toybox: toys/catv.c annotate

annotate toys/catv.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	30a6db5a95c2
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: 194 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: 194 diff changeset	2 *
35 f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	3 * cat -v implementation for toybox
f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	4 *
194 30a6db5a95c2 Add comments about SUSv3 specs (or lack thereof). Rob Landley <rob@landley.net> parents: 187 diff changeset	5 * Copyright (C) 2006, 2007 Rob Landley <rob@landley.net>
233 d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	6 *
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	7 * Not in SUSv3, but see "Cat -v considered harmful" at
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	8 * http://cm.bell-labs.com/cm/cs/doc/84/kp.ps.gz
35 f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	9
233 d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	10 config CATV
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	11 bool "catv"
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	12 default y
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	13 help
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	14 usage: catv [-evt] [filename...]
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	15
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	16 Display nonprinting characters as escape sequences. Use M-x for
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	17 high ascii characters (>127), and ^x for other nonprinting chars.
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	18
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	19 -e Mark each newline with $
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	20 -t Show tabs as ^I
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	21 -v Don't use ^x or M-x escapes.
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of Rob Landley <rob@landley.net> parents: 194 diff changeset	22 */
35 f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	23
f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	24 #include "toys.h"
f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	25
185 29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	26 // Callback function for loopfiles()
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	27
187 c983a0af6d4e Add sha1sum. (No -c mode yet.) Slight tweaks to loopfiles() too. Rob Landley <rob@landley.net> parents: 186 diff changeset	28 static void do_catv(int fd, char *name)
185 29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	29 {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	30 for(;;) {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	31 int i, len;
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	32
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	33 len = read(fd, toybuf, sizeof(toybuf));
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	34 if (len < 0) toys.exitval = EXIT_FAILURE;
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	35 if (len < 1) break;
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	36 for (i=0; i<len; i++) {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	37 char c=toybuf[i];
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	38
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	39 if (c > 126 && (toys.optflags & 4)) {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	40 if (c == 127) {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	41 printf("^?");
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	42 continue;
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	43 } else {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	44 printf("M-");
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	45 c -= 128;
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	46 }
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	47 }
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	48 if (c < 32) {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	49 if (c == 10) {
186 25447caf1b4b Change command main() functions to return void, and exit(toys.exitval) from Rob Landley <rob@landley.net> parents: 185 diff changeset	50 if (toys.optflags & 1) xputc('$');
185 29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	51 } else if (toys.optflags & (c==9 ? 2 : 4)) {
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	52 printf("^%c", c+'@');
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	53 continue;
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	54 }
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	55 }
186 25447caf1b4b Change command main() functions to return void, and exit(toys.exitval) from Rob Landley <rob@landley.net> parents: 185 diff changeset	56 xputc(c);
185 29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	57 }
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	58 }
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	59 }
29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	60
186 25447caf1b4b Change command main() functions to return void, and exit(toys.exitval) from Rob Landley <rob@landley.net> parents: 185 diff changeset	61 void catv_main(void)
35 f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	62 {
f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	63 toys.optflags^=4;
185 29e2051296fd Add loopfiles() function, make catv use it. Rob Landley <rob@landley.net> parents: 155 diff changeset	64 loopfiles(toys.optargs, do_catv);
35 f2c7f0799ebe Add cat -v. Rob Landley <rob@landley.net> parents: diff changeset	65 }

Mercurial > hg > toybox

annotate toys/catv.c @ 233:d4176f3f3835