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  • How to search for one of two similar strings in Vim?

    - by Nathan Long
    This is a pretty simple regex question, I think. In Vim, if I want do a search that matches planA or planB, I know that I can do this: /plan[AB] This works because the regex allows for either A or B as its set of characters. But how can I specify one of two complete strings? For example, to match both planetAwesome and planetTerrible, this doesn't work: planet[Awesome|Terrible] ... because it's looking for planetA or planetw or planete, etc. Nor does this: planet['Awesome'|'Terrible'] This will match both of these, along with planetAnythingHereAsLongAsItsJustLetters: planet\([a-zA-Z]*\) But how can I match only strings that match planetAwesome or planetTerrible exactly?

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  • UNIX "find" command, match literal "dot"

    - by Robottinosino
    I need files ending with ".pdf" or ".png"; here's my attempt: find /Users/robottinosino/Desktop/_PublishMe_ -type f -regex '.*[pdf|png]' this incorrectly includes files ending with "Apdf", "Zpdf", etc. (missing literal dot before file extension) I tried adjusting the pattern to: find /Users/robottinosino/Desktop/_PublishMe_ -type f -regex '.*\.[pdf|png]' but then no results are returned. Escaping the . with a backslash does not work. Why? [0] $ uname -a Darwin Robottinosino.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386 Thanks!

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  • How to sort a file with string lines by the number of a specific symbol in the line?

    - by SpacyRicochet
    Say I have a large plaintext file with a string on every line. The string only consists of alphabetical characters, except for underscores _, which divide the strings in syllables. I want to sort the text file by the amount underscores in the string. Bonus points for putting every group of X underscores in their own file. Example: hel_lo hi su_per_u_ser o_ver_flow would sort into: hi hel_lo o_ver_flow su_per_u_ser I've tried doing this with regex, but I've yet to find a proper way of counting the underscores (regex confuses me thoroughly). Anyone know how I could handle this?

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  • Combine several locations with regex in nginx

    - by AlexAtNet
    I dynamic number of Joomla installations in subfolders of the domain. For example: http://site/joomla_1/ http://site/joomla_2/ http://site/joomla_3/ ... Currently I have the follwing config that works: index index.php; location / { index index.php index.html index.htm; } location /joomla_1/ { try_files $uri $uri/ /joomla_1/index.php?q=$uri&$args; } location /joomla_2/ { try_files $uri $uri/ /joomla_2/index.php?q=$uri&$args; } location ~ \.php$ { fastcgi_pass unix:/var/run/php5-fpm/joomla.sock; ... } I'm trying to combine joomla_N rules in one: location ~ ^/(joomla_[^/]+)/ { try_files $uri $uri/ /$1/index.php?q=$uri&$args; } but server starts to return index.php as is (does not call the php-fpm). It looks like the nginx stops the processing of the regex rules after the first match. Is there any way to combine this rules with something like regex?

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  • Class member functions instantiated by traits

    - by Jive Dadson
    I am reluctant to say I can't figure this out, but I can't figure this out. I've googled and searched Stack Overflow, and come up empty. The abstract, and possibly overly vague form of the question is, how can I use the traits-pattern to instantiate non-virtual member functions? The question came up while modernizing a set of multivariate function optimizers that I wrote more than 10 years ago. The optimizers all operate by selecting a straight-line path through the parameter space away from the current best point (the "update"), then finding a better point on that line (the "line search"), then testing for the "done" condition, and if not done, iterating. There are different methods for doing the update, the line-search, and conceivably for the done test, and other things. Mix and match. Different update formulae require different state-variable data. For example, the LMQN update requires a vector, and the BFGS update requires a matrix. If evaluating gradients is cheap, the line-search should do so. If not, it should use function evaluations only. Some methods require more accurate line-searches than others. Those are just some examples. The original version instantiates several of the combinations by means of virtual functions. Some traits are selected by setting mode bits that are tested at runtime. Yuck. It would be trivial to define the traits with #define's and the member functions with #ifdef's and macros. But that's so twenty years ago. It bugs me that I cannot figure out a whiz-bang modern way. If there were only one trait that varied, I could use the curiously recurring template pattern. But I see no way to extend that to arbitrary combinations of traits. I tried doing it using boost::enable_if, etc.. The specialized state information was easy. I managed to get the functions done, but only by resorting to non-friend external functions that have the this-pointer as a parameter. I never even figured out how to make the functions friends, much less member functions. The compiler (VC++ 2008) always complained that things didn't match. I would yell, "SFINAE, you moron!" but the moron is probably me. Perhaps tag-dispatch is the key. I haven't gotten very deeply into that. Surely it's possible, right? If so, what is best practice? UPDATE: Here's another try at explaining it. I want the user to be able to fill out an order (manifest) for a custom optimizer, something like ordering off of a Chinese menu - one from column A, one from column B, etc.. Waiter, from column A (updaters), I'll have the BFGS update with Cholesky-decompositon sauce. From column B (line-searchers), I'll have the cubic interpolation line-search with an eta of 0.4 and a rho of 1e-4, please. Etc... UPDATE: Okay, okay. Here's the playing-around that I've done. I offer it reluctantly, because I suspect it's a completely wrong-headed approach. It runs okay under vc++ 2008. #include <boost/utility.hpp> #include <boost/type_traits/integral_constant.hpp> namespace dj { struct CBFGS { void bar() {printf("CBFGS::bar %d\n", data);} CBFGS(): data(1234){} int data; }; template<class T> struct is_CBFGS: boost::false_type{}; template<> struct is_CBFGS<CBFGS>: boost::true_type{}; struct LMQN {LMQN(): data(54.321){} void bar() {printf("LMQN::bar %lf\n", data);} double data; }; template<class T> struct is_LMQN: boost::false_type{}; template<> struct is_LMQN<LMQN> : boost::true_type{}; struct default_optimizer_traits { typedef CBFGS update_type; }; template<class traits> class Optimizer; template<class traits> void foo(typename boost::enable_if<is_LMQN<typename traits::update_type>, Optimizer<traits> >::type& self) { printf(" LMQN %lf\n", self.data); } template<class traits> void foo(typename boost::enable_if<is_CBFGS<typename traits::update_type>, Optimizer<traits> >::type& self) { printf("CBFGS %d\n", self.data); } template<class traits = default_optimizer_traits> class Optimizer{ friend typename traits::update_type; //friend void dj::foo<traits>(typename Optimizer<traits> & self); // How? public: //void foo(void); // How??? void foo() { dj::foo<traits>(*this); } void bar() { data.bar(); } //protected: // How? typedef typename traits::update_type update_type; update_type data; }; } // namespace dj int main_() { dj::Optimizer<> opt; opt.foo(); opt.bar(); std::getchar(); return 0; }

