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Special Forums UNIX and Linux Applications Infrastructure Monitoring modifying existing file using C Post 302449372 by Corona688 on Monday 30th of August 2010 11:22:07 AM
Old 08-30-2010
There is no "insert" operation for files, and never has been. Text editors and the like accomplish it by reading the entire file into memory then writing back the data they want. Anything after the change will have to be rewritten if the length changes. (The file might even need to be truncated, if it ended up shorter than before.)
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Text::PDF::Dict(3pm)					User Contributed Perl Documentation				      Text::PDF::Dict(3pm)

NAME
Text::PDF::Dict - PDF Dictionaries and Streams. Inherits from PDF::Objind INSTANCE VARIABLES
There are various special instance variables which are used to look after, particularly, streams. Each begins with a space: stream Holds the stream contents for output streamfile Holds the stream contents in an external file rather than in memory. This is not the same as a PDF file stream. The data is stored in its unfiltered form. streamloc If both ' stream' and ' streamfile' are empty, this indicates where in the source PDF the stream starts. METHODS
$d->outobjdeep($fh) Outputs the contents of the dictionary to a PDF file. This is a recursive call. It also outputs a stream if the dictionary has a stream element. If this occurs then this method will calculate the length of the stream and insert it into the stream's dictionary. $d->read_stream($force_memory) Reads in a stream from a PDF file. If the stream is greater than "PDF::Dict::mincache" (defaults to 32768) bytes to be stored, then the default action is to create a file for it somewhere and to use that file as a data cache. If $force_memory is set, this caching will not occur and the data will all be stored in the $self->{' stream'} variable. $d->val Returns the dictionary, which is itself. $d->copy($inpdf, $res, $unique, $outpdf, %opts) Copies an object. See Text::PDF::Objind::Copy() for details perl v5.8.8 2006-09-09 Text::PDF::Dict(3pm)
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