initial import of the C runtime

1 files changed, 67 insertions, 0 deletions

diff --git a/src/runtime/c/gu/utf8.h b/src/runtime/c/gu/utf8.h
new file mode 100644
index 000000000..053d8664e
--- /dev/null
+++ b/src/runtime/c/gu/utf8.h
@@ -0,0 +1,67 @@
+#ifndef GU_UTF8_H_
+#define GU_UTF8_H_
+
+#include <gu/in.h>
+#include <gu/out.h>
+#include <gu/ucs.h>
+
+inline GuUCS
+gu_in_utf8(GuIn* in, GuExn* err)
+{
+	int i = gu_in_peek_u8(in);
+	if (i >= 0 && i < 0x80) {
+		gu_in_consume(in, 1);
+		return (GuUCS) i;
+	}
+	extern GuUCS gu_in_utf8_(GuIn* in, GuExn* err);
+	return gu_in_utf8_(in, err);
+}
+
+
+inline char
+gu_in_utf8_char(GuIn* in, GuExn* err)
+{
+#ifdef GU_CHAR_ASCII
+	int i = gu_in_peek_u8(in);
+	if (i >= 0 && i < 0x80) {
+		gu_in_consume(in, 1);
+		return (char) i;
+	}
+#endif
+	extern char gu_in_utf8_char_(GuIn* in, GuExn* err);
+	return gu_in_utf8_char_(in, err);
+}
+
+void
+gu_out_utf8_long_(GuUCS ucs, GuOut* out, GuExn* err);
+
+inline void
+gu_out_utf8(GuUCS ucs, GuOut* out, GuExn* err)
+{
+	gu_require(gu_ucs_valid(ucs));
+	if (GU_LIKELY(ucs < 0x80)) {
+		gu_out_u8(out, ucs, err);
+	} else {
+		gu_out_utf8_long_(ucs, out, err);
+	}
+}
+
+size_t
+gu_utf32_out_utf8(const GuUCS* src, size_t len, GuOut* out, GuExn* err);
+
+GuUCS
+gu_utf8_decode(const uint8_t** utf8);
+
+inline void 
+gu_str_out_utf8(const char* str, GuOut* out, GuExn* err)
+{
+#ifdef GU_CHAR_ASCII
+	gu_out_bytes(out, (const uint8_t*) str, strlen(str), err);
+#else
+	extern void 
+		gu_str_out_utf8_(const char* str, GuOut* out, GuExn* err);
+	gu_str_out_utf8_(str, out, err);
+#endif
+}
+
+#endif // GU_UTF8_H_