C 数据文件的添加，修改，删除

来源：互联网发布：华为手机端口怎么查编辑：程序博客网时间：2024/06/06 04:36
http://blog.csdn.net/mochouxiyan/article/details/2918298
    #include <stdio.h>    #include <stdlib.h>    #include <string.h>    #include <time.h>    #include<sys/types.h>    #include<sys/timeb.h>#define file_path "/usr/local/mytools/video_info/video_list_timeout.txt"    void main()    {        char *pp[] = {"Hongkong123",                        "Singgapore456",                        "Beijing",                        "London",                        "Washington"                        };         AddDataFile(file_path,"\n",pp,5);        //AlterDataFlie("./config/ppp.conf",":",pp,5,"bclb4eyr0");        DeleteDataFile(file_path,"\n","London");    }    /*     *对数据文件进行添加     *参数1，数据文件路径，参数二，行内数据分隔符，参数三，传入数据指针数组，参数四，数组下标个数     *     */    int AddDataFile(char *af_file_path,char *af_sign,char **pp,int *array_sum)    {        /*         *随机生成一个5到8位的随机数         */        unsigned int seedVal;        struct timeb timeBuf;        ftime(&timeBuf);        seedVal=((((unsigned int)timeBuf.time&0xFFFF)+                     (unsigned int)timeBuf.millitm)^                     (unsigned int)timeBuf.millitm);        srand((unsigned int)seedVal);        char buffer[10];        memset(buffer,0,sizeof(buffer));        int len = (rand() % (9-6))+ 7;        static const char string[]= "0123456789abcdefghiljklnopqrstuvwxyz";        int i;        for(i = 0; i < len; i++)        {            buffer[i] = string[rand()% (strlen(string)-1)];         }        char chnew_filebuf[256];        memset(chnew_filebuf,0,sizeof(chnew_filebuf));        strcat(chnew_filebuf,buffer);        int j;        for(j = 0;j < array_sum ; j++)        {            strcat(chnew_filebuf,af_sign);            strcat(chnew_filebuf,pp[j]);        }        printf("------->%s<---------/n",chnew_filebuf);        FILE *f;        f = fopen(af_file_path,"r+");        fseek(f,0,SEEK_END);        fseek(f,-1,SEEK_CUR);        if (fgetc(f)== 10)        {            fseek(f,0,SEEK_END);            fputs(chnew_filebuf,f);        }        else        {            fseek(f,0,SEEK_END);            fputs("/n",f);            fputs(chnew_filebuf,f);        }        fclose(f);    }    /*     *对数据文件进行修改     *参数1，数据文件路径，参数二，行内数据分隔符，参数三，传入数据指针数组，参数四，数组下标个数，参数五，修改标记值     */    int AlterDataFlie(char *alf_file_path,char *alf_sign,char **pp,int *array_sum,char *al_linesign)    {        char chnew_filebuf[256];        char datafile_linebuf[256];        char line_name[40];        char *leave_line;        memset(chnew_filebuf,0,sizeof(chnew_filebuf));        strcat(chnew_filebuf,al_linesign);        int i;        for(i = 0;i < array_sum ; i++)        {            strcat(chnew_filebuf,alf_sign);            strcat(chnew_filebuf,pp[i]);        }        printf("------->%s<---------/n",chnew_filebuf);        FILE *f;        f = fopen(alf_file_path,"r+");        if(f == NULL)        {            printf("OPEN CONFIG FALID/n");            return 0;        }        fseek(f,0,SEEK_END);        long datafile_lenth = ftell(f);        int datafilebuf_lenth = strlen(chnew_filebuf);        char sum_buf[datafile_lenth+datafilebuf_lenth];        memset(sum_buf,0,sizeof(sum_buf));        fseek(f,0,SEEK_SET);         while(fgets(datafile_linebuf,256,f) != NULL)        {               if(strlen(datafile_linebuf) < 3) //判断是否是空行            {                strcat(sum_buf,datafile_linebuf);                continue;            }            leave_line = NULL;            leave_line = strstr(datafile_linebuf,alf_sign);            if(leave_line == NULL)                            //去除无标记的情况            {                strcat(sum_buf,datafile_linebuf);                continue;            }            int leave_num = leave_line - datafile_linebuf;            memset(line_name,0,sizeof(line_name));            strncpy(line_name,datafile_linebuf,leave_num);            if(strcmp(line_name,al_linesign) ==0)            {                strcat(sum_buf,chnew_filebuf);                strcat(sum_buf,"/n");            }            else            {                strcat(sum_buf,datafile_linebuf);            }            if(fgetc(f)==EOF)            {                break;              }            fseek(f,-1,SEEK_CUR);            memset(datafile_linebuf,0,sizeof(datafile_linebuf));        }        printf("----->%s<------/n",sum_buf);                remove(alf_file_path);        fclose(f);        FILE *fp;        fp = fopen(alf_file_path,"w+");        if(fp == NULL)        {            printf("OPEN CONFIG FALID/n");            return 2;        }        fseek(fp,0,SEEK_SET);        fputs(sum_buf,fp);        fclose(fp);            }    /*     *对数据文件进行删除     *参数1，数据文件路径，参数二，行内数据分隔符，参数三，删除标记值     */    int DeleteDataFile(char *dlf_file_path,char *dlf_sign,char *dl_linesign)    {        char datafile_linebuf[256];        char line_name[40];        char *leave_line;                FILE *f;        f = fopen(dlf_file_path,"r+");        if(f == NULL)        {            printf("OPEN CONFIG FALID/n");            return 0;        }        fseek(f,0,SEEK_END);        long datafile_lenth = ftell(f);        char sum_buf[datafile_lenth];        memset(sum_buf,0,sizeof(sum_buf));        fseek(f,0,SEEK_SET);         while(fgets(datafile_linebuf,256,f) != NULL)        {               if(strlen(datafile_linebuf) < 3) //判断是否是空行            {                strcat(sum_buf,datafile_linebuf);                continue;            }            leave_line = NULL;            leave_line = strstr(datafile_linebuf,dlf_sign);            if(leave_line == NULL)                            //去除无标记的情况            {                strcat(sum_buf,datafile_linebuf);                continue;            }            int leave_num = leave_line - datafile_linebuf;            memset(line_name,0,sizeof(line_name));            strncpy(line_name,datafile_linebuf,leave_num);            if(strcmp(line_name,dl_linesign) ==0)            {                            }            else            {                strcat(sum_buf,datafile_linebuf);            }                        if(fgetc(f)==EOF)            {                break;              }            fseek(f,-1,SEEK_CUR);            memset(datafile_linebuf,0,sizeof(datafile_linebuf));        }        printf("---sum_buf---->%s<----------/n",sum_buf);        remove(dlf_file_path);        fclose(f);        FILE *fp;        fp = fopen(dlf_file_path,"w+");        if(fp == NULL)        {            printf("OPEN CONFIG FALID/n");            return 2;        }        fseek(fp,0,SEEK_SET);        fputs(sum_buf,fp);        fclose(fp);    }
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