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comparison toys/posix/sed.c @ 653:2986aa63a021

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Move commands into "posix", "lsb", and "other" menus/directories.
author Rob Landley <rob@landley.net>
date Sat, 25 Aug 2012 14:25:22 -0500
parents toys/sed.c@7cb15eae1664
children 6df4ccc0acbe
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652:2d7c56913fda 653:2986aa63a021
1 /* vi: set sw=4 ts=4:
2 *
3 * sed.c - Stream editor.
4 *
5 * Copyright 2008 Rob Landley <rob@landley.net>
6 *
7 * See http://www.opengroup.org/onlinepubs/009695399/utilities/sed.c
8
9 USE_SED(NEWTOY(sed, "irne*", TOYFLAG_BIN))
10
11 config SED
12 bool "sed"
13 default n
14 help
15 usage: sed [-irn] {command | [-e command]...} [FILE...]
16
17 Stream EDitor, transforms text by appling commands to each line
18 of input.
19 */
20
21 #include "toys.h"
22 #include "lib/xregcomp.h"
23
24 DEFINE_GLOBALS(
25 struct arg_list *commands;
26 )
27
28 #define TT this.sed
29
30 struct sed_command {
31 // Doubly linked list of commands.
32 struct sed_command *next, *prev;
33
34 // Regexes for s/match/data/ and /match_begin/,/match_end/command
35 regex_t *match, *match_begin, *match_end;
36
37 // For numeric ranges ala 10,20command
38 int first_line, last_line;
39
40 // Which match to replace, 0 for all.
41 int which;
42
43 // s and w commands can write to a file. Slight optimization: we use 0
44 // instead of -1 to mean no file here, because even when there's no stdin
45 // our input file would take fd 0.
46 int outfd;
47
48 // Data string for (saicytb)
49 char *data;
50
51 // Which command letter is this?
52 char command;
53 };
54
55 void sed_main(void)
56 {
57 struct arg_list *test;
58
59 for (test = TT.commands; test; test = test->next)
60 dprintf(2,"command=%s\n",test->arg);
61
62 printf("Hello world\n");
63 }