合并符合下一行，如果最后一个字符是使用批处理文件分号 [英] Merge line with the next line if last character is a semicolon using batch file
问题描述
我有以下4行的文件。
A;1;abc;<xml/>;
;2;def;<xml
>hello world</xml>;
;3;ghi;<xml/>;
使用批处理文件，我需要结合线，这样，如果该行不以分号结束（;）结束，下一行合并到当前行
Using the batch file, I need to combine lines such that if the line doesn't end end with a semicolon (;), combine the next line into the current line.
因此所需的输出应
A;1;abc;<xml/>;
;2;def;<xml>hello world</xml>;
;3;ghi;<xml/>;
我不是很熟悉批处理脚本，但使用尝试 FOR / F ，但至今没有运气。
据我所知，逻辑应检查的最后一个字符的每一行中，如果它不是一个分号，读取下一行成当前行
As I understand, the logic should be to check the last character for each line, if it is not a semicolon, read the next line into current line.
继此，我设法让该行的最后一个字符，但我的脚本只读取，如果它不存在与线; 。任何想法？
Further to this, I managed to get the last character of the line but my script only reads the line if it doesn't being with ; . Any ideas?
@echo off
for /f "tokens=*" %%i in (myfile.txt) do (
set var=%%i
echo %%i
if "%var:~-1%"==";" (
echo test
)
)
注：上面的查询只读取线1和3
Note: the above query only reads line 1 and 3.
推荐答案
您有许多与你的code问题：）
You have a number of problems with your code :)
1）正如您所说，您的code忽略以开头的行; - 这是由于默认FOR / F EOL选项。但是你的code也去掉，因为标记= *的每一行前导空格。您需要设置两个EOL和DELIMS不了了之。语法怪异，但它的工作原理：
1) As you have stated, your code ignores lines that begin with ; - This is due to the default FOR /F EOL option. But your code also strips leading spaces from each line because of "TOKENS=*". You need to set both EOL and DELIMS to nothing. The syntax is weird, but it works:
for /f delims^=^ eol^= %%i ...
2）您尝试设置和code的一个组合块内扩大变种。这可不行，因为当行被解析出现扩张，code的整个区块一次被解析。因此，％VAR％的价值在于执行循环之前存在的价值。当然不是你想要的。解决的办法是使用延迟扩展。键入 FOR /？从有关延迟扩展更多信息的命令提示符（约一半时帮助上市）
2) You attempt to set and expand var within a parenthesized block of code. This cannot work because expansion occurs when the line is parsed, and the entire block of code is parsed at once. So the value of %var% is the value that existed prior to the loop executing. Of course not what you want. The solution is to use delayed expansion. Type FOR /? from a command prompt for more information about delayed expansion (about half way down the help listing)
3）对于含有可变内容！将如果延迟扩展时启用扩展损坏。解决的办法是在切换，并根据需要在循环中关延迟扩展。但是，这会导致复杂，因为需要日益行的值是在整个ENDLOCAL屏障pserved $ P $。我用FOR / F运输跨越障碍的价值。
3) For variable content containing ! will be corrupted if it is expanded when delayed expansion is enabled. The solution is to toggle delayed expansion on and off as needed within the loop. But that causes a complication because you need the value of the growing line to be preserved across the ENDLOCAL barrier. I use a FOR /F to transport the value across the barrier.
下面是一个完整的批处理脚本应该做的工作。它被限制的，因为它不能处理比的〜8191字节的最大长度大于线
Here is a complete batch script that should do the job. It is limited in that it cannot process lines that are greater than the max length of ~8191 bytes.
这code已被重新写入修复显著错误的
This code has been re-written to fix a significant bug
@echo off
setlocal disableDelayedExpansion
set "ln="
set "print=0"
for /f delims^=^ eol^= %%i in (myfile.txt) do (
set "var=%%i"
setlocal enableDelayedExpansion
for /f delims^=^ eol^= %%A in ("!ln!!var!") do (
if "!var:~-1!"==";" (
endlocal
echo %%A
set "ln="
) else (
endlocal
set "ln=%%A"
)
)
)
SET / p解决方案
有一个可以立即打印出的每一行，这样你就不必担心跨ENDLOCAL运送可变更为简单的解决方案。不以结束行;打印不使用SET / p换行
There is a much simpler solution that prints each line immediately so that you don't have to worry about transporting a variable across ENDLOCAL. Lines that don't end with ; are printed without newlines using SET /P.
此溶液具有以下限制：
1），通过设置打印的行/普将拥有领先的空格去掉。这种限制仅适用于Vista和Windows的新版本。这不是在XP上的一个问题。
1) Lines printed via SET /P will have leading spaces stripped. This limitation is only for Vista and newer versions of Windows. It is not a problem on XP.
2）感谢David Ruhmann，我现在知道，SET /如果符合 = 开始普会失败。非常不幸的：（
2) Thanks to David Ruhmann, I now know that SET /P will fail if the line begins with =. Very unfortunate :(
@echo off
setlocal disableDelayedExpansion
set "ln="
for /f delims^=^ eol^= %%i in (myfile.txt) do (
set "var=%%i"
setlocal enableDelayedExpansion
if "!var:~-1!"==";" (echo !var!) else (<nul set /p ="!var!")
endlocal
)
混合批次/ JScript的正则表达式的解决方案（防弹？）
我写了一个混合批次/ JScript中REPL.BAT实用程序，可轻松的正则表达式搜索和文件的内容替换。它使这项工作很容易。
I've written a hybrid batch/JScript REPL.BAT utility that allows for easy regex search and replace on file contents. It makes the job really easy.
