WIndows findstr

Question

我想使用以下命令搜索文本文件中的字符串

findstr silence_start:* test.txt

这是输出

C:\Users\brett\Desktop\masterpuppets>findstr  ilence_start:* test.txt
[silencedetect @ 00000000042eb5c0] silence_start: -0.00260771
[silencedetect @ 00000000042eb5c0] silence_start: 310.019
[silencedetect @ 00000000042eb5c0] silence_start: 822.097
[silencedetect @ 00000000042eb5c0] silence_start: 1211.84
[silencedetect @ 00000000042eb5c0] silence_start: 1605.72
[silencedetect @ 00000000042eb5c0] silence_start: 2443.7
[silencedetect @ 00000000042eb5c0] silence_start: 2946.45
[silencedetect @ 00000000042eb5c0] silence_start: 2955.28
[silencedetect @ 00000000042eb5c0] silence_start: 3279.93

我需要的是silence_start:之后的数字，我想将它们存储在一个数组中。我从来没有在windows中尝试过这一点，并且无法从批处理文件的命令行执行吗？任何帮助都会很好。我试图在沉默的时候把mp3切成碎片..。

更新的输出和测试文件的内容。首先，测试文件im从

ffmpeg version N-63968-g73d820e Copyright (c) 2000-2014 the FFmpeg developers
  built on Jun 15 2014 00:52:21 with gcc 4.8.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
  libavutil      52. 89.100 / 52. 89.100
  libavcodec     55. 66.101 / 55. 66.101
  libavformat    55. 43.100 / 55. 43.100
  libavdevice    55. 13.101 / 55. 13.101
  libavfilter     4.  8.100 /  4.  8.100
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 19.100 /  0. 19.100
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mp3, from 'mp.mp3':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6mp41
    encoder         : Lavf55.43.100
  Duration: 00:55:00.08, start: 0.025057, bitrate: 320 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
Output #0, null, to 'pipe:':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6mp41
    encoder         : Lavf55.43.100
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
    Metadata:
      encoder         : Lavc55.66.101 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (mp3 (native) -> pcm_s16le (pcm_s16le))
Press [q] to stop, [?] for help
[silencedetect @ 00000000042eb5c0] silence_start: -0.00260771
[silencedetect @ 00000000042eb5c0] silence_end: 0.601882 | silence_duration: 0.60449
size=N/A time=00:03:00.19 bitrate=N/A    
[silencedetect @ 00000000042eb5c0] silence_start: 310.019
[silencedetect @ 00000000042eb5c0] silence_end: 311.772 | silence_duration: 1.75388
size=N/A time=00:05:46.04 bitrate=N/A    
size=N/A time=00:08:28.29 bitrate=N/A    
size=N/A time=00:11:17.04 bitrate=N/A    
[silencedetect @ 00000000042eb5c0] silence_start: 822.097
[silencedetect @ 00000000042eb5c0] silence_end: 827.064 | silence_duration: 4.96694
size=N/A time=00:14:09.05 bitrate=N/A    
size=N/A time=00:16:46.36 bitrate=N/A    
size=N/A time=00:19:36.63 bitrate=N/A    
[silencedetect @ 00000000042eb5c0] silence_start: 1211.84
[silencedetect @ 00000000042eb5c0] silence_end: 1214.96 | silence_duration: 3.11224
size=N/A time=00:22:34.29 bitrate=N/A    
size=N/A time=00:25:28.00 bitrate=N/A    
[silencedetect @ 00000000042eb5c0] silence_start: 1605.72
[silencedetect @ 00000000042eb5c0] silence_end: 1610.21 | silence_duration: 4.49673
size=N/A time=00:28:29.95 bitrate=N/A    
size=N/A time=00:31:33.69 bitrate=N/A    
size=N/A time=00:34:28.03 bitrate=N/A    
size=N/A time=00:37:29.50 bitrate=N/A    
size=N/A time=00:40:09.74 bitrate=N/A    
[silencedetect @ 00000000042eb5c0] silence_start: 2443.7
[silencedetect @ 00000000042eb5c0] silence_end: 2445.32 | silence_duration: 1.62327
size=N/A time=00:43:07.09 bitrate=N/A    
size=N/A time=00:45:56.28 bitrate=N/A    
size=N/A time=00:48:43.67 bitrate=N/A    
[silencedetect @ 00000000042eb5c0] silence_start: 2946.45
[silencedetect @ 00000000042eb5c0] silence_end: 2953.51 | silence_duration: 7.05673
[silencedetect @ 00000000042eb5c0] silence_start: 2955.28
[silencedetect @ 00000000042eb5c0] silence_end: 2955.83 | silence_duration: 0.552245
size=N/A time=00:51:42.79 bitrate=N/A    
[silencedetect @ 00000000042eb5c0] silence_start: 3279.93
size=N/A time=00:54:45.44 bitrate=N/A    
size=N/A time=00:55:00.05 bitrate=N/A    