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  • Java installation problem

    - by Zxy
    I cannot install java on my ubuntu 12.04: zero@ghostrider:~$ sudo apt-get purge openjdk* [sudo] password for zero: Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'openjdk-6-demo' for regex 'openjdk*' Note, selecting 'openjdk-7-jre-headless' for regex 'openjdk*' Note, selecting 'uwsgi-plugin-jwsgi-openjdk-6' for regex 'openjdk*' Note, selecting 'openjdk-jre' for regex 'openjdk*' Note, selecting 'openjdk-7-source' for regex 'openjdk*' Note, selecting 'openjdk-6-dbg' for regex 'openjdk*' Note, selecting 'openjdk7-jdk' for regex 'openjdk*' Note, selecting 'openjdk-6-doc' for regex 'openjdk*' Note, selecting 'openjdk-7-jre-zero' for regex 'openjdk*' Note, selecting 'openjdk-7-demo' for regex 'openjdk*' Note, selecting 'openjdk-6-jre-headless' for regex 'openjdk*' Note, selecting 'openjdk-6-jdk' for regex 'openjdk*' Note, selecting 'openjdk-6-jre' for regex 'openjdk*' Note, selecting 'openjdk-6-jre-lib' for regex 'openjdk*' Note, selecting 'openjdk-6-jre-zero' for regex 'openjdk*' Note, selecting 'openjdk-7-dbg' for regex 'openjdk*' Note, selecting 'openjdk-7-doc' for regex 'openjdk*' Note, selecting 'openjdk-7-jdk' for regex 'openjdk*' Note, selecting 'openjdk-7-jre' for regex 'openjdk*' Note, selecting 'openjdk-6-source' for regex 'openjdk*' Note, selecting 'openjdk-7-jre-lib' for regex 'openjdk*' Note, selecting 'uwsgi-plugin-jvm-openjdk-6' for regex 'openjdk*' Package uwsgi-plugin-jvm-openjdk-6 is not installed, so not removed Package uwsgi-plugin-jwsgi-openjdk-6 is not installed, so not removed Package openjdk-6-dbg is not installed, so not removed Package openjdk-6-demo is not installed, so not removed Package openjdk-6-doc is not installed, so not removed Package openjdk-6-jdk is not installed, so not removed Package openjdk-6-jre is not installed, so not removed Package openjdk-6-jre-headless is not installed, so not removed Package openjdk-6-jre-lib is not installed, so not removed Package openjdk-6-source is not installed, so not removed Package openjdk-6-jre-zero is not installed, so not removed Package openjdk-7-dbg is not installed, so not removed Package openjdk-7-demo is not installed, so not removed Package openjdk-7-doc is not installed, so not removed Package openjdk-7-jdk is not installed, so not removed Package openjdk-7-jre is not installed, so not removed Package openjdk-7-jre-headless is not installed, so not removed Package openjdk-7-jre-lib is not installed, so not removed Package openjdk-7-jre-zero is not installed, so not removed Package openjdk-7-source is not installed, so not removed 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up oracle-java7-installer (7u3-0~eugenesan~precise4) ... Downloading... --2012-06-11 23:56:42-- http://download.oracle.com/otn-pub/java/jdk/7u3-b04/jdk- 7u3-linux-i586.tar.gz Resolving download.oracle.com (download.oracle.com)... 64.209.77.18 Connecting to download.oracle.com (download.oracle.com)|64.209.77.18|:80... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-i586.tar.gz [following] --2012-06-11 23:56:42-- https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-i586.tar.gz Resolving edelivery.oracle.com (edelivery.oracle.com)... 95.101.122.174 Connecting to edelivery.oracle.com (edelivery.oracle.com)|95.101.122.174|:443... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: http://download.oracle.com/errors/download-fail-1505220.html [following] --2012-06-11 23:56:44-- http://download.oracle.com/errors/download-fail-1505220.html Connecting to download.oracle.com (download.oracle.com)|64.209.77.18|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 5307 (5.2K) [text/html] Saving to: `./jdk-7u3-linux-i586.tar.gz' 0K ..... 