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authorMattias Andrée <m@maandree.se>2026-01-25 23:08:40 +0100
committerMattias Andrée <m@maandree.se>2026-01-25 23:08:40 +0100
commitd0caefee7e2a45aebf14a6911021c7af9aed2a9f (patch)
tree72c074eebb678316d6e636767ab29494ef102b30 /libcharconv_chess_neutral.c
parentAdd control character representations (diff)
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Add chess
Signed-off-by: Mattias Andrée <m@maandree.se>
Diffstat (limited to 'libcharconv_chess_neutral.c')
-rw-r--r--libcharconv_chess_neutral.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/libcharconv_chess_neutral.c b/libcharconv_chess_neutral.c
new file mode 100644
index 0000000..04f548d
--- /dev/null
+++ b/libcharconv_chess_neutral.c
@@ -0,0 +1,35 @@
+/* See LICENSE file for copyright and license details. */
+#include "lib-common.h"
+
+
+enum libcharconv_result
+libcharconv_chess_neutral(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
+{
+ uint_least32_t c;
+ *n = 0;
+ for (; slen--; s++) {
+ switch (*s) {
+ case 'k': case 'K': c = UINT32_C(0x1FA00); goto conv;
+ case 'q': case 'Q': c = UINT32_C(0x1FA01); goto conv;
+ case 'r': case 'R': c = UINT32_C(0x1FA02); goto conv;
+ case 'b': case 'B': c = UINT32_C(0x1FA03); goto conv;
+ case 'n': case 'N': c = UINT32_C(0x1FA04); goto conv;
+ case 'p': case 'P': c = UINT32_C(0x1FA05); goto conv;
+ case 'e': case 'E': c = UINT32_C(0x1FA4A); goto conv;
+ default:
+ *n += 1u;
+ break;
+ }
+ }
+no_conv:
+ return LIBCHARCONV_NO_CONVERT;
+
+conv:
+ if (*n)
+ goto no_conv;
+ if (*ncp)
+ *cp = c;
+ *n += 1u;
+ *ncp = 1u;
+ return LIBCHARCONV_CONVERTED;
+}