Changeset 4129 for trunk/tools/common/kFile.cpp

Timestamp:

Aug 31, 2000, 5:00:13 AM (25 years ago)

Author:

bird

Message:

Fixes and enhancements.

File:

• trunk/tools/common/kFile.cpp (modified) (14 diffs)

trunk/tools/common/kFile.cpp

@@ -1 @@
-/* $Id: kFile.cpp,v 1.3 2000-05-29 19:45:57 bird Exp $
+/* $Id: kFile.cpp,v 1.4 2000-08-31 03:00:12 bird Exp $
  *
  * kFile - Simple (for the time being) file class.
@@ -39 +39 @@
     if (!fStatusClean)
     {
-        rc = (int)DosQueryFileInfo(hFile, FIL_QUERYEASIZE, &filestatus, sizeof(filestatus));
+        rc = DosQueryFileInfo(hFile, FIL_QUERYEASIZE, &filestatus, sizeof(filestatus));
         fStatusClean = (rc == NO_ERROR);
         if (!fStatusClean && fThrowErrors)
-            throw (rc);
+            throw ((int)rc);
     }
     else
@@ -64 +64 @@
     {
         ULONG   off;
-        rc = (int)DosSetFilePtr(hFile, offVirtual, FILE_BEGIN, &off);
+        rc = DosSetFilePtr(hFile, offVirtual, FILE_BEGIN, &off);
         if (rc != NO_ERROR || off != offVirtual)
         {
             if (fThrowErrors)
-                throw (rc);
+                throw ((int)rc);
             return FALSE;
         }
@@ -86 +86 @@
  *                              FALSE: Open the file readwrite appending
  *                                     existing files.
- * @author    knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
+ * @author      knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
  */
 kFile::kFile(const char *pszFilename, BOOL fReadOnly/*=TRUE*/)
@@ -93 +93 @@
     fThrowErrors(FALSE),
     offVirtual(0),
-    offReal(0)
+    offReal(0),
+    pszFilename(NULL)
 {
     ULONG   fulOpenFlags;
@@ -113 +114 @@
     }
 
-    rc = (int)DosOpen((PCSZ)pszFilename, &hFile, &ulAction, 0, FILE_NORMAL,
-                      fulOpenFlags, fulOpenMode, NULL);
+    rc = DosOpen((PCSZ)pszFilename, &hFile, &ulAction, 0, FILE_NORMAL,
+                 fulOpenFlags, fulOpenMode, NULL);
     if (rc != NO_ERROR)
-        throw (rc);
+        throw ((int)rc);
 
     if (!refreshFileStatus())
-        throw (rc);
+        throw ((int)rc);
+
+    char szFullName[CCHMAXPATH];
+    if (DosQueryPathInfo(pszFilename, FIL_QUERYFULLNAME, szFullName, sizeof(szFullName)))
+        strcpy(szFullName, pszFilename);
+    this->pszFilename = strdup(szFullName);
+    if (this->pszFilename == NULL)
+        throw (ERROR_NOT_ENOUGH_MEMORY);
 }
 
@@ -143 +151 @@
     {
         ULONG   cbRead;
-        rc = (int)DosRead(hFile, pvBuffer, cbBuffer, &cbRead);
+        rc = DosRead(hFile, pvBuffer, cbBuffer, &cbRead);
         if (rc == NO_ERROR)
         {
@@ -152 +160 @@
 
     if (fThrowErrors)
-        throw (rc);
+        throw ((int)rc);
     return FALSE;
 }
@@ -171 +179 @@
 
 /**
+ * Reads the entire file into a single memory block.
+ * (The memory block has a '\0' at the end just in case you
+ *  are using it as a long string.)
+ * @returns     Pointer to file in memory.
+ */
+void *          kFile::readFile() throw(int)
+{
+    void *pv;
+
+    /* allocate memory for the file */
+    pv = calloc((size_t)this->getSize() + 1, 1);
+    if (pv == NULL)
+    {
+        if (fThrowErrors)
+            throw(ERROR_NOT_ENOUGH_MEMORY);
+        return NULL;
+    }
+
+    /* go the start of the file and read it. */
+    if (start() && read(pv, this->getSize()))
+        return pv; // successfull exit!
+
+    /* we failed, cleanup and return NULL */
+    free(pv);
+    return NULL;
+}
+
+
+/**
  * Writes <cbBuffer> bytes to the file at the current file position.
  * @returns     success indicator. (TRUE/FALSE)
@@ -186 +223 @@
             ULONG   cbWrote;
 
-            rc = (int)DosWrite(hFile, pvBuffer, cbBuffer, &cbWrote);
+            rc = DosWrite(hFile, pvBuffer, cbBuffer, &cbWrote);
             if (rc == NO_ERROR)
             {
@@ -197 +234 @@
 
     if (fThrowErrors)
-        throw(rc);
+        throw ((int)rc);
     return FALSE;
 }
@@ -253 +290 @@
     free(pszBuffer);
 
-    return getPos() - offStart;
-}
-
+    return (int)(getPos() - offStart);
+}
+
+
+/**
+ * Sets the filesize.
+ * @returns     Success indicator.
+ * @param       cbFile      New filesize.
+ *                          Defaults to 0xffffffff, which results in
+ *                          cutting the file at the current position.
+ */
+BOOL            kFile::setSize(unsigned long cbFile/*= ~0UL*/)
+{
+    if (cbFile == ~0UL)
+        cbFile = offVirtual;
+    rc = DosSetFileSize(hFile, cbFile);
+    if (rc != NO_ERROR && fThrowErrors)
+        throw ((int)rc);
+
+    return rc == NO_ERROR;
+}
 
 
@@ -280 +335 @@
 
     if (fThrowErrors)
-        throw(rc);
+        throw ((int)rc);
     return FALSE;
 }
@@ -306 +361 @@
     }
     if (fThrowErrors)
-        throw(rc);
+        throw ((int)rc);
     return FALSE;
 }