Drop unused functions in HTTPParsers

third_party/WebKit/Source/platform/network/HTTPParsers.cpp

Index: third_party/WebKit/Source/platform/network/HTTPParsers.cpp
diff --git a/third_party/WebKit/Source/platform/network/HTTPParsers.cpp b/third_party/WebKit/Source/platform/network/HTTPParsers.cpp
index 9ac24844f245642c6783e69a0e69e2a15cc719f8..e0431662a4920abd2189f14c7ddef0917b0063b5 100644
--- a/third_party/WebKit/Source/platform/network/HTTPParsers.cpp
+++ b/third_party/WebKit/Source/platform/network/HTTPParsers.cpp
@@ -158,14 +158,6 @@ bool isValidHTTPToken(const String& characters)
     return true;
 }
 
-static const size_t maxInputSampleSize = 128;
-static String trimInputSample(const char* p, size_t length)
-{
-    if (length > maxInputSampleSize)
-        return String(p, maxInputSampleSize) + horizontalEllipsisCharacter;
-    return String(p, length);
-}
-
 ContentDispositionType contentDispositionType(const String& contentDisposition)
 {
     if (contentDisposition.isEmpty())
@@ -264,39 +256,6 @@ double parseDate(const String& value)
     return parseDateFromNullTerminatedCharacters(value.utf8().data());
 }
 
-// FIXME: This function doesn't comply with RFC 6266.
-// For example, this function doesn't handle the interaction between " and ;
-// that arises from quoted-string, nor does this function properly unquote
-// attribute values. Further this function appears to process parameter names
-// in a case-sensitive manner. (There are likely other bugs as well.)
-String filenameFromHTTPContentDisposition(const String& value)
-{
-    Vector<String> keyValuePairs;
-    value.split(';', keyValuePairs);
-
-    unsigned length = keyValuePairs.size();
-    for (unsigned i = 0; i < length; i++) {
-        size_t valueStartPos = keyValuePairs[i].find('=');
-        if (valueStartPos == kNotFound)
-            continue;
-
-        String key = keyValuePairs[i].left(valueStartPos).stripWhiteSpace();
-
-        if (key.isEmpty() || key != "filename")
-            continue;
-
-        String value = keyValuePairs[i].substring(valueStartPos + 1).stripWhiteSpace();
-
-        // Remove quotes if there are any
-        if (value[0] == '\"')
-            value = value.substring(1, value.length() - 2);
-
-        return value;
-    }
-
-    return String();
-}
-
 AtomicString extractMIMETypeFromMediaType(const AtomicString& mediaType)
 {
     StringBuilder mimeType;
@@ -479,14 +438,6 @@ ContentTypeOptionsDisposition parseContentTypeOptionsHeader(const String& header
     return ContentTypeOptionsNone;
 }
 
-String extractReasonPhraseFromHTTPStatusLine(const String& statusLine)
-{
-    size_t spacePos = statusLine.find(' ');
-    // Remove status code from the status line.
-    spacePos = statusLine.find(' ', spacePos + 1);
-    return statusLine.substring(spacePos + 1);
-}
-
 XFrameOptionsDisposition parseXFrameOptionsHeader(const String& header)
 {
     XFrameOptionsDisposition result = XFrameOptionsNone;
@@ -517,229 +468,6 @@ XFrameOptionsDisposition parseXFrameOptionsHeader(const String& header)
     return result;
 }
 
