X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=visor;a=blobdiff_plain;f=libvisor%2Finclude%2Fvisor.h;h=58b6ac4c121b274b65bb1b8874f362c655f0b3e1;hp=55dcc48630639aefd5da934c9b0e0c86645978cb;hb=7357e1f153279a9d84d8671f02fa146575d4935e;hpb=a3d913263bd55389a60c8db96d1ea1fc11acf178

diff --git a/libvisor/include/visor.h b/libvisor/include/visor.h
index 55dcc48..58b6ac4 100644
--- a/libvisor/include/visor.h
+++ b/libvisor/include/visor.h
@@ -26,8 +26,9 @@ struct visor;
 struct vi_buffer;
 
 struct vi_span {
-	vi_addr beg;
+	vi_addr start;
 	unsigned long size;
+	int src;
 };
 
 enum vi_motdir {
@@ -68,10 +69,16 @@ struct vi_alloc {
 	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);
@@ -135,6 +142,13 @@ int vi_buf_read(struct vi_buffer *vb, const char *path);
 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
+ * 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_ins_end(struct vi_buffer *vb);