[文本处理] 【已解决】批处理怎样利用set替换掉文件中特定的内容

sniperhgy

看了一些高手的帖子，学着写了一个比较简单的，内容如下：

@echo off&setlocal enabledelayedexpansion
(for /f "eol= tokens=1,* delims=:" %%a in ('findstr /n .* test.ini') do (
    set "line=%%b"
    if "%line%" NEQ "" (set "line=!line:192.168.118.16=192.168.118.25!")
    echo.!line!
))>haha.ini
复制代码

我的本意是空行的话（这里的空行指line.trim() == ""，也就是允许有空格的），就跳过
然后发现行内有192.168.118.16，就替换成192.168.118.25，运行后不成功，估计是
if "%line%" NEQ ""这句有问题，或者是set的用法不对，麻烦知道的朋友指点一下，谢谢了

[ 本帖最后由 sniperhgy 于 2009-5-11 13:16 编辑 ]

Batcher

把%line%改成!line!

sniperhgy

^_^可以了，谢谢Batcher,不过这是为什么呢？
还有一点，我的文件中有一行是13个空格，如果我是想将空行（允许有空格）都写上
“次行为空”，要怎样做呢？批处理里面有类似string.trim()的方法吗？

Batcher

1、可能你对变量延迟扩展的理解还有点问题，请参考：批处理中的变量延迟扩展、变量嵌套
http://bbs.bathome.net/viewthread.php?tid=2899

2、看不懂你的问题，请把原始的ini文件内容和想要修改成啥样贴出来看看。

sniperhgy

ini文件内容：

;no$gba 2.6 generated config file - do not edit
                                      
GBA Mode == Nintendo DS (in GBA mode)
NDS Mode == Nintendo DS (normal 4MB)
Emulation Speed, LCD Refresh == -Realtime, Auto
Reset/Startup Entrypoint == GBA BIOS (Nintendo logo)
Topmost Display Lines == -Display Normal
Sound Output Mode == None (fastest)
Sound Desired Sample Rate == Low (10kHz) (fast)
Video Output == 15bit Color
Emulate BIOS Functions == By real GBA.ROM (accurate)
Solar Sensor Level == Darkness
GBA Cartridge Backup Media == -Auto
NDS-Cartridge Backup Media == -Auto
Multiboot Port == -None/Disabled
Multiboot Completion == -Auto-close Upload Box
Multiboot Normal/BurstDelays == -Medium/Medium (stable)
Game Screen Filter == None (fast)
Decompressed Help File == Delete after Usage
Create Game Window at == Upper/right of Debug Window
Game Screen Sizing == Strict
IIgame_size == normal
Number of Emulated Gameboys == -Single Machine
Link Gamepaks == -Gamepaks in all GBAs
Link Cable Type == -Automatic
Performance Indicator == -Show Timing only if <>100%
Autosave Options == -Nope
Load ROM-Images to == -All machines

Joypad Button A == 1
Joypad Button B == 2
Joypad Select == 3
Joypad Start == 4
Joypad Button L == 5
Joypad Button R == 6
Joypad Button X == 7
Joypad Button Y == 8
SNESpad Adapter == -None/Disabled (fast)
SNESpad Button A == -Button A
SNESpad Button B == -Button B
SNESpad Button X == -Button X
SNESpad Button Y == -Button Y
Mouse Control Mode == -Free Move (right button=on)
Joysticks/Gamepads == -Enabled

IP=192.168.118.163

SAV/SNA File Format == Compressed
IIautoRun == yes
Firmware Boot == Manual
3D Renderer == nocash
IIsnd == stereo
IIreg == show
IIcrk == show

gdb_xsiz == 00000000
gdb_ysiz == 00000000
cht_xsiz == 00000000
cht_ysiz == 00000000
Game_xloc == 00000235
Game_yloc == 0000015F
Game_xsiz == 000109D9
Game_ysiz == 000109CC

KEYB_1 == 111F1E202524222318261716
KEYB_2 == A1A9A4A65253517526135959
KEYB_3 == 595959595959590259595959
KEYB_4 == 595959595959590359595959
KEYB_5 == 595959595959590459595959
KEYB_6 == 595959595959590559595959
KEYB_7 == 595959595959590659595959
KEYB_8 == 595959595959590759595959
KEYB_9 == 595959595959590859595959
KEYB_A == 595959595959590959595959
KEYB_B == 595959595959590A59595959
KEYB_C == 595959595959590B59595959

GIFname == NO$GBA.GIF
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文件中，有些空行就是一个"",而第二行，是38个空格
我就是想无论是""，还是"若干个空格"，都替换成
“次行为空”，现在的问题就是，有什么办法，可以判断
某一行是否为""或者"若干个空格"

Batcher

@echo off&setlocal enabledelayedexpansion
(for /f "tokens=1,* delims=:" %%a in ('findstr /n .* test.ini') do (
  set "line=%%b"
  if "!line!" NEQ "" (
    set lineblank=!line: =!
    if "!lineblank!" NEQ "" (
      set "line=!line:192.168.118.16=192.168.118.25!"
      echo/!line!
    ) else (
      echo/
    )
  ) else (
    echo/
  )
))>haha.ini
复制代码

注意：安装你的思路，192.168.118.163会被替换成192.168.118.253，请确认一下这是不是你想要的结果。

[ 本帖最后由 Batcher 于 2009-5-11 17:00 编辑 ]

netbenton

还有个方法：
在红色部分的冒号后面加一个空格就可以在遇到只有空格行时让%%b为空了


for /f "tokens=1,* delims=: " %%a in ('findstr /n .* test.ini') do (

sniperhgy

哦，謝謝樓上兩位指點，方法已經習得