зеркало из https://github.com/github/ruby.git
53 строки
1.3 KiB
C
53 строки
1.3 KiB
C
#include "yarp/enc/yp_encoding.h"
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static size_t
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yp_encoding_big5_char_width(const uint8_t *b, ptrdiff_t n) {
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// These are the single byte characters.
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if (*b < 0x80) {
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return 1;
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}
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// These are the double byte characters.
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if ((n > 1) && (b[0] >= 0xA1 && b[0] <= 0xFE) && (b[1] >= 0x40 && b[1] <= 0xFE)) {
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return 2;
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}
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return 0;
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}
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static size_t
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yp_encoding_big5_alpha_char(const uint8_t *b, ptrdiff_t n) {
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if (yp_encoding_big5_char_width(b, n) == 1) {
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return yp_encoding_ascii_alpha_char(b, n);
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} else {
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return 0;
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}
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}
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static size_t
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yp_encoding_big5_alnum_char(const uint8_t *b, ptrdiff_t n) {
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if (yp_encoding_big5_char_width(b, n) == 1) {
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return yp_encoding_ascii_alnum_char(b, n);
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} else {
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return 0;
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}
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}
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static bool
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yp_encoding_big5_isupper_char(const uint8_t *b, ptrdiff_t n) {
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if (yp_encoding_big5_char_width(b, n) == 1) {
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return yp_encoding_ascii_isupper_char(b, n);
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} else {
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return false;
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}
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}
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yp_encoding_t yp_encoding_big5 = {
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.name = "big5",
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.char_width = yp_encoding_big5_char_width,
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.alnum_char = yp_encoding_big5_alnum_char,
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.alpha_char = yp_encoding_big5_alpha_char,
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.isupper_char = yp_encoding_big5_isupper_char,
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.multibyte = true
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};
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