1 files changed, 72 insertions, 0 deletions
diff --git a/text.h b/text.h
new file mode 100644
index 0000000..cd69557
--- /dev/null
+++ b/text.h
@@ -0,0 +1,72 @@
+#include <stdbool.h>
+
+typedef struct Text Text;
+typedef struct Piece Piece;
+
+typedef struct {
+	const char const *start;  /* begin of piece's data */
+	const char const *end;    /* pointer to the first byte after valid data i.e. [start, end) */
+	const char const *text;   /* current position within piece: start <= text < end */
+	const Piece const *piece; /* internal state do not touch! */
+	size_t pos;               /* global position in bytes from start of file */
+} Iterator;
+
+#define text_iterate(ed, it, pos) \
+	for (Iterator it = text_iterator_get((ed), (pos)); \
+	     text_iterator_valid(&it); \
+	     text_iterator_next(&it))
+
+Text *text_load(const char *file);
+const char *text_filename(Text*);
+bool text_insert(Text*, size_t pos, const char *data);
+bool text_insert_raw(Text*, size_t pos, const char *data, size_t len);
+bool text_delete(Text*, size_t pos, size_t len);
+bool text_replace(Text*, size_t pos, const char *data);
+bool text_replace_raw(Text*, size_t pos, const char *data, size_t len);
+void text_snapshot(Text*);
+bool text_undo(Text*);
+bool text_redo(Text*);
+
+size_t text_pos_by_lineno(Text*, size_t lineno);
+size_t text_lineno_by_pos(Text*, size_t pos);
+
+size_t text_bytes_get(Text*, size_t pos, size_t len, char *buf);
+
+Iterator text_iterator_get(Text*, size_t pos);
+bool text_iterator_valid(const Iterator*);
+bool text_iterator_next(Iterator*);
+bool text_iterator_prev(Iterator*);
+
+bool text_iterator_byte_get(Iterator *it, char *b);
+bool text_iterator_byte_next(Iterator*, char *b);
+bool text_iterator_byte_prev(Iterator*, char *b);
+
+bool text_iterator_char_next(Iterator *it, char *c);
+bool text_iterator_char_prev(Iterator *it, char *c);
+
+typedef int Mark;
+void text_mark_set(Text*, Mark, size_t pos);
+size_t text_mark_get(Text*, Mark);
+void text_mark_clear(Text*, Mark);
+void text_mark_clear_all(Text*);
+
+size_t text_size(Text*);
+bool text_modified(Text*);
+int text_save(Text*, const char *file);
+void text_free(Text*);
+
+typedef struct Regex Regex;
+
+typedef struct {
+	size_t start; /* start of match in bytes from start of file or -1 if unused */
+	size_t end;   /* end of match in bytes from start of file or -1 if unused */
+} RegexMatch;
+
+Regex *text_regex_new(void);
+int text_regex_compile(Regex *r, const char *regex, int cflags);
+void text_regex_free(Regex *r);
+int text_search_forward(Text*, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags);
+int text_search_backward(Text*, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags);
+
+// TMP
+void text_debug(Text *ed);