Open SCAP Library

Data Structures | Macros | Typedefs | Functions
SEXPRESSIONS
OVAL » PROBES

## Data Structures
struct | SEXP_list_it
struct | __dbginf_t

## Macros
#define | SEXP_MANIP_H
#define | SEXP_number_newi SEXP_number_newi_32
| Create a new sexp object from an integer. More...
#define | SEXP_number_geti SEXP_number_geti_32
| Get integer value from a sexp object. More...
#define | SEXP_number_newu SEXP_number_newu_32
| Create a new sexp object from an unsigned integer. More...
#define | SEXP_number_getu SEXP_number_getu_32
| Get unsigned integer value from a sexp object. More...
#define | SEXP_IT_RECURSIVE 0x01
#define | SEXP_IT_HARDREF 0x02
#define | SEXP_free(ptr) __SEXP_free (ptr, __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define | SEXP_vfree(...) __SEXP_vfree (__FILE__, __LINE__, __PRETTY_FUNCTION__, PP_NARG(__VA_ARGS__), __VA_ARGS__)
#define | SEXP_VALIDATE(s) __SEXP_VALIDATE(s, __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define | SEXP_LISTIT_ARRAY_INC 32
#define | SEXP_LISTIT_ARRAY_INIT 32

## Typedefs
typedef struct SEXP_it | SEXP_it_t
typedef struct SEXP_list_it | SEXP_list_it

## Functions
SEXP_t * | SEXP_number_new (SEXP_numtype_t t, const void *n) __attribute__((nonnull(2)))
| Create a new sexp object from a value and a number type. More...
SEXP_t * | SEXP_number_newb (bool n)
| Create a new sexp object from a boolean value. More...
SEXP_t * | SEXP_number_newi_8 (int8_t n)
| Create a new sexp object from an integer. More...
SEXP_t * | SEXP_number_newu_8 (uint8_t n)
| Create a new sexp object from an unsigned integer. More...
uint8_t | SEXP_number_getu_8 (const SEXP_t *s_exp)
| Get unsigned integer value from a sexp object. More...
SEXP_t * | SEXP_number_newi_16 (int16_t n)
| Create a new sexp object from an integer. More...
SEXP_t * | SEXP_number_newu_16 (uint16_t n)
| Create a new sexp object from an unsigned integer. More...
SEXP_t * | SEXP_number_newi_32 (int32_t n)
| Create a new sexp object from an integer. More...
int32_t | SEXP_number_geti_32 (const SEXP_t *s_exp)
| Get integer value from a sexp object. More...
bool | SEXP_number_getb (const SEXP_t *s_exp)
| Get boolean value from a sexp object. More...
SEXP_t * | SEXP_number_newu_32 (uint32_t n)
| Create a new sexp object from an unsigned integer. More...
uint32_t | SEXP_number_getu_32 (const SEXP_t *s_exp)
| Get unsigned integer value from a sexp object. More...
SEXP_t * | SEXP_number_newi_64 (int64_t n)
| Create a new sexp object from an integer. More...
int64_t | SEXP_number_geti_64 (const SEXP_t *s_exp)
| Get integer value from a sexp object. More...
SEXP_t * | SEXP_number_newu_64 (uint64_t n)
| Create a new sexp object from an unsigned integer. More...
uint64_t | SEXP_number_getu_64 (const SEXP_t *s_exp)
| Get unsigned integer value from a sexp object. More...
SEXP_t * | SEXP_number_newf (double n)
| Create a new sexp object from an floating point value. More...
double | SEXP_number_getf (const SEXP_t *s_exp)
| Get floating point value from a sexp object. More...
int | SEXP_number_get (const SEXP_t *s_exp, void *dst, SEXP_numtype_t type)
| Get a value from a sexp object according to a specified type. More...
uint16_t | SEXP_number_getu_16 (const SEXP_t *s_exp)
| Get unsigned integer value from a sexp object. More...
void | SEXP_number_free (SEXP_t *s_exp)
| Free the specified sexp object. More...
bool | SEXP_numberp (const SEXP_t *s_exp)
| Check whether the provided sexp object is a number. More...
SEXP_numtype_t | SEXP_number_type (const SEXP_t *sexp)
| Get the number type of an object. More...
SEXP_t * | SEXP_string_new (const void *string, size_t strlen) __attribute__((nonnull(1)))
| Create a new sexp object from a string. More...
SEXP_t * | SEXP_string_newf (const char *format,...) __attribute__((format(printf
| Create a new sexp object from a format string. More...
SEXP_t | nonnull (1)))
void | SEXP_string_free (SEXP_t *s_exp)
| Free the specified sexp object. More...
bool | SEXP_stringp (const SEXP_t *s_exp)
| Check whether the provided sexp object is a string. More...
size_t | SEXP_string_length (const SEXP_t *s_exp)
| Get the length of a string in a sexp object. More...
int | SEXP_strcmp (const SEXP_t *s_exp, const char *str) __attribute__((nonnull(2)))
| Compare a string in a sexp object with a C string. More...
int | SEXP_strncmp (const SEXP_t *s_exp, const char *str, size_t n) __attribute__((nonnull(2)))
| Compare a string in a sexp object with a C string. More...
int | SEXP_string_nth (const SEXP_t *s_exp, size_t n)
| Get the n-th byte of a string. More...
char * | SEXP_string_cstr (const SEXP_t *s_exp)
| Get a C string from a sexp object.
size_t | SEXP_string_cstr_r (const SEXP_t *s_exp, char *buf, size_t len) __attribute__((nonnull(2)))
| Get a C string from a sexp object. More...
char * | SEXP_string_cstrp (const SEXP_t *s_exp)
