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uemacs/line.h

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C
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#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)
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char *getkill( void) ;
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int backchar( int f, int n) ;
int forwchar( int f, int n) ;
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void lfree( struct line *lp) ;
void lchange( int flag) ;
int insspace( int f, int n) ;
int linstr( char *instr) ;
int linsert( int n, int c) ;
int lover( char *ostr) ;
int lnewline( void) ;
int ldelete( long n, int kflag) ;
int ldelchar( long n, int kflag) ;
int lgetchar( unicode_t *) ;
char *getctext( void) ;
void kdelete( void) ;
int kinsert( int c) ;
int yank( int f, int n) ;
struct line *lalloc( int) ; /* Allocate a line. */
#endif /* LINE_H_ */