keyword: Added `keyword` type

This will allow for easy parsing of stuff like the PR `info`, PR
`comments`, and config files.

1 files changed, 41 insertions, 0 deletions

diff --git a/keyword.h b/keyword.h
new file mode 100644
index 0000000..b4f4fa2
--- /dev/null
+++ b/keyword.h
@@ -0,0 +1,41 @@
+#ifndef KEYWORD_H
+#define KEYWORD_H
+#include <stddef.h>
+#include <time.h>
+
+typedef enum keyword_type keyword_type;
+typedef struct keyword keyword;
+typedef union keyword_val keyword_val;
+typedef void (keyword_cb)(void *ctx, void *ret, const keyword *key, keyword_val val);
+
+enum keyword_type {
+	TYPE_NONE,
+	TYPE_INT,
+	TYPE_STRING,
+	TYPE_FLOAT,
+	TYPE_BOOL,
+	TYPE_TIME,
+	TYPE_COUNT,
+};
+
+struct keyword {
+	const char *key;	/* Keyword. */
+	const char *desc;	/* Description of the keyword. */
+	const char *time_fmt;	/* Format string used to parse a timestamp (if needed). */
+	keyword_type type;	/* Datatype of the keyword. */
+	size_t *offsets;	/* Offset(s) of member(s) in a struct (if needed). */
+	keyword_cb *callback;	/* Callback to keyword specific parsing function (if needed). */
+};
+
+union keyword_val {
+	int i;		/* Integer. */
+	time_t t;	/* Time. */
+	char *str;	/* String. */
+	float f;	/* Float. */
+};
+
+extern keyword_val get_keyword_value(const keyword *key, char *value, int *error);
+extern void set_keyword(const keyword *key, keyword_val val, void *ret, void *ctx);
+extern keyword_val parse_keyword(const keyword *key, char *key_str, char *value, int *error);
+extern int parse_keywords(const keyword **keys, char *key, char *value, void *ret, void *ctx);
+#endif