In-core package database parsing and reading

Collaboration diagram for In-core package database parsing and reading:

Data Structures
struct	parsedb_state
struct	field_state
struct	fieldinfo

Macros
#define	parse_at_eof(ps)   ((ps)->dataptr >= (ps)->endptr)
#define	parse_getc(ps)   *(ps)->dataptr++
#define	parse_ungetc(c, ps)   (ps)->dataptr--
#define	STRUCTFIELD(klass, off, type)   (*(type *)((uintptr_t)(klass) + (off)))
#define	PKGIFPOFF(f)   (offsetof(struct pkgbin, f))
#define	ARCHIVEFOFF(f)   (offsetof(struct archivedetails, f))
#define	FIELD(name)   name, sizeof(name) - 1
#define	MSDOS_EOF_CHAR   '\032' /* ^Z */

Typedefs
typedef void	parse_field_func(struct parsedb_state *ps, struct field_state *fs, void *parse_obj)
typedef void	freadfunction(struct pkginfo *pkg, struct pkgbin *pkgbin, struct parsedb_state *ps, const char *value, const struct fieldinfo *fip)
typedef void	fwritefunction(struct varbuf *, const struct pkginfo *, const struct pkgbin *, enum fwriteflags flags, const struct fieldinfo *)

Enumerations
enum	parsedbtype { pdb_file_update , pdb_file_status , pdb_file_control , pdb_file_available }
	Parse action. More...

Functions
struct parsedb_state *	parsedb_new (const char *filename, int fd, enum parsedbflags flags)
	Create a new deb822 parser context.
struct parsedb_state *	parsedb_open (const char *filename, enum parsedbflags flags)
	Open a file for deb822 parsing.
void	parsedb_load (struct parsedb_state *ps)
	Load data for package deb822 style parsing.
int	parsedb_parse (struct parsedb_state *ps, struct pkginfo **pkgp)
	Parse deb822 style package data from a buffer.
void	parsedb_close (struct parsedb_state *ps)
	Teardown a package deb822 parser context.
bool	parse_stanza (struct parsedb_state *ps, struct field_state *fs, parse_field_func *parse_field, void *parse_obj)
	Parse an RFC-822 style stanza.
void	varbuf_add_arbfield (struct varbuf *vb, const struct arbitraryfield *arbfield, enum fwriteflags flags)
int	parse_db_version (struct parsedb_state *ps, struct dpkg_version *version, const char *value) DPKG_ATTR_REQRET
	Parse a version string coming from a database file.
void	parse_error (struct parsedb_state *ps, const char *fmt,...) DPKG_ATTR_NORET DPKG_ATTR_PRINTF(2)
void	parse_warn (struct parsedb_state *ps, const char *fmt,...) DPKG_ATTR_PRINTF(2)
void	parse_lax_problem (struct parsedb_state *ps, enum parsedbflags flags_lax, const char *fmt,...) DPKG_ATTR_PRINTF(3)
void	parse_problem (struct parsedb_state *ps, const char *fmt,...) DPKG_ATTR_PRINTF(2)
void	parse_must_have_field (struct parsedb_state *ps, const char *value, const char *what)
void	parse_ensure_have_field (struct parsedb_state *ps, const char **value, const char *what)

Variables
freadfunction	f_name
freadfunction	f_charfield
freadfunction	f_priority
freadfunction	f_obs_class
freadfunction	f_section
freadfunction	f_status
freadfunction	f_boolean
freadfunction	f_dependency
freadfunction	f_conffiles
freadfunction	f_version
freadfunction	f_obs_revision
freadfunction	f_obs_dependency
freadfunction	f_configversion
freadfunction	f_multiarch
freadfunction	f_architecture
freadfunction	f_trigpend
freadfunction	f_trigaw
freadfunction	f_archives
enum DPKG_ATTR_ENUM_FLAGS	fwriteflags
fwritefunction	w_name
fwritefunction	w_charfield
fwritefunction	w_priority
fwritefunction	w_section
fwritefunction	w_status
fwritefunction	w_configversion
fwritefunction	w_version
fwritefunction	w_null
fwritefunction	w_booleandefno
fwritefunction	w_dependency
fwritefunction	w_conffiles
fwritefunction	w_multiarch
fwritefunction	w_architecture
fwritefunction	w_trigpend
fwritefunction	w_trigaw
fwritefunction	w_archives
const struct fieldinfo	fieldinfos []
	Fields information.

