Diff: rename.h

Revision:

0:07f9467c9d46

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rename.h	Mon Apr 02 20:01:38 2012 +0000
@@ -0,0 +1,67 @@
+  //***********************************************************
+// file_rename: renames a file (via copy & delete).
+//    Moves data instead of adjusting the file name in the
+//    file directory. Checks to insure the file was renamed.
+//    Returns -1 = error; 0 = success
+//***********************************************************
+int file_rename(const char *oldfname, const char *newfname) {
+    int retval = 0;
+    int ch;
+
+    FILE *fpold = fopen(oldfname, "r");   // src file
+    FILE *fpnew = fopen(newfname, "w");   // dest file
+    
+    while (1) {                   // Copy src to dest  
+        ch = fgetc(fpold);        // until src EOF read. 
+        if (ch == EOF) break;
+        fputc(ch, fpnew);  
+    }
+    
+    fclose(fpnew);
+    fclose(fpold);
+
+    fpnew = fopen(newfname, "r"); // Reopen dest to insure
+    if(fpnew == NULL) {           // that it was created.
+        retval = (-1);            // Return Error.
+    } 
+    else {
+        fclose(fpnew);  
+        remove(oldfname);         // Remove original file.
+        retval = (0);             // Return Success.
+    }
+    return (retval);
+}
+
+//***********************************************************
+// file_copy: Copies a file
+//            Checks to insure destination file was created.
+//            Returns -1 = error; 0 = success
+//***********************************************************
+int file_copy (const char *src, const char *dst) {
+    int retval = 0;
+    int ch;
+
+    FILE *fpsrc = fopen(src, "r");   // src file
+    FILE *fpdst = fopen(dst, "w");   // dest file
+    
+    while (1) {                  // Copy src to dest
+        ch = fgetc(fpsrc);       // until src EOF read.
+        if (ch == EOF) break;
+        fputc(ch, fpdst);  
+    }
+    fclose(fpsrc);  
+    fclose(fpdst);
+  
+    fpdst = fopen(dst, "r");     // Reopen dest to insure
+    if(fpdst == NULL) {          // that it was created.
+        retval = (-1);           // Return error.
+    } 
+    else {
+        fclose(fpdst); 
+        retval = (0);            // Return success.
+    }
+    return (retval);
+}
+
+    
+ 
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