Tag file can read from unseekable objects

Author: jgg
Date: 2001-04-22 05:42:52 GMT
Tag file can read from unseekable objects

2 files changed, 17 insertions, 5 deletions

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index db878064d..97dcb82b8 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: fileutl.cc,v 1.37 2001/03/03 22:45:59 tausq Exp $
+// $Id: fileutl.cc,v 1.38 2001/04/22 05:42:52 jgg Exp $
 /* ######################################################################
    
    File Utilities
@@ -431,10 +431,13 @@ FileFd::~FileFd()
 // ---------------------------------------------------------------------
 /* We are carefull to handle interruption by a signal while reading 
    gracefully. */
-bool FileFd::Read(void *To,unsigned long Size,bool AllowEof)
+bool FileFd::Read(void *To,unsigned long Size,unsigned long *Actual)
 {
    int Res;
    errno = 0;
+   if (Actual != 0)
+      *Actual = 0;
+   
    do
    {
       Res = read(iFd,To,Size);
@@ -448,6 +451,8 @@ bool FileFd::Read(void *To,unsigned long Size,bool AllowEof)
       
       To = (char *)To + Res;
       Size -= Res;
+      if (Actual != 0)
+	 *Actual += Res;
    }
    while (Res > 0 && Size > 0);
    
@@ -455,7 +460,7 @@ bool FileFd::Read(void *To,unsigned long Size,bool AllowEof)
       return true;
    
    // Eof handling
-   if (AllowEof == true)
+   if (Actual != 0)
    {
       Flags |= HitEof;
       return true;
diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h
index 74e0d542f..8d5f03b05 100644
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: fileutl.h,v 1.24 2001/03/03 22:36:20 tausq Exp $
+// $Id: fileutl.h,v 1.25 2001/04/22 05:42:53 jgg Exp $
 /* ######################################################################
    
    File Utilities
@@ -40,7 +40,14 @@ class FileFd
    public:
    enum OpenMode {ReadOnly,WriteEmpty,WriteExists,WriteAny,WriteTemp};
    
-   bool Read(void *To,unsigned long Size,bool AllowEof = false);
+   inline bool Read(void *To,unsigned long Size,bool AllowEof)
+   {
+      unsigned long Jnk;
+      if (AllowEof)
+	 return Read(To,Size,&Jnk);
+      return Read(To,Size);
+   }   
+   bool Read(void *To,unsigned long Size,unsigned long *Actual = 0);
    bool Write(const void *From,unsigned long Size);
    bool Seek(unsigned long To);
    bool Skip(unsigned long To);