extract text from pdf using javascript

extract text from pdf file using javascript

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Listing 11-14. Retrieving the Current IP Address gchar* my_ip_address_get_address (MyIPAddress *ipaddress) { MyIPAddressPrivate *priv = MY_IP_ADDRESS_GET_PRIVATE (ipaddress); return g_strdup_printf ("%d.%d.%d.%d", priv->address[0], priv->address[1], priv->address[2], priv->address[3]); } The last function, my_ip_address_set_address(), applies programmatic changes to the IP address and is displayed in Listing 11-15. You will notice that the function filters out numbers that are less than 0 or greater than 255. By doing this, the programmer does not have to provide new values for every IP address number. This means that we only need to provide one function for programmatically updating the IP address, since the programmer can update a single value with it. Listing 11-15. Setting a New IP Address void my_ip_address_set_address (MyIPAddress *ipaddress, gint address[4]) { MyIPAddressPrivate *priv = MY_IP_ADDRESS_GET_PRIVATE (ipaddress); guint i; for (i = 0; i < 4; i++) { if (address[i] >= 0 && address[i] <= 255) { priv->address[i] = address[i]; } } my_ip_address_render (ipaddress); g_signal_emit_by_name ((gpointer) ipaddress, "ip-changed"); }

The output of Listing 5-9 is as follows:

The last step in this example is to test whether the widget works. The code in Listing 11-16 creates a window with a new MyIPAddress widget. An initial IP address of 1.20.35.255 is added, and the ip-changed signal is connected to a callback function that prints the current state of the IP address.

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However, the real time for development is four months, and as a result testing has to be accomplished in one month Testing suffers because it s forced to make up for the lost time that development or the earlier steps exceeded Sadly, too often people use a result that s only tested somewhat, and offer a service pack or hot fix if there are any serious problems This isn t what the customer wants or needs Imagine creating a car, and saying, Yeah, sometimes the wheels fall off, but let s get the car out, and if that problem happens, we ll fix it The problem is that people use cars to do critical tasks, such as dropping off children, driving people to the doctor, and picking up groceries If a wheel were to drop off, a chain of disasters would ensue.

The following exercise instructs you to create a text editing application with basic functionality. It will give you practice on interacting with a GtkTextView widget.

The CLI Library (or .NET Framework) provides the System::Console class for performing most simple I/O functions. You ve been using the WriteLine method for quite some time now. WriteLine has an overload that uses the same format string and variable argument list as String::Format. All the formatting rules described earlier for String::Format apply to Console::WriteLine and, incidentally, to Console::Write, which is just like WriteLine except that it does not automatically append a newline to its output. Other overloads of WriteLine and Write omit the format parameter and simply output a representation of the object rendered as text in the default format. Write and WriteLine contain overloads that take all of the primitive types as well as arrays of Char (wchar_t). Listing 5-10 uses various overloads of Write and WriteLine. Listing 5-10. Using Write and WriteLine // writeline.cpp using namespace System; int main() { // output without newline Console::Write("a"); Console::Write("b"); Console::Write("c"); // newline alone Console::WriteLine(); // output with format string Console::WriteLine("Fourscore and {0} years ago.", 7); // output with direct types Console::WriteLine(7); Console::WriteLine( 1.05); Console::WriteLine('A'); }

My point is that these types of application problems aren t necessary Applications will suffer, and have suffered, because of this lack of attention to testing I m.

Use the GtkTextView widget to create a simple text editor. You should provide the ability to perform multiple text editing functions, including creating a new document, opening a file, saving a file, searching the document, cutting text, copying text, and pasting text. When creating a new document, you should make sure the user actually wants to continue, because all changes will be lost. When the Save button is pressed, it should always ask where to save the file. Once you have finished this exercise, one possible solution is shown in Appendix F. Hint: This is a much larger GTK+ application than any that has previously been created in this book, so you may want to take a few minutes to plan out your solution on paper before diving right into the code. Then, implement one function at a time, making sure it works before continuing on to the next feature. We will expand on this exercise in later chapters as well, so keep your solution handy!

The Console class exposes the Out, Error, and In properties as abstractions for the standard filestreams stdout, stderr, and stdin. Out, Error, and In are represented as objects of the System::IO::TextWriter and TextReader classes.

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