100% 1007K=0.005s 2012-06-11 23:56:44 (1007 KB/s) - `./jdk-7u3-linux-i586.tar.gz' saved [5307/5307] Download done. sha256sum mismatch jdk-7u3-linux-i586.tar.gz Oracle JDK 7 is NOT installed. dpkg: error processing oracle-java7-installer (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already Errors were encountered while processing: oracle-java7-installer E: Sub-process /usr/bin/dpkg returned an error code (1) zero@ghostrider:~$ sudo add-apt-repository ppa:eugenesan/java You are about to add the following PPA to your system: More info: https://launchpad.net/~eugenesan/+archive/java Press [ENTER] to continue or ctrl-c to cancel adding it Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret- keyring /tmp/tmp.uGcZHfsoNF --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver hkp://keyserver.ubuntu.com:80/ --recv 4346FBB158F4022C896164EEE61380B28313A596 gpg: requesting key 8313A596 from hkp server keyserver.ubuntu.com gpg: key 8313A596: "Launchpad synergy+" not changed gpg: Total number processed: 1 gpg: unchanged: 1 zero@ghostrider:~$ sudo apt-get update Ign http://tr.archive.ubuntu.com precise InRelease Ign http://tr.archive.ubuntu.com precise-updates InRelease Ign http://tr.archive.ubuntu.com precise-backports InRelease Hit http://tr.archive.ubuntu.com precise Release.gpg Hit http://tr.archive.ubuntu.com precise-updates Release.gpg Hit http://tr.archive.ubuntu.com precise-backports Release.gpg Hit http://tr.archive.ubuntu.com precise Release Ign http://extras.ubuntu.com precise InRelease Ign http://security.ubuntu.com precise-security InRelease Hit http://tr.archive.ubuntu.com precise-updates Release Ign http://ppa.launchpad.net precise InRelease Hit http://tr.archive.ubuntu.com precise-backports Release Hit http://tr.archive.ubuntu.com precise/main Sources Hit http://tr.archive.ubuntu.com precise/restricted Sources Hit http://tr.archive.ubuntu.com precise/universe Sources Hit http://tr.archive.ubuntu.com precise/multiverse Sources Hit http://tr.archive.ubuntu.com precise/main i386 Packages Hit http://tr.archive.ubuntu.com precise/restricted i386 Packages Hit http://tr.archive.ubuntu.com precise/universe i386 Packages Hit http://extras.ubuntu.com precise Release.gpg Hit http://ppa.launchpad.net precise Release.gpg Hit http://security.ubuntu.com precise-security Release.gpg Hit http://tr.archive.ubuntu.com precise/multiverse i386 Packages Hit http://tr.archive.ubuntu.com precise/main TranslationIndex Hit http://tr.archive.ubuntu.com precise/multiverse TranslationIndex Hit http://tr.archive.ubuntu.com precise/restricted TranslationIndex Hit http://tr.archive.ubuntu.com precise/universe TranslationIndex Hit http://tr.archive.ubuntu.com precise-updates/main Sources Hit http://tr.archive.ubuntu.com precise-updates/restricted Sources Hit http://tr.archive.ubuntu.com precise-updates/universe Sources Hit http://tr.archive.ubuntu.com precise-updates/multiverse Sources Hit http://tr.archive.ubuntu.com precise-updates/main i386 Packages Hit http://extras.ubuntu.com precise Release Hit http://ppa.launchpad.net precise Release Hit http://security.ubuntu.com precise-security Release Hit http://tr.archive.ubuntu.com precise-updates/restricted i386 Packages Hit http://tr.archive.ubuntu.com precise-updates/universe i386 Packages Hit http://tr.archive.ubuntu.com precise-updates/multiverse i386 Packages Hit http://tr.archive.ubuntu.com precise-updates/main TranslationIndex Hit http://tr.archive.ubuntu.com precise-updates/multiverse TranslationIndex Hit http://tr.archive.ubuntu.com precise-updates/restricted TranslationIndex Hit http://tr.archive.ubuntu.com precise-updates/universe TranslationIndex Hit http://tr.archive.ubuntu.com precise-backports/main Sources Hit http://tr.archive.ubuntu.com precise-backports/restricted Sources Hit http://tr.archive.ubuntu.com precise-backports/universe Sources Hit http://tr.archive.ubuntu.com precise-backports/multiverse Sources Hit http://tr.archive.ubuntu.com precise-backports/main i386 Packages Hit http://tr.archive.ubuntu.com precise-backports/restricted i386 Packages Hit http://tr.archive.ubuntu.com precise-backports/universe i386 Packages Hit http://tr.archive.ubuntu.com precise-backports/multiverse i386 Packages Hit http://tr.archive.ubuntu.com precise-backports/main TranslationIndex Hit http://extras.ubuntu.com precise/main Sources Hit http://ppa.launchpad.net precise/main Sources Hit http://security.ubuntu.com precise-security/main Sources Hit http://tr.archive.ubuntu.com precise-backports/multiverse TranslationIndex Hit http://tr.archive.ubuntu.com precise-backports/restricted