How to display characters with inconsistent lengths with a fixed length? - China DOS Union Forum

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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 ]

Floor1　namejm	Posted 2006-05-21 13:58
荣誉版主　Posts 1,737　Credits 5,226　From 成都
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 ]

Floor2　Climbing	Posted 2006-05-21 19:18
铂金会员　Posts 2,753　Credits 6,962　From 河北保定
In my opinion, I'm afraid some third-party tools are needed. At least, they can calculate the length of strings.

Floor3　willsort	Posted 2006-05-22 11:39
元老会员　Posts 1,512　Credits 4,432
─────────────────　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 ]