utf8strnchr()

Search for a UTF-8 character in part of a string

Synopsis:

#include <utf8.h>

char * utf8strnchr( char const *string,
                    char const *mbchar, 
                    int num, 
                    int *count );

Arguments:

string

A pointer to the string to search.

mbchar

The character to look for.

num

The maximum number of characters to search in the string.

count

A pointer to the location where utf8strnchr() stores the number of UTF-8 characters the matching character is from the start of the string.

Library:

ph

Description:

This function searches for a UTF-8 character in string that matches mbchar. The match must occur in the first num UTF-8 characters. If such a match is found, count (if provided) is set to the number of UTF-8 characters the matching character is from the beginning of the string. For example, if mbchar matches the first character in string, count is set to 0. If mbchar matches the second character in string, count is set to 1.

Returns:

A pointer to the beginning of the matching character within string. If no match is found within num characters, the function returns NULL and doesn't change count.

Examples:

Search the first 5 UTF-8 characters for a match to the provided UTF-8 character:

#include <Pt.h>

int main()
  {
  char string[] = "Hello there: äîòéü found"; 
  char mbchar[] = "é";
  int count;
  char *p;

  if( (p = utf8strchr( string, mbchar, 5, &count ) ) )
    printf( 
      "Character found: character offset %d\n byte offset %d.\n",
      count, p - string );
  else
    printf( "Not found.\" );
  return EXIT_SUCCESS;
  }

Classification:

Photon

See also:

utf8strchr(), utf8strichr(), utf8strnichr(), utf8strrchr(), utf8strirchr()

Unicode Multilingual Support in the Photon Programmer's Guide