TranslationIndex Hit http://tr.archive.ubuntu.com precise-backports/universe TranslationIndex Hit http://tr.archive.ubuntu.com precise/main Translation-en Hit http://tr.archive.ubuntu.com precise/multiverse Translation-en Hit http://extras.ubuntu.com precise/main i386 Packages Ign http://extras.ubuntu.com precise/main TranslationIndex Hit http://tr.archive.ubuntu.com precise/restricted Translation-en Hit http://tr.archive.ubuntu.com precise/universe Translation-en Hit http://tr.archive.ubuntu.com precise-updates/main Translation-en Hit http://tr.archive.ubuntu.com precise-updates/multiverse Translation-en Hit http://tr.archive.ubuntu.com precise-updates/restricted Translation-en Hit http://ppa.launchpad.net precise/main i386 Packages Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://security.ubuntu.com precise-security/restricted Sources Hit http://security.ubuntu.com precise-security/universe Sources Hit http://security.ubuntu.com precise-security/multiverse Sources Hit http://security.ubuntu.com precise-security/main i386 Packages Hit http://security.ubuntu.com precise-security/restricted i386 Packages Hit http://tr.archive.ubuntu.com precise-updates/universe Translation-en Hit http://tr.archive.ubuntu.com precise-backports/main Translation-en Hit http://tr.archive.ubuntu.com precise-backports/multiverse Translation-en Hit http://tr.archive.ubuntu.com precise-backports/restricted Translation-en Hit http://tr.archive.ubuntu.com precise-backports/universe Translation-en Hit http://security.ubuntu.com precise-security/universe i386 Packages Hit http://security.ubuntu.com precise-security/multiverse i386 Packages Hit http://security.ubuntu.com precise-security/main TranslationIndex Hit http://security.ubuntu.com precise-security/multiverse TranslationIndex Hit http://security.ubuntu.com precise-security/restricted TranslationIndex Hit http://security.ubuntu.com precise-security/universe TranslationIndex Hit http://security.ubuntu.com precise-security/main Translation-en Hit http://security.ubuntu.com precise-security/multiverse Translation-en Hit http://security.ubuntu.com precise-security/restricted Translation-en Hit http://security.ubuntu.com precise-security/universe Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://extras.ubuntu.com precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://extras.ubuntu.com precise/main Translation-en Reading package lists... Done zero@ghostrider:~$ sudo apt-get install oracle-java7-installer Reading package lists... Done Building dependency tree Reading state information... Done oracle-java7-installer is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? Y Setting up oracle-java7-installer (7u3-0~eugenesan~precise4) ... Downloading... --2012-06-11 23:57:11-- http://download.oracle.com/otn-pub/java/jdk/7u3-b04/jdk- 7u3-linux-i586.tar.gz Resolving download.oracle.com (download.oracle.com)... 64.209.77.18 Connecting to download.oracle.com (download.oracle.com)|64.209.77.18|:80... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-i586.tar.gz [following] --2012-06-11 23:57:11-- https://edelivery.oracle.com/otn-pub/java/jdk/7u3-b04/jdk-7u3-linux-i586.tar.gz Resolving edelivery.oracle.com (edelivery.oracle.com)... 95.101.122.174 Connecting to edelivery.oracle.com (edelivery.oracle.com)|95.101.122.174|:443... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: http://download.oracle.com/errors/download-fail-1505220.html [following] --2012-06-11 23:57:12-- http://download.oracle.com/errors/download-fail-1505220.html Connecting to download.oracle.com (download.oracle.com)|64.209.77.18|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 5307 (5.2K) [text/html] Saving to: `./jdk-7u3-linux-i586.tar.gz' 0K ..... 100% 976K=0.005s 2012-06-11 23:57:12 (976 KB/s) - `./jdk-7u3-linux-i586.tar.gz' saved [5307/5307] Download done. sha256sum mismatch jdk-7u3-linux-i586.tar.gz Oracle JDK 7 is NOT installed. dpkg: error processing oracle-java7-installer (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already Errors were encountered while processing: oracle-java7-installer E: Sub-process /usr/bin/dpkg returned an error code (1) zero@ghostrider:~$

