contrib/rpm/usr/include/rpm/rpmtd.h
#ifndef _RPMTD_H
#define _RPMTD_H
#include <rpm/rpmtypes.h>
#include <rpm/argv.h>
#ifdef __cplusplus
extern "C" {
#endif
enum rpmtdFlags_e {
RPMTD_NONE = 0,
RPMTD_ALLOCED = (1 << 0), /* was memory allocated? */
RPMTD_PTR_ALLOCED = (1 << 1), /* were array pointers allocated? */
RPMTD_IMMUTABLE = (1 << 2), /* header data or modifiable? */
RPMTD_ARGV = (1 << 3), /* string array is NULL-terminated? */
};
typedef rpmFlags rpmtdFlags;
/** \ingroup rpmtd
* Container for rpm tag data (from headers or extensions).
* @todo Make this opaque (at least outside rpm itself)
*/
struct rpmtd_s {
rpm_tag_t tag; /* rpm tag of this data entry*/
rpm_tagtype_t type; /* data type */
rpm_count_t count; /* number of entries */
rpm_data_t data; /* pointer to actual data */
rpmtdFlags flags; /* flags on memory allocation etc */
int ix; /* iteration index */
};
/** \ingroup rpmtd
* Create new tag data container
* @return New, initialized tag data container.
*/
rpmtd rpmtdNew(void);
/** \ingroup rpmtd
* Destroy tag data container.
* @param td Tag data container
* @return NULL always
*/
rpmtd rpmtdFree(rpmtd td);
/** \ingroup rpmtd
* (Re-)initialize tag data container. Contents will be zeroed out
* and iteration index reset.
* @param td Tag data container
*/
void rpmtdReset(rpmtd td);
/** \ingroup rpmtd
* Free contained data. This is always safe to call as the container knows
* if data was malloc'ed or not. Container is reinitialized.
* @param td Tag data container
*/
void rpmtdFreeData(rpmtd td);
/** \ingroup rpmtd
* Retrieve array size of the container. For non-array types this is always 1.
* @param td Tag data container
* @return Number of entries in contained data.
*/
rpm_count_t rpmtdCount(rpmtd td);
/** \ingroup rpmtd
* Retrieve tag of the container.
* @param td Tag data container
* @return Rpm tag.
*/
rpmTagVal rpmtdTag(rpmtd td);
/** \ingroup rpmtd
* Retrieve type of the container.
* @param td Tag data container
* @return Rpm tag type.
*/
rpmTagType rpmtdType(rpmtd td);
/** \ingroup rpmtd
* Retrieve class of the container.
* @param td Tag data container
* @return Rpm tag class
*/
rpmTagClass rpmtdClass(rpmtd td);
/** \ingroup rpmtd
* Retrieve current iteration index of the container.
* @param td Tag data container
* @return Iteration index (or -1 if not iterating)
*/
int rpmtdGetIndex(rpmtd td);
/** \ingroup rpmtd
* Set iteration index of the container.
* If new index is out of bounds for the container, -1 is returned and
* iteration index is left untouched.
* @param td Tag data container
* @param index New index
* @return New index, or -1 if index out of bounds
*/
int rpmtdSetIndex(rpmtd td, int index);
/** \ingroup rpmtd
* Initialize tag container for iteration
* @param td Tag data container
* @return 0 on success
*/
int rpmtdInit(rpmtd td);
/** \ingroup rpmtd
* Iterate over tag data container.
* @param td Tag data container
* @return Tag data container iterator index, -1 on termination
*/
int rpmtdNext(rpmtd td);
/** \ingroup rpmtd
* Iterate over uint32_t type tag data container.
* @param td Tag data container
* @return Pointer to next value, NULL on termination or error
*/
uint32_t *rpmtdNextUint32(rpmtd td);
/** \ingroup rpmtd
* Iterate over uint64_t type tag data container.
