/bin/ed/ed.h
C Header | 273 lines | 201 code | 26 blank | 46 comment | 22 complexity | a10048cb4af1b40ca31abdc28ad0eec9 MD5 | raw file
- /* ed.h: type and constant definitions for the ed editor. */
- /*-
- * Copyright (c) 1993 Andrew Moore
- * All rights reserved.
- *
- * 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.
- *
- * 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.
- *
- * @(#)ed.h,v 1.5 1994/02/01 00:34:39 alm Exp
- * $FreeBSD$
- */
- #include <sys/param.h>
- #include <errno.h>
- #include <limits.h>
- #include <regex.h>
- #include <signal.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #define ERR (-2)
- #define EMOD (-3)
- #define FATAL (-4)
- #define MINBUFSZ 512 /* minimum buffer size - must be > 0 */
- #define SE_MAX 30 /* max subexpressions in a regular expression */
- #ifdef INT_MAX
- # define LINECHARS INT_MAX /* max chars per line */
- #else
- # define LINECHARS MAXINT /* max chars per line */
- #endif
- /* gflags */
- #define GLB 001 /* global command */
- #define GPR 002 /* print after command */
- #define GLS 004 /* list after command */
- #define GNP 010 /* enumerate after command */
- #define GSG 020 /* global substitute */
- typedef regex_t pattern_t;
- /* Line node */
- typedef struct line {
- struct line *q_forw;
- struct line *q_back;
- off_t seek; /* address of line in scratch buffer */
- int len; /* length of line */
- } line_t;
- typedef struct undo {
- /* type of undo nodes */
- #define UADD 0
- #define UDEL 1
- #define UMOV 2
- #define VMOV 3
- int type; /* command type */
- line_t *h; /* head of list */
- line_t *t; /* tail of list */
- } undo_t;
- #ifndef max
- # define max(a,b) ((a) > (b) ? (a) : (b))
- #endif
- #ifndef min
- # define min(a,b) ((a) < (b) ? (a) : (b))
- #endif
- #define INC_MOD(l, k) ((l) + 1 > (k) ? 0 : (l) + 1)
- #define DEC_MOD(l, k) ((l) - 1 < 0 ? (k) : (l) - 1)
- /* SPL1: disable some interrupts (requires reliable signals) */
- #define SPL1() mutex++
- /* SPL0: enable all interrupts; check sigflags (requires reliable signals) */
- #define SPL0() \
- if (--mutex == 0) { \
- if (sigflags & (1 << (SIGHUP - 1))) handle_hup(SIGHUP); \
- if (sigflags & (1 << (SIGINT - 1))) handle_int(SIGINT); \
- }
- /* STRTOL: convert a string to long */
- #define STRTOL(i, p) { \
- if (((i = strtol(p, &p, 10)) == LONG_MIN || i == LONG_MAX) && \
- errno == ERANGE) { \
- errmsg = "number out of range"; \
- i = 0; \
- return ERR; \
- } \
- }
- #if defined(sun) || defined(NO_REALLOC_NULL)
- /* REALLOC: assure at least a minimum size for buffer b */
- #define REALLOC(b,n,i,err) \
- if ((i) > (n)) { \
- size_t ti = (n); \
- char *ts; \
- SPL1(); \
- if ((b) != NULL) { \
- if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
- fprintf(stderr, "%s\n", strerror(errno)); \
- errmsg = "out of memory"; \
- SPL0(); \
- return err; \
- } \
- } else { \
- if ((ts = (char *) malloc(ti += max((i), MINBUFSZ))) == NULL) { \
- fprintf(stderr, "%s\n", strerror(errno)); \
- errmsg = "out of memory"; \
- SPL0(); \
- return err; \
- } \
- } \
- (n) = ti; \
- (b) = ts; \
- SPL0(); \
- }
- #else /* NO_REALLOC_NULL */
- /* REALLOC: assure at least a minimum size for buffer b */
- #define REALLOC(b,n,i,err) \
- if ((i) > (n)) { \
- size_t ti = (n); \
- char *ts; \
- SPL1(); \
- if ((ts = (char *) realloc((b), ti += max((i), MINBUFSZ))) == NULL) { \
- fprintf(stderr, "%s\n", strerror(errno)); \
- errmsg = "out of memory"; \
- SPL0(); \
- return err; \
- } \
- (n) = ti; \
- (b) = ts; \
- SPL0(); \
- }
- #endif /* NO_REALLOC_NULL */
- /* REQUE: link pred before succ */