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  • Boost.MultiIndex: How to make an effective set intersection?

    - by Arman
    Hello, assume that we have a data1 and data2. How can I intersect them with std::set_intersect()? struct pID { int ID; unsigned int IDf;// postition in the file pID(int id,const unsigned int idf):ID(id),IDf(idf){} bool operator<(const pID& p)const { return ID<p.ID;} }; struct ID{}; struct IDf{}; typedef multi_index_container< pID, indexed_by< ordered_unique< tag<IDf>, BOOST_MULTI_INDEX_MEMBER(pID,unsigned int,IDf)>, ordered_non_unique< tag<ID>,BOOST_MULTI_INDEX_MEMBER(pID,int,ID)> > > pID_set; ID_set data1, data2; Load(data1); Load(data2); pID_set::index<ID>::type& L1_ID_index=L1.data.get<ID>(); pID_set::index<ID>::type& L2_ID_index=L2.data.get<ID>(); // How do I use set_intersect? Kind regards, Arman.

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  • How to write rule for ICU genrb and pkgdata for boost-build?

    - by sandy
    jamroot.jam rule genrb ( sources + : requirements * ) # create *.res files in binary directory { local result ; for local r in $(sources) { res $(r:B) : $(r) ; } } res.jam type.register RES : res ; type.register TXT : txt ; generators.register-standard res.resource : TXT : RES ; actions resource { $(icu_home)\bin64\genrb "-d$(<:D)" "$()" } I need to run pkgdata with parameters: pkgdata [-options] [-] [packageFile] packageFile is a text file containing the list of res-files to package.

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  • How might I assume a "default value" when parsing using boost::spirit?

    - by tJener
    Let's say I have a grammar defined to something like: a b c d where c, and d are optional and default to 14 if not given. Can I get it to automatically return the 14 if the value isn't given? The closest I've come is like the following: qi::rule<Iterator, std::vector<int>(), ascii::space_type> some_rule; some_rule %= >> int_ >> int_ >> -int_ >> -int_; // ... some_other_rule = some_rule[&some_callback_for_int_vectors]; which will then get 0 for the optional values that didn't show up (I believe). I then change consecutive 0s at the end into 14. Not only is this horribly wrong, but its also just not elegant. Is there a better way to do this?

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  • Why can't I extract a C++ type from a Python type using boost::python::extractor?

    - by Robin
    I've wrapped a C++ class using Py++ and everything is working great in Python. I can instantiate the c++ class, call methods, etc. I'm now trying to embed some Python into a C++ application. This is also working fine for the most-part. I can call functions on a Python module, get return values, etc. The python code I'm calling returns one of the classes that I wrapped: import _myextension as myext def run_script(arg): my_cpp_class = myext.MyClass() return my_cpp_class I'm calling this function from C++ like this: // ... excluding error checking, ref counting, etc. for brevity ... PyObject *pModule, *pFunc, *pArgs, *pReturnValue; Py_Initialize(); pModule = PyImport_Import(PyString_FromString("cpp_interface")); pFunc = PyObject_GetAttrString(pModule, "run_script"); pArgs = PyTuple_New(1); PyTuple_SetItem(pArgs, 0, PyString_FromString("an arg")); pReturnValue = PyObject_CallObject(pFunc, pArgs); bp::extract< MyClass& > extractor(pReturnValue); // PROBLEM IS HERE if (extractor.check()) { // This check is always false MyClass& cls = extractor(); } The problem is the extractor never actually extracts/converts the PyObject* to MyClass (i.e. extractor.check() is always false). According to the docs this is the correct way to extract a wrapped C++ class. I've tried returning basic data types (ints/floats/dicts) from the Python function and all of them are extracted properly. Is there something I'm missing? Is there another way to get the data and cast to MyClass?

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  • [boost::filesystem] performance: is it better to read all files once, or use b::fs functions over an

    - by rubenvb
    I'm conflicted between a "read once, use memory+pointers to files" and a "read when necessary" approach. The latter is of course much easier (no additional classes needed to store the whole dir structure), but IMO it is slower? A little clarification: I'm writing a simple build system, that read a project file, checks if all files are present, and runs some compile steps. The file tree is static, so the first option doesn't need to be very dynamic and only needs to be built once every time the program is run. Thanks

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  • How to get all captures of subgroup matches with preg_match_all()?

