void *(*realloc)(void*, unsigned long); /* can be null, will use malloc/free */
};
+/* open flags (same as POSIX O_*) */
+enum { VI_RDONLY, VI_WRONLY, VI_RDWR, VI_CREAT = 0x100 };
+/* seek origin (same as C SEEK_*) */
+enum { VI_SEEK_SET, VI_SEEK_CUR, VI_SEEK_END };
+
+
struct vi_fileops {
- vi_file *(*open)(const char *path);
- long (*size)(vi_file *file);
+ vi_file *(*open)(const char *path, unsigned int flags);
void (*close)(vi_file *file);
+ long (*size)(vi_file *file);
void *(*map)(vi_file *file);
void (*unmap)(vi_file *file);
long (*read)(vi_file *file, void *buf, long count);
void (*del_back)(void *cls);
void (*del_fwd)(void *cls);
void (*status)(char *s, void *cls);
+ void (*flush)(void *cls);
};
/* Create a new instance of the visor editor.
void vi_set_fileops(struct visor *vi, struct vi_fileops *fop);
void vi_set_ttyops(struct visor *vi, struct vi_ttyops *tty);
+void vi_term_size(struct visor *vi, int xsz, int ysz);
+void vi_redraw(struct visor *vi);
+
/* vi_new_buf creates a new buffer and inserts it in the buffer list. If the
* path pointer is null, the new buffer will be empty, otherwise it's as if it
* was followed by a vi_buf_read call to read a file into the buffer.
int vi_buf_write(struct vi_buffer *vb, const char *path);
long vi_buf_size(struct vi_buffer *vb);
-/* find the span which corresponds to the specified text position */
-struct vi_span *vi_buf_find_span(struct vi_buffer *vb, vi_addr at);
+/* find the span which corresponds to the specified text position
+ * if soffs is not null, the relative offset of the specified address from the
+ * start of the span is stored there.
+ */
+struct vi_span *vi_buf_find_span(struct vi_buffer *vb, vi_addr at, vi_addr *soffs);
+const char *vi_buf_span_text(struct vi_buffer *vb, struct vi_span *span);
void vi_buf_ins_begin(struct vi_buffer *vb, vi_motion mot);
void vi_buf_insert(struct vi_buffer *vb, char *s);
void vi_buf_del(struct vi_buffer *vb, vi_motion mot);
void vi_buf_yank(struct vi_buffer *vb, vi_motion mot);
+
+/* high level user input handling */
+void vi_keypress(struct visor *vi, int key);
+
#endif /* LIB_VISOR_TEXTED_CORE_H_ */