function::kernel_string_utf32 - Linux
Overview
The function::kernel_string_utf32
command is designed to process and manipulate UTF-32 encoded strings within the Linux kernel. It provides a suite of functions to assist in string handling tasks, making it a valuable tool for kernel developers and programmers working with Unicode-based systems.
Syntax
void function::kernel_string_utf32(const char *str, ssize_t size);
Parameters:
- str: Pointer to a NULL-terminated UTF-32 encoded string.
- size: Size of the string in bytes.
Options/Flags
This command does not have any options or flags.
Examples
Example 1: Retrieving the length of a UTF-32 string
#include <linux/string.h>
int main() {
const char *str = "Hello, world!";
ssize_t size = function::kernel_string_utf32(str, strlen(str));
printf("String length: %ld\n", size);
return 0;
}
Example 2: Comparing two UTF-32 strings
#include <linux/string.h>
int main() {
const char *str1 = "String 1";
const char *str2 = "String 2";
int result = function::kernel_string_utf32_cmp(str1, str2,
strlen(str1), strlen(str2));
if (result == 0) {
printf("Strings are equal\n");
} else if (result > 0) {
printf("String 1 is lexicographically greater than String 2\n");
} else {
printf("String 2 is lexicographically greater than String 1\n");
}
return 0;
}
Common Issues
- Ensure that the provided string is a valid UTF-32 string. Invalid strings may result in unexpected behavior.
- Consider using the
function::kernel_string_utf32_try
function to handle potential errors gracefully.
Integration
The function::kernel_string_utf32
command can be integrated with other Linux commands or tools to perform advanced string processing tasks. For instance, it can be used in conjunction with the grep
command to search for UTF-32 strings within files or pipelines.
Related Commands
function::kernel_string_utf16
: Manipulates UTF-16 encoded strings in the kernel.function::kernel_string_utf8
: Manipulates UTF-8 encoded strings in the kernel.