csu3_am335x/EVSE/Modularization/ocppfiles/hashmap.c

/*
 * hashmap.c
 *
 *  Created on: 2019 ~4  27  
 *      Author: foluswen
 */
#include "Module_OcppBackend.h"

typedef enum boolean { FALSE, TRUE } BOOL;
static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;


int MessageSent_add(char *uuid, char *data)
{
	FILE *outfile;
	char rmFileCmd[100]={0};
	struct stat stats;
	char tempstring[100]={0};

	stat("/Storage/OCPP", &stats);
	// Check for directory existence
	if (S_ISDIR(stats.st_mode) == 1)
	{
		//printf("\n directory exist \n");
	}
	else
	{
		printf("\n directory not exist, create dir \n");
		sprintf(rmFileCmd,"mkdir -p %s","/Storage/OCPP");
		system(rmFileCmd);
	}

	memset(&rmFileCmd, 0, sizeof rmFileCmd);

	if((access("/Storage/OCPP/MessageSent",F_OK))!=-1)
	{
		//printf("MessageSent exist.\n");
	}
	else
	{
		printf("MessageSent not exist\n");
		FILE *log = fopen("/Storage/OCPP/MessageSent", "w+");

		if(log == NULL)
		{
			printf("Can't Create File MessageSent \n");
			return 0;
		}
		else
		{
			fclose(log);
		}
	}

	// open file for writing
	outfile = fopen ("/Storage/OCPP/MessageSent", "a");
	sprintf(tempstring,"%s,%s\n", uuid,data);
	fputs(tempstring, outfile);
	fclose (outfile);
	//printf("MessageSent add\n");
	return 1;
}

int MessageSent_get(char *uuid, char *data)
{
	FILE *fp;
	int result = FALSE; // 1: TRUE  0:FALSE
	char str[1200]={0};
	char sstr[50]={ 0 }, datastr[30]={0};//sstr[200]={ 0 };
	//int pos = 0, l = 0, c = 0;
	int c = 0;
	char *loc;
	char rmFileCmd[100]={0};
	struct stat stats;
	stat("/Storage/OCPP", &stats);

	// Check for directory existence
	if (S_ISDIR(stats.st_mode) == 1)
	{
		//printf("\n directory exist \n");
	}
	else
	{
		printf("\n directory not exist, create dir \n");
		sprintf(rmFileCmd,"mkdir -p %s","/Storage/OCPP");
		system(rmFileCmd);
	}

	memset(&rmFileCmd, 0, sizeof rmFileCmd);

	if((access("/Storage/OCPP/MessageSent",F_OK))!=-1)
	{
		//printf("MessageSent exist.\n");
	}
	else
	{
		printf("MessageSent not exist\n");
		FILE *log = fopen("/Storage/OCPP/MessageSent", "w+");

		if(log == NULL)
		{
			printf("Can't Create File MessageSent \n");
			return 0;
		}
		else
		{
			fclose(log);
		}
	}


	/* opening file for reading */
	fp = fopen("/Storage/OCPP/MessageSent" , "r");
	if(fp == NULL) {
		printf("Error opening file");
		return FALSE;
	}

	c = fgetc(fp);
	//printf("c:%d\n",c);
	rewind(fp);

	if(c == EOF)
	{
		printf("MessageSent is null\n");
		//strcpy(uuid,"");
		strcpy(data,"");
		result = FALSE;
	}
	else
	{
		result = FALSE;
		while (fgets (str, 1200, fp)!=NULL)
		{
			//printf("Orignal File get strings \n");
			str[strlen(str) - 1] = '\0'; // eat the newline fgets() stores

			/* writing content to stdout */
			//puts(str);
			//printf("str[0]=%c\n",str[0]);

			/*********************uuid***************/
			int d = 0;
			while (str[d] != ',')
			{
				sstr[d] = str[d];
				d=d+ 1;
			}
			sstr[d] = '\0';

