I have to show/enable a bunch of dialog items in an MFC application. They all have names like IDC_EDIT_CHANNEL1_x, where x is an int value from 0 to 15. The IDs from the resource file are not ordered so I want to get the items by that string.
Is it possible to get the resourceId named IDC_EDIT_CHANNEL1_1, from a string "IDC_EDIT_CHANNEL1_1"?
As you all know GetDlgItem() only works with int values.
The problem you don't see is that the preprocessor replaces IDC_EDIT_CHANNEL1_x with an integer at compile time. This is a macro, not a string.
So your application never "sees" a string. The string has been substituted by the preprocessor before the source code reaches the compiler.
My advice is to use consecutive IDs. I don't know why you don't want to do that, but it will probably be the quickest and most straightforward way to solve your problem.
The other way is to not use macros at all. The resource editor can use strings, and if the preprocessor doesn't replace them with ints, that's what will be used. You can filter them by string then.
Related
I am working with a messy manually maintained "database" that has a column containing a string with name,value pairs. I am trying to parse the entire column with regexp to pull out the values. The column is huge (>100,000 entries). As a proxy for my actual data, let's use this code:
line1={'''thing1'': ''-583'', ''thing2'': ''245'', ''thing3'': ''246'', ''morestuff'':, '''''};
line2={'''thing1'': ''617'', ''thing2'': ''239'', ''morestuff'':, '''''};
line3={'''thing1'': ''unexpected_string(with)parens5'', ''thing2'': 245, ''thing3'':''246'', ''morestuff'':, '''''};
mycell=vertcat(line1,line2,line3);
This captures the general issues encountered in the database. I want to extract what thing1, thing2, and thing3 are in each line using cellfun to output a scalar cell array. They should normally be 3 digit numbers, but sometimes they have an unexpected form. Sometimes thing3 is completely missing, without the name even showing up in the line. Sometimes there are minor formatting inconsistencies, like single quotes missing around the value, spaces missing, or dashes showing up in front of the three digit value. I have managed to handle all of these, except for the case where thing3 is completely missing.
My general approach has been to use expressions like this:
expr1='(?<=thing1''):\s?''?-?([\w\d().]*?)''?,';
expr2='(?<=thing2''):\s?''?-?([\w\d().]*?)''?,';
expr3='(?<=thing3''):\s?''?-?([\w\d().]*?)''?,';
This looks behind for thingX' and then tries to match : followed by zero or one spaces, followed by 0 or 1 single quote, followed by zero or one dash, followed by any combination of letters, numbers, parentheses, or periods (this is defined as the token), using a lazy match, until zero or one single quote is encountered, followed by a comma. I call regexp as regexp(___,'tokens','once') to return the matching token.
The problem is that when there is no match, regexp returns an empty array. This prevents me from using, say,
out=cellfun(#(x) regexp(x,expr3,'tokens','once'),mycell);
unless I call it with 'UniformOutput',false. The problem with that is twofold. First, I need to then manually find the rows where there was no match. For example, I can do this:
emptyout=cellfun(#(x) isempty(x),out);
emptyID=find(emptyout);
backfill=cell(length(emptyID),1);
[backfill{:}]=deal('Unknown');
out(emptyID)=backfill;
In this example, emptyID has a length of 1 so this code is overkill. But I believe this is the correct way to generalize for when it is longer. This code will change every empty cell array in out with the string Unknown. But this leads to the second problem. I've now got a 'messy' cell array of non-scalar values. I cannot, for example, check unique(out) as a result.
Pardon the long-windedness but I wanted to give a clear example of the problem. Now my actual question is in a few parts:
Is there a way to accomplish what I'm trying to do without using 'UniformOutput',false? For example, is there a way to have regexp pass a custom string if there is no match (e.g. pass 'Unknown' if there is no match)? I can think of one 'cheat', which would be to use the | operator in the expression, and if the first token is not matched, look for something that is ALWAYS found. I would then still need to double back through the output and change every instance of that result to 'Unknown'.
If I take the 'UniformOutput',false approach, how can I recover a scalar cell array at the end to easily manipulate it (e.g. pass it through unique)? I will admit I'm not 100% clear on scalar vs nonscalar cell arrays.
If there is some overall different approach that I'm not thinking of, I'm also open to it.
Tangential to the main question, I also tried using a single expression to run regexp using 3 tokens to pull out the values of thing1, thing2, and thing3 in one pass. This seems to require 'UniformOutput',false even when there are no empty results from regexp. I'm not sure how to get a scalar cell array using this approach (e.g. an Nx1 cell array where each cell is a 3x1 cell).
At the end of the day, I want to build a table using these results:
mytable=table(out1,out2,out3);
Edit: Using celldisp sheds some light on the problem:
celldisp(out)
out{1}{1} =
246
out{2} =
Unknown
out{3}{1} =
246
I assume that I need to change the structure of out so that the contents of out{1}{1} and out{3}{1} are instead just out{1} and out{3}. But I'm not sure how to accomplish this if I need 'UniformOutput',false.
