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yimian.xyz/file/ee101/as4/ftp/code/main/main.c

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/*
Name: Assesment 4 of EEE 101
File Name: main.c
Copyright: Free
Author: Group 9
Description: Program for a hotal management system.
*/
#include <stdio.h> /* Include standard library of stdio.h */
#include <stdlib.h> /* Include standard liberary of stdlib.h */
#include <conio.h> /* Include liberary of conio.h */
#include <string.h> /* Include string.h */
#include <ctype.h> /* Include ctype.h */
#include <windows.h> /* lib for include windows API such as msgbox */
#include <time.h> /* lib for getting system time */
#include <errno.h> /* lib dealing with errors */
#include <math.h> /* lib for math */
/* program title */
#define PROGRAM_TITLE "TITLE EEE101 Assessment 4 BY Group 9"
/* window color */
#define WINDOW_COLOR "color 0F"
/* window size */
#define WINDOW_SIZE "mode con cols=88 lines=30"
/* the max length of a name */
#define NAME_MAX_LENGTH 35
/* the max length of a tel */
#define TEL_MAX_LENGTH 20
/* the max length of a national ID */
#define NATIONALID_MAX_LENGTH 20
/* the max length of a nation, province/state or a city */
#define ADDRESS_MAX_LENGTH 35
/* the max visitors number in one room */
#define VISITOR_MAX_NUMBER 3
/* the name of data folder */
#define DATA_FOLDER "data"
/* the name of visitor data file */
#define VISITOR_DATA_FILE "Visitor.txt"
/* the name of room data file */
#define ROOM_DATA_FILE "Room.txt"
/* the name of visitor del file */
#define VISITOR_DEL_FILE "Del.txt"
/* the name of room del file */
#define ROOM_DEL_FILE "Dell.txt"
/* the name of signature file */
#define SIGNATURE_FILE "Signature.txt"
/* the password of data file */
#define PASSWORD 'l'
/* the digital signature key */
#define DIGITAL_SIGNATURE_KEY 'k'
/*****************declear global variables ********************/
/* variable of user name ::manager, receptionist*/
char *g_pUsr=NULL;
/* this variable indicate the rows of return struct */
int g_nRtrnRows=0;
/************** declear struct here ****************************/
typedef struct visitor
{
int id;/* unique key for identify visitor */
char name[NAME_MAX_LENGTH];
char tel[TEL_MAX_LENGTH];
unsigned int vip:2;/* 1->not vip, 2->vip */
char nationalId[NATIONALID_MAX_LENGTH];
char nation[ADDRESS_MAX_LENGTH];
char province[ADDRESS_MAX_LENGTH];
char city[ADDRESS_MAX_LENGTH];
} visitor;
typedef struct room
{
int index;
int roomId;
int date;
int visitorId[VISITOR_MAX_NUMBER+1];
/* type: 1->not availzble, 2->**level,3->***level,4->****level,5->VIP */
int type;
double price;
/* checkIn: 1->not visit, 2->visited */
unsigned int checkIn:2;
/* checkOut: 1->not out, 2->checkout */
unsigned int checkOut:2;
} room;
/************** above are the struct declearation ****************************/
/**************** here are Fundamental Functions ,please don not change these ***********************/
int input__detect_input_ASCII();
int input__get_arrow();
void print__setup();
void print__space(int nSpace);
void print__header();
void print__item(char chItem[20],int nMrk,int nSpc);
int data__generate_visitor_ID();
int data__get_current_date();
void data__check_file_path(char hint);
char *data__generate_digital_signature(char *tmp_signature);
void data__update_file_signature();
void data__check_file_signature();
int data__insert_visitor_info(struct visitor *pVstr);
int data__insert_room_info(struct room *pRm);
int *data__seek_key_word(char chKey[40], FILE *fp,int * nSeek);
void data__get_one_visitor_info(int nSeek,FILE *fp,visitor *visitor,int index);
void data__get_one_room_info(int nSeek,FILE *fp,room *pRoom,int index);
int *data__get_del_usr_info(int *deled_usr);
double *data__get_del_room_info(double *deled_usr);
struct visitor *data__get_visitor_info(char value[35],visitor *pVstr);
struct room *data__get_room_info(int index, int roomId, int date, int visitorId[], int type, double price, int checkIn, int checkOut,room *pRm);
int data__del_visitor_info(int id);
int data__del_room_info(int id,int room);
/**************** the above are Fundamental Functions ,please don not change these ***********************/
/*************here are the declearation of some demo functions***********************/
int demo__test_fundamental_functions();
int demo__menu();
void demo__print__menu(int nPnt);
void demo__data__insert_visitor_info();
void demo__data__del_visitor_info();
void demo__data__get_visitor_info();
void demo__data__insert_room_info();
void demo__data__del_room_info();
void demo__data__get_room_info();
void demo__create_visitor();
void demo__create_room();
void demo__display_all_visitors();
void demo__display_all_rooms();
/***************above are the declearation of some demo functions*********************/
/*****************please put your function declearation here!!***********************/
//void demo__hello_world(int o_O);
/*****************Above are your function declearation ^_^ ***********************/
