Mercurial > hg > toybox
annotate toys/sed.c @ 233:d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
toys/*.c. Move relevant info into comment at the top of each toys/*.c. Also
convert more of Makefile into a thin wrapper around shell scripts that actually
do the work. (Makefile is only still there for the user interface.)
author | Rob Landley <rob@landley.net> |
---|---|
date | Sat, 19 Jan 2008 17:08:39 -0600 |
parents | 31dc682c18ad |
children | 163498bf547b |
rev | line source |
---|---|
233
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
1 /* vi: set sw=4 ts=4: |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
2 * |
231
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
3 * sed.c - Stream editor. |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
4 * |
233
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
5 * Copyright 2008 Rob Landley <rob@landley.net> |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
6 * |
231
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
7 * See http://www.opengroup.org/onlinepubs/009695399/utilities/sed.c |
233
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
8 |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
9 config SED |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
10 bool "sed" |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
11 default n |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
12 help |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
13 usage: sed [-irn] {command | [-e command]...} [FILE...] |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
14 |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
15 Stream EDitor, transforms text by appling commands to each line |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
16 of input. |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
17 */ |
231
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
18 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
19 #include "toys.h" |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
20 #include "lib/xregcomp.h" |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
21 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
22 struct sed_command { |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
23 // Doubly linked list of commands. |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
24 struct sed_command *next, *prev; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
25 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
26 // Regexes for s/match/data/ and /match_begin/,/match_end/command |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
27 regex_t *match, *match_begin, *match_end; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
28 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
29 // For numeric ranges ala 10,20command |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
30 int first_line, last_line; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
31 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
32 // Which match to replace, 0 for all. |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
33 int which; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
34 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
35 // s and w commands can write to a file. Slight optimization: we use 0 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
36 // instead of -1 to mean no file here, because even when there's no stdin |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
37 // our input file would take fd 0. |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
38 int outfd; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
39 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
40 // Data string for (saicytb) |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
41 char *data; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
42 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
43 // Which command letter is this? |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
44 char command; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
45 }; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
46 |
233
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
47 #define TT toy.sed |
d4176f3f3835
Zap toys/Config.in and instead create generated/Config.in from contents of
Rob Landley <rob@landley.net>
parents:
231
diff
changeset
|
48 |
231
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
49 void sed_main(void) |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
50 { |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
51 struct arg_list *test; |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
52 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
53 for (test = TT.commands; test; test = test->next) |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
54 dprintf(2,"command=%s\n",test->arg); |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
55 |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
56 printf("Hello world\n"); |
31dc682c18ad
Very early stub of sed, does nothing yet.
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
57 } |