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 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* 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 nsPluginsDirUtils_h___

 #define nsPluginsDirUtils_h___

 #include "nsPluginsDir.h"

 #include "nsTArray.h"

 #include "prmem.h"

 ///////////////////////////////////////////////////////////////////////////////

 // Output format from NPP_GetMIMEDescription: "...mime type[;version]:[extension]:[desecription];..."

 // The ambiguity of mime description could cause the browser fail to parse the MIME types 

 // correctly.

 // E.g. "mime type::desecription;" // correct w/o ext 

 //      "mime type:desecription;"  // wrong w/o ext 

 //

 static nsresult

 ParsePluginMimeDescription(const char *mdesc, nsPluginInfo &info)

 {

     nsresult rv = NS_ERROR_FAILURE;

     if (!mdesc || !*mdesc)

        return rv;

     char *mdescDup = PL_strdup(mdesc); // make a dup of intput string we'll change it content

     char anEmptyString[] = "";

     nsAutoTArray<char*, 8> tmpMimeTypeArr;

     char delimiters[] = {':',':',';'};

     int mimeTypeVariantCount = 0;

     char *p = mdescDup; // make a dup of intput string we'll change it content

     while(p) {

         char *ptrMimeArray[] = {anEmptyString, anEmptyString, anEmptyString};

         // It's easy to point out ptrMimeArray[0] to the string sounds like

         // "Mime type is not specified, plugin will not function properly."

         // and show this on "about:plugins" page, but we have to mark this particular

         // mime type of given plugin as disable on "about:plugins" page,

         // which feature is not implemented yet.

         // So we'll ignore, without any warnings, an empty description strings, 

         // in other words, if after parsing ptrMimeArray[0] == anEmptyString is true.

         // It is possible do not to registry a plugin at all if it returns

         // an empty string on GetMIMEDescription() call,

         // e.g. plugger returns "" if pluggerrc file is not found.

         char *s = p;

         int i;

         for (i = 0; i < (int) sizeof(delimiters) && (p = PL_strchr(s, delimiters[i])); i++) {

             ptrMimeArray[i] = s; // save start ptr

             *p++ = 0; // overwrite delimiter

             s = p; // move forward

         }

         if (i == 2)

            ptrMimeArray[i] = s;

         // fill out the temp array 

         // the order is important, it should be the same in for loop below 

         if (ptrMimeArray[0] != anEmptyString) {

             tmpMimeTypeArr.AppendElement(ptrMimeArray[0]);

             tmpMimeTypeArr.AppendElement(ptrMimeArray[1]);

             tmpMimeTypeArr.AppendElement(ptrMimeArray[2]);

             mimeTypeVariantCount++;

         }

     }

     // fill out info structure

     if (mimeTypeVariantCount) {

         info.fVariantCount         = mimeTypeVariantCount;

         // we can do these 3 mallocs at once, later on code cleanup

         info.fMimeTypeArray        = (char **)PR_Malloc(mimeTypeVariantCount * sizeof(char *));

         info.fMimeDescriptionArray = (char **)PR_Malloc(mimeTypeVariantCount * sizeof(char *));

         info.fExtensionArray       = (char **)PR_Malloc(mimeTypeVariantCount * sizeof(char *));

         int j,i;

         for (j = i = 0; i < mimeTypeVariantCount; i++) {

             // the order is important, do not change it

            // we can get rid of PL_strdup here, later on code cleanup

             info.fMimeTypeArray[i]        =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));

             info.fExtensionArray[i]       =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));

             info.fMimeDescriptionArray[i] =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));

         }

         rv = NS_OK;

     }

     if (mdescDup)

         PR_Free(mdescDup);

     return rv;

 }

 #endif /* nsPluginsDirUtils_h___ */