如果CRLF出现在一行内，则用空格替换CRLF [英] Replacing CRLF with a blank space if it occurs within a line

问题描述

大家好，

我有一个简单的C＃程序，它将某些十六进制值替换为CSV文件中的空白区域。

我替换十六进制值的方式如下：

string value =\ x00;

value = Regex.Escape（value）;

stext = Regex.Replace（stext ，值，）;



我的问题是CSV文件可能包含同一行/记录/行中的多个CRLF。

有没有办法在它不在行尾时更换CRLF？

示例：

字段1 CRLF，字段2 CRLF，CRLF

- 有没有办法摆脱前两个CRLF？



谢谢！

Hello everyone,
I have a simple C# program that replaces certain hex values to an empty space in CSV files.
The way I replace hex values is as follows:
string value = "\x00";
value = Regex.Escape(value);
stext = Regex.Replace(stext, value, "");

My problem is a CSV file may contain multiple CRLFs within the same row/record/line.
Is there a way to replace a CRLF only if it is not at the end of line?
Example:
"field 1 CRLF","field 2 CRLF",CRLF
-- is there a way to get rid of the first two CRLFs?

thanks!

推荐答案

从技术上讲， CRLF 会终止一条线，因此你不能在一条线内。

但是如果你有一种识别字段的独特方式，你可以在你的文件中删除''spurious'' CRLF 。

例如，如果每条条信息必须包含两个字段，您可以清楚地从字段2中分离字段1 ，虚假的 CRLF 实际上是不相关的，你有办法丢弃它们。

Technically a CRLF terminates a line hence you cannot have it inside a line.
However you may remove ''spurious'' CRLF in you file if you have a unique way for identifying your fields.
For instance if every piece of info must contain two fields and you may clearly separate field 1 from field 2, the the spurious CRLF are in fact irrelevant and you have a way for discarding them.

As如果您正在读取该文件，则需要检查是否正在读取带引号的字符串内的字符（例如，指示您是否找到引号的布尔值），如果是，请保留某些字符，例如< cr>和字符串中的< lf> ;.

当你到达< cr>或者< lf>不在带引号的字符串中的字符，那么你可以说这是行/行/记录的结尾。然后字符串本身应该只包含你需要转换的字符。

我相信引号中的双引号表示引号，所以你也需要注意它。

问候，

Ian。

As you are reading the file in, you will need to check whether you are reading characters that are inside a quoted string (e.g. a boolean indicating whether you have found a quote mark) and if so, keep certain characters, such as <cr> and <lf>, in the string.
When you reach a <cr> or <lf> character that is not in a quoted string then you can say that is the end of line/row/record. The string itself should then only contain the characters which you need to convert.
I believe a quotation mark is indicated by a double quote within a quoted string, so you will need to pay attention for that also.
Regards,
Ian.

这篇关于如果CRLF出现在一行内，则用空格替换CRLF的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！