10 size_t offset,
int value);
27 size_t offset,
int value)
30 parser->problem = problem;
31 parser->problem_offset = offset;
32 parser->problem_value =
value;
41 #define BOM_UTF8 "\xef\xbb\xbf"
42 #define BOM_UTF16LE "\xff\xfe"
43 #define BOM_UTF16BE "\xfe\xff"
106 if (parser->
eof)
return 1;
146 assert(parser->read_handler);
150 if (parser->eof && parser->raw_buffer.pointer == parser->raw_buffer.last)
155 if (parser->unread >= length)
160 if (!parser->encoding) {
167 if (parser->buffer.start < parser->buffer.pointer
168 && parser->buffer.pointer < parser->buffer.last) {
169 size_t size = parser->buffer.last - parser->buffer.pointer;
170 memmove(parser->buffer.start, parser->buffer.pointer, size);
171 parser->buffer.pointer = parser->buffer.start;
172 parser->buffer.last = parser->buffer.start +
size;
174 else if (parser->buffer.pointer == parser->buffer.last) {
175 parser->buffer.pointer = parser->buffer.start;
176 parser->buffer.last = parser->buffer.start;
181 while (parser->unread < length)
185 if (!first || parser->raw_buffer.pointer == parser->raw_buffer.last) {
192 while (parser->raw_buffer.pointer != parser->raw_buffer.last)
194 unsigned int value = 0, value2 = 0;
197 unsigned int width = 0;
200 size_t raw_unread = parser->raw_buffer.last - parser->raw_buffer.pointer;
204 switch (parser->encoding)
230 octet = parser->raw_buffer.pointer[0];
231 width = (octet & 0x80) == 0x00 ? 1 :
232 (octet & 0xE0) == 0xC0 ? 2 :
233 (octet & 0xF0) == 0xE0 ? 3 :
234 (octet & 0xF8) == 0xF0 ? 4 : 0;
240 "invalid leading UTF-8 octet",
241 parser->offset, octet);
245 if (width > raw_unread) {
248 "incomplete UTF-8 octet sequence",
257 value = (octet & 0x80) == 0x00 ? octet & 0x7F :
258 (octet & 0xE0) == 0xC0 ? octet & 0x1F :
259 (octet & 0xF0) == 0xE0 ? octet & 0x0F :
260 (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
264 for (k = 1; k < width; k ++)
266 octet = parser->raw_buffer.pointer[k];
270 if ((octet & 0xC0) != 0x80)
272 "invalid trailing UTF-8 octet",
273 parser->offset+k, octet);
277 value = (value << 6) + (octet & 0x3F);
282 if (!((width == 1) ||
283 (width == 2 && value >= 0x80) ||
284 (width == 3 && value >= 0x800) ||
285 (width == 4 && value >= 0x10000)))
287 "invalid length of a UTF-8 sequence",
292 if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF)
294 "invalid Unicode character",
295 parser->offset, value);
333 if (raw_unread < 2) {
336 "incomplete UTF-16 character",
345 value = parser->raw_buffer.pointer[low]
346 + (parser->raw_buffer.pointer[high] << 8);
350 if ((value & 0xFC00) == 0xDC00)
352 "unexpected low surrogate area",
353 parser->offset, value);
357 if ((value & 0xFC00) == 0xD800) {
363 if (raw_unread < 4) {
366 "incomplete UTF-16 surrogate pair",
375 value2 = parser->raw_buffer.pointer[low+2]
376 + (parser->raw_buffer.pointer[high+2] << 8);
380 if ((value2 & 0xFC00) != 0xDC00)
382 "expected low surrogate area",
383 parser->offset+2, value2);
387 value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF);
402 if (incomplete)
break;
411 if (! (value == 0x09 || value == 0x0A || value == 0x0D
412 || (value >= 0x20 && value <= 0x7E)
413 || (value == 0x85) || (value >= 0xA0 && value <= 0xD7FF)
414 || (value >= 0xE000 && value <= 0xFFFD)
415 || (value >= 0x10000 && value <= 0x10FFFF)))
417 "control characters are not allowed",
418 parser->offset, value);
422 parser->raw_buffer.pointer += width;
423 parser->offset += width;
429 *(parser->buffer.last++) = value;
432 else if (value <= 0x7FF) {
433 *(parser->buffer.last++) = 0xC0 + (value >> 6);
434 *(parser->buffer.last++) = 0x80 + (value & 0x3F);
437 else if (value <= 0xFFFF) {
438 *(parser->buffer.last++) = 0xE0 + (value >> 12);
439 *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
440 *(parser->buffer.last++) = 0x80 + (value & 0x3F);
444 *(parser->buffer.last++) = 0xF0 + (value >> 18);
445 *(parser->buffer.last++) = 0x80 + ((value >> 12) & 0x3F);
446 *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
447 *(parser->buffer.last++) = 0x80 + (value & 0x3F);
456 *(parser->buffer.last++) =
'\0';
463 if (parser->offset >= PTRDIFF_MAX)
yaml_char_t * last
The last filled position of the buffer.
The UTF-16-BE encoding with BOM.
RUBY_EXTERN void * memmove(void *, const void *, size_t)
yaml_encoding_t encoding
The input encoding.
const unsigned char * end
The string end pointer.
void * read_handler_data
A pointer for passing to the read handler.
yaml_parser_update_buffer(yaml_parser_t *parser, size_t length)
const unsigned char * start
The string start pointer.
yaml_char_t * pointer
The current position of the buffer.
The UTF-16-LE encoding with BOM.
yaml_read_handler_t * read_handler
Read handler.
static int yaml_parser_determine_encoding(yaml_parser_t *parser)
Cannot read or decode the input stream.
#define YAML_DECLARE(type)
The public API declaration.
static int yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem, size_t offset, int value)
int memcmp(const void *s1, const void *s2, size_t len)
size_t offset
The offset of the current position (in bytes).
The default UTF-8 encoding.
struct parser_params * parser
#define assert(condition)
struct yaml_parser_s::@39 raw_buffer
The raw buffer.
static int yaml_parser_update_raw_buffer(yaml_parser_t *parser)