分裂與strtok_r

Question

我經由命名管道命令接收與該格式的令牌的數目可變：

GETIP <machine_name> \n 
<process_id> 

GETNAME<ip_address> \n 
<process_id> 

UDATA <machine_name> <ip_address> 
<process_id> 

DDATA <machine_name> \n 
<process_id> 

所以，從管道的讀取樣本字符串是：

GETIP lolcatzmachine 
1235 

UDATA cheezburger 127.0.0.1 
7564 

如實，我不知道我到底在做什麼，我不熟悉c標記。我如何修改我的代碼以滿足要求？

char *token; 

char *commandName [10]; 
char machineName[200]; 
char ip[40]; 
char pid[30]; 

char * separator = " "; 
char *brkt; // reentrant pointer, as this tokenizing will be multithreaded 

for (; ;) { 

token=strtok_r(command_and_pid, separator, &brkt); //strtok_r is needed for multithreading 

commandName = strdup(token); 

    //ip=strtok_r(NULL, separator, &brkt); 

    //pid=strtok_r(NULL, separator, &brkt); 

    if (token == NULL) 
     break; 
} 

Answer 1

最後我使用的這個修改後的版本：

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

int 
main(int argc, char *argv[]) 
{ 
    char *str1, *str2, *token, *subtoken; 
    char *saveptr1, *saveptr2; 
    int j; 

    if (argc != 4) { 
     fprintf(stderr, "Usage: %s string delim subdelim\n", 
       argv[0]); 
     exit(EXIT_FAILURE); 
    } 

    for (j = 1, str1 = argv[1]; ; j++, str1 = NULL) { 

     token = strtok_r(str1, argv[2], &saveptr1); 

     if (token == NULL) 
      break; 
     printf("%d: %s\n", j, token); 

     for (str2 = token; ; str2 = NULL) { 
      subtoken = strtok_r(str2, argv[3], &saveptr2); 
      if (subtoken == NULL) 
       break; 
      printf("  --> %s\n", subtoken); 
     } 
    } 

    exit(EXIT_SUCCESS); 
} /* main */ 

Answer 2

看看這個。注：didnt測試&優化

#include <stdio.h> 
#include <string.h> 
#include <malloc.h> 

#include "strtok.h" 

//char temp[100]; 

char *strTok(char *string, char *delimiter) 
{ 
    static char *inputStr = NULL; 
    char *temp = NULL; 
    int i,count,j; 

    if (string != NULL) 
    { 

     if(inputStr != NULL) 
      free(inputStr);  

     inputStr = (char*) malloc (sizeof(char) * strlen(string)); 
     strcpy(inputStr,string); 

    } 

    for(i = 0 ; i < strlen(inputStr) ; i++) 
    { 
     if (inputStr[i] == delimiter[0]) 
     { 
      count = 1; 
      for(j = 1 ; j < strlen(delimiter) ; j++) 
      { 
       if (inputStr[i+j] == delimiter[j]) 
        count ++; 
       else 
        break; 
      }   
     } 

     if (count == strlen(delimiter)) 
     { 

      if(temp != NULL) 
       free(temp);  


      temp = (char*) malloc (sizeof(char) * i); 

      strncpy(temp,inputStr,i); 
      strcpy(inputStr,inputStr+i+strlen(delimiter)); 

      return temp; 

     } 


    } 

    return inputStr; 
} 

/*int main() 
{ 
    char *str = strTok("title:4:int",":"); 
    printf("%s\n",str); 

    str = strTok(NULL,":"); 
    printf("%s\n",str); 

    str = strTok(NULL,":"); 
    printf("%s\n",str); 

    str = strTok(NULL,":"); 
    printf("%s\n",str); 
    str = strTok("director:int:sdjjsd",":"); 
    printf("%s\n",str); 

    str = strTok(NULL,":"); 
    printf("%s\n",str); 


}*/