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The object of this plug-in is to remove the oldest message from the datafile and add the new message if, that is, the new message is not a repeat, or flood control has not been enabled The first thing it does if the datafile doesn t exist is create it by putting together a collection of dummy blank posts in $data Each post is of the form: number|recipient| sender|message The | symbols serving to separate the parts Therefore if, for example, the value in $maxposts is 20, then $data will be populated with 20 |||\n strings This ensures that, for an initial chat file, all fields in each post are blank and that each is terminated with a \n newline to separate records from each other This whole string is then saved to $datafile using the file_put_contents() function At this point there is definitely a datafile of posts, either one just created or one that was preexisting So now the arguments passed to the plug-in are checked If $message is blank, or either of $from or $to contains a banned | symbol, then there was a problem In the former case, there is nothing to post, and in the latter the | symbols would corrupt the datafile and therefore are not allowed Ideally, when users enter your chatroom you will already have weeded out any such occurrences, but if not, this check will catch them A value of -2 is returned in either case The | symbol can actually be useful in messages, so if any are encountered in $message they are converted to their HTML entity equivalent of | Also, if $message has more characters than the value specified in $maxlength, then $message is passed through the substr() function to truncate it to the maximum length allowed With all the fields now prepared, the datafile is opened using the fopen() function and the file handle for manipulating it is assigned to $fh If $fh is FALSE, the file couldn t be opened and so -1 is returned Otherwise, the flock() function is called (see plug-in 52, Post to Guestbook for further details) to ensure the program has exclusive access to the file so there will be no clashes of concurrent writes With the file lock obtained, the very first line of the file is returned using fgets() This is the oldest post and therefore it will be discarded so the value returned is not used and is simply ignored Next, the string variable $text is assigned the remaining contents of the file using the fread() function, with an argument of 100000 This tells the function to read in at most 100,000 characters from the file, up to the file s end This should be more than you are likely to need because, for example, 20 messages of 1,000 characters each would only occupy 20,000 bytes But you can easily change this value if you need to Next, the argument $floodctrl is checked, and if it has the value on , then no repeated posts are allowed To check for this, the function strpos() is called, which. pdf compression library c# C# tutorial: PDF compression - World Best Learning Center
In this C# tutorial you will learn to compress a new PDF file and existing PDF file in itextsharp. c# compress pdf size Fast PDF Compression Library for .NET | VeryDOC Knowledge Base
17 Oct 2013 ... Question:I need a fast PDF Compression library for . ... applications (majority of programming languages are supported: C# , C++, Delphi, Visual ... 2 (1 45 60) Therefore, the average aircraft delay is about 16 min per arrival The relationship between delay and capacity can be shown by determining the runway service rate which corresponds to a delay of 4 min using the above equation Assuming that the standard deviation of the mean service time is the same, we have . 2 45 (12 3600 + 1 / 2 4 a = 60 2(1 45 / a ) adobe pdf sdk vb.net, convert pdf to excel using itextsharp in c#, .net code 39 reader, ssrs ean 13, extract pdf to excel c#, c# create editable pdf how to compress pdf file size in c# Does iTextSharp Handle PDF Compression? - Stack Overflow
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Compression to compress or zip one of those to a smaller size . But then you would have to decompress or unzip it to display it in a . PDF reader ... or a is equal to 52 arrivals per hour If the delay criterion was that arrival delays could not exceed 4 min then the runway capacity related to delay would be 52 arrivals per hour It should be observed that an increase in capacity from 52 to 60 arrivals per hour, a 15 percent increase in capacity, results in a delay reduction of 24 min, a 60 percent reduction in delay This is typical at airports nearing saturation Small increases in capacity can result in significant decreases in delay c# code to compress pdf file How can I reduce file size of a PDF in C# | The ASP.NET Forums
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Pdf . Here is the code that makes all images bilevel and compressed with fax ... There is also an AGPL licensed C# wrapper for it on github here. returns a value of 0 or greater if a match is found, or FALSE if not The string being checked for is |$to|$from|$message\n, which will ensure that only repeated posts from the same poster, to the same recipient, with the same message will be ignored If the post is a duplicate and flood control is on, then the file lock is released, the file is closed, and a value of 0 is returned Otherwise, the posts in the string variable $text are extracted into the array $lines using the explode() function to split them all out at \n newlines Next, the counter at the start of the last line of chat is extracted into the array $temp This is done by referencing the correct element of $lines and then using explode() to pull all the parts into $temp The plug-in is only interested in the first element of $temp, so that value is looked up and the number 1 is added to increment it This gives the value to use for the message number of the new post being appended the next in sequence Therefore, $text (which contains the remaining chat posts, after ignoring the first one) has the message number appended to it, followed by the contents of $to, $from, and $message, separated by | symbols, and terminated with a \n newline character To update the file s contents, the fseek() command is called to move the read and write pointer into $datafile to the very start You remember that the first post was discarded Well, now all the following posts must be moved back accordingly, so after seeking, the contents of $text are then written to the file starting at position 0 Lastly, because the file is readable and writeable and we have been treating it like random access memory, if the size of the new set of posts is smaller than the previous set, then the file will have some spurious text remaining at its end This has to be discarded by issuing a call to the truncate() function, passing it the exact size of $text The file lock is then released, the file closed, and a value of 1, representing success, is returned. When working with pipelines and loops in Windows PowerShell, you use the automatic variable $_ to handle the current object in the pipeline In 3, we used the Select-Object cmdlet and created a calculated property using a hashtable and the $_ variable Other cmdlets support the $_ variable 7 shows examples of its use with the Where-Object and ForEach-Object cmdlets You can get more information about automatic variables by using the Get-Help cmdlet c# reduce pdf file size itextsharp PDFSharp compress filesize in c# - Stack Overflow
I only know the original PDFsharp , not the Xamarin port: images are deflated automatically using SharpZipLib. Make sure to use appropriate ... pdf compress in c# Windows 8 How to Compress PDF in C# sample in C# for Visual ...
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