Dealing with strings containing embedded null characters

hi,

how can I get the length of a string that has embedded '\0' ?

Code:

---

char * foo = "abcde\0fgh\0ijkl";
printf ("%s\n", foo);            /* this only prints out: abcde */
printf("%d\n", strlen(foo));  /* this displays: 5 instead of 12 (or is it 14 ?) */

---

Thanks
--Andrew

You'd have to define your own terminator, say a double null, and write a set of functions to deal with such a thing.

Code:

---

char * foo = "abcde\0fgh\0ijkl\0";

---

There is no such a thing as a string that has an embedded \0. By definition, a string stops at a \0 character.

What are you actually trying to accomplish?

What i'm trying to do is read and display the contents of a file, specifically "/proc/<pid>/cmdline"
file (file size happens to be 0-bytes) on Linux. The contents of "cmdline" file contain embedded '\0' characters
and represent the command line arguments for a given process. The '\0' character is the delimiter of each argument.

Thanks
--Andrew

Quote:

---

Originally Posted by mr_c

What i'm trying to do is read and display the contents of a file, specifically "/proc/<pid>/cmdline"
file (file size happens to be 0-bytes) on Linux. The contents of "cmdline" file contain embedded '\0' characters
and represent the command line arguments for a given process. The '\0' character is the delimiter of each argument.

Thanks
--Andrew

---

I expect that follows the same concept as environment variables: It has a double zero at the end. Use "od -x /proc/<pid>/cmdline" to display it in hex, and I believe you will see the end is two zero bytes.

--
Mats