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44 Commits

Author SHA1 Message Date
Hiltjo Posthuma
d6aff89bbb tail: allow tail -n 0 or tail -0 
fix a crash, but allow this option.
 2015-03-30 21:24:46 +02:00
FRIGN
9144d51594 Check getline()-return-values properly 
It's not useful when 0 is returned anyway, so be sure that we have a
string with length > 0, this also solves some indexing-gotchas like
"len - 1" and so on.
Also, add checked getline()'s whenever it has been forgotten and
clean up the error-messages.
 2015-03-27 14:49:48 +01:00
FRIGN
6372a8f227 Audit tail(1) 
1) Specify default in manpage under flag.
2) Boolean and return value style fixes.
3) argv-argc-centric loop.
4) No need to check for argc == 1 before the fflag-subroutine.
5) Remove indentation.
6) Empty line before return.
 2015-03-17 23:24:43 +01:00
sin
eca23e5308 tail: Add -num to usage and fix manpage to align with head.1 2015-03-05 08:16:58 +00:00
Hiltjo Posthuma
31f0624f3d code-style: minor cleanup and nitpicking 2015-02-20 13:29:38 +01:00
FRIGN
31572c8b0e Clean up #includes 2015-02-14 21:12:23 +01:00
FRIGN
7c578bf5b0 Scrap writerune(), introducing fputrune() 
Interface and function as proposed by cls.
Code is also shorter, everything else analogous to fgetrune().
 2015-02-11 20:58:00 +01:00
FRIGN
a5ae899a48 Scrap readrune(), introducing fgetrune() 
Interface as proposed by cls, but internally rewritten after a few
considerations.
The code is much shorter and to the point, aligning itself with other
standard functions. It should also be much faster, which is not bad.
 2015-02-11 20:16:49 +01:00
FRIGN
9292ae2e16 Small code cleanup in tail(1) 2015-02-09 18:46:47 +01:00
FRIGN
006c9739b3 Add c-flag to tail(1) and refactor manpage 
and mark it as finished in README.
 2015-02-09 18:38:41 +01:00
sin
989127e525 tail: Skip leading spaces in tail -n " +20" 2015-02-09 16:10:00 +00:00
sin
fe3fc41838 tail: Fix tail -n -val to handle leading spaces 
Previously 'tail -n "    -20" foo' was broken, now it works.
 2015-02-09 16:05:55 +00:00
sin
f802a544e7 tail: Handle tail -n -val properly 2015-02-09 15:52:31 +00:00
sin
124cb7415a tail: Ignore anything other than FIFOs and regular files for -f 2015-02-09 15:03:35 +00:00
sin
a25a57f6ac tail: Add rudimentary support to detect file truncation 
We cannot in general detect that truncation happened.  At the moment
we use a heuristic to compare the file size before and after a write
happened.  If the new file size is smaller than the old, we correctly
handle truncation and dump the entire file to stdout.

If it so happened that the new size is larger or equal to the old size
after the file had been truncated without any reads in between, we will
assume the data was appended to the file.

There is no known way around this other than using inotify or kevent
which is outside the scope of sbase.
 2015-02-09 14:47:35 +00:00
FRIGN
ff7093f7b3 An additional size_t-fix in tail(1) 2015-02-09 15:47:08 +01:00
FRIGN
78f33ff069 Convert tail(1) to use size_t 2015-02-09 15:30:23 +01:00
sin
080a1ee833 No need to free the buffer for every call to getline() 
It will realloc as necessary if the new line size exceeds the
capacity of the allocated buffer.
 2015-02-09 14:11:06 +00:00
FRIGN
2a83c2c8be Add f-flag to tail(1) and refactor code 2015-02-09 15:06:17 +01:00
sin
b66c44b24e ARGNUMF() only works on base 10 as it uses strtonum underneath 2015-01-30 16:45:44 +00:00
FRIGN
fd562481f3 Convert estrto{l, ul} to estrtonum 
Enough with this insanity!
 2015-01-30 16:52:44 +01:00
sin
d221e5ea5b Print header in tail(1) 2014-11-20 23:09:42 +00:00
sin
821a980ab4 Respect exit status in tail(1) 
There are more instances of this problem.
 2014-11-20 22:52:13 +00:00
Evan Gates
84b08427a1 remove agetline 2014-11-18 21:05:28 +00:00
FRIGN
e17b9cdd0a Convert codebase to use emalloc.c utility-functions 
This also definitely increases readability and makes OOM-conditions
more consistent.
 2014-11-16 10:22:39 +00:00
FRIGN
eee98ed3a4 Fix coding style 
It was about damn time. Consistency is very important in such a
big codebase.
 2014-11-13 18:08:43 +00:00
sin
0c5b7b9155 Stop using EXIT_{SUCCESS,FAILURE} 2014-10-02 23:46:59 +01:00
Wolfgang Corcoran-Mathe
7a6af2faba Fix typo breaking functionality in tail 2014-09-17 10:06:12 +01:00
Hiltjo Posthuma
fab4b384e7 use agetline instead of agets 
also use agetline where fgets with a static buffer was used previously.

Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
 2014-06-01 18:03:10 +01:00
Hiltjo Posthuma
953ebf3573 code style 
Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
 2014-06-01 18:02:30 +01:00
sin
b8edf3b4ee Add weprintf() and replace fprintf(stderr, ...) calls 
There is still some programs left to be updated for this.

Many of these programs would stop on the first file that they
could not open.
 2013-11-13 11:41:43 +00:00
sin
cfe5e9ef3a Support tail-ing multiple files 2013-11-12 10:47:22 +00:00
dsp
3f9e501f6b Add ARGNUM and ARGNUMF(base) 
This is useful to support the obsolete syntax -NUM for tools like
head, tail and fold.
 2013-11-12 10:17:52 +00:00
sin
b5a511dacf Exit with EXIT_SUCCESS/EXIT_FAILURE instead of 0 and 1 
Fixed for consistency purposes.
 2013-10-07 16:44:22 +01:00
sin
7d4d519a51 Fix segfault in tail(1) 
We should not be looking at optarg, that's uninitialized.  We
are not using getopt.
 2013-09-29 16:58:19 +01:00
stateless
7216a53a7e Remove unnecessary exit(1) in usage() 
Signed-off-by: Christoph Lohmann <20h@r-36.net>
 2013-06-19 19:58:19 +02:00
Christoph Lohmann
4d38f60685 Eliminating the getopt disgrace. 2013-06-14 20:20:47 +02:00
Connor Lane Smith
954106050f rename estrtol 2011-06-10 14:55:01 +01:00
Connor Lane Smith
61247e3595 tail: gcc whines 2011-06-10 14:51:53 +01:00
Connor Lane Smith
7c251bcd4f refactor strnum 2011-06-10 05:41:40 +01:00
Connor Lane Smith
73c2898e91 typo 2011-05-27 11:13:38 +01:00
Connor Lane Smith
ad442060b8 tail cleanup 2011-05-26 16:29:22 -01:00
Connor Lane Smith
a2be57eca8 tail: free rings 2011-05-26 16:24:56 -01:00
Connor Lane Smith
bf9626d408 add tail 2011-05-26 16:18:42 -01:00