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-rw-r--r--Makefile7
-rw-r--r--convert-to-domino-tiles.c22
-rw-r--r--libcharconv.h72
-rw-r--r--libcharconv_domino_tiles_horizontal.c85
-rw-r--r--libcharconv_domino_tiles_vertical.c85
-rw-r--r--libcharconv_latin.c17
6 files changed, 286 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index 54016f9..3983e26 100644
--- a/Makefile
+++ b/Makefile
@@ -48,7 +48,8 @@ BIN =\
convert-to-superscript\
convert-to-subscript\
convert-to-lydian\
- convert-to-lycian
+ convert-to-lycian\
+ convert-to-domino-tiles
LIBOBJ =\
libcharconv_decode_utf8_.o\
@@ -84,7 +85,9 @@ LIBOBJ =\
libcharconv_superscript.o\
libcharconv_subscript.o\
libcharconv_lydian.o\
- libcharconv_lycian.o
+ libcharconv_lycian.o\
+ libcharconv_domino_tiles_horizontal.o\
+ libcharconv_domino_tiles_vertical.o
LOBJ = $(LIBOBJ:.o=.lo)
diff --git a/convert-to-domino-tiles.c b/convert-to-domino-tiles.c
new file mode 100644
index 0000000..abb33f4
--- /dev/null
+++ b/convert-to-domino-tiles.c
@@ -0,0 +1,22 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("[-h | -v]");
+
+
+int
+main(int argc, char *argv[])
+{
+ int vertical = 0;
+
+ ARGBEGIN {
+ case 'h': vertical = 0; break;
+ case 'v': vertical = 1; break;
+ default:
+ usage();
+ } ARGEND;
+ if (argc)
+ usage();
+
+ return convert(vertical ? &libcharconv_domino_tiles_vertical : &libcharconv_domino_tiles_horizontal);
+}
diff --git a/libcharconv.h b/libcharconv.h
index 9eab393..9eac800 100644
--- a/libcharconv.h
+++ b/libcharconv.h
@@ -1093,4 +1093,76 @@ enum libcharconv_result libcharconv_lydian(const char *s, size_t slen, size_t *n
enum libcharconv_result libcharconv_lycian(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp);
+/**
+ * Convert a pair of [0, 6]-digits to domino tiles,
+ * or "##" to the back of a domino tiles. The tile
+ * will be horizontal by default, but '|' or '-' can
+ * be added between the two symbols to select
+ * horizontal ('|') or vertical ('-') orientation
+ *
+ * @param s Text to convert
+ * @param slen The number of bytes available in `s`
+ * @param n Output parameter for the number of consumed bytes
+ * @param cp Output buffer for the codepoints
+ * @param ncp Input parameter for the number of codepoints that
+ * fit in `cp`, and output parameter for the number
+ * of output codepoints (if it exceeds the original
+ * value of `ncp`, a larger buffer is needed)
+ * @return LIBCHARCONV_NO_CONVERT:
+ * `*n` is the number of bytes from the beginning
+ * of `s` that cannot be converted
+ * LIBCHARCONV_CONVERTED:
+ * `*n` is the number of bytes from the beginning
+ * of `s` that was converted to a codepoint which
+ * is stored in `*cp`
+ * LIBCHARCONV_INDETERMINATE:
+ * If all text has been input, no more can be
+ * converted, otherwise more of the text most
+ * be made available before the function can
+ * determine whether the beginning of `s` can be
+ * converted or what it should be converted to
+ * LIBCHARCONV_CONVERT_IF_END:
+ * As LIBCHARCONV_CONVERTED the entire text has
+ * been input, as LIBCHARCONV_INDETERMINATE
+ * otherwise
+ */
+enum libcharconv_result libcharconv_domino_tiles_horizontal(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp);
+
+
+/**
+ * Convert a pair of [0, 6]-digits to domino tiles,