    - by hakre
    Update/Note: I think what I'm probably looking for is to get the captures of a group in PHP. Referenced: PCRE regular expressions using named pattern subroutines. (Read carefully:) I have a string that contains a variable number of segments (simplified): $subject = 'AA BB DD '; // could be 'AA BB DD CC EE ' as well I would like now to match the segments and return them via the matches array: $pattern = '/^(([a-z]+) )+$/i'; $result = preg_match_all($pattern, $subject, $matches); This will only return the last match for the capture group 2: DD. Is there a way that I can retrieve all subpattern captures (AA, BB, DD) with one regex execution? Isn't preg_match_all suitable for this? This question is a generalization. Both the $subject and $pattern are simplified. Naturally with such the general list of AA, BB, .. is much more easy to extract with other functions (e.g. explode) or with a variation of the $pattern. But I'm specifically asking how to return all of the subgroup matches with the preg_...-family of functions. For a real life case imagine you have multiple (nested) level of a variant amount of subpattern matches. Example This is an example in pseudo code to describe a bit of the background. Imagine the following: Regular definitions of tokens: CHARS := [a-z]+ PUNCT := [.,!?] WS := [ ] $subject get's tokenized based on these. The tokenization is stored inside an array of tokens (type, offset, ...). That array is then transformed into a string, containing one character per token: CHARS -> "c" PUNCT -> "p" WS -> "s" So that it's now possible to run regular expressions based on tokens (and not character classes etc.) on the token stream string index. E.g. regex: (cs)?cp to express one or more group of chars followed by a punctuation. As I now can express self-defined tokens as regex, the next step was to build the grammar. This is only an example, this is sort of ABNF style: words = word | (word space)+ word word = CHARS+ space = WS punctuation = PUNCT If I now compile the grammar for words into a (token) regex I would like to have naturally all subgroup matches of each word. words = (CHARS+) | ( (CHARS+) WS )+ (CHARS+) # words resolved to tokens words = (c+)|((c+)s)+c+ # words resolved to regex I could code until this point. Then I ran into the problem that the sub-group matches did only contain their last match. So I have the option to either create an automata for the grammar on my own (which I would like to prevent to keep the grammar expressions generic) or to somewhat make preg_match working for me somehow so I can spare that. That's basically all. Probably now it's understandable why I simplified the question. Related: pcrepattern man page Get repeated matches with preg_match_all()

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  • Algorithm to match list of regular expressions

    - by DSII
    I have two algorithmic questions for a project I am working on. I have thought about these, and have some suspicions, but I would love to hear the community's input as well. Suppose I have a string, and a list of N regular expressions (actually they are wildcard patterns representing a subset of full regex functionality). I want to know whether the string matches at least one of the regular expressions in the list. Is there a data structure that can allow me to match the string against the list of regular expressions in sublinear (presumably logarithmic) time? This is an extension of the previous problem. Suppose I have the same situation: a string and a list of N regular expressions, only now each of the regular expressions is paired with an offset within the string at which the match must begin (or, if you prefer, each of the regular expressions must match a substring of the given string beginning at the given offset). To give an example, suppose I had the string: This is a test string and the regex patterns and offsets: (a) his.* at offset 0 (b) his.* at offset 1 The algorithm should return true. Although regex (a) does not match the string beginning at offset 0, regex (b) does match the substring beginning at offset 1 ("his is a test string"). Is there a data structure that can allow me to solve this problem in sublinear time? One possibly useful piece of information is that often, many of the offsets in the list of regular expressions are the same (i.e. often we are matching the substring at offset X many times). This may be useful to leverage the solution to problem #1 above. Thank you very much in advance for any suggestions you may have!

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  • regular expression to remove original message from reply mail using in java ?

    - by ravi ravi
    In my forum, users can reply through email. I am handling mails from their reply. When they are replying the original message getting appended. I want to get only the reply message not the original message. I have to write regular expression for gmail & hotmail. I written regex for gmail as follows : \n.wrote:(?s).--End of Post-- It is removing the original message except date. I want to remove the date also. before removing the original message : " hi 33 On Tue, May 11, 2010 at 4:18 PM, Mmmmm, Rrrrr wrote: The following update has been posted to this discussion: test as user 222 [$MESSAGE_SIGNATURE_HEADER$] --End of Post-- " When I use the above regex it is filtering as follows : " hi 33 On Tue, May 11, 2010 at 4:18 PM, Mmmmm, Rrrrr " Here i want only the actual message 'hi 33' not that date. How can I filter the date using above regex? Also I need regex for Hotmail also. I appreciate for any reply. Thanks in advance.

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  • Treetop basic parsing and regular expression usage

    - by ucint
    I'm developing a script using the ruby Treetop library and having issues working with its syntax for regex's. First off, many regular expressions that work in other settings dont work the same in treetop. This is my grammar: (myline.treetop) grammar MyLine rule line string whitespace condition end rule string [\S]* end rule whitespace [\s]* end rule condition "new" / "old" / "used" end end This is my usage: (usage.rb) require 'rubygems' require 'treetop' require 'polyglot' require 'myline' parser = MyLineParser.new p parser.parse("randomstring new") This should find the word new for sure and it does! Now I wont to extend it so that it can find new if the input string becomes "randomstring anotherstring new yetanother andanother" and possibly have any number of strings followed by whitespace (tab included) before and after the regex for rule condition. In other words, if I pass it any sentence with the word "new" etc in it, it should be able to match it. So let's say I change my grammar to: rule line string whitespace condition whitespace string end Then, it should be able to find a match for: p parser.parse("randomstring new anotherstring") So, what do I have to do to allow the string whitespace to be repeated before and after condition? If I try to write this: rule line (string whitespace)* condition (whitespace string)* end , it goes in an infinite loop. If i replace the above () with [], it returns nil In general, regex's return a match when i use the above, but treetop regex's dont. Does anyone have any tips/points on how to go about this? Plus, since there isn't much documentation for treetop and the examples are either too trivial or too complex, is there anyone who knows a more thorough documentation/guide for treetop?

