Create a file on magnetic tape: Difference between revisions
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{{omit from|AWK|not OO}}
{{omit from|BASIC|not OO}}
{{omit from|C
{{omit from|Fortran|not OO}}
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{{omit from|Retro}}
{{omit from|TI-89 BASIC}}
{{omit from|Visual Basic .NET}}
{{omit from|zkl}}
The task is to create a new file called "TAPE.FILE" of any size on Magnetic Tape.
=={{header|Action!}}==
<syntaxhighlight lang="action!">PROC Save(CHAR ARRAY text)
BYTE dev=[1]
Close(dev)
Open(dev,"C:",8,128)
PrintE("Saving started...")
PrintF("Saving text: ""%S""%E",text)
PrintD(dev,text)
Close(dev)
PrintE("Saving finished.")
RETURN
PROC Load()
CHAR ARRAY result(255)
BYTE dev=[1]
Close(dev)
Open(dev,"C:",4,128)
PrintE("Loading started...")
WHILE Eof(dev)=0
DO
InputSD(dev,result)
PrintF("Loading text: ""%S""%E",result)
OD
Close(dev)
PrintE("Loading finished.")
RETURN
PROC Main()
BYTE CH=$02FC ;Internal hardware value for last key pressed
PrintE("Press any key to save a file on tape.")
Save("Atari Action!")
PutE()
PrintE("Rewind the tape and press any key to load previously saved file from tape.")
Load()
RETURN</syntaxhighlight>
{{out}}
[https://gitlab.com/amarok8bit/action-rosetta-code/-/raw/master/images/Create_a_file_on_magnetic_tape.png Screenshot from Atari 8-bit computer]
<pre>
Press any key to save a file on tape.
Saving started...
Saving text: "Atari Action!"
Saving finished.
Rewind the tape and press any key to load previously saved file from tape.
Loading started...
Loading text: "Atari Action"
Loading finished.
</pre>
=={{header|Applesoft BASIC}}==
<syntaxhighlight lang
=={{header|Arturo}}==
<syntaxhighlight lang="rebol">write "TAPE.FILE" {
This code
should be able to write
a file
to magnetic tape
}</syntaxhighlight>
=={{header|C}}==
The program is self explanatory. :)
<syntaxhighlight lang="c">
#include<stdio.h>
int main()
{
FILE* fp = fopen("TAPE.FILE","w");
fprintf(fp,"This code should be able to write a file to magnetic tape.\n");
fprintf(fp,"The Wikipedia page on Magnetic tape data storage shows that magnetic tapes are still in use.\n");
fprintf(fp,"In fact, the latest format, at the time of writing this code is TS1155 released in 2017.\n");
fprintf(fp,"And since C is already 44, maybe 45, years old in 2017, I am sure someone somewhere did use a C compiler on magnetic tapes.\n");
fprintf(fp,"If you happen to have one, please try to compile and execute me on that system.\n");
fprintf(fp,"My creator tested me on an i5 machine with SSD and RAM that couldn't have even been dreamt of by Denis Ritchie.\n");
fprintf(fp,"Who knows ? Maybe he did foresee today, after all he created something which is still young after 44-45 years and counting...\n");
fprintf(fp,"EOF");
fclose(fp);
return 0;
}
</syntaxhighlight>
=={{header|C++}}==
{{trans|D}}
<syntaxhighlight lang="cpp">#include <iostream>
#include <fstream>
#if defined(_WIN32) || defined(WIN32)
constexpr auto FILENAME = "tape.file";
#else
constexpr auto FILENAME = "/dev/tape";
#endif
int main() {
std::filebuf fb;
fb.open(FILENAME,std::ios::out);
std::ostream os(&fb);
os << "Hello World\n";
fb.close();
return 0;
}</syntaxhighlight>
=={{header|Clojure}}==
<
=={{header|COBOL}}==
{{works with|
<
IDENTIFICATION DIVISION.
PROGRAM-ID. MAKE-TAPE-FILE.
Line 37 ⟶ 145:
FILE-CONTROL.
SELECT TAPE-FILE
ASSIGN TO "./TAPE.FILE"
ORGANIZATION IS
ACCESS MODE IS SEQUENTIAL.
DATA DIVISION.
FILE SECTION.
FD TAPE-FILE RECORD CONTAINS 51 CHARACTERS.
01 TAPE-FILE-RECORD
PROCEDURE DIVISION.
