* use the new cool rred method for the patchting

[apt.git] / apt-pkg / contrib / fileutl.cc

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 0907f4dcd3650a585833b505bb387f67d1688bce..0ce0c9b9da55a4f5f48542c3191fbed63475d40c 100644 (file)
--- 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 1.35 2001/02/20 07:03:17 jgg Exp $
+// $Id: fileutl.cc,v 1.42 2002/09/14 05:29:22 jgg Exp $
 /* ######################################################################
    
    File Utilities
@@ -9,7 +9,7 @@
    GetLock - dpkg compatible lock file manipulation (fcntl)
    
    This source is placed in the Public Domain, do with it what you will
-   It was originally written by Jason Gunthorpe.
+   It was originally written by Jason Gunthorpe <jgg@debian.org>.
    
    ##################################################################### */
                                                                        /*}}}*/
@@ -23,6 +23,7 @@
 
 #include <apti18n.h>
 
+#include <iostream>
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/stat.h>
@@ -33,6 +34,8 @@
 #include <errno.h>
                                                                        /*}}}*/
 
+using namespace std;
+
 // CopyFile - Buffered copy of a file                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* The caller is expected to set things so that failure causes erasure */
@@ -153,12 +156,12 @@ string flNotDir(string File)
                                                                        /*}}}*/
 // flNotFile - Strip the file from the directory name                  /*{{{*/
 // ---------------------------------------------------------------------
-/* */
+/* Result ends in a / */
 string flNotFile(string File)
 {
    string::size_type Res = File.rfind('/');
    if (Res == string::npos)
-      return File;
+      return "./";
    Res++;
    return string(File,0,Res);
 }
@@ -303,7 +306,7 @@ bool WaitFd(int Fd,bool write,unsigned long timeout)
 /* This is used if you want to cleanse the environment for the forked 
    child, it fixes up the important signals and nukes all of the fds,
    otherwise acts like normal fork. */
-int ExecFork()
+pid_t ExecFork(int dontCloseThisFd)
 {
    // Fork off the process
    pid_t Process = fork();
@@ -326,7 +329,8 @@ int ExecFork()
       
       // Close all of our FDs - just in case
       for (int K = 3; K != 40; K++)
-        fcntl(K,F_SETFD,FD_CLOEXEC);
+        if(K != dontCloseThisFd)
+           fcntl(K,F_SETFD,FD_CLOEXEC);
    }
    
    return Process;
@@ -334,10 +338,10 @@ int ExecFork()
                                                                        /*}}}*/
 // ExecWait - Fancy waitpid                                            /*{{{*/
 // ---------------------------------------------------------------------
-/* Waits for the given sub process. If Reap is set the no errors are 
+/* Waits for the given sub process. If Reap is set then no errors are 
    generated. Otherwise a failed subprocess will generate a proper descriptive
    message */
-bool ExecWait(int Pid,const char *Name,bool Reap)
+bool ExecWait(pid_t Pid,const char *Name,bool Reap)
 {
    if (Pid <= 1)
       return true;
@@ -352,7 +356,7 @@ bool ExecWait(int Pid,const char *Name,bool Reap)
       if (Reap == true)
         return false;
       
-      return _error->Error(_("Waited, for %s but it wasn't there"),Name);
+      return _error->Error(_("Waited for %s but it wasn't there"),Name);
    }
 
    
@@ -403,6 +407,11 @@ bool FileFd::Open(string FileName,OpenMode Mode, unsigned long Perms)
       case WriteAny:
       iFd = open(FileName.c_str(),O_RDWR | O_CREAT,Perms);
       break;      
+
+      case WriteTemp:
+      unlink(FileName.c_str());
+      iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_EXCL,Perms);
+      break;
    }  
 
    if (iFd < 0)
@@ -426,10 +435,13 @@ 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);
@@ -443,6 +455,8 @@ 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);
    
@@ -450,7 +464,7 @@ bool FileFd::Read(void *To,unsigned long Size,bool AllowEof)
       return true;
    
    // Eof handling
-   if (AllowEof == true)
+   if (Actual != 0)
    {
       Flags |= HitEof;
       return true;