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Groups > comp.lang.c > #395747
| From | Keith Thompson <Keith.S.Thompson+u@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: is_binary_file() |
| Date | 2025-12-09 15:42 -0800 |
| Organization | None to speak of |
| Message-ID | <87cy4ngr24.fsf@example.invalid> (permalink) |
| References | <10gvvh8$1vv6e$1@dont-email.me> <10h2t5s$3m1kg$1@paganini.bofh.team> <10h7402$9q1e$6@dont-email.me> <10h76ag$att7$1@dont-email.me> <10h9uo1$127kq$1@dont-email.me> |
Michael Sanders <porkchop@invalid.foo> writes:
> On Mon, 8 Dec 2025 18:44:33 +0000, bart wrote:
>> It's not clear what the actual problem is. What is the use-case
>> for a function that tells you whether any file /might/ be a
>> text-file based on speculative analysis of its contents? Is
>> the result /meant/ to be fuzzy?
>
> Hey bart.
>
> What I mean is that since I have not yet defined a canonical
> standard for my program, the goal here (to determine if my code
> can parse the file) is unclear.
>
> It means I need to plan much more *before* I write more code, no
> mean feat when one is excited & ready to jump in =)
You say you want to parse the file. That implies that you expect
the file to have a certain format/syntax, and for parsing to fail
on a file that doesn't satisfy the syntax. In that case, I
speculate that determining whether the file is text or binary is
not useful. The way to determine whether you can parse it is
simply to try to parse it, and see whether that succeeds or fails.
For example, if I want to parse a file containing a C translation
unit, I can feed it to a C compiler (or just a parser if I have
one). If the file contains non-text bytes, that's just a special
case of a syntactically incorrect input, and the parser will
detect it. It should work similarly for whatever format you're
trying to parse. I doubt that you need to distinguish between
incorrect input that's pure text and incorrect input that's
"binary". If I'm right about this (which is by no means
certain), you could have saved a lot of time by telling us up
front *why* you want to distinguish between "text" and "binary"
files. On the other hand, I've seized on the word "parse", and I
may be reading too much into it.
--
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
void Void(void) { Void(); } /* The recursive call of the void */
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is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-06 01:05 +0000
Re: is_binary_file() Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-12-06 01:41 +0000
Re: is_binary_file() Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-12-06 02:00 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 17:40 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 11:35 +0000
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-10 15:07 +0000
Re: is_binary_file() Michael S <already5chosen@yahoo.com> - 2025-12-10 19:00 +0200
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-10 17:18 +0000
Re: is_binary_file() Richard Heathfield <rjh@cpax.org.uk> - 2025-12-10 19:42 +0000
Re: is_binary_file() bart <bc@freeuk.com> - 2025-12-10 22:37 +0000
Re: is_binary_file() Paul <nospam@needed.invalid> - 2025-12-10 22:35 -0500
Re: is_binary_file() bart <bc@freeuk.com> - 2025-12-11 11:46 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-11 12:53 +0100
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 18:42 +0000
Re: is_binary_file() Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-12-10 15:58 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 18:44 +0000
Re: is_binary_file() James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-12-10 12:46 -0500
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 18:45 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 18:41 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 20:57 +0000
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-10 22:07 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-11 01:09 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-11 12:33 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-12 19:25 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-12 22:54 +0000
Re: is_binary_file() "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-12-12 15:33 -0800
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-13 00:20 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-13 02:32 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-16 00:26 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-16 17:24 +0100
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-17 03:19 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-17 07:57 +0100
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-17 19:35 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-18 08:44 +0100
Re: is_binary_file() bart <bc@freeuk.com> - 2025-12-18 12:49 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-18 14:06 +0100
Re: is_binary_file() gazelle@shell.xmission.com (Kenny McCormack) - 2025-12-18 13:17 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-18 16:03 +0100
Re: is_binary_file() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-12-05 17:42 -0800
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-06 17:37 +0000
Re: is_binary_file() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-12-06 16:05 -0800
Re: is_binary_file() Louis Krupp <lkrupp@invalid.pssw.com.invalid> - 2025-12-07 03:43 -0700
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-07 16:47 +0000
Re: is_binary_file() Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-12-27 03:18 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 17:46 +0000
Re: is_binary_file() Kaz Kylheku <046-301-5902@kylheku.com> - 2025-12-06 02:42 +0000
Re: is_binary_file() bart <bc@freeuk.com> - 2025-12-06 12:42 +0000
