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/* -*- Mode: C++; tab-width: 2; 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/. */
// Utility that converts file encoded in one charset codepage to
// another encoding
#include "nscore.h"
#include "nsString.h"
#include "nsIServiceManager.h"
#include "nsICharsetConverterManager.h"
#include "nsIUnicodeEncoder.h"
#include "nsIUnicodeDecoder.h"
static NS_DEFINE_CID(kCharsetConverterManagerCID, NS_ICHARSETCONVERTERMANAGER_CID);
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
void usage()
{
printf(
"nsconv -f fromcode -t tocode infile outfile\n"
"nsconv -f fromcode -t tocode infile > outfile\n"
"nsconv -f fromcode -t tocode < infile > outfile\n"
);
}
#define INBUFSIZE (1024*16)
#define MEDBUFSIZE (1024*16*2)
#define OUTBUFSIZE (1024*16*8)
char inbuffer[INBUFSIZE];
char outbuffer[OUTBUFSIZE];
char16_t medbuffer[MEDBUFSIZE];
int main(int argc, const char** argv)
{
nsIUnicodeEncoder* encoder = nullptr;
nsIUnicodeDecoder* decoder = nullptr;
FILE* fin = 0;
FILE* fout = 0;
FILE* infile = 0;
FILE* outfile = 0;
nsresult res= NS_OK;
NS_InitXPCOM2(nullptr, nullptr, nullptr);
// get ccMain;
nsCOMPtr<nsICharsetConverterManager> ccMain =
do_GetService(kCharsetConverterManagerCID, &res);
if(NS_FAILED(res))
{
fprintf(stderr, "Cannot get Character Converter Manager %x\n", res);
return -1;
}
int i;
if(argc > 4)
{
for(i =0; i < argc; i++)
{
if(strcmp(argv[i], "-f") == 0)
{
// User has specified the charset to convert from
nsAutoCString str;
// First check if a charset alias was given,
// and convert to the canonical name
res = ccMain->GetCharsetAlias(argv[i+1], str);
if (NS_FAILED(res))
{
fprintf(stderr, "Cannot get charset alias for %s %x\n",
argv[i+1], res);
goto error_exit;
}
// Finally create the decoder
res = ccMain->GetUnicodeDecoder(str.get(), &decoder);
if(NS_FAILED(res)) {
fprintf(stderr, "Cannot get Unicode decoder %s %x\n",
argv[i+1],res);
goto error_exit;
}
}
if(strcmp(argv[i], "-t") == 0)
{
// User has specified which charset to convert to
nsAutoCString str;
// First check if a charset alias was given,
// and convert to the canonical name
res = ccMain->GetCharsetAlias(argv[i+1], str);
if (NS_FAILED(res))
{
fprintf(stderr, "Cannot get charset alias for %s %x\n",
argv[i+1], res);
goto error_exit;
}
// Finally create the encoder
res = ccMain->GetUnicodeEncoderRaw(str.get(), &encoder);
if(NS_FAILED(res)) {
fprintf(stderr, "Cannot get Unicode encoder %s %x\n",
argv[i+1],res);
goto error_exit;
}
}
}
if (argc > 5)
{
// The user has specified an input file
// if we have more than four arguments
fin = infile = fopen(argv[5], "rb");
if(!infile)
{
usage();
fprintf(stderr,"cannot open input file %s\n", argv[5]);
goto error_exit;
}
if (argc > 6)
{
// The user has specified an output file
// if we have more than four arguments
fout = outfile = fopen(argv[6], "ab");
if(!outfile)
{
usage();
fprintf(stderr,"cannot open output file %s\n", argv[6]);
goto error_exit;
}
}
else
fout = stdout;
}
else
{
// No inputfiles are given. Read and write
// to/from standard in and standard out
fin = stdin;
fout = stdout;
}
int32_t insize,medsize,outsize;
while((insize=fread(inbuffer, 1,INBUFSIZE, fin)) > 0)
{
medsize=MEDBUFSIZE;
res = decoder->Convert(inbuffer,&insize, medbuffer, &medsize);
if(NS_FAILED(res)) {
fprintf(stderr, "failed in decoder->Convert %x\n",res);
goto error_exit;
}
outsize = OUTBUFSIZE;
res = encoder->Convert(medbuffer, &medsize, outbuffer,&outsize);
if(NS_FAILED(res)) {
fprintf(stderr, "failed in encoder->Convert %x\n",res);
goto error_exit;
}
fwrite(outbuffer, 1, outsize, fout);
}
// Clean up
if (infile != 0)
fclose(infile);
if (outfile != 0)
fclose(outfile);
fprintf(stderr, "Done!\n");
NS_IF_RELEASE(encoder);
NS_IF_RELEASE(decoder);
return 0;
}
usage();
error_exit:
// Clean up after
if (infile != 0)
fclose(infile);
if (outfile != 0)
fclose(outfile);
NS_IF_RELEASE(encoder);
NS_IF_RELEASE(decoder);
return -1;
}
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