Thierry Vignaud > RPM4-0.31 > RPM4::Header

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NAME ^

RPM4::Header

DESCRIPTION ^

The header contains informations about a rpms, this object give methods to manipulate its.

METHODS ^

RPM4::Header->new($item)

Create a new RPM4::Header instance from:

a file

if $item is an rpm file, returns the corresponding object.

a file handler

if $item is a file handler, returns an object corresponding to the next header there.

nothing

if $item is omitted, returns an empty object.

If data are unreadable for whatever reason, returns undef.

write(*FILE)

Dump header data into file handle.

Warning: Perl modifier (like PerlIO::Gzip) won't works.

hsize()

Returns the on-disk size of header data, in bytes.

copy()

Returns a RPM4::Header object copy.

removetag(tagid)

Remove tag 'tagid' from header.

addtag(tagid, tagtype, value1, value2...)

Add a tag into the header: - tagid is the integervalue of tag - tagtype is an integer, it identify the tag type to add (see rpmlib headers files). Other argument are value to put in tag.

listtag()

Returns a list of tag id present in header.

hastag(tagid)

Returns true if tag 'tagid' is present in header.

Ex: $header->hastag(1000); # Returns true if tag 'NAME' is present.

tagtype(tagid)

Returns the tagtype value of tagid. Returns 0 if tagid is not found.

tag(tagid)

Returns array of tag value for tag 'tagid'.

    $header->tag(1000); # return the name of rpm header.

queryformat($query)

Make a formated query on the header, macros in $query are evaluated. This function works like rpm --queryformat ...

    $header->queryformat("%{NAME}-%{VERSION}-%{RELEASE}");

fullname

In scalar context return the "name-version-version.arch" of package. In array context return (name, version, release, arch) of package.

issrc()

Returns true if package is a source package.

compare(header)

Compare the header to another, return 1 if the object is higher, -1 if header passed as argument is better, 0 if update is not possible.

dep($deptype)

Return a RPM4::Header::Dependencies object containing dependencies of type $deptype found in the header.

files()

Return a RPM4::Header::Files object containing the set of files include in the rpm.

SEE ALSO ^

RPM4

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