+ * or "##" to the back of a domino tiles. The tile
+ * will be vertical by default, but '|' or '-' can
+ * be added between the two symbols to select
+ * horizontal ('|') or vertical ('-') orientation
+ *
+ * @param s Text to convert
+ * @param slen The number of bytes available in `s`
+ * @param n Output parameter for the number of consumed bytes
+ * @param cp Output buffer for the codepoints
+ * @param ncp Input parameter for the number of codepoints that
+ * fit in `cp`, and output parameter for the number
+ * of output codepoints (if it exceeds the original
+ * value of `ncp`, a larger buffer is needed)
+ * @return LIBCHARCONV_NO_CONVERT:
+ * `*n` is the number of bytes from the beginning
+ * of `s` that cannot be converted
+ * LIBCHARCONV_CONVERTED:
+ * `*n` is the number of bytes from the beginning
+ * of `s` that was converted to a codepoint which
+ * is stored in `*cp`
+ * LIBCHARCONV_INDETERMINATE:
+ * If all text has been input, no more can be
+ * converted, otherwise more of the text most
+ * be made available before the function can
+ * determine whether the beginning of `s` can be
+ * converted or what it should be converted to
+ * LIBCHARCONV_CONVERT_IF_END:
+ * As LIBCHARCONV_CONVERTED the entire text has
+ * been input, as LIBCHARCONV_INDETERMINATE
+ * otherwise
+ */
+enum libcharconv_result libcharconv_domino_tiles_vertical(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp);
+
+
#endif
diff --git a/libcharconv_domino_tiles_horizontal.c b/libcharconv_domino_tiles_horizontal.c
new file mode 100644
index 0000000..5edf493
--- /dev/null
+++ b/libcharconv_domino_tiles_horizontal.c
@@ -0,0 +1,85 @@
+/* See LICENSE file for copyright and license details. */
+#include "lib-common.h"
+
+
+enum libcharconv_result
+libcharconv_domino_tiles_horizontal(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
+{
+ uint_least32_t c;
+ int vertical;
+ *n = 0;
+ for (; slen--; s++) {
+ if ('0' <= s[0] && s[0] <= '6') {
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ vertical = 0;
+ if (s[1] == '|')
+ vertical = 0;
+ else if (s[1] == '-')
+ vertical = 1;
+ else if ('0' <= s[1] && s[1] <= '6')
+ goto conv2;
+ else
+ goto no_match;
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ if ('0' <= s[2] && s[2] <= '6')
+ goto conv3;
+ goto no_match;
+ } else if (s[0] == '#') {
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ vertical = 0;
+ if (s[1] == '|')
+ vertical = 0;
+ else if (s[1] == '-')
+ vertical = 1;
+ else if (s[1] == '#')
+ goto conv2;
+ else
+ goto no_match;
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ if (s[2] == '#')
+ goto conv3;
+ goto no_match;
+ } else {
+ no_match:
+ *n += 1u;
+ }
+ }
+no_conv:
+ return LIBCHARCONV_NO_CONVERT;
+
+conv2:
+ if (*n)
+ goto no_conv;
+ if (*ncp) {
+ if (s[0] == '#')
+ c = UINT32_C(0x1F030);
+ else
+ c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[1] - '0');
+ if (vertical)
+ c += UINT32_C(0x1F062) - UINT32_C(0x1F030);
+ *cp = c;
+ }
+ *n += 2u;
+ *ncp = 1u;
+ return LIBCHARCONV_CONVERTED;
+
+conv3:
+ if (*n)
+ goto no_conv;
+ if (*ncp) {
+ if (s[0] == '#')
+ c = UINT32_C(0x1F030);
+ else
+ c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[2] - '0');
+ if (vertical)
+ c += UINT32_C(0x1F062) - UINT32_C(0x1F030);
+ *cp = c;
+ }
+ *n += 3u;
