Sponsored Content
Full Discussion: strlen for UTF-8
Top Forums Programming strlen for UTF-8 Post 302413932 by cyler on Sunday 18th of April 2010 12:04:50 PM
Old 04-18-2010
strlen for UTF-8

My OS (Debian) and gcc use the UTF-8 locale. This code says that the char size is 1 byte but the size of 'a' is really 4 bytes.
Code:
int main(void)
{
    setlocale(LC_ALL, "en_US.UTF-8");

    printf("Char size: %i\nSize of char 'a': %i\nSize of Euro sign '€': %i\nLength of Euro sign: %i\n", sizeof(char), sizeof('a'), sizeof('€'), strlen("€"));

    return 0;
}

Quote:
Char size: 1
Size of char 'a': 4
Size of Euro sign '€': 4
Length of Euro sign: 3
How can I make it output this which is more logical. I modified CHAR_BIT in limits.h to 32 but it still outputs 1 byte. Did I do something wrong ?
Quote:
Char size: 4
Size of char 'a': 4
Size of Euro sign '€': 4
Length of Euro sign: 1
 

10 More Discussions You Might Find Interesting

1. Programming

Problems with Strlen

hello, i have a problem with strlen. I have written this: for(y=13,z=0; cInBuf!=' ';y++) { cBuf=cInBuf; z++; } len = strlen(cBuf); out=len/2; fprintf(outfile,"F%i",out); If strlen is e.g. 22, it write F22. I want to write F2F2. How can i do this?... (5 Replies)
Discussion started by: ACeD
5 Replies

2. Shell Programming and Scripting

Problem with the strlen function in ksh

Hello, Just a little problem with the ksh function : strlen I want to use this function in this little ksh program : while read line ; do TOTO=$line TOTONB=strlen($TOTO) echo $TOTONB (3 Replies)
Discussion started by: steiner
3 Replies

3. Shell Programming and Scripting

UTF 8 and SED

Collegues I tried to manipulate a UTF 8 data using the following script. cat $1 | sed 's/ലായി$/ലായി LAYI/g' | sed 's/ുടെ/ുടെ UTE/g' | sed 's/യില്*/യില്* YIL/g' But it says that cnot exicute binary file. Any solution. Jaganadh. Linguist (1 Reply)
Discussion started by: jaganadh
1 Replies

4. Programming

'strlen' of a constant string

In a declaration, I have: const char comment_begin = "<!--"; const char comment_end = "-->"; const int comment_begin_len = strlen(comment_begin); const int comment_end_len = strlen(comment_end); When I compile, I get the warnings: emhttpc.c:64: warning: initializer element is not... (10 Replies)
Discussion started by: cleopard
10 Replies

5. Programming

pointer arithmetic vs. strlen() & strnlen()?

I have been getting some flack recently for my use of strlen() and strnlen(). Honestly I have always just taken their functionality for granted as being the easiest way of getting the length of a string. Is it really so much better to do pointer arithmetic? What am I gaining besides more... (3 Replies)
Discussion started by: jjinno
3 Replies

6. UNIX for Advanced & Expert Users

vi and UTF-8 errors

We just installed icu for UTF-8 compliance on our AIX 5.3 system. While usuing vi on some files we get the following error: ex: 0602-169 Incomplete or invalid multibyte character encountere yte character encountered, conversion failed.ex: 0602-169 Incomplete or invalidb ractersultibyte... (0 Replies)
Discussion started by: jlacasci
0 Replies

7. UNIX for Dummies Questions & Answers

UTF-8 in xterm

I need to use sort, uniq, grep, wc,... and the like to work with lists of words in UTF-8 (the "words" being phonetic transcriptions using the IPA). I have been using Google a lot and I even found at least one previous post on this topic, but it didn't help. I tried following the instructions... (2 Replies)
Discussion started by: mregine
2 Replies

8. Linux

Help to Convert file from UNIX UTF-8 to Windows UTF-16

Hi, I have tried to convert a UTF-8 file to windows UTF-16 format file as below from unix machine unix2dos < testing.txt | iconv -f UTF-8 -t UTF-16 > out.txt and i am getting some chinese characters as below which l opened the converted file on windows machine. LANG=en_US.UTF-8... (3 Replies)
Discussion started by: phanidhar6039
3 Replies

9. Programming

Segment fault related to strlen.S

Hello, This function was copied into my code, which was compiled without error/warning, but when executed there is always Segmentation fault at the end after the output (which seems correct!): void get_hashes(unsigned int hash, unsigned char *in) { unsigned char *str = in; int pos =... (7 Replies)
Discussion started by: yifangt
7 Replies

10. Shell Programming and Scripting

PHP: declared variables, strlen vs isset

greetings, pretty new to php and i think i might be missing some fundamental limitation of isset. i have two php scripts below that are executed by crond, one using --host X and one that does not. and below that are three different attempts at generating a command line that will be executed. the... (8 Replies)
Discussion started by: crimso
8 Replies
RUNE(2) 							System Calls Manual							   RUNE(2)

NAME
runetochar, chartorune, runelen, fullrune, utflen, utfrune, utfrrune, utfutf - rune/UTF conversion SYNOPSIS
#include <u.h> #include <libc.h> int runetochar(char *s, Rune *r) int chartorune(Rune *r, char *s) int runelen(long r) int fullrune(char *s, int n) int utflen(char *s) char* utfrune(char *s, long c) char* utfrrune(char *s, long c) char* utfutf(char *s1, char *s2) DESCRIPTION
These routines convert to and from a UTF byte stream and runes. Runetochar copies one rune at r to at most UTFmax bytes starting at s and returns the number of bytes copied. UTFmax, defined as 3 in <libc.h>, is the maximum number of bytes required to represent a rune. Chartorune copies at most UTFmax bytes starting at s to one rune at r and returns the number of bytes copied. If the input is not exactly in UTF format, chartorune will convert to 0x80 and return 1. Runelen returns the number of bytes required to convert r into UTF. Fullrune returns 1 if the string s of length n is long enough to be decoded by chartorune and 0 otherwise. This does not guarantee that the string contains a legal UTF encoding. This routine is used by programs that obtain input a byte at a time and need to know when a full rune has arrived. The following routines are analogous to the corresponding string routines with utf substituted for str and rune substituted for chr. Utflen returns the number of runes that are represented by the UTF string s. Utfrune (utfrrune) returns a pointer to the first (last) occurrence of rune c in the UTF string s, or 0 if c does not occur in the string. The NUL byte terminating a string is considered to be part of the string s. Utfutf returns a pointer to the first occurrence of the UTF string s2 as a UTF substring of s1, or 0 if there is none. If s2 is the null string, utfutf returns s1. SOURCE
/sys/src/libc/port/rune.c /sys/src/libc/port/utfrune.c SEE ALSO
utf(6), tcs(1) RUNE(2)
All times are GMT -4. The time now is 08:08 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy