michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsPluginsDirUtils_h___
michael@0: #define nsPluginsDirUtils_h___
michael@0: 
michael@0: #include "nsPluginsDir.h"
michael@0: #include "nsTArray.h"
michael@0: #include "prmem.h"
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: // Output format from NPP_GetMIMEDescription: "...mime type[;version]:[extension]:[desecription];..."
michael@0: // The ambiguity of mime description could cause the browser fail to parse the MIME types 
michael@0: // correctly.
michael@0: // E.g. "mime type::desecription;" // correct w/o ext 
michael@0: //      "mime type:desecription;"  // wrong w/o ext 
michael@0: //
michael@0: static nsresult
michael@0: ParsePluginMimeDescription(const char *mdesc, nsPluginInfo &info)
michael@0: {
michael@0:     nsresult rv = NS_ERROR_FAILURE;
michael@0:     if (!mdesc || !*mdesc)
michael@0:        return rv;
michael@0: 
michael@0:     char *mdescDup = PL_strdup(mdesc); // make a dup of intput string we'll change it content
michael@0:     char anEmptyString[] = "";
michael@0:     nsAutoTArray<char*, 8> tmpMimeTypeArr;
michael@0:     char delimiters[] = {':',':',';'};
michael@0:     int mimeTypeVariantCount = 0;
michael@0:     char *p = mdescDup; // make a dup of intput string we'll change it content
michael@0:     while(p) {
michael@0:         char *ptrMimeArray[] = {anEmptyString, anEmptyString, anEmptyString};
michael@0: 
michael@0:         // It's easy to point out ptrMimeArray[0] to the string sounds like
michael@0:         // "Mime type is not specified, plugin will not function properly."
michael@0:         // and show this on "about:plugins" page, but we have to mark this particular
michael@0:         // mime type of given plugin as disable on "about:plugins" page,
michael@0:         // which feature is not implemented yet.
michael@0:         // So we'll ignore, without any warnings, an empty description strings, 
michael@0:         // in other words, if after parsing ptrMimeArray[0] == anEmptyString is true.
michael@0:         // It is possible do not to registry a plugin at all if it returns
michael@0:         // an empty string on GetMIMEDescription() call,
michael@0:         // e.g. plugger returns "" if pluggerrc file is not found.
michael@0: 
michael@0:         char *s = p;
michael@0:         int i;
michael@0:         for (i = 0; i < (int) sizeof(delimiters) && (p = PL_strchr(s, delimiters[i])); i++) {
michael@0:             ptrMimeArray[i] = s; // save start ptr
michael@0:             *p++ = 0; // overwrite delimiter
michael@0:             s = p; // move forward
michael@0:         }
michael@0:         if (i == 2)
michael@0:            ptrMimeArray[i] = s;
michael@0:         // fill out the temp array 
michael@0:         // the order is important, it should be the same in for loop below 
michael@0:         if (ptrMimeArray[0] != anEmptyString) {
michael@0:             tmpMimeTypeArr.AppendElement(ptrMimeArray[0]);
michael@0:             tmpMimeTypeArr.AppendElement(ptrMimeArray[1]);
michael@0:             tmpMimeTypeArr.AppendElement(ptrMimeArray[2]);
michael@0:             mimeTypeVariantCount++;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // fill out info structure
michael@0:     if (mimeTypeVariantCount) {
michael@0:         info.fVariantCount         = mimeTypeVariantCount;
michael@0:         // we can do these 3 mallocs at once, later on code cleanup
michael@0:         info.fMimeTypeArray        = (char **)PR_Malloc(mimeTypeVariantCount * sizeof(char *));
michael@0:         info.fMimeDescriptionArray = (char **)PR_Malloc(mimeTypeVariantCount * sizeof(char *));
michael@0:         info.fExtensionArray       = (char **)PR_Malloc(mimeTypeVariantCount * sizeof(char *));
michael@0: 
michael@0:         int j,i;
michael@0:         for (j = i = 0; i < mimeTypeVariantCount; i++) {
michael@0:             // the order is important, do not change it
michael@0:            // we can get rid of PL_strdup here, later on code cleanup
michael@0:             info.fMimeTypeArray[i]        =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));
michael@0:             info.fExtensionArray[i]       =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));
michael@0:             info.fMimeDescriptionArray[i] =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));
michael@0:         }
michael@0:         rv = NS_OK;
michael@0:     }
michael@0:     if (mdescDup)
michael@0:         PR_Free(mdescDup);
michael@0:     return rv;
michael@0: }
michael@0: 
michael@0: #endif /* nsPluginsDirUtils_h___ */