- #define REQUE(pred, succ) (pred)->q_forw = (succ), (succ)->q_back = (pred)
- /* INSQUE: insert elem in circular queue after pred */
- #define INSQUE(elem, pred) \
- { \
- REQUE((elem), (pred)->q_forw); \
- REQUE((pred), elem); \
- }
- /* REMQUE: remove_lines elem from circular queue */
- #define REMQUE(elem) REQUE((elem)->q_back, (elem)->q_forw);
- /* NUL_TO_NEWLINE: overwrite ASCII NULs with newlines */
- #define NUL_TO_NEWLINE(s, l) translit_text(s, l, '\0', '\n')
- /* NEWLINE_TO_NUL: overwrite newlines with ASCII NULs */
- #define NEWLINE_TO_NUL(s, l) translit_text(s, l, '\n', '\0')
- /* Local Function Declarations */
- void add_line_node(line_t *);
- int append_lines(long);
- int apply_subst_template(const char *, regmatch_t *, int, int);
- int build_active_list(int);
- int cbc_decode(unsigned char *, FILE *);
- int cbc_encode(unsigned char *, int, FILE *);
- int check_addr_range(long, long);
- void clear_active_list(void);
- void clear_undo_stack(void);
- int close_sbuf(void);
- int copy_lines(long);
- int delete_lines(long, long);
- int display_lines(long, long, int);
- line_t *dup_line_node(line_t *);
- int exec_command(void);
- long exec_global(int, int);
- int extract_addr_range(void);
- char *extract_pattern(int);
- int extract_subst_tail(int *, long *);
- char *extract_subst_template(void);
- int filter_lines(long, long, char *);
- line_t *get_addressed_line_node(long);
- pattern_t *get_compiled_pattern(void);
- char *get_extended_line(int *, int);
- char *get_filename(void);
- int get_keyword(void);
- long get_line_node_addr(line_t *);
- long get_matching_node_addr(pattern_t *, int);
- long get_marked_node_addr(int);
- char *get_sbuf_line(line_t *);
- int get_shell_command(void);
- int get_stream_line(FILE *);
- int get_tty_line(void);
- void handle_hup(int);
- void handle_int(int);
- void handle_winch(int);
- int has_trailing_escape(char *, char *);
- int hex_to_binary(int, int);
- void init_buffers(void);
- int is_legal_filename(char *);
- int join_lines(long, long);
- int mark_line_node(line_t *, int);
- int move_lines(long);
- line_t *next_active_node(void);
- long next_addr(void);
- int open_sbuf(void);
- char *parse_char_class(char *);
- int pop_undo_stack(void);
- undo_t *push_undo_stack(int, long, long);
- const char *put_sbuf_line(const char *);
- int put_stream_line(FILE *, const char *, int);
- int put_tty_line(const char *, int, long, int);
- void quit(int);
- long read_file(char *, long);
- long read_stream(FILE *, long);
- int search_and_replace(pattern_t *, int, int);
- int set_active_node(line_t *);
- void signal_hup(int);
- void signal_int(int);
- char *strip_escapes(char *);
- int substitute_matching_text(pattern_t *, line_t *, int, int);
- char *translit_text(char *, int, int, int);
- void unmark_line_node(line_t *);
- void unset_active_nodes(line_t *, line_t *);
- long write_file(char *, const char *, long, long);
- long write_stream(FILE *, long, long);
- /* global buffers */
- extern char stdinbuf[];
- extern char *ibuf;
- extern char *ibufp;
- extern int ibufsz;
- /* global flags */
- extern int isbinary;
- extern int isglobal;
- extern int modified;
- extern int mutex;
- extern int sigflags;
- /* global vars */
- extern long addr_last;
- extern long current_addr;
- extern const char *errmsg;
- extern long first_addr;
- extern int lineno;
- extern long second_addr;
- extern long u_addr_last;
- extern long u_current_addr;
- extern long rows;
- extern int cols;
- extern int newline_added;
- extern int scripted;
- extern int patlock;