| Obsolete function.
char * | SEXP_string_subcstr (const SEXP_t *s_exp, size_t beg, size_t len)
| Get a C substring from a sexp object. More...
int | SEXP_string_cmp (const SEXP_t *str_a, const SEXP_t *str_b)
| Compare two sexp strings. More...
bool | SEXP_string_getb (const SEXP_t *s_exp)
| Try to cast the supplied sexp string to a boolean. More...
SEXP_t * | SEXP_list_new (SEXP_t *memb,...)
| Create a new sexp list, optionally initialized with the provided sexp arguments. More...
void | SEXP_list_free (SEXP_t *s_exp)
| Free the specified sexp object. More...
bool | SEXP_listp (const SEXP_t *s_exp)
| Check whether the provided sexp object is a list. More...
size_t | SEXP_list_length (const SEXP_t *s_exp)
| Get the length of the sexp list. More...
SEXP_t * | SEXP_list_first (const SEXP_t *list)
| Get the first element of a list. More...
SEXP_t * | SEXP_list_rest (const SEXP_t *list)
| Get the rest of a list. More...
SEXP_t * | SEXP_list_last (const SEXP_t *list)
| Get the last element of a list. More...
SEXP_t * | SEXP_list_nth (const SEXP_t *list, uint32_t n)
| Get the n-th element of a list. More...
SEXP_t * | SEXP_list_add (SEXP_t *list, const SEXP_t *s_exp)
| Add an element to a list. More...
SEXP_t * | SEXP_list_join (const SEXP_t *list_a, const SEXP_t *list_b)
| Create a new list containing the concatenated contents of two lists. More...
SEXP_t * | SEXP_list_push (SEXP_t *list, const SEXP_t *s_exp)
| Push an element to the head of a list. More...
SEXP_t * | SEXP_list_pop (SEXP_t *list)
| Extract the first element of a list. More...
SEXP_t * | SEXP_list_sort (SEXP_t *list, int(*compare)(const SEXP_t *, const SEXP_t *))
| Sort a list using `compare' as the comparison function.
SEXP_t * | SEXP_list_replace (SEXP_t *list, uint32_t n, const SEXP_t *s_exp)
| Replace the n-th element of a list. More...
SEXP_t * | SEXP_listref_first (SEXP_t *list)
| Get the first element of a list. More...
SEXP_t * | SEXP_listref_rest (SEXP_t *list)
| Get the rest of a list. More...
SEXP_t * | SEXP_listref_last (SEXP_t *list)
| Get the last element of a list. More...
SEXP_t * | SEXP_listref_nth (SEXP_t *list, uint32_t n)
| Get the n-th element of a list. More...
SEXP_it_t * | SEXP_listit_new (const SEXP_t *list, int flags)
SEXP_t * | SEXP_listit_next (SEXP_it_t *it)
SEXP_t * | SEXP_listit_prev (SEXP_it_t *it)
SEXP_t * | SEXP_listit_length (SEXP_it_t *it)
SEXP_t * | SEXP_listit_seek (SEXP_it_t *it, uint32_t n)
void | SEXP_listit_free (SEXP_it_t *it)
SEXP_list_it * | SEXP_list_it_new (const SEXP_t *list)
SEXP_t * | SEXP_list_it_next (SEXP_list_it *it)
void | SEXP_list_it_free (SEXP_list_it *it)
SEXP_t * | SEXP_new (void)
bool | SEXP_emptyp (SEXP_t *sexp)
SEXP_t * | SEXP_ref (const SEXP_t *s_exp)
| Create a new reference to a sexp object. More...
SEXP_t * | SEXP_unref (SEXP_t *s_exp_o)
SEXP_t * | SEXP_softref (SEXP_t *s_exp)
| Create a new soft reference to a sexp object. More...
bool | SEXP_softrefp (const SEXP_t *s_exp)
| Check whether an S-exp reference is a "soft" reference. More...
uint32_t | SEXP_refs (const SEXP_t *ref)
| Return the value of the reference counter. More...
bool | SEXP_eq (const SEXP_t *a, const SEXP_t *b)
int | SEXP_refcmp (const SEXP_t *a, const SEXP_t *b)
| Compare reference pointers.
bool | SEXP_deepcmp (const SEXP_t *a, const SEXP_t *b)
void | __SEXP_free (SEXP_t *s_exp, const char *file, uint32_t line, const char *func)
void | __SEXP_vfree (const char *file, uint32_t line, const char *func, int n, SEXP_t *s_exp,...)
const char * | SEXP_datatype (const SEXP_t *s_exp)
| Get the user data type of a sexp object. More...
int | SEXP_datatype_set (SEXP_t *s_exp, const char *name) __attribute__((nonnull(2)))
| Set the user data type of a sexp object. More...
int | SEXP_datatype_set_nth (SEXP_t *list, uint32_t n, const char *name) __attribute__((nonnull(3)))
| Set the user data type of the nth sexp object in a list. More...
SEXP_type_t | SEXP_typeof (const SEXP_t *s_exp)
| Get the type of a sexp object. More...
const char * | SEXP_strtype (const SEXP_t *s_exp)
| Get a text description of the sexp object's type. More...
SEXP_t * | SEXP_build (const char *s_str,...)
size_t | SEXP_sizeof (const SEXP_t *s_exp)
void | __SEXP_VALIDATE (const SEXP_t *s_exp, const char *file, uint32_t line, const char *func)
SEXP_ID_t | SEXP_ID_v (const SEXP_t *s)
| Compute an S-exp value identifier.
SEXP_ID_t | SEXP_ID_v2 (const SEXP_t *s)
void | SEXP_lstack_init (SEXP_lstack_t *stack)
SEXP_lstack_t * | SEXP_lstack_new (void)
void | SEXP_lstack_destroy (SEXP_lstack_t *stack)
void | SEXP_lstack_free (SEXP_lstack_t *stack)
SEXP_t * | SEXP_lstack_push (SEXP_lstack_t *stack, SEXP_t *s_exp)
SEXP_t * | SEXP_lstack_pop (SEXP_lstack_t *stack)
SEXP_t * | SEXP_lstack_top (const SEXP_lstack_t *stack)
SEXP_t * | SEXP_lstack_list (SEXP_lstack_t *stack)
size_t | SEXP_lstack_depth (SEXP_lstack_t *stack)