Note: I've not used MATLAB and this doesn't answer the "efficient" aspect, but...
How about forcing there to always be a match?
Just thinking about you really wanting a match to skip this problem, how about an empty match?
Looking on the MATLAB help page here I can see a 'emptymatch' option, perhaps this is something to try.
E.g.
the_thing_i_want_to_find|
Match "the_thing_i_want_to_find" or an empty match, note the | character.
In capture group it might look like this:
(the_thing_i_want_to_find|)
As a workaround, I have found that using regexprep can be used to find entries where thing3 is missing. For example:
replace='$1 ''thing3'': ''Unknown'', ''morestuff''';
missingexpr='(?<=thing2'':\s?)(''?-?[\w\d().]*?''?,) ''morestuff''';
regexprep(mycell{2},missingexpr,replace)
ans =
''thing1': '617', 'thing2': '239', 'thing3': 'Unknown', 'morestuff':, '''
Applying it to the entire array:
fixedcell=cellfun(#(x) regexprep(x,missingexpr,replace),mycell);
out=cellfun(#(x) regexp(x,expr3,'tokens','once'),fixedcell,'UniformOutput',false);
This feels a little roundabout, but it works.
cellfun can be replaced with a plain old for loop. Your code will either be equally fast, or maybe even faster. cellfun is implemented with a loop anyway, there is no advantage of using it other than fewer lines of code. In your explicit loop, you can then check the output of regexp, and build your output array any way you like.
Let's say I have the following strings:
"This [color=RGB]is[\color] a string."
"This [color=RGB][bold]is[\bold][\color] another string."
What I'm looking for is a good way to parse the string in order to extract the tag information and then reconstruct the original string without tags.
The tag informations will be used during text rendering.
Obviously I can achieve the goal by working directly with strings (find/substr/replace and so on), but I'm asking if there is another way cleaner, for example using regular expression.
Note:
There are very few tags I need, but there is the possibility to nest them (only of different type).
Can't use Boost.
There's a very simple answer that might work, depending on the complexity of your strings. (And me understanding you correctly, i.e. you just want to get the cleaned up strings, not actually extract the tags.) Just remove all tags. Replace
\[.*?]
with nothing. Example here
Now, if your string should be able to contain tag-like objects this might not work.
Regards
I have looked at multiple solutions here for similar tasks, and tried them in different ways.
Essentially, I have a cells with long, somewhat similar strings of text, and I want to isolate specific text markers in order to be able to split on those markers. The specific string I am looking for is "MHPP" and I want to replace it with "][MHPP " so I can used the split function to split on the "]".
I was able to get it to work by manually Finding and Replacing (CTRL+F and selecting parameters for the replace), but I want to be able to script it because I won't be the one running the script and need to simplify the process for low-information users.
Using =replace(find("MHPP"),7,"][MHPP ") only finds the first instance of the find value, and there may be multiple usages of the term throughout the cell.
Any suggestions? I suppose there might be a way to write the cell to a string, and replace within the array, but the logic of that process is escaping me at the moment.
I'm not asking for the entire code. I can activate the sheet, get the range, and work from there, but I just don't know how to write the specific function findAndReplace() that would actually locate all repetitions of the string and replace them all.
I'm also open to importing the .csv into a different format, running a function there, and returning it back out to a .csv, but that hasn't proven to be very fruitful either in my searches.
Thanks for any guidance you can offer to get me on the right path.
You can use the replace string function on every cell in a global iteration of your sheet, do that at array level to keep it fast and simple.
The code itself can be very short and straightforward like this :
function myFunction() {
var sh = SpreadsheetApp.getActive();
var data = sh.getDataRange().getValues();// get all data
for(var n=0;n<data.length;n++){
for(var m=0;m<data[0].length;m++){
if(typeof(data[n][m])=='string'){ // if it is a string
data[n][m]=data[n][m].replace(/MHPP/g,'][MHPP');// use the regex replace with /g parameter meaning "globally"
}
}
}
sh.getDataRange().setValues(data);// update sheet values
}
This could be improved to take care of certain situations where the script would be executed twice (or more) to prevent replacement if '][' is already present... I'll let you manage these details.
I need to know the direction of my text before printing.
I'm using Unicode Characters.
How can I do that in C++?
If you don't want to use ICU, you can always manually parse the unicode database (.e.g., with a python script). It's a semicolon-separated text file, with each line representing a character code point. Look for the fifth record in each line - that's the character class. If it's R or AL, you have an RTL character, and 'L' is an LTR character. Other classes are weak or neutral types (like numerals), which I guess you'd want to ignore. Using that info, you can generate a lookup table of all RTL characters and then use it in your C++ code. If you really care about code size, you can minimize the size the lookup table takes in your code by using ranges (instead of an entry for each character), since most characters come in blocks of their BiDi class.