/* main function begin */
int main(int argc, char const *argv[])
{
demo__test_fundamental_functions(); /* Don't Remove This For Test Purpose!! */
/*************Your Code Here****************/
//printf("Hellow World!\n");
/*************Your Code Above****************/
system("echo This is the END of your Main function!!!!&&pause>nul"); /* Remain you of the end of your main function */
return 0;
}
/*********** demo test function, you can find the demo of most fundamental function here ********/
/* demo guide function*/
int demo__test_fundamental_functions()
{
printf("Please Press 't' to goto test screen, or press any other key to goto your main fuction!\n");
if(input__detect_input_ASCII()=='t')
{
system("cls");/*clean the screen */
printf("1. press 'p' to goto input and print fundamental function demo.\n\n");
printf("2. press 'd' to goto data fundamental function demo.\n\n");
printf("3. press 'g' to create visitor and room data to support your own code!\n\n");
/* get user pressed key */
char tmp_getPress=input__detect_input_ASCII();
if(tmp_getPress=='p')
{
system("cls");/* clean the screen */
/* initialize the window */
print__setup();
/* quit untill press an esc*/
while(demo__menu()!=6);
/* quit the demo function */
return 0;
}
if(tmp_getPress=='d')
{
system("cls");/* clean the screen */
printf("Please select:\n\n");
printf("1. data__insert_visitor_info() demo\n\n");
printf("2. data__del_visitor_info() demo\n\n");
printf("3. data__get_visitor_info() demo\n\n\n");
printf("4. data__insert_room_info() demo\n\n");
printf("5. data__del_room_info() demo\n\n");
printf("6. data__get_room_info() demo\n\n");
tmp_getPress=input__detect_input_ASCII();
system("cls");/* clean the screen */
if(tmp_getPress=='1') demo__data__insert_visitor_info();
if(tmp_getPress=='2') demo__data__del_visitor_info();
if(tmp_getPress=='3') demo__data__get_visitor_info();
if(tmp_getPress=='4') demo__data__insert_room_info();
if(tmp_getPress=='5') demo__data__del_room_info();
if(tmp_getPress=='6') demo__data__get_room_info();
system("echo Press any key to goto main()&pause>nul");
}
if(tmp_getPress=='g')
{
system("cls");
printf("Please select:\n\n");
printf("1. Create a visitor data\n\n");
printf("2. Create a room data\n\n");
printf("3. Display all visitors\n\n");
printf("4. Display all rooms\n\n");
tmp_getPress=input__detect_input_ASCII();
system("cls");
if(tmp_getPress=='1') demo__create_visitor();
if(tmp_getPress=='2') demo__create_room();
if(tmp_getPress=='3') demo__display_all_visitors();
if(tmp_getPress=='4') demo__display_all_rooms();
system("echo Press any key to goto main()&pause>nul");
}
/* clean the screen */
system("cls");
}
return 0;
}
/* demo function for display menu, you can design your menu logic here*/
int demo__menu()
{
int nVal=54;
int nArrw=0;
do
{
/* print out the menu */
demo__print__menu(nVal%6+1);
/* detect user keyboard press*/
nArrw= input__get_arrow();
/* when input a arrow */
if(nArrw==1||nArrw==-1)
nVal+=nArrw;
/* when press enter */
if(nArrw==6)
break;
/* when press esc */
if(nArrw==9)
return 6;
}while(1);
/* return user choice by number*/
return nVal%6+1;
}
/* demo function for printing a menu ,you can design your menu here*/
void demo__print__menu(int nPnt)
{
/* clear screen */
system("cls");
/* print the screen header */
print__header();
printf("Please use Arrows on Keyboard to Choose:\n");
char chItem1[]="Choose 1";
/* function pringt__item has three parameters: display string, if it is choosed,extra space on its left*/
print__item(chItem1,(nPnt==1)?1:0,0);
char chItem2[]="Choose 2";
print__item(chItem2,(nPnt==2)?1:0,0);
char chItem3[]="Choose 3";
print__item(chItem3,(nPnt==3)?1:0,0);
char chItem4[]="Choose 4";
print__item(chItem4,(nPnt==4)?1:0,0);
char chItem5[]="Choose 5";
print__item(chItem5,(nPnt==5)?1:0,0);
char chItem6[]="Exit ";
print__item(chItem6,(nPnt==6)?1:0,0);
printf("\n\n\n\n\n\n\n\n\n\n\n\n\n");
printf("Press ESC to Exit!");
}
/* demo for data_insert visitor_info() */
void demo__data__insert_visitor_info()
{
printf("Demo 1:\nThis demo will create a visitor file of yimian. \nto begin with this function, you need a visitor struct which include the visitor info you want to insert. \nYou can see this code in demo__data_insert_visitor_info() function\n\n");
/* Create a new visitor struct variable with some user info */
visitor demo_NewVisitor={0/*this is the visitor id, please leave 0 here */,"yimian Liu"/*name*/,"18118155257"/*tel*/,1/*vip*/,"370902199909041813"/*nationalId*/,"china"/*nation*/,"shandong"/*province*/,"taian"/*city*/};
/* excute the data__insert_visitor_info function and when the function crash, print the error info on screen */
if(data__insert_visitor_info(&demo_NewVisitor)) printf("Error in Function data__insert_visitor_info: %s\n",strerror(errno));
else printf("Create successfully!\n");
}
/* demo for data__del_visitor_info */
void demo__data__del_visitor_info()
{
printf("Demo 2:\nTo delete a visitor info, you need to provide the visitor's ID.\n\n");