## Detailed Description

## Macro Definition Documentation

## ◆ SEXP_number_geti

#define SEXP_number_geti SEXP_number_geti_32

Get integer value from a sexp object.

The size of the integer may be architecture dependent.

## ◆ SEXP_number_getu

#define SEXP_number_getu SEXP_number_getu_32

Get unsigned integer value from a sexp object.

The size of the integer may be architecture dependent.

## ◆ SEXP_number_newi

#define SEXP_number_newi SEXP_number_newi_32

Create a new sexp object from an integer.

The size of the integer may be architecture dependent.

## ◆ SEXP_number_newu

#define SEXP_number_newu SEXP_number_newu_32

Create a new sexp object from an unsigned integer.

The size of the integer may be architecture dependent.

## Function Documentation

## ◆ SEXP_datatype()

const char * SEXP_datatype | ( | const SEXP_t * | s_exp | ) |

Get the user data type of a sexp object.

Parameters

  s_exp | the object to be queried

## ◆ SEXP_datatype_set()

int SEXP_datatype_set | ( | SEXP_t * | s_exp,
|  | const char * | name
| ) |  |

Set the user data type of a sexp object.

Parameters

  s_exp | the object to be modified

## ◆ SEXP_datatype_set_nth()

int SEXP_datatype_set_nth | ( | SEXP_t * | list,
|  | uint32_t | n,
|  | const char * | name
| ) |  |

Set the user data type of the nth sexp object in a list.

