regex - Escaping a Ruby String for TextMate's $DIALOG command -

-

calling regex gurus. i'm having trouble right escaping string in ruby can pass command line utility using exec, %x{} or similar. command line command textmate dialog feature, works (run shell script in textmate.):

$dialog -mp "items=('string1','string2', 'string3');" requestitem

but can use nib file specify "path/to/my/nib/file.nib" so, need pass whole command string exec

command = <<string $dialog -mp "items=('string1','string2', 'string3');" "path/to/my/nib/file.nib" string exec command

this works fine naturally. problem running components of items array determined programmatically, need programmatically escape string in way pass $dialog command properly.

so far, have determined need escape single quotes, double quotes, , newline , tab characters. i've tried ton of potential regular expression solutions haven't yet been able land on reliable escaping mechanism. basically, need fill in

class string     def escape_for_dialog         self     end end

with right self.gsub calls escape strings putting parameters. so, let's assume params looked @ runtime, here's think need using same example above:

command = <<string $dialog -mp "items=('#{item1.escape_for_dialog}', '#{item2.escape_for_dialog}', '#{item3.escape_for_dialog}');" "path/to/my/nib/file.nib" string exec command

i have figured out heredoc style helps not having remember escape quotes, parameters still problematic i'm asking better string manipulation , regular expressions lend hand @ filling in string method. i'll grateful! :)

string.inspect escape delimiters & etc. in way makes shell happy:

itemlist = "(#{items.join(', ')})" command = [   $dialog,   '-mp',   itemlist.inspect,   'path/to/my/nib/file.nib', ].join(' ') system(command)

Comments

Post a Comment

Popular posts from this blog

C#: Application without a window or taskbar item (background app) that can still use Console.WriteLine() -

-
i'm trying create application adheres following: no taskbar no console or form window can utilize console.writeline() . (i.e. if executes app command prompt write console.) the problem if create windows form (or wpf) application can have there no taskbar, console or window show up, console.writeline() nothing. if create console app, writes console, can't figure out how hide (and if did hide it, write command prompt window?)... how do this? just create standard console application. callers responsibility hide window caused program (from how run c# console application console hidden ): system.diagnostics.processstartinfo start = new system.diagnostics.processstartinfo(); start.filename = dir + @"\myprocesstostart.exe"; start.windowstyle = system.diagnostics.processwindowstyle.hidden;
Read more

c++ - Convert big endian to little endian when reading from a binary file -

-
this question has answer here: how convert between big-endian , little-endian values in c++? 28 answers i've been looking around how convert big-endian little-endians. didn't find solve problem. seem there's many way can conversion. anyway following code works ok in big-endian system. how should write conversion function work on little-endian system well? this homework, since systems @ school running big-endian system. it's got curious , wanted make work on home computer also #include <iostream> #include <fstream> using namespace std; int main() { ifstream file; file.open("file.bin", ios::in | ios::binary); if(!file) cerr << "not able read" << endl; else { cout << "opened" << endl; int i_var; double d_var; while(!file.eof()) {...
Read more

openssl - Load PKCS#8 binary key into Ruby -

-
i'm trying load particular private key encoded in binary der format ( pkcs#8 ) ruby. however, openssl::pkey won't recognize it. can make work doing console work , transforming pem so: openssl pkcs8 -inform der -in file.key -passin pass:xxxxxxxx >private_key.pem after this, key can correctly read. however, since whole process done in memory instead of writing , reading files. so question is: possible load private keys binary encoded der format ruby/openssl? thank time, fernando yes, can indirectly load pkcs#8 der-encoded private keys using ruby openssl. openssl::pkey::rsa.new handle pem-formatted pkcs#8, easy read binary der , convert pem-formatted string , load string. for example, these der-encoded private keys: $ openssl genrsa | openssl pkcs8 -topk8 -outform der \ -nocrypt -out pkcs8.key $ openssl genrsa | openssl pkcs8 -topk8 -outform der \ -v2 des3 -passout pass:secret -out pkcs8_des3.key you can this: require 'open...
Read more