Line 50 ⟶ 159:
FROM "COBOL treats tape files and text files identically."
END-WRITE
STOP RUN.
END PROGRAM MAKE-TAPE-FILE.</syntaxhighlight>
=={{header|Crystal}}==
{{trans|D}}
<syntaxhighlight lang="ruby">filename = {% if flag?(:win32) %}
"TAPE.FILE"
{% else %}
"/dev/tape"
{% end %}
File.write filename, "howdy, planet!"</syntaxhighlight>
=={{header|D}}==
<syntaxhighlight lang="d">import std.stdio;
void main() {
version(Windows) {
File f = File("TAPE.FILE", "w");
} else {
File f = File("/dev/tape", "w");
}
f.writeln("Hello World!");
}</syntaxhighlight>
=={{header|Delphi}}==
{{Trans|D}}
<syntaxhighlight lang="delphi">
program Create_a_file_on_magnetic_tape;
{$APPTYPE CONSOLE}
const
{$IFDEF WIN32}
FileName = 'tape.file';
{$ELSE}
FileName = '/dev/tape';
{$ENDIF}
var
f: TextFile;
begin
Assign(f, FileName);
Rewrite(f);
Writeln(f, 'Hello World');
close(f);
end.
</syntaxhighlight>
=={{header|F#}}==
<syntaxhighlight lang="fsharp">
open System
open System.IO
let env = Environment.OSVersion.Platform
let msg = "Hello Rosetta!"
match env with
| PlatformID.Win32NT | PlatformID.Win32S | PlatformID.Win32Windows | PlatformID.WinCE -> File.WriteAllText("TAPE.FILE", msg)
| _ -> File.WriteAllText("/dev/tape", msg)
</syntaxhighlight>
=={{header|Factor}}==
<syntaxhighlight lang="factor">USING: io.encodings.ascii io.files kernel system ;
"Hello from Rosetta Code!"
os windows? "tape.file" "/dev/tape" ?
ascii set-file-contents</syntaxhighlight>
=={{header|Fortran}}==
Fortran performs reads and writes to some device, without caring much about the precise nature of the device: card reader/punch, paper tape reader/punch, keyboard, display console, and of course magnetic tape. Sequential input or output is normal, but random access by record number is also possible, though the interface between the Fortran program and the device may not support such attempts, as with a card reader or a display screen. There are also special statements, such as REWIND and BACKSPACE, and ENDFILE. The file OPEN statement will specify such matters as record length and block size and so all is in place for dealing with magnetic tapes...
Of the simplest sort: "Unlabelled". Such a tape consists of a sequence of data blocks, separated by inter-record-gaps, with two in a row at the end to specify the end-of-data on the tape. Although called inter-record, they are actually inter-block: the tape unit reads or writes blocks of say 5,000 characters, not caring that each block might be regarded as containing 50 records of length 100, or 100 records of length 50, etc. The inter-record gap is a sequence of three quarters of an inch of magnetic tape, containing special magnetisation that can be written or sensed at any speed, because these spaces are where the tape is brought to rest between reads or writes. That is, having written the data of a block at full speed, the tape write head writes an IRG as the tape is brought to a stop, and later, when it resumes motion to reach operating speed for the writing of the next block. With adequate data buffering, tape is moved past the head without pause through the IRG as blocks are read or written. If the tape is being read (and written!) with random access the width of the IRG allows for some slop in positioning. Some caution is in order: a "fast forward" action, followed by a few seconds pause to allow the attainment of maximum speed, then a REWIND resulted in a piece of tape being stretched to double length and half width...
Unlabelled tapes are quite inconvenient in a non-user operated computer installation, as mistakes are very easy to make. The wrong tape gets overwritten and the ensuing conversation sours. Computer-readable labels were introduced to supplement human-readable written labels affixed to the tape reel. Co-ordination and standardisation were weak in the 1970s, so there was a lot of variation and partial interoperability between manufacturers and ANSI standards. The first step was of course non-standard labels: some data would be written to the start of the tape that constituted a label, followed by a tape mark, then the actual data file, and so on. Users at an installation would attempt to conform to the local style, and there would be discussions, especially when tapes were exchanged with different systems. A large organisation such as IBM would have its method, and the basic idea was that at the start of the tape would be a volume label and additional information to allow for a data file (or multiple data files) that extended over many reels of tape, each tape identified in turn. This would start with an eighty-character record, beginning "VOL1" - but in EBCDIC, and only later in ASCII. None of this would be visible to the user's programme because it would be handled by the operating system with statements in Job Control Language for the run to identify the file on tape that is to be accessed when the user's programme executes an OPEN statement of a suitable form. And this access would revert to sequential reading or writing with quite ordinary READ and WRITE statements.
