argz_add_sep - Linux
Overview
argz_add_sep is a library function that appends a separator to an existing argz list. Argz lists are null-terminated arrays of character strings that are separated by spaces. They are commonly used to store arguments to a program.
Syntax
#include <argz.h>
int argz_add_sep(char **destination, const char *source,
size_t source_length, int separator, int contiguous);
Options/Flags
- destination: Pointer to destination argz list.
- source: NULL-terminated string that will be added to the argz list.
- source_length: Length of the source string.
- separator: Separator character to be used. Defaults to ‘ ‘.
- contiguous: Whether to make the argz list contiguous in memory. Defaults to 1.
Examples
Example 1: Appending a single string to an argz list:
char *argz[] = { "arg1", "arg2", NULL };
int err = argz_add_sep(argz, "arg3", -1, 0, 1);
Example 2: Appending a string with a custom separator:
char *argz[] = { "arg1", "arg2", NULL };
int err = argz_add_sep(argz, "arg3", -1, '|', 1);
Common Issues
- Memory management: argz_add_sep() allocates memory for the destination argz list. It is the caller’s responsibility to free this memory.
- Buffer overflow: If the source string is too long, it may overwrite adjacent memory. Ensure that the buffer is large enough to accommodate the source string plus the separator character.
Integration
argz_add_sep() can be used with other argz functions to manipulate argz lists. For example, it can be used with argz_next() to iterate over the argz list and with argz_delete() to remove entries from the list.
Related Commands
- argz_create()
- argz_append()
- argz_insert()
- argz_delete()