			//printf("sstr=%s\n",sstr);
			//printf("uuid=%s\n",uuid);

			if(strcmp(sstr, uuid) == 0)
			{
				//printf("\n uuid:%s compare all right!!! ", sstr);

				loc = strstr(str, ",");
				memset(sstr ,0, sizeof(sstr) );
				int e = 0;
				while (loc[1+e] != '\0')
				{
					datastr[e] = loc[1+e];
					e++;
				}
				datastr[e] = '\0';

				//printf("\n data:%s", datastr);
				//strcpy(uuid,sstr);
				strcpy(data,datastr);
				result = TRUE;
				break;
			}


		}
	}


	fclose(fp);
	return result;

}

int MessageSent_remove(char *uuid, char *data)
{
char tempfile[] = "/Storage/OCPP/temp1.json";
FILE *infile;
FILE *outfile;
int  resultRename=0;
char filename[60]={0};
char rmFileCmd[100]={0};
char tempstring[100]={0};
struct stat stats;
stat("../Storage/OCPP", &stats);

// Check for directory existence
if (S_ISDIR(stats.st_mode) == 1)
{
	//printf("\n directory exist \n");
}
else
{
	printf("\n directory not exist, create dir \n");
	sprintf(rmFileCmd,"mkdir -p %s","../Storage/OCPP");
	system(rmFileCmd);
}

memset(&rmFileCmd, 0, sizeof rmFileCmd);

if((access("/Storage/OCPP/MessageSent",F_OK))!=-1)
{
	//printf("MessageSent exist.\n");
}
else
{
	printf("MessageSent not exist\n");
	FILE *log = fopen("/Storage/OCPP/MessageSent", "w+");

	if(log == NULL)
	{
		printf("log is NULL\n");
		return 0;
	}
	else
	{
		fclose(log);
	}
}


sprintf(tempstring,"%s,%s", uuid,data);

// open file for writing
strcpy(filename, "/Storage/OCPP/MessageSent");
infile = fopen ("/Storage/OCPP/MessageSent", "r");
outfile = fopen (tempfile, "w");

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//DEBUG_INFO("feof(infile) =%d\n",feof(infile));
int c;
c = fgetc(infile);
//printf("file c:%d\n",c);
rewind(infile);

if(c == EOF)
{
	printf("MessageSent is  NULL\n");

	fclose(infile);
	fclose(outfile);

	sprintf(rmFileCmd,"rm -f %s",tempfile);
	system(rmFileCmd);
}
else
{
	char buf[1200]={0};

	//int i = 0;
	//printf("Orignal File is not NULL\n");
	while (fgets(buf, sizeof(buf), infile) != NULL)
	{
		//printf("Orignal File get strings \n");
		buf[strlen(buf) - 1] = '\0'; // eat the newline fgets() stores

		//printf("buf=%s\n",buf);
		//printf("tempstring=%s\n",tempstring);
		//if(i != 0)
		if(strcmp(tempstring, buf)== 0)
		{
			//printf("Remove OK ! \n");
		}
		else
		{
			fprintf(outfile,"%s\n", buf);
		}

		//i = i + 1;
	}

	fclose(infile);
	fclose(outfile);

	sprintf(rmFileCmd,"rm -f %s",filename);
	system(rmFileCmd);

	resultRename = rename(tempfile, filename);

	if(resultRename == 0)
	{
		//printf("File renamed successfully");
	}
	else
	{
		printf("Error: unable to rename the file");
	}
}

return 0;

}

int hashmap_operation(int type, char *uuid, char *data)
{
	pthread_mutex_lock(&m);
	int result=0;

	if(type == HASH_OP_ADD)
		result = MessageSent_add(uuid, data);
	else if(type  == HASH_OP_GET)
		result = MessageSent_get(uuid,data);
	else if(type == HASH_OP_REMOVE)
		result = MessageSent_remove(uuid, data);
	pthread_mutex_unlock(&m);
	return result;
}