printf("you can see detailed info in demo__data__del_visitor_info()\n\n");
printf("Please input the ID:\n");
/* get ID input */
char tmp_visitorId[11];
while(!scanf("%s",tmp_visitorId)) fflush(stdin);
/* del the visitor info */
if(data__del_visitor_info(atoi(tmp_visitorId))) printf("Error in Function data__del_visitor_info: %s\n",strerror(errno));;
}
/* demo for data__get_visitor_info() */
void demo__data__get_visitor_info()
{
printf("Demo 3:\nGet Visitors info, index key word is 'china' in this case. \n");
printf("to search a visitor info, data__get_visitor_info() need a key word and a visitor pointer.\n");
printf("the key word must be more than three word and the visito info found will be store in the visitor point you provided\n");
printf("for more info please see demo__data__get_visitor_info() function!\n\n");
/* provide a key word to search visitors*/
char tmp_Nation[35]="china";
/* declear a visitor pointer to receive the matched visitors info */
struct visitor *pVstr=NULL;
pVstr= data__get_visitor_info(tmp_Nation,pVstr);
/* show error hint if the function not runing successfully */
if(errno) printf("Error in Function data__get_visitor_info: %s\n",strerror(errno));
/* deal with situation that nothing found */
if(!g_nRtrnRows) printf("No visitor found!!\n");
/* print all these visitors info on screen */
for(int i=0;i<g_nRtrnRows;i++)
printf("ID:%d Name:%s Tel:%s VIP:%d NationalID:%s Nation:%s province:%s City:%s\n", (pVstr+i)->id, (pVstr+i)->name, (pVstr+i)->tel,(pVstr+i)->vip, (pVstr+i)->nationalId,(pVstr+i)->nation, (pVstr+i)->province, (pVstr+i)->city);
}
/* demo function for data__insert_room_info() */
void demo__data__insert_room_info()
{
printf("Demo 4:\nThis demo will create a room file of room 666 in 20181111.\n");
printf("data__insert_room_info() need the address of a room struct before insert one info.\n");
printf("for more info please see demo__data__insert_room_info()\n\n");
/* Create a new visitor struct variable with some user info */
room demo_NewRoom={0/*this is the visitor id, please leave 0 here */,666/*roomId*/,20181111/*date*/,{2/*visitor number*/,1234567899,1243567899}/*visitorId*/,2/*room type*/,66.66/*price*/,2/*checkIn*/,1/*checkOut*/};
/* excute the data__insert_visitor_info function and when the function crash, print the error info on screen */
if(data__insert_room_info(&demo_NewRoom)) printf("Error in Function data__insert_room_info: %s\n",strerror(errno));
else printf("Create successfully!\n");
}
/* demo for data__del_room_info() */
void demo__data__del_room_info()
{
printf("Demo 5:\nTo delete a room info, you need to provide the index and the roomId.\n\n");
printf("See more in function demo__data__del_room_info()\n\n" );
printf("Please input the Index:\n");
/* get index input */
char tmp_roomIndex[11];
while(!scanf("%s",tmp_roomIndex)) fflush(stdin);
printf("Please input the RoomId:\n");
/* get room input */
char tmp_roomId[11];
while(!scanf("%s",tmp_roomId)) fflush(stdin);
/* del the visitor info */
if(data__del_room_info(atoi(tmp_roomIndex),atoi(tmp_roomId))) printf("Error in Function data__del_room_info: %s\n",strerror(errno));
}
void demo__data__get_room_info()
{
printf("Demo 6:\nGet room info, you need to set one or more condition, and the function will return all the room info which satisfy your condition.\n");
printf("to learn more please see demo__data__get_room_info()\n\n");
printf("in this case, we had set some condition for rooms searching.\n");
printf("You can find more detail in function demo__data__get_room_info()\n\n");
/* declear a room pointer to receive the matched rooms info */
struct room *pRm=NULL;
int hh[]={2/* number of visitors*/,1234567899/* visitorId*/,1243567899/* visitorId*/};
pRm= data__get_room_info(0/*index*/,666/*roomId*/,0/*date*/,hh/*visitorId*/,2/*type*/,0/*price*/,0/*checkIn*/,1/*checkOut*/,pRm);
/* show error hint if the function not runing successfully */
if(!pRm) printf("Error in Function data__get_room_info: %s\n",strerror(errno));
/* deal with situation that nothing found */
if(!g_nRtrnRows) printf("No room found!!\n");
/* print all these rooms info on screen */
for(int i=0;i<g_nRtrnRows;i++)
printf("Index:%d Room:%d date:%d VisitorNum:%d Type:%d Price:%f CheckIn:%d CheckOut:%d\n", (pRm+i)->index, (pRm+i)->roomId, (pRm+i)->date,(pRm+i)->visitorId[0], (pRm+i)->type,(pRm+i)->price, (pRm+i)->checkIn, (pRm+i)->checkOut);
}
/* function for create a visitor*/
void demo__create_visitor()
{
visitor demo_NewVisitor;
printf("Please input a name:\n");
while(!scanf("%s",demo_NewVisitor.name)) fflush(stdin);
printf("Please input a tel:\n");
while(!scanf("%s",demo_NewVisitor.tel)) fflush(stdin);
printf("Please input if it is vip (not vip->1,vip->2) :\n");
char tmp_ch[15];
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewVisitor.vip=atoi(tmp_ch);
printf("Please input a nationalId:\n");
while(!scanf("%s",demo_NewVisitor.nationalId)) fflush(stdin);
printf("Please input a nation:\n");
