pjs/layout/html/tests/ParseCSS.cpp

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:cindent:ts=8:et:sw=4:
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
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 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is L. David Baron.
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 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   L. David Baron <dbaron@fas.harvard.edu> (original author)
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/*
 * This file is meant to be used with |#define CSS_REPORT_PARSE_ERRORS|
 * in mozilla/content/html/style/src/nsCSSScanner.h uncommented, and the
 * |#ifdef DEBUG| block in nsCSSScanner::OutputError (in
 * nsCSSScanner.cpp in the same directory) used (even if not a debug
 * build).
 */

#include "nsXPCOM.h"
#include "nsCOMPtr.h"

#include "nsILocalFile.h"
#include "nsNetUtil.h"

#include "nsContentCID.h"
#include "nsICSSLoader.h"
#include "nsICSSStyleSheet.h"

static NS_DEFINE_CID(kCSSLoaderCID, NS_CSS_LOADER_CID);

static already_AddRefed<nsIURI>
FileToURI(const char *aFilename)
{
    nsCOMPtr<nsILocalFile> lf(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
    // XXX Handle relative paths somehow.
    lf->InitWithNativePath(nsDependentCString(aFilename));

    nsIURI *uri = nsnull;
    NS_NewFileURI(&uri, lf);
    return uri;
}

static void
ParseCSSFile(nsIURI *aSheetURI)
{
    nsCOMPtr<nsICSSLoader> loader(do_CreateInstance(kCSSLoaderCID));
    nsCOMPtr<nsICSSStyleSheet> sheet;
    loader->LoadAgentSheet(aSheetURI, getter_AddRefs(sheet));
    NS_ASSERTION(sheet, "sheet load failed");
    PRBool complete;
    sheet->GetComplete(complete);
    NS_ASSERTION(complete, "synchronous load did not complete");
}

int main(int argc, char** argv)
{
    NS_InitXPCOM2(nsnull, nsnull, nsnull);

    for (int i = 1; i < argc; ++i) {
        const char *filename = argv[i];

        printf("\nParsing %s.\n", filename);

        nsCOMPtr<nsIURI> uri = FileToURI(filename);
        if (!uri) {
            fprintf(stderr, "Out of memory.\n");
            return 1;
        }
        ParseCSSFile(uri);
    }

    NS_ShutdownXPCOM(nsnull);

    return 0;
}