Parameters

  list | list containing the object to be modified
  n | the position of the object
  name | name of the user data type

## ◆ SEXP_list_add()

SEXP_t * SEXP_list_add | ( | SEXP_t * | list,
|  | const SEXP_t * | s_exp
| ) |  |

Add an element to a list.

This function increments element's reference count.

Parameters

  list | the modified sexp object
  s_exp | the element to be added

## ◆ SEXP_list_first()

SEXP_t * SEXP_list_first | ( | const SEXP_t * | list | ) |

Get the first element of a list.

This function increments element's reference count

Parameters

  list | the queried sexp object

## ◆ SEXP_list_free()

void SEXP_list_free | ( | SEXP_t * | s_exp | ) |

Free the specified sexp object.

Parameters

  s_exp | the object to be freed

## ◆ SEXP_list_join()

SEXP_t * SEXP_list_join | ( | const SEXP_t * | list_a,
|  | const SEXP_t * | list_b
| ) |  |

Create a new list containing the concatenated contents of two lists.

This function increments element's reference count.

Parameters

  list_a | the first list to be contatenated
  list_b | the list to be attached to the first one

## ◆ SEXP_list_last()

SEXP_t * SEXP_list_last | ( | const SEXP_t * | list | ) |

Get the last element of a list.

This function increments element's reference count.

Parameters

  list | the queried sexp object

## ◆ SEXP_list_length()

size_t SEXP_list_length | ( | const SEXP_t * | s_exp | ) |

Get the length of the sexp list.

Parameters

  s_sexp | the queried sexp object

## ◆ SEXP_list_new()

SEXP_t * SEXP_list_new | ( | SEXP_t * | memb,
|  |  | ...
| ) |  |

Create a new sexp list, optionally initialized with the provided sexp arguments.

The argument list needs to be terminated with NULL.

Parameters

  memb | the first sexp object to be inserted into the new list. can be NULL.
  ... | arbitrary number of elements to be inserted

## ◆ SEXP_list_nth()

SEXP_t * SEXP_list_nth | ( | const SEXP_t * | list,
|  | uint32_t | n
| ) |  |

Get the n-th element of a list.

This function increments element's reference count.

Parameters

  list | the queried sexp object
  n | the position of the element in the list

## ◆ SEXP_list_pop()

SEXP_t * SEXP_list_pop | ( | SEXP_t * | list | ) |

Extract the first element of a list.

This function increments element's reference count.

Parameters

  list | the modified sexp object

## ◆ SEXP_list_push()

SEXP_t * SEXP_list_push | ( | SEXP_t * | list,
|  | const SEXP_t * | s_exp
| ) |  |

Push an element to the head of a list.

This function increments element's reference count.

Parameters

  list | the modified sexp object
  s_exp | the element to be added

## ◆ SEXP_list_replace()

SEXP_t * SEXP_list_replace | ( | SEXP_t * | list,
|  | uint32_t | n,
|  | const SEXP_t * | s_exp
| ) |  |

Replace the n-th element of a list.

This function increments element's reference count.

Parameters

  list | the modified sexp object
  n | the index of the element to be replaced
  s_exp | the element to be added

Returns
  the replaced element

## ◆ SEXP_list_rest()

SEXP_t * SEXP_list_rest | ( | const SEXP_t * | list | ) |

Get the rest of a list.

This function increments elements' reference count.

Parameters

  list | the queried sexp object

## ◆ SEXP_listp()

bool SEXP_listp | ( | const SEXP_t * | s_exp | ) |

Check whether the provided sexp object is a list.

Parameters

  s_exp | the sexp object to be tested

## ◆ SEXP_listref_first()

SEXP_t * SEXP_listref_first | ( | SEXP_t * | list | ) |

Get the first element of a list.

This function creates a soft reference to the element.

Parameters

  list | the queried sexp object

## ◆ SEXP_listref_last()

SEXP_t * SEXP_listref_last | ( | SEXP_t * | list | ) |

Get the last element of a list.

This function creates a soft reference to the element.

Parameters

  list | the queried sexp object

## ◆ SEXP_listref_nth()

SEXP_t * SEXP_listref_nth | ( | SEXP_t * | list,
|  | uint32_t | n
| ) |  |

Get the n-th element of a list.

This function creates a soft reference to the element.

Parameters

  list | the queried sexp object
  n | the position of the element in the list

## ◆ SEXP_listref_rest()

SEXP_t * SEXP_listref_rest | ( | SEXP_t * | list | ) |

Get the rest of a list.

