Mercurial > hg > toybox
view toys/other/dos2unix.c @ 674:7e846e281e38
New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
author | Rob Landley <rob@landley.net> |
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date | Mon, 08 Oct 2012 00:02:30 -0500 |
parents | 6df4ccc0acbe |
children | 786841fdb1e0 |
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/* vi: set sw=4 ts=4: * * dos2unix.c - convert newline format * * Copyright 2012 Rob Landley <rob@landley.net> USE_DOS2UNIX(NEWTOY(dos2unix, NULL, TOYFLAG_BIN)) USE_DOS2UNIX(OLDTOY(unix2dos, dos2unix, NULL, TOYFLAG_BIN)) config DOS2UNIX bool "dos2unix/unix2dos" default y help usage: dos2unix/unix2dos [file...] Convert newline format between dos (\r\n) and unix (just \n) If no files listed copy from stdin, "-" is a synonym for stdin. */ #define FOR_dos2unix #include "toys.h" GLOBALS( char *tempfile; ) static void do_dos2unix(int fd, char *name) { char c = toys.which->name[0]; int outfd = 1, catch = 0; if (fd) outfd = copy_tempfile(fd, name, &TT.tempfile); for (;;) { int len, in, out; len = read(fd, toybuf+(sizeof(toybuf)/2), sizeof(toybuf)/2); if (len<0) { perror_msg("%s",name); toys.exitval = 1; } if (len<1) break; for (in = out = 0; in < len; in++) { char x = toybuf[in+sizeof(toybuf)/2]; // Drop \r only if followed by \n in dos2unix mode if (catch) { if (c == 'u' || x != '\n') toybuf[out++] = '\r'; catch = 0; // Add \r only if \n not after \r in unix2dos mode } else if (c == 'u' && x == '\n') toybuf[out++] = '\r'; if (x == '\r') catch++; else toybuf[out++] = x; } xwrite(outfd, toybuf, out); } if (catch) xwrite(outfd, "\r", 1); if (fd) replace_tempfile(-1, outfd, &TT.tempfile); } void dos2unix_main(void) { loopfiles(toys.optargs, do_dos2unix); }