Assignment1 added

Author: sdutta9

_DS_Store

@@ -0,0 +1,36 @@
+#include "dberror.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+char *RC_message;
+
+/* print a message to standard out describing the error */
+void 
+printError (RC error)
+{
+  if (RC_message != NULL)
+    printf("EC (%i), \"%s\"\n", error, RC_message);
+  else
+    printf("EC (%i)\n", error);
+}
+
+char *
+errorMessage (RC error)
+{
+  char *message;
+
+  if (RC_message != NULL)
+    {
+      message = (char *) malloc(strlen(RC_message) + 30);
+      sprintf(message, "EC (%i), \"%s\"\n", error, RC_message);
+    }
+  else
+    {
+      message = (char *) malloc(30);
+      sprintf(message, "EC (%i)\n", error);
+    }
+
+  return message;
+}

dberror.c

@@ -0,0 +1,58 @@
+#ifndef DBERROR_H
+#define DBERROR_H
+
+#include "stdio.h"
+
+/* module wide constants */
+#define PAGE_SIZE 4096
+
+/* return code definitions */
+typedef int RC;
+
+#define RC_OK 0
+#define RC_FILE_NOT_FOUND 1
+#define RC_FILE_HANDLE_NOT_INIT 2
+#define RC_WRITE_FAILED 3
+#define RC_READ_NON_EXISTING_PAGE 4
+#define RC_ERROR 5 //added by Rakesh
+
+#define RC_RM_COMPARE_VALUE_OF_DIFFERENT_DATATYPE 200
+#define RC_RM_EXPR_RESULT_IS_NOT_BOOLEAN 201
+#define RC_RM_BOOLEAN_EXPR_ARG_IS_NOT_BOOLEAN 202
+#define RC_RM_NO_MORE_TUPLES 203
+#define RC_RM_NO_PRINT_FOR_DATATYPE 204
+#define RC_RM_UNKOWN_DATATYPE 205
+
+#define RC_IM_KEY_NOT_FOUND 300
+#define RC_IM_KEY_ALREADY_EXISTS 301
+#define RC_IM_N_TO_LAGE 302
+#define RC_IM_NO_MORE_ENTRIES 303
+
+/* holder for error messages */
+extern char *RC_message;
+
+/* print a message to standard out describing the error */
+extern void printError (RC error);
+extern char *errorMessage (RC error);
+
+#define THROW(rc,message) \
+  do {			  \
+    RC_message=message;	  \
+    return rc;		  \
+  } while (0)		  \
+
+// check the return code and exit if it is an error
+#define CHECK(code)							\
+  do {									\
+    int rc_internal = (code);						\
+    if (rc_internal != RC_OK)						\
+      {									\
+	char *message = errorMessage(rc_internal);			\
+	printf("[%s-L%i-%s] ERROR: Operation returned error: %s\n",__FILE__, __LINE__, __TIME__, message); \
+	free(message);							\
+	exit(1);							\
+      }									\
+  } while(0);
+
+
+#endif

dberror.h

@@ -0,0 +1,31 @@
+CC = gcc
+CFLAGS  = -g -Wall 
+ 
+default: test1
+
+test1: test_assign1_1.o storage_mgr.o dberror.o 
+	$(CC) $(CFLAGS) -o test1 test_assign1_1.o storage_mgr.o dberror.o -lm
+
+test2: test_assign1_2.o storage_mgr.o dberror.o 
+	$(CC) $(CFLAGS) -o test2 test_assign1_2.o storage_mgr.o dberror.o -lm
+
+test_assign1_1.o: test_assign1_1.c dberror.h storage_mgr.h test_helper.h
+	$(CC) $(CFLAGS) -c test_assign1_1.c -lm
+
+test_assign1_2.o: test_assign1_2.c dberror.h storage_mgr.h test_helper.h
+	$(CC) $(CFLAGS) -c test_assign1_2.c -lm
+
+storage_mgr.o: storage_mgr.c storage_mgr.h 
+	$(CC) $(CFLAGS) -c storage_mgr.c -lm
+
+dberror.o: dberror.c dberror.h 
+	$(CC) $(CFLAGS) -c dberror.c
+
+clean: 
+	$(RM) test1 test2 *.o *~
+
+run:
+	./test1
+
+run2:
+	./test2