while(!scanf("%s",demo_NewVisitor.nation)) fflush(stdin);
printf("Please input a province:\n");
while(!scanf("%s",demo_NewVisitor.province)) fflush(stdin);
printf("Please input a city:\n");
while(!scanf("%s",demo_NewVisitor.city)) fflush(stdin);
demo_NewVisitor.id=0;
/* excute the data__insert_visitor_info function and when the function crash, print the error info on screen */
if(data__insert_visitor_info(&demo_NewVisitor)) printf("Error in Function data__insert_visitor_info: %s\n",strerror(errno));
else printf("Create successfully!\n");
}
void demo__create_room()
{
room demo_NewRoom={0/*this is the visitor id, please leave 0 here */,666/*roomId*/,20181111/*date*/,{2/*visitor number*/,1234567899,1243567899}/*visitorId*/,2/*room type*/,66.66/*price*/,2/*checkIn*/,1/*checkOut*/};
char tmp_ch[25];
printf("Please input a roomId (e.g. 205):\n");
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewRoom.roomId=atoi(tmp_ch);
printf("Please input a date (e.g. 20181111):\n");
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewRoom.date=atoi(tmp_ch);
printf("Please input the number of visitors:\n");
int tmp_vNum=0;
while(!scanf("%s",tmp_ch)) fflush(stdin);
tmp_vNum=atoi(tmp_ch);
if(tmp_vNum)
{
for(int i=0;i<tmp_vNum;i++)
{
printf("Please input visitors Id\n");
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewRoom.visitorId[i+1]=atoi(tmp_ch);
}
}
demo_NewRoom.visitorId[0]=tmp_vNum;
printf("Please input a room type (e.g. 1,2,3,4,5):\n");
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewRoom.type=atoi(tmp_ch);
printf("Please input a price (e.g. 205.5):\n");
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewRoom.price=atof(tmp_ch);
printf("Please input if it is checkIn (not In->1, In->2):\n");
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewRoom.checkIn=atoi(tmp_ch);
printf("Please input if it is checkOut (not Out->1, Out->2):\n");
while(!scanf("%s",tmp_ch)) fflush(stdin);
demo_NewRoom.checkOut=atoi(tmp_ch);
/* excute the data__insert_visitor_info function and when the function crash, print the error info on screen */
if(data__insert_room_info(&demo_NewRoom)) printf("Error in Function data__insert_room_info: %s\n",strerror(errno));
else printf("Create successfully!\n");
}
void demo__display_all_visitors()
{
char tmp_chTmp[35];
tmp_chTmp[0]='\0';
/* declear a visitor pointer to receive the matched visitors info */
struct visitor *pVstr=NULL;
pVstr= data__get_visitor_info(tmp_chTmp,pVstr);
/* show error hint if the function not runing successfully */
if(!pVstr) printf("Error in Function data__get_visitor_info: %s\n",strerror(errno));
/* print all these visitors info on screen */
for(int i=0;i<g_nRtrnRows;i++)
printf("ID:%d Name:%s Tel:%s VIP:%d NationalID:%s Nation:%s province:%s City:%s\n", (pVstr+i)->id, (pVstr+i)->name, (pVstr+i)->tel,(pVstr+i)->vip, (pVstr+i)->nationalId,(pVstr+i)->nation, (pVstr+i)->province, (pVstr+i)->city);
}
void demo__display_all_rooms()
{
/* declear a room pointer to receive the matched rooms info */
struct room *pRm=NULL;
pRm= data__get_room_info(0/*index*/,0/*roomId*/,0/*date*/,NULL/*visitorId*/,0/*type*/,0/*price*/,0/*checkIn*/,0/*checkOut*/,pRm);
/* show error hint if the function not runing successfully */
if(!pRm) printf("Error in Function data__get_room_info: %s\n",strerror(errno));
/* print all these rooms info on screen */
for(int i=0;i<g_nRtrnRows;i++)
printf("Index:%d Room:%d date:%d VisitorNum:%d Type:%d Price:%f CheckIn:%d CheckOut:%d\n", (pRm+i)->index, (pRm+i)->roomId, (pRm+i)->date,(pRm+i)->visitorId[0], (pRm+i)->type,(pRm+i)->price, (pRm+i)->checkIn, (pRm+i)->checkOut);
}
/***************above are the demo function********************/
/**********!!!!!!!!Fundamental Functions Here::Please do not change these unless you are forced to do!!!!!!!!!***********/
/* function for detect the keyborad to wait for a keyboard event and return it with ASCII */
int input__detect_input_ASCII()
{
int nKey;
/* clear former cache */
fflush(stdin);
/* get key value */
nKey = _getch();
return nKey;
}
/* function for get keyboard arrow event */
int input__get_arrow()
{
int nVal=0;
while(1)
{
nVal=input__detect_input_ASCII();
if(nVal==224)
{
/* get arraw value */
int nKey=input__detect_input_ASCII();
if(nKey==75)
return -1;
if(nKey==77)
return 1;
if(nKey==72)
return -1;
if(nKey==80)
return 1;
else
return 0;
}
if(nVal==13)
return 6;
if(nVal==27)
return 9;
}
}
/* function for adjust window color, size and position */
void print__setup()
{
/* set window title */
system(PROGRAM_TITLE);
/* set window size */
system(WINDOW_SIZE);
/* set window color */
system(WINDOW_COLOR);
}
/* function for print many space */
void print__space(int nSpace)
{
int i;
for(i=0;i<nSpace;i++)
printf(" ");
}
/* display a header */
void print__header()
{
time_t timep;
struct tm *curtm;
time (&timep);
curtm=gmtime(&timep);
printf("%d-%d-%d %d:%d:%02d",curtm->tm_year+1900, curtm->tm_mon+1,curtm->tm_mday, curtm->tm_hour,curtm->tm_min, curtm->tm_sec);
print__space(19);
