1 files changed, 89 insertions, 0 deletions
diff --git a/netwerk/streamconv/converters/nsTXTToHTMLConv.h b/netwerk/streamconv/converters/nsTXTToHTMLConv.h
new file mode 100644
index 000000000..30ca811a1
--- /dev/null
+++ b/netwerk/streamconv/converters/nsTXTToHTMLConv.h
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ____nstxttohtmlconv___h___
+#define ____nstxttohtmlconv___h___
+
+#include "nsITXTToHTMLConv.h"
+#include "nsCOMPtr.h"
+#include "nsTArray.h"
+#include "nsString.h"
+
+#define NS_NSTXTTOHTMLCONVERTER_CID                         \
+{ /* 9ef9fa14-1dd1-11b2-9d65-d72d6d1f025e */ \
+    0x9ef9fa14, \
+    0x1dd1, \
+    0x11b2, \
+    {0x9d, 0x65, 0xd7, 0x2d, 0x6d, 0x1f, 0x02, 0x5e} \
+}
+
+// Internal representation of a "token"
+typedef struct convToken {
+    nsString token;     // the actual string (i.e. "http://")
+    nsString modText;   // replacement text or href prepend text.
+    bool     prepend;   // flag indicating how the modText should be used.
+} convToken;
+
+template<class T> class nsAutoPtr;
+
+/**
+ * Convert plain text to HTML.
+ *
+ * OVERVIEW OF HOW THIS CLASS WORKS:
+ *
+ * This class stores an array of tokens that should be replaced by something,
+ * or something that should be prepended.
+ * The "token" member of convToken is the text to search for. This is a
+ * substring of the desired token. Tokens are delimited by TOKEN_DELIMITERS.
+ * That entire token will be replaced by modText (if prepend is false); or it
+ * will be linkified and modText will be prepended to the token if prepend is
+ * true.
+ *
+ * Note that all of the text will be in a preformatted block, so there is no
+ * need to emit line-end tags, or set the font face to monospace.
+ *
+ * This works as a stream converter, so data will arrive by
+ * OnStartRequest/OnDataAvailable/OnStopRequest calls.
+ *
+ * OStopR will possibly process a remaining token.
+ *
+ * If the data of one pass contains a part of a token, that part will be stored
+ * in mBuffer. The rest of the data will be sent to the next listener.
+ * 
+ * XXX this seems suboptimal. this means that this design will only work for
+ * links. and it is impossible to append anything to the token. this means that,
+ * for example, making *foo* bold is not possible.
+ */
+class nsTXTToHTMLConv : public nsITXTToHTMLConv {
+public:
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSISTREAMCONVERTER
+    NS_DECL_NSITXTTOHTMLCONV
+    NS_DECL_NSIREQUESTOBSERVER
+    NS_DECL_NSISTREAMLISTENER
+
+    nsTXTToHTMLConv();
+    nsresult Init();
+
+protected:
+    virtual ~nsTXTToHTMLConv();
+
+    // return the token and it's location in the underlying buffer.
+    int32_t FindToken(int32_t cursor, convToken* *_retval);
+
+    // return the cursor location after munging HTML into the 
+    // underlying buffer, according to mToken
+    int32_t CatHTML(int32_t front, int32_t back);
+
+    nsCOMPtr<nsIStreamListener>     mListener; // final listener (consumer)
+    nsString                        mBuffer;   // any carry over data
+    nsTArray<nsAutoPtr<convToken> > mTokens;   // list of tokens to search for
+    convToken                       *mToken;   // current token (if any)
+    nsString                        mPageTitle; // Page title
+    bool                            mPreFormatHTML; // Whether to use <pre> tags
+};
+
+#endif // ____nstxttohtmlconv___h___
+