diff options
Diffstat (limited to 'include/shmbchar.h')
| -rw-r--r-- | include/shmbchar.h | 247 |
1 files changed, 3 insertions, 244 deletions
diff --git a/include/shmbchar.h b/include/shmbchar.h index a475f568..a4f3f247 100644 --- a/include/shmbchar.h +++ b/include/shmbchar.h @@ -16,132 +16,6 @@ /* Written by Bruno Haible <bruno@clisp.org>. */ -/* A multibyte character is a short subsequence of a char* string, - representing a single wide character. - - We use multibyte characters instead of wide characters because of - the following goals: - 1) correct multibyte handling, i.e. operate according to the LC_CTYPE - locale, - 2) ease of maintenance, i.e. the maintainer needs not know all details - of the ISO C 99 standard, - 3) don't fail grossly if the input is not in the encoding set by the - locale, because often different encodings are in use in the same - countries (ISO-8859-1/UTF-8, EUC-JP/Shift_JIS, ...), - 4) fast in the case of ASCII characters, - 5) portability, i.e. don't make unportable assumptions about wchar_t. - - Multibyte characters are only accessed through the mb* macros. - - mb_ptr (mbc) - return a pointer to the beginning of the multibyte sequence. - - mb_len (mbc) - returns the number of bytes occupied by the multibyte sequence. - Always > 0. - - mb_iseq (mbc, sc) - returns true if mbc is the standard ASCII character sc. - - mb_isnul (mbc) - returns true if mbc is the nul character. - - mb_cmp (mbc1, mbc2) - returns a positive, zero, or negative value depending on whether mbc1 - sorts after, same or before mbc2. - - mb_casecmp (mbc1, mbc2) - returns a positive, zero, or negative value depending on whether mbc1 - sorts after, same or before mbc2, modulo upper/lowercase conversion. - - mb_equal (mbc1, mbc2) - returns true if mbc1 and mbc2 are equal. - - mb_caseequal (mbc1, mbc2) - returns true if mbc1 and mbc2 are equal modulo upper/lowercase conversion. - - mb_isalnum (mbc) - returns true if mbc is alphanumeric. - - mb_isalpha (mbc) - returns true if mbc is alphabetic. - - mb_isascii(mbc) - returns true if mbc is plain ASCII. - - mb_isblank (mbc) - returns true if mbc is a blank. - - mb_iscntrl (mbc) - returns true if mbc is a control character. - - mb_isdigit (mbc) - returns true if mbc is a decimal digit. - - mb_isgraph (mbc) - returns true if mbc is a graphic character. - - mb_islower (mbc) - returns true if mbc is lowercase. - - mb_isprint (mbc) - returns true if mbc is a printable character. - - mb_ispunct (mbc) - returns true if mbc is a punctuation character. - - mb_isspace (mbc) - returns true if mbc is a space character. - - mb_isupper (mbc) - returns true if mbc is uppercase. - - mb_isxdigit (mbc) - returns true if mbc is a hexadecimal digit. - - mb_width (mbc) - returns the number of columns on the output device occupied by mbc. - Always >= 0. - - mb_putc (mbc, stream) - outputs mbc on stream, a byte oriented FILE stream opened for output. - - mb_setascii (&mbc, sc) - assigns the standard ASCII character sc to mbc. - - mb_copy (&destmbc, &srcmbc) - copies srcmbc to destmbc. - - Here are the function prototypes of the macros. - - typedef int bool; - extern const char * mb_ptr (const mbchar_t mbc); - extern size_t mb_len (const mbchar_t mbc); - extern bool mb_iseq (const mbchar_t mbc, char sc); - extern bool mb_isnul (const mbchar_t mbc); - extern int mb_cmp (const mbchar_t mbc1, const mbchar_t mbc2); - extern int mb_casecmp (const mbchar_t mbc1, const mbchar_t mbc2); - extern bool mb_equal (const mbchar_t mbc1, const mbchar_t mbc2); - extern bool mb_caseequal (const mbchar_t mbc1, const mbchar_t mbc2); - extern bool mb_isalnum (const mbchar_t mbc); - extern bool mb_isalpha (const mbchar_t mbc); - extern bool mb_isascii (const mbchar_t mbc); - extern bool mb_isblank (const mbchar_t mbc); - extern bool mb_iscntrl (const mbchar_t mbc); - extern bool mb_isdigit (const mbchar_t mbc); - extern bool mb_isgraph (const mbchar_t mbc); - extern bool mb_islower (const mbchar_t mbc); - extern bool mb_isprint (const mbchar_t mbc); - extern bool mb_ispunct (const mbchar_t mbc); - extern bool mb_isspace (const mbchar_t mbc); - extern bool mb_isupper (const mbchar_t mbc); - extern bool mb_isxdigit (const mbchar_t mbc); - extern int mb_width (const mbchar_t mbc); - extern void mb_putc (const mbchar_t mbc, FILE *stream); - extern void mb_setascii (mbchar_t *new, char sc); - extern void mb_copy (mbchar_t *new, const mbchar_t *old); - */ - #ifndef _SHMBCHAR_H #define _SHMBCHAR_H 1 @@ -158,126 +32,10 @@ #include <wchar.h> #include <wctype.h> -#define MBCHAR_BUF_SIZE 24 - -struct mbchar -{ - const char *ptr; /* pointer to current character */ - size_t bytes; /* number of bytes of