在带有strtok函数的空格中的c split char*中,除非引号之间

Question

有没有办法用strtok功能做到这一点？或任何建议？

示例:

Insert "hello world" to dbms

结果:

Insert
"hello world"
to
dbms

Answer 1

strtok或标准C库中的任何其他功能都无法为您执行此操作.要获得它,您必须自己编写代码,或者您必须在某些外部库中找到一些现有代码.

Answer 2

此函数采用定界、开放块和封闭块字符。块内的定界字符被忽略，结束块字符必须与开始块字符匹配。示例分隔空间和块由引号和方括号、大括号和 <> 定义。感谢 Jongware 的评论！

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

char *strmbtok ( char *input, char *delimit, char *openblock, char *closeblock) {
    static char *token = NULL;
    char *lead = NULL;
    char *block = NULL;
    int iBlock = 0;
    int iBlockIndex = 0;

    if ( input != NULL) {
        token = input;
        lead = input;
    }
    else {
        lead = token;
        if ( *token == '\0') {
            lead = NULL;
        }
    }

    while ( *token != '\0') {
        if ( iBlock) {
            if ( closeblock[iBlockIndex] == *token) {
                iBlock = 0;
            }
            token++;
            continue;
        }
        if ( ( block = strchr ( openblock, *token)) != NULL) {
            iBlock = 1;
            iBlockIndex = block - openblock;
            token++;
            continue;
        }
        if ( strchr ( delimit, *token) != NULL) {
            *token = '\0';
            token++;
            break;
        }
        token++;
    }
    return lead;
}

int main (int argc , char *argv[]) {
    char *tok;
    char acOpen[]  = {"\"[<{"};
    char acClose[] = {"\"]>}"};
    char acStr[] = {"this contains blocks \"a [quoted block\" and a [bracketed \"block] and <other ]\" blocks>"};

    tok = strmbtok ( acStr, " ", acOpen, acClose);
    printf ( "%s\n", tok);
    while ( ( tok = strmbtok ( NULL, " ", acOpen, acClose)) != NULL) {
        printf ( "%s\n", tok);
    }

    return 0;
}

输出
这
包含
块
“一个[引用块”
和
一个
[括起来的“块]
和

Answer 3

没有运气使用strtok()。

使用状态机的有趣机会。

#include <stdio.h>

void printstring(const char *frm, const char *to) {
  fputc('<', stdout);  // <...>\n Added for output clarity
  while (frm < to) {
    fputc(*frm++, stdout);
  }
  fputc('>', stdout);
  fputc('\n', stdout);
}

void split_space_not_quote(const char *s) {
  const char *start;
  int state = ' ';
  while (*s) {
    switch (state) {
      case '\n': // Could add various white-space here like \f \t \r \v
      case ' ': // Consuming spaces
        if (*s == '\"') {
          start = s;
          state = '\"';  // begin quote
        } else if (*s != ' ') {
          start = s;
          state = 'T';
        }
        break;
      case 'T': // non-quoted text
        if (*s == ' ') {
          printstring(start, s);
          state = ' ';
        } else if (*s == '\"') {
          state = '\"'; // begin quote
        }
        break;
      case '\"': // Inside a quote
        if (*s == '\"') {
          state = 'T'; // end quote
        }
        break;
    }
    s++;
  } // end while
  if (state != ' ') {
    printstring(start, s);
  }
}

int main(void) {
  split_space_not_quote("Insert \"hello world\" to dbms");
  return 0;
}

<Insert>
<"hello world">
<to>
<dbms>