embedding/qa/testembed/MostRecentUrls.cpp

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  38
  39 //
  40 // CMostRecentUrls object is responsible for keeping track of the
  41 // 16 most recently used URLs. It stores this list in a file named
  42 // "urls.txt" on a per profile basis in the user's profile directory
  43 //
  44 // The constructor loads the URL list
  45 // The destructor saves the URL list
  46 //
  47
  48 #include "StdAfx.h"
  49 #include "nsIFile.h"
  50 #include "nsILocalFile.h"
  51 #include "nsAppDirectoryServiceDefs.h"
  52 #include "MostRecentUrls.h"
  53
  54 //--------------------------------------------------------
  55 //-- CMostRecentUrls
  56 //--------------------------------------------------------
  57 CMostRecentUrls::CMostRecentUrls() :
  58         mNumURLs(0)
  59 {
  60         for (int i=0;i<MAX_URLS;i++) {
  61                 mURLs[i] = NULL;
  62         }
  63
  64         FILE * fd = GetFD("r");
  65         if (fd) {
  66                 char line[512];
  67                 while (fgets(line, 512, fd)) {
  68                         if (strlen(line) > 1) {
  69                                 line[strlen(line)-1] = 0;
  70                                 mURLs[mNumURLs++] = _strdup(line);
  71                         }
  72                 }
  73                 fclose(fd);
  74         }
  75
  76 }
  77
  78 FILE * CMostRecentUrls::GetFD(const char * aMode)
  79 {
  80     FILE * fd = nsnull;
  81     nsCOMPtr<nsIFile> file;
  82     nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(file));
  83     if (NS_SUCCEEDED(rv)) {
  84         nsCOMPtr<nsILocalFile> local_file(do_QueryInterface(file));
  85         local_file->AppendNative(NS_LITERAL_CSTRING("urls.txt"));
  86         local_file->OpenANSIFileDesc(aMode, &fd);
  87     }
  88
  89     return fd;
  90 }
  91
  92 CMostRecentUrls::~CMostRecentUrls()
  93 {
  94     FILE * fd = GetFD("w");
  95     if (fd) {
  96         for (int i=0;i<MAX_URLS;i++) {
  97             if(mURLs[i])
  98                 fprintf(fd, "%s\n", mURLs[i]);
  99         }
 100     fclose(fd);
 101     }
 102
 103     for (int i=0;i<MAX_URLS;i++) {
 104         if(mURLs[i])
 105           free(mURLs[i]);
 106     }
 107 }
 108
 109 char * CMostRecentUrls::GetURL(int aInx)
 110 {
 111     if (aInx < mNumURLs) {
 112         return mURLs[aInx];
 113     }
 114
 115     return NULL;
 116 }
 117
 118 void CMostRecentUrls::AddURL(const char * aURL)
 119 {
 120         TCHAR szTemp[512];
 121         strcpy(szTemp, aURL);
 122
 123         // check to see if an existing url matches the one passed in
 124         int i = 0;
 125         for (; i<MAX_URLS-1; i++)
 126         {
 127         if(mURLs[i])
 128         {
 129             if(strcmpi(mURLs[i], szTemp) == 0)
 130                 break;
 131         }
 132         }
 133
 134     // if there was a match "i" will point to matching url entry
 135     // if not i will be MAX_URLS-1
 136
 137     // move all url entries before this one down
 138         for (; i>0; i--)
 139         {
 140         if(mURLs[i])
 141           free(mURLs[i]);
 142
 143         if(mURLs[i-1])
 144             mURLs[i] = _strdup(mURLs[i-1]);
 145         }
 146
 147         // place this url at the top
 148     if(mURLs[0])
 149         free(mURLs[0]);
 150     mURLs[0] = _strdup(szTemp);
 151 }