windows上的_splitpath函数在linux平台下的简单实现

进击的代码 2024-10-14 21:20:43

概览

在做移植时, 发现了 _splitpath 在 linux 下是没有的,于是决定自己写下,也不难。

首先百科到如下内容:

声明定义

void _splitpath( const char *path, char *drive, char *dir, char *fname, char *ext );

说明

分解路径,把你的完整路径给分割开来,就是一个对字符串进行分割的函数

参数表

path, Full path(完整路径)

drive , Optional drive letter, followed by a colon (:)( 磁盘驱动包含:)

dir, Optional directory path, including trailing slash. Forward slashes (/ ), backslashes (\ ), or both may be used.(文件路径,无论是以“/”,“\”)

fname, Base filename (no extension)(文件名)

ext , Optional filename extension, including leading period (.)(后缀名)

Linux 下实现及测试代码

#include <stdio.h>

#include <string.h>

#ifndef WIN32

void _splitpath(const char *path, char *drive, char *dir, char *fname, char *ext);

static void _split_whole_name(const char *whole_name, char *fname, char *ext);

#endif

/* main test */

int main(void)

{

char *path = "/home/test/dir/f123.txt";

// char *path = "/home/test/dir/123.txt";

// char *path = "/home/test/dir/123";

// char *path = "123";

// char *path = "123.txt";

char drive[128];

char dir[128];

char fname[128];

char ext[128];

_splitpath(path, drive, dir, fname, ext);

printf("path  = %s\n", path);

printf("dir   = %s\n", dir);

printf("fname = %s\n", fname);

printf("ext   = %s\n", ext);

return 0;

}

#ifndef WIN32

void _splitpath(const char *path, char *drive, char *dir, char *fname, char *ext)

{

char *p_whole_name;

drive[0] = '\0';

if (NULL == path)

{

dir[0] = '\0';

fname[0] = '\0';

ext[0] = '\0';

return;

}

if ('/' == path[strlen(path)])

{

strcpy(dir, path);

fname[0] = '\0';

ext[0] = '\0';

return;

}

p_whole_name = rindex(path, '/');

if (NULL != p_whole_name)

{

p_whole_name++;

_split_whole_name(p_whole_name, fname, ext);

snprintf(dir, p_whole_name - path, "%s", path);

}

else

{

_split_whole_name(path, fname, ext);

dir[0] = '\0';

}

}

static void _split_whole_name(const char *whole_name, char *fname, char *ext)

{

char *p_ext;

p_ext = rindex(whole_name, '.');

if (NULL != p_ext)

{

strcpy(ext, p_ext);

snprintf(fname, p_ext - whole_name + 1, "%s", whole_name);

}

else

{

ext[0] = '\0';

strcpy(fname, whole_name);

}

}

#endif

运行结果

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