String buffer

String buffer — Append-only strings.

Synopsis

typedef             raptor_stringbuffer;
raptor_stringbuffer * raptor_new_stringbuffer           (void);
void                raptor_free_stringbuffer            (raptor_stringbuffer *stringbuffer);
int                 raptor_stringbuffer_append_counted_string
                                                        (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         size_t length,
                                                         int do_copy);
int                 raptor_stringbuffer_append_decimal  (raptor_stringbuffer *stringbuffer,
                                                         int integer);
int                 raptor_stringbuffer_append_hexadecimal
                                                        (raptor_stringbuffer *stringbuffer,
                                                         int hex);
int                 raptor_stringbuffer_append_string   (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         int do_copy);
int                 raptor_stringbuffer_append_stringbuffer
                                                        (raptor_stringbuffer *stringbuffer,
                                                         raptor_stringbuffer *append);
int                 raptor_stringbuffer_append_uri_escaped_counted_string
                                                        (raptor_stringbuffer *sb,
                                                         const char *string,
                                                         size_t length,
                                                         int space_is_plus);
int                 raptor_stringbuffer_prepend_counted_string
                                                        (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         size_t length,
                                                         int do_copy);
int                 raptor_stringbuffer_prepend_string  (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         int do_copy);
unsigned char *     raptor_stringbuffer_as_string       (raptor_stringbuffer *stringbuffer);
size_t              raptor_stringbuffer_length          (raptor_stringbuffer *stringbuffer);
int                 raptor_stringbuffer_copy_to_string  (raptor_stringbuffer *stringbuffer,
                                                         unsigned char *string,
                                                         size_t length);
int                 raptor_stringbuffer_write           (raptor_stringbuffer *sb,
                                                         raptor_iostream *iostr);

Description

A utility class that allows easy construction of strings that grow at the end by appending new strings. Primarily used for constructing/serializing syntaxes into strings by the raptor_iostream and raptor_serializer classes.

Details

raptor_stringbuffer

raptor_stringbuffer* raptor_stringbuffer;

Raptor string buffer class


raptor_new_stringbuffer ()

raptor_stringbuffer * raptor_new_stringbuffer           (void);

Create a new stringbuffer.

Returns :

pointer to a raptor_stringbuffer object or NULL on failure

raptor_free_stringbuffer ()

void                raptor_free_stringbuffer            (raptor_stringbuffer *stringbuffer);

Destroy a stringbuffer.

stringbuffer :

stringbuffer object to destroy.

raptor_stringbuffer_append_counted_string ()

int                 raptor_stringbuffer_append_counted_string
                                                        (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         size_t length,
                                                         int do_copy);

Add a counted string to the stringbuffer.

If string is NULL or length is 0, no work is performed.

If do_copy is non-0, the passed-in string is copied into new memory otherwise the stringbuffer becomes the owner of the string pointer and will free it when the stringbuffer is destroyed.

stringbuffer :

raptor stringbuffer

string :

string

length :

length of string

do_copy :

non-0 to copy the string

Returns :

non-0 on failure

raptor_stringbuffer_append_decimal ()

int                 raptor_stringbuffer_append_decimal  (raptor_stringbuffer *stringbuffer,
                                                         int integer);

Add an integer in decimal to the stringbuffer.

stringbuffer :

raptor stringbuffer

integer :

integer to format as decimal and add

Returns :

non-0 on failure

raptor_stringbuffer_append_hexadecimal ()

int                 raptor_stringbuffer_append_hexadecimal
                                                        (raptor_stringbuffer *stringbuffer,
                                                         int hex);

Add an integer formatted in hexdecimal (base 16) to the stringbuffer.

stringbuffer :

raptor stringbuffer

hex :

integer to format

Returns :

non-0 on failure

raptor_stringbuffer_append_string ()

int                 raptor_stringbuffer_append_string   (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         int do_copy);

Add a string to the stringbuffer.