This function creates a soft reference to the list.

Parameters

  list | the queried sexp object

## ◆ SEXP_number_free()

void SEXP_number_free | ( | SEXP_t * | s_exp | ) |

Free the specified sexp object.

Parameters

  s_exp | the object to be freed

## ◆ SEXP_number_get()

int SEXP_number_get | ( | const SEXP_t * | s_exp,
|  | void * | dst,
|  | SEXP_numtype_t | type
| ) |  |

Get a value from a sexp object according to a specified type.

Parameters

  s_exp | the queried sexp object
  dst | buffer for the value
  type | the desired number type

## ◆ SEXP_number_getb()

bool SEXP_number_getb | ( | const SEXP_t * | s_exp | ) |

Get boolean value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_getf()

double SEXP_number_getf | ( | const SEXP_t * | s_exp | ) |

Get floating point value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_geti_32()

int32_t SEXP_number_geti_32 | ( | const SEXP_t * | s_exp | ) |

Get integer value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_geti_64()

int64_t SEXP_number_geti_64 | ( | const SEXP_t * | s_exp | ) |

Get integer value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_getu_16()

uint16_t SEXP_number_getu_16 | ( | const SEXP_t * | s_exp | ) |

Get unsigned integer value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_getu_32()

uint32_t SEXP_number_getu_32 | ( | const SEXP_t * | s_exp | ) |

Get unsigned integer value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_getu_64()

uint64_t SEXP_number_getu_64 | ( | const SEXP_t * | s_exp | ) |

Get unsigned integer value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_getu_8()

uint8_t SEXP_number_getu_8 | ( | const SEXP_t * | s_exp | ) |

Get unsigned integer value from a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_number_new()

SEXP_t * SEXP_number_new | ( | SEXP_numtype_t | t,
|  | const void * | n
| ) |  |

Create a new sexp object from a value and a number type.

Parameters

  t | the desired number type
  n | pointer to the number value

## ◆ SEXP_number_newb()

SEXP_t * SEXP_number_newb | ( | bool | n | ) |

Create a new sexp object from a boolean value.

Parameters

  n | the boolean value to store

## ◆ SEXP_number_newf()

SEXP_t * SEXP_number_newf | ( | double | n | ) |

Create a new sexp object from an floating point value.

Parameters

  n | the floating point value to store

## ◆ SEXP_number_newi_16()

SEXP_t * SEXP_number_newi_16 | ( | int16_t | n | ) |

Create a new sexp object from an integer.

Parameters

  n | the integer value to store

## ◆ SEXP_number_newi_32()

SEXP_t * SEXP_number_newi_32 | ( | int32_t | n | ) |

Create a new sexp object from an integer.

Parameters

  n | the integer value to store

## ◆ SEXP_number_newi_64()

SEXP_t * SEXP_number_newi_64 | ( | int64_t | n | ) |

Create a new sexp object from an integer.

Parameters

  n | the integer value to store

## ◆ SEXP_number_newi_8()

SEXP_t * SEXP_number_newi_8 | ( | int8_t | n | ) |

Create a new sexp object from an integer.

Parameters

  n | the integer value to store

## ◆ SEXP_number_newu_16()

SEXP_t * SEXP_number_newu_16 | ( | uint16_t | n | ) |

Create a new sexp object from an unsigned integer.

Parameters

  n | the unsigned integer value to store

## ◆ SEXP_number_newu_32()

SEXP_t * SEXP_number_newu_32 | ( | uint32_t | n | ) |

Create a new sexp object from an unsigned integer.

Parameters

  n | the integer value to store

## ◆ SEXP_number_newu_64()

SEXP_t * SEXP_number_newu_64 | ( | uint64_t | n | ) |

Create a new sexp object from an unsigned integer.

Parameters

  n | the integer value to store

## ◆ SEXP_number_newu_8()

SEXP_t * SEXP_number_newu_8 | ( | uint8_t | n | ) |

Create a new sexp object from an unsigned integer.

Parameters

  n | the unsigned integer value to store

## ◆ SEXP_number_type()

SEXP_numtype_t SEXP_number_type | ( | const SEXP_t * | sexp | ) |

Get the number type of an object.

Parameters

  sexp | the queried sexp object

## ◆ SEXP_numberp()

bool SEXP_numberp | ( | const SEXP_t * | s_exp | ) |

Check whether the provided sexp object is a number.