* @param td Tag data container
* @return Pointer to next value, NULL on termination or error
*/
uint64_t *rpmtdNextUint64(rpmtd td);
/** \ingroup rpmtd
* Iterate over string / string array type tag data container.
* @param td Tag data container
* @return Pointer to next value, NULL on termination or error
*/
const char *rpmtdNextString(rpmtd td);
/** \ingroup rpmtd
* Return char data from tag container.
* For scalar return type, just return pointer to the integer. On array
* types, return pointer to current iteration index. If the tag container
* is not for char type, NULL is returned.
* @param td Tag data container
* @return Pointer to uint16_t, NULL on error
*/
char *rpmtdGetChar(rpmtd td);
/** \ingroup rpmtd
* Return uint16_t data from tag container.
* For scalar return type, just return pointer to the integer. On array
* types, return pointer to current iteration index. If the tag container
* is not for int16 type, NULL is returned.
* @param td Tag data container
* @return Pointer to uint16_t, NULL on error
*/
uint16_t * rpmtdGetUint16(rpmtd td);
/** \ingroup rpmtd
* Return uint32_t data from tag container.
* For scalar return type, just return pointer to the integer. On array
* types, return pointer to current iteration index. If the tag container
* is not for int32 type, NULL is returned.
* @param td Tag data container
* @return Pointer to uint32_t, NULL on error
*/
uint32_t * rpmtdGetUint32(rpmtd td);
/** \ingroup rpmtd
* Return uint64_t data from tag container.
* For scalar return type, just return pointer to the integer. On array
* types, return pointer to current iteration index. If the tag container
* is not for int64 type, NULL is returned.
* @param td Tag data container
* @return Pointer to uint64_t, NULL on error
*/
uint64_t * rpmtdGetUint64(rpmtd td);
/** \ingroup rpmtd
* Return string data from tag container.
* For string types, just return the string. On string array types,
* return the string from current iteration index. If the tag container
* is not for a string type, NULL is returned.
* @param td Tag data container
* @return String constant from container, NULL on error
*/
const char * rpmtdGetString(rpmtd td);
/** \ingroup rpmtd
* Return numeric value from tag container.
* Returns the value of numeric container (RPM_NUMERIC_CLASS) from
* current iteration index as uint64_t regardless of its internal
* presentation (8/16/32/64-bit integer).
* @param td Tag data container
* @return Value of current iteration item as uint64_t,
* 0 for non-numeric types (error)
*/
uint64_t rpmtdGetNumber(rpmtd td);
typedef enum rpmtdFormats_e {
RPMTD_FORMAT_STRING = 0, /* plain string (any type) */
RPMTD_FORMAT_ARMOR = 1, /* ascii armor format (bin types) */
RPMTD_FORMAT_BASE64 = 2, /* base64 encoding (bin types) */
RPMTD_FORMAT_PGPSIG = 3, /* pgp/gpg signature (bin types) */
RPMTD_FORMAT_DEPFLAGS = 4, /* dependency flags (int types) */
RPMTD_FORMAT_FFLAGS = 5, /* file flags (int types) */
RPMTD_FORMAT_PERMS = 6, /* permission string (int types) */
RPMTD_FORMAT_TRIGGERTYPE = 7, /* trigger types (int types) */
RPMTD_FORMAT_XML = 8, /* xml format (any type) */
RPMTD_FORMAT_OCTAL = 9, /* octal format (int types) */
RPMTD_FORMAT_HEX = 10, /* hex format (int types) */
RPMTD_FORMAT_DATE = 11, /* date format (int types) */
RPMTD_FORMAT_DAY = 12, /* day format (int types) */
RPMTD_FORMAT_SHESCAPE = 13, /* shell escaped (any type) */
RPMTD_FORMAT_ARRAYSIZE = 14, /* size of contained array (any type) */
RPMTD_FORMAT_DEPTYPE = 15, /* dependency types (int types) */
RPMTD_FORMAT_FSTATE = 16, /* file states (int types) */
RPMTD_FORMAT_VFLAGS = 17, /* file verify flags (int types) */
RPMTD_FORMAT_EXPAND = 18, /* macro expansion (string types) */
RPMTD_FORMAT_FSTATUS = 19, /* file verify status (int types) */
} rpmtdFormats;
/** \ingroup rpmtd
* Format data from tag container to string presentation of given format.
