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57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
#ifndef LINE_H_
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#define LINE_H_
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#include "retcode.h"
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#include "utf8.h"
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#define NLINE 256 /* # of bytes, input line */
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/*
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* All text is kept in circularly linked lists of "struct line" structures. These
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* begin at the header line (which is the blank line beyond the end of the
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* buffer). This line is pointed to by the "struct buffer". Each line contains a the
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* number of bytes in the line (the "used" size), the size of the text array,
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* and the text. The end of line is not stored as a byte; it's implied. Future
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* additions will include update hints, and a list of marks into the line.
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*/
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struct line {
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struct line *l_fp; /* Link to the next line */
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struct line *l_bp; /* Link to the previous line */
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int l_size; /* Allocated size */
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int l_used; /* Used size */
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char l_text[1]; /* A bunch of characters. */
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};
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#define lforw(lp) ((lp)->l_fp)
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#define lback(lp) ((lp)->l_bp)
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#define lgetc(lp, n) ((lp)->l_text[(n)]&0xFF)
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#define lputc(lp, n, c) ((lp)->l_text[(n)]=(c))
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#define llength(lp) ((lp)->l_used)
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extern int tabmask ;
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char *getkill( void) ;
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int backchar( int f, int n) ;
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int forwchar( int f, int n) ;
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void lfree( struct line *lp) ;
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void lchange( int flag) ;
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int insspace( int f, int n) ;
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int linstr( char *instr) ;
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int linsert( int n, unicode_t c) ;
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int lover( char *ostr) ;
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int lnewline( void) ;
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int ldelete( long n, int kflag) ;
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int ldelchar( long n, int kflag) ;
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int lgetchar( unicode_t *) ;
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char *getctext( void) ;
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void kdelete( void) ;
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int kinsert( int c) ;
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int yank( int f, int n) ;
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struct line *lalloc( int) ; /* Allocate a line. */
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boolean rdonly( void) ; /* Read Only error message */
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#endif /* LINE_H_ */
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