-bool parseRange(const String& range, long long& rangeOffset, long long& rangeEnd, long long& rangeSuffixLength)
-{
-    // The format of "Range" header is defined in RFC 2616 Section 14.35.1.
-    // http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1
-    // We don't support multiple range requests.
-
-    rangeOffset = rangeEnd = rangeSuffixLength = -1;
-
-    // The "bytes" unit identifier should be present.
-    static const char bytesStart[] = "bytes=";
-    if (!range.startsWith(bytesStart, TextCaseInsensitive))
-        return false;
-    String byteRange = range.substring(sizeof(bytesStart) - 1);
-
-    // The '-' character needs to be present.
-    int index = byteRange.find('-');
-    if (index == -1)
-        return false;
-
-    // If the '-' character is at the beginning, the suffix length, which specifies the last N bytes, is provided.
-    // Example:
-    //     -500
-    if (!index) {
-        String suffixLengthString = byteRange.substring(index + 1).stripWhiteSpace();
-        bool ok;
-        long long value = suffixLengthString.toInt64Strict(&ok);
-        if (ok)
-            rangeSuffixLength = value;
-        return true;
-    }
-
-    // Otherwise, the first-byte-position and the last-byte-position are provied.
-    // Examples:
-    //     0-499
-    //     500-
-    String firstBytePosStr = byteRange.left(index).stripWhiteSpace();
-    bool ok;
-    long long firstBytePos = firstBytePosStr.toInt64Strict(&ok);
-    if (!ok)
-        return false;
-
-    String lastBytePosStr = byteRange.substring(index + 1).stripWhiteSpace();
-    long long lastBytePos = -1;
-    if (!lastBytePosStr.isEmpty()) {
-        lastBytePos = lastBytePosStr.toInt64Strict(&ok);
-        if (!ok)
-            return false;
-    }
-
-    if (firstBytePos < 0 || !(lastBytePos == -1 || lastBytePos >= firstBytePos))
-        return false;
-
-    rangeOffset = firstBytePos;
-    rangeEnd = lastBytePos;
-    return true;
-}
-
-// HTTP/1.1 - RFC 2616
-// http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.1
-// Request-Line = Method SP Request-URI SP HTTP-Version CRLF
-size_t parseHTTPRequestLine(const char* data, size_t length, String& failureReason, String& method, String& url, HTTPVersion& httpVersion)
-{
-    method = String();
-    url = String();
-    httpVersion = Unknown;
-
-    const char* space1 = 0;
-    const char* space2 = 0;
-    const char* p;
-    size_t consumedLength;
-
-    for (p = data, consumedLength = 0; consumedLength < length; p++, consumedLength++) {
-        if (*p == ' ') {
-            if (!space1)
-                space1 = p;
-            else if (!space2)
-                space2 = p;
-        } else if (*p == '\n') {
-            break;
-        }
-    }
-
-    // Haven't finished header line.
-    if (consumedLength == length) {
-        failureReason = "Incomplete Request Line";
-        return 0;
-    }
-
-    // RequestLine does not contain 3 parts.
-    if (!space1 || !space2) {
-        failureReason = "Request Line does not appear to contain: <Method> <Url> <HTTPVersion>.";
-        return 0;
-    }
-
-    // The line must end with "\r\n".
-    const char* end = p + 1;
-    if (*(end - 2) != '\r') {
-        failureReason = "Request line does not end with CRLF";
-        return 0;
-    }
-
-    // Request Method.
-    method = String(data, space1 - data); // For length subtract 1 for space, but add 1 for data being the first character.
-
-    // Request URI.
-    url = String(space1 + 1, space2 - space1 - 1); // For length subtract 1 for space.
-
-    // HTTP Version.
-    String httpVersionString(space2 + 1, end - space2 - 3); // For length subtract 1 for space, and 2 for "\r\n".
-    if (httpVersionString.length() != 8 || !httpVersionString.startsWith("HTTP/1."))
-        httpVersion = Unknown;
-    else if (httpVersionString[7] == '0')
-        httpVersion = HTTP_1_0;
-    else if (httpVersionString[7] == '1')
-        httpVersion = HTTP_1_1;
-    else
-        httpVersion = Unknown;
-
-    return end - data;
-}
-
-static bool parseHTTPHeaderName(const char* s, size_t start, size_t size, String& failureReason, size_t* position, AtomicString* name)
-{
-    size_t nameBegin = start;
-    for (size_t i = start; i < size; ++i) {
-        switch (s[i]) {
-        case '\r':
-            failureReason = "Unexpected CR in name at " + trimInputSample(&s[nameBegin], i - nameBegin);
-            return false;
-        case '\n':
-            failureReason = "Unexpected LF in name at " + trimInputSample(&s[nameBegin], i - nameBegin);
-            return false;
-        case ':':
-            if (i == nameBegin) {
-                failureReason = "Header name is missing";
-                return false;
-            }
-            *name = AtomicString::fromUTF8(&s[nameBegin], i - nameBegin);
-            if (name->isNull()) {
-                failureReason = "Invalid UTF-8 sequence in header name";
-                return false;
-            }
-            *position = i;
-            return true;
-        default:
-            break;
-        }
-    }
-    failureReason = "Unterminated header name";
-    return false;
-}
-
-static bool parseHTTPHeaderValue(const char* s, size_t start, size_t size, String& failureReason, size_t* position, AtomicString* value)
-{
-    size_t i = start;
-    for (; i < size && s[i] == ' '; ++i) {
-    }
-    size_t valueBegin = i;
-
-    for (; i < size && s[i] != '\r'; ++i) {
-        if (s[i] == '\n') {
-            failureReason = "Unexpected LF in value at " + trimInputSample(&s[valueBegin], i - valueBegin);
-            return false;
-        }
-    }
-    if (i == size) {
-        failureReason = "Unterminated header value";
-        return false;
-    }
-
-    ASSERT(i < size && s[i] == '\r');
-    if (i + 1 >= size || s[i + 1] != '\n') {
-        failureReason = "LF doesn't follow CR after value at " + trimInputSample(&s[i + 1], size - i - 1);
-        return false;
-    }
-
-    *value = AtomicString::fromUTF8(&s[valueBegin], i - valueBegin);
-    if (i != valueBegin && value->isNull()) {
-        failureReason = "Invalid UTF-8 sequence in header value";
-        return false;
-    }
-
-    // 2 for strlen("\r\n")
-    *position = i + 2;
-    return true;
-}
-
-// Note that the header is already parsed and re-formatted in chromium side.
-// We assume that the input is more restricted than RFC2616.
-size_t parseHTTPHeader(const char* s, size_t size, String& failureReason, AtomicString& name, AtomicString& value)
-{
-    name = nullAtom;
-    value = nullAtom;
-    if (size >= 1 && s[0] == '\r') {
-        if (size >= 2 && s[1] == '\n') {
-            // Skip an empty line.
-            return 2;
-        }
-        failureReason = "LF doesn't follow CR at " + trimInputSample(0, size);
-        return 0;
-    }
-    size_t current = 0;
-    if (!parseHTTPHeaderName(s, current, size, failureReason, &current, &name)) {
-        return 0;
-    }
-    ASSERT(s[current] == ':');
-    ++current;
-
-    if (!parseHTTPHeaderValue(s, current, size, failureReason, &current, &value)) {
-        return 0;
-    }
-
-    return current;
-}
-
-size_t parseHTTPRequestBody(const char* data, size_t length, Vector<unsigned char>& body)
-{
-    body.clear();
-    body.append(data, length);
-
-    return length;
-}
-
 static bool isCacheHeaderSeparator(UChar c)
 {
     // See RFC 2616, Section 2.2