usr.bin/sed/defs.h

   1 /*      $NetBSD: defs.h,v 1.10 2010/02/19 16:35:27 tnn Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Diomidis Spinellis of Imperial College, University of London.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      from: @(#)defs.h        8.1 (Berkeley) 6/6/93
  35  *      $NetBSD: defs.h,v 1.10 2010/02/19 16:35:27 tnn Exp $
  36  */
  37
  38 /*-
  39  * Copyright (c) 1992 Diomidis Spinellis.
  40  *
  41  * This code is derived from software contributed to Berkeley by
  42  * Diomidis Spinellis of Imperial College, University of London.
  43  *
  44  * Redistribution and use in source and binary forms, with or without
  45  * modification, are permitted provided that the following conditions
  46  * are met:
  47  * 1. Redistributions of source code must retain the above copyright
  48  *    notice, this list of conditions and the following disclaimer.
  49  * 2. Redistributions in binary form must reproduce the above copyright
  50  *    notice, this list of conditions and the following disclaimer in the
  51  *    documentation and/or other materials provided with the distribution.
  52  * 3. All advertising materials mentioning features or use of this software
  53  *    must display the following acknowledgement:
  54  *      This product includes software developed by the University of
  55  *      California, Berkeley and its contributors.
  56  * 4. Neither the name of the University nor the names of its contributors
  57  *    may be used to endorse or promote products derived from this software
  58  *    without specific prior written permission.
  59  *
  60  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  61  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  62  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  63  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  64  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  65  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  66  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  67  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  68  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  69  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  70  * SUCH DAMAGE.
  71  *
  72  *      from: @(#)defs.h        8.1 (Berkeley) 6/6/93
  73  *      $NetBSD: defs.h,v 1.10 2010/02/19 16:35:27 tnn Exp $
  74  */
  75
  76 /*
  77  * Types of address specifications
  78  */
  79 enum e_atype {
  80         AT_RE,                                  /* Line that match RE */
  81         AT_LINE,                                /* Specific line */
  82         AT_LAST                                 /* Last line */
  83 };
  84
  85 /*
  86  * Format of an address
  87  */
  88 struct s_addr {
  89         enum e_atype type;                      /* Address type */
  90         union {
  91                 u_long l;                       /* Line number */
  92                 regex_t *r;                     /* Regular expression */
  93         } u;
  94 };
  95
  96 /*
  97  * Substitution command
  98  */
  99 struct s_subst {
 100         int n;                                  /* Occurrence to subst. */
 101         int p;                                  /* True if p flag */
 102         char *wfile;                            /* NULL if no wfile */
 103         int wfd;                                /* Cached file descriptor */
 104         regex_t *re;                            /* Regular expression */
 105         int maxbref;                            /* Largest backreference. */
 106         u_long linenum;                         /* Line number. */
 107         char *new;                              /* Replacement text */
 108 };
 109
 110
 111 /*
 112  * An internally compiled command.
 113  * Initialy, label references are stored in t, on a second pass they
 114  * are updated to pointers.
 115  */
 116 struct s_command {
 117         struct s_command *next;                 /* Pointer to next command */
 118         struct s_addr *a1, *a2;                 /* Start and end address */
 119         char *t;                                /* Text for : a c i r w */
 120         union {
 121                 struct s_command *c;            /* Command(s) for b t { */
 122                 struct s_subst *s;              /* Substitute command */
 123                 u_char *y;                      /* Replace command array */
 124                 int fd;                         /* File descriptor for w */
 125         } u;
 126         char code;                              /* Command code */
 127         u_int nonsel:1;                         /* True if ! */
 128         u_int inrange:1;                        /* True if in range */
 129 };
 130
 131 /*
 132  * Types of command arguments recognised by the parser
 133  */
 134 enum e_args {
 135         EMPTY,                  /* d D g G h H l n N p P q x = \0 */
 136         TEXT,                   /* a c i */
 137         NONSEL,                 /* ! */
 138         GROUP,                  /* { */
 139         ENDGROUP,               /* } */
 140         COMMENT,                /* # */
 141         BRANCH,                 /* b t */
 142         LABEL,                  /* : */
 143         RFILE,                  /* r */
 144         WFILE,                  /* w */
 145         SUBST,                  /* s */
 146         TR                      /* y */
 147 };
 148
 149 /*
 150  * Structure containing things to append before a line is read
 151  */
 152 struct s_appends {
 153         enum {AP_STRING, AP_FILE} type;
 154         char *s;
 155         size_t len;
 156 };
 157
 158 enum e_spflag {
 159         APPEND,                                 /* Append to the contents. */
 160         REPLACE                                 /* Replace the contents. */
 161 };
 162
 163 /*
 164  * Structure for a space (process, hold, otherwise).
 165  */
 166 typedef struct {
 167         char *space;            /* Current space pointer. */
 168         size_t len;             /* Current length. */
 169         int deleted;            /* If deleted. */
 170         char *back;             /* Backing memory. */
 171         size_t blen;            /* Backing memory length. */
 172 } SPACE;
 173
 174 /*
 175  * Error severity codes:
 176  */
 177 #define FATAL           0       /* Exit immediately with 1 */
 178 #define ERROR           1       /* Continue, but change exit value */
 179 #define WARNING         2       /* Just print the warning */
 180 #define COMPILE         3       /* Print error, count and finish script */
 181 #define COMPILE2        3       /* Print error, count and finish script */
 182
 183 /*
 184  * Round up to the nearest multiple of _POSIX2_LINE_MAX
 185  */
 186 #define ROUNDLEN(x) \
 187     (((x) + _POSIX2_LINE_MAX - 1) & ~(_POSIX2_LINE_MAX - 1))