This was developed when tape drives used half-inch tapes in lengths up to 2,400 feet and seven or nine-track recording, storing up to about 150MB per reel - much depended on the length lost to IRG usage between blocks, but block sizes beyond 20,000 were considered large. Subsequent tape designs have included 18, 36, and 128 tracks, helical recording and storage capacities in tens of gigabytes. Naturally, the tape labelling protocols have become even more complex, but, these matters are handled by more complex operating systems.
=={{header|FreeBASIC}}==
<syntaxhighlight lang="freebasic">Dim As Integer numarch = Freefile
Open "tape.file" For Output As #numarch
Print #numarch, "Soy un archivo de cinta ahora, o espero serlo pronto."
Close #numarch</syntaxhighlight>
=={{header|Go}}==
Line 59 ⟶ 253:
The tar archive will contain a single file, called <tt>TAPE.FILE</tt> by default,
with the contents of the command line <tt>-data</tt> option.
<
import (
Line 111 ⟶ 305:
log.Fatal("writing data:", err)
}
}</
{{out}}
<pre>
% go run tapefile.go -data "Hello World" -gzip | tar -tvzf -
-rw-rw---- 0 guest guest 11 11 Aug 13:42 TAPE.FILE</pre>
=={{header|Groovy}}==
{{trans|Java}}
<syntaxhighlight lang="groovy">import java.nio.file.Files
import java.nio.file.Path
import java.nio.file.Paths
class CreateFile {
static void main(String[] args) throws IOException {
String os = System.getProperty("os.name")
if (os.contains("Windows")) {
Path path = Paths.get("tape.file")
Files.write(path, Collections.singletonList("Hello World!"))
} else {
Path path = Paths.get("/dev/tape")
Files.write(path, Collections.singletonList("Hello World!"))
}
}
}</syntaxhighlight>
=={{header|Haskell}}==
<syntaxhighlight lang="haskell">module Main (main) where
main :: IO ()
main = writeFile "/dev/tape" "Hello from Rosetta Code!"</syntaxhighlight>
=={{header|Icon}} and {{header|Unicon}}==
This solution mimics the solution used in many other languages here and works in both Icon and Unicon.
<
write(open("/dev/tape","w"),"Hi")
end</
=={{header|IS-BASIC}}==
<syntaxhighlight lang="is-basic">100 OPEN #1:"Tape1:README.TXT" ACCESS OUTPUT
110 PRINT #1:"I am a tape file now, or hope to be soon."
120 CLOSE #1</syntaxhighlight>
=={{header|Java}}==
<syntaxhighlight lang="java">import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;
public class CreateFile {
public static void main(String[] args) throws IOException {
String os = System.getProperty("os.name");
if (os.contains("Windows")) {
Path path = Paths.get("tape.file");
Files.write(path, Collections.singletonList("Hello World!"));
} else {
Path path = Paths.get("/dev/tape");
Files.write(path, Collections.singletonList("Hello World!"));
}
}
}</syntaxhighlight>
=={{header|JCL}}==
<
//* Create a file named "TAPE.FILE" on magnetic tape; "UNIT=TAPE"
//* may vary depending on site-specific esoteric name assignment
Line 133 ⟶ 378:
//SYSUT1 DD *
DATA TO BE WRITTEN TO TAPE
/* </
=={{header|Julia}}==
<syntaxhighlight lang="julia">
open("/dev/tape", "w") do f
write(f, "Hello tape!")
end
</syntaxhighlight>
=={{header|Kotlin}}==
{{trans|Scala}}
<syntaxhighlight lang="scala">// version 1.1.0 (Linux)
import java.io.FileWriter
fun main(args: Array<String>) {
val lp0 = FileWriter("/dev/tape")
lp0.write("Hello, world!")
lp0.close()
}</syntaxhighlight>
=={{header|Lua}}==
<syntaxhighlight lang="lua">require "lfs"
local out
if lfs.attributes('/dev/tape') then
out = '/dev/tape'
else
out = 'tape.file'
end
file = io.open(out, 'w')
file:write('Hello world')
io.close(file)</syntaxhighlight>
=={{header|Nim}}==
<
t.writeln "Hi Tape!"
t.close</
=={{header|
<syntaxhighlight lang="phix">include builtins/write_file.e
constant filepath = iff(platform()=WINDOWS?"tape.file":"/dev/tape"),
write_file(file_path,"Hello world!")</syntaxhighlight>
=={{header|PicoLisp}}==
<
(prin "Hello World!") )</
=={{header|Python}}==
<
...
