/* sed.h -- types and constants for the stream editor
   Copyright (C) 1995-2003 Eric S. Raymond
   Copyright (C) 2004-2005 Rene Rebe
   Copyright (C) 2020-2021 Edoardo Mantovani
*/

#include <base/log.h>
#include <stdlib.h>		/* exit */
#include <stdio.h>		/* uses getc, fprintf, fopen, fclose */
#include <ctype.h>		/* isdigit */
#include <string.h>		/* strcmp */

#define TRUE            1
#define FALSE           0

/* data area sizes used by both modules */
#define MAXBUF		8000	/* current line buffer size */
#define MAXAPPENDS	25	/* maximum number of appends */
#define MAXTAGS		9	/* tagged patterns are \1 to \9 */
#define MAXCMDS		400	/* maximum number of compiled commands */
#define MAXLINES	512 /* max # numeric addresses to compile */ 

/* constants for compiled-command representation */
#define EQCMD	0x01	/* = -- print current line number		*/
#define ACMD	0x02	/* a -- append text after current line 	*/
#define BCMD	0x03	/* b -- branch to label				*/
#define CCMD	0x04	/* c -- change current line 		*/
#define DCMD	0x05	/* d -- delete all of pattern space		*/
#define CDCMD	0x06	/* D -- delete first line of pattern space	*/
#define GCMD	0x07	/* g -- copy hold space to pattern space	*/
#define CGCMD	0x08	/* G -- append hold space to pattern space	*/
#define HCMD	0x09	/* h -- copy pattern space to hold space	*/
#define CHCMD	0x0A	/* H -- append hold space to pattern space	*/
#define ICMD	0x0B	/* i -- insert text before current line 	*/
#define LCMD	0x0C	/* l -- print pattern space in escaped form	*/
#define CLCMD   0x20	/* L -- hexdump					*/
#define NCMD	0x0D	/* n -- get next line into pattern space	*/
#define CNCMD	0x0E	/* N -- append next line to pattern space	*/
#define PCMD	0x0F	/* p -- print pattern space to output		*/
#define CPCMD	0x10	/* P -- print first line of pattern space	*/
#define QCMD	0x11	/* q -- exit the stream editor			*/
#define RCMD	0x12	/* r -- read in a file after current line */
#define SCMD	0x13	/* s -- regular-expression substitute		*/
#define TCMD	0x14	/* t -- branch on last substitute successful	*/
#define CTCMD	0x15	/* T -- branch on last substitute failed	*/
#define WCMD	0x16	/* w -- write pattern space to file		*/
#define CWCMD	0x17	/* W -- write first line of pattern space	*/
#define XCMD	0x18	/* x -- exhange pattern and hold spaces		*/
#define YCMD	0x19	/* y -- transliterate text			*/

typedef struct	cmd_t			/* compiled-command representation */
{
	char	*addr1;			/* first address for command */
	char	*addr2;			/* second address for command */
	union
	{
		char		*lhs;	/* s command lhs */
		struct cmd_t	*link;	/* label link */
	} u;
	char	command;		/* command code */
	char	*rhs;			/* s command replacement string */
	FILE	*fout;	 		/* associated output file descriptor */
	struct
	{
		unsigned allbut  : 1;	/* was negation specified? */
		unsigned global  : 1;	/* was p postfix specified? */
		unsigned print   : 2;	/* was g postfix specified? */
		unsigned inrange : 1;	/* in an address range? */
	} flags;
	unsigned nth;			/* sed nth occurance */
}
sedcmd;		/* use this name for declarations */

#define BAD	((char *) -1)		/* guaranteed not a string ptr */

/* address and regular expression compiled-form markers */
#define STAR	1	/* marker for Kleene star */
#define CCHR	2	/* non-newline character to be matched follows */
#define CDOT	4	/* dot wild-card marker */
#define CCL	6	/* character class follows */
#define CNL	8	/* match line start */
#define CDOL	10	/* match line end */
#define CBRA	12	/* tagged pattern start marker */
#define CKET	14	/* tagged pattern end marker */
#define CBACK	16	/* backslash-digit pair marker */
#define CLNUM	18	/* numeric-address index follows */
#define CEND	20	/* symbol for end-of-source */
#define CEOF	22	/* end-of-field mark */

#define bits(b) (1 << (b))

/* sed.h ends here */