linux应用程序_1_文本浏览器_9_网络打印_3_debug_manager

linux应用程序_1_文本浏览器_9_网络打印_3_debug_manager

前面一直使用串口输出调试信息，本篇开始添加网络打印调试信息功能。

仿照内核打印调试信息的方式，这里也设定0-7这8个打印等级，数字越小，等级越高，只有指定等级以下的调试信息能够被打印，打印等级、打印通道（从串口、网络两种方式）由客户端发送指令设置

为调试信息模块抽象一个结构体

typedef struct DebugOpr {
	char *pcName;

	int iCanUse;
	
	int (*DebugInit)(void);
	int (*DebugExit)(void);
	int (*DebugPrint)(char *pcData);
	
	struct DebugOpr *ptNext;
}T_DebugOpr, *PT_DebugOpr;

注册、入口出口、初始化等函数同前面类似

打印接口：

1、将调试信息存入缓存

2、比较打印等级，不满足打印等级则退出

3、选择可以使用的打印通道进行打印

int DebugPrint(const char *pcFormat, ...)
{
	va_list tArg;
	PT_DebugOpr ptDebugOprTmp = g_ptDebugOpr;
	char pcBuf[1024];
	int iLen;
	char *pcBufTmp = pcBuf;
	int iPrintLevel = DEFAULT_DBGLEVEL;
	
	va_start (tArg, pcFormat);
	iLen = vsprintf (pcBuf, pcFormat, tArg);
	va_end (tArg);

	if(pcBuf[0] == '<' && pcBuf[2] == '>')
	{
		iPrintLevel = pcBuf[1] - '0';
		if(iPrintLevel < 8 && iPrintLevel >= 0)
			pcBufTmp += 3;
		else
			iPrintLevel = DEFAULT_DBGLEVEL;
	}

	if(iPrintLevel > g_iPrintLevel)
		return -1;

	while(ptDebugOprTmp)
	{
		if(ptDebugOprTmp->iCanUse)
			ptDebugOprTmp->DebugPrint(pcBuf);
		ptDebugOprTmp = ptDebugOprTmp->ptNext;
	}

	return iLen;
}

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附代码：

debug_manager.h

#ifndef __DEBUG_MANAGER_H
#define __DEBUG_MANAGER_H

#define	APP_EMERG	"<0>"	/* system is unusable			*/
#define	APP_ALERT	"<1>"	/* action must be taken immediately	*/
#define	APP_CRIT	"<2>"	/* critical conditions			*/
#define	APP_ERR	    "<3>"	/* error conditions			*/
#define	APP_WARNING	"<4>"	/* warning conditions			*/
#define	APP_NOTICE	"<5>"	/* normal but significant condition	*/
#define	APP_INFO	"<6>"	/* informational			*/
#define	APP_DEBUG	"<7>"	/* debug-level messages			*/

#define DEFAULT_DBGLEVEL  4


typedef struct DebugOpr {
	char *pcName;

	int iCanUse;
	
	int (*DebugInit)(void);
	int (*DebugExit)(void);
	int (*DebugPrint)(char *pcData);
	
	struct DebugOpr *ptNext;
}T_DebugOpr, *PT_DebugOpr;

int DebugPrint(const char *pcFormat, ...);
int SetDebugCanUse(char *pcBuf);
int SetDebugLevel(char *pcBuf);

int RegisterDebugOpr(PT_DebugOpr ptDebugOpr);
PT_DebugOpr GetDebugOpr(char *pcName);
void ShowDebugOpr(void);
int DebugInit(void);
int ReallyDebugInit(void);
void DebugExit(void);
int StdoutInit(void);
int NetInit(void);

