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- change QR::ErrorCorrection class enum to C-compatible enum - define wrapper functions for QR::encode
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| #include <qrgen.h> | ||
| #include <cstdio> | ||
| #include <codecvt> | ||
| #include <locale> | ||
| #include <string> | ||
| #include "qr.h" | ||
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| using namespace std; | ||
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| static QRGen_Symbol *convertSymbol(const Symbol &symbol); | ||
| static u16string fromUtf8(const char *data, size_t len); | ||
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| extern "C" { | ||
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| QRGen_Symbol *QRGen_encode(const char *data, size_t len) { | ||
| Symbol symbol = QR::encode(fromUtf8(data, len)); | ||
| return convertSymbol(symbol); | ||
| } | ||
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| struct QRGen_Symbol *QRGen_encode_ec(const char *data, size_t len, QRGen_ErrorCorrection ec) { | ||
| Symbol symbol = QR::encode(fromUtf8(data, len), ec); | ||
| return convertSymbol(symbol); | ||
| } | ||
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| void QRGen_free_symbol(QRGen_Symbol *symbol) { | ||
| if (symbol) { | ||
| if (symbol->data) { | ||
| free(symbol->data); | ||
| symbol->data = nullptr; | ||
| } | ||
| free(symbol); | ||
| } | ||
| } | ||
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| } // extern "C" | ||
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| static QRGen_Symbol *convertSymbol(const Symbol &symbol) { | ||
| const int size = symbol.size(); | ||
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| if (size == 0) { | ||
| return nullptr; | ||
| } | ||
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| QRGen_Symbol *result = reinterpret_cast<QRGen_Symbol*>(malloc(sizeof(QRGen_Symbol))); | ||
| if (result == nullptr) { | ||
| perror("malloc"); | ||
| return nullptr; | ||
| } | ||
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| result->width = size; | ||
| result->height = size; | ||
| result->data = reinterpret_cast<bool*>(malloc(sizeof(bool) * size * size)); | ||
| if (result->data == nullptr) { | ||
| perror("malloc"); | ||
| free(result); | ||
| return nullptr; | ||
| } | ||
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| // Cannot use memcpy because symbol.pixels() is packed, but result->data is not. | ||
| for(size_t i = 0; i < symbol.pixels().size(); ++i) { | ||
| result->data[i] = symbol.pixels()[i]; | ||
| } | ||
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| return result; | ||
| } | ||
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| static u16string fromUtf8(const char *data, size_t len) { | ||
| using CVT = codecvt_utf8_utf16<char16_t>; | ||
| return wstring_convert<CVT, char16_t>{}.from_bytes(&data[0], &data[len]); | ||
| } |
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