blob: 7b07a3bd8b1bc70002eb97b57d638662af62a1e2 [file] [log] [blame]
#ifndef LINE_H_
#define LINE_H_
#include "utf8.h"
* All text is kept in circularly linked lists of "struct line" structures. These
* begin at the header line (which is the blank line beyond the end of the
* buffer). This line is pointed to by the "struct buffer". Each line contains a the
* number of bytes in the line (the "used" size), the size of the text array,
* and the text. The end of line is not stored as a byte; it's implied. Future
* additions will include update hints, and a list of marks into the line.
struct line {
struct line *l_fp; /* Link to the next line */
struct line *l_bp; /* Link to the previous line */
int l_size; /* Allocated size */
int l_used; /* Used size */
char l_text[1]; /* A bunch of characters. */
#define lforw(lp) ((lp)->l_fp)
#define lback(lp) ((lp)->l_bp)
#define lgetc(lp, n) ((lp)->l_text[(n)]&0xFF)
#define lputc(lp, n, c) ((lp)->l_text[(n)]=(c))
#define llength(lp) ((lp)->l_used)
extern void lfree(struct line *lp);
extern void lchange(int flag);
extern int insspace(int f, int n);
extern int linstr(char *instr);
extern int linsert(int n, int c);
extern int lowrite(int c);
extern int lover(char *ostr);
extern int lnewline(void);
extern int ldelete(long n, int kflag);
extern int ldelchar(long n, int kflag);
extern int lgetchar(unicode_t *);
extern char *getctext(void);
extern int putctext(char *iline);
extern int ldelnewline(void);
extern void kdelete(void);
extern int kinsert(int c);
extern int yank(int f, int n);
extern struct line *lalloc(int); /* Allocate a line. */
#endif /* LINE_H_ */