#endif

debug_manager.c

#include <debug_manager.h>
#include <config.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>


static PT_DebugOpr g_ptDebugOpr;

static int g_iPrintLevel = 8;


int RegisterDebugOpr(PT_DebugOpr ptDebugOpr)
{
	PT_DebugOpr ptDebugOprTmp;

	if(!g_ptDebugOpr)
	{
		g_ptDebugOpr = ptDebugOpr;
		return 0;
	}

	ptDebugOprTmp = g_ptDebugOpr;

	while(ptDebugOprTmp->ptNext)
	{
		ptDebugOprTmp = ptDebugOprTmp->ptNext;
	}
	ptDebugOprTmp->ptNext = ptDebugOpr;	

	return 0;
}

PT_DebugOpr GetDebugOpr(char *pcName)
{
	PT_DebugOpr ptDebugOprTmp = g_ptDebugOpr;

	
	while(ptDebugOprTmp)
	{
		if(strcmp(ptDebugOprTmp->pcName, pcName) == 0)
		{
			return ptDebugOprTmp;
		}
		ptDebugOprTmp = ptDebugOprTmp->ptNext;
	}
	return NULL;
}

void ShowDebugOpr(void)
{
	PT_DebugOpr ptDebugOprTmp = g_ptDebugOpr;
	int iCnt = 0;

	printf("\r\n");	
	printf("supported debug:\r\n");
	while(ptDebugOprTmp)
	{
		printf("%02d : %s\r\n",++iCnt, ptDebugOprTmp->pcName);
		ptDebugOprTmp = ptDebugOprTmp->ptNext;
	}
}

int SetDebugCanUse(char *pcBuf)
{
	char *pcTmp;
	char strOprName[20];
	PT_DebugOpr ptTmp;

	pcTmp = strchr(pcBuf, '=');
	if(!pcTmp)
		return -1;
	strncpy(strOprName, pcBuf + sizeof("set") - 1, pcTmp - (pcBuf + sizeof("set") - 1));
	strOprName[pcTmp - (pcBuf + sizeof("set") - 1)] = '\0';
	
	ptTmp = GetDebugOpr(strOprName);
	if(!ptTmp)
		return -1;

	if(pcTmp[1] == '0')
		ptTmp->iCanUse = 0;
	else if(pcTmp[1] == '1')
		ptTmp->iCanUse = 1;
	else 
		return -1;
	
	return 0;
}

int SetDebugLevel(char *pcBuf)
{
	if(strncmp(pcBuf, "setdebuglevel=", strlen("setdebuglevel=")))
		return -1;

	g_iPrintLevel = pcBuf[strlen("setdebuglevel=")] - '0';
	return 0;
}

int DebugPrint(const char *pcFormat, ...)
{
	va_list tArg;
	PT_DebugOpr ptDebugOprTmp = g_ptDebugOpr;
	char pcBuf[1024];
	int iLen;
	char *pcBufTmp = pcBuf;
	int iPrintLevel = DEFAULT_DBGLEVEL;
	
	va_start (tArg, pcFormat);
	iLen = vsprintf (pcBuf, pcFormat, tArg);
	va_end (tArg);

	if(pcBuf[0] == '<' && pcBuf[2] == '>')
	{
		iPrintLevel = pcBuf[1] - '0';
		if(iPrintLevel < 8 && iPrintLevel >= 0)
			pcBufTmp += 3;
		else
			iPrintLevel = DEFAULT_DBGLEVEL;
	}

	if(iPrintLevel > g_iPrintLevel)
		return -1;

	while(ptDebugOprTmp)
	{
		if(ptDebugOprTmp->iCanUse)
			ptDebugOprTmp->DebugPrint(pcBuf);
		ptDebugOprTmp = ptDebugOprTmp->ptNext;
	}

	return iLen;
}

int DebugInit(void)
{
	int iError = 1;
	
	iError  = StdoutInit();
	
	iError &= NetInit();

	return iError;
}

int ReallyDebugInit(void)
{
	int iError = 1;
	
	PT_DebugOpr ptDebugOprTmp = g_ptDebugOpr;
	
	while(ptDebugOprTmp)
	{	
		if(ptDebugOprTmp->DebugInit)
		{
			iError &= ptDebugOprTmp->DebugInit();
		}
		ptDebugOprTmp = ptDebugOprTmp->ptNext;
	}	
	
	return iError;
}

void DebugExit(void)
{
	PT_DebugOpr ptDebugOprTmp = g_ptDebugOpr;


	while(ptDebugOprTmp)
	{		
		if(ptDebugOprTmp->DebugExit)
		{
			ptDebugOprTmp->DebugExit();
		}
		ptDebugOprTmp = ptDebugOprTmp->ptNext;
	}	
}