if(g_pUsr)
printf("User: %6s",g_pUsr );
printf("this is the header");
printf("\n----------------------------------------------------------------------------------------");
}
/* function for print a standard item */
void print__item(char chItem[20],int nMrk,int nSpc)
{
printf("\n\n");
print__space(nSpc+(88-strlen(chItem))/2);
printf("%11s",chItem );
if(nMrk==1)
{
print__space(3);
printf("<<--");
}
}
/* function for get current date */
int data__get_current_date()
{
time_t timep;
struct tm *p;
time (&timep);
p=gmtime(&timep);
int date=(1900+p->tm_year)*10000+(1+p->tm_mon)*100+(p->tm_mday)*1;
return date;
}
/* function for generate a new visitor ID */
int data__generate_index_ID()
{
/*get current timestamp*/
time_t t;
t = time(NULL);
/*utlize timestamp as visitor ID*/
int visitor_ID = time(&t);
return visitor_ID;
}
/*function for check if a path exist, if not exist then create one */
void data__check_file_path(char hint)
{
char chCmd[65];
/* create command :: file name */
if(hint=='v'||hint=='r'||hint=='d'||hint=='i'||hint=='V'||hint=='I'||hint=='D'||hint=='R'||hint=='g')
sprintf(chCmd,"IF NOT EXIST \"%s\" MD \"%s\"",DATA_FOLDER,DATA_FOLDER);
/* if data floder not exist, then make one */
system(chCmd);
/* if data file not exist, then make one */
if(hint=='v'||hint=='d')
sprintf(chCmd,"@echo off&IF NOT EXIST \"%s\\%s\" echo VisitorData:>%s\\%s",DATA_FOLDER,VISITOR_DATA_FILE,DATA_FOLDER,VISITOR_DATA_FILE);
if(hint=='V'||hint=='D')
sprintf(chCmd,"@echo off&IF NOT EXIST \"%s\\%s\" echo RoomData:>%s\\%s",DATA_FOLDER,ROOM_DATA_FILE,DATA_FOLDER,ROOM_DATA_FILE);
system(chCmd);
}
/*function for encode data */
char *data__encode(char *str)
{
for(int i=0;i<strlen(str);i++)
{
str[i]^=PASSWORD;
}
return str;
}
/*function of generating digital signature for data file*/
char *data__generate_digital_signature(char *tmp_signature)
{
char signature[20];
int fLen=0;
char chPath[150];
data__check_file_path('g');
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,VISITOR_DATA_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
fseek(fp,0,SEEK_END);
fLen=ftell(fp);
fseek(fp,0,SEEK_SET);
signature[0]=DIGITAL_SIGNATURE_KEY;
for(int i=0;i<fLen;i++) {signature[0]^=fgetc(fp);signature[0]+=ftell(fp);}
fclose(fp);
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,ROOM_DATA_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
fseek(fp,0,SEEK_END);
fLen=ftell(fp);
fseek(fp,0,SEEK_SET);
signature[1]=DIGITAL_SIGNATURE_KEY;
for(int i=0;i<fLen;i++) {signature[1]^=fgetc(fp);signature[1]+=ftell(fp);}
fclose(fp);
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,VISITOR_DEL_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
fseek(fp,0,SEEK_END);
fLen=ftell(fp);
fseek(fp,0,SEEK_SET);
signature[2]=DIGITAL_SIGNATURE_KEY;
for(int i=0;i<fLen;i++) {signature[2]^=fgetc(fp);signature[2]+=ftell(fp);}
fclose(fp);
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,ROOM_DEL_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
fseek(fp,0,SEEK_END);
fLen=ftell(fp);
fseek(fp,0,SEEK_SET);
signature[3]=DIGITAL_SIGNATURE_KEY;
for(int i=0;i<fLen;i++) {signature[3]^=fgetc(fp);signature[3]+=ftell(fp);}
fclose(fp);
signature[12]='\0';
for(int i=0;i<4;i++)
{
if(signature[i]<0) signature[i]=-signature[i];
signature[i+8]=signature[i]%7+65;
signature[i+4]=signature[i]%10+48;
signature[i]=signature[i]%26+97;
}
//free(tmp_signature);
tmp_signature=(char *)malloc(13*sizeof(char));
tmp_signature[0]=signature[0];
tmp_signature[1]=signature[7];
tmp_signature[2]=signature[10];
tmp_signature[3]=signature[6];
tmp_signature[4]=signature[3];
tmp_signature[5]=signature[9];
tmp_signature[6]=signature[2];
tmp_signature[7]=signature[4];
tmp_signature[8]=signature[8];
tmp_signature[9]=signature[5];
tmp_signature[10]=signature[11];
tmp_signature[11]=signature[6];
tmp_signature[12]='\0';
fclose(fp);
return tmp_signature;
}
/*function for update file signature */
void data__update_file_signature()
{
FILE *fp;
char chPath[50];
char *signature=NULL;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,SIGNATURE_FILE);
/* point the data file by at */
fp = fopen (chPath, "w+");
fprintf(fp, "%s",data__generate_digital_signature(signature) );
fclose(fp);
}
/* function for check file signature */
void data__check_file_signature()
{
char *current_signature=NULL;
current_signature=data__generate_digital_signature(current_signature);
FILE *fp;
char chPath[50];
/* declear the empty situation*/
char empty[]="d7C7dCd7C7C7";
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,SIGNATURE_FILE);
/* point the data file read only */
fp = fopen (chPath, "r");
fseek(fp,0,SEEK_SET);
for(int i=0;i<12;i++)
{
if(fgetc(fp)!=current_signature[i]&&strcmp(current_signature,empty)!=0)
{
MessageBox( 0, "Cannot recognize Data file!", "Warnning!", 0 );
exit(-1);
}
}
fclose(fp);
}
/* function for insert a visitor data */
int data__insert_visitor_info(struct visitor *pVstr)
{
/* reset errno */
errno=0;
data__check_file_signature();
char chPath[150];
data__check_file_path('v');
