state_files.c File Reference

State file implementation. More...

#include "compile_time.h"
#include "src/lib/state_files.h"
#include "src/lib/convert.h"
#include "src/lib/filehandler.h"
#include "src/lib/log.h"
#include "src/lib/sds_extras.h"
#include "src/lib/utility.h"
#include "src/lib/validate.h"
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <inttypes.h>
#include <string.h>

Include dependency graph for state_files.c:

Functions
bool	check_partition_state_dir (sds workdir, sds partition)
sds	camel_to_snake (sds text)
sds	state_file_rw_string_sds (sds workdir, const char *dir, const char *name, sds def_value, validate_callback vcb, bool write)
sds	state_file_rw_string (sds workdir, const char *dir, const char *name, const char *def_value, validate_callback vcb, bool write)
bool	state_file_rw_bool (sds workdir, const char *dir, const char *name, bool def_value, bool write)
enum mpd_tag_type	state_file_rw_tag (sds workdir, const char *dir, const char *name, enum mpd_tag_type def_value, bool write)
int	state_file_rw_int (sds workdir, const char *dir, const char *name, int def_value, int min, int max, bool write)
unsigned	state_file_rw_uint (sds workdir, const char *dir, const char *name, unsigned def_value, unsigned min, unsigned max, bool write)
bool	state_file_write (sds workdir, const char *subdir, const char *filename, const char *value)

Detailed Description

State file implementation.

Function Documentation

camel_to_snake()

sds camel_to_snake

(

sds

text

)

Converts camel case to snake notation

Parameters

text	string to convert

Returns

newly allocated sds string in snake notation

check_partition_state_dir()

bool check_partition_state_dir	(	sds	workdir,
		sds	partition
	)

Checks if the state dir for a partition exists

Parameters

workdir	myMPD working directory
partition	partition name

Returns

true on success, else false

state_file_rw_bool()

bool state_file_rw_bool	(	sds	workdir,
		const char *	dir,
		const char *	name,
		bool	def_value,
		bool	write
	)

Reads a bool from a file or writes the file with a default value if not exists or value is invalid

Parameters

workdir	mympd working directory
dir	subdir
name	filename to read/write
def_value	default value
write	if true create the file if not exists

Returns

newly allocated sds string

state_file_rw_int()

int state_file_rw_int	(	sds	workdir,
		const char *	dir,
		const char *	name,
		int	def_value,
		int	min,
		int	max,
		bool	write
	)

Reads an int value from a file or writes the file with a default value if not exists or value is invalid

Parameters

workdir	mympd working directory
dir	subdir
name	filename to read/write
def_value	default value as sds string (is freed by this function)
min	minimum value
max	maximum value
write	if true create the file if not exists

Returns

newly allocated sds string

state_file_rw_string()

sds state_file_rw_string	(	sds	workdir,
		const char *	dir,
		const char *	name,
		const char *	def_value,
		validate_callback	vcb,
		bool	write
	)

Reads a string from a file or writes the file with a default value if not exists or value is invalid

Parameters

workdir	mympd working directory
dir	subdir
name	filename to read/write
def_value	default value as c string
vcb	validation callback from validate.h
write	if true create the file if not exists

Returns

newly allocated sds string

state_file_rw_string_sds()

sds state_file_rw_string_sds	(	sds	workdir,
		const char *	dir,
		const char *	name,
		sds	def_value,
		validate_callback	vcb,
		bool	write
	)

Reads a string from a file or writes the file with a default value if not exists or value is invalid Frees the default value.

Parameters

workdir	mympd working directory
dir	subdir
name	filename to read/write
def_value	default value as sds string (is freed by this function)
vcb	validation callback from validate.h
write	if true create the file if not exists

Returns

newly allocated sds string

state_file_rw_tag()

enum mpd_tag_type state_file_rw_tag	(	sds	workdir,
		const char *	dir,
		const char *	name,
		enum mpd_tag_type	def_value,
		bool	write
	)

Reads a tag name from a file, parses it to a mpd_tag_type or writes the file with a default value if not exists or value is invalid

Parameters

workdir	mympd working directory
dir	subdir
name	filename to read/write
def_value	default value as mpd_tag_type
write	if true create the file if not exists

Returns

parsed string as mpd_tag_type

state_file_rw_uint()

unsigned state_file_rw_uint	(	sds	workdir,
		const char *	dir,
		const char *	name,
		unsigned	def_value,
		unsigned	min,
		unsigned	max,
		bool	write
	)

Reads an unsigned value from a file or writes the file with a default value if not exists or value is invalid

Parameters

workdir	mympd working directory
dir	subdir
name	filename to read/write
def_value	default value as sds string (is freed by this function)
min	minimum value
max	maximum value
write	if true create the file if not exists

Returns

newly allocated sds string

state_file_write()

bool state_file_write	(	sds	workdir,
		const char *	subdir,
		const char *	filename,
		const char *	value
	)

Writes the statefile

Parameters

workdir	mympd working directory
subdir	subdir
filename	filename to write
value	value to write fo file

Returns

true on success else false