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  • How can I remove certain characters from inside angle-brackets, leaving the characters outside alone

    - by Iain Fraser
    Edit: To be clear, please understand that I am not using Regex to parse the html, that's crazy talk! I'm simply wanting to clean up a messy string of html so it will parse Edit #2: I should also point out that the control character I'm using is a special unicode character - it's not something that would ever be used in a proper tag under any normal circumstances Suppose I have a string of html that contains a bunch of control characters and I want to remove the control characters from inside tags only, leaving the characters outside the tags alone. For example Here the control character is the numeral "1". Input The quick 1<strong>orange</strong> lemming <sp11a1n 1class1='jumpe111r'11>jumps over</span> 1the idle 1frog Desired Output The quick 1<strong>orange</strong> lemming <span class='jumper'>jumps over</span> 1the idle 1frog So far I can match tags which contain the control character but I can't remove them in one regex. I guess I could perform another regex on my matches, but I'd really like to know if there's a better way. My regex Bear in mind this one only matches tags which contain the control character. <(([^>])*?`([^>])*?)*?> Thanks very much for your time and consideration. Iain Fraser

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  • C++: parsing with simple regular expression or shoud I use sscanf?

    - by Helltone
    I need to parse a string like func1(arg1, arg2); func2(arg3, arg4);. It's not a very complex parsing problem, so I would prefer to avoid resorting to flex/bison or similar utilities. My first approch was to try to use POSIX C regcomp/regexec or Boost implementation of C++ std::regex. I wrote the following regular expression, which does not work (I'll explain why further on). "^" "[ ;\t\n]*" "(" // (1) identifier "[a-zA-Z_][a-zA-Z0-9_]*" ")" "[ \t\n]*" "(" // (2) non-marking "\[" "(" // (3) non-marking "[ \t]*" "(" // (4..n-1) argument "[a-zA-Z0-9_]+" ")" "[ \t\n]*" "," ")*" "[ \t\n]*" "(" // (n) last argument "[a-zA-Z0-9_]+" ")" "]" ")?" "[ \t\n]*" ";" Note that the group 1 captures the identifier and groups 4..n-1 are intended to capture arguments except the last, which is captured by group n. When I apply this regex to, say func(arg1, arg2, arg3) the result I get is an array {func, arg2, arg3}. This is wrong because arg1 is not in it! The problem is that in the standard regex libraries, submarkings only capture the last match. In other words, if you have for instance the regex "((a*|b*))*" applied on "babb", the results of the inner match will be bb and all previous captures will have been forgotten. Another thing that annoys me here is that in case of error there is no way to know which character was not recognized as these functions provide very little information about the state of the parser when the input is rejected. So I don't know if I'm missing something here... In this case should I use sscanf or similar instead? Note that I prefer to use C/C++ standard libraries (and maybe boost).

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  • Invalid quantifer error using Regular Expression (UK Telephone numbers)

    - by Matt
    HI all, as per the title I am getting the error "Invalid Quantifier" Trying to match this reg ex:- ^(((+44\s?\d{4}|(?0\d{4})?)\s?\d{3}\s?\d{3})|((+44\s?\d{3}|(?0\d{3})?)\s?\d{3}\s?\d{4})|((+44\s?\d{2}|(?0\d{2})?)\s?\d{4}\s?\d{4}))(\s?#(\d{4}|\d{3}))?$ Infact ive tried a few UK telephone number regex's from the regex librairy but im getting the same error all the time. If anyone can help id be much appreciative! Just for info, im using the jQuery form validation librairy, and here is my code: - $(document).ready(function(){ //Set Fields to be validated $("#EventForm").validate(); $( "#StartDate" ).datepicker(); $( "#EndDate" ).datepicker(); //Add Postcode Regex Method to Validator Function $.validator.addMethod( "postcode", function(value, element, regexp) { var check = false; var re = new RegExp(regexp); return this.optional(element) || re.test(value); }, "Please enter a valid postcode." ); //Add UK Telephone number Regex Method to Validator Function $.validator.addMethod( "telephone", function(value, element, regexp) { var check = false; var re = new RegExp(regexp); return this.optional(element) || re.test(value); }, "Please enter a valid UK telephone number in the format - 01856 666666." ); //Add Postcode Regular Expression Rule to Postcode Field $("#EventPostcode").rules("add", { postcode: "^([a-zA-Z]){1}([0-9][0-9]|[0-9]|[a-zA-Z][0-9][a-zA-Z]|[a-zA-Z][0-9][0-9]|[a-zA-Z][0-9]){1}([ ])([0-9][a-zA-z][a-zA-z]){1}$"}); $("#EventTelephoneNo").rules("add", { telephone: "^(((\+44\s?\d{4}|\(?0\d{4}\)?)\s?\d{3}\s?\d{3})|((\+44\s?\d{3}|\(?0\d{3}\)?)\s?\d{3}\s?\d{4})|((\+44\s?\d{2}|\(?0\d{2}\)?)\s?\d{4}\s?\d{4}))(\s?\#(\d{4}|\d{3}))?$"}); }); Many thanks

