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MQTT C Client Libraries Internals
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Functions for checking that strings contain UTF-8 characters only. More...
#include "utf-8.h"#include <stdlib.h>#include <string.h>#include "StackTrace.h"
Macros | |
| #define | ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) |
| Macro to determine the number of elements in a single-dimension array. | |
Functions | |
| static const char * | UTF8_char_validate (int len, const char *data) |
| Validate a single UTF-8 character. More... | |
| int | UTF8_validate (int len, const char *data) |
| Validate a length-delimited string has only UTF-8 characters. More... | |
| int | UTF8_validateString (const char *string) |
| Validate a null-terminated string has only UTF-8 characters. More... | |
Variables | |
| struct { | |
| int len | |
| number of elements in the following array (1 to 4) | |
| struct { | |
| char lower | |
| lower limit of valid range | |
| char upper | |
| upper limit of valid range | |
| } bytes [4] | |
| up to 4 bytes can be used per character | |
| } | valid_ranges [] |
| Structure to hold the valid ranges of UTF-8 characters, for each byte up to 4. More... | |
Functions for checking that strings contain UTF-8 characters only.
See page 104 of the Unicode Standard 5.0 for the list of well formed UTF-8 byte sequences.
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static |
Validate a single UTF-8 character.
| len | the length of the string in "data" |
| data | the bytes to check for a valid UTF-8 char |
| int UTF8_validate | ( | int | len, |
| const char * | data | ||
| ) |
Validate a length-delimited string has only UTF-8 characters.
| len | the length of the string in "data" |
| data | the bytes to check for valid UTF-8 characters |

| int UTF8_validateString | ( | const char * | string | ) |
Validate a null-terminated string has only UTF-8 characters.
| string | the string to check for valid UTF-8 characters |

| struct { ... } valid_ranges[] |
Structure to hold the valid ranges of UTF-8 characters, for each byte up to 4.
1.8.17