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pjs/htmlparser/tests/outsinks/Convert.cpp

317 строки
8.4 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998-1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s): Akkana Peck.
*/
#include <ctype.h> // for isdigit()
#include "nsXPCOM.h"
#include "nsParserCIID.h"
#include "nsIParser.h"
#include "nsIHTMLContentSink.h"
#include "nsIContentSerializer.h"
#include "nsLayoutCID.h"
#include "nsIHTMLToTextSink.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsIComponentRegistrar.h"
#include "nsReadableUtils.h"
#include "nsCRT.h"
static NS_DEFINE_IID(kIParserIID, NS_IPARSER_IID);
static NS_DEFINE_CID(kParserCID, NS_PARSER_CID);
int
Compare(nsString& str, nsString& aFileName)
{
// Open the file in a Unix-centric way,
// until I find out how to use nsFileSpec:
char* filename = ToNewCString(aFileName);
FILE* file = fopen(filename, "r");
if (!file)
{
fprintf(stderr, "Can't open file %s", filename);
perror(" ");
delete[] filename;
return 2;
}
delete[] filename;
// Inefficiently read from the file:
nsString inString;
int c;
int index = 0;
int different = 0;
while ((c = getc(file)) != EOF)
{
inString.Append(PRUnichar(c));
// CVS isn't doing newline comparisons on these files for some reason.
// So compensate for possible newline problems in the CVS file:
if (c == '\n' && str[index] == '\r')
++index;
if (c != str[index++])
{
//printf("Comparison failed at char %d: generated was %d, file had %d\n",
// index, (int)str[index-1], (int)c);
different = index;
break;
}
}
if (file != stdin)
fclose(file);
if (!different)
return 0;
else
{
nsAutoString left;
str.Left(left, different);
char* cstr = ToNewUTF8String(left);
printf("Comparison failed at char %d:\n-----\n%s\n-----\n",
different, cstr);
Recycle(cstr);
return 1;
}
}
//----------------------------------------------------------------------
// Convert html on stdin to either plaintext or (if toHTML) html
//----------------------------------------------------------------------
nsresult
HTML2text(nsString& inString, nsString& inType, nsString& outType,
int flags, int wrapCol, nsString& compareAgainst)
{
nsresult rv = NS_OK;
nsString outString;
// Create a parser
nsIParser* parser;
rv = nsComponentManager::CreateInstance(kParserCID, nsnull,
kIParserIID,(void**)&parser);
if (NS_FAILED(rv))
{
printf("Unable to create a parser : 0x%x\n", rv);
return NS_ERROR_FAILURE;
}
// Create the appropriate output sink
#ifdef USE_SERIALIZER
nsCAutoString progId(NS_CONTENTSERIALIZER_CONTRACTID_PREFIX);
progId.AppendWithConversion(outType);
// The syntax used here doesn't work
nsCOMPtr<nsIContentSerializer> mSerializer;
mSerializer = do_CreateInstance(NS_STATIC_CAST(const char *, progId));
NS_ENSURE_TRUE(mSerializer, NS_ERROR_NOT_IMPLEMENTED);
mSerializer->Init(flags, wrapCol);
nsCOMPtr<nsIHTMLContentSink> sink (do_QueryInterface(mSerializer));
if (!sink)
{
printf("Couldn't get content sink!\n");
return NS_ERROR_UNEXPECTED;
}
#else /* USE_SERIALIZER */
nsCOMPtr<nsIContentSink> sink;
if (inType != NS_LITERAL_STRING("text/html")
|| outType != NS_LITERAL_STRING("text/plain"))
{
char* in = ToNewCString(inType);
char* out = ToNewCString(outType);
printf("Don't know how to convert from %s to %s\n", in, out);
Recycle(in);
Recycle(out);
return NS_ERROR_FAILURE;
}
sink = do_CreateInstance(NS_PLAINTEXTSINK_CONTRACTID);
NS_ENSURE_TRUE(sink, NS_ERROR_FAILURE);
nsCOMPtr<nsIHTMLToTextSink> textSink(do_QueryInterface(sink));
NS_ENSURE_TRUE(textSink, NS_ERROR_FAILURE);
