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Continue moving bits of code out of node.cc ... add node_encoding.cc as a home for `ParseEncoding` and related functions. Backport-PR-URL: #21798 PR-URL: #21112 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| #include "node.h" | ||
| #include "env.h" | ||
| #include "env-inl.h" | ||
| #include "string_bytes.h" | ||
| #include "util.h" | ||
| #include "util-inl.h" | ||
| #include "v8.h" | ||
|
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||
| namespace node { | ||
|
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| using v8::HandleScope; | ||
| using v8::Isolate; | ||
| using v8::Local; | ||
| using v8::Value; | ||
|
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| enum encoding ParseEncoding(const char* encoding, | ||
| enum encoding default_encoding) { | ||
| switch (encoding[0]) { | ||
| case 'u': | ||
| // utf8, utf16le | ||
| if (encoding[1] == 't' && encoding[2] == 'f') { | ||
| // Skip `-` | ||
| encoding += encoding[3] == '-' ? 4 : 3; | ||
| if (encoding[0] == '8' && encoding[1] == '\0') | ||
| return UTF8; | ||
| if (strncmp(encoding, "16le", 4) == 0) | ||
| return UCS2; | ||
|
|
||
| // ucs2 | ||
| } else if (encoding[1] == 'c' && encoding[2] == 's') { | ||
| encoding += encoding[3] == '-' ? 4 : 3; | ||
| if (encoding[0] == '2' && encoding[1] == '\0') | ||
| return UCS2; | ||
| } | ||
| break; | ||
| case 'l': | ||
| // latin1 | ||
| if (encoding[1] == 'a') { | ||
| if (strncmp(encoding + 2, "tin1", 4) == 0) | ||
| return LATIN1; | ||
| } | ||
| break; | ||
| case 'b': | ||
| // binary | ||
| if (encoding[1] == 'i') { | ||
| if (strncmp(encoding + 2, "nary", 4) == 0) | ||
| return LATIN1; | ||
|
|
||
| // buffer | ||
| } else if (encoding[1] == 'u') { | ||
| if (strncmp(encoding + 2, "ffer", 4) == 0) | ||
| return BUFFER; | ||
| } | ||
| break; | ||
| case '\0': | ||
| return default_encoding; | ||
| default: | ||
| break; | ||
| } | ||
|
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||
| if (StringEqualNoCase(encoding, "utf8")) { | ||
| return UTF8; | ||
| } else if (StringEqualNoCase(encoding, "utf-8")) { | ||
| return UTF8; | ||
| } else if (StringEqualNoCase(encoding, "ascii")) { | ||
| return ASCII; | ||
| } else if (StringEqualNoCase(encoding, "base64")) { | ||
| return BASE64; | ||
| } else if (StringEqualNoCase(encoding, "ucs2")) { | ||
| return UCS2; | ||
| } else if (StringEqualNoCase(encoding, "ucs-2")) { | ||
| return UCS2; | ||
| } else if (StringEqualNoCase(encoding, "utf16le")) { | ||
| return UCS2; | ||
| } else if (StringEqualNoCase(encoding, "utf-16le")) { | ||
| return UCS2; | ||
| } else if (StringEqualNoCase(encoding, "latin1")) { | ||
| return LATIN1; | ||
| } else if (StringEqualNoCase(encoding, "binary")) { | ||
| return LATIN1; // BINARY is a deprecated alias of LATIN1. | ||
| } else if (StringEqualNoCase(encoding, "buffer")) { | ||
| return BUFFER; | ||
| } else if (StringEqualNoCase(encoding, "hex")) { | ||
| return HEX; | ||
| } else { | ||
| return default_encoding; | ||
| } | ||
| } | ||
|
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||
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| enum encoding ParseEncoding(Isolate* isolate, | ||
| Local<Value> encoding_v, | ||
| enum encoding default_encoding) { | ||
| CHECK(!encoding_v.IsEmpty()); | ||
|
|
||
| if (!encoding_v->IsString()) | ||
| return default_encoding; | ||
|
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| node::Utf8Value encoding(isolate, encoding_v); | ||
|
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| return ParseEncoding(*encoding, default_encoding); | ||
| } | ||
|
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| Local<Value> Encode(Isolate* isolate, | ||
| const char* buf, | ||
| size_t len, | ||
| enum encoding encoding) { | ||
| CHECK_NE(encoding, UCS2); | ||
| Local<Value> error; | ||
| return StringBytes::Encode(isolate, buf, len, encoding, &error) | ||
| .ToLocalChecked(); | ||
| } | ||
|
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| Local<Value> Encode(Isolate* isolate, const uint16_t* buf, size_t len) { | ||
| Local<Value> error; | ||
| return StringBytes::Encode(isolate, buf, len, &error) | ||
| .ToLocalChecked(); | ||
| } | ||
|
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| // Returns -1 if the handle was not valid for decoding | ||
| ssize_t DecodeBytes(Isolate* isolate, | ||
| Local<Value> val, | ||
| enum encoding encoding) { | ||
| HandleScope scope(isolate); | ||
|
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| return StringBytes::Size(isolate, val, encoding); | ||
| } | ||
|
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| // Returns number of bytes written. | ||
| ssize_t DecodeWrite(Isolate* isolate, | ||
| char* buf, | ||
| size_t buflen, | ||
| Local<Value> val, | ||
| enum encoding encoding) { | ||
| return StringBytes::Write(isolate, buf, buflen, val, encoding, nullptr); | ||
| } | ||
|
|
||
| } // namespace node |