TIFFWriteDirectory(3T)TIFFWriteDirectory(3T)NAME
TIFFWriteDirectory, TIFFRewriteDirectory - write the cur
rent directory in an open TIFF file
SYNOPSIS
#include <tiffio.h>
int TIFFWriteDirectory(TIFF* tif)
int TIFFRewriteDirectory(TIFF* tif)
DESCRIPTIONTIFFWriteDirectory will write the contents of the current
directory to the file and setup to create a new subfile in
the same file. Applications only need to call TIFFWrite_
Directory when writing multiple subfiles to a single TIFF
file. TIFFWriteDirectory is automatically called by TIFF_
Close and TIFFFlush to write a modified directory if the
file is open for writing.
The TIFFRewriteDirectory function operates similarly to
TIFFWriteDirectory but can be called with directories pre
viously read or written that already have an established
location in the file. It will rewrite the directory, but
instead of place it at it's old location (as TIFFWriteDi_
rectory would) it will place them at the end of the file,
correcting the pointer from the preceeding directory or
file header to point to it's new location. This is par
ticularly important in cases where the size of the direc
tory and pointed to data has grown, so it won't fit in the
space available at the old location.
RETURN VALUES
1 is returned when the contents are successfully written
to the file. Otherwise, 0 is returned if an error was
encountered when writing the directory contents.
DIAGNOSTICS
All error messages are directed to the TIFFError(3T) rou
tine.
Error post-encoding before directory write. Before writ
ing the contents of the current directory, any pending
data are flushed. This message indicates that an error
occurred while doing this.
Error flushing data before directory write. Before writ
ing the contents of the current directory, any pending
data are flushed. This message indicates that an error
occurred while doing this.
Cannot write directory, out of space. There was not
enough space to allocate a temporary area for the direc
tory that was to be written.
Error writing directory count. A write error occurred
when writing the count of fields in the directory.
Error writing directory contents. A write error occurred
when writing the directory fields.
Error writing directory link. A write error occurred when
writing the link to the next directory.
Error writing data for field "%s". A write error occurred
when writing indirect data for the specified field.
Error writing TIFF header. A write error occurred when
re-writing header at the front of the file.
Error fetching directory count. A read error occurred
when fetching the directory count field for a previous
directory. This can occur when setting up a link to the
directory that is being written.
Error fetching directory link. A read error occurred when
fetching the directory link field for a previous direc
tory. This can occur when setting up a link to the direc
tory that is being written.
SEE ALSOlibtiff(3T), TIFFOpen(3T), TIFFError(3T), TIFFReadDirec_
tory(3T), TIFFSetDirectory(3T)
September 26, 2001 TIFFWriteDirectory(3T)