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,VISITOR_DATA_FILE);
/* point the data file by at */
fp = fopen (chPath, "at+");
/* insert new visitor */
sprintf( chPath,"$$$%d$|%s$|%s$|%d$|%s$|%s$|%s$|%s$|as4|||",pVstr->id=data__generate_index_ID(),pVstr->name,pVstr->tel,pVstr->vip,pVstr->nationalId,pVstr->nation,pVstr->province,pVstr->city);
/* encode the string */
char *chCode=data__encode(chPath);
fprintf(fp, "%s", chCode);
/* close file */
fclose(fp);
data__update_file_signature();
/* exclude invalid argument error */
if(errno==22) errno=0;
/* return error num */
return errno;
}
/* function for insert a room data */
int data__insert_room_info(struct room *pRm)
{
/* reset errno */
errno=0;
data__check_file_signature();
char chPath[150];
data__check_file_path('V');
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,ROOM_DATA_FILE);
/* point the data file by at */
fp = fopen (chPath, "at+");
/* transform visitorId to string */
char tmp_visitorId[12*(VISITOR_MAX_NUMBER+1)];
tmp_visitorId[0]='\0';
char tmp_str[12];
for(int i=1;i<=pRm->visitorId[0];i++)
{
sprintf(tmp_str,"%d",pRm->visitorId[i]);
strcat(tmp_visitorId,tmp_str);
}
/* if no visitorId, put 0 in string*/
if(pRm->visitorId[0]==0) sprintf(tmp_visitorId,"%d",0);
/* insert new visitor */
sprintf( chPath,"$$$%dI$|%dR$|%dD$|%sV$|%dT$|%fP$|%dC$|%dc$|hhhH$|as4|||",pRm->index=data__generate_index_ID(),pRm->roomId,pRm->date,tmp_visitorId,pRm->type,pRm->price,pRm->checkIn,pRm->checkOut);
/* encode the string */
char *chCode=data__encode(chPath);
fprintf(fp, "%s", chCode);
/* close file */
fclose(fp);
data__update_file_signature();
/* exclude invalid argument error */
if(errno==22) errno=0;
/* return error num */
return errno;
}
/* function for locate a peice of info in a file by key words */
int *data__seek_key_word(char chKey[40], FILE *fp,int * nSeek)
{
int i,j=0;
/* if the length of key words is less than 3, the function will not work */
if(strlen(chKey)<2) return NULL;
/* get the length of the file */
fseek(fp,0,SEEK_END);
int nFlen=ftell(fp);
/* free nSeek firstly in case it has been decleared */
free(nSeek);
/* allocate a memary for nSeek */
nSeek=(int *)malloc((nFlen/strlen(chKey))*sizeof(int));
/* move the pointer to the beginning of the File */
fseek( fp, 0, SEEK_SET );
/* find all location where the key word exist */
for(i=0;ftell(fp)<nFlen;)
{
/* match the key word */
for(j=0;j<strlen(chKey);)
{
if(fgetc(fp)==(chKey[j++]^PASSWORD)) ;
else break;
}
/* if found the key word, record its location */
if(j==strlen(chKey))
{
nSeek[++i]=ftell(fp);
/*active this only for debug purpose*//*printf("%d\n",nSeek[i] );*/
}
}
/* record the times that the key words appeared in the File */
nSeek[0]=i;
return nSeek;
}
/* function for get one visitor info */
void data__get_one_visitor_info(int nSeek,FILE *fp,visitor *visitor,int index)
{
int i,nItem,nLineCnt,nLineCnt_sub=0;
char chTmp[35];
/* get the length of the File */
fseek(fp,0,SEEK_END);
int nFlen=ftell(fp);
/* set the pointer at the nSeek point of the File */
fseek(fp,nSeek,SEEK_SET);
/* find the beginning of this visitor info */
do
{
fseek(fp,-4,SEEK_CUR);
}while(!((fgetc(fp)^PASSWORD)=='$'&&(fgetc(fp)^PASSWORD)=='$'&&(fgetc(fp)^PASSWORD)=='$'));
/* adjust the pionter for the following reading*/
fseek(fp,2,SEEK_CUR);
/* read visitor info */
nItem=0;
do
{
/* only active this for debug purpose */
/*printf("%c", (fgetc(fp)^PASSWORD));*/
chTmp[0]='\0';
i=0;
/* read visitor info item one by one */
do
{
fseek(fp,-2,SEEK_CUR); /* readjust the pointer*/
chTmp[i++]=(fgetc(fp)^PASSWORD);
/* mark when find a '$|' which indicate the end of one item */
nLineCnt_sub=0;
if((fgetc(fp)^PASSWORD)=='$') nLineCnt_sub++;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt_sub++;
fseek(fp,-2,SEEK_CUR); /* readjust the pointer */
/* mark when find a '|||' which indicate the end this user info */
nLineCnt=0;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt++;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt++;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt++;
fseek(fp,-1,SEEK_CUR);
}while(nLineCnt_sub<2&&ftell(fp)<nFlen&&nLineCnt<3);
/* give chTmp a end mark */
chTmp[i]='\0';
if(nLineCnt_sub==2)
{
/* load these visitor info to struct pointer */
if(nItem==0) (visitor+index)->id=atoi(chTmp);
if(nItem==1) strcpy((visitor+index)->name,chTmp);
if(nItem==2) strcpy((visitor+index)->tel,chTmp);
if(nItem==3) (visitor+index)->vip=atoi(chTmp);
if(nItem==4) strcpy((visitor+index)->nationalId,chTmp);
if(nItem==5) strcpy((visitor+index)->nation,chTmp);
if(nItem==6) strcpy((visitor+index)->province,chTmp);
if(nItem==7) strcpy((visitor+index)->city,chTmp);
/* only active this for debug purpose */
/*printf("%s\n",chTmp);*/
}
/* when come accross '|||' break */
if(nLineCnt==3||ftell(fp)>nFlen) break;
fseek(fp,2,SEEK_CUR);
nItem++;
}while(1);
}
/* function for get one room info */
void data__get_one_room_info(int nSeek,FILE *fp,room *pRoom,int index)
{
int i,nItem,nLineCnt,nLineCnt_sub=0;
