[英]strtok delimiters issue on a JSON format string
使用以下定界符和子定界符,由于我已将“,”声明为字符串定界符的一部分,因此我找不到一种将发行者值作为整个字符串检索的方法。 请帮忙。
输入字符串是一个char *数组:(对不起,字符串是一个证书)
{"first name":"Jhon","thumbprint":"*********","issuer":"CN=dccw, OU=cswde, O=xswe,
L=sdewc","validto":"Mon Jan 01 22:59:59 EST
2018","lastname":"Doe","userid":"DJhon","valid from":"Mon Aug 15
00:00:00 EDT 2011","subjectInfor":"************"}
码
char* delim = "{}";
char* subdelim = ":,";
char *str1, *token, *name, *value;
int parse_count = 0;
for (str1 = stringToParse; parse_count<num ; str1 = NULL) {
token = strtok(str1, delim);
if (token == NULL)
break;
name = strtok(token, subdelim);
value = strtok(NULL, subdelim);
if (name == NULL || value == NULL) {
continue;
}
strcpy (ptr->name, name);
strcpy (ptr->value, value);
ptr++;
parse_count++;
}
return name_values;
}
输出:
printf("%s=%s\n", params->name, params->value);
first name=Jhon
last name=Doe
userid=DJhon
我认为使用JSON库更好,但是使用sscanf可以进行简单的解析。
#include <stdio.h>
#include <string.h>
int main(void){
char data[]="{\"first name\":\"Jhon\",\"thumbprint\":\"*********\",\"issuer\":\"CN=dccw, OU=cswde, O=xswe, L=sdewc\",\"validto\":\"Mon Jan 01 22:59:59 EST 2018\",\"lastname\":\"Doe\",\"userid\":\"DJhon\",\"valid from\":\"Mon Aug 15 00:00:00 EDT 2011\",\"subjectInfor\":\"************\"}";
char *contents = strtok(data, "{}");//remove '{' and '}' : note that is not included in the content
char key[128], value[128];
int len;
while(2==sscanf(contents, "\"%127[^\"]\":\"%127[^\"]\",%n", key, value, &len)){
if(!strcmp(key, "first name") || !strcmp(key, "lastname") || !strcmp(key, "userid"))
printf("%s=%s\n", key, value);
contents += len;
}
return 0;
}
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