/* -*- 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"

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

// 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[] = "";

    AutoTArray<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**) malloc(mimeTypeVariantCount * sizeof(char*));

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

        info.fExtensionArray       = (char**) 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)

        PL_strfree(mdescDup);

    return rv;

}

#endif /* nsPluginsDirUtils_h___ */