I have to find out all the constructors in my code base (which is huge) , is there any easy way to do it (without opening each file , reading it and finding all classes)? Any language specific feature that I can use in my grep?
To find destructors it is easy , I can search for "~".
I can write some code to find "::" and match right and left words , if they are equal then I can print that line.
But if constructor is inside the class (with in H/HPP file), the above logic is missing.
Since you're thinking of using grep, I'm assuming you want to do it programmaticly, and not in an IDE.
It also depend if you're parsing the header or the code, again I'm assuming you want to parse the header.
I did it using python:
inClass=False
className=""
motifClass=re.compile("class [a-zA-Z][a-zA-Z1-9_]*)")#to get the class name
motifEndClass=re.compile("};")#Not sure that'll work for every file
motifConstructor=re.compile("~?"+className+"\(.*\)")
res=[]
#assuming you already got the file loaded
for line in lines:
if not inClass:#we're searching to be in one
temp=line.match(class)
if temp:
className=res.group(1)
inClass=True
else:
temp=line.match(motifEndClass)
if temp:#doesn't end at the end of the class, since multiple class can be in a file
inClass=False
continue
temp=line.match(motifConstructor)
if temp:
res.append(line)#we're adding the line that matched
#do whatever you want with res here!
I didn't test it,I did it rather quickly, and tried to simplify an old piece of code, so numerous things are not supported, like nested classes.
From that, you can do a script looking for every header in a directory, and use the result how you like !
Search all classes names and then find the function has same name like class name. And second option is that as we know that the constructor is always be public so search word public and find the constructor.
Related
I am using an Engineering Program which lets me Code formulas in order to filter out specific lines in a database. I am trying to look for a certain line in the database which contains e.g. "concrete" as a property.
In the Code I can use regular expressions.
The regex I was using so far looked like this:
".*(concrete).*";
so if the line in the database contains concrete, I will get the wanted result.
Now the Problem is: i would like to switch the word concrete with a variable, so that it Looks like this:
".*(#VARIABLE1).*";
(the Syntax with the # works in the program btw.)
the Problem is: if i set the variable as concrete, the program automatically switches it for 'concrete' . Obviously, the word concrete cant be found anymore, since the searchterm now contains the two ' Symbols in the beginning and i the end.
Is there a way to ignore those two characters using the Right regex?
what I want it to do is the following:
If a line in the database contains "25cm concrete in Grey"
I should get a match from the regex.
with the searchterm ".*(concrete).*"; it works, with the variable ".*(#VARIABLE1).*"; it doesnt.
EDIT:
the whole "Formula" in the program Looks like that:
if(Match(QTO(Typ:="Attribut{FloorsLayer_02_MaterialName}");".*(#V_QUALITY).*" ;"regex") ;QTO(Typ:="Attribut{Fläche}");0)
I want the if-condition to be true, when the match inside is true.
the whole QTO function is just the programs Syntax to use a certain Attribute into the match-function, the middle part is my Problem. I really don't know the programming language or anything,I'm new to this. hope it helps!
Thats more of a hack than a real solution and i'm not sure if it even works:
if you use the regex
.*(#VARIABLE1)?).*
and the string ?concrete(
this will result in a regex looking like this:
.*('?concrete(')?).*
which makes the additional characters optional.
This uses the following assumtption:
the string (#VARIABLE1) gets replaced by the ('<content of VARIABLE1>')
I know that stackexchange is filled with helpful stuff about how to do things similar to what I want to do, but I'm afraid I'm not skilled enough to extrapolate from them and solve my problem.
I'm trying to write a script that searches for specific latex definitions, contained in one or more .sty files, and then return the entire definition. The definition is contained inside curly brackets, but there may be lots of curly brackets inside of the definition.
For example, following this thread I tried the command
sed -n '/\\def\\propref\>/,/}$/p' *.sty
but this returns
\def\propref#1{%
\IfBeginWith*{#1}{prop:}
But I want it to return the entire definition, delimited by {}, i.e.,
\def\propref#1{%
\IfBeginWith*{#1}{prop:}
{Prop.~\ref{#1}}%
{Prop.~\ref{prop:#1}}}
So, the hard part for me is to locate the closing delimiter that matches the opening one. A second issue, if the solution is to use sed, is that I'd like the command to return the file name as well as the pattern, just as grep does, when searching thru multiple files. Specifically, I'll like the first line of the returned output to look grep-like
my_oneLineDefs.sty:\def\propref#1{%
Here's a snippet of the .sty file containing the definition.
\def\propref#1{%
\IfBeginWith*{#1}{prop:}
{Prop.~\ref{#1}}%
{Prop.~\ref{prop:#1}}}
\def\thmref#1{%
\IfBeginWith*{#1}{thm:}
{Thm.~\ref{#1}}%
{Thm.~\ref{thm:#1}}}
\def\secref#1{%
\IfBeginWith*{#1}{sec:}
{\S\ref{#1}}%
{\S\ref{sec:#1}}}
I have a txt file that I’m trying to import as flat file into SQL2008 that looks like this:
“123456”,”some text”
“543210”,”some more text”
“111223”,”other text”
etc…
The file has more than 300.000 rows and the text is large (usually 200-500 chars), so scanning the file by hand is very time consuming and prone to error. Other similar (and even more complex files) were successfully imported.
