RetroZilla/embedding/tests/mfcembed/MostRecentUrls.cpp

148 lines
4.0 KiB
C++
Raw Normal View History

2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: Mozilla-sample-code 1.0
*
* Copyright (c) 2002 Netscape Communications Corporation and
* other contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this Mozilla sample software and associated documentation files
* (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Contributor(s):
* Rod Spears <rods@netscape.com>
*
* ***** END LICENSE BLOCK ***** */
//
// CMostRecentUrls object is responsible for keeping track of the
// 16 most recently used URLs. It stores this list in a file named
// "urls.txt" on a per profile basis in the user's profile directory
//
// The constructor loads the URL list
// The destructor saves the URL list
//
#include "StdAfx.h"
#include "nsIFile.h"
#include "nsILocalFile.h"
#include "nsServiceManagerUtils.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsDirectoryServiceUtils.h"
#include "MostRecentUrls.h"
//--------------------------------------------------------
//-- CMostRecentUrls
//--------------------------------------------------------
CMostRecentUrls::CMostRecentUrls() :
mNumURLs(0)
{
for (int i=0;i<MAX_URLS;i++) {
mURLs[i] = NULL;
}
FILE * fd = GetFD("r");
if (fd) {
char line[512];
while (fgets(line, 512, fd)) {
if (strlen(line) > 1) {
line[strlen(line)-1] = 0;
mURLs[mNumURLs++] = _strdup(line);
}
}
fclose(fd);
}
}
FILE * CMostRecentUrls::GetFD(const char * aMode)
{
FILE * fd = nsnull;
nsCOMPtr<nsIFile> file;
nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(file));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsILocalFile> local_file(do_QueryInterface(file));
local_file->AppendNative(nsEmbedCString("urls.txt"));
local_file->OpenANSIFileDesc(aMode, &fd);
}
return fd;
}
CMostRecentUrls::~CMostRecentUrls()
{
FILE * fd = GetFD("w");
if (fd) {
for (int i=0;i<MAX_URLS;i++) {
if(mURLs[i])
fprintf(fd, "%s\n", mURLs[i]);
}
fclose(fd);
}
for (int i=0;i<MAX_URLS;i++) {
if(mURLs[i])
free(mURLs[i]);
}
}
char * CMostRecentUrls::GetURL(int aInx)
{
if (aInx < mNumURLs) {
return mURLs[aInx];
}
return NULL;
}
void CMostRecentUrls::AddURL(const char * aURL)
{
char szTemp[512];
strncpy(szTemp, aURL, sizeof(szTemp));
szTemp[sizeof(szTemp) - 1] = '\0';
// check to see if an existing url matches the one passed in
int i = 0;
for (; i<MAX_URLS-1; i++)
{
if(mURLs[i])
{
if(strcmpi(mURLs[i], szTemp) == 0)
break;
}
}
// if there was a match "i" will point to matching url entry
// if not i will be MAX_URLS-1
// move all url entries before this one down
for (; i>0; i--)
{
if(mURLs[i])
free(mURLs[i]);
if(mURLs[i-1])
mURLs[i] = _strdup(mURLs[i-1]);
}
// place this url at the top
if(mURLs[0])
free(mURLs[0]);
mURLs[0] = _strdup(szTemp);
}