Data Structures
struct	argopt_t

Macros
#define	strdup mystrdup /our strdup handles NULL correctly, and talk to mem.c /

#define	strndup mystrndup

Functions
char *	mydirname (const char *fn)

int	check_suffix (const char fn, const char suffix)

int	copyfile (const char src, const char dest)

char *	argv2str (int argc, const char argv[], const char delim)

void	print_file (const char *fnin)

time_t	myclocki (void)

double	myclockd (void)

const char *	myasctime (time_t at)

char *	strtime_pid (void)

const char *	myhostname (void)

char *	mygetcwd (void)

char *	myabspath (const char *path)

int	mysymlink (const char source, const char dest)

int	mylink (const char source, const char dest)

int	exist (const char *fn)

int	isdir (const char *fn)

int	isfile (const char *fn)

int	islink (const char *fn)

int	issock (int fd)

size_t	flen (const char *fn)

time_t	fmtime (const char *fn)

char *	stradd (const char *a,...)

char *	strnadd (int argc, const char argv[], const char delim)

char *	expand_filename (const char *fn)

void	remove_file_older (const char *fndir, int level, long sec)

void	mymkdir (const char *format,...)

int	mystrcmp (const char a, const char b)

char *	mystrndup (const char *A, size_t len)

void	cloexec (int fd)

void	mysleep (double sec)

int	mypause (int fd1, int fd2)

long	available_space (const char *path)

char *	mystrdup (const char *A)

void	parse_argopt (char cmds, argopt_t options)

void	set_realtime (int icpu, int niceness)

void	free_strarr (char **str, int n)

Detailed Description

misc routines.

Data Structure Documentation

◆ argopt_t

struct argopt_t

Collaboration diagram for argopt_t:

Data Fields
const char *	name	The long name
char	key	The short name
int	type	The type of result expected
int	valtype	The type of input expected: 0: The key does not need value; 1: The key needs value; 2: The key accepts an array of values.
int	isfun	Whether val indicate a function pointer 0: The address to put the return results. 1: A function pointer to call.
void *	val	The address to put the return result.
int *	nval	If val is array, this is the counter.

Function Documentation

◆ mydirname()

char* mydirname ( const char * fn )

Obtain the dirname of a path. See mybasename().

◆ check_suffix()

int check_suffix	(	const char *	fn,
		const char *	suffix
	)

Check the suffix of a file.

◆ copyfile()

int copyfile	(	const char *	src,
		const char *	dest
	)

Copy a file from src to dest

◆ argv2str()

char* argv2str	(	int	argc,
		const char *	argv[],
		const char *	delim
	)

Convert argc, argv to a single string, prefixed by the current directory.

◆ print_file()

void print_file ( const char * fnin )

Print the content of a file.

◆ myclocki()

time_t myclocki ( void )

Get current time in seconds as an integer.

◆ myclockd()

double myclockd ( void )

Get current time in nano-second resolution.

◆ myasctime()

const char* myasctime ( time_t at )

Get current time in ascii string for easy print. The string contains spaces and is not suitable to use in filename. The returned string should not be modified.

◆ strtime_pid()

char* strtime_pid ( void )

Get furrent time in ascii string that doesn't contain spaces. Suitable for use in filenames. The returnned string must be freed.

◆ mygetcwd()

char* mygetcwd ( void )

Get current directory. The returnned string must be freed.

◆ myabspath()

char* myabspath ( const char * path )

Translate a path into absolute path. The caller shall free the returned string.

◆ mysymlink()

int mysymlink	(	const char *	source,
		const char *	dest
	)

Create symbolic link

◆ mylink()

int mylink	(	const char *	source,
		const char *	dest
	)

Create hard link

◆ exist()

int exist ( const char * fn )

Test whether a file exists.

◆ isdir()

int isdir ( const char * fn )

Test whether fn is directory

◆ isfile()

int isfile ( const char * fn )

Test whether fn is ordinary file

◆ islink()

int islink ( const char * fn )

Test whether fn is a symbolic link

◆ issock()

int issock ( int fd )

Test whether fd is a socket

◆ flen()

size_t flen ( const char * fn )

Compute length of file in Bytes

◆ fmtime()

time_t fmtime ( const char * fn )

Return the modification time of the file

◆ stradd()

char* stradd	(	const char *	a,
			...
	)

Concatenate many strings. Argument list must end with NULL.

◆ strnadd()

char* strnadd	(	int	argc,
		const char *	argv[],
		const char *	delim
	)

Concatenate many strings, like stradd, but arguments are an array of char*

◆ expand_filename()

char* expand_filename ( const char * fn )

translate a filename into absolute file name that starts with /

◆ remove_file_older()

void remove_file_older	(	const char *	fndir,
		int	level,
		long	sec
	)

Remove files that are older than sec seconds in folder fndir. If sec==0, remove everything.

◆ mymkdir()

void mymkdir	(	const char *	format,
			...
	)

Make dirs recursively. like mkdir -p in bash

◆ mystrcmp()

int mystrcmp	(	const char *	a,
		const char *	b
	)

Compare two strings upto the length of b. if length of a is less than b, return false. 1 means not equal.

◆ mystrndup()

char* mystrndup	(	const char *	A,
		size_t	len
	)

Duplicate a string. Check for NULL. Do not call strndup to avoid recursive deadlock.

◆ cloexec()

void cloexec ( int fd )

Make the fd close on exec.

◆ mysleep()

void mysleep ( double sec )

wrap of nanosleep

◆ mypause()

int mypause	(	int	fd1,
		int	fd2
	)

Pause execution and listen input from fd1 and/or fd2 for continuation. Returns new pause flag.

Parameters

fd1	first file no, usually 0 for stdin
fd2	second file no, usually created from a pipe t

◆ available_space()

long available_space ( const char * path )

Return available space of mounted file system in bytes.

◆ mystrdup()

char* mystrdup ( const char * A )

declare strdup so my memory mangement mem.c is happy when DEBUG=1. Handles NULL pointer correctly. Do not call strdup to avoid recursive deadlock.

◆ parse_argopt()

void parse_argopt	(	char *	cmds,
		argopt_t *	options
	)

Parse command line arguments. The remaining string contains whatever is not yet parsed. This is more relaxed than the built in getopd

◆ set_realtime()

void set_realtime	(	int	icpu,
		int	niceness
	)

Set scheduling priorities for the process to enable real time behavior.

Data Structures

Macros

Functions