update CLib

git-svn-id: svn://kolibrios.org@614 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-08-28 10:31:46 +00:00
parent 52facee6d5
commit 3be3768ce0
98 changed files with 9908 additions and 0 deletions
--- a/watcom/trunk/clib/handleio/read.c
+++ b/watcom/trunk/clib/handleio/read.c
@@ -0,0 +1,135 @@
+/****************************************************************************
+*
+*                            Open Watcom Project
+*
+*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
+*
+*  ========================================================================
+*
+*    This file contains Original Code and/or Modifications of Original
+*    Code as defined in and that are subject to the Sybase Open Watcom
+*    Public License version 1.0 (the 'License'). You may not use this file
+*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
+*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
+*    provided with the Original Code and Modifications, and is also
+*    available at www.sybase.com/developer/opensource.
+*
+*    The Original Code and all software distributed under the License are
+*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
+*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
+*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
+*    NON-INFRINGEMENT. Please see the License for the specific language
+*    governing rights and limitations under the License.
+*
+*  ========================================================================
+*
+* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
+*               DESCRIBE IT HERE!
+*
+****************************************************************************/
+
+
+#include "variety.h"
+#include <stdio.h>
+#include <io.h>
+#include <fcntl.h>
+#include <errno.h>
+#include "iomode.h"
+#include "fileacc.h"
+#include "rtcheck.h"
+#include "rtdata.h"
+#include "seterrno.h"
+#include "lseek.h"
+
+typedef struct 
+{
+  char     *name;
+  unsigned int offset;
+}__file_handle;
+
+
+int _stdcall read_file (const char *name,char *buff,unsigned offset, unsigned count,unsigned *reads);
+
+_WCRTLINK int read( int handle, void *buf, unsigned len )
+{
+    unsigned read_len, total_len;
+    unsigned reduce_idx, finish_idx;
+    unsigned iomode_flags;
+    char *buffer = buf;
+    BOOL    rc;
+    HANDLE  h;
+    unsigned amount_read;
+    __file_handle *fh;
+
+    __handle_check( handle, -1 );
+    __ChkTTYIOMode( handle );
+    iomode_flags = __GetIOMode( handle );
+    if( iomode_flags == 0 )
+    {
+        __set_errno( EBADF );
+        return( -1 );
+    }
+    if( !(iomode_flags & _READ) )
+    {
+        __set_errno( EACCES );     /* changed from EBADF to EACCES 23-feb-89 */
+        return( -1 );
+    }
+
+
+    fh = (__file_handle*) __getOSHandle( handle );
+ 
+    if( iomode_flags & _BINARY )   /* if binary mode */
+    {
+
+      if(read_file(fh->name,buffer,fh->offset,len,&amount_read))
+      {
+        if ( amount_read == 0)
+          return (-1);   
+      }
+      fh->offset+=amount_read;
+      total_len = amount_read;
+    }
+    else
+    {
+        total_len = 0;
+        read_len = len;
+        do
+        {
+          if(read_file(fh->name,buffer,fh->offset,len,&amount_read))
+          {
+            if( amount_read == 0 )
+            {                    /* EOF */
+                break;
+            }
+          }  
+          reduce_idx = 0;
+          finish_idx = reduce_idx;
+          for( ; reduce_idx < amount_read; ++reduce_idx )
+          {
+            if( buffer[ reduce_idx ] == 0x1a )     /* EOF */
+            {
+               __lseek( handle,
+                           ((long)reduce_idx - (long)amount_read)+1L,
+                           SEEK_CUR );
+               total_len += finish_idx;
+               return( total_len );
+            }
+            if( buffer[ reduce_idx ] != '\r' )
+            {
+                buffer[ finish_idx++ ] = buffer[ reduce_idx ];
+            };    
+          }
+
+          total_len += finish_idx;
+          buffer += finish_idx;
+          read_len -= finish_idx;
+          if( iomode_flags & _ISTTY )
+          {
+                break;  /* 04-feb-88, FWC */
+          }
+        } while( read_len != 0 );
+    }
+    return( total_len );
+}
+