便携式getopt_long等效用于shell脚本

我有一个程序getoptx,它使用单字母选项(因此它不是你的问题的答案),但它正确处理带空格的参数,原始的getopt命令(而不是shell内置的getopts)不.源代码中的规范说：

/*
** Usage: eval set -- $(getoptx abc: "$@")
**        eval set -- $(getoptx abc: -a -c 'a b c' -b abc 'd e f')
** The positional parameters are:
** $1 = "-a"
** $2 = "-c"
** $3 = "a b c"
** $4 = "-b"
** $5 = "--"
** $6 = "abc"
** $7 = "d e f"
**
** The advantage of this over the standard getopt program is that it handles
** spaces and other metacharacters (including single quotes) in the option
** values and other arguments.  The standard code does not!  The downside is
** the non-standard invocation syntax compared with:
**
**        set -- $(getopt abc: "$@")
*/

我推荐你的getopt_long的eval set – $(getopt_long“$optspec”“$@”)表示法.

getopt_long的一个主要问题是参数规范的复杂性 – 示例中的$optspec.

您可能需要查看Solaris CLIP(命令行界面范例)中使用的符号表示法;它使用单个字符串(如原始的getopt()函数)来描述选项. (谷歌：’solaris剪辑命令行界面范例’;只使用’solaris剪辑’可以获得视频剪辑.)

这个材料是从Sun的getopt_clip()派生的部分示例：

/*

Example 2: Check Options and Arguments.

The following example parses a set of command line options and prints
messages to standard output for each option and argument that it
encounters.

This example can be expanded to be CLIP-compliant by substituting the
long string for the optstring argument:

While not encouraged by the CLIP specification,multiple long-option
aliases can also be assigned as shown in the following example:

:a(ascii)b(binary):(in-file)(input)o:(outfile)(output)V(version)?(help)

*/

static const char *arg0 = 0;

static void print_help(void)
{
    printf("Usage: %s [-a][-b][-V][-?][-f file][-o file][path ...]n",arg0);
    printf("Usage: %s [-ascii][-binary][-version][-in-file file][-out-file file][path ...]n",arg0);
    exit(0);
}

static const char optstr[] =
    ":a(ascii)b(binary)f:(in-file)o:(out-file)V(version)?(help)";

int main(int argc,char **argv)
{
    int c;
    char *filename;

    arg0 = argv[0];
    while ((c = getopt_clip(argc,argv,optstr)) != -1)
    {
        ...
    }
    ...
}