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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct 
  5. {
  6.     int count;
  7. 	int reserved;
  8.     double *tab;
  9. } FloatVector;
  10.  
  11. FloatVector *FloatVectorCreate(int reserve)
  12. {
  13. 	FloatVector *result = (FloatVector *)malloc(sizeof(FloatVector));
  14. 	if (result)
  15. 	{
  16. 		result->tab = (double *)malloc(sizeof(*result->tab) * reserve);
  17. 		result->count = 0;
  18. 		result->reserved = reserve;
  19. 	}
  20. 	return result;
  21. }
  22.  
  23. void FloatVectorFree(FloatVector *vec)
  24. {
  25. 	if (vec)
  26. 	{
  27. 		free(vec->tab);
  28. 		free(vec);
  29. 	}
  30. }
  31.  
  32. void FloatVectorAppend(FloatVector *vec, double x)
  33. {
  34. 	if (vec->count >= vec->reserved)
  35. 	{
  36. 		vec->reserved += 0x10;
  37. 		vec->tab = realloc(vec->tab, sizeof(*vec->tab) * vec->reserved);
  38. 	}
  39. 	vec->tab[vec->count++] = x;
  40. }
  41.  
  42. FloatVector *FloatVectorCreateFormString(const char *line)
  43. {
  44. 	FloatVector *vec = FloatVectorCreate(0x10);
  45. 	char *p = (char *)line;
  46. 	while (1)
  47. 	{
  48. 		char *q = p;
  49. 		double x = strtod(q, &p);
  50. 		if (p == q)
  51. 			break;
  52. 		FloatVectorAppend(vec, x);
  53. 	}
  54. 	return vec;
  55. }
  56.  
  57. int ReadCSV(FILE* f, FloatVector ***data)
  58. {
  59. 	char buffer[0x800];
  60. 	int reservedDataSize = 0x10;
  61. 	int dataSize = 0;
  62.  
  63. 	*data = calloc(reservedDataSize, sizeof(FloatVector *));
  64.  
  65. 	while (fgets(buffer, sizeof(buffer), f))
  66. 	{
  67. 		if (dataSize >= reservedDataSize)
  68. 		{
  69. 			reservedDataSize += 0x10;
  70. 			*data = (FloatVector **)realloc(*data, reservedDataSize * sizeof(FloatVector *));
  71. 		}
  72. 		(*data)[dataSize++] = FloatVectorCreateFormString(buffer);
  73. 	}
  74. 	return dataSize;
  75. }
  76.  
  77. int main(void) {
  78. 	FloatVector **data;
  79.  
  80. 	int size = ReadCSV(stdin, &data);
  81.  
  82. 	for (int i=0; i<size; ++i)
  83. 	{
  84. 		printf("%d\n", data[i]->count);
  85. 		for (int j=0; j<data[i]->count; ++j)
  86. 			printf(" %4lg", data[i]->tab[j]);
  87. 		printf("\n");
  88. 	}
  89.  
  90. 	for (int i=0; i<size; ++i)
  91. 	{
  92. 		FloatVectorFree(data[i]);
  93. 	}
  94. 	free(data);
  95. 	return 0;
  96. }
  97.  
Success #stdin #stdout 0s 2304KB
comments (?)
stdin
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12.3 32.2 322.2
12.3 0.0
0.0
1.1 złe dane 32.2
jeszcze nie koniec 2.2
0.2e-3
stdout
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3
 12.3 32.2 322.2
2
 12.3    0
1
    0
1
  1.1
0

1
 0.0002
https://ideone.com/JpHCAT
CSV parsing in C
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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