>>> </
=={{header|Racket}}==
<syntaxhighlight lang="racket">
#lang racket
(with-output-to-file "/dev/tape" #:exists 'append
(λ() (displayln "I am a cheap imitation of the Perl code for a boring problem")))
</syntaxhighlight>
=={{header|Raku}}==
(formerly Perl 6)
<syntaxhighlight lang="raku" line>my $tape = open "/dev/tape", :w or die "Can't open tape: $!";
$tape.say: "I am a tape file now, or hope to be soon.";
$tape.close;</syntaxhighlight>
=={{header|REXX}}==
Line 167 ⟶ 450:
<br><br>VM/CMS would use a '''CP ATTACH''' command, coupled with a '''CMS FILEDEF''' command which associates a
<br>DSNAME (dataset name) that will be written to on the attached (and mounted) magnetic tape device.
<
dsName = 'TAPE.FILE' /*dsName of "file" being written.*/
Line 173 ⟶ 456:
call lineout dsName, 'this is record' j || "."
end /*j*/
/*stick a fork in it, we're done.*/</
=={{header|Ring}}==
<syntaxhighlight lang="ring">
# Project : Create a file on magnetic tape
fn = "Tape.file"
fp = fopen(fn,"w")
str = "I am a tape file now, or hope to be soon."
fwrite(fp, str)
fclose(fp)
</syntaxhighlight>
=={{header|Ruby}}==
{{trans|C}}
<syntaxhighlight lang="ruby">File.open("tape.file", "w") do |fh|
fh.syswrite("This code should be able to write a file to magnetic tape.\n")
end</syntaxhighlight>
=={{header|Rust}}==
<syntaxhighlight lang="rust">use std::io::Write;
use std::fs::File;
fn main() -> std::io::Result<()> {
File::open("/dev/tape")?.write_all(b"Hello from Rosetta Code!")
}</syntaxhighlight>
=={{header|Scala}}==
===[[Unix]]===
Assuming device is attached to "tape"
<
import java.io.{ FileWriter, IOException }
{
Line 185 ⟶ 493:
lp0.close()
}
}</
=={{header|Seed7}}==
<syntaxhighlight lang="seed7">$ include "seed7_05.s7i";
const proc: main is func
local
var file: tapeFile is STD_NULL;
begin
tapeFile := open("/dev/tape", "w");
if tapeFile = STD_NULL then
tapeFile := open("tape.file", "w");
end if;
if tapeFile <> STD_NULL then
writeln(tapeFile, "Hello, world!");
close(tapeFile);
else
writeln(" ***** Cannot open tape file.");
end if;
end func;</syntaxhighlight>
=={{header|Tcl}}==
Tcl does not have built-in special support for tape devices, so it relies on the OS to handle most of the details for it. Assuming a relatively modern Unix:
{{trans|UNIX Shell}}
<
# Create the file
Line 201 ⟶ 530:
fcopy $fin $fout
close $fin
close $fout</
=={{header|TUSCRIPT}}==
<
STATUS = CREATE ("tape.file",tape-o,-std-)
PRINT STATUS</
{{Out}}
<pre>
Line 213 ⟶ 542:
=={{header|UNIX Shell}}==
<
cd # Make our home directory current
echo "Hello World!" > hello.jnk # Create a junk file
# tape rewind # Uncomment this to rewind the tape
tar c hello.jnk # Traditional archivers use magnetic tape by default
# tar c hello.jnk > /dev/tape # With newer archivers redirection is needed</
=={{header|Wren}}==
<syntaxhighlight lang="wren">import "os" for Platform
import "io" for File
var fileName = (Platform.isWindows) ? "TAPE.FILE" : "/dev/tape"
File.create(fileName) { |file|
file.writeBytes("Hello World!\n")
}</syntaxhighlight>
=={{header|ZX Spectrum Basic}}==
Line 225 ⟶ 563:
We can use any start address, depending on where we want the data to come from.
Here we dump the contents of the screen:
<
| |||