c++ - Extract parameters from string, included quoted regions, in Qt -


I have a Qt5 / C ++ program which receives a program name and possibly a parameter with a parameter. I need to split this QString into multiple stars, for example, string 

  / tmp / myprog - at least 1 - prefix 2 = 2 - prefix 3 = "1 2 3 "- p 4

[2] = - param2 = 2 list [3] = - the ultimate 3 =" 1 2 3 "list [4] = - P4 < / Pre>

My first thought was to use the "partition" method on space, but it will be broken which will be broken up to the 3 which is cited. As the parameter 4 does not have: or between = -p and 4

Is there an easy way to do this? I suspect that it is impossible to split P4 easily because there is no way to know that 2 items get together at the same time.

But is there a division / reggae / other way for the above partition? (If we ignore the -p 4 then is it possible?)

Update:

Is the same function string split-without split or -p is? Therefore a string of 

  abc "aa" "bbb"

will be created 

  list [0] = [ 2] = "BBB" list [3] = c
text ">

Your task has two sides:

  1. Command line in arguments It is necessary to implement it with scratch.

  2. To process the arguments and the values ​​of their arguments from Qt 5.2, you can do this to QCommandLineParser . 

  #include & lt; QCoreApplication & gt; # Include & lt; QCommandLineParser & gt; #include & lt; QDebug & gt; Fixed QStringList splitCommandLine (ConstestString & CMDline) {QStringList list; QString arg; Bool escape = false; nim {idol, erg, quatated erg state} = Inactive; Forchha (QChar const C, CMD line) {If (! Escape & amp; C == '\\') {escape = true; Continue;} Switch (state) {Case Idol: If (! Escape Amp; C == '' '') state = quotedRG; otherwise (saved ||! C.isSpace ()) {arg + = c; State = Arg;} break; Case erg: if (! Escape and c == '' '') state = coated AR; And if (saved ||! CisSpace ()) arg + = c; Other {list & lt; & Lt; Arg; Arg.clear (); State = inactive; }             break; Case QuotedArg: (! Escape & amp; C == '' '') if state = arg.isEmpty () is disabled:?! Arg; Any other arg = c; Break;} escape = false;} if (arg.isEmpty ()) list is & lt; & Lt; Arg; Return list;} integer main (int argc, char * argv []) {QCoreApplication application (argc, argv); QCommandLineParser Parser; Parser.addHelpOption (); QCommandLineOption param1 ("param1"); QCommandLineOption param2 ("param2", "", "val2"); QCommandLineOption param3 ("param3", "", "val3"); QCommandLineOption param4 ("p", "", "val4"); Parser.addOption (param1); Parser.addOption (param2); Parser.addOption (param3); Parser.addOption (param4); If (true) {// a string QString cmdline ("parse / tmp / myprog --param1 --param2 = 2 \\ 2 --param3 = \" 1 2 3 \ "-p 4"); Parser.parse (splitCommandLine (cmdline)); else else // a command line this application parser.process (pars passed for the application);} if (parser.iset (param 1)) qDebug () & lt; & Lt; "Param1"; If (parser.iset (ultimate 2)) qDebug () & lt; & Lt; "Ultimate 2:" & lt; & Lt; Parser.value (param2); If (parser.iset (para3)) {Custostelist value = parser.value (Ultimate 3). Split ('', Caststring :: Public Displayparts); QDebug () & lt; & Lt; "Ultimate 3:" & lt; & Lt; Values; } If (parser.iset (parameter4)) qDebug () & lt; & Lt; "Param 4:" & lt; & Lt; Parser.value (param4); Return 0; }

Output: 

  param1 param2: "2 2" param 3: ("1", "2", "3") param4: 4 "

QDebug string outputs that quote string has no quotes.


-

Comments

Post a Comment

Popular posts from this blog

sqlite3 - UPDATE a table from the SELECT of another one -

I have the first table article where some data is missing. In the table, articles_tmp I have a part of the missing data. So I want to update the articles. Where the path path is data in articles_tmp.path where the path is not zero . With SQLite , it does not work: update article SET path = (SELECT at.path FROM Articles_tmp as AS, WHERE at.article_id = a.id and a.asp, the text is in the form and not on. It has been transmitted) where the path is null MS Access Along with, it works fine: Update Articles Join the Inner Articles at articles_tmp articles.id = articles_tmp.id SETP articles.path = articles_tmp.path Can anyone help? Sin CE SQL Server Syntax, which I provided, was not working, here this solution With whom I have come. A little modification of your original query, but with my "correlation" suggestion added. There is a SQL Bella for this: Here is the code: update article SET path = (SELECT path from articles_tmp AS T WHERE t.id
Read more

c# - Showing a SelectedItem's Property -

So I have enabled a rightclick option for my DataGrid. I want to display the only chosen property but it is not behaving like what I would like it to display my name and additional. Public category Paymentinfo {public int PaymentNo {get; Set; } Public string date {get; Set; } Public Double Pay {get; Set; } Public Double Principle {get; Set; } Public Double Interest {get; Set; } Public Double Balance {Received; Set; }} Private Zero MenuItem_OnClick (Object Sender, RoutedEventArgs e) {MessageBox.Show (AmortGrid.SelectedItem.ToString ()); } I'm trying to apply it without using a View Module! If I place a breakpoint where the messagebox and the recipient place it on selected ITEM, then this property will display the payment. A date-payment-principle-interest-balance is the only value that needs payment. Was hoping that it would be something like this MessageBox.Show (AmortGrid.SelectedItem.PaymentNo.ToString ()); When you call ToString () So you get the class typ
Read more

javascript - Render HTML after each iteration in loop -

I'm trying to gradually increase the font size of text on a web page. The code works in my place, although the new HTML / CSS does not render after every iteration of the loop and when all this is done, then display only the text of 100 px size. To see the text as if it is slowly zooming, I need to do this JavaScript is down because it is being used from a different file here is what I have ... < Pre> & lt; P class = "game-title" style = "font-size: 50px" & gt; Test & lt; / P & gt; Function sleep (milliseconds) {var start = new date (). GetTime (); For (var i = 0; i & lt; 1e7; i ++) {if ((new date). GetTime () - start) & gt; Milliseconds {break; CSS ('font-size', 'parseInt ($ (' game-title '). CSS (' font-size ')) + 1 + "pixels"); } While (parasont ($ ('# text'). Css ('font-size')) & lt; = 100) {sleep (1000); IncreaseSize (); Using CSS: Use of jQuery (sample):
Read more