我的Linux C函数库（adding）

最新推荐文章于 2024-12-21 17:25:44 发布

原创最新推荐文章于 2024-12-21 17:25:44 发布 · 996 阅读

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CC 4.0 BY-SA版权

文章标签：

#linux #whitespace #initialization #c #string #null

本文介绍了一个用于将字符串按空白字符分割的C语言函数parseCommand。该函数可以将输入的字符串cLine按照定义好的空白字符集WHITESPACE进行分割，并将分割后的各个子串存入指针数组pchar中。

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tags:string,char,seprate,whitespace
from:minishell project
function code:

void parseString(char *cLine, char *pchar[]) {
    int argc;
    char *tCLine;
    char **clPtr;
// Initialization
    tCLine = cLine;
    clPtr = &tCLine;
    argc = 0;
// This code does not handle multiple WHITESPACE characters
    while((pchar[argc++] = strsep(clPtr, WHITESPACE)) != NULL) ;

    pchar[argc--] = '';    // Null terminated list of strings
}

example:

/*example of the use of parseCommand()*/
#include <stdio.h>
#include <string.h>
#define WHITESPACE    " ., &"
#define TRUE 1
void parseCommand(char *,char **);
main()
{
    char s[100]="abcdefg hijklmn opq rst uvw xyz";
    char *sp[30];
    int i=0;
    printf("s=%s ",s);
    parseCommand(s,sp);
    int j;
    for( j=0 ; j<i ;j++)
        printf("sp[%d]=%s ",j,sp[j]);

}
/*parseCommand()
   *seprate cLine by WHITESPACE,put them to pchar[]
   *#define WHITESPACE    " ., &"
   *bugs:This code does not handle multiple WHITESPACE characters
*/
void parseCommand(char *cLine, char *pchar[]) {
    int argc;
    char *tCLine;
    char **clPtr;
// Initialization
    tCLine = cLine;
    clPtr = &tCLine;
    argc = 0;
// This code does not handle multiple WHITESPACE characters
    while((pchar[argc++] = strsep(clPtr, WHITESPACE)) != NULL);

    pchar[argc--] = '';    // Null terminated list of strings
}