Detailed Description

Macro Definition Documentation

ARCHIVEFOFF

#define ARCHIVEFOFF

(

f

)

(offsetof(struct archivedetails, f))

FIELD

#define FIELD

(

name

)

name, sizeof(name) - 1

MSDOS_EOF_CHAR

#define MSDOS_EOF_CHAR   '\032' /* ^Z */

parse_at_eof

#define parse_at_eof

(

ps

)

((ps)->dataptr >= (ps)->endptr)

parse_getc

#define parse_getc

(

ps

)

*(ps)->dataptr++

parse_ungetc

#define parse_ungetc	(		c,
			ps
	)		(ps)->dataptr--

PKGIFPOFF

#define PKGIFPOFF

(

f

)

(offsetof(struct pkgbin, f))

STRUCTFIELD

#define STRUCTFIELD	(		klass,
			off,
			type
	)		(*(type *)((uintptr_t)(klass) + (off)))

Typedef Documentation

freadfunction

typedef void freadfunction(struct pkginfo *pkg, struct pkgbin *pkgbin, struct parsedb_state *ps, const char *value, const struct fieldinfo *fip)

fwritefunction

typedef void fwritefunction(struct varbuf *, const struct pkginfo *, const struct pkgbin *, enum fwriteflags flags, const struct fieldinfo *)

parse_field_func

typedef void parse_field_func(struct parsedb_state *ps, struct field_state *fs, void *parse_obj)

Enumeration Type Documentation

parsedbtype

enum parsedbtype

Parse action.

Enumerator
pdb_file_update
pdb_file_status
pdb_file_control
pdb_file_available

Function Documentation

parse_db_version()

int parse_db_version	(	struct parsedb_state *	ps,
		struct dpkg_version *	version,
		const char *	value
	)

Parse a version string coming from a database file.

It parses a version string, and prints a warning or an error depending on the parse options.

Parameters

ps	The parsedb state.
version	The version to parse into.
value	The version string to parse from.

Return values

0	On success, and err is reset.
-1	On failure, and err is set accordingly.

References dpkg_error_destroy(), DPKG_MSG_ERROR, parsedb_state::err, parsedb_state::flags, parseversion(), pdb_lax_version_parser, and dpkg_error::type.

Referenced by f_configversion(), f_dependency(), and f_version().

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parse_ensure_have_field()

void parse_ensure_have_field	(	struct parsedb_state *	ps,
		const char **	value,
		const char *	what
	)

References _, and parse_warn().

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parse_error()

void parse_error	(	struct parsedb_state *	ps,
		const char *	fmt,
			...
	)

References args, and ohshit().

Referenced by f_archives(), f_boolean(), f_conffiles(), f_configversion(), f_dependency(), f_multiarch(), f_name(), f_priority(), f_status(), f_trigaw(), f_trigpend(), parse_must_have_field(), parse_stanza(), and parsedb_parse().

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parse_lax_problem()

void parse_lax_problem	(	struct parsedb_state *	ps,
		enum parsedbflags	flags_lax,
		const char *	fmt,
			...
	)

References args, parsedb_state::flags, ohshit(), and warning().

Referenced by f_dependency(), and parse_stanza().

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parse_must_have_field()

void parse_must_have_field	(	struct parsedb_state *	ps,
		const char *	value,
		const char *	what
	)

References _, and parse_error().

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parse_problem()

void parse_problem	(	struct parsedb_state *	ps,
		const char *	fmt,
			...
	)

References args, DPKG_MSG_WARN, parsedb_state::err, ohshit(), dpkg_error::str, dpkg_error::type, and warning().

Referenced by f_configversion(), f_dependency(), and f_version().

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parse_stanza()

bool parse_stanza	(	struct parsedb_state *	ps,
		struct field_state *	fs,
		parse_field_func *	parse_field,
		void *	parse_obj
	)

Parse an RFC-822 style stanza.

References _, MSDOS_EOF_CHAR, parse_at_eof, parse_error(), parse_getc, parse_lax_problem(), parse_ungetc, pdb_lax_stanza_parser, and dpkg_error::type.

Referenced by parsedb_parse().

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parse_warn()

void parse_warn	(	struct parsedb_state *	ps,
		const char *	fmt,
			...
	)

References args, and warning().

Referenced by f_architecture(), f_dependency(), f_obs_class(), f_obs_dependency(), f_obs_revision(), and parse_ensure_have_field().

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parsedb_close()

void parsedb_close

(

struct parsedb_state *

ps

)

Teardown a package deb822 parser context.

References _, dpkg_error_destroy(), ehflag_normaltidy, ohshite(), pdb_close_fd, pop_cleanup(), dpkg_error::type, and varbuf_destroy().