video:0kB audio:568485kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

接下来是我的批处理文件和Michaels示例。

@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
SET count=0
FOR /F "tokens=*" %%a IN ('findstr silence_start:* test.txt') DO (
    FOR /F "tokens=2 delims=:" %%b IN ("%%a") DO (
        SET number=%%b
        SET number=!number:~1!
        ECHO !number!
    )

)

从命令行运行测试命令

C:\Users\brett\Desktop\masterpuppets>findstr silence_start: test.txt
[silencedetect @ 00000000042eb5c0] silence_start: -0.00260771
[silencedetect @ 00000000042eb5c0] silence_start: 310.019
[silencedetect @ 00000000042eb5c0] silence_start: 822.097
[silencedetect @ 00000000042eb5c0] silence_start: 1211.84
[silencedetect @ 00000000042eb5c0] silence_start: 1605.72
[silencedetect @ 00000000042eb5c0] silence_start: 2443.7
[silencedetect @ 00000000042eb5c0] silence_start: 2946.45
[silencedetect @ 00000000042eb5c0] silence_start: 2955.28
[silencedetect @ 00000000042eb5c0] silence_start: 3279.93

来自mybat.bat的输出

C:\Users\brett\Desktop\masterpuppets>mybat.bat
-0.00260771
3
5
4
2
8
3
2955.28
1

Answer 1

要提取:背后的数字，这将起作用：

@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
SET count=0
FOR /F "tokens=*" %%a IN ('findstr silence_start:* testinput.txt') DO (
    FOR /F "delims=: tokens=2" %%b IN ("%%a") DO (
        SET number=%%b
        SET number=!number:~1!
        ECHO !number!
    )
)

但是，CMD /批处理中没有数组。有一个解决办法可以实现一些描述这里的数据结构，但它仍然很难看。相反，我会将提取的值存储在一个临时文本文件中。

Answer 2

您的FINDSTR搜索不是您所认为的那样-它是一个正则表达式，因此它查找"silent_start“后面的0或更多":”

我修改了您的搜索，以更准确，使用字符串文字搜索代替。

下面是一个纯粹的批处理解决方案。我将FINDSTR结果传输到第二个FINDSTR，在每行前面加上“行号”，作为“数组”计数器。

第二个FOR /F循环用于剥离前导空间。

@echo off
setlocal enableDelayedExpansion
:: Load the "array"
for /f "tokens=1,3 delims=:" %%A in (
  'findstr /c:"] silence_start: " test.txt ^| findstr /n "^"'
) do for /f "tokens=*" %%B in ("%%B") do (
  set "num.%%A=%%B
  set "num.cnt=%%A
)

:: List the "array" members
for /l %%N in (1 1 %num.cnt%) do echo num.%%N=!num.%%N!

使用我的JREPL.BAT正则表达式文本处理实用程序，代码更简单，效率更高。JREPL.BAT是纯脚本，从XP开始在任何Windows机器上本地运行。

/JBEG选项将计数器n初始化为0。/JMATCH将替换字符串视为JScript表达式。搜索将查找并捕获一个小数位数，并在"] silence_start：“后面加上可选的前导减号。替换表达式增加计数器，并用空格分隔符将该值与已找到的十进制数连接起来。

所以现在一个用于/F的单变量可以很容易地解析出计数器和十进制数。

@echo off
setlocal enableDelayedExpansion

:: Load the "array"
for /f "tokens=1,2" %%A in (
  'jrepl "] silence_start: (-?\d+\.\d+)" "++n + ' '+ $1" /jmatch /jbeg "n=0" /f "test.txt"'
) do (
  set "num.%%A=%%B"
  set "num.cnt=%%A"
)

:: List the "array" members
for /l %%N in (1 1 %num.cnt%) do echo num.%%N=!num.%%N!