Now, define a function called GetCharDirection(wchar_t ch) which returns an enum value (say: Dir_LTR, Dir_RTL or Dir_Neutral) by checking the lookup table.
Now you can define a function GetStringDirection(const wchar_t*) which runs through all characters in the string until it encounters a character which is not Dir_Neutral. This first non-neutral character in the string should set the base direction for that string. Or at least that's how ICU seems to work.
You could use the ICU library, which has a functions for that (ubidi_getDirection ubidi_getBaseDirection).
The size of ICU can be reduced, by recompiling the data library (which is normally about 15MB big), to include only the converters/locals which are needed for the project.
The section Reducing the Size of ICU's Data: Conversion Tables of the site http://userguide.icu-project.org/icudata, contains information how you can reduce the size of the data library.
If only need support for the most common encodings (US-ASCII, ISO-8859-1, UTF-7/8/16/32, SCSU, BOCU-1, CESU-8), the data library wont be needed anyway.
From Boaz Yaniv said before, maybe something like this will easier and faster than parsing the whole file:
int aft_isrtl(int c){
if (
(c==0x05BE)||(c==0x05C0)||(c==0x05C3)||(c==0x05C6)||
((c>=0x05D0)&&(c<=0x05F4))||
(c==0x0608)||(c==0x060B)||(c==0x060D)||
((c>=0x061B)&&(c<=0x064A))||
((c>=0x066D)&&(c<=0x066F))||
((c>=0x0671)&&(c<=0x06D5))||
((c>=0x06E5)&&(c<=0x06E6))||
((c>=0x06EE)&&(c<=0x06EF))||
((c>=0x06FA)&&(c<=0x0710))||
((c>=0x0712)&&(c<=0x072F))||
((c>=0x074D)&&(c<=0x07A5))||
((c>=0x07B1)&&(c<=0x07EA))||
((c>=0x07F4)&&(c<=0x07F5))||
((c>=0x07FA)&&(c<=0x0815))||
(c==0x081A)||(c==0x0824)||(c==0x0828)||
((c>=0x0830)&&(c<=0x0858))||
((c>=0x085E)&&(c<=0x08AC))||
(c==0x200F)||(c==0xFB1D)||
((c>=0xFB1F)&&(c<=0xFB28))||
((c>=0xFB2A)&&(c<=0xFD3D))||
((c>=0xFD50)&&(c<=0xFDFC))||
((c>=0xFE70)&&(c<=0xFEFC))||
((c>=0x10800)&&(c<=0x1091B))||
((c>=0x10920)&&(c<=0x10A00))||
((c>=0x10A10)&&(c<=0x10A33))||
((c>=0x10A40)&&(c<=0x10B35))||
((c>=0x10B40)&&(c<=0x10C48))||
((c>=0x1EE00)&&(c<=0x1EEBB))
) return 1;
return 0;
}
If you are using Windows GDI, it would seem that GetFontLanguageInfo(HDC) returns a DWORD; if GCP_REORDER is set, the language requires reordering for display, for example, Hebrew or Arabic.
I'm writing a (Win32 Console) program that wraps another process; it takes parameters as in the following example:
runas.exe user notepad foo.txt
That is: runas parses user and then will run notepad, passing the remaining parameters.
My problem is that argv is broken down into individual parameters, but CreateProcessAsUser requires a single lpszCommandLine parameter.
Building this command line is probably not as simple as just joining argv back together with spaces. Any pointers?
This is just an example. My first argument isn't actually a user name, and might have spaces in it. This makes manually parsing the result of GetCommandLine tricky.
Similarly, a naive concatenation of argv won't work, because it needs to deal with the case where the original arguments were quoted and might have spaces in them.
Manually recombining them is hard:
You could try to re-combine them, I think it would work, but be sure to following the same command line escaping rules that windows has. This could be more than the trivial solution you're looking for.
Also if there are any parameters that have spaces in them, then you would want to join them to the string with quotes around them. Here is an example of a strange escaping rule: if you have --folderpath "c:\test\" then the last backslash has to be doubled --folderpath "c:\test\\".
If you are using MFC:
You can can get the value you want from your derived CWinApp's theApp.m_lpCmdLine. Note you could still access them the other way too with __argc, and __argv or CommandLineToArgvW.
If you are using Win32 only (even without a GUI):
You can get it from WinMain. Which can be your program's entry point.
Note you could still access them the other way too with __argc, and __argv or CommandLineToArgvW.
If you must use a console based application with main or wmain:
The Win32 API GetCommandLine seems to be the way to go. You would need to still parse this to get past the .exe name though. Take into account quotes around the exe name/path too. If there are no such quotes at the start, then just go to the next space for the start.
You can use the GetCommandLine function.
Why not use 'WinMain' instead of 'main'? This should give you the string in the format you want.
There is Win32 API call that returns command line: GetCommandLine
Provided you have a string allocated with enough space then use strcat on each item in the list. Yes, it is as simple as joining them back together with spaces.
Edit: Of course, you would need to enclose any items containing spaces within quotes.