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| Header  | headerNew (void) | 
|   | Create new (empty) header instance.  More...
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| Header  | headerFree (Header h) | 
|   | Dereference a header instance.  More...
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| Header  | headerLink (Header h) | 
|   | Reference a header instance.  More...
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| unsigned int  | headerSizeof (Header h, int magicp) | 
|   | Return size of on-disk header representation in bytes.  More...
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| RPM_GNUC_DEPRECATED void *  | headerUnload (Header h) | 
|   | Convert header to on-disk representation.  More...
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| void *  | headerExport (Header h, unsigned int *bsize) | 
|   | Export header to on-disk representation.  More...
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| Header  | headerReload (Header h, rpmTagVal tag) | 
|   | Convert header to on-disk representation, and then reload.  More...
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| Header  | headerCopy (Header h) | 
|   | Duplicate a header.  More...
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| RPM_GNUC_DEPRECATED Header  | headerLoad (void *uh) | 
|   | Convert header to in-memory representation.  More...
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| RPM_GNUC_DEPRECATED Header  | headerCopyLoad (const void *uh) | 
|   | Make a copy and convert header to in-memory representation.  More...
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| Header  | headerImport (void *blob, unsigned int bsize, headerImportFlags flags) | 
|   | Import header to in-memory representation.  More...
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| Header  | headerRead (FD_t fd, int magicp) | 
|   | Read (and load) header from file handle.  More...
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| int  | headerWrite (FD_t fd, Header h, int magicp) | 
|   | Write (with unload) header to file handle.  More...
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| int  | headerIsEntry (Header h, rpmTagVal tag) | 
|   | Check if tag is in header.  More...
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| int  | headerGet (Header h, rpmTagVal tag, rpmtd td, headerGetFlags flags) | 
|   | Retrieve tag value.  More...
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| int  | headerPut (Header h, rpmtd td, headerPutFlags flags) | 
|   | Add or append tag to header.  More...
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| int  | headerAddI18NString (Header h, rpmTagVal tag, const char *string, const char *lang) | 
|   | Add locale specific tag to header.  More...
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| int  | headerMod (Header h, rpmtd td) | 
|   | Modify tag in header.  More...
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| int  | headerDel (Header h, rpmTagVal tag) | 
|   | Delete tag in header.  More...
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| char *  | headerFormat (Header h, const char *fmt, errmsg_t *errmsg) | 
|   | Return formatted output string from header tags.  More...
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| void  | headerCopyTags (Header headerFrom, Header headerTo, const rpmTagVal *tagstocopy) | 
|   | Duplicate tag values from one header into another.  More...
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| HeaderIterator  | headerFreeIterator (HeaderIterator hi) | 
|   | Destroy header tag iterator.  More...
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| HeaderIterator  | headerInitIterator (Header h) | 
|   | Create header tag iterator.  More...
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| int  | headerNext (HeaderIterator hi, rpmtd td) | 
|   | Return next tag contents from header.  More...
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| rpmTagVal  | headerNextTag (HeaderIterator hi) | 
|   | Return next tag number from header.  More...
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| char *  | headerGetAsString (Header h, rpmTagVal tag) | 
|   | Return any non-array tag from header, converted to string.  More...
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| const char *  | headerGetString (Header h, rpmTagVal tag) | 
|   | Return a simple string tag from header.  More...
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| uint64_t  | headerGetNumber (Header h, rpmTagVal tag) | 
|   | Return a simple number tag (or extension) from header.  More...
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| int  | headerIsSource (Header h) | 
|   | Check if header is a source or binary package header.  More...
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| unsigned int  | headerGetInstance (Header h) | 
|   | Return header instance, ie is the header from rpmdb.  More...
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| int  | headerConvert (Header h, int op) | 
|   | Convert header to/from (legacy) data presentation.  More...
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| int  | headerPutBin (Header h, rpmTagVal tag, const uint8_t *val, rpm_count_t size) | 
|   | Type-safe methods for inserting tag data to header.  More...
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| int  | headerPutString (Header h, rpmTagVal tag, const char *val) | 
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| int  | headerPutStringArray (Header h, rpmTagVal tag, const char **val, rpm_count_t size) | 
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| int  | headerPutChar (Header h, rpmTagVal tag, const char *val, rpm_count_t size) | 
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| int  | headerPutUint8 (Header h, rpmTagVal tag, const uint8_t *val, rpm_count_t size) | 
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| int  | headerPutUint16 (Header h, rpmTagVal tag, const uint16_t *val, rpm_count_t size) | 
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| int  | headerPutUint32 (Header h, rpmTagVal tag, const uint32_t *val, rpm_count_t size) | 
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| int  | headerPutUint64 (Header h, rpmTagVal tag, const uint64_t *val, rpm_count_t size) | 
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An rpm header carries all information about a package. 
A header is a collection of data elements called tags. Each tag has a data type, and includes 1 or more values. 
Definition in file header.h.