mirror of
https://github.com/irssi/irssi.git
synced 2024-06-23 06:35:36 +00:00
63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
#ifndef IRSSI_CORE_UTF8_H
|
|
#define IRSSI_CORE_UTF8_H
|
|
|
|
/* XXX I didn't check the encoding range of big5+. This is standard big5. */
|
|
#define is_big5_los(lo) (0x40 <= (lo) && (lo) <= 0x7E) /* standard */
|
|
#define is_big5_lox(lo) (0x80 <= (lo) && (lo) <= 0xFE) /* extended */
|
|
#define is_big5_lo(lo) ((is_big5_los(lo) || is_big5_lox(lo)))
|
|
#define is_big5_hi(hi) (0x81 <= (hi) && (hi) <= 0xFE)
|
|
#define is_big5(hi,lo) (is_big5_hi(hi) && is_big5_lo(lo))
|
|
|
|
#include <glib.h>
|
|
typedef guint32 unichar;
|
|
|
|
/* Returns width for character (0-2). */
|
|
int i_wcwidth(unichar c);
|
|
|
|
/* Older variant of the above */
|
|
int mk_wcwidth(unichar c);
|
|
|
|
/* Signature for wcwidth implementations */
|
|
typedef int (*WCWIDTH_FUNC) (unichar ucs);
|
|
|
|
/* Advance the str pointer one character further; return the number of columns
|
|
* occupied by the skipped character.
|
|
*/
|
|
int string_advance(char const **str, int policy);
|
|
|
|
/* TREAT_STRING_AS_BYTES means strings are to be treated using strncpy,
|
|
* strnlen, etc.
|
|
* TREAT_STRING_AS_UTF8 means strings are to be treated using g_utf8_*
|
|
* functions.
|
|
*/
|
|
enum str_policy {
|
|
TREAT_STRING_AS_BYTES,
|
|
TREAT_STRING_AS_UTF8
|
|
};
|
|
|
|
/* Return how the str string ought to be treated: TREAT_STRING_AS_UTF8 if the
|
|
* terminal handles UTF-8 and if the string appears to be a valid UTF-8 string;
|
|
* TREAT_STRING_AS_BYTES otherwise.
|
|
*/
|
|
int string_policy(const char *str);
|
|
|
|
/* Return the length of the str string according to the given policy; if policy
|
|
* is -1, this function will call string_policy().
|
|
*/
|
|
int string_length(const char *str, int policy);
|
|
/* Return the screen width of the str string according to the given policy; if
|
|
* policy is -1, this function will call string_policy().
|
|
*/
|
|
int string_width(const char *str, int policy);
|
|
|
|
/* Return the amount of characters from str it takes to reach n columns, or -1 if
|
|
* str is NULL. Optionally return the equivalent amount of bytes.
|
|
* If policy is -1, this function will call string_policy().
|
|
*/
|
|
int string_chars_for_width(const char *str, int policy, unsigned int n, unsigned int *bytes);
|
|
|
|
#define unichar_isprint(c) (((c) & ~0x80) >= 32)
|
|
#define is_utf8_leading(c) (((c) & 0xc0) != 0x80)
|
|
|
|
#endif
|