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133 lines
4.6 KiB
C++
133 lines
4.6 KiB
C++
/*
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******************************************************************************
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*
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* Copyright (C) 2008-2011, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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******************************************************************************
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* file name: uspoof_conf.h
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2009Jan05
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* created by: Andy Heninger
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*
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* Internal classes for compiling confusable data into its binary (runtime) form.
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*/
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#ifndef __USPOOF_BUILDCONF_H__
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#define __USPOOF_BUILDCONF_H__
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#if !UCONFIG_NO_NORMALIZATION
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#if !UCONFIG_NO_REGULAR_EXPRESSIONS
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#include "uspoof_impl.h"
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U_NAMESPACE_BEGIN
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// SPUString
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// Holds a string that is the result of one of the mappings defined
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// by the confusable mapping data (confusables.txt from Unicode.org)
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// Instances of SPUString exist during the compilation process only.
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struct SPUString : public UMemory {
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UnicodeString *fStr; // The actual string.
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int32_t fStrTableIndex; // Index into the final runtime data for this string.
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// (or, for length 1, the single string char itself,
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// there being no string table entry for it.)
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SPUString(UnicodeString *s);
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~SPUString();
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};
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// String Pool A utility class for holding the strings that are the result of
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// the spoof mappings. These strings will utimately end up in the
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// run-time String Table.
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// This is sort of like a sorted set of strings, except that ICU's anemic
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// built-in collections don't support those, so it is implemented with a
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// combination of a uhash and a UVector.
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class SPUStringPool : public UMemory {
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public:
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SPUStringPool(UErrorCode &status);
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~SPUStringPool();
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// Add a string. Return the string from the table.
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// If the input parameter string is already in the table, delete the
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// input parameter and return the existing string.
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SPUString *addString(UnicodeString *src, UErrorCode &status);
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// Get the n-th string in the collection.
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SPUString *getByIndex(int32_t i);
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// Sort the contents; affects the ordering of getByIndex().
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void sort(UErrorCode &status);
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int32_t size();
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private:
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UVector *fVec; // Elements are SPUString *
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UHashtable *fHash; // Key: UnicodeString Value: SPUString
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};
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// class ConfusabledataBuilder
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// An instance of this class exists while the confusable data is being built from source.
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// It encapsulates the intermediate data structures that are used for building.
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// It exports one static function, to do a confusable data build.
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class ConfusabledataBuilder : public UMemory {
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private:
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SpoofImpl *fSpoofImpl;
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UChar *fInput;
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UHashtable *fSLTable;
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UHashtable *fSATable;
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UHashtable *fMLTable;
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UHashtable *fMATable;
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UnicodeSet *fKeySet; // A set of all keys (UChar32s) that go into the four mapping tables.
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// The binary data is first assembled into the following four collections, then
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// copied to its final raw-memory destination.
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UVector *fKeyVec;
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UVector *fValueVec;
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UnicodeString *fStringTable;
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UVector *fStringLengthsTable;
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SPUStringPool *stringPool;
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URegularExpression *fParseLine;
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URegularExpression *fParseHexNum;
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int32_t fLineNum;
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ConfusabledataBuilder(SpoofImpl *spImpl, UErrorCode &status);
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~ConfusabledataBuilder();
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void build(const char * confusables, int32_t confusablesLen, UErrorCode &status);
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// Add an entry to the key and value tables being built
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// input: data from SLTable, MATable, etc.
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// outut: entry added to fKeyVec and fValueVec
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void addKeyEntry(UChar32 keyChar, // The key character
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UHashtable *table, // The table, one of SATable, MATable, etc.
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int32_t tableFlag, // One of USPOOF_SA_TABLE_FLAG, etc.
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UErrorCode &status);
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// From an index into fKeyVec & fValueVec
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// get a UnicodeString with the corresponding mapping.
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UnicodeString getMapping(int32_t index);
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// Populate the final binary output data array with the compiled data.
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void outputData(UErrorCode &status);
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public:
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static void buildConfusableData(SpoofImpl *spImpl, const char * confusables,
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int32_t confusablesLen, int32_t *errorType, UParseError *pe, UErrorCode &status);
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};
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U_NAMESPACE_END
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#endif
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#endif // !UCONFIG_NO_REGULAR_EXPRESSIONS
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#endif // __USPOOF_BUILDCONF_H__
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