解析CSV文件转换成字符串

的二维数组我有一个字符串的CSV，看起来像这样：解析CSV文件转换成字符串

"","Orange","","","","","","Red","" 
"Orange","","Blue","","","","","Black","" 
"","Blue","","Pink","","Any","","","Any" 
"","","Pink","","Green","Red","","","" 
"","","","Green","","Blue","","","" 
"","","Any","","BLue","","Orange","","" 
"","","","Red","","Orange","","Green","Black" 
"Red","Black","","","","","Green","","Yellow" 
"","","Any","","","","Black","Yellow",""

，我想将其放入字符串二维数组（我会忽略稍后引号）。我尝试了许多不同的想法，但似乎无法正常工作。

这段代码很近，但输出关闭的方式我无法理解。它也可以正确解析和标记文件。它将令牌放入数组时似乎变得很糟糕。下面是我的程序所采取的代码：

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

#define VERTICES 9 

int main(void) 
{ 
    const char *colors[VERTICES][VERTICES]; 

    char buffer[1024]; 
    char *record, *line; 
    int i = 0; 
    int j = 0; 
    FILE *fstream = fopen("Colors.dat", "r"); 
    if (fstream == NULL) 
    { 
     printf("\n file opening failed\n"); 
     return -1; 
    } 
    while ((line = fgets(buffer, sizeof(buffer), fstream)) != NULL) 
    { 
     record = strtok(line, ","); 
     while(record != NULL) 
     { 
      printf(" %s", record); 
      colors[i][j] = record; 
      //printf(" %s"), colors[i][j]; 
      record = strtok(NULL, ","); 
      j++; 
     } 
     j = 0; 
     ++i; 
    } 

    printf("\n============================================\n\n"); 

    for (i = 0; i < VERTICES; i++) 
    { 
      for (j = 0; j < VERTICES; j++) 
      { 
       printf("%s | ", colors[i][j]); 
      } 
     printf("\n"); 
    } 
    return 0; 
}

如果取消对该行的第二嵌套while循环和注释掉两个for循环你奇数输出为好。谢谢！

来源

2016-06-09 ddschmitz

也许像'颜色[i] [j] =记录;' - >'颜色[我] [j] = strdup（record）;'''colors'，就像现在使用的那样，只是将指针填入'buffer'。 – chux

@chux哇，这可能已经完成了。你想把它放在回答？ – ddschmitz

OP是简单记录读取缓冲区的地址，它在后续读取时得到更新。

需要分配/复制字符串供以后使用。

// colors[i][j] = record; 
colors[i][j] = strdup(record);

在一条线的其余colors[i][j]应设置为NULL。。

 while(j < VERTICES && record != NULL) { 
     printf(" %s", record); 
     colors[i][j] = strdup(record); 
     assert(colors[i][j]); 
     record = strtok(NULL, ","); 
     j++; 
    } 
    while(j < VERTICES) { 
     colors[i][j] = NULL; 
     j++; 
    }

健壮的代码也将检查分配故障（assert(colors[i][j])并在完成后会释放memroy

来源

2016-06-09 20:36:18 chux

解析CSV文件转换成字符串

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