- return success in show if a virtual package was given

[apt.git] / ftparchive / cachedb.cc

diff --git a/ftparchive/cachedb.cc b/ftparchive/cachedb.cc
index 427fea7e4541a553b3f1be4eab089c45004ed030..b04244347f4bd258a0d593712a91287fc52eaafc 100644 (file)
--- a/ftparchive/cachedb.cc
+++ b/ftparchive/cachedb.cc
@@ -10,10 +10,6 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "cachedb.h"
-#endif
-
 #include "cachedb.h"
 
 #include <apti18n.h>
@@ -30,7 +26,7 @@
 // CacheDB::ReadyDB - Ready the DB2                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* This opens the DB2 file for caching package information */
-bool CacheDB::ReadyDB(string DB)
+bool CacheDB::ReadyDB(string const &DB)
 {
    int err;
 
@@ -69,6 +65,12 @@ bool CacheDB::ReadyDB(string DB)
                             (ReadOnly?DB_RDONLY:DB_CREATE), 0644);
 
       }
+      // the database format has changed from DB_HASH to DB_BTREE in 
+      // apt 0.6.44
+      if (err == EINVAL)
+      {
+        _error->Error(_("DB format is invalid. If you upgraded from an older version of apt, please remove and re-create the database."));
+      }
       if (err)
       {
           Dbp = 0;
@@ -81,7 +83,7 @@ bool CacheDB::ReadyDB(string DB)
    return true;
 }
                                                                        /*}}}*/
-// CacheDB::OpenFile - Open the filei                                  /*{{{*/
+// CacheDB::OpenFile - Open the file                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool CacheDB::OpenFile()
@@ -100,9 +102,9 @@ bool CacheDB::OpenFile()
 // ---------------------------------------------------------------------
 /* This gets the size from the database if it's there.  If we need
  * to look at the file, also get the mtime from the file. */
-bool CacheDB::GetFileStat()
+bool CacheDB::GetFileStat(bool const &doStat)
 {
-       if ((CurStat.Flags & FlSize) == FlSize)
+       if ((CurStat.Flags & FlSize) == FlSize && doStat == false)
        {
                /* Already worked out the file size */
        }
@@ -137,7 +139,7 @@ bool CacheDB::GetCurStat()
    
        if (DBLoaded)
        {
-               /* First see if thre is anything about it
+               /* First see if there is anything about it
                   in the database */
 
                /* Get the flags (and mtime) */
@@ -158,9 +160,9 @@ bool CacheDB::GetCurStat()
                                                                        /*}}}*/
 // CacheDB::GetFileInfo - Get all the info about the file              /*{{{*/
 // ---------------------------------------------------------------------
-bool CacheDB::GetFileInfo(string FileName, bool DoControl, bool DoContents,
-                               bool GenContentsOnly, 
-                               bool DoMD5, bool DoSHA1, bool DoSHA256)
+bool CacheDB::GetFileInfo(string const &FileName, bool const &DoControl, bool const &DoContents,
+                               bool const &GenContentsOnly, bool const &DoMD5, bool const &DoSHA1,
+                               bool const &DoSHA256, bool const &checkMtime)
 {
        this->FileName = FileName;
 
@@ -169,22 +171,26 @@ bool CacheDB::GetFileInfo(string FileName, bool DoControl, bool DoContents,
                return false;
    }   
    OldStat = CurStat;
-       
-       if (GetFileStat() == false)
+
+       if (GetFileStat(checkMtime) == false)
        {
                delete Fd;
                Fd = NULL;
                return false;   
        }
 
+    /* if mtime changed, update CurStat from disk */
+    if (checkMtime == true && OldStat.mtime != CurStat.mtime)
+        CurStat.Flags = FlSize;
+
        Stats.Bytes += CurStat.FileSize;
        Stats.Packages++;
 