char chTmp[35];
/* get the length of the File */
fseek(fp,0,SEEK_END);
int nFlen=ftell(fp);
/* set the pointer at the nSeek point of the File */
fseek(fp,nSeek,SEEK_SET);
/* find the beginning of this visitor info */
do
{
fseek(fp,-4,SEEK_CUR);
}while(!((fgetc(fp)^PASSWORD)=='$'&&(fgetc(fp)^PASSWORD)=='$'&&(fgetc(fp)^PASSWORD)=='$'));
/* adjust the pionter for the following reading*/
fseek(fp,2,SEEK_CUR);
/* read visitor info */
nItem=0;
do
{
/* only active this for debug purpose */
/*printf("%c", (fgetc(fp)^PASSWORD));*/
chTmp[0]='\0';
i=0;
/* read visitor info item one by one */
do
{
fseek(fp,-2,SEEK_CUR); /* readjust the pointer*/
chTmp[i++]=(fgetc(fp)^PASSWORD);
/* mark when find a '$|' which indicate the end of one item */
nLineCnt_sub=0;
if((fgetc(fp)^PASSWORD)=='$') nLineCnt_sub++;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt_sub++;
fseek(fp,-2,SEEK_CUR); /* readjust the pointer */
/* mark when find a '|||' which indicate the end this user info */
nLineCnt=0;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt++;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt++;
if((fgetc(fp)^PASSWORD)=='|') nLineCnt++;
fseek(fp,-1,SEEK_CUR);
}while(nLineCnt_sub<2&&ftell(fp)<nFlen&&nLineCnt<3);
/* give chTmp a end mark */
chTmp[i-1]='\0';
if(nLineCnt_sub==2)
{
/* load these visitor info to struct pointer */
if(nItem==0) (pRoom+index)->index=atoi(chTmp);
if(nItem==1) (pRoom+index)->roomId=atoi(chTmp);
if(nItem==2) (pRoom+index)->date=atoi(chTmp);
if(nItem==3)
{
char tmp_chTmp[13];
int j=0;
int k=0;
for(k=0;k<(strlen(chTmp)/10);k++)
{
for(j=0;j<10;j++)
{
tmp_chTmp[j]=chTmp[j+k*10];
}
tmp_chTmp[j]='\0';
(pRoom+index)->visitorId[k+1]=atoi(tmp_chTmp);
}
(pRoom+index)->visitorId[0]=k;
}
if(nItem==4) (pRoom+index)->type=atoi(chTmp);
if(nItem==5) (pRoom+index)->price=atof(chTmp);
if(nItem==6) (pRoom+index)->checkIn=atoi(chTmp);
if(nItem==7) (pRoom+index)->checkOut=atoi(chTmp);
/* only active this for debug purpose */
/*printf("%s\n",chTmp);*/
}
/* when come accross '|||' break */
if(nLineCnt==3||ftell(fp)>nFlen) break;
fseek(fp,2,SEEK_CUR);
nItem++;
}while(1);
}
/* function for collect info about deleted visitor id */
int *data__get_del_usr_info(int *deled_usr)
{
/* reset errno */
errno=0;
char chPath[60];
data__check_file_path('r');
/* this function should not have worked well with out this code, however...*/
/*if(deled_usr!=NULL) free(deled_usr);*/
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,VISITOR_DEL_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
/* get the length of the file */
fseek(fp,0,SEEK_END);
int nFlen=ftell(fp);
/* allocate a memory for int[] deled_usr*/
deled_usr=(int *)malloc((nFlen/10+1)*sizeof(int));
/* move pointer to the beginning of the File */
fseek(fp,0,SEEK_SET);
char strTmp[12];
int j=0;
int i=0;
/* give the number of deleted visitors to int[] */
*deled_usr=nFlen/10+1;
/* find each deleted visitor ID */
for(j++;j<nFlen/10+1;j++)
{
/* get one ID */
for(i=0;i<10;i++)
{
strTmp[i]=(fgetc(fp)^PASSWORD);
}
strTmp[i]='\0';
/* assign the ID to int[]*/
*(deled_usr+j)=atoi(strTmp);
}
/*close the File */
fclose(fp);
/* return the int[]*/
return deled_usr;
}
/* function for collect info about deleted visitor id */
double *data__get_del_room_info(double *deled_rom)
{
/* reset errno */
errno=0;
char chPath[60];
data__check_file_path('R');
/* this function should not have worked well with out this code, however...*/
/*if(deled_rom!=NULL) free(deled_usr);*/
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,ROOM_DEL_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
/* get the length of the file */
fseek(fp,0,SEEK_END);
int nFlen=ftell(fp);
/* allocate a memory for int[] deled_usr*/
deled_rom=(double *)malloc((nFlen/13+1)*sizeof(double));
/* move pointer to the beginning of the File */
fseek(fp,0,SEEK_SET);
char strTmp[12];
int j=0;
int i=0;
/* give the number of deleted visitors to int[] */
*deled_rom=nFlen/14+1;
/* find each deleted visitor ID */
for(j++;j<nFlen/14+1;j++)
{
/* get one ID */
for(i=0;i<14;i++)
strTmp[i]=(fgetc(fp)^PASSWORD);
strTmp[i]='\0';
/* assign the ID to int[]*/
*(deled_rom+j)=(double)atof(strTmp);
}
/*close the File */
fclose(fp);
/* return the int[]*/
return deled_rom;
}
/* function for get visitors info */
struct visitor *data__get_visitor_info(char value[35],visitor *pVstr)
{
/* reset errno */
errno=0;
data__check_file_signature();
char chPath[60];
data__check_file_path('d');
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,VISITOR_DATA_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
int *a=NULL;
if(value[0]=='\0') sprintf(value,"1543");
/* find visitor info position in File by key words */
a=data__seek_key_word(value, fp,a);
/* if no visitor found */
if(!a||!a[0]){errno=0;g_nRtrnRows=0;data__update_file_signature(); return NULL;}
/* free the memmory of former pVstr */
free(pVstr);
/* set a visitor struct array */
struct visitor visitors[a[0]+4];
/* point pVstr at visitors */
pVstr=visitors;