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  • Getting dialogue snippets from text using regular expressions

    - by sheldon
    I'm trying to extract snippets of dialogue from a book text. For example, if I have the string "What's the matter with the flag?" inquired Captain MacWhirr. "Seems all right to me." Then I want to extract "What's the matter with the flag?" and "Seem's all right to me.". I found a regular expression to use here, which is "[^"\\]*(\\.[^"\\]*)*". This works great in Eclipse when I'm doing a Ctrl+F find regex on my book .txt file, but when I run the following code: String regex = "\"[^\"\\\\]*(\\\\.[^\"\\\\]*)*\""; String bookText = "\"What's the matter with the flag?\" inquired Captain MacWhirr. \"Seems all right to me.\""; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(bookText); if(m.find()) System.out.println(m.group(1)); The only thing that prints is null. So am I not converting the regex into a Java string properly? Do I need to take into account the fact that Java Strings have a \" for the double quotes?

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  • matching certain numbers at the end of a string

    - by user697473
    I have a vector of strings: s <- c('abc1', 'abc2', 'abc3', 'abc11', 'abc12', 'abcde1', 'abcde2', 'abcde3', 'abcde11', 'abcde12', 'nonsense') I would like a regular expression to match only the strings that begin with abc and end with 3, 11, or 12. In other words, the regex has to exclude abc1 but not abc11, abc2 but not abc12, and so on. I thought that this would be easy to do with lookahead assertions, but I haven't found a way. Is there one? EDIT: Thanks to posters below for pointing out a serious ambiguity in the original post. In reality, I have many strings. They all end in digits: some in 0, some in 9, some in the digits in between. I am looking for a regex that will match all strings except those that end with a letter followed by a 1 or a 2. (The regex should also match only those strings that start with abc, but that's an easy problem.) I tried to use negative lookahead assertions to create such a regex. But I didn't have any success.

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  • How to extract terms from an HTML document

    - by bookcasey
    I have a HTML document filled with terms that I need to put into a spreadsheet. They follow this basic pattern: <ul> <li class="name"><a href="spot.html">Spot</a></li> <li class="type">Dog</li> <li class="color">Red</li> </ul> <ul> <li class="name"><a href="mittens.html">Mittens</a></li> <li class="type">Cat</li> <li class="color">Brown</li> </ul> <ul> <li class="name"><a href="squakers.html">Squakers</a></li> <li class="type">Little Parrot</li> <li class="color">Rainbow</li> </ul> It's very consistent. I need to extract the string within the li.name a (so, "Spot") but only if the type is "Dog" or "Parrot", and put them in a spreadsheet. I've been trying to use Sublime Text's ability to Find with regex, but I'm really struggling, and since regex and HTML usually don't play nice, I was wondering if there is a better and easier way to accomplish this. Thanks.

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  • fail2ban regex working but no action being taken

    - by fpghost
    I have the following snippet of fail2ban configuration on Ubuntu 13.10 server: #jail.conf [apache-getphp] enabled = true port = http,https filter = apache-getphp action = iptables-multiport[name=apache-getphp, port="http,https", protocol=tcp] mail-whois[name=apache-getphp, dest=root] logpath = /srv/apache/log/access.log maxretry = 1 #filter.d/apache-getphp.conf [Definition] failregex = ^<HOST> - - (?:\[[^]]*\] )+\"(GET|POST) /(?i)(PMA|phptest|phpmyadmin|myadmin|mysql|mysqladmin|sqladmin|mypma|admin|xampp|mysqldb|mydb|db|pmadb|phpmyadmin1|phpmyadmin2|cgi-bin) ignoreregex = I know the regex is good, because if I run the test command on my access.log: fail2ban-regex /srv/apache/log/access.log /etc/fail2ban/filter.d/apache-getphp.conf I get a SUCCESS result with multiple hits, and in my log I see entries like 187.192.89.147 - - [13/Apr/2014:11:36:03 +0100] "GET /phpTest/zologize/axa.php HTTP/1.1" 301 585 "-" "-" 187.192.89.147 - - [13/Apr/2014:11:36:03 +0100] "GET /phpMyAdmin/scripts/setup.php HTTP/1.1" 301 593 "-" "-" Secondly I know email is configured correctly, as each time I service fail2ban restart I get an email for each of the filters stopping/starting. However despite all this no action seems to be taken when one of these requests comes in. No email with whois, and no entries in iptables. What possibly could be preventing fail2ban from taking action? (everything looks in order in fail2ban-client -d and I can see the chains have loaded with iptables -L)

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