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-06 17:40 +0000
Re: is_binary_file() Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-12-06 18:04 +0000
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-06 19:06 +0000
Re: is_binary_file() Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-12-06 21:16 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 17:48 +0000
Re: is_binary_file() Kaz Kylheku <046-301-5902@kylheku.com> - 2025-12-08 19:26 +0000
Re: is_binary_file() Richard Heathfield <rjh@cpax.org.uk> - 2025-12-08 19:42 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-09 21:49 +0000
Re: is_binary_file() Paul <nospam@needed.invalid> - 2025-12-06 03:14 -0500
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 17:56 +0000
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-08 20:16 +0000
Re: is_binary_file() David Brown <david.brown@hesbynett.no> - 2025-12-09 09:03 +0100
Re: is_binary_file() Richard Heathfield <rjh@cpax.org.uk> - 2025-12-09 09:43 +0000
Re: is_binary_file() Richard Harnden <richard.nospam@gmail.invalid> - 2025-12-09 10:17 +0000
Re: is_binary_file() Kaz Kylheku <046-301-5902@kylheku.com> - 2025-12-09 20:15 +0000
Re: is_binary_file() tTh <tth@none.invalid> - 2025-12-09 12:22 +0100
Re: is_binary_file() Paul <nospam@needed.invalid> - 2025-12-09 20:26 -0500
Re: is_binary_file() Paul <nospam@needed.invalid> - 2025-12-09 06:38 -0500
Re: is_binary_file() Michael S <already5chosen@yahoo.com> - 2025-12-09 17:31 +0200
Re: is_binary_file() Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-12-28 02:49 +0000
Re: is_binary_file() Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-12-28 00:12 +0000
Re: is_binary_file() richard@cogsci.ed.ac.uk (Richard Tobin) - 2025-12-28 00:43 +0000
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-06 17:33 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-07 19:04 +0100
Re: is_binary_file() James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-12-06 20:37 -0500
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 18:02 +0000
Re: is_binary_file() James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-12-09 16:29 -0500
Re: is_binary_file() Michael S <already5chosen@yahoo.com> - 2025-12-10 11:21 +0200
Re: is_binary_file() James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-12-10 12:48 -0500
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 11:38 +0000
Re: is_binary_file() antispam@fricas.org (Waldek Hebisch) - 2025-12-07 03:43 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 18:04 +0000
Re: is_binary_file() bart <bc@freeuk.com> - 2025-12-08 18:44 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-09 19:53 +0000
Re: is_binary_file() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-12-09 15:42 -0800
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 11:41 +0000
Re: is_binary_file() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-12-10 15:20 -0800
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-10 23:59 +0000
Re: is_binary_file() James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-12-09 16:23 -0500
Re: is_binary_file() Richard Harnden <richard.nospam@gmail.invalid> - 2025-12-07 19:01 +0000
Re: is_binary_file() Richard Heathfield <rjh@cpax.org.uk> - 2025-12-07 21:51 +0000
Re: is_binary_file() Richard Harnden <richard.nospam@gmail.invalid> - 2025-12-07 22:49 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-08 13:51 +0100
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-08 16:04 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-08 19:27 +0100
Re: is_binary_file() Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-12-27 05:51 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-29 16:06 +0100
Re: is_binary_file() mjos_examine <m6502x64@gmail.com> - 2025-12-29 11:49 -0500
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-29 20:49 +0100
Re: is_binary_file() Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-12-30 01:52 +0000
Re: is_binary_file() scott@slp53.sl.home (Scott Lurndal) - 2025-12-08 16:02 +0000
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 18:07 +0000
Re: is_binary_file() Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-12-27 03:13 +0000
Re: is_binary_file() Paul <nospam@needed.invalid> - 2025-12-27 01:28 -0500
Re: is_binary_file() Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-12-27 21:27 +0000
Re: is_binary_file() antispam@fricas.org (Waldek Hebisch) - 2025-12-28 05:46 +0000
Re: is_binary_file() "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-12-07 14:42 -0800
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-08 18:09 +0000
Re: is_binary_file() "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-12-09 12:45 -0800
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-08 20:36 +0100
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-08 20:50 +0100
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-09 15:09 +0100
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-10 09:18 +0100
Re: is_binary_file() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2025-12-08 14:43 -0800
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-09 21:38 +0000
Re: is_binary_file() Kaz Kylheku <046-301-5902@kylheku.com> - 2025-12-11 17:33 +0000
Re: is_binary_file() Bonita Montero <Bonita.Montero@gmail.com> - 2025-12-11 19:10 +0100
Re: is_binary_file() "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-12-11 14:56 -0800
Re: is_binary_file() James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-12-11 18:15 -0500
Re: is_binary_file() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-12-12 02:19 +0100
Re: is_binary_file() Michael Sanders <porkchop@invalid.foo> - 2025-12-14 08:27 +0000
Re: is_binary_file() Lynn McGuire <lynnmcguire5@gmail.com> - 2025-12-17 00:52 -0600
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