recheck.c

这是一个使用了 cursor 编程技术实现的车站自动售票系统的源代码

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<fcntl.h>
#include<signal.h>
#include<curses.h>
#include<malloc.h>
#include<time.h>
#include<errno.h>
#include<unistd.h>
#include<pwd.h>

#define	MAXSEAT	60
#define	MSGROW	23

#define	BEGINYEAR	1970
#define	DSEC	86400
#define	HSEC	3600
#define	MSEC	60

struct	time{
	int	second;		/* 0--59	*/
	int	minute;		/* 0--59	*/
	int	hour;		/* 0--23	*/
	int	mday;		/* 1--31	*/
	int	month;		/* 1--12	*/
	int	year;		/* 1970--	*/
	int	wday;		/* 0--6(0=Sunday)*/
	int	yday;		/* 1--365(366)	*/
	long	tseconds;	/* seconds from 1970.1.1,0:0:0	*/
};

struct	busstate{
	int	bus;
	int	time;
	char	regi;
	int	regiuser;
	int	regitime;
	char	check;
	int	gate;
	int	checkuser;
	int	checkbegintime;
	int	checkendtime;
	char	print;
	int	printuser;
	int	printtime;
	char	settle;
	int	owner;
	int	rate;
	int	setleuser;
	int	setletime;
}*bs;
int	nbs;

enum	Key{
	NONE,Up,Down,Right,Left,Center,End,PgDn,Home,
	PgUp,Ins,F1,F2,F3,F4,F5,F6,F7,F8,F9,F10,F11,F12
};

char	*RP;
int	uno;

main()
{
	long	tn;
	struct	time	t;
	int	busno=0;
	int	i;
	char	msg[80];

	RP=getenv("ROOTPATH");
	if(RP==NULL)
		return	-1;
	uno=getuid();
	nbs=readbs();
	if(nbs==-1)
		return	-1;

	signal(SIGINT,SIG_IGN);
	initscr();
	raw();
	nonl();
	noecho();

	while(1)
	{
		clear();
		mvaddstr(10,30,"*** 设置车次重检 ***");
		mvaddstr(MSGROW,30,"敲<ESC>键退出...");
		refresh();
		if(get_n(15,30,"请输入班次号: ",&busno,10)==-1)
			break;
		for(i=0;i<nbs&&busno!=bs[i].bus;i++)
			;
		if(i<nbs)
		{
			if(check(busno)!=0)
				continue;
			if(bs[i].print==1)
			{
				tn=time(0);
				gettime(tn,&t);
				bs[i].print=0;
				writebs(i,bs[i]);
				showmsg("设置重检成功!");
			}
			else
			{
				sprintf(msg,"班次%d并未打印结算单,可以继续检票!",busno);
				showmsg(msg);
			}
		}
		else
		{
			sprintf(msg,"班次%d不存在, 无法设置重检!",busno);
			showmsg(msg);
		}
	}
	if(bs!=NULL)
		free(bs);
	erase();
	clear();
	refresh();
	endwin();
}

int	readbs()
{
	int	fd;
	char	fn[80];
	long	size;
	char	msg[80];
	long	tn;
	struct	time	t;

	tn=time(0);
	gettime(tn,&t);

	sprintf(fn,"%s/data/state/%d",RP,t.year*10000+t.month*100+t.mday);
	fd=open(fn,O_RDONLY);
	if(fd==-1)
	{
		sprintf(msg,"文件 %s 打开失败!",fn);
		showmsg(msg);
		return	fd;
	}
	size=lseek(fd,0L,2);
	bs=(struct busstate *)malloc(size);
	if(bs==NULL)
	{
		showmsg("为班次数据分配内存出错!");
		close(fd);
		return	-1;
	}
	else
	{
		lseek(fd,0L,0);
		read(fd,(char *)bs,size);
		close(fd);
		return	size/sizeof(struct busstate);
	}
}

int	check(int bus)
{
	long	tn;
	struct	time	t;
	struct	ticketlib{
		int	bus;
		int	state;
		int	time;
		int	nseat;
		int	lseat;
		int	gate;
		int	model;
		int	laststa;
		char	tab[MAXSEAT];
	}tl;
	char	fn[80],msg[80];
	int	fd;
	long	size,ss;

	tn=time(0);
	gettime(tn,&t);

	sprintf(fn,"%s/data/ticlib/%d",RP,t.year*10000+t.month*100+t.mday);
	fd=open(fn,O_RDONLY);
	if(fd==-1)
	{
		showmsg("票库文件无法打开, 请排除故障后重试!");
		return	-1;
	}
	size=sizeof(tl);
	while(1)
	{
		ss=read(fd,(char *)&tl,size);
		if(ss!=size)
		{
			showmsg("票库中无此班次, 请核实后重试!");
			close(fd);
			return	-1;
		}
		if(tl.bus==bus)
		{
			close(fd);
			if(tl.state==0)
				return	0;
			else
			{
				sprintf(msg,"班次%d已经停开, 不能重检!",bus);
				showmsg(msg);
				return	-1;
			}
		}
	}
}

