137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
/*-
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* 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 */
|
|
};
|
|
|
|
|
|
/*
|
|
* 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 */
|
|
u_char *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;
|