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Diffstat (limited to '')
| -rw-r--r-- | sal/rtl/uri.cxx | 759 |
1 files changed, 759 insertions, 0 deletions
diff --git a/sal/rtl/uri.cxx b/sal/rtl/uri.cxx new file mode 100644 index 000000000..341455261 --- /dev/null +++ b/sal/rtl/uri.cxx @@ -0,0 +1,759 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <rtl/character.hxx> +#include <rtl/strbuf.hxx> +#include <rtl/textenc.h> +#include <rtl/textcvt.h> +#include <rtl/uri.h> +#include <rtl/uri.hxx> +#include <rtl/ustrbuf.h> +#include <rtl/ustrbuf.hxx> +#include <rtl/ustring.h> +#include <rtl/ustring.hxx> +#include <sal/types.h> +#include <sal/macros.h> + +#include <uri_internal.hxx> + +#include <algorithm> +#include <cstddef> + +namespace { + +sal_Unicode const cEscapePrefix = 0x25; // '%' + +int getHexWeight(sal_uInt32 nUtf32) +{ + return nUtf32 >= 0x30 && nUtf32 <= 0x39 ? // '0'--'9' + static_cast< int >(nUtf32 - 0x30) : + nUtf32 >= 0x41 && nUtf32 <= 0x46 ? // 'A'--'F' + static_cast< int >(nUtf32 - 0x41 + 10) : + nUtf32 >= 0x61 && nUtf32 <= 0x66 ? // 'a'--'f' + static_cast< int >(nUtf32 - 0x61 + 10) : + -1; // not a hex digit +} + +bool isValid(sal_Bool const * pCharClass, sal_uInt32 nUtf32) +{ + return nUtf32 < rtl::UriCharClassSize && pCharClass[nUtf32]; +} + +void writeUnicode(rtl_uString ** pBuffer, sal_Int32 * pCapacity, + sal_Unicode cChar) +{ + rtl_uStringbuffer_insert(pBuffer, pCapacity, (*pBuffer)->length, &cChar, 1); +} + +} + +namespace rtl::uri::detail { + +/** Read any of the following: + + @li sequence of escape sequences representing character from eCharset, + translated to single UCS4 character; or + @li pair of UTF-16 surrogates, translated to single UCS4 character; or + @li single UTF-16 character, extended to UCS4 character. + */ +sal_uInt32 readUcs4(sal_Unicode const ** pBegin, sal_Unicode const * pEnd, + bool bEncoded, rtl_TextEncoding eCharset, + EscapeType * pType) +{ + sal_uInt32 nChar = *(*pBegin)++; + int nWeight1; + int nWeight2; + if (nChar == cEscapePrefix && bEncoded && pEnd - *pBegin >= 2 + && (nWeight1 = getHexWeight((*pBegin)[0])) >= 0 + && (nWeight2 = getHexWeight((*pBegin)[1])) >= 0) + { + *pBegin += 2; + nChar = static_cast< sal_uInt32 >(nWeight1 << 4 | nWeight2); + if (nChar <= 0x7F) + { + *pType = EscapeChar; + } + else if (eCharset == RTL_TEXTENCODING_UTF8) + { + if (nChar >= 0xC0 && nChar <= 0xF4) + { + sal_uInt32 nEncoded; + int nShift; + sal_uInt32 nMin; + if (nChar <= 0xDF) + { + nEncoded = (nChar & 0x1F) << 6; + nShift = 0; + nMin = 0x80; + } + else if (nChar <= 0xEF) + { + nEncoded = (nChar & 0x0F) << 12; + nShift = 6; + nMin = 0x800; + } + else + { + nEncoded = (nChar & 0x07) << 18; + nShift = 12; + nMin = 0x10000; + } + + sal_Unicode const * p = *pBegin; + bool bUTF8 = true; + + for (; nShift >= 0; nShift -= 6) + { + if (pEnd - p < 3 || p[0] != cEscapePrefix + || (nWeight1 = getHexWeight(p[1])) < 8 + || nWeight1 > 11 + || (nWeight2 = getHexWeight(p[2])) < 0) + { + bUTF8 = false; + break; + } + p += 3; + nEncoded |= ((nWeight1 & 3) << 4 | nWeight2) << nShift; + } + if (bUTF8 && rtl::isUnicodeScalarValue(nEncoded) + && nEncoded >= nMin) + { + *pBegin = p; + *pType = EscapeChar; + return nEncoded; + } + } + *pType = EscapeOctet; + } + else + { + OStringBuffer aBuf; + aBuf.append(static_cast< char >(nChar)); + rtl_TextToUnicodeConverter aConverter + = rtl_createTextToUnicodeConverter(eCharset); + sal_Unicode const * p = *pBegin; + + for (;;) + { + sal_Unicode aDst[2]; + sal_uInt32 nInfo; + sal_Size nConverted; + sal_Size nDstSize = rtl_convertTextToUnicode( + aConverter, nullptr, aBuf.getStr(), aBuf.getLength(), aDst, + SAL_N_ELEMENTS( aDst ), + (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR + | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR + | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR), + &nInfo, &nConverted); + + if (nInfo == 0) + { + assert( nConverted + == sal::static_int_cast< sal_uInt32 >( + aBuf.getLength())); + + rtl_destroyTextToUnicodeConverter(aConverter); + *pBegin = p; + *pType = EscapeChar; + + assert( nDstSize == 1 + || (nDstSize == 2 && rtl::isHighSurrogate(aDst[0]) + && rtl::isLowSurrogate(aDst[1]))); + + return nDstSize == 1 + ? aDst[0] : rtl::combineSurrogates(aDst[0], aDst[1]); + } + if (nInfo == RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL + && pEnd - p >= 3 && p[0] == cEscapePrefix + && (nWeight1 = getHexWeight(p[1])) >= 0 + && (nWeight2 = getHexWeight(p[2])) >= 0) + { + p += 3; + aBuf.append(static_cast< char >(nWeight1 << 4 | nWeight2)); + } + else if (nInfo == RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL + && p != pEnd && *p <= 0x7F) + { + aBuf.append(static_cast< char >(*p++)); + } + else + { + assert( + (nInfo & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL) + == 0); + break; + } + } + rtl_destroyTextToUnicodeConverter(aConverter); + *pType = EscapeOctet; + } + return nChar; + } + + *pType = EscapeNo; + return rtl::isHighSurrogate(nChar) && *pBegin < pEnd + && rtl::isLowSurrogate(**pBegin) ? + rtl::combineSurrogates(nChar, *(*pBegin)++) : nChar; +} + +} + +namespace { + +void writeUcs4(rtl_uString ** pBuffer, sal_Int32 * pCapacity, sal_uInt32 nUtf32) +{ + rtl_uStringbuffer_insertUtf32(pBuffer, pCapacity, (*pBuffer)->length, nUtf32); +} + +void writeEscapeOctet(rtl_uString ** pBuffer, sal_Int32 * pCapacity, + sal_uInt32 nOctet) +{ + assert(nOctet <= 0xFF); // bad octet + + static sal_Unicode const aHex[16] + = { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, + 0x41, 0x42, 0x43, 0x44, 0x45, 0x46 }; /* '0'--'9', 'A'--'F' */ + + writeUnicode(pBuffer, pCapacity, cEscapePrefix); + writeUnicode(pBuffer, pCapacity, aHex[nOctet >> 4]); + writeUnicode(pBuffer, pCapacity, aHex[nOctet & 15]); +} + +bool writeEscapeChar(rtl_uString ** pBuffer, sal_Int32 * pCapacity, + sal_uInt32 nUtf32, rtl_TextEncoding eCharset, bool bStrict) +{ + assert(rtl::isUnicodeCodePoint(nUtf32)); + if (eCharset == RTL_TEXTENCODING_UTF8) + { + if (nUtf32 < 0x80) + { + writeEscapeOctet(pBuffer, pCapacity, nUtf32); + } + else if (nUtf32 < 0x800) + { + writeEscapeOctet(pBuffer, pCapacity, nUtf32 >> 6 | 0xC0); + writeEscapeOctet(pBuffer, pCapacity, (nUtf32 & 0x3F) | 0x80); + } + else if (nUtf32 < 0x10000) + { + writeEscapeOctet(pBuffer, pCapacity, nUtf32 >> 12 | 0xE0); + writeEscapeOctet(pBuffer, pCapacity, (nUtf32 >> 6 & 0x3F) | 0x80); + writeEscapeOctet(pBuffer, pCapacity, (nUtf32 & 0x3F) | 0x80); + } + else + { + writeEscapeOctet(pBuffer, pCapacity, nUtf32 >> 18 | 0xF0); + writeEscapeOctet(pBuffer, pCapacity, (nUtf32 >> 12 & 0x3F) | 0x80); + writeEscapeOctet(pBuffer, pCapacity, (nUtf32 >> 6 & 0x3F) | 0x80); + writeEscapeOctet(pBuffer, pCapacity, (nUtf32 & 0x3F) | 0x80); + } + } + else + { + rtl_UnicodeToTextConverter aConverter + = rtl_createUnicodeToTextConverter(eCharset); + sal_Unicode aSrc[2]; + sal_Size nSrcSize = rtl::splitSurrogates(nUtf32, aSrc); + + char aDst[32]; // FIXME random value + sal_uInt32 nInfo; + sal_Size nConverted; + sal_Size nDstSize = rtl_convertUnicodeToText( + aConverter, nullptr, aSrc, nSrcSize, aDst, sizeof aDst, + RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR + | RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR + | RTL_UNICODETOTEXT_FLAGS_FLUSH, + &nInfo, &nConverted); + assert((nInfo & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL) == 0); + rtl_destroyUnicodeToTextConverter(aConverter); + + if (nInfo == 0) + { + assert(nConverted == nSrcSize); // bad rtl_convertUnicodeToText + + for (sal_Size i = 0; i < nDstSize; ++i) + { + writeEscapeOctet(pBuffer, pCapacity, + static_cast< unsigned char >(aDst[i])); + // FIXME all octets are escaped, even if there is no need + } + } + else + { + if (bStrict) + return false; + + writeUcs4(pBuffer, pCapacity, nUtf32); + } + } + return true; +} + +struct Component +{ + sal_Unicode const * pBegin; + sal_Unicode const * pEnd; + + Component(): pBegin(nullptr), pEnd(nullptr) {} + + bool isPresent() const { return pBegin != nullptr; } + + sal_Int32 getLength() const; +}; + +sal_Int32 Component::getLength() const +{ + assert(isPresent()); // taking length of non-present component + return static_cast< sal_Int32 >(pEnd - pBegin); +} + +struct Components +{ + Component aScheme; + Component aAuthority; + Component aPath; + Component aQuery; + Component aFragment; +}; + +void parseUriRef(rtl_uString const * pUriRef, Components * pComponents) +{ + // This algorithm is liberal and accepts various forms of illegal input. + + sal_Unicode const * pBegin = pUriRef->buffer; + sal_Unicode const * pEnd = pBegin + pUriRef->length; + sal_Unicode const * pPos = pBegin; + + if (pPos != pEnd && rtl::isAsciiAlpha(*pPos)) + { + for (sal_Unicode const * p = pPos + 1; p != pEnd; ++p) + { + if (*p == ':') + { + pComponents->aScheme.pBegin = pBegin; + pComponents->aScheme.pEnd = ++p; + pPos = p; + break; + } + + if (!rtl::isAsciiAlphanumeric(*p) && *p != '+' && *p != '-' + && *p != '.') + { + break; + } + } + } + + if (pEnd - pPos >= 2 && pPos[0] == '/' && pPos[1] == '/') + { + pComponents->aAuthority.pBegin = pPos; + pPos += 2; + while (pPos != pEnd && *pPos != '/' && *pPos != '?' && *pPos != '#') + { + ++pPos; + } + + pComponents->aAuthority.pEnd = pPos; + } + + pComponents->aPath.pBegin = pPos; + while (pPos != pEnd && *pPos != '?' && * pPos != '#') + { + ++pPos; + } + + pComponents->aPath.pEnd = pPos; + + if (pPos != pEnd && *pPos == '?') + { + pComponents->aQuery.pBegin = pPos++; + while (pPos != pEnd && * pPos != '#') + { + ++pPos; + } + + pComponents->aQuery.pEnd = pPos; + } + + if (pPos != pEnd) + { + assert(*pPos == '#'); + pComponents->aFragment.pBegin = pPos; + pComponents->aFragment.pEnd = pEnd; + } +} + +void appendPath( + OUStringBuffer & buffer, sal_Int32 bufferStart, bool precedingSlash, + sal_Unicode const * pathBegin, sal_Unicode const * pathEnd) +{ + while (precedingSlash || pathBegin != pathEnd) + { + sal_Unicode const * p = pathBegin; + while (p != pathEnd && *p != '/') + { + ++p; + } + + std::size_t n = p - pathBegin; + if (n == 1 && pathBegin[0] == '.') + { + // input begins with "." -> remove from input (and done): + // i.e., !precedingSlash -> !precedingSlash + // input begins with "./" -> remove from input: + // i.e., !precedingSlash -> !precedingSlash + // input begins with "/." -> replace with "/" in input (and not yet + // done): + // i.e., precedingSlash -> precedingSlash + // input begins with "/./" -> replace with "/" in input: + // i.e., precedingSlash -> precedingSlash + } + else if (n == 2 && pathBegin[0] == '.' && pathBegin[1] == '.') + { + // input begins with ".." -> remove from input (and done): + // i.e., !precedingSlash -> !precedingSlash + // input begins with "../" -> remove from input + // i.e., !precedingSlash -> !precedingSlash + // input begins with "/.." -> replace with "/" in input, and shrink + // output (not yet done): + // i.e., precedingSlash -> precedingSlash + // input begins with "/../" -> replace with "/" in input, and shrink + // output: + // i.e., precedingSlash -> precedingSlash + if (precedingSlash) + { + buffer.truncate( + bufferStart + + std::max<sal_Int32>( + rtl_ustr_lastIndexOfChar_WithLength( + buffer.getStr() + bufferStart, + buffer.getLength() - bufferStart, '/'), + 0)); + } + } + else + { + if (precedingSlash) + buffer.append('/'); + + buffer.append(pathBegin, n); + precedingSlash = p != pathEnd; + } + pathBegin = p + (p == pathEnd ? 0 : 1); + } +} + +} + +sal_Bool const * SAL_CALL rtl_getUriCharClass(rtl_UriCharClass eCharClass) + SAL_THROW_EXTERN_C() +{ + static constexpr std::array<sal_Bool, rtl::UriCharClassSize> aCharClass[] = { + rtl::createUriCharClass(u8""), // None + rtl::createUriCharClass( + u8"!$&'()*+,-./:;=?@[]_~" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"), // Uric + rtl::createUriCharClass( + u8"!$&'()*+,-.:;=?@_~" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"), // UricNoSlash + rtl::createUriCharClass( + u8"!$&'()*+,-.;=@_~" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"), // RelSegment + rtl::createUriCharClass( + u8"!$&'()*+,-.:;=@_~" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"), // RegName + rtl::createUriCharClass( + u8"!$&'()*+,-.:;=_~" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"), // Userinfo + rtl::createUriCharClass( + u8"!$&'()*+,-.:=@_~" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"), // Pchar + rtl::createUriCharClass( + u8"!$&'()*+-./:?@_~" + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")}; // UnoParamValue + + assert( + (eCharClass >= 0 + && (sal::static_int_cast< std::size_t >(eCharClass) + < SAL_N_ELEMENTS(aCharClass)))); // bad eCharClass + return aCharClass[eCharClass].data(); +} + +void SAL_CALL rtl_uriEncode(rtl_uString * pText, sal_Bool const * pCharClass, + rtl_UriEncodeMechanism eMechanism, + rtl_TextEncoding eCharset, rtl_uString ** pResult) + SAL_THROW_EXTERN_C() +{ + assert(!pCharClass[0x25]); // make sure the percent sign is encoded... + + sal_Unicode const * p = pText->buffer; + sal_Unicode const * pEnd = p + pText->length; + sal_Int32 nCapacity = 256; + rtl_uString_new_WithLength(pResult, nCapacity); + + while (p < pEnd) + { + rtl::uri::detail::EscapeType eType; + sal_uInt32 nUtf32 = rtl::uri::detail::readUcs4( + &p, pEnd, + (eMechanism == rtl_UriEncodeKeepEscapes + || eMechanism == rtl_UriEncodeCheckEscapes + || eMechanism == rtl_UriEncodeStrictKeepEscapes), + eCharset, &eType); + + switch (eType) + { + case rtl::uri::detail::EscapeNo: + if (isValid(pCharClass, nUtf32)) // implies nUtf32 <= 0x7F + { + writeUnicode(pResult, &nCapacity, + static_cast< sal_Unicode >(nUtf32)); + } + else if (!writeEscapeChar( + pResult, &nCapacity, nUtf32, eCharset, + (eMechanism == rtl_UriEncodeStrict + || eMechanism == rtl_UriEncodeStrictKeepEscapes))) + { + rtl_uString_new(pResult); + return; + } + break; + + case rtl::uri::detail::EscapeChar: + if (eMechanism == rtl_UriEncodeCheckEscapes + && isValid(pCharClass, nUtf32)) // implies nUtf32 <= 0x7F + { + writeUnicode(pResult, &nCapacity, + static_cast< sal_Unicode >(nUtf32)); + } + else if (!writeEscapeChar( + pResult, &nCapacity, nUtf32, eCharset, + (eMechanism == rtl_UriEncodeStrict + || eMechanism == rtl_UriEncodeStrictKeepEscapes))) + { + rtl_uString_new(pResult); + return; + } + break; + + case rtl::uri::detail::EscapeOctet: + writeEscapeOctet(pResult, &nCapacity, nUtf32); + break; + } + } + *pResult = rtl_uStringBuffer_makeStringAndClear(pResult, &nCapacity); +} + +void SAL_CALL rtl_uriDecode(rtl_uString * pText, + rtl_UriDecodeMechanism eMechanism, + rtl_TextEncoding eCharset, rtl_uString ** pResult) + SAL_THROW_EXTERN_C() +{ + switch (eMechanism) + { + case rtl_UriDecodeNone: + rtl_uString_assign(pResult, pText); + break; + + case rtl_UriDecodeToIuri: + eCharset = RTL_TEXTENCODING_UTF8; + [[fallthrough]]; + default: // rtl_UriDecodeWithCharset, rtl_UriDecodeStrict + { + sal_Unicode const * p = pText->buffer; + sal_Unicode const * pEnd = p + pText->length; + sal_Int32 nCapacity = pText->length; + rtl_uString_new_WithLength(pResult, nCapacity); + + while (p < pEnd) + { + rtl::uri::detail::EscapeType eType; + sal_uInt32 nUtf32 = rtl::uri::detail::readUcs4(&p, pEnd, true, eCharset, &eType); + switch (eType) + { + case rtl::uri::detail::EscapeChar: + if (nUtf32 <= 0x7F && eMechanism == rtl_UriDecodeToIuri) + { + writeEscapeOctet(pResult, &nCapacity, nUtf32); + break; + } + [[fallthrough]]; + + case rtl::uri::detail::EscapeNo: + writeUcs4(pResult, &nCapacity, nUtf32); + break; + + case rtl::uri::detail::EscapeOctet: + if (eMechanism == rtl_UriDecodeStrict) + { + rtl_uString_new(pResult); + return; + } + writeEscapeOctet(pResult, &nCapacity, nUtf32); + break; + } + } + + *pResult = rtl_uStringBuffer_makeStringAndClear( pResult, &nCapacity ); + } + break; + } +} + +sal_Bool SAL_CALL rtl_uriConvertRelToAbs(rtl_uString * pBaseUriRef, + rtl_uString * pRelUriRef, + rtl_uString ** pResult, + rtl_uString ** pException) + SAL_THROW_EXTERN_C() +{ + // Use the strict parser algorithm from RFC 3986, section 5.2, to turn the + // relative URI into an absolute one: + Components aRelComponents; + parseUriRef(pRelUriRef, &aRelComponents); + OUStringBuffer aBuffer(256); + + if (aRelComponents.aScheme.isPresent()) + { + aBuffer.append(aRelComponents.aScheme.pBegin, + aRelComponents.aScheme.getLength()); + + if (aRelComponents.aAuthority.isPresent()) + { + aBuffer.append(aRelComponents.aAuthority.pBegin, + aRelComponents.aAuthority.getLength()); + } + + appendPath( + aBuffer, aBuffer.getLength(), false, aRelComponents.aPath.pBegin, + aRelComponents.aPath.pEnd); + + if (aRelComponents.aQuery.isPresent()) + { + aBuffer.append(aRelComponents.aQuery.pBegin, + aRelComponents.aQuery.getLength()); + } + } + else + { + Components aBaseComponents; + parseUriRef(pBaseUriRef, &aBaseComponents); + if (!aBaseComponents.aScheme.isPresent()) + { + rtl_uString_assign( + pException, + (OUString( + "<" + OUString::unacquired(&pBaseUriRef) + + "> does not start with a scheme component") + .pData)); + return false; + } + + aBuffer.append(aBaseComponents.aScheme.pBegin, + aBaseComponents.aScheme.getLength()); + if (aRelComponents.aAuthority.isPresent()) + { + aBuffer.append(aRelComponents.aAuthority.pBegin, + aRelComponents.aAuthority.getLength()); + appendPath( + aBuffer, aBuffer.getLength(), false, + aRelComponents.aPath.pBegin, aRelComponents.aPath.pEnd); + + if (aRelComponents.aQuery.isPresent()) + { + aBuffer.append(aRelComponents.aQuery.pBegin, + aRelComponents.aQuery.getLength()); + } + } + else + { + if (aBaseComponents.aAuthority.isPresent()) + { + aBuffer.append(aBaseComponents.aAuthority.pBegin, + aBaseComponents.aAuthority.getLength()); + } + + if (aRelComponents.aPath.pBegin == aRelComponents.aPath.pEnd) + { + aBuffer.append(aBaseComponents.aPath.pBegin, + aBaseComponents.aPath.getLength()); + if (aRelComponents.aQuery.isPresent()) + { + aBuffer.append(aRelComponents.aQuery.pBegin, + aRelComponents.aQuery.getLength()); + } + else if (aBaseComponents.aQuery.isPresent()) + { + aBuffer.append(aBaseComponents.aQuery.pBegin, + aBaseComponents.aQuery.getLength()); + } + } + else + { + if (*aRelComponents.aPath.pBegin == '/') + { + appendPath( + aBuffer, aBuffer.getLength(), false, + aRelComponents.aPath.pBegin, aRelComponents.aPath.pEnd); + } + else if (aBaseComponents.aAuthority.isPresent() + && aBaseComponents.aPath.pBegin + == aBaseComponents.aPath.pEnd) + { + appendPath( + aBuffer, aBuffer.getLength(), true, + aRelComponents.aPath.pBegin, aRelComponents.aPath.pEnd); + } + else + { + sal_Int32 n = aBuffer.getLength(); + sal_Int32 i = rtl_ustr_lastIndexOfChar_WithLength( + aBaseComponents.aPath.pBegin, + aBaseComponents.aPath.getLength(), '/'); + + if (i >= 0) + { + appendPath( + aBuffer, n, false, aBaseComponents.aPath.pBegin, + aBaseComponents.aPath.pBegin + i); + } + + appendPath( + aBuffer, n, i >= 0, aRelComponents.aPath.pBegin, + aRelComponents.aPath.pEnd); + } + + if (aRelComponents.aQuery.isPresent()) + { + aBuffer.append(aRelComponents.aQuery.pBegin, + aRelComponents.aQuery.getLength()); + } + } + } + } + if (aRelComponents.aFragment.isPresent()) + { + aBuffer.append(aRelComponents.aFragment.pBegin, + aRelComponents.aFragment.getLength()); + } + + rtl_uString_assign(pResult, aBuffer.makeStringAndClear().pData); + return true; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |