Implementation of the sstr.h header file. More...

#include "sstr.h"
#include <assert.h>
#include <ctype.h>
#include <malloc.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

Include dependency graph for sstr.c:

Macros
#define	STR struct sstr_s

#define	SSTR(s) ((STR*)(s))

#define	STR_PTR(s)

#define	SSTR_INT32_LEN (sizeof("-2147483648") - 1)

#define	SSTR_INT64_LEN (sizeof("-9223372036854775808") - 1)

#define	SSTR_MAX_UINT32_VALUE (uint32_t)0xffffffff

#define	SSTR_MAX_INT32_VALUE (uint32_t)0x7fffffff

Functions
sstr_t	sstr_new ()
	Create an empty sstr_t. More...

void	sstr_free (sstr_t s)
	delete a sstr_t. More...

sstr_t	sstr_of (const void *data, size_t length)
	Create a sstr_t from data with length bytes. More...

sstr_t	sstr_ref (const void *data, size_t length)
	Create a sstr_t from data with length bytes. The data is not copied, but have a pointer to data. More...

sstr_t	sstr (const char *cstr)
	Create a sstr_t from C-style (NULL-terminated) string str. More...

char *	sstr_cstr (sstr_t s)
	Return C-style string representation of s. More...

int	sstr_compare (sstr_t a, sstr_t b)
	Compare a and b return 0 if equal, <0 if a < b, >0 if a > b. More...

int	sstr_compare_c (sstr_t a, const char *b)
	compare sstr_t a and c-style string b More...

void	sstr_append_zero (sstr_t s, size_t length)
	Extends the sstr_t by appending additional '\0' characters at the end of its current value. More...

void	sstr_append_of (sstr_t s, const void *data, size_t length)
	Extends the sstr_t by appending additional characters in data with length of length at the end of its current value . More...

void	sstr_append (sstr_t dst, sstr_t src)
	Extends the sstr_t by appending additional characters contained in src. More...

void	sstr_append_cstr (sstr_t dst, const char *src)
	Extends the sstr_t by appending additional characters contained in src. More...

sstr_t	sstr_dup (sstr_t s)
	Duplicate s and return. More...

sstr_t	sstr_substr (sstr_t s, size_t index, size_t len)
	Get substring of s starting at index with length bytes. More...

void	sstr_clear (sstr_t s)
	clear the sstr_t. After this call, the sstr_t is empty. More...

sstr_t	sstr_printf (const char *fmt,...)
	printf implement. More...

sstr_t	sstr_printf_append (sstr_t buf, const char *fmt,...)
	Same as sstr_printf(), but but print to buf instead of create a new one. More...

sstr_t	sstr_vslprintf (const char *fmt, va_list args)
	Printf implement. More...

sstr_t	sstr_vslprintf_append (sstr_t buf, const char *fmt, va_list args)
	Same as sstr_vslprintf, but print to buf instead of create a new one. More...

const char *	sstr_version ()
	return version string. More...

void	sstr_append_int_str (sstr_t s, int i)
	convert sstr <-> int,long,float,double

int	sstr_parse_long (sstr_t s, long *v)

int	sstr_parse_int (sstr_t s, int v)

void	sstr_append_long_str (sstr_t s, long l)

void	sstr_append_float_str (sstr_t s, float f, int precission)

void	sstr_append_double_str (sstr_t s, double f, int precision)

int	sstr_parse_double (sstr_t s, double *v)

int	sstr_json_escape_string_append (sstr_t out, sstr_t in)

void	sstr_append_of_if (sstr_t s, const void *data, size_t length, int cond)
	Append if cond is true, otherwise do nothing. More...

void	sstr_append_indent (sstr_t s, size_t indent)
	append spaces at the end of the sstr_t. More...

Detailed Description

Implementation of the sstr.h header file.

Macro Definition Documentation

◆ STR_PTR

#define STR_PTR ( s )

Value:

    ((SSTR(s))->type == SSTR_TYPE_SHORT                                   \
         ? (SSTR(s))->un.short_str                                        \
         : (SSTR(s)->type == SSTR_TYPE_LONG ? (SSTR(s)->un.long_str.data) \
                                            : (SSTR(s)->un.ref_str.data)))

Function Documentation

◆ sstr()

sstr_t sstr ( const char * cstr )

Create a sstr_t from C-style (NULL-terminated) string str.

The cstr is copied to the new sstr_t, so you can free cstr after calling this function.

Parameters

cstr	C-style string to copy to the result sstr_t.

Returns: sstr_t containing data copied from cstr.

◆ sstr_append()

void sstr_append	(	sstr_t	dst,
		sstr_t	src
	)

Extends the sstr_t by appending additional characters contained in src.

Parameters

dst	destination sstr_t.
src	source sstr_t.

◆ sstr_append_cstr()

void sstr_append_cstr	(	sstr_t	dst,
		const char *	src
	)

Extends the sstr_t by appending additional characters contained in src.

Parameters

dst	destination sstr_t.
src	source C-style string.

◆ sstr_append_indent()

void sstr_append_indent	(	sstr_t	s,
		size_t	indent
	)

append spaces at the end of the sstr_t.

Parameters

s	the sstr_t to append spaces to.
indent	numbers of spaces to append.

◆ sstr_append_of()

void sstr_append_of	(	sstr_t	s,
		const void *	data,
		size_t	length
	)

Extends the sstr_t by appending additional characters in data with length of length at the end of its current value .

Parameters

s	destination sstr_t.
data	data to append.
length	length of data.

◆ sstr_append_of_if()

void sstr_append_of_if	(	sstr_t	s,
		const void *	data,
		size_t	length,
		int	cond
	)

Append if cond is true, otherwise do nothing.

Parameters

s	the sstr_t to append to.
data	data to append.
length	length of data.
cond	condition

◆ sstr_append_zero()

void sstr_append_zero	(	sstr_t	s,
		size_t	length
	)

Extends the sstr_t by appending additional '\0' characters at the end of its current value.

Parameters

s	destination sstr_t.
length	length of '\0' to append.

◆ sstr_clear()

void sstr_clear ( sstr_t s )

clear the sstr_t. After this call, the sstr_t is empty.

Parameters

s	sstr_t instance to clear.

◆ sstr_compare()

int sstr_compare	(	sstr_t	a,
		sstr_t	b
	)

Compare a and b return 0 if equal, <0 if a < b, >0 if a > b.

Parameters

a	sstr_t to be compared.
b	sstr_t to be compared to.

Returns: int the compare result.; 0 They compare equal.; <0 Either the value of the first character that does not match is lower in the compared string, or all compared characters match but the compared string is shorter.; >0 Either the value of the first character that does not match is greater in the compared string, or all compared characters match but the compared string is longer.

Note: This function is case sensitive.

◆ sstr_compare_c()

int sstr_compare_c	(	sstr_t	a,
		const char *	b
	)

compare sstr_t a and c-style string b

just like sstr_compare, but compare a and c-style string b.

Returns: int

◆ sstr_cstr()

char* sstr_cstr ( sstr_t s )

Return C-style string representation of s.

This function return a pointer to the internal C-style string, it has a null-terminal character at the end. So you can use it as a C-style string. The returned pointer is valid until sstr_free()/sstr_append()/sstr_append_of() or any functions that may modify the contents of sstr_t is called.

Parameters

s	sstr_t instance to convert to C-style string.

Returns: char* C-style string representation of s.

Note: The returned string is reused by s, do not free it yourself.

◆ sstr_dup()

sstr_t sstr_dup ( sstr_t s )

Duplicate s and return.

Parameters

s	sstr_t to duplicate.

Returns: sstr_t duplicate of s.

◆ sstr_free()

void sstr_free ( sstr_t s )

delete a sstr_t.

Parameters

s	sstr_t instance to delete.

◆ sstr_new()

sstr_t sstr_new ( )

Create an empty sstr_t.

Returns: sstr_t

◆ sstr_of()

sstr_t sstr_of	(	const void *	data,
		size_t	length
	)

Create a sstr_t from data with length bytes.

The data is copied to the new sstr_t, so you can free data after calling this function.

Parameters

data	data to copy to the result sstr_t.
length	length of data.

Returns: sstr_t containing data copied from data.

◆ sstr_printf()

sstr_t sstr_printf	(	const char *	fmt,
			...
	)

printf implement.

Parameters

fmt	format, like C printf()
...	arguments, like C printf()

Returns: sstr_t result string.

◆ sstr_printf_append()

sstr_t sstr_printf_append	(	sstr_t	buf,
		const char *	fmt,
			...
	)

Same as sstr_printf(), but but print to buf instead of create a new one.

Parameters

buf	buffer to print to.
fmt	format string.
...	arguments.

Returns: sstr_t the result string.

◆ sstr_ref()

sstr_t sstr_ref	(	const void *	data,
		size_t	length
	)

Create a sstr_t from data with length bytes. The data is not copied, but have a pointer to data.

Parameters

data	data of the result sstr_t.
length	length of data.

Returns: sstr_t

Note: The result sstr_t does not own data, but have a pointer to data. It is a reference, not a copy.; You cannot append a sstr_ref() result.

◆ sstr_substr()

sstr_t sstr_substr	(	sstr_t	s,
		size_t	index,
		size_t	len
	)

Get substring of s starting at index with length bytes.

Parameters

s	sstr_t instance to get substring of.
index	index of the first byte of the substring.
len	number of bytes of the substring.

Returns: sstr_t substring of s. if index is out of range, return an empty string.

◆ sstr_version()

const char* sstr_version ( )

return version string.

Returns: const char* static version string.

◆ sstr_vslprintf()

sstr_t sstr_vslprintf	(	const char *	fmt,
		va_list	args
	)

Printf implement.

supported formats:

%[0][width]T time_t
%[0][width][u][x|X]z ssize_t/size_t
%[0][width][u][x|X]d int/u_int
%[0][width][u][x|X]l long
%[0][width][u][x|X]D int32_t/uint32_t
%[0][width][u][x|X]L int64_t/uint64_t
%[0][width][.width]f double, max valid number fits to %18.15f
p void *
%[x|X]S sstr_t, if x, print as hexadecimal
s null-terminated string
%*s length and string
Z '\0'
N '
'
c char
%% %

reserved:

C wchar

if u/x/X, tailing d can be ignore

◆ sstr_vslprintf_append()

sstr_t sstr_vslprintf_append	(	sstr_t	buf,
		const char *	fmt,
		va_list	args
	)

Same as sstr_vslprintf, but print to buf instead of create a new one.

Parameters

buf	result sstr_t to print to.
fmt	format string.
args	arguments.

Returns: sstr_t the result string.

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ STR_PTR

Function Documentation

◆ sstr()

◆ sstr_append()

◆ sstr_append_cstr()

◆ sstr_append_indent()

◆ sstr_append_of()

◆ sstr_append_of_if()

◆ sstr_append_zero()

◆ sstr_clear()

◆ sstr_compare()

◆ sstr_compare_c()

◆ sstr_cstr()

◆ sstr_dup()

◆ sstr_free()

◆ sstr_new()

◆ sstr_of()

◆ sstr_printf()

◆ sstr_printf_append()

◆ sstr_ref()

◆ sstr_substr()

◆ sstr_version()

◆ sstr_vslprintf()

◆ sstr_vslprintf_append()