从文本文档中批量提取不断变化的未知哈希码

Question

我想为 server.jar 文件编写一个小的更新工具，以节省我手动完成的所有工作我正在使用的程序会在发布新更新时创建一个包含文件的文件夹。这几乎就是程序的工作原理：

get hash of current server.jar
find latest created folder (eg. update12)
open the file in the update12 folder (eg. update12.txt)
***extract the hash code -> %newHash%***    thats where im having the issue
compare the extracted hashcode (%newHash%) and the calculated hashcode (%currentHash%)
if they are not equal go to www.downloadupdate.com/updates/%newHash%/server.jar
download the file and replace the old server.jar with the new one.

我遇到的问题是我无法读出 update12.txt 文件中的散列，该文件大约有 36000 个符号长，并且只有一行

"server": {"sha1": "16f18c21286a3f566d3d0431d13aa133bebe6eff"

我想检测 "server": {"sha1": " 部分然后复制哈希我尝试了很多在这个论坛上找到的选项，但 none 似乎有效像这个

set /p txt=<update12.txt
pause >nul
echo %txt%
pause >nul
for /f %%i in ('powershell -noprofile -c "('%txt:"=\"%' -split '\""')[1]"') do set id=%%i
echo %id%

只是导致批处理文件立即关闭进一步设置 /p txt=

如果您有任何解决方案，我将不胜感激

Answer 1

@echo off


Setlocal EnableDelayedExpansion
xcopy %appdata%\.minecraft\versions\%MCversion%\%MCversion%.json %appdata%\.minecraft\versions\%MCversion%\%MCversion%.text*
ren %appdata%\.minecraft\versions\%MCversion%\%MCversion%.text %MCversion%.txt

set search1= 
set search2=,
set search3=:
set textFile=%appdata%\.minecraft\versions\%MCversion%\%MCversion%.txt

:PowerShell
SET PSScript=%temp%\~tmpStrRplc.ps1
ECHO (Get-Content "%textFile%").replace("%search1%", "") ^| Set-Content "%textFile%">"%PSScript%"
Powershell -ExecutionPolicy Bypass -Command "& '%PSScript%'"
SET PSScript=%temp%\~tmpStrRplc.ps1
echo done.

ECHO (Get-Content "%textFile%").replace("%search2%", "") ^| Set-Content "%textFile%">"%PSScript%"
Powershell -ExecutionPolicy Bypass -Command "& '%PSScript%'"
SET PSScript=%temp%\~tmpStrRplc.ps1
echo done.

ECHO (Get-Content "%textFile%").replace("%search3%", "") ^| Set-Content "%textFile%">"%PSScript%"
Powershell -ExecutionPolicy Bypass -Command "& '%PSScript%'"
SET PSScript=%temp%\~tmpStrRplc.ps1
echo done.
:skip
ECHO (Get-Content "%textFile%").replace("server", "`r`nlookup") ^| Set-Content "%textFile%">"%PSScript%"
Powershell -ExecutionPolicy Bypass -Command "& '%PSScript%'"
echo done.

for /f %%a in ('findstr "lookup\"{\"sha1\"\"" %textFile%') do set "newVersion=%%a"
set newVersion=%newVersion:~15,40%
echo %newVersion%
del %textFile%
pause
:exit
exit

这段代码对我有用，它的作用：

copy the "update12.txt"
look for " " "," and ":" in the copied txt and delete the symbols
look for server replace it with a "*linebreak*lookup" 
find the string lookup"{"sha1""
trim the edges of the string with 15,40
done.

从文本文档中批量提取不断变化的未知哈希码

extracting a changing and unknown hashcode from text document in batch

batch-file

batch-processing