1 files changed, 67 insertions, 0 deletions
diff --git a/maildrop/buffer.h b/maildrop/buffer.h
new file mode 100644
index 0000000..f98e824
--- /dev/null
+++ b/maildrop/buffer.h
@@ -0,0 +1,67 @@
+#ifndef	buffer_h
+#define	buffer_h
+
+
+#include	"config.h"
+#include	<string.h>
+
+///////////////////////////////////////////////////////////////////////////
+//
+// Generic text/data buffer.  Not null-terminated by default.
+//
+// This class is used to store arbitrary text strings.  It is used by
+// the lexical scanner to build up text that's recognized as a token,
+// and the rest of the code to store strings.
+//
+///////////////////////////////////////////////////////////////////////////
+
+class Buffer {
+
+	unsigned char *buf;
+	int	bufsize;
+	int	buflength;
+public:
+	Buffer() : buf(0), bufsize(0), buflength(0)	{}
+	~Buffer()	{ if (buf)	delete[] buf; }
+	const unsigned char *Ptr() const { return (buf); }
+	operator const unsigned char *() const { return (buf); }
+	operator const char *() const { return ((const char *)buf); }
+	int	Int(const char * =0) const;
+	int	Length() const { return (buflength); }
+	void	Length(int l) { if (l < buflength) buflength=l; }
+
+	Buffer(const Buffer &);		// UNDEFINED
+	Buffer &operator=(const Buffer &);
+
+	void	push(int c) { if (buflength < bufsize)
+				{
+					buf[buflength]=c;
+					++buflength;
+				}
+				else	append(c); }
+	int	pop() { return (buflength ? buf[--buflength]:0); }
+	int	peek() { return (buflength ? buf[buflength-1]:0); }
+	void	reset() { buflength=0; }
+
+private:
+	void	append(int);
+public:
+	void	append(const void *, int);
+	void	set(const char *);
+	void	append(const char *p) { append(p, strlen(p)); }
+	void	set(unsigned long n) { buflength=0; append(n); }
+	void	append(unsigned long n);
+	void	append(double);
+	Buffer	&operator=(const char *p) { set(p); return (*this); }
+	Buffer	&operator += (const Buffer &p) { append(p.buf, p.buflength); return (*this); }
+	Buffer	&operator += (const char *p) { append(p, strlen(p)); return (*this); }
+	Buffer	&operator += (char c) { push(c); return (*this); }
+	int	operator-(const Buffer &) const;
+	int	operator-(const char *) const;
+	int	operator==(const Buffer &b) const
+		{ return ( operator-(b) == 0); }
+	int	operator==(const char *b) const
+		{ return ( operator-(b) == 0); }
+} ;
+
+#endif