使用批处理从文本文件中读取多行

Question

我有以下带有证书数据的文件

###################
The signature is timestamped: Wed Nov 30 18:19:59 2016

Timestamp Verified by:
    Issued to: Thawte Timestamping CA

    Issued by: Thawte Timestamping CA

    Expires:   Fri Jan 01 05:29:59 2021

    SHA1 hash: BE36A4562FB2EE05DBB3D32323ADF445084ED656
###################

我正在寻找批处理脚本中的帮助，以筛选出

1. 签名已加盖时间戳：
2. SHA1散列：

有人能帮帮我吗？

我试过跟随，但不好：

@echo off
for /f "tokens=*" %%a in (result.txt) do (
  echo line=%%a
)
pause

谢谢,

Answer 1

试试这个(没有测试)：

for /f  "skip=1 tokens=1* delims=:" %%a in ('find "The signature is timestamped:" "result.txt" ') do (
   set "timestamped=%%b"
)

for /f  "skip=1 tokens=1* delims=:" %%a in ('find "SHA1 hash" "result.txt" ') do (
   set "hash=%%b"
)

echo %timestamped% -- %hash%

Answer 2

下面的脚本，让我们称之为extract.bat，做您想要的。它只考虑位于包含###################的第一行和第二行之间的行。

@echo off
setlocal EnableExtensions DisableDelayedExpansion

rem // Define constants here:
set "_FRAME=###################"
set "_FILE=%~1" & rem // (use file provided by command line argument)
set "_SEARCH[1]=The signature is timestamped:"
set "_SEARCH[2]=SHA1 hash:"
rem "_SEARCH[...]=...:"

rem // Determine numbers of first and second lines containing string `%_FRAME%`:
set "FRST=" & set "SCND="
for /F "delims=:" %%K in ('
    findstr /N /C:"%_FRAME%" "%_FILE%"
') do (
    if not defined FRST (
        set /A "FRST=%%K"
    ) else (
        if not defined SCND set /A "SCND=%%K"
    )
)
rem // Continue only if two lines have been found containing string `%_FRAME%`:
if defined FRST if defined SCND (
    rem // Enumerate all search strings `_SEARCH[?]` in alphabetical order:
    for /F "tokens=1,* delims==" %%I in ('2^> nul set _SEARCH[') do (
        rem // Process currently iterated search string:
        for /F "tokens=1,2,* delims=:" %%L in ('
            findstr /N /C:"%%J" "%_FILE%"
        ') do (
            rem // Check if current line lies in between the two derived before:
            if %%L GTR %FRST% if %%L LSS %SCND% (
                rem // Return remaining string value with leading spaces removed:
                for /F "tokens=*" %%O in ("%%N") do echo(%%O
            )
        )
    )
)

endlocal
exit /B

将文本文件作为命令行参数提供，如：

extract.bat "result.txt"

如果要在包含###################的第二行和第三行之间处理数据，请更改该行.：

for /F "delims=:" %%K in ('

...to：

for /F "skip=1 delims=:" %%K in ('

相应地增加用于处理下一个块的skip号。

如果您不关心###################行(如果文本文件不包含多个数据块)，可以将脚本简化为：

@echo off
setlocal EnableExtensions DisableDelayedExpansion

rem // Define constants here:
set "_FILE=%~1" & rem // (use file provided by command line argument)
set "_SEARCH[1]=The signature is timestamped:"
set "_SEARCH[2]=SHA1 hash:"
rem "_SEARCH[...]=...:"

rem // Enumerate all search strings `_SEARCH[?]` in alphabetical order:
for /F "tokens=1,* delims==" %%I in ('2^> nul set _SEARCH[') do (
    rem // Process currently iterated search string:
    for /F "tokens=1,* delims=:" %%M in ('
        findstr /C:"%%J" "%_FILE%"
    ') do (
        rem // Return remaining string value with leading spaces removed:
        for /F "tokens=*" %%O in ("%%N") do echo(%%O
    )
)

endlocal
exit /B