ticket.c.svn-base

可以作为Linux教学用的程序

/* ticket.c */

#define _XOPEN_SOURCE

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "ticket.h"

ticket_collection_t *ticket_collection_open(const char *path){
	FILE *fp = NULL;
	ticket_collection_t *col;
	ticket_t * tics;
	char buffer[512];
	int count = 0;
	
	if((fp = fopen(path, "r"))== NULL ){
		return NULL;
	}
	
	if(fgets(buffer, 512, fp) == NULL)return NULL;
	
	count = atoi(buffer);
	if(count<=0) return NULL;
	
	if((col = (ticket_collection_t *)malloc(sizeof(ticket_collection_t))) == NULL){
		fclose(fp);
		return NULL;
	}
	col->len = 0;
	if((tics = (ticket_t *)malloc(sizeof(ticket_t)*count)) == NULL){
		fclose(fp);
		return NULL;
	}
	col->tickets = tics;
	while(fgets(buffer,512, fp) != NULL){
		char *id;
		char *trainno;
		char *time;
		char *num;
		char *des;
		struct tm tim;
		id = buffer;
		if((trainno = strstr(id,"\t")) != NULL){
			printf(".");
			*trainno = '\0';
			trainno += 1;
		}else continue;
		if((time = strstr(trainno,"\t")) != NULL){
			*time = '\0';
			time += 1;
		}else continue;
		if((num = strstr(time,"\t")) != NULL){
			*num = '\0';
			num += 1;
		}else continue;
		if((des = strstr(num,"\t")) != NULL){
			*des = '\0';
			des += 1;
		}else continue;
		des[strlen(des)-1] = '\0';	
		col->tickets[col->len].id = atoi(id);
		strcpy(col->tickets[col->len].trainno,trainno);
		strptime(time,"%Y-%m-%d %H:%M:%S",&tim);
		col->tickets[col->len].time = mktime(&tim);
		col->tickets[col->len].num = atoi(num);
		strcpy(col->tickets[col->len].description,des);
		col->len ++;
		if(col->len >= count)break;	
	}
	
	return col;
}

int ticket_collection_close(ticket_collection_t * tc){
	free(tc->tickets);
	free(tc);
	return 0;
}