China DOS Union

In order to make the typesetting beautiful, you need to display several lines of characters with inconsistent lengths in a fixed length. How to achieve it?

The code is as follows:

@echo off

cls

color 2e

title Disk partition remaining space situation

echo.

echo.

echo        ╔══════════════════════════════╗

echo        ║        Disk partition                         Remaining space (MB)       ║

echo        ║    _____________________________________________________   ║

setlocal enabledelayedexpansion 

for %%a in (C D E F G H I J K L M N O P Q R S T U V W X Y Z) do (

if exist %%a:\nul (

for /f "tokens=3" %%b in ('dir /-c %%a:\^|find "Available bytes"') do (set freesize=%%b

set /a freesize=!freesize:~0,-3!/1049>nul 2>nul

echo        ║         %%a:                                !freesize!               ║

)

)

)

echo        ╚══════════════════════════════╝

pause>nul

[ Last edited by willsort on 2006-5-22 at 00:33 ]

In my opinion, I'm afraid some third-party tools are needed. At least, they can calculate the length of strings.

─────────────────　Moderation Record　─────────────────
Performed by: Will Sort
Action: Move Topic: From "DOS Troubleshooting & Question Discussion (Help Desk)"
Description: Classified according to the topic content, more suitable for posting in this forum area
Reminder: The original area transfer link will be deleted after three days
Punishment: Deduct 6 points of points awarded for posting this topic, and deduct 2 points of points for forum area violations
─────────────────　Moderation Record　─────────────────

Re namejm:

Calculating the length of a string in CMD is not very complicated. It can be achieved using for + set. The specific algorithm can be referred to . Then, according to specific needs, the string can be padded with spaces to a certain length.

However, there is a simpler solution for your requirement. Assuming that the length range of the string freesize is 0~17, then we first pad 17 spaces in front of freesize, and then directly take the last 17 characters of the string, which can get the right-aligned number freesize.

However, I still suggest that not using a border is the simplest way to handle typesetting.

@echo off
cls
color 2e
title Disk Partition Free Space Status
echo.
echo.
echo ╔══════════════════════════════╗
echo ║ Disk Partitions Free Space (MB) ║
echo ║ _____________________________________________________ ║
setlocal enabledelayedexpansion
for %%a in (C D E F G H I J K L M N O P Q R S T U V W X Y Z) do (
if exist %%a:\nul (
for /f "tokens=3" %%b in ('dir /-c %%a:\^|find "Available bytes"') do (
set freesize=%%b
set /a freesize=!freesize:~0,-3!/1049>nul 2>nul
set freesize= !freesize!
echo ║ %%a: !freesize:~-17! ║
)
)
)
echo ╚══════════════════════════════╝
pause>nul

Batch Code for Calculating String Length for Error Checking
http://www.cn-dos.net/forum/viewthread.php?tid=19819

[ Last edited by willsort on 2006-5-23 at 00:25 ]