c语言 csv格式解析字符串,C语言解析CSV文件！

╰+哭是因爲堅強的太久メ 2022-10-14 05:47 163阅读 0赞

\#include

\#define N 9

typedef struct a\{

char \*p\[N\];

int num;

\}A;

A \*split\_csv(char \*str)

char buffer\[128\];

int bwq  = 0; //begin with quote

int len = 0,i = 0,j = 0;

char ch;

char \*result;

A \*a;

len = strlen(str);

if(str == NULL ||  0 == len )                return NULL;        memset(buffer,'/0',sizeof(buffer));        a = (A \*)calloc(1,sizeof(A));        for(i=0;i=N)                        break;                ch = str\[i\];                if(ch == '/"')                \{                        if(bwq)                        \{                                i++;                                if(i>= len)                                \{                                        result = calloc(1,128);                                        sprintf(result,"%s",buffer);                                        a->p\[j++\] = result;                                        result = NULL;                                        bzero(buffer,128);                                        bwq=0;                                \}                                else                                \{                                    ch=str\[i\];                                    if (ch == '/"')                                    \{                                        sprintf(buffer,"%s%c",buffer,ch);                                    \}                                    else if (ch == ',')                                    \{                                                result = calloc(1,128);                                        sprintf(result,"%s",buffer);                                        a->p\[j++\] = result;                                        result = NULL;                                        bzero(buffer,128);                                        bwq=0;                                    \}                                    else                                    \{                                        return NULL;                                    \}                                \}                        \}                        else if(result == NULL ||0 == strlen(result))                        \{                                bwq = 1;                        \}                        else                        \{                                return NULL;                        \}                \}                else if(ch == ',')                \{                        if(bwq)                        \{                                sprintf(buffer,"%s%c",buffer,ch);                        \}                        else                        \{                                        result = calloc(1,128);                                sprintf(result,"%s",buffer);                                a->p\[j++\] = result;                                result = NULL;                                bzero(buffer,128);                                bwq=0;                        \}                \}                else                \{                        sprintf(buffer,"%s%c",buffer,ch);                \}        \}        if(jp\[j++\] = result;                result = NULL;        \}        a->num = j;        return a;\}void free\_a(A \*a)\{        int i = 0;        if(NULL == a)                return;        for(i = 0 ;i< a->num; i++)                free(a->p\[i\]);        free(a);        return ;\}int main(void)\{        char str\[1024\];        A \*a;        int i=0;        time\_t begin;        memset(str,'/0',1024);        sprintf(str,"%s","/"e,/"/"eee/",ddd,aaaa,bbb,ccc,111,222,333,4444");        a = split\_csv(str);        if(a == NULL)        \{                printf("NULL/n");                exit(0);        \}        for(i = 0;i< a->num;i++)                printf("%s/n",a->p\[i\]);        free\_a(a);\}