[ros-diffs] [akhaldi] 63226: [CRT] * Update _ftelli64() * Fixes a couple msvcrt tests. CORE-8080

Author: akhaldi
Date: Sun May 11 10:45:02 2014
New Revision: 63226
URL: http://svn.reactos.org/svn/reactos?rev=63226&view=rev
Log:
[CRT]
* Update _ftelli64()
* Fixes a couple msvcrt tests.
CORE-8080
Modified:
    trunk/reactos/lib/sdk/crt/stdio/file.c
Modified: trunk/reactos/lib/sdk/crt/stdio/file.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/sdk/crt/stdio/file.c?r…
==============================================================================
--- trunk/reactos/lib/sdk/crt/stdio/file.c      [iso-8859-1] (original)
+++ trunk/reactos/lib/sdk/crt/stdio/file.c      [iso-8859-1] Sun May 11 10:45:02 2014
@@ -83,6 +83,7 @@
 /* values for wxflag in file descriptor */
 #define WX_OPEN           0x01
 #define WX_ATEOF          0x02
+#define WX_READNL         0x04  /* read started with \n */
 #define WX_READEOF        0x04  /* like ATEOF, but for underlying file rather than buffer
*/
 #define WX_READCR         0x08  /* underlying file is at \r */
 #define WX_DONTINHERIT    0x10
@@ -2894,13 +2895,79 @@
  */
 __int64 CDECL _ftelli64(FILE* file)
 {
-    /* TODO: just call fgetpos and return lower half of result */
-    int off=0;
     __int64 pos;
     _lock_file(file);
     pos = _telli64(file->_file);
     if(pos == -1) {
+        _unlock_file(file);
+        return -1;
+    }
+    if(file->_bufsiz)  {
+        if(file->_flag & _IOWRT) {
+            pos += file->_ptr - file->_base;
+
+            if(get_ioinfo(file->_file)->wxflag & WX_TEXT) {
+                char *p;
+
+                for(p=file->_base; p<file->_ptr; p++)
+                    if(*p == '\n')
+                        pos++;
+            }
+        } else if(!file->_cnt) { /* nothing to do */
+        } else if(_lseeki64(file->_file, 0, SEEK_END)==pos) {
+            int i;
+
+            pos -= file->_cnt;
+            if(get_ioinfo(file->_file)->wxflag & WX_TEXT) {
+                for(i=0; i<file->_cnt; i++)
+                    if(file->_ptr[i] == '\n')
+                        pos--;
+            }
+        } else {
+            char *p;
+
+            if(_lseeki64(file->_file, pos, SEEK_SET) != pos) {
+                _unlock_file(file);
+                return -1;
+            }
+
+            pos -= file->_bufsiz;
+            pos += file->_ptr - file->_base;
+
+            if(get_ioinfo(file->_file)->wxflag & WX_TEXT) {
+                if(get_ioinfo(file->_file)->wxflag & WX_READNL)
+                    pos--;
+
+                for(p=file->_base; p<file->_ptr; p++)
+                    if(*p == '\n')
+                        pos++;
+            }
+        }
+    }
+
+    _unlock_file(file);
+    return pos;
+}
+
+/*********************************************************************
+ *             ftell (MSVCRT.@)
+ */
+LONG CDECL ftell(FILE* file)
+{
+  return (LONG)_ftelli64(file);
+}
+
+/*********************************************************************
+ *             fgetpos (MSVCRT.@)
+ */
+int CDECL fgetpos(FILE* file, fpos_t *pos)
+{
+    int off=0;
+
+    _lock_file(file);
+    *pos = _lseeki64(file->_file,0,SEEK_CUR);
+    if(*pos == -1) {
         _unlock_file(file);
         return -1;
     }
@@ -2922,50 +2989,6 @@
             }
         }
     }
-
-    _unlock_file(file);
-    return off + pos;
-}
-
-/*********************************************************************
- *             ftell (MSVCRT.@)
- */
-LONG CDECL ftell(FILE* file)
-{
-  return (LONG)_ftelli64(file);
-}
-
-/*********************************************************************
- *             fgetpos (MSVCRT.@)
- */
-int CDECL fgetpos(FILE* file, fpos_t *pos)
-{
-    int off=0;
-
-    _lock_file(file);
-    *pos = _lseeki64(file->_file,0,SEEK_CUR);
-    if(*pos == -1) {
-        _unlock_file(file);
-        return -1;
-    }
-    if(file->_bufsiz)  {
-        if( file->_flag & _IOWRT ) {
-            off = file->_ptr - file->_base;
-        } else {
-            off = -file->_cnt;
-            if (get_ioinfo(file->_file)->wxflag & WX_TEXT) {
-                /* Black magic correction for CR removal */
-                int i;
-                for (i=0; i<file->_cnt; i++) {
-                    if (file->_ptr[i] == '\n')
-                        off--;
-                }
-                /* Black magic when reading CR at buffer boundary*/
-                if(get_ioinfo(file->_file)->wxflag & WX_READCR)
-                    off--;
-            }
-        }
-    }
     *pos += off;
     _unlock_file(file);
     return 0;