Mercurial > hg > toybox
view toys/catv.c @ 63:69efffcacd70
Add fdprintf(). Remove reread() and rewrite() which handle -EINTR, which
shouldn't be a problem if we register signal handlers with sigaction(SA_RESTART)
Straighten out count and len (I generally consistently use "count" for the
current progress and "len" for the total, but this time I got them backwards
for some reason and don't want to confuse myself in future.)
author | Rob Landley <rob@landley.net> |
---|---|
date | Thu, 18 Jan 2007 21:54:08 -0500 |
parents | bb4c38853a7d |
children | 7c77c6ec17ee |
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/* vi: set sw=4 ts=4: */ /* * cat -v implementation for toybox * * Copyright (C) 2006 Rob Landley <rob@landley.net> */ /* See "Cat -v considered harmful" at * http://cm.bell-labs.com/cm/cs/doc/84/kp.ps.gz */ #include "toys.h" int catv_main(void) { int retval = 0, fd; char **argv = toys.optargs; toys.optflags^=4; // Loop through files. do { // Read from stdin if there's nothing else to do. fd = 0; if (*argv && 0>(fd = xopen(*argv, O_RDONLY))) retval = EXIT_FAILURE; else for(;;) { int i, res; res = read(fd, toybuf, sizeof(toybuf)); if (res < 0) retval = EXIT_FAILURE; if (res < 1) break; for (i=0; i<res; i++) { char c=toybuf[i]; if (c > 126 && (toys.optflags & 4)) { if (c == 127) { printf("^?"); continue; } else { printf("M-"); c -= 128; } } if (c < 32) { if (c == 10) { if (toys.optflags & 1) putchar('$'); } else if (toys.optflags & (c==9 ? 2 : 4)) { printf("^%c", c+'@'); continue; } } putchar(c); } } if (CFG_TOYS_FREE && fd) close(fd); } while (*++argv); return retval; }