Annotation of src/usr.bin/sed/defs.h, Revision 1.2
1.2 ! deraadt 1: /* * $OpenBSD: defs.h,v 1.1.1.1 1995/10/18 08:46:05 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.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
38: * from: @(#)defs.h 8.1 (Berkeley) 6/6/93
39: */
40:
41: /*
42: * Types of address specifications
43: */
44: enum e_atype {
45: AT_RE, /* Line that match RE */
46: AT_LINE, /* Specific line */
47: AT_LAST, /* Last line */
48: };
49:
50: /*
51: * Format of an address
52: */
53: struct s_addr {
54: enum e_atype type; /* Address type */
55: union {
56: u_long l; /* Line number */
57: regex_t *r; /* Regular expression */
58: } u;
59: };
60:
61: /*
62: * Substitution command
63: */
64: struct s_subst {
65: int n; /* Occurrence to subst. */
66: int p; /* True if p flag */
67: char *wfile; /* NULL if no wfile */
68: int wfd; /* Cached file descriptor */
69: regex_t *re; /* Regular expression */
70: int maxbref; /* Largest backreference. */
71: u_long linenum; /* Line number. */
72: char *new; /* Replacement text */
73: };
74:
75:
76: /*
77: * An internally compiled command.
78: * Initialy, label references are stored in t, on a second pass they
79: * are updated to pointers.
80: */
81: struct s_command {
82: struct s_command *next; /* Pointer to next command */
83: struct s_addr *a1, *a2; /* Start and end address */
84: char *t; /* Text for : a c i r w */
85: union {
86: struct s_command *c; /* Command(s) for b t { */
87: struct s_subst *s; /* Substitute command */
88: u_char *y; /* Replace command array */
89: int fd; /* File descriptor for w */
90: } u;
91: char code; /* Command code */
92: u_int nonsel:1; /* True if ! */
93: u_int inrange:1; /* True if in range */
94: };
95:
96: /*
97: * Types of command arguments recognised by the parser
98: */
99: enum e_args {
100: EMPTY, /* d D g G h H l n N p P q x = \0 */
101: TEXT, /* a c i */
102: NONSEL, /* ! */
103: GROUP, /* { */
104: ENDGROUP, /* } */
105: COMMENT, /* # */
106: BRANCH, /* b t */
107: LABEL, /* : */
108: RFILE, /* r */
109: WFILE, /* w */
110: SUBST, /* s */
111: TR /* y */
112: };
113:
114: /*
115: * Structure containing things to append before a line is read
116: */
117: struct s_appends {
118: enum {AP_STRING, AP_FILE} type;
119: char *s;
120: size_t len;
121: };
122:
123: enum e_spflag {
124: APPEND, /* Append to the contents. */
125: REPLACE, /* Replace the contents. */
126: };
127:
128: /*
129: * Structure for a space (process, hold, otherwise).
130: */
131: typedef struct {
132: char *space; /* Current space pointer. */
133: size_t len; /* Current length. */
134: int deleted; /* If deleted. */
135: char *back; /* Backing memory. */
136: size_t blen; /* Backing memory length. */
137: } SPACE;
138:
139: /*
140: * Error severity codes:
141: */
142: #define FATAL 0 /* Exit immediately with 1 */
143: #define ERROR 1 /* Continue, but change exit value */
144: #define WARNING 2 /* Just print the warning */
145: #define COMPILE 3 /* Print error, count and finish script */
146: #define COMPILE2 3 /* Print error, count and finish script */
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