读取通达信的股票日线数据

读取通达信的day日线文件，暂时只存了日期，开盘，收盘，最高，最低数值。

该文件由于不是全数据的，最开始的几个数据不知是什么，中间也含有大量的0的部分。需要处理跳过这些无用的区域。

实现的是从2012年开始，将所有数据存入一个单链表中。

/*
 * =====================================================================================
 *
 *       Filename:  Read.c
 *
 *    Description:  read date
 *
 *        Version:  1.0
 *        Created:  07/13/2012 11:27:21 PM
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  [e-mail]
 *   Organization:
 *
 * =====================================================================================
 */

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


typedef struct tagDayData{
    int date;
    float start;
    float end;
    float highest;
    float lowest;
    float volume;
    struct tagDayData* next;
} *DayData, _DayData;


void ReadTail(const char *path){
    //set today to the max time
    time_t rawtime;
    struct tm *    hrtime;
    time(&rawtime);
    hrtime = localtime( &rawtime);

    long maxtime;
    maxtime = (hrtime->tm_year 1900)*(long)10000   (hrtime->tm_mon 1)*100   hrtime->tm_mday;

    //read data
    FILE* fid;
    unsigned int p;
    p = 0;
    fid=fopen(path,"r");
    //only the data in 2012 is valid;

    while(!feof(fid) &&( p>maxtime || p<20120000)){
        fread(&p, sizeof(unsigned int), 1, fid);
    }

    printf("%d \n",p);

    DayData head = (DayData) malloc(sizeof(_DayData));
    DayData ptr = head;

    printf("max = %ld \n", maxtime);
    while(p<maxtime && p >20120000){
        DayData cur = (DayData) malloc(sizeof(_DayData));
        ptr->next = cur;
        cur->date = p;
        printf("0: ptrdate = %d date = %d \n", ptr->date,cur->date);
        fread(&p, sizeof(unsigned int), 1, fid);
        cur->start = p/(float)100;

        fread(&p, sizeof(unsigned int), 1, fid);
        cur->highest = p/(float)100;

        printf("1:highest  = %f \n", cur->highest);
        fread(&p, sizeof(unsigned int), 1, fid);
        cur->lowest = p/(float)100;

        fread(&p, sizeof(unsigned int), 1, fid);
        cur->end = p/(float)100;

        ptr = cur;
        fseek(fid, 3*sizeof(unsigned int), 1);

        //read the date of next day
        fread(&p, sizeof(unsigned int), 1, fid);
        printf("max = %ld..... p = %d \n", maxtime,p);
    }
    fclose(fid);

}



/*
 * ===  FUNCTION  ======================================================================
 *         Name:  main
 *  Description:
 * =====================================================================================
 */
    int
main ( int argc, char *argv[] )
{

    ReadTail("sh600242.day",0);
    return EXIT_SUCCESS;
}                /* ----------  end of function main  ---------- */