diff options
Diffstat (limited to 'rlmbutil.h')
| -rw-r--r-- | rlmbutil.h | 46 |
1 files changed, 43 insertions, 3 deletions
@@ -1,6 +1,6 @@ /* rlmbutil.h -- utility functions for multibyte characters. */ -/* Copyright (C) 2001-2009 Free Software Foundation, Inc. +/* Copyright (C) 2001-2015 Free Software Foundation, Inc. This file is part of the GNU Readline Library (Readline), a library for reading lines of text with interactive input and history editing. @@ -123,13 +123,53 @@ extern int _rl_walphabetic PARAMS((wchar_t)); #define MB_INVALIDCH(x) ((x) == (size_t)-1 || (x) == (size_t)-2) #define MB_NULLWCH(x) ((x) == 0) +/* Try and shortcut the printable ascii characters to cut down the number of + calls to a libc wcwidth() */ +static inline int +_rl_wcwidth (wc) + wchar_t wc; +{ + switch (wc) + { + case ' ': case '!': case '"': case '#': case '%': + case '&': case '\'': case '(': case ')': case '*': + case '+': case ',': case '-': case '.': case '/': + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + case ':': case ';': case '<': case '=': case '>': + case '?': + case 'A': case 'B': case 'C': case 'D': case 'E': + case 'F': case 'G': case 'H': case 'I': case 'J': + case 'K': case 'L': case 'M': case 'N': case 'O': + case 'P': case 'Q': case 'R': case 'S': case 'T': + case 'U': case 'V': case 'W': case 'X': case 'Y': + case 'Z': + case '[': case '\\': case ']': case '^': case '_': + case 'a': case 'b': case 'c': case 'd': case 'e': + case 'f': case 'g': case 'h': case 'i': case 'j': + case 'k': case 'l': case 'm': case 'n': case 'o': + case 'p': case 'q': case 'r': case 's': case 't': + case 'u': case 'v': case 'w': case 'x': case 'y': + case 'z': case '{': case '|': case '}': case '~': + return 1; + default: + return wcwidth (wc); + } +} + /* Unicode combining characters range from U+0300 to U+036F */ #define UNICODE_COMBINING_CHAR(x) ((x) >= 768 && (x) <= 879) #if defined (WCWIDTH_BROKEN) -# define WCWIDTH(wc) ((_rl_utf8locale && UNICODE_COMBINING_CHAR(wc)) ? 0 : wcwidth(wc)) +# define WCWIDTH(wc) ((_rl_utf8locale && UNICODE_COMBINING_CHAR(wc)) ? 0 : _rl_wcwidth(wc)) +#else +# define WCWIDTH(wc) _rl_wcwidth(wc) +#endif + +#if defined (WCWIDTH_BROKEN) +# define IS_COMBINING_CHAR(x) (WCWIDTH(x) == 0 && iswcntrl(x) == 0) #else -# define WCWIDTH(wc) wcwidth(wc) +# define IS_COMBINING_CHAR(x) (WCWIDTH(x) == 0) #endif #else /* !HANDLE_MULTIBYTE */ |