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62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* line.h -- line centric interface */
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#ifndef _LINE_H_
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#define _LINE_H_
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#include "names.h"
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#include "utf8.h"
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/*
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* All text is kept in circularly linked lists of "struct line" structures.
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* These begin at the header line (which is the blank line beyond the end
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* of the buffer). This line is pointed to by the "struct buffer". Each
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* line contains a number of bytes in the line (the "used" size), the size
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* of the text array, and the text. The end of line is not stored as a
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* byte; it's implied. Future additions will include update hints, and a
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* list of marks into the line.
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*/
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typedef struct line {
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struct line *l_fp ; /* Forward link to the next line */
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struct line *l_bp ; /* Backward 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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} *line_p ;
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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 tabwidth ; /* Map to $tab, default to 8, can be set to [1, .. */
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char *getkill( void) ;
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/* Bindable functions */
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boolean backchar( int f, int n) ;
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boolean forwchar( int f, int n) ;
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BINDABLE( insspace) ;
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BINDABLE( yank) ;
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void lfree( line_p lp) ;
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void lchange( int flag) ;
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int linstr( char *instr) ;
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int linsert( int n, unicode_t c) ;
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boolean linsert_byte( int n, int c) ;
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int lover( char *ostr) ;
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int lnewline( void) ;
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boolean ldelete( long n, boolean kflag) ;
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boolean ldelchar( long n, boolean kflag) ;
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int lgetchar( unicode_t *cref) ;
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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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line_p lalloc( int minsize) ; /* Allocate a line of at least minsize chars. */
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boolean rdonly( void) ; /* Read Only error message */
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#endif /* _LINE_H_ */
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/* end of line.h */
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