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#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <yaml/yaml.h>
#include <assert.h>
/*
* Allocate a dynamic memory block.
*/
void *
yaml_malloc(size_t size)
{
return malloc(size ? size : 1);
}
/*
* Reallocate a dynamic memory block.
*/
void *
yaml_realloc(void *ptr, size_t size)
{
return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1);
}
/*
* Free a dynamic memory block.
*/
void
yaml_free(void *ptr)
{
if (ptr) free(ptr);
}
/*
* Create a new parser object.
*/
yaml_parser_t *
yaml_parser_new(void)
{
yaml_parser_t *parser;
/* Allocate the parser structure. */
parser = yaml_malloc(sizeof(yaml_parser_t));
if (!parser) return NULL;
memset(parser, 0, sizeof(yaml_parser_t));
/* Allocate the raw buffer. */
parser->raw_buffer = yaml_malloc(YAML_RAW_BUFFER_SIZE);
if (!parser->raw_buffer) {
yaml_free(parser);
return NULL;
}
parser->raw_pointer = parser->raw_buffer;
parser->raw_unread = 0;
/* Allocate the character buffer. */
parser->buffer = yaml_malloc(YAML_BUFFER_SIZE);
if (!parser->buffer) {
yaml_free(parser->raw_buffer);
yaml_free(parser);
return NULL;
}
parser->buffer_end = parser->buffer;
parser->pointer = parser->buffer;
parser->unread = 0;
return parser;
}
/*
* Destroy a parser object.
*/
void
yaml_parser_delete(yaml_parser_t *parser)
{
assert(parser); /* Non-NULL parser object expected. */
yaml_free(parser->buffer);
yaml_free(parser->raw_buffer);
memset(parser, 0, sizeof(yaml_parser_t));
yaml_free(parser);
}
/*
* String read handler.
*/
static int
yaml_string_read_handler(void *data, unsigned char *buffer, size_t size,
size_t *size_read)
{
yaml_string_input_t *input = data;
if (input->current == input->end) {
*size_read = 0;
return 1;
}
if (size > (input->end - input->current)) {
size = input->end - input->current;
}
memcpy(buffer, input->current, size);
input->current += size;
*size_read = size;
return 1;
}
/*
* File read handler.
*/
static int
yaml_file_read_handler(void *data, unsigned char *buffer, size_t size,
size_t *size_read)
{
*size_read = fread(buffer, 1, size, (FILE *)data);
return !ferror((FILE *)data);
}
/*
* Set a string input.
*/
void
yaml_parser_set_input_string(yaml_parser_t *parser,
unsigned char *input, size_t size)
{
assert(parser); /* Non-NULL parser object expected. */
assert(!parser->read_handler); /* You can set the source only once. */
assert(input); /* Non-NULL input string expected. */
parser->string_input.start = input;
parser->string_input.current = input;
parser->string_input.end = input+size;
parser->read_handler = yaml_string_read_handler;
parser->read_handler_data = &parser->string_input;
}
/*
* Set a file input.
*/
void
yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file)
{
assert(parser); /* Non-NULL parser object expected. */
assert(!parser->read_handler); /* You can set the source only once. */
assert(file); /* Non-NULL file object expected. */
parser->read_handler = yaml_file_read_handler;
parser->read_handler_data = file;
}
/*
* Set a generic input.
*/
void
yaml_parser_set_input(yaml_parser_t *parser,
yaml_read_handler_t *handler, void *data)
{
assert(parser); /* Non-NULL parser object expected. */
assert(!parser->read_handler); /* You can set the source only once. */
assert(handler); /* Non-NULL read handler expected. */
parser->read_handler = handler;
parser->read_handler_data = data;
}
/*
* Set the source encoding.
*/
void
yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding)
{
assert(parser); /* Non-NULL parser object expected. */
assert(!parser->encoding); /* Encoding is already set or detected. */
parser->encoding = encoding;
}
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