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ZZIP_DISK_ENTRY_TO_D(3)      zziplib Function List     ZZIP_DISK_ENTRY_TO_D(3)




NAME

       zzip_disk_entry_to_data, zzip_disk_entry_to_file_header,
       zzip_disk_entry_strdup_name, zzip_disk_entry_strdup_comment - helper
       functions for (mmapped) zip access api


SYNOPSIS

       #include <zzip/mmapped.h>

       zzip_byte_t *
                                             zzip_disk_entry_to_data(3) * disk, struct zzip_disk_entry * entry));

       struct zzip_file_header *
                                                                zzip_disk_entry_to_file_header((ZZIP_DISK * disk, struct zzip_disk_entry *entry));

       zzip__new__ char *
                                                      zzip_disk_entry_strdup_name((ZZIP_DISK * disk, struct zzip_disk_entry *entry));

       zzip__new__ char *
                                                         zzip_disk_entry_strdup_comment((ZZIP_DISK * disk, struct zzip_disk_entry *entry));


DESCRIPTION

       The zzip_disk_entry_to_data function augments the other
       zzip_disk_entry_* helpers: here we move a disk_entry pointer (as
       returned by _find* functions) into a pointer to the data block right
       after the file_header. Only disk->buffer would be needed to perform the
       seek but we check the mmapped range end as well.

       The zzip_disk_entry_to_data function returns a pointer into
       disk->buffer or 0 on error (errno).

       The zzip_disk_entry_to_file_header function does half the job of
       zzip_disk_entry_to_data where it can augment with
       zzip_file_header_to_data helper from format/fetch.h

       The zzip_disk_entry_to_file_header function returns a pointer into
       disk->buffer or 0 on error (errno).

       The zzip_disk_entry_strdup_name function is a big helper despite its
       little name: in a zip file the encoded filenames are usually NOT
       zero-terminated but for common usage with libc we need it that way.
       Secondly, the filename SHOULD be present in the zip central directory
       but if not then we fallback to the filename given in the file_header of
       each compressed data portion.

       The zzip_disk_entry_strdup_name function returns a new string buffer,
       or null on error. If no name can be found then an empty string is
       returned.

       The zzip_disk_entry_strdup_comment function is similar creating a
       reference to a zero terminated string but it can only exist in the zip
       central directory entry.

       The zzip_disk_entry_strdup_comment function returns a new string
       buffer, or null on error (errno). If no name can be found then an empty
       string is returned.


AUTHOR

       o   Guido Draheim <guidod@gmx.de>


COPYRIGHT

       Copyright (c)Guido Draheim, use under copyleft (LGPL,MPL)



zziplib                             0.13.65            ZZIP_DISK_ENTRY_TO_D(3)

libzzip 0.13.66 - Generated Tue May 23 16:06:54 CDT 2017
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