Referenced by parsedb().

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parsedb_load()

void parsedb_load

(

struct parsedb_state *

ps

)

Load data for package deb822 style parsing.

References _, varbuf::buf, parsedb_state::fd, fd_read(), fd_vbuf_copy, parsedb_state::filename, parsedb_state::flags, m_malloc(), ohshit(), ohshite(), pdb_allow_empty, dpkg_error::str, dpkg_error::type, varbuf_detach(), and VARBUF_INIT.

Referenced by parsedb().

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parsedb_new()

struct parsedb_state * parsedb_new	(	const char *	filename,
		int	fd,
		enum parsedbflags	flags
	)

Create a new deb822 parser context.

References DPKG_ERROR_OBJECT, parsedb_state::fd, parsedb_state::filename, parsedb_state::flags, m_malloc(), parsedb_state::type, and VARBUF_OBJECT.

Referenced by parsedb_open().

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parsedb_open()

struct parsedb_state * parsedb_open	(	const char *	filename,
		enum parsedbflags	flags
	)

Open a file for deb822 parsing.

References _, cu_closefd(), ehflag_normaltidy, parsedb_state::fd, parsedb_state::filename, parsedb_state::flags, ohshite(), parsedb_new(), pdb_allow_empty, pdb_close_fd, pdb_dash_is_stdin, push_cleanup(), and parsedb_state::type.

Referenced by parsedb().

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parsedb_parse()

int parsedb_parse	(	struct parsedb_state *	ps,
		struct pkginfo **	donep
	)

Parse deb822 style package data from a buffer.

donep may be NULL. If donep is not NULL only one package's information is expected.

References _, array_count, pkginfo::available, parsedb_state::data, dpkg_version_compare(), dpkg_version_is_informative(), field_state::fieldencountered, fieldinfos, parsedb_state::filename, parsedb_state::flags, pkginfo::installed, ohshit(), parse_at_eof, parse_error(), parse_stanza(), pdb_allow_empty, pdb_file_available, pdb_ignoreolder, pdb_recordavailable, pkgset::pkg, pkg_parse_object::pkg, parsedb_state::pkg, pkg_parse_object::pkgbin, parsedb_state::pkgbin, pkgset_blank(), parsedb_state::type, field_state::value, varbuf_destroy(), and pkgbin::version.

Referenced by parsedb().

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varbuf_add_arbfield()

void varbuf_add_arbfield	(	struct varbuf *	vb,
		const struct arbitraryfield *	arbfield,
		enum fwriteflags	flags
	)

References fw_printheader, arbitraryfield::name, arbitraryfield::value, varbuf_add_char(), and varbuf_add_str.

Referenced by varbuf_stanza().

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Variable Documentation

f_architecture

freadfunction f_architecture

f_archives

freadfunction f_archives

f_boolean

freadfunction f_boolean

f_charfield

freadfunction f_charfield

f_conffiles

freadfunction f_conffiles

f_configversion

freadfunction f_configversion

f_dependency

freadfunction f_dependency

Referenced by f_obs_dependency().

f_multiarch

freadfunction f_multiarch

f_name

freadfunction f_name

f_obs_class

freadfunction f_obs_class

f_obs_dependency

freadfunction f_obs_dependency

f_obs_revision

freadfunction f_obs_revision

f_priority

freadfunction f_priority

Referenced by f_obs_class().

f_section

freadfunction f_section

f_status

freadfunction f_status

f_trigaw

freadfunction f_trigaw

f_trigpend

freadfunction f_trigpend

f_version

freadfunction f_version

fieldinfos

const struct fieldinfo fieldinfos[]

extern

Fields information.

Referenced by parsedb_parse(), pkg_format_print(), and varbuf_stanza().

fwriteflags

enum DPKG_ATTR_ENUM_FLAGS fwriteflags

w_architecture

fwritefunction w_architecture

w_archives

fwritefunction w_archives

w_booleandefno

fwritefunction w_booleandefno

w_charfield

fwritefunction w_charfield

w_conffiles

fwritefunction w_conffiles

w_configversion

fwritefunction w_configversion

w_dependency

fwritefunction w_dependency

w_multiarch

fwritefunction w_multiarch

w_name

fwritefunction w_name

w_null

fwritefunction w_null

w_priority

fwritefunction w_priority

w_section

fwritefunction w_section

w_status

fwritefunction w_status

w_trigaw

fwritefunction w_trigaw

w_trigpend

fwritefunction w_trigpend

w_version

fwritefunction w_version