changed file_put to use memcpy

temp.c

@@ -34,32 +34,28 @@ void file_del(char *key)
     int index=modulus(key,256,setSize);
     sem_wait(&mutex[index]);
     FILE * fp;
-    char * line = NULL;
+    char * line = malloc(sizeof(char)*514);
     size_t len = 0;
     int read;
 
-    fp = fdopen(fds[index], "a+");
+    fp = fdopen(fds[index], "r+b");
     if (fp == NULL)
        printf("\n[Invalid file]\n");
-    int position=0;
-    while ((read = getline(&line, &len, fp)) != -1)
+    int position=ftell(fp);
+    while (fscanf(fp,"%s",line) != EOF )
     {
-        
         if(strstr(line,key)!=NULL && strstr(strstr(line,key),":")!=NULL)
         {
+            //printf("%s\n",line);
             
-            fseek(fp,position,SEEK_SET);
-           
-            
+           printf("%d", fseek(fp, position, SEEK_SET));
+            fprintf(fp, "%s", "\0");    
             break;
+           
         }
-        else
-        {
-            position+=len;
-        }
-        
+           position=ftell(fp);
+           printf("\n%d ", position);
     }
-   //fclose(fp);
     if (line)
         free(line);
     sem_wait(&readerLocks[index]);
@@ -112,41 +108,16 @@ void file_put(char *key,char *value)
     sem_wait(&mutex[index]);
     printf("\n[Write to File: %d]\n",index);
     char line[514];
-    int i=0;
-    for(i=0;i<256;i++)
-    {
-        if(key[i]!='\0')
-        {
-            line[i]=key[i];
-        }
-        else
-        {
-            break;
-        }    
-    }
-    int k=0;
-    line[i++]=':';
-    for(;i<512;i++)
-    {
-       if(value[k]!='\0')
-        {
-            line[i]=value[k++];
-        }
-        else
-        {
-            break;
-        }    
-    }
-    line[i]='\n';
+    memcpy(line,key,256);
+    line[strlen(key)]=':';
+    memcpy(line+strlen(line),value,256);
+    line[strlen(line)]='\n';
     if(write(fds[index],line,strlen(line))<0)
     {
         printf("\n[Unable to Write to File]\n");
     }
-    
     sem_post(&mutex[index]);
 }
-
-
 int main()
 {
     /*
@@ -155,11 +126,12 @@ int main()
         PUT,DEL would use write lock 
         GET would use read lock
         each write should return the line number
-
     */
     int n2=0;
     char key[256]="24";
     char value[256]="value";
+    bzero(key+strlen(key),sizeof(key)-strlen(key));
+    bzero(value+strlen(value),sizeof(value)-strlen(value));
     fds=(int *)malloc(sizeof(int)*setSize);
     readCounters=(int *)malloc(sizeof(int)*setSize);
     readerLocks=(sem_t *)malloc(sizeof(sem_t)*setSize);