264 lines
7.5 KiB
C
264 lines
7.5 KiB
C
/* ed.h: type and constant definitions for the ed editor. */
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/*
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* Copyright (c) 1993 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Andrew Moore, Talke Studio.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ed.h 5.5 (Berkeley) 3/28/93
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*/
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#include <unistd.h>
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#include <errno.h>
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#if defined(BSD) && BSD >= 199103 || defined(__386BSD__)
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# include <sys/param.h> /* for MAXPATHLEN */
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#endif
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#include <regex.h>
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#include <signal.h>
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#define BITSPERBYTE 8
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#define BITS(type) (BITSPERBYTE * (int)sizeof(type))
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#define CHARBITS BITS(char)
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#define INTBITS BITS(int)
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#define INTHIBIT (1 << (INTBITS - 1))
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#define ERR (-2)
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#define EMOD (-3)
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#define FATAL (-4)
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#ifndef MAXPATHLEN
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# define MAXPATHLEN 255 /* _POSIX_PATH_MAX */
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#endif
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#define MAXFNAME MAXPATHLEN /* max file name size */
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#define MINBUFSZ 512 /* minimum buffer size - must be > 0 */
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#define LINECHARS (INTHIBIT - 1) /* max chars per line */
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#define SE_MAX 30 /* max subexpressions in a regular expression */
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typedef regex_t pattern_t;
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/* Line node */
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typedef struct line {
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struct line *next;
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struct line *prev;
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off_t seek; /* address of line in scratch buffer */
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#define ACTV INTHIBIT /* active bit: high bit of len */
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int len; /* length of line */
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} line_t;
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typedef struct undo {
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/* type of undo nodes */
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#define UADD 0
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#define UDEL 1
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#define UMOV 2
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#define VMOV 3
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int type; /* command type */
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line_t *h; /* head of list */
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line_t *t; /* tail of list */
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} undo_t;
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#ifndef max
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# define max(a,b) ((a) > (b) ? (a) : (b))
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#endif
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#ifndef min
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# define min(a,b) ((a) < (b) ? (a) : (b))
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#endif
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/* nextln: return line after l mod k */
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#define nextln(l,k) ((l)+1 > (k) ? 0 : (l)+1)
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/* nextln: return line before l mod k */
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#define prevln(l,k) ((l)-1 < 0 ? (k) : (l)-1)
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#define skipblanks() while (isspace(*ibufp) && *ibufp != '\n') ibufp++
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/* spl1: disable some interrupts (requires reliable signals) */
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#define spl1() mutex++
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/* spl0: enable all interrupts; check sigflags (requires reliable signals) */
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#define spl0() \
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if (--mutex == 0) { \
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if (sigflags & (1 << SIGHUP)) dohup(SIGHUP); \
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if (sigflags & (1 << SIGINT)) dointr(SIGINT); \
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}
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#if defined(sun) || defined(NO_REALLOC_NULL)
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/* CKBUF: assure at least a minimum size for buffer b */
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#define CKBUF(b,n,i,err) \
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if ((i) > (n)) { \
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int ti = (n); \
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char *ts; \
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spl1(); \
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if ((b) != NULL) { \
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if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
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fprintf(stderr, "%s\n", strerror(errno)); \
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sprintf(errmsg, "out of memory"); \
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spl0(); \
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return err; \
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} \
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} else { \
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if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \
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fprintf(stderr, "%s\n", strerror(errno)); \
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sprintf(errmsg, "out of memory"); \
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spl0(); \
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return err; \
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} \
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} \
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(n) = ti; \
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(b) = ts; \
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spl0(); \
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}
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#else /* NO_REALLOC_NULL */
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/* CKBUF: assure at least a minimum size for buffer b */
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#define CKBUF(b,n,i,err) \
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if ((i) > (n)) { \
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int ti = (n); \
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char *ts; \
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spl1(); \
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if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
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fprintf(stderr, "%s\n", strerror(errno)); \
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sprintf(errmsg, "out of memory"); \
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spl0(); \
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return err; \
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} \
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(n) = ti; \
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(b) = ts; \
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spl0(); \
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}
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#endif /* NO_REALLOC_NULL */
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/* requeue: link pred before succ */
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#define requeue(pred, succ) (pred)->next = (succ), (succ)->prev = (pred)
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/* insqueue: insert elem in circular queue after pred */
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#define insqueue(elem, pred) \
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{ \
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requeue((elem), (pred)->next); \
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requeue((pred), elem); \
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}
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/* remqueue: remove elem from circular queue */
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#define remqueue(elem) requeue((elem)->prev, (elem)->next);
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/* nultonl: overwrite ASCII NULs with newlines */
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#define nultonl(s, l) translit(s, l, '\0', '\n')
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/* nltonul: overwrite newlines with ASCII NULs */
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#define nltonul(s, l) translit(s, l, '\n', '\0')
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#ifndef strerror
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# define strerror(n) sys_errlist[n]
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#endif
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#ifndef __P
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# ifndef __STDC__
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# define __P(proto) ()
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# else
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# define __P(proto) proto
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# endif
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#endif
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/* local function declarations */
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int append __P((long, int));
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int cbcdec __P((char *, FILE *));
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int cbcenc __P((char *, int, FILE *));
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char *ckfn __P((char *));
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int ckglob __P((void));
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int ckrange __P((long, long));
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int desflush __P((FILE *));
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int desgetc __P((FILE *));
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void desinit __P((void));
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int desputc __P((int, FILE *));
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int docmd __P((int));
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void err __P((char *));
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char *ccl __P((char *));
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void cvtkey __P((char *, char *));
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long doglob __P((int));
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void dohup __P((int));
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void dointr __P((int));
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void dowinch __P((int));
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int doprint __P((long, long, int));
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long doread __P((long, char *));
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long dowrite __P((long, long, char *, char *));
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char *esctos __P((char *));
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long patscan __P((pattern_t *, int));
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long getaddr __P((line_t *));
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char *getcmdv __P((int *, int));
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char *getfn __P((void));
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int getkey __P((void));
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char *getlhs __P((int));
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int getline __P((void));
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int getlist __P((void));
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long getnum __P((int));
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long getone __P((void));
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line_t *getlp __P((long));
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int getrhs __P((int));
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int getshcmd __P((void));
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char *gettxt __P((line_t *));
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void init_buf __P((void));
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int join __P((long, long));
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int lndelete __P((long, long));
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line_t *lpdup __P((line_t *));
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void lpqueue __P((line_t *));
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void makekey __P((char *));
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char *makesub __P((int));
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char *translit __P((char *, int, int, int));
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int move __P((long, int));
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int oddesc __P((char *, char *));
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void onhup __P((int));
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void onintr __P((int));
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pattern_t *optpat __P((void));
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void putstr __P((char *, int, long, int));
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char *puttxt __P((char *));
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void quit __P((int));
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int regsub __P((pattern_t *, line_t *, int));
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int sbclose __P((void));
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int sbopen __P((void));
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int sgetline __P((FILE *));
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int catsub __P((char *, regmatch_t *, int));
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int subst __P((pattern_t *, int));
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int tobinhex __P((int, int));
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int transfer __P((long));
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int undo __P((int));
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undo_t *upush __P((int, long, long));
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void ureset __P((void));
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extern char *sys_errlist[];
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extern int mutex;
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extern int sigflags;
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