-       if (DoControl && LoadControl() == false
-               || DoContents && LoadContents(GenContentsOnly) == false
-               || DoMD5 && GetMD5(false) == false
-               || DoSHA1 && GetSHA1(false) == false
-               || DoSHA256 && GetSHA256(false) == false)
+       if ((DoControl && LoadControl() == false)
+               || (DoContents && LoadContents(GenContentsOnly) == false)
+               || (DoMD5 && GetMD5(false) == false)
+               || (DoSHA1 && GetSHA1(false) == false)
+               || (DoSHA256 && GetSHA256(false) == false))
        {
                delete Fd;
                Fd = NULL;
@@ -245,7 +251,7 @@ bool CacheDB::LoadControl()
 // CacheDB::LoadContents - Load the File Listing                       /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool CacheDB::LoadContents(bool GenOnly)
+bool CacheDB::LoadContents(bool const &GenOnly)
 {
    // Try to read the control information out of the DB.
    if ((CurStat.Flags & FlContents) == FlContents)
@@ -295,7 +301,7 @@ static string bytes2hex(uint8_t *bytes, size_t length) {
    return string(space);
 }
 
-static inline unsigned char xdig2num(char dig) {
+static inline unsigned char xdig2num(char const &dig) {
    if (isdigit(dig)) return dig - '0';
    if ('a' <= dig && dig <= 'f') return dig - 'a' + 10;
    if ('A' <= dig && dig <= 'F') return dig - 'A' + 10;
@@ -316,7 +322,7 @@ static void hex2bytes(uint8_t *bytes, const char *hex, int length) {
 // CacheDB::GetMD5 - Get the MD5 hash                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool CacheDB::GetMD5(bool GenOnly)
+bool CacheDB::GetMD5(bool const &GenOnly)
 {
    // Try to read the control information out of the DB.
    if ((CurStat.Flags & FlMD5) == FlMD5)
@@ -347,7 +353,7 @@ bool CacheDB::GetMD5(bool GenOnly)
 // CacheDB::GetSHA1 - Get the SHA1 hash                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool CacheDB::GetSHA1(bool GenOnly)
+bool CacheDB::GetSHA1(bool const &GenOnly)
 {
    // Try to read the control information out of the DB.
    if ((CurStat.Flags & FlSHA1) == FlSHA1)
@@ -378,7 +384,7 @@ bool CacheDB::GetSHA1(bool GenOnly)
 // CacheDB::GetSHA256 - Get the SHA256 hash                            /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool CacheDB::GetSHA256(bool GenOnly)
+bool CacheDB::GetSHA256(bool const &GenOnly)
 {
    // Try to read the control information out of the DB.
    if ((CurStat.Flags & FlSHA256) == FlSHA256)
@@ -447,21 +453,21 @@ bool CacheDB::Clean()
    memset(&Data,0,sizeof(Data));
    while ((errno = Cursor->c_get(Cursor,&Key,&Data,DB_NEXT)) == 0)
    {
-      const char *Colon = (char *)Key.data;
-      for (; Colon != (char *)Key.data+Key.size && *Colon != ':'; Colon++);
-      if ((char *)Key.data+Key.size - Colon > 2)
+      const char *Colon = (char*)memrchr(Key.data, ':', Key.size);
+      if (Colon)
       {
-        if (stringcmp((char *)Key.data,Colon,"st") == 0 ||
-            stringcmp((char *)Key.data,Colon,"cn") == 0 ||
-            stringcmp((char *)Key.data,Colon,"cl") == 0)
+         if (stringcmp(Colon + 1, (char *)Key.data+Key.size,"st") == 0 ||
+             stringcmp(Colon + 1, (char *)Key.data+Key.size,"cl") == 0 ||
+             stringcmp(Colon + 1, (char *)Key.data+Key.size,"cn") == 0)
         {
-           if (FileExists(string(Colon+1,(const char *)Key.data+Key.size)) == true)
+            if (FileExists(string((const char *)Key.data,Colon)) == true)
                continue;            
         }
       }
       
       Cursor->c_del(Cursor,0);
    }
+   Dbp->compact(Dbp, NULL, NULL, NULL, NULL, DB_FREE_SPACE, NULL);
 
    return true;
 }