const std::string &mask);
 private:

headers/private/storage/sniffer/PatternList.h

@@ -34,6 +34,8 @@ public:
 	Err* GetErr() const;
 	
 	virtual bool Sniff(BPositionIO *data) const;
+	virtual ssize_t BytesNeeded() const;
+	
 	void Add(Pattern *pattern);
 private:
 	std::vector<Pattern*> fList;

headers/private/storage/sniffer/RPattern.h

@@ -30,6 +30,7 @@ public:
 	Err* GetErr() const;
 	
 	bool Sniff(BPositionIO *data, bool caseInsensitive) const;
+	ssize_t BytesNeeded() const;
 private:
 	Range fRange;
 	Pattern *fPattern;

headers/private/storage/sniffer/RPatternList.h

@@ -31,6 +31,7 @@ public:
 	Err* GetErr() const;
 	
 	virtual bool Sniff(BPositionIO *data) const;
+	virtual ssize_t BytesNeeded() const;
 	void Add(RPattern *rpattern);
 private:
 	std::vector<RPattern*> fList;

headers/private/storage/sniffer/Rule.h

@@ -10,6 +10,8 @@
 #define _SNIFFER_RULE_H
 
 #include <SupportDefs.h>
+
+#include <sys/types.h>
 #include <vector>
 
 class BPositionIO;
@@ -28,10 +30,10 @@ public:
 	Rule();
 	~Rule();
 	
-	status_t InitCheck() const;
-	
+	status_t InitCheck() const;	
 	double Priority() const;	
 	bool Sniff(BPositionIO *data) const;	
+	ssize_t BytesNeeded() const;
 private:
 	friend class Parser;