If string is NULL, no work is performed.

If do_copy is non-0, the passed-in string is copied into new memory otherwise the stringbuffer becomes the owner of the string pointer and will free it when the stringbuffer is destroyed.

stringbuffer :

raptor stringbuffer

string :

string

do_copy :

non-0 to copy the string

Returns :

non-0 on failure

raptor_stringbuffer_append_stringbuffer ()

int                 raptor_stringbuffer_append_stringbuffer
                                                        (raptor_stringbuffer *stringbuffer,
                                                         raptor_stringbuffer *append);

Add a stringbuffer to the stringbuffer.

This function removes the content from the appending stringbuffer, making it empty and appends it to the supplied stringbuffer.

stringbuffer :

raptor_stringbuffer

append :

raptor_stringbuffer to append

Returns :

non-0 on failure

raptor_stringbuffer_append_uri_escaped_counted_string ()

int                 raptor_stringbuffer_append_uri_escaped_counted_string
                                                        (raptor_stringbuffer *sb,
                                                         const char *string,
                                                         size_t length,
                                                         int space_is_plus);

Add a URI-escaped version of string to the stringbuffer.

If string is NULL or length is 0, no work is performed.

sb :

raptor stringbuffer

string :

string

length :

length of string

space_is_plus :

if non-0, escape spaces as '+' otherwise percent-encode them

Returns :

non-0 on failure

raptor_stringbuffer_prepend_counted_string ()

int                 raptor_stringbuffer_prepend_counted_string
                                                        (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         size_t length,
                                                         int do_copy);

If do_copy is non-0, the passed-in string is copied into new memory otherwise the stringbuffer becomes the owner of the string pointer and will free it when the stringbuffer is destroyed.

Add a string to the start of the stringbuffer.

stringbuffer :

raptor stringbuffer

string :

string

length :

length of string

do_copy :

non-0 to copy the string

Returns :

non-0 on failure

raptor_stringbuffer_prepend_string ()

int                 raptor_stringbuffer_prepend_string  (raptor_stringbuffer *stringbuffer,
                                                         const unsigned char *string,
                                                         int do_copy);

Add a string to the start of the stringbuffer.

If do_copy is non-0, the passed-in string is copied into new memory otherwise the stringbuffer becomes the owner of the string pointer and will free it when the stringbuffer is destroyed.

stringbuffer :

raptor stringbuffer

string :

string

do_copy :

non-0 to copy the string

Returns :

non-0 on failure

raptor_stringbuffer_as_string ()

unsigned char *     raptor_stringbuffer_as_string       (raptor_stringbuffer *stringbuffer);

Return the stringbuffer as a C string.

Note: the return value is a to a shared string that the stringbuffer allocates and manages.

stringbuffer :

raptor stringbuffer

Returns :

NULL on failure or stringbuffer is empty, otherwise a pointer to a shared copy of the string.

raptor_stringbuffer_length ()

size_t              raptor_stringbuffer_length          (raptor_stringbuffer *stringbuffer);

Return the stringbuffer length.

stringbuffer :

raptor stringbuffer

Returns :

size of stringbuffer

raptor_stringbuffer_copy_to_string ()

int                 raptor_stringbuffer_copy_to_string  (raptor_stringbuffer *stringbuffer,
                                                         unsigned char *string,
                                                         size_t length);

Copy the stringbuffer into a string.

Copies the underlying string to a pre-allocated buffer. The output string is always '\0' terminated.

stringbuffer :

raptor stringbuffer

string :

output string

length :

size of output string

Returns :

non-0 on failure such as stringbuffer is empty, buffer is too small

raptor_stringbuffer_write ()

int                 raptor_stringbuffer_write           (raptor_stringbuffer *sb,
                                                         raptor_iostream *iostr);

Write a stringbuffer to an iostream.

sb :

raptor_stringbuffer to write

iostr :

raptor iostream

Returns :

non-0 on failure


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