gecko-dev/layout/style/test/ParseCSS.cpp

88 строки
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:cindent:ts=8:et:sw=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/. */
/*
* 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 "nsIFile.h"
#include "nsNetUtil.h"
#include "nsContentCID.h"
#include "mozilla/css/Loader.h"
#include "nsCSSStyleSheet.h"
static already_AddRefed<nsIURI>
FileToURI(const char *aFilename, nsresult *aRv = 0)
{
nsCOMPtr<nsIFile> lf(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, aRv));
NS_ENSURE_TRUE(lf, nullptr);
// XXX Handle relative paths somehow.
lf->InitWithNativePath(nsDependentCString(aFilename));
nsIURI *uri = nullptr;
nsresult rv = NS_NewFileURI(&uri, lf);
if (aRv)
*aRv = rv;
return uri;
}
static int
ParseCSSFile(nsIURI *aSheetURI)
{
nsRefPtr<mozilla::css::Loader> = new mozilla::css::Loader();
nsRefPtr<nsCSSStyleSheet> sheet;
loader->LoadSheetSync(aSheetURI, getter_AddRefs(sheet));
NS_ASSERTION(sheet, "sheet load failed");
/* This can happen if the file can't be found (e.g. you
* ask for a relative path and xpcom/io rejects it)
*/
if (!sheet)
return -1;
bool complete;
sheet->GetComplete(complete);
NS_ASSERTION(complete, "synchronous load did not complete");
if (!complete)
return -2;
return 0;
}
int main(int argc, char** argv)
{
if (argc < 2) {
fprintf(stderr, "%s [FILE]...\n", argv[0]);
}
nsresult rv = NS_InitXPCOM2(nullptr, nullptr, nullptr);
if (NS_FAILED(rv))
return (int)rv;
int res = 0;
for (int i = 1; i < argc; ++i) {
const char *filename = argv[i];
printf("\nParsing %s.\n", filename);
nsCOMPtr<nsIURI> uri = FileToURI(filename, &rv);
if (rv == NS_ERROR_OUT_OF_MEMORY) {
fprintf(stderr, "Out of memory.\n");
return 1;
}
if (uri)
res = ParseCSSFile(uri);
}
NS_ShutdownXPCOM(nullptr);
return res;
}