下面的命令应该在任何输入工作，不受任何限制。它已被更新为同时支持Windows和Unix风格的线条。而且它比纯一批解决方案快得多。
The following command should work on any input, without limitations. It has been updated to support both Windows and Unix style lines. And it is much faster than a pure batch solution.
findstr "^." myfile.txt|repl "([^;\r])\r?\n" "$1" m >"outFile.txt"
下面是REPL.BAT工具。完整的文档嵌入的脚本中。
Here is the REPL.BAT utility. Full documentation is embedded within the script.
@if (@X)==(@Y) @end /* Harmless hybrid line that begins a JScript comment
::************ Documentation ***********
:::
:::REPL Search Replace [Options [SourceVar]]
:::REPL /?
:::
::: Performs a global search and replace operation on each line of input from
::: stdin and prints the result to stdout.
:::
::: Each parameter may be optionally enclosed by double quotes. The double
::: quotes are not considered part of the argument. The quotes are required
::: if the parameter contains a batch token delimiter like space, tab, comma,
::: semicolon. The quotes should also be used if the argument contains a
::: batch special character like &, |, etc. so that the special character
::: does not need to be escaped with ^.
:::
::: If called with a single argument of /? then prints help documentation
::: to stdout.
:::
::: Search - By default this is a case sensitive JScript (ECMA) regular
::: expression expressed as a string.
:::
::: JScript syntax documentation is available at
::: http://msdn.microsoft.com/en-us/library/ae5bf541(v=vs.80).aspx
:::
::: Replace - By default this is the string to be used as a replacement for
::: each found search expression. Full support is provided for
::: substituion patterns available to the JScript replace method.
::: A $ literal can be escaped as $$. An empty replacement string
::: must be represented as "".
:::
::: Replace substitution pattern syntax is documented at
::: http://msdn.microsoft.com/en-US/library/efy6s3e6(v=vs.80).aspx
:::
::: Options - An optional string of characters used to alter the behavior
::: of REPL. The option characters are case insensitive, and may
::: appear in any order.
:::
::: I - Makes the search case-insensitive.
:::
::: L - The Search is treated as a string literal instead of a
::: regular expression. Also, all $ found in Replace are
::: treated as $ literals.
:::
::: E - Search and Replace represent the name of environment
::: variables that contain the respective values. An undefined
::: variable is treated as an empty string.
:::
::: M - Multi-line mode. The entire contents of stdin is read and
::: processed in one pass instead of line by line. ^ anchors
::: the beginning of a line and $ anchors the end of a line.
:::
::: X - Enables extended substitution pattern syntax with support
::: for the following escape sequences:
:::
::: \\ - Backslash
::: \b - Backspace
::: \f - Formfeed
::: \n - Newline
::: \r - Carriage Return
::: \t - Horizontal Tab
::: \v - Vertical Tab
::: \xnn - Ascii (Latin 1) character expressed as 2 hex digits
::: \unnnn - Unicode character expressed as 4 hex digits
:::
::: Escape sequences are supported even when the L option is used.
:::
::: S - The source is read from an environment variable instead of
::: from stdin. The name of the source environment variable is
::: specified in the next argument after the option string.
:::
::************ Batch portion ***********
@echo off
if .%2 equ . (
if "%~1" equ "/?" (
findstr "^:::" "%~f0" | cscript //E:JScript //nologo "%~f0" "^:::" ""
exit /b 0
) else (
call :err "Insufficient arguments"
exit /b 1
)
)
echo(%~3|findstr /i "[^SMILEX]" >nul && (
call :err "Invalid option(s)"
exit /b 1
)
cscript //E:JScript //nologo "%~f0" %*
exit /b 0
:err
>&2 echo ERROR: %~1. Use REPL /? to get help.
exit /b
************* JScript portion **********/
var env=WScript.CreateObject("WScript.Shell").Environment("Process");
var args=WScript.Arguments;
var search=args.Item(0);
var replace=args.Item(1);
var options="g";
if (args.length>2) {
options+=args.Item(2).toLowerCase();
}
var multi=(options.indexOf("m")>=0);
var srcVar=(options.indexOf("s")>=0);
if (srcVar) {
options=options.replace(/s/g,"");
}
if (options.indexOf("e")>=0) {
options=options.replace(/e/g,"");
search=env(search);
replace=env(replace);
}
if (options.indexOf("l")>=0) {
options=options.replace(/l/g,"");
search=search.replace(/([.^$*+?()[{\\|])/g,"\\$1");
replace=replace.replace(/\$/g,"$$$$");
}
if (options.indexOf("x")>=0) {
options=options.replace(/x/g,"");
replace=replace.replace(/\\\\/g,"\\B");
replace=replace.replace(/\\b/g,"\b");
replace=replace.replace(/\\f/g,"\f");
replace=replace.replace(/\\n/g,"\n");
replace=replace.replace(/\\r/g,"\r");
replace=replace.replace(/\\t/g,"\t");
replace=replace.replace(/\\v/g,"\v");
replace=replace.replace(/\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4}/g,
function($0,$1,$2){
return String.fromCharCode(parseInt("0x"+$0.substring(2)));
}
);
replace=replace.replace(/\\B/g,"\\");
}
var search=new RegExp(search,options);
if (srcVar) {
WScript.Stdout.Write(env(args.Item(3)).replace(search,replace));
} else {
while (!WScript.StdIn.AtEndOfStream) {
if (multi) {
WScript.Stdout.Write(WScript.StdIn.ReadAll().replace(search,replace));
} else {
WScript.Stdout.WriteLine(WScript.StdIn.ReadLine().replace(search,replace));
}
}
}
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