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/*
* YAFFS: Yet another FFS. A NAND-flash specific file system.
*
* Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Timothy Manning <timothy@yaffs.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* message_buffer.c contains code for a message buffer .
*/
#include "message_buffer.h"
void append_to_buffer(buffer *p_Buffer, char *message,char message_level,char print){
/*wrapper function for add_to_buffer_root_function*/
add_to_buffer_root_function(p_Buffer,message, message_level,APPEND_MESSAGE,print);
}
void add_to_buffer(buffer *p_Buffer, char *message,char message_level,char print){
/*wrapper function for add_to_buffer_root_function*/
add_to_buffer_root_function(p_Buffer,message, message_level,DO_NOT_APPEND_MESSAGE,print);
}
void add_int_to_buffer(buffer *p_Buffer, int num,char message_level,char print){
char message[20];
sprintf(message, "%d",num);
add_to_buffer_root_function(p_Buffer,message, message_level,DO_NOT_APPEND_MESSAGE,print);
}
void append_int_to_buffer(buffer *p_Buffer, int num,char message_level,char print){
char message[20];
sprintf(message, "%d",num);
add_to_buffer_root_function(p_Buffer,message, message_level,APPEND_MESSAGE,print);
}
void add_to_buffer_root_function(buffer *p_Buffer, char *message,char message_level,char append,char print){
FILE *log_handle;
if (append==APPEND_MESSAGE){ /* append current message*/
strncat(p_Buffer->message[p_Buffer->head],message,BUFFER_MESSAGE_LENGTH);
}
else {
/*move the head up one. the head always points at the last written data*/
p_Buffer->head++;
/*printf("p_Buffer->tail=%d\n",p_Buffer->tail);*/
/*printf("p_Buffer->head=%d\n",p_Buffer->head);*/
if (p_Buffer->head >=BUFFER_SIZE-1) {
/*printf("buffer overflow\n");*/
p_Buffer->head -= (BUFFER_SIZE-1); /*wrap the head around the buffer*/
/*printf("new p_Buffer->head=%d\n",p_Buffer->head);*/
}
/*if the buffer is full then delete last entry by moving the tail*/
if (p_Buffer->head==p_Buffer->tail){
/*printf("moving buffer tail from %d to ",p_Buffer->tail);*/
p_Buffer->tail++;
if (p_Buffer->tail >=BUFFER_SIZE) p_Buffer->tail -= BUFFER_SIZE;/*wrap the tail around the buffer*/
/*printf("%d\n",p_Buffer->tail);*/
}
p_Buffer->message_level[p_Buffer->head]=message_level; /*copy the message level*/
strncpy(p_Buffer->message[p_Buffer->head],message,BUFFER_MESSAGE_LENGTH); /*copy the message*/
/*printf("copied %s into p_Buffer->message[p_Buffer->head]: %s\n",message,p_Buffer->message[p_Buffer->head]);
printf("extra %s\n",p_Buffer->message[p_Buffer->head]);*/
}
if ((p_Buffer->message_level[p_Buffer->head]<=DEBUG_LEVEL)&& (print==PRINT)){
/*printf("printing buffer 1\n");
// the print buffer function is not working this is just a quick fix
print_buffer(p_Buffer,1); //if the debug level is higher enough then print the new message
*/
printf("%s\n",p_Buffer->message[p_Buffer->head]);
log_handle=fopen(LOG_FILE,"a");
if (log_handle!=NULL){
fputs(p_Buffer->message[p_Buffer->head],log_handle);
fputs("\n",log_handle);
fclose(log_handle);
}
}
}
void print_buffer(buffer *p_Buffer, int number_of_messages_to_print){
int x=0;
int i=0;
printf("print buffer\n");
printf("buffer head:%d\n",p_Buffer->head);
printf("buffer tail:%d\n",p_Buffer->tail);
if (number_of_messages_to_print==PRINT_ALL) number_of_messages_to_print=BUFFER_SIZE;
// printf("number_of_messages_to_print=%d\n",number_of_messages_to_print);
for (i=0,x=0; (x>=p_Buffer->tail) && (i<number_of_messages_to_print); i++, x--){
// printf("printing buffer\n");
// printf("x:%d\n",x);
if (x<0) x = BUFFER_SIZE-1; /*wrap x around buffer*/
printf("%s\n",p_Buffer->message[p_Buffer->head]);
printf("printed buffer\n");
}
}
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