textSink->Initialize(&outString, flags, wrapCol);
#endif /* USE_SERIALIZER */
parser->SetContentSink(sink);
nsCOMPtr<nsIDTD> dtd;
if (inType.Equals(NS_LITERAL_STRING("text/html"))) {
static NS_DEFINE_CID(kNavDTDCID, NS_CNAVDTD_CID);
rv=nsComponentManager::CreateInstance(kNavDTDCID,nsnull,NS_GET_IID(nsIDTD),getter_AddRefs(dtd));
}
else
{
printf("Don't know how to deal with non-html input!\n");
return NS_ERROR_NOT_IMPLEMENTED;
}
if (NS_FAILED(rv))
{
printf("Couldn't create new HTML DTD: 0x%x\n", rv);
return rv;
}
parser->RegisterDTD(dtd);
rv = parser->Parse(inString, 0, NS_LossyConvertUCS2toASCII(inType), PR_FALSE, PR_TRUE);
if (NS_FAILED(rv))
{
printf("Parse() failed! 0x%x\n", rv);
return rv;
}
NS_RELEASE(parser);
if (compareAgainst.Length() > 0)
return Compare(outString, compareAgainst);
char* charstar = ToNewUTF8String(outString);
printf("Output string is:\n--------------------\n%s--------------------\n",
charstar);
delete[] charstar;
return NS_OK;
}
//----------------------------------------------------------------------
int main(int argc, char** argv)
{
nsString inType(NS_LITERAL_STRING("text/html"));
nsString outType(NS_LITERAL_STRING("text/plain"));
int wrapCol = 72;
int flags = 0;
nsString compareAgainst;
// Skip over progname arg:
const char* progname = argv[0];
--argc; ++argv;
// Process flags
while (argc > 0 && argv[0][0] == '-')
{
switch (argv[0][1])
{
case 'h':
printf("\
Usage: %s [-i intype] [-o outtype] [-f flags] [-w wrapcol] [-c comparison_file] infile\n\
\tIn/out types are mime types (e.g. text/html)\n\
\tcomparison_file is a file against which to compare the output\n\
\n\
\tDefaults are -i text/html -o text/plain -f 0 -w 72 [stdin]\n",
progname);
exit(0);
case 'i':
if (argv[0][2] != '\0')
inType.AssignWithConversion(argv[0]+2);
else {
inType.AssignWithConversion(argv[1]);
--argc;
++argv;
}
break;
case 'o':
if (argv[0][2] != '\0')
outType.AssignWithConversion(argv[0]+2);
else {
outType.AssignWithConversion(argv[1]);
--argc;
++argv;
}
break;
case 'w':
if (isdigit(argv[0][2]))
wrapCol = atoi(argv[0]+2);
else {
wrapCol = atoi(argv[1]);
--argc;
++argv;
}
break;
case 'f':
if (isdigit(argv[0][2]))
flags = atoi(argv[0]+2);
else {
flags = atoi(argv[1]);
--argc;
++argv;
}
break;
case 'c':
if (argv[0][2] != '\0')
compareAgainst.AssignWithConversion(argv[0]+2);
else {
compareAgainst.AssignWithConversion(argv[1]);
--argc;
++argv;
}
break;
}
++argv;
--argc;
}
FILE* file = 0;
if (argc > 0) // read from a file
{
// Open the file in a Unix-centric way,
// until I find out how to use nsFileSpec:
file = fopen(argv[0], "r");
if (!file)
{
fprintf(stderr, "Can't open file %s", argv[0]);
perror(" ");
exit(1);
}
}
else
file = stdin;
nsresult ret;
{
nsCOMPtr<nsIServiceManager> servMan;
NS_InitXPCOM2(getter_AddRefs(servMan), nsnull, nsnull);
nsCOMPtr<nsIComponentRegistrar> registrar = do_QueryInterface(servMan);
NS_ASSERTION(registrar, "Null nsIComponentRegistrar");
registrar->AutoRegister(nsnull);
// Read in the string: very inefficient, but who cares?
nsString inString;
int c;
while ((c = getc(file)) != EOF)
inString.Append(PRUnichar(c));
if (file != stdin)
fclose(file);
ret = HTML2text(inString, inType, outType, flags, wrapCol, compareAgainst);
} // this scopes the nsCOMPtrs
// no nsCOMPtrs are allowed to be alive when you call NS_ShutdownXPCOM
nsresult rv = NS_ShutdownXPCOM( NULL );
NS_ASSERTION(NS_SUCCEEDED(rv), "NS_ShutdownXPCOM failed");
return ret;
}
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