int	writebs(int seat,struct busstate bs)
{
	int	fd;
	char	fn[80];
	long	tn;
	struct	time	t;
	char	msg[80];

	tn=time(0);
	gettime(tn,&t);
	sprintf(fn,"%s/data/state/%d",RP,t.year*10000+t.month*100+t.mday);
	fd=open(fn,O_WRONLY);
	if(fd==-1)
	{
		sprintf(msg,"文件%s无法打开!",fn);
		showmsg(msg);
		return	-1;
	}
	lseek(fd,seat*sizeof(struct busstate),0);
	lockf(fd,F_LOCK,sizeof(struct busstate));
	write(fd,(char *)&bs,sizeof(struct busstate));
	close(fd);
	return	0;
}

int	gettime(long tn,struct time *t)
{
	int	days,ydays;
	short	TZ;
	char	*tzs;
	short	mdays[2][12]={31,28,31,30,31,30,31,31,30,31,30,31,
			      31,29,31,30,31,30,31,31,30,31,30,31};
	short	i;

	tzs=(char *)getenv("TZ");
	if(tzs==NULL)
		TZ=0;
	else
	{
		for(;*tzs!='\0'&&*tzs!='+'&&*tzs!='-'&&(*tzs<'0'||*tzs>'9');tzs++)
			;
		TZ=atoi(tzs);
		TZ=-TZ;
	}
	tn+=TZ*HSEC;

	days=tn/DSEC;

	t->tseconds=tn;

	t->wday=(days+4)%7;

	ydays=365;
	for(t->year=BEGINYEAR;days>=ydays;t->year++,days-=ydays)
		if(t->year%400==0||(t->year%4==0&&t->year%100!=0))
			ydays=366;
		else
			ydays=365;

	t->yday=days;

	t->month=1;
	if(t->year%400==0||(t->year%4==0&&t->year%100!=0))
		for(i=0;days>=mdays[1][i];i++)
		{
			days-=mdays[1][i];
			t->month++;
		}
	else
		for(i=0;days>=mdays[0][i];i++)
		{
			days-=mdays[0][i];
			t->month++;
		}

	t->mday=days+1;

	t->hour=tn%DSEC/HSEC;
	t->minute=tn%HSEC/MSEC;
	t->second=tn%MSEC;

	return	0;
}

int	get_n(int y,int x,char *prompt,int *n,int b)
{
	char	c,s[80],ss[80];
	int	i;

	sprintf(s,"%d",*n);
	for(i=0;i<b-1;i++)
		ss[i]=' ';
	ss[b-1]='\0';
	mvaddstr(y,x,prompt);
	x+=strlen(prompt);
	mvaddstr(y,x,ss);
	mvaddstr(y,x,s);
	refresh();

	i=0;
	while(1)
	{
		move(y,x+i);
		refresh();
		if(i>=b-1)
			c=0x0d;
		else
			c=getkey();
		switch(c)
		{
			case	-1:
				continue;
			case 	0x1b:		/* <ESC> pressed */
				return	-1;
			case	0x0d:		/* <ENTER> pressed */
				if(i)
				{
					ss[i]='\0';
					*n=atoi(ss);
				}
				return	0;
			case	0x08:		/* <BS> pressed */
				if(i<=0)
					continue;
				else
				{
					ss[--i]=' ';
					ss[i]='\0';
				}
				break;
			case	'0':
			case	'1':
			case	'2':
			case	'3':
			case	'4':
			case	'5':
			case	'6':
			case	'7':
			case	'8':
			case	'9':
				ss[i++]=c;
				break;
			default:
				printf("\7\7");
				break;
		}
		mvaddstr(y,x,ss);
		refresh();
	}
}

getkey()
{
	char	c,key;
	char	keys[]={Up,Down,Right,Left,NONE,NONE,PgDn,Home,
		PgUp,NONE,End,Ins};
	void	timeint();

	sigset(SIGALRM,timeint);
	key=getch();
	refresh();
	if(key==0x1b)
	{
		alarm(1);
		if(getch()!=-1)
		{
			c=getch();
			refresh();
			key=keys[c-'A'];
		}
	}
	sigignore(SIGALRM);
	return	key;
}

void	timeint()
{
}

showmsg(char s[])
{
	move(MSGROW,0);
	clrtoeol();
	mvaddstr(MSGROW,(80-strlen(s))/2,s);
	refresh();
	printf("\7\7");
	getch();
	refresh();
}