/*
-This file is part of the visor text editor and text editor framework
+visor - lightweight system-independent text editor and framework
Copyright (C) 2019 John Tsiombikas <nuclear@member.fsf.org>
This program is free software: you can redistribute it and/or modify
struct vi_buffer;
struct vi_span {
- vi_addr beg;
+ vi_addr start;
unsigned long size;
+ int src;
};
enum vi_motdir {
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);
+ vi_file *(*open)(const char *path, unsigned int flags);
long (*size)(vi_file *file);
void (*close)(vi_file *file);
void *(*map)(vi_file *file);
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);
+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);