Annotation of src/usr.bin/sed/defs.h, Revision 1.3
1.3 ! millert 1: /* * $OpenBSD: defs.h,v 1.2 1996/06/26 05:39:05 deraadt Exp $*/
1.1 deraadt 2: /*-
3: * Copyright (c) 1992 Diomidis Spinellis.
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.
1.3 ! millert 18: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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: */
36:
37: /*
38: * Types of address specifications
39: */
40: enum e_atype {
41: AT_RE, /* Line that match RE */
42: AT_LINE, /* Specific line */
43: AT_LAST, /* Last line */
44: };
45:
46: /*
47: * Format of an address
48: */
49: struct s_addr {
50: enum e_atype type; /* Address type */
51: union {
52: u_long l; /* Line number */
53: regex_t *r; /* Regular expression */
54: } u;
55: };
56:
57: /*
58: * Substitution command
59: */
60: struct s_subst {
61: int n; /* Occurrence to subst. */
62: int p; /* True if p flag */
63: char *wfile; /* NULL if no wfile */
64: int wfd; /* Cached file descriptor */
65: regex_t *re; /* Regular expression */
66: int maxbref; /* Largest backreference. */
67: u_long linenum; /* Line number. */
68: char *new; /* Replacement text */
69: };
70:
71:
72: /*
73: * An internally compiled command.
74: * Initialy, label references are stored in t, on a second pass they
75: * are updated to pointers.
76: */
77: struct s_command {
78: struct s_command *next; /* Pointer to next command */
79: struct s_addr *a1, *a2; /* Start and end address */
80: char *t; /* Text for : a c i r w */
81: union {
82: struct s_command *c; /* Command(s) for b t { */
83: struct s_subst *s; /* Substitute command */
84: u_char *y; /* Replace command array */
85: int fd; /* File descriptor for w */
86: } u;
87: char code; /* Command code */
88: u_int nonsel:1; /* True if ! */
89: u_int inrange:1; /* True if in range */
90: };
91:
92: /*
93: * Types of command arguments recognised by the parser
94: */
95: enum e_args {
96: EMPTY, /* d D g G h H l n N p P q x = \0 */
97: TEXT, /* a c i */
98: NONSEL, /* ! */
99: GROUP, /* { */
100: ENDGROUP, /* } */
101: COMMENT, /* # */
102: BRANCH, /* b t */
103: LABEL, /* : */
104: RFILE, /* r */
105: WFILE, /* w */
106: SUBST, /* s */
107: TR /* y */
108: };
109:
110: /*
111: * Structure containing things to append before a line is read
112: */
113: struct s_appends {
114: enum {AP_STRING, AP_FILE} type;
115: char *s;
116: size_t len;
117: };
118:
119: enum e_spflag {
120: APPEND, /* Append to the contents. */
121: REPLACE, /* Replace the contents. */
122: };
123:
124: /*
125: * Structure for a space (process, hold, otherwise).
126: */
127: typedef struct {
128: char *space; /* Current space pointer. */
129: size_t len; /* Current length. */
130: int deleted; /* If deleted. */
131: char *back; /* Backing memory. */
132: size_t blen; /* Backing memory length. */
133: } SPACE;
134:
135: /*
136: * Error severity codes:
137: */
138: #define FATAL 0 /* Exit immediately with 1 */
139: #define ERROR 1 /* Continue, but change exit value */
140: #define WARNING 2 /* Just print the warning */
141: #define COMPILE 3 /* Print error, count and finish script */
142: #define COMPILE2 3 /* Print error, count and finish script */
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