The problem with this one, is that “some lines” contain quotes in the text… (this came from an export from an old SuperBase DB that didn’t let you specify a text quantifier, there’s nothing I can do with the file other than clear it and try to import it).
So the “offending” lines look like this:
“123456”,”this text “contains” a quote”
“543210”,”And the “above” text is bad”
etc…
You can see the problem here.
Now, 300.000 is not too much if I could perform a search using a text editor that can use regex, I’d manually remove the quotes from each line. The problem is not the number of offending lines, but the impossibility to find them with a simple search. I’m sure there are less than 500, but spread those in a 300.000 lines txt file and you know what I mean.
Based upon that, what would be the best regex I could use to identify these lines?
My first thought is: Tell me which lines contain more than 4 quotes (“).
But I couldn’t come up with anything (I’m not good at Regex beyond the basics).
this pattern ^("[^"]+){4,} will match "lines containing more than 4 quotes"
you can experiment with replacing 4 with 5 or more, depending on your data.
I think that you can be more direct with a Regex than you're planning to be. Depending on your dialect of Regex, something like this should do it:
^"\d+",".*".*"
You could also use a regex to remove the outside quotes and use a better delimeter instead. For example, search for ^"([0-9]+)","(.*)"$ and replace it with \1+++++DELIM+++++\2.
Of course, this doesn't directly answer your question, but it might solve the problem.
I am using vim 7.x
I am using alternate file.
I have a mapping of *.hpp <--> *.cpp
Suppose I'm in
class Foo {
void some_me#mber_func(); // # = my cursor
}
in Foo.hpp
is there a way to tell vim to do the following:
Grab word under # (easy, expand("")
Look up the class I'm inside of ("Foo") <-- I have no idea how to do this
Append `1 & 2 (easy: using ".") --> "Foo::some_member_func"
4: Switch files (easy, :A)
Do a / on 4
So basically, I can script all of this together, except the "find the name of the enclosing class I'm in part (especially if classes are nested).
I know about ctags. I know about cscope. I'm choosing to not use them -- I prefer solutions where I understand where they break.
This is relatively easy to do crudely and very difficult to do well. C and C++ are rather complex languages to parse reliably. At the risk of being downvoted, I'd personally recommend parsing the tags file generated by ctags, but if you really want to do it in Vim, there are a few of options for the "crude" method.
Make some assumptions. The assumptions you make depend on how complicated you want it to be. At the simplest level: assume you're in a class definition and there are no other nearby braces. Based on your coding style, assume that the opening brace of the class definition is on the same line as "class".
let classlineRE = '^class\s\+\(\k\+\)\s\+{.*'
let match = search(classlineRE, 'bnW')
if match != 0
let classline = getline(match)
let classname = substitute(classline, classlineRE, '\1', '')
" Now do something with classname
endif
The assumptions model can obviously be extended/generalised as much as you see fit. You can just search back for the brace and then search back for class and take what's in between (to handle braces on a separate line to "class"). You can filter out comments. If you want to be really clever, you can start looking at what level of braces you're in and make sure it's a top level one (go to the start of the file, add 1 every time you see '{' and subtract one every time you see '}' etc). Your vim script will get very very very complicated.
Another one risking the downvote, you could use one of the various C parsers written in python and use the vim-python interface to make it act like a vim script. To be honest, if you're thinking of doing this, I'd stick with ctags/cscope.
Use rainbow.vim. This does highlighting based on depth of indentation, so you could be a little clever and search back (using search('{', 'bW') or similar) for opening braces, then interrogate the syntax highlighting of those braces (using synIDattr(synID(line("."), col("."),1), "name")) and if it's hlLevel0, you know it's a top-level brace. You can then search back for class and parse as per item 1.
I hope that all of the above gives you some food for thought...
Is there anyway I can incorporate a pretty large text file (about 700KBs) into the program itself, so I don't have to ship the text files together in the application directory ? This is the first time I'm trying to do something like this, and I have no idea where to start from.
Help is greatly appreciated (:
Depending on the platform that you are on, you will more than likely be able to embed the file in a resource container of some kind.
If you are programming on the Windows platform, then you might want to look into resource files. You can find a basic intro here:
http://msdn.microsoft.com/en-us/library/y3sk7e6b.aspx
With more detailed information here:
http://msdn.microsoft.com/en-us/library/zabda143.aspx
Have a look at the xxd command and its -include option. You will get a buffer and a length variable in a C formatted file.
If you can figure out how to use a resource file, that would be the preferred method.
It wouldn't be hard to turn a text file into a file that can be compiled directly by your compiler. This might only work for small files - your compiler might have a limit on the size of a single string. If so, a tiny syntax change would make it an array of smaller strings that would work just fine.
You need to convert your file by adding a line at the top, enclosing each line within quotes, putting a newline character at the end of each line, escaping any quotes or backslashes in the text, and adding a semicolon at the end. You can write a program to do this, or it can easily be done in most editors.
This is my example document:
"Four score and seven years ago,"
can be found in the file c:\quotes\GettysburgAddress.txt
Convert it to:
static const char Text[] =
"This is my example document:\n"
"\"Four score and seven years ago,\"\n"
"can be found in the file c:\\quotes\\GettysburgAddress.txt\n"
;
This produces a variable Text which contains a single string with the entire contents of your file. It works because consecutive strings with nothing but whitespace between get concatenated into a single string.