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1990-10-27
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ECO is an enhanced version of the ECHO command, written by Lattice C 5.04
Note that "eco" means "echo" in the Italian language.
This is version 3.40! It is provided in two versions:
ECO less than 3K
ECOX more than 8K
ECOX has the same features of ECO plus those marked by # in the
present file. Hereinafter ECO is used for both ECO and ECOX.
Have fun!
Dr.Dario de Judicibus - Rome (ITALY)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Version: 3.40
Date: 1st April 1990
Format: Eco <string>
Template: ECO " "
Purpose: To display the argument given.
Syntax: string needs double quotes only if there are semicolons ";",
or redirectioning operators ">" and "<" in the string.
Echo has no options but use escape sequences to allow
different display formats. The escape character is
backslash (\).
Help:
? without the escape character, if first of line
\h anywhere in string
Special Characters:
\\ display escape character (\)
\q display double quotes (")
\? display a question mark (?)
Cursor sequences:
\n Line Feed + Carriage Return (newline)
\f Carriage Return (first column)
\t Horizontal Tab
\v Vertical Tab
\(x,y) Cursor position at row <x> and/or column <y>
\c Clear from current position to the end of screen
\C Home and clear the whole screen
\H Home
Text styles:
\p plain (normal) style (works as \d)
\i italic
\b bold
\u underscore
\r reverse
Text colors:
\0 to \3 Foreground colours 0 to 3
\4 to \7 Background colours 0 to 3
\d Back to default colours\style
# Variables:
#
# \[vx..vx] where vx are:
#
# vx Date vx Time
#
# d1 YYMMDD t1 HHMMSS
# d2 MM/DD/YY t2 HH:MM:SS
# d3 MM-DD-YY t3 HHMMSSCC
# d4 MMM DD, YYYY t4 HH:MM:SS.CC
# d5 Month DD, YYYY t5 HH:MM
# d6 DD MMM YY t6 HH:MM:SS AM/PM
# d7 DD MMM YYYY t7 HH:MM AM/PM
#
# vx Day of Week vx Path
#
# w1 DDD p CurrentDir
# w2 DayOfWeek
#
# Delays:
#
# \W Wait until the user presses ENTER
# \Dx Wait for "x" seconds
#
# Environment:
#
# \{evar} where evar is an environment variable (ENV:)
#
# \$cmd$ where cmd is any command you wish to issue while
# eco is running
Others:
\? To get a short help
\x.. Display an HEX character ".." (e.g. \x45 = "E")
\s No auto \n at the end of string (sequence) (§)
(§) Note: this sequence works only if appended at the end
of the string, otherwise it is ignored.
Notes: Use ECO ? to get the help. If the first character of string
is a question mark, the help is displayed and the rest of
string is ignored. If you wish to echo a string beginning with
a question mark, you have to way:
ECO "? This string begins with a question mark."
ECO \? This string begins with a question mark, too.
If you wish to display the help within your text, just use
\h as follows:
ECO "The help of ECO is:\n\h\nNice, isn't it?"
NOW BOTH ECO AND ECOX ARE PURE! That is you can make them
resident by
RESIDENT ECO (or ECOX)
No PURE option is necessary, unless you copied or unarchived
the programs in such a way to loose the PURE bit.
Examples: [both ECO and ECOX features]
let's suppose that colors are:
0 --> Grey; 1 --> White; 2 --> Black; 3 --> Red;
the sequence
Echo "\6\C\(5,10) Heeelp! \(10) \d\c"
1) Set the background to Black
2) Clear the screen and put the cursor on top-left corner
3) Position the cursor at row 5, column 10
4) Write " Heeelp! "
5) Put the cursor at the first column of row 10
6) Reset the background to the default (Grey)
7) Clear the screen from current position to the bottom line
Note that the sequences \C\6 and \6\C have different effects:
the first former the whole screen and display the new background
only for the output string, the latter set the background and,
clearing the screen, fill it with the selected color.
By using the \(..;..) sequence, you can create CLI macro which
write always on the same line, so that it's possible to change
continuosly a counter in a prompt as well as when you format a
diskette. However, in that case, is better you clear the screen
by using \C to avoid side effects on old output lines. If you
don't want to clear the screen, use the \v (vertical tab)
sequence, which allows you to go up one line.
You may want to use the ECO command to make passwords invisible
while typing in, as follows:
ECO Enter your password:\x9B0 p\0\4\n
--- get the password here ---
ECO \x9B p
IF WARN
ECO \1Wrong password
ELSE
ECO \3You got it!\1
ENDIF
where the sequence "\x9b0 p" ["\9b p"] is used to make the cursor
invisible [visible].
By ECO you may stop for user pressing ENTER, as follows:
ECO "Here are... a lot of lines"
ECO "Press ENTER to continue...\W"
ECO "Here are... a lot of lines again"
or just delay for a predefined number of seconds (1 to 9):
ECO "Now wait two seconds\D2 and go ahead..."
You can include environment (ENV:) variables in your text by
using the \{..} sequence. Let's suppose you did the following:
SETENV bye "Hello, world!"
Then you get the variable string as follows:
ECO "\2\{bye}\d That's all, folk!"
You can also issue commands while ECO is running. For instance,
the following line will display the name and the content of the
current directory:
ECO "Current dir is \2\[p]\1 and its content is:\n\$dir$"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Compile &
Link ECO: To compile and link ECO you have three way:
«1» lmk -f eco.lmk
«2» rx doeco
«3» execute eco.c
To compile and link ECOX you have three way:
«1» lmk ecox -f eco.lmk
«2» rx doeco EXTRA
«3» execute eco.c (see below)
Only mode «1» is complete and automatic. Mode «2» does assume
that eco.sym has been already generated. If not, you have to do
that by issuing
LC -ph -oeco.sym ecohdr.c
Mode «3» assumes eco.sym as mode «2». Furthermore, to generate
ECOX, you have to delete the semicolon character in front of two
statements in the eco.c header lines, and add the same character
two the equivalent lines used to generate ECO.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Package: ECO.ZOO (or LZH) contains the following files:
---p-rwed 90-04-01 17:49:16 7 3268 eco
---p-rwed 90-04-01 17:51:16 20 9424 ecox
-----rwed 90-04-01 17:48:00 29 13752 eco.c
-----rwed 90-04-01 17:24:56 1 310 ecohdr.c
-----rwed 90-04-01 17:25:12 49 23511 eco.sym
-----rwed 90-04-01 18:05:10 20 9449 eco.hlp
-----rwed 90-04-01 17:24:45 2 584 eco.lmk
--s------ 90-04-01 17:54:30 4 1807 eco.me
-----rwed 90-04-01 17:25:01 3 1126 doeco.rexx
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Problems: I didn't find any wait to reset the text style WITHOUT resetting
colours too. Hence \p works as \d, rather than restoring the
style only.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Author: Dario de Judicibus
Address: via Canton 101
I 00144 Roma (Italia)
Phone: (+39-6) 68.88.765 (evening only local time)
E-Mail: SAM Link (+39-6) 423.322 Userid 244
MC Link (+39-6) 418.0440 Userid MC2120
ARGO (+39-6) 519.1770 Userid Dario de Judicibus
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~