/* allocate memory for pVstr */
pVstr=(visitor*)malloc(a[0]*sizeof(visitor));
/* find all visitor ID which is abandon */
int *del=NULL;
del=data__get_del_usr_info(del);
int ifDel=0;
int ii=0;
/* convert exist visitor info to struct one by one*/
for(int i=0;i<a[0];i++,ii++)
{
ifDel=0;
data__get_one_visitor_info(a[i+1],fp,pVstr,ii);
/* exclude deleted visitor ID */
for(int j=0;j<*del;j++)
{
if((pVstr+ii)->id==*(del+j+1)) ifDel=1;
}
if(ifDel==1) ii--;
}
/* close file */
fclose(fp);
data__update_file_signature();
/* inform return rows of the pVstr*/
g_nRtrnRows=ii;
if(errno==22) errno=0;
return pVstr;
}
/* function for get room info */
struct room *data__get_room_info(int index, int roomId, int date, int visitorId[], int type, double price, int checkIn, int checkOut,room *pRm)
{
/* reset errno */
errno=0;
data__check_file_signature();
char chPath[60];
char value[35];
while(1)
{
if(index!=0)
{
sprintf(value,"%dI$",index);
break;
}
if(roomId!=0)
{
sprintf(value,"%dR$",roomId);
break;
}
if(date!=0)
{
sprintf(value,"%dD$",date);
break;
}
if(visitorId!=NULL)
{
char tmp_ch[13];
value[0]='\0';
for(int i=0;i<visitorId[0];i++)
{
itoa(visitorId[i+1],tmp_ch,10);
strcat(value,tmp_ch);
}
sprintf(tmp_ch,"V$");
strcat(value,tmp_ch);
break;
}
if(type!=0)
{
sprintf(value,"%dT$",type);
break;
}
if(price!=0)
{
sprintf(value,"%lfP$",price);
break;
}
if(checkIn!=0)
{
sprintf(value,"%dC$",checkIn);
break;
}
if(checkOut!=0)
{
sprintf(value,"%dc$",checkOut);
break;
}
sprintf(value,"hhhH$");
break;
}
data__check_file_path('D');
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,ROOM_DATA_FILE);
/* point the data file by at */
fp = fopen (chPath, "r");
int *a=NULL;
/* find room info position in File by key words */
a=data__seek_key_word(value, fp,a);
/* if no room found */
if(!a){errno=0; g_nRtrnRows=0;data__update_file_signature(); return NULL;}
/* free the memmory of former pVstr */
free(pRm);
/* set a visitor struct array */
struct room rooms[a[0]+4];
/* point pVstr at visitors */
pRm=rooms;
/* allocate memory for pVstr */
pRm=(room*)malloc(a[0]*sizeof(room));
/* find all visitor ID which is abandon */
double *del=NULL;
del=data__get_del_room_info(del);
int ifDel=0;
int ii=0;
/* convert exist visitor info to struct one by one*/
for(int i=0;i<a[0];i++,ii++)
{
ifDel=0;
data__get_one_room_info(a[i+1],fp,pRm,ii);
/* exclude deleted visitor ID */
for(int j=0;j<*del;j++)
{
/* only active this for debug purpose*//*printf("%d\n", (int)((*(del+j+1)-(double)(int)*(del+j+1))*1000));*/
if(((pRm+ii)->index==(int)*(del+j+1))&&((pRm+ii)->roomId==((int)((*(del+j+1)-(double)(int)*(del+j+1))*1000)+1))) ifDel=1;
}
if(index!=0&&(pRm+ii)->index!=index) ifDel=1;
if(roomId!=0&&(pRm+ii)->roomId!=roomId) ifDel=1;
if(date!=0&&(pRm+ii)->date!=date) ifDel=1;
if(visitorId!=NULL)
{
ifDel=visitorId[0];
for(int k=0;k<visitorId[0];k++)
{
for(int l=0;l<(pRm+ii)->visitorId[0];l++)
{
if(visitorId[k+1]==(pRm+ii)->visitorId[l+1]) ifDel--;
}
}
}
if(type!=0&&(pRm+ii)->type!=type) ifDel=1;
if(price!=0&&(pRm+ii)->price!=price) ifDel=1;
if(checkIn!=0&&(pRm+ii)->checkIn!=checkIn) ifDel=1;
if(checkOut!=0&&(pRm+ii)->checkOut!=checkOut) ifDel=1;
if(ifDel!=0) ii--;
}
/* close file */
fclose(fp);
data__update_file_signature();
/* inform return rows of the pVstr*/
g_nRtrnRows=ii;
if(errno==22) errno=0;
return pRm;
}
/* function for delete a visitor info */
int data__del_visitor_info(int id)
{
/* reset errno */
errno=0;
data__check_file_signature();
/*check if the ID legal */
if(id>1543399229&&id<10000000000)
{
char chPath[30];
data__check_file_path('i');
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,VISITOR_DEL_FILE);
/* point the data file by at */
fp = fopen (chPath, "at+");
/* allocate tmp str with memory */
char *tmp_str=NULL;
tmp_str=(char*)malloc(13*sizeof(char));
/* insert new visitor to del list */
sprintf( tmp_str,"%d",id);
/* encode data */
tmp_str=data__encode(tmp_str);
/* output data to file */
fprintf(fp, "%s",tmp_str );
/* close file */
fclose(fp);
data__update_file_signature();
return 0;
}
/* remark error */
errno=2;
if(errno==22) errno=0;
return 2;
}
/* function for delete a room info */
int data__del_room_info(int id,int room)
{
/* reset errno */
errno=0;
data__check_file_signature();
/*check if the ID legal */
if(id>1543399229&&id<10000000000)
{
char chPath[30];
data__check_file_path('I');
/* declear a file var */
FILE *fp;
/* get file name */
sprintf(chPath,"%s/%s",DATA_FOLDER,ROOM_DEL_FILE);
/* point the data file by at */
fp = fopen (chPath, "at+");
/* allocate tmp str with memory */
char *tmp_str=NULL;
tmp_str=(char*)malloc(20*sizeof(char));
/* insert new room to del list */
sprintf( tmp_str,"%d.%d",id,room);
/* encode data */
tmp_str=data__encode(tmp_str);
/* output data to file */
fprintf(fp, "%s",tmp_str );
/* close file */
fclose(fp);
data__update_file_signature();
return 0;
}
/* remark error */
errno=2;
if(errno==22) errno=0;
return 2;
}
/***********!!!!!!!!!!above are fundamental functions!!!!!!!!!************/