/*-
* Copyright (c) 1992 Diomidis Spinellis.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Diomidis Spinellis of Imperial College, University of London.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)defs.h 8.1 (Berkeley) 6/6/93
* $FreeBSD$
*/
/*
* Types of address specifications
*/
enum e_atype {
AT_RE, /* Line that match RE */
AT_LINE, /* Specific line */
AT_LAST, /* Last line */
};
/*
* Format of an address
*/
struct s_addr {
enum e_atype type; /* Address type */
union {
u_long l; /* Line number */
regex_t *r; /* Regular expression */
} u;
};
/*
* Substitution command
*/
struct s_subst {
int n; /* Occurrence to subst. */
int p; /* True if p flag */
char *wfile; /* NULL if no wfile */
int wfd; /* Cached file descriptor */
regex_t *re; /* Regular expression */
int maxbref; /* Largest backreference. */
u_long linenum; /* Line number. */
char *new; /* Replacement text */
};
/*
* Translate command.
*/
struct s_tr {
unsigned char bytetab[256];
struct trmulti {
int fromlen;
char from[MB_LEN_MAX];
int tolen;
char to[MB_LEN_MAX];
} *multis;
int nmultis;
};
/*
* An internally compiled command.
* Initialy, label references are stored in t, on a second pass they
* are updated to pointers.
*/
struct s_command {
struct s_command *next; /* Pointer to next command */
struct s_addr *a1, *a2; /* Start and end address */
char *t; /* Text for : a c i r w */
union {
struct s_command *c; /* Command(s) for b t { */
struct s_subst *s; /* Substitute command */
struct s_tr *y; /* Replace command array */
int fd; /* File descriptor for w */
} u;
char code; /* Command code */
u_int nonsel:1; /* True if ! */
u_int inrange:1; /* True if in range */
};
/*
* Types of command arguments recognised by the parser
*/
enum e_args {
EMPTY, /* d D g G h H l n N p P q x = \0 */
TEXT, /* a c i */
NONSEL, /* ! */
GROUP, /* { */
ENDGROUP, /* } */
COMMENT, /* # */
BRANCH, /* b t */
LABEL, /* : */
RFILE, /* r */
WFILE, /* w */
SUBST, /* s */
TR /* y */
};
/*
* Structure containing things to append before a line is read
*/
struct s_appends {
enum {AP_STRING, AP_FILE} type;
char *s;
size_t len;
};
enum e_spflag {
APPEND, /* Append to the contents. */
REPLACE, /* Replace the contents. */
};
/*
* Structure for a space (process, hold, otherwise).
*/
typedef struct {
char *space; /* Current space pointer. */
size_t len; /* Current length. */
int deleted; /* If deleted. */
char *back; /* Backing memory. */
size_t blen; /* Backing memory length. */
} SPACE;