Parameters

  s_exp | the sexp object to be tested

## ◆ SEXP_ref()

SEXP_t * SEXP_ref | ( | const SEXP_t * | s_exp | ) |

Create a new reference to a sexp object.

Parameters

  s_exp | the object of which to increment the reference count

## ◆ SEXP_refs()

uint32_t SEXP_refs | ( | const SEXP_t * | ref | ) |

Return the value of the reference counter.

Parameters

  ref |

## ◆ SEXP_softref()

SEXP_t * SEXP_softref | ( | SEXP_t * | s_exp | ) |

Create a new soft reference to a sexp object.

Parameters

  s_exp | the object to which create the soft reference

## ◆ SEXP_softrefp()

bool SEXP_softrefp | ( | const SEXP_t * | s_exp | ) |

Check whether an S-exp reference is a "soft" reference.

Parameters

  s_exp | the S-exp reference

## ◆ SEXP_strcmp()

int SEXP_strcmp | ( | const SEXP_t * | s_exp,
|  | const char * | str
| ) |  |

Compare a string in a sexp object with a C string.

Parameters

  s_exp | the sexp object to be compared
  str | the C string to be compared

## ◆ SEXP_string_cmp()

int SEXP_string_cmp | ( | const SEXP_t * | str_a,
|  | const SEXP_t * | str_b
| ) |  |

Compare two sexp strings.

Parameters

  str_a | the first string to compare
  str_b | the second string to compare

## ◆ SEXP_string_cstr_r()

size_t SEXP_string_cstr_r | ( | const SEXP_t * | s_exp,
|  | char * | buf,
|  | size_t | len
| ) |  |

Get a C string from a sexp object.

The name is stored in the provided buffer.

Parameters

  s_exp | the queried object
  buf | the buffer to store the name in
  len | the length of the buffer

## ◆ SEXP_string_free()

void SEXP_string_free | ( | SEXP_t * | s_exp | ) |

Free the specified sexp object.

Parameters

  s_exp | the object to be freed

## ◆ SEXP_string_getb()

bool SEXP_string_getb | ( | const SEXP_t * | s_exp | ) |

Try to cast the supplied sexp string to a boolean.

Parameters

  s_ext | the string to be cast

## ◆ SEXP_string_length()

size_t SEXP_string_length | ( | const SEXP_t * | s_exp | ) |

Get the length of a string in a sexp object.

Parameters

  s_exp | the queried sexp object

## ◆ SEXP_string_new()

SEXP_t * SEXP_string_new | ( | const void * | string,
|  | size_t | strlen
| ) |  |

Create a new sexp object from a string.

Parameters

  string | the string to be stored
  strlen | the length of the string in bytes

## ◆ SEXP_string_newf()

SEXP_t * SEXP_string_newf | ( | const char * | format,
|  |  | ...
| ) |  |

Create a new sexp object from a format string.

Parameters

  format | the format of the new string
  ... | arguments for the format

## ◆ SEXP_string_nth()

int SEXP_string_nth | ( | const SEXP_t * | s_exp,
|  | size_t | n
| ) |  |

Get the n-th byte of a string.

Parameters

  s_exp | the sexp object holding the string
  n | the index of the desired character

## ◆ SEXP_string_subcstr()

char * SEXP_string_subcstr | ( | const SEXP_t * | s_exp,
|  | size_t | beg,
|  | size_t | len
| ) |  |

Get a C substring from a sexp object.

Parameters

  s_sexp | the queried sexp object
  beg | the position of the fisrt character of the substring
  len | the length of the substring

## ◆ SEXP_stringp()

bool SEXP_stringp | ( | const SEXP_t * | s_exp | ) |

Check whether the provided sexp object is a string.

Parameters

  s_exp | the sexp object to be tested

## ◆ SEXP_strncmp()

int SEXP_strncmp | ( | const SEXP_t * | s_exp,
|  | const char * | str,
|  | size_t | n
| ) |  |

Compare a string in a sexp object with a C string.

Parameters

  s_exp | the sexp object to be compared
  str | the C string to be compared
  n | compare at most n bytes

## ◆ SEXP_strtype()

const char * SEXP_strtype | ( | const SEXP_t * | s_exp | ) |

Get a text description of the sexp object's type.

Parameters

  s_exp | the object to be queried

## ◆ SEXP_typeof()

SEXP_type_t SEXP_typeof | ( | const SEXP_t * | s_exp | ) |

Get the type of a sexp object.

Parameters

  s_exp | the object to be queried