current character, > 0 */ - int wc_valid; /* true if wc is a valid wide character */ - wchar_t wc; /* if wc_valid: the current character */ - char buf[MBCHAR_BUF_SIZE]; /* room for the bytes, used for file input only */ -}; - -/* EOF (not a real character) is represented with bytes = 0 and - wc_valid = false. */ - -typedef struct mbchar mbchar_t; - -/* Access the current character. */ -#define mb_ptr(mbc) ((mbc).ptr) -#define mb_len(mbc) ((mbc).bytes) - -/* Comparison of characters. */ -#define mb_iseq(mbc, sc) ((mbc).wc_valid && (mbc).wc == (sc)) -#define mb_isnul(mbc) ((mbc).wc_valid && (mbc).wc == 0) -#define mb_cmp(mbc1, mbc2) \ - ((mbc1).wc_valid \ - ? ((mbc2).wc_valid \ - ? (int) (mbc1).wc - (int) (mbc2).wc \ - : -1) \ - : ((mbc2).wc_valid \ - ? 1 \ - : (mbc1).bytes == (mbc2).bytes \ - ? memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) \ - : (mbc1).bytes < (mbc2).bytes \ - ? (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) > 0 ? 1 : -1) \ - : (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc2).bytes) >= 0 ? 1 : -1))) -#define mb_casecmp(mbc1, mbc2) \ - ((mbc1).wc_valid \ - ? ((mbc2).wc_valid \ - ? (int) towlower ((mbc1).wc) - (int) towlower ((mbc2).wc) \ - : -1) \ - : ((mbc2).wc_valid \ - ? 1 \ - : (mbc1).bytes == (mbc2).bytes \ - ? memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) \ - : (mbc1).bytes < (mbc2).bytes \ - ? (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) > 0 ? 1 : -1) \ - : (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc2).bytes) >= 0 ? 1 : -1))) -#define mb_equal(mbc1, mbc2) \ - ((mbc1).wc_valid && (mbc2).wc_valid \ - ? (mbc1).wc == (mbc2).wc \ - : (mbc1).bytes == (mbc2).bytes \ - && memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) == 0) -#define mb_caseequal(mbc1, mbc2) \ - ((mbc1).wc_valid && (mbc2).wc_valid \ - ? towlower ((mbc1).wc) == towlower ((mbc2).wc) \ - : (mbc1).bytes == (mbc2).bytes \ - && memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) == 0) - -/* <ctype.h>, <wctype.h> classification. */ -#define mb_isascii(mbc) \ - ((mbc).wc_valid && (mbc).wc >= 0 && (mbc).wc <= 127) -#define mb_isalnum(mbc) ((mbc).wc_valid && iswalnum ((mbc).wc)) -#define mb_isalpha(mbc) ((mbc).wc_valid && iswalpha ((mbc).wc)) -#define mb_isblank(mbc) ((mbc).wc_valid && iswblank ((mbc).wc)) -#define mb_iscntrl(mbc) ((mbc).wc_valid && iswcntrl ((mbc).wc)) -#define mb_isdigit(mbc) ((mbc).wc_valid && iswdigit ((mbc).wc)) -#define mb_isgraph(mbc) ((mbc).wc_valid && iswgraph ((mbc).wc)) -#define mb_islower(mbc) ((mbc).wc_valid && iswlower ((mbc).wc)) -#define mb_isprint(mbc) ((mbc).wc_valid && iswprint ((mbc).wc)) -#define mb_ispunct(mbc) ((mbc).wc_valid && iswpunct ((mbc).wc)) -#define mb_isspace(mbc) ((mbc).wc_valid && iswspace ((mbc).wc)) -#define mb_isupper(mbc) ((mbc).wc_valid && iswupper ((mbc).wc)) -#define mb_isxdigit(mbc) ((mbc).wc_valid && iswxdigit ((mbc).wc)) - -/* Extra <wchar.h> function. */ - -/* Unprintable characters appear as a small box of width 1. */ -#define MB_UNPRINTABLE_WIDTH 1 - -static inline int -mb_width_aux (wint_t wc) -{ - int w = wcwidth (wc); - /* For unprintable characters, arbitrarily return 0 for control characters - and MB_UNPRINTABLE_WIDTH otherwise. */ - return (w >= 0 ? w : iswcntrl (wc) ? 0 : MB_UNPRINTABLE_WIDTH); -} - -#define mb_width(mbc) \ - ((mbc).wc_valid ? mb_width_aux ((mbc).wc) : MB_UNPRINTABLE_WIDTH) - -/* Output. */ -#define mb_putc(mbc, stream) fwrite ((mbc).ptr, 1, (mbc).bytes, (stream)) - -/* Assignment. */ -#define mb_setascii(mbc, sc) \ - ((mbc)->ptr = (mbc)->buf, (mbc)->bytes = 1, (mbc)->wc_valid = 1, \ - (mbc)->wc = (mbc)->buf[0] = (sc)) - -/* Copying a character. */ -static inline void -mb_copy (mbchar_t *new_mbc, const mbchar_t *old_mbc) -{ - if (old_mbc->ptr == &old_mbc->buf[0]) - { - memcpy (&new_mbc->buf[0], &old_mbc->buf[0], old_mbc->bytes); - new_mbc->ptr = &new_mbc->buf[0]; - } - else - new_mbc->ptr = old_mbc->ptr; - new_mbc->bytes = old_mbc->bytes; - if ((new_mbc->wc_valid = old_mbc->wc_valid)) - new_mbc->wc = old_mbc->wc; -} - /* is_basic(c) tests whether the single-byte character c is in the - ISO C "basic character set". - This is a convenience function, and is in this file only to share code - between mbiter_multi.h and mbfile_multi.h. */ + ISO C "basic character set". */ + #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \ && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \ && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \ @@ -320,6 +78,7 @@ is_basic (char c) { switch (c) { + case '\b': case '\r': case '\n': case '\t': case '\v': case '\f': case ' ': case '!': case '"': case '#': case '%': case '&': case '\'': case '(': case ')': case '*': |