+ *ncp = 1u;
+ return LIBCHARCONV_CONVERTED;
+}
diff --git a/libcharconv_domino_tiles_vertical.c b/libcharconv_domino_tiles_vertical.c
new file mode 100644
index 0000000..0df1841
--- /dev/null
+++ b/libcharconv_domino_tiles_vertical.c
@@ -0,0 +1,85 @@
+/* See LICENSE file for copyright and license details. */
+#include "lib-common.h"
+
+
+enum libcharconv_result
+libcharconv_domino_tiles_vertical(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
+{
+ uint_least32_t c;
+ int vertical;
+ *n = 0;
+ for (; slen--; s++) {
+ if ('0' <= s[0] && s[0] <= '6') {
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ vertical = 1;
+ if (s[1] == '|')
+ vertical = 0;
+ else if (s[1] == '-')
+ vertical = 1;
+ else if ('0' <= s[1] && s[1] <= '6')
+ goto conv2;
+ else
+ goto no_match;
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ if ('0' <= s[2] && s[2] <= '6')
+ goto conv3;
+ goto no_match;
+ } else if (s[0] == '#') {
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ vertical = 1;
+ if (s[1] == '|')
+ vertical = 0;
+ else if (s[1] == '-')
+ vertical = 1;
+ else if (s[1] == '#')
+ goto conv2;
+ else
+ goto no_match;
+ if (!slen--)
+ return LIBCHARCONV_INDETERMINATE;
+ if (s[2] == '#')
+ goto conv3;
+ goto no_match;
+ } else {
+ no_match:
+ *n += 1u;
+ }
+ }
+no_conv:
+ return LIBCHARCONV_NO_CONVERT;
+
+conv2:
+ if (*n)
+ goto no_conv;
+ if (*ncp) {
+ if (s[0] == '#')
+ c = UINT32_C(0x1F030);
+ else
+ c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[1] - '0');
+ if (vertical)
+ c += UINT32_C(0x1F062) - UINT32_C(0x1F030);
+ *cp = c;
+ }
+ *n += 2u;
+ *ncp = 1u;
+ return LIBCHARCONV_CONVERTED;
+
+conv3:
+ if (*n)
+ goto no_conv;
+ if (*ncp) {
+ if (s[0] == '#')
+ c = UINT32_C(0x1F030);
+ else
+ c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[2] - '0');
+ if (vertical)
+ c += UINT32_C(0x1F062) - UINT32_C(0x1F030);
+ *cp = c;
+ }
+ *n += 3u;
+ *ncp = 1u;
+ return LIBCHARCONV_CONVERTED;
+}
diff --git a/libcharconv_latin.c b/libcharconv_latin.c
index 60a2fb5..77ab4c9 100644
--- a/libcharconv_latin.c
+++ b/libcharconv_latin.c
@@ -327,6 +327,19 @@ libcharconv_latin(const char *s, size_t slen, size_t *n, uint_least32_t *cp, siz
c = (uint_least32_t)"aebBgdiwzDjkqlmnMNupKrstTAEhx"[c - UINT32_C(0x10280)];
goto conv;
+ } else if (UINT32_C(0x1F031) <= c && c <= UINT32_C(0x1F061)) {
+ /* domino tiles */
+ c1 = (char)(((uint_least32_t)c - UINT32_C(0x1F031)) / 7u + (unsigned)'0');
+ c3 = (char)(((uint_least32_t)c - UINT32_C(0x1F031)) % 7u + (unsigned)'0');
+ c2 = '|';
+ goto conv3;
+ } else if (UINT32_C(0x1F063) <= c && c <= UINT32_C(0x1F093)) {
+ /* domino tiles */
+ c1 = (char)(((uint_least32_t)c - UINT32_C(0x1F063)) / 7u + (unsigned)'0');
+ c3 = (char)(((uint_least32_t)c - UINT32_C(0x1F063)) % 7u + (unsigned)'0');
+ c2 = '-';
+ goto conv3;
+
} else {
switch (c) {
/* shogi */
@@ -459,6 +472,10 @@ libcharconv_latin(const char *s, size_t slen, size_t *n, uint_least32_t *cp, siz
/* lydian */
case UINT32_C(0x1093F): c = (uint_least32_t)'"'; goto conv;
+ /* domino tiles */
+ case UINT32_C(0x1F030): c1 = '#'; c2 = '|'; c3 = '#'; goto conv3;
+ case UINT32_C(0x1F062): c1 = '#'; c2 = '-'; c3 = '#'; goto conv3;
+
default:
no_match:
*n += clen;
generated by cgit v1.2.3-70-g09d2 (git 2.51.0) at 2026-02-20 21:51:25 +0000