* Return malloced string presentation of current data in container,
* converting from integers etc as necessary. On array types, data from
* current iteration index is used for formatting.
* @param td Tag data container
* @param fmt Format to apply
* @param errmsg Error message from conversion (or NULL)
* @return String representation of current data (malloc'ed),
* NULL on error
*/
char *rpmtdFormat(rpmtd td, rpmtdFormats fmt, const char *errmsg);
/** \ingroup rpmtd
* Set container tag and type.
* For empty container, any valid tag can be set. If the container has
* data, changing is only permitted to tag of same type.
* @param td Tag data container
* @param tag New tag
* @return 1 on success, 0 on error
*/
int rpmtdSetTag(rpmtd td, rpmTagVal tag);
/** \ingroup rpmtd
* Construct tag container from uint8_t pointer.
* Tag type is checked to be of compatible type (CHAR, INT8 or BIN).
* For non-array types (BIN is a special case of INT8 array)
* count must be exactly 1.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param data Pointer to uint8_t (value or array)
* @param count Number of entries
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromUint8(rpmtd td, rpmTagVal tag, uint8_t *data, rpm_count_t count);
/** \ingroup rpmtd
* Construct tag container from uint16_t pointer.
* Tag type is checked to be of INT16 type. For non-array types count
* must be exactly 1.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param data Pointer to uint16_t (value or array)
* @param count Number of entries
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromUint16(rpmtd td, rpmTagVal tag, uint16_t *data, rpm_count_t count);
/** \ingroup rpmtd
* Construct tag container from uint32_t pointer.
* Tag type is checked to be of INT32 type. For non-array types count
* must be exactly 1.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param data Pointer to uint32_t (value or array)
* @param count Number of entries
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromUint32(rpmtd td, rpmTagVal tag, uint32_t *data, rpm_count_t count);
/** \ingroup rpmtd
* Construct tag container from uint64_t pointer.
* Tag type is checked to be of INT64 type. For non-array types count
* must be exactly 1.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param data Pointer to uint64_t (value or array)
* @param count Number of entries
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromUint64(rpmtd td, rpmTagVal tag, uint64_t *data, rpm_count_t count);
/** \ingroup rpmtd
* Construct tag container from a string.
* Tag type is checked to be of string type.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param data String to use
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromString(rpmtd td, rpmTagVal tag, const char *data);
/** \ingroup rpmtd
* Construct tag container from a string array.
* Tag type is checked to be of string or string array type. For non-array
* types count must be exactly 1.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param data Pointer to string array
* @param count Number of entries
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromStringArray(rpmtd td, rpmTagVal tag, const char **data, rpm_count_t count);
/** \ingroup rpmtd
* Construct tag container from ARGV_t array.
* Tag type is checked to be of string array type and array is checked
* to be non-empty.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param argv ARGV array
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromArgv(rpmtd td, rpmTagVal tag, ARGV_t argv);
/** \ingroup rpmtd
* Construct tag container from ARGI_t array.
* Tag type is checked to be of integer array type and array is checked
* to be non-empty.
* @param td Tag data container
* @param tag Rpm tag to construct
* @param argi ARGI array
* @return 1 on success, 0 on error (eg wrong type)
*/
int rpmtdFromArgi(rpmtd td, rpmTagVal tag, ARGI_t argi);
/* \ingroup rpmtd
* Perform deep copy of container.
* Create a modifiable copy of tag data container (on string arrays each
* string is separately allocated)
* @todo Only string arrays types are supported currently
* @param td Container to copy
* @return New container or NULL on error
*/
rpmtd rpmtdDup(rpmtd td);
#ifdef __cplusplus
}
#endif
#endif /* _RPMTD_H */