| // Copyright Joyent, Inc. and other Node contributors. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and associated documentation files (the |
| // "Software"), to deal in the Software without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Software, and to permit |
| // persons to whom the Software is furnished to do so, subject to the |
| // following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included |
| // in all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN |
| // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
| // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| // USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| #ifndef SRC_STRING_BYTES_H_ |
| #define SRC_STRING_BYTES_H_ |
| |
| // Decodes a v8::Handle<v8::String> or Buffer to a raw char* |
| |
| #include "v8.h" |
| #include "node.h" |
| |
| namespace node { |
| |
| using v8::Handle; |
| using v8::Local; |
| using v8::String; |
| using v8::Value; |
| |
| class StringBytes { |
| public: |
| // Does the string match the encoding? Quick but non-exhaustive. |
| // Example: a HEX string must have a length that's a multiple of two. |
| // FIXME(bnoordhuis) IsMaybeValidString()? Naming things is hard... |
| static bool IsValidString(Handle<String> string, enum encoding enc); |
| |
| // Fast, but can be 2 bytes oversized for Base64, and |
| // as much as triple UTF-8 strings <= 65536 chars in length |
| static size_t StorageSize(Handle<Value> val, enum encoding enc); |
| |
| // Precise byte count, but slightly slower for Base64 and |
| // very much slower for UTF-8 |
| static size_t Size(Handle<Value> val, enum encoding enc); |
| |
| // Write the bytes from the string or buffer into the char* |
| // returns the number of bytes written, which will always be |
| // <= buflen. Use StorageSize/Size first to know how much |
| // memory to allocate. |
| static size_t Write(char* buf, |
| size_t buflen, |
| Handle<Value> val, |
| enum encoding enc, |
| int* chars_written = NULL); |
| |
| // Take the bytes in the src, and turn it into a Buffer or String. |
| static Local<Value> Encode(const char* buf, |
| size_t buflen, |
| enum encoding encoding); |
| }; |
| |
| } // namespace node |
| |
| #endif // SRC_STRING_BYTES_H_ |