I'm looking for a way to have auto-completion on an Gtk.Entry for mime-type.
I'm sure there is a better way than declare
const string MIME_TYPES[] = { ... };
Maybe using an existing linux (gnome) library dealing with mime-types.
On Arch there is a package called "mime-types" providing the file /etc/mime.types lisintg something like 2000 types.
How can I use this file, is it a good solution or is it to specific to arch ?
thanks
string mime = File.new_for_uri(uri).query_info ("standard::content-type", 0, null).get_content_type ();
Related
Is it possible to get URL fragment parameters in C under glib ?
I've got a url like file://localhost/home/me/notepad.txt#line=100,2
What's the best way to get the parameters specified at the end of the url ?
There’s no single GLib function which will do what you want. If you can use libsoup (also part of the GNOME stack), then you can do it using SoupURI:
g_autoptr(SoupURI) uri = soup_uri_new (uri_string);
const gchar *fragment = soup_uri_get_fragment (uri);
That will set fragment to line=100,2. You’ll have to do further parsing of whatever your fragment format is, by hand. g_strsplit() would be useful for that.
You may also take a look on the function parse_sftp_uri from gnome-terminal terminal-nautilus.c file.
It can be easily adapted for general URIs.
Unsure if you mean to parse notepad.txt#line=100,2 or #line=100,2, nevertheless my answer should work in both cases.
You can use the strrchr() (man strrchr) function to get the last occurence of a character within a string.
Something like:
char *file;
file = strrchr(url, '/') + 1;
I am trying to use C library source files inside my Cocoa Framework which has function named
void swe_set_ephe_path(char *path);
Which will basically be
swe_set_ephe_path(”C:\\SWEPH\\EPHE”);
for windows.
This library contains other data files which only work after this function is set.
When imported to Swift the function looks like this
swe_set_ephe_path(path: UnsafeMutablePointer<Int8!>)
Since i want to bundle up all the data files in framework and use it in my application, i have done something like this
public class SwissEphemeris {
public init() {
let path = Bundle.main.bundlePath
let swePath = UnsafeMutablePointer<Int8>(mutating: (path as NSString).utf8String)
swe_set_ephe_path(swePath)
}
}
But it seems it's not working and the functions which needs data to be searched in files are not able to operate.
If anybody interested to look into Swiss library documentation, check here for the link,
https://www.astro.com/swisseph/swephprg.htm#_Toc505244836
There are two problems:
First, the resource files are in the “Resources” subdirectory of the framework, not in the top-level framework directory. You can obtain a path to that directory with
let resourcePath = Bundle(identifier: "com.Abhi.SwissFramework")!.resourcePath!
or with
let resourcePath = Bundle(for: type(of: self)).resourcePath!
I suggest to force-unwrap the optionals because you know that the bundle and the resources directory exist. A failure would indicate a build problem which should be detected early.
Second, the C function takes a char * argument even though it does not mutate the passed string. Here you can use the approach from UnsafeMutablePointer<Int8> from String in Swift:
resourcePath.withCString {
swe_set_ephe_path(UnsafeMutablePointer(mutating: $0))
}
Even better: use the dedicated method withUnsafeFileSystemRepresentation() to get the file system representation of the resource path as a C string:
let resourceURL = Bundle(for: type(of: self)).resourceURL!
resourceURL.withUnsafeFileSystemRepresentation {
swe_set_ephe_path(UnsafeMutablePointer(mutating: $0))
}
I am using MS VS2008 to build my application. I need to use "GUID_DEVINTERFACE_NET " class to get the device interface list. But i could not find the reference to this class. I have even tried in MS VS2015 but could not the reference.
Below is the code snippet.
ULONG DeviceListLength = 0;
cr = CM_Get_Device_Interface_List_SizeW(&DeviceListLength,
(LPGUID)&GUID_DEVINTERFACE_NET,
NULL,
CM_GET_DEVICE_INTERFACE_LIST_PRESENT);
The Microsoft online documentation is not very detailed, but it does mention the header file Ndisguid.h. The filename might use a different case, but the Windows file system is not case-sensitive anyway:
#include <ndisguid.h>
references:
https://msdn.microsoft.com/en-us/library/windows/hardware/ff545922(v=vs.85).aspx
https://msdn.microsoft.com/en-us/library/windows/hardware/ff538471(v=vs.85).aspx
I am building a framework for my day-to-day tasks. I am programming in scala using a lot of type parameter.
Now my goal is to save datastructures to files (e.g. xml files). But I realized that it is not possible using xml files. As I am new to this kind of problem I am asking:
Is there a way to store the types of my datastructures in a file??? Is there a way in scala???
Okay guys. You did a great job basicly by naming the thing I searched for.
Its serialization.
With this in mind I searched the web and was completly astonished by this feature of java.
Now I do something like:
object Serialize {
def write[A](o: A): Array[Byte] = {
val ba = new java.io.ByteArrayOutputStream(512)
val out = new java.io.ObjectOutputStream(ba)
out.writeObject(o)
out.close()
ba.toByteArray()
}
def read[A](buffer: Array[Byte]): A = {
val in = new java.io.ObjectInputStream(new java.io.ByteArrayInputStream(buffer))
in.readObject().asInstanceOf[A]
}
}
The resulting Byte-Arrays can be written to a file and everthing works well.
And I am totaly fine that this solution is not human readable. If my mind changes someday. There are JSON-parser allover the web.
Does Octave have a good way to let the user select an input file? I've seen code like this for Matlab, but doesn't work in Octave.
A gui based method would be preferred, but some sort of command-line choice would work also. It would be great if there were some way to do this that would work in both Matlab and Octave.
I found this for Matlab but it does not work in Octave, even when you install Octave Forge Java package for the listdlg function. In Octave, dir() gives you:
647x1 struct array containing the fields:
name
date
bytes
isdir
datenum
statinfo
but I don't know how to convert this to an array of strings listdlg expects.
You have already the Octave Forge java package installed, so you can create instances of any java class and call any java method.
For example to create a JFileChooser and call the JFileChooser.showOpenDialog(Component parent) method:
frame = javaObject("javax.swing.JFrame");
frame.setBounds(0,0,100,100);
frame.setVisible(true);
fc = javaObject ("javax.swing.JFileChooser")
returnVal = fc.showOpenDialog(frame);
file = fc.getSelectedFile();
file.getName()
Btw. I had some troubles installing the package.
Here is a fix for Ubuntu. that worked also for my Debian Testing.
EDIT
#NoBugs In reply to your comment:
If you need to use listdlg you can do the following:
d = dir;
str = {d.name};
[sel,ok] = listdlg('PromptString','Select a file:',...
'SelectionMode','single',...
'ListString',str);
if ok == 1
disp(str{sel(1)});
end
This should be compatible with matlab, by I cannot test it right now.
If you want to select multiple files use this:
d = dir;
str = {d.name};
[sel,ok] = listdlg('PromptString','Select a file:',...
'SelectionMode','multiple',...
'ListString',str);
if ok == 1
imax = length(sel);
for i=1:1:imax
disp(str{sel(i)});
end
end
I never came across an open-file-dialog in octave.
If you are looking for a gui based method maybe guioctave can help you. I never used it, because it appears only be available for windows machines.
A possible solution would be to write a little script in octave, that would allow the user to parse through the directories and select a file like that.
Thought I'd provide an updated answer to this old question, since it is appearing in the 'related questions' field for other questions.
Octave provides the uigetdir and uigetfile functions, which do what you expect.