pkstr: add

1 files changed, 84 insertions, 0 deletions

diff --git a/pkstr.h b/pkstr.h
new file mode 100644
index 0000000..fc53c49
--- /dev/null
+++ b/pkstr.h
@@ -0,0 +1,84 @@
+#ifndef PK_STR_H
+#define PK_STR_H
+
+#include <stdint.h>
+
+struct pk_str {
+	char *val;
+	uint32_t length;
+	uint32_t reserved;
+};
+struct pk_cstr {
+	const char *val;
+	uint32_t length;
+	uint32_t reserved;
+};
+
+struct pk_str cstring_to_pk_str(char *s);
+struct pk_cstr cstring_to_pk_cstr(const char *s);
+struct pk_str pk_cstr_to_pk_str(const struct pk_cstr *s);
+struct pk_cstr pk_str_to_pk_cstr(const struct pk_str *s);
+int pk_compare_str(const struct pk_str *lhs, const struct pk_str *rhs);
+int pk_compare_cstr(const struct pk_cstr *lhs, const struct pk_cstr *rhs);
+
+#endif /* PK_STR_H */
+
+#ifdef PK_IMPLEMENTATION
+
+#include "./pkmacros.h"
+
+#include <string.h>
+
+struct pk_str
+cstring_to_pk_str(char *s)
+{
+	return (struct pk_str) {
+		.val = s,
+		.length = (uint32_t)(strlen(s)),
+		.reserved = 0,
+	};
+}
+
+struct pk_cstr
+cstring_to_pk_cstr(const char *s)
+{
+	return (struct pk_cstr) {
+		.val = s,
+		.length = (uint32_t)(strlen(s)),
+		.reserved = 0,
+	};
+}
+
+struct pk_str
+pk_cstr_to_pk_str(const struct pk_cstr *s)
+{
+	return (struct pk_str) {
+		.val = (char *)(s->val),
+		.length = s->length,
+		.reserved = s->reserved,
+	};
+}
+
+struct pk_cstr
+pk_str_to_pk_cstr(const struct pk_str *s)
+{
+	return (struct pk_cstr) {
+		.val = (char *)(s->val),
+		.length = s->length,
+		.reserved = s->reserved,
+	};
+}
+
+int
+pk_compare_str(const struct pk_str *lhs, const struct pk_str *rhs)
+{
+	return strncmp(lhs->val, rhs->val, PK_MIN(lhs->length, rhs->length));
+}
+
+int
+pk_compare_cstr(const struct pk_cstr *lhs, const struct pk_cstr *rhs)
+{
+	return strncmp(lhs->val, rhs->val, PK_MIN(lhs->length, rhs->length));
+}
+
+#endif /* PK_IMPLEMENTATION */