问题
This is in continuation with post - String split with specified string without delimeter
Use case #1: When searchedText is beginning / or in the end of the (watch) , if fragments value is empty I replace with searchText and it works
string watch = "Arrests as cops bust $100m money-laundering gang";
string searchedText = "Arrests as cops bust $100m";
string[] fragments = watch.Split(new string[] { searchedText }, StringSplitOptions.None);
Use case #2: when searchedText is in between of the (watch), how to deal with this scenario in below code?
//This loop will execute only two times because it can have maximum 2 values, issue will
//come when searched value is in middle (loop should run 3 times) as for the searched value I have to apply different logic (like change background color of the text)
// and don't change background color for head and tail
// How do I insert searched value in middle of [0] and [1] ??
string watch = "Arrests as cops bust $100m money-laundering gang";
string searchedText = "cops bust";
Complete code:
foreach (SharedStringItem sharedString in sharedStrings)
{
string innerText = sharedString.InnerText; // This contains complete line (watch)
if (innerText.IndexOf(searchText, StringComparison.OrdinalIgnoreCase) >= 0)
{
sharedString.RemoveAllChildren(); // Remove complete line from spreadsheet because we have to make it again as searched text needs to be highlighted
// Split the line so it will give blank for searched text and remaining line
string[] fragments = innerText.Split(new string[] { searchText }, StringSplitOptions.None);
// loop through both words/line
foreach (var item in fragments)
{
DocumentFormat.OpenXml.Spreadsheet.Text text = null;
// If item is blank append the search text else append the remaining line /word
if(string.IsNullOrEmpty(item))
text = new DocumentFormat.OpenXml.Spreadsheet.Text((item != "" ? " " : String.Empty) + searchText);
else
text = new DocumentFormat.OpenXml.Spreadsheet.Text((item != "" ? " " : String.Empty) + item);
text.Space = SpaceProcessingModeValues.Preserve;
// New Run needs to be created for each splitted line/word, run is like a row in spreadsheet
// You cannot create a single run because you need to take care of searched text as it needs to be highlighted before adding to the row
Run run = new Run();
run.Append(text);
// This code should only be executed for searched text
if (searchText.Equals(text.InnerText, StringComparison.Ordinal))
{
if (run.RunProperties == null)
run.RunProperties = new RunProperties();
run.RunProperties.Append(new Color { Rgb = "008000" });
run.RunProperties.Append(new DocumentFormat.OpenXml.Spreadsheet.Bold());
}
// This line add individual run (Example -> Arrests as + <highlight searched text> + remaining text
sharedString.Append(run);
}
}
}
Case : It does not work
seachedText = merrylands
watch = "httdailytelegraph.com.au/newslocal/parramatta/trio-charged-over-alleged-100m-money-laundering-syndicate-at-merrylands-guildford-west/news-story/92ba3163ce58ad8b49989131fa7a5d8e"
回答1:
Updated : You can try this
string text = "Trio charged over alleged $100m money laundering syndicate at Merrylands, Guildford West";
string searchtext = "charged over";
searchtextPattern = "(?=" + Regex.Escape(searchtext) + ")";
string[] fragments= Regex.Split(text, searchtextPattern);
//fargments will have two elements here
// fragments[0] - "Trio"
// fragments[1] - "charged over alleged $100m money laundering syndicate at Merrylands, Guildford West"
now you can again split fragment which have search text i.e fragments1 in this case. see code below
var stringWithoutSearchText = fragments[1].Replace(searchtext, string.Empty);
you need to check whether each fragment contains search text or not. You can do that it your foreach loop on fragments. add below check over there
foreach (var item in fragments)
{
if (item.Contains(searchtext))
{
string stringWithoutSearchText = item.Replace(searchtext, string.Empty);
}
}
I tried to fit it into your code. You can try something like this
foreach (SharedStringItem sharedString in sharedStrings)
{
string innerText = sharedString.InnerText; // This contains complete line (watch)
if (innerText.IndexOf(searchText, StringComparison.OrdinalIgnoreCase) >= 0)
{
sharedString.RemoveAllChildren(); // Remove complete line from spreadsheet because we have to make it again as searched text needs to be highlighted
// Split the line so it will give blank for searched text and remaining line
var searchtextPattern = "(?=" + Regex.Escape(searchText) + ")";
string[] fragments = Regex.Split(innerText, searchtextPattern);
// loop through both words/line
foreach (var item in fragments)
{
if (!string.IsNullOrEmpty(item))
{
//It will check whether the item contains search string or not
if (item.Contains(searchtext))
{
// now GetRun() method called two times here
string stringWithoutSearchText = item.Replace(searchtext, string.Empty);
// in your example method argument will be "charged over"
var run = GetRun(new DocumentFormat.OpenXml.Spreadsheet.Text(" " + searchtext));
//this code will only execute for search text
if (run.RunProperties == null)
run.RunProperties = new RunProperties();
run.RunProperties.Append(new Color { Rgb = "008000" });
run.RunProperties.Append(new DocumentFormat.OpenXml.Spreadsheet.Bold());
sharedString.Append(run);
// in your example method argument will be "alleged $100m money laundering syndicate at Merrylands, Guildford West"
if (!string.IsNullOrEmpty(stringWithoutSearchText))
sharedString.Append(GetRun(new DocumentFormat.OpenXml.Spreadsheet.Text(" " + stringWithoutSearchText)));
}
else
{
//in your example method argument "will be Trio"
sharedString.Append(GetRun(new DocumentFormat.OpenXml.Spreadsheet.Text(" " + item)));
}
}
}
}
}
your GetRun Method will be like this
private Run GetRun(DocumentFormat.OpenXml.Spreadsheet.Text text)
{
text.Space = SpaceProcessingModeValues.Preserve;
// New Run needs to be created for each splitted line/word, run is like a row in spreadsheet
// You cannot create a single run because you need to take care of searched text as it needs to be highlighted before adding to the row
Run run = new Run();
run.Append(text);
return run;
}
case 2:
//if search text is at end
string watch = "Bitcoin ATMs Highlight Flaws in EU Money Laundering Rules";
string searchtext = "Money Laundering Rules";
//fragment of above string by using Regex.Split will be like
// fragments[0] - "Bitcoin ATMs Highlight Flaws in EU"
// fragments[1] - "Money Laundering Rules"
case 3:
//if search text is at start
string watch = "Money Laundering Rules Bitcoin ATMs Highlight Flaws in EU";
string searchtext = "Money Laundering Rules";
//fragment of above string by using Regex.Split will be like
// fragments[0] - ""
// fragments[1] - "Money Laundering Rules Bitcoin ATMs Highlight Flaws in EU"
check these three cases in the above code
Reference : https://stackoverflow.com/a/521172/8652887
来源：https://stackoverflow.com/questions/61416510/string-split-with-specified-string-without-delimiter-with-text-in-middle