icuSources/tools/toolutil/ppucd.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 *******************************************************************************
   5 *   Copyright (C) 2011-2013, International Business Machines
   6 *   Corporation and others.  All Rights Reserved.
   7 *******************************************************************************
   8 *   file name:  ppucd.h
   9 *   encoding:   UTF-8
  10 *   tab size:   8 (not used)
  11 *   indentation:4
  12 *
  13 *   created on: 2011dec11
  14 *   created by: Markus W. Scherer
  15 */
  16
  17 #ifndef __PPUCD_H__
  18 #define __PPUCD_H__
  19
  20 #include "unicode/utypes.h"
  21 #include "unicode/uniset.h"
  22 #include "unicode/unistr.h"
  23
  24 #include <stdio.h>
  25
  26 /** Additions to the uchar.h enum UProperty. */
  27 enum {
  28     /** Name_Alias */
  29     PPUCD_NAME_ALIAS=UCHAR_STRING_LIMIT,
  30     PPUCD_CONDITIONAL_CASE_MAPPINGS,
  31     PPUCD_TURKIC_CASE_FOLDING
  32 };
  33
  34 U_NAMESPACE_BEGIN
  35
  36 class U_TOOLUTIL_API PropertyNames {
  37 public:
  38     virtual ~PropertyNames();
  39     virtual int32_t getPropertyEnum(const char *name) const;
  40     virtual int32_t getPropertyValueEnum(int32_t property, const char *name) const;
  41 };
  42
  43 struct U_TOOLUTIL_API UniProps {
  44     UniProps();
  45     ~UniProps();
  46
  47     int32_t getIntProp(int32_t prop) const { return intProps[prop-UCHAR_INT_START]; }
  48
  49     UChar32 start, end;
  50     UBool binProps[UCHAR_BINARY_LIMIT];
  51     int32_t intProps[UCHAR_INT_LIMIT-UCHAR_INT_START];
  52     UVersionInfo age;
  53     UChar32 bmg, bpb;
  54     UChar32 scf, slc, stc, suc;
  55     int32_t digitValue;
  56     const char *numericValue;
  57     const char *name;
  58     const char *nameAlias;
  59     UnicodeString cf, lc, tc, uc;
  60     UnicodeSet scx;
  61 };
  62
  63 class U_TOOLUTIL_API PreparsedUCD {
  64 public:
  65     enum LineType {
  66         /** No line, end of file. */
  67         NO_LINE,
  68         /** Empty line. (Might contain a comment.) */
  69         EMPTY_LINE,
  70
  71         /** ucd;6.1.0 */
  72         UNICODE_VERSION_LINE,
  73
  74         /** property;Binary;Alpha;Alphabetic */
  75         PROPERTY_LINE,
  76         /** binary;N;No;F;False */
  77         BINARY_LINE,
  78         /** value;gc;Zs;Space_Separator */
  79         VALUE_LINE,
  80
  81         /** defaults;0000..10FFFF;age=NA;bc=L;... */
  82         DEFAULTS_LINE,
  83         /** block;0000..007F;age=1.1;blk=ASCII;ea=Na;... */
  84         BLOCK_LINE,
  85         /** cp;0030;AHex;bc=EN;gc=Nd;na=DIGIT ZERO;... */
  86         CP_LINE,
  87
  88         /** algnamesrange;4E00..9FCC;han;CJK UNIFIED IDEOGRAPH- */
  89         ALG_NAMES_RANGE_LINE,
  90
  91         LINE_TYPE_COUNT
  92     };
  93
  94     /**
  95      * Constructor.
  96      * Prepare this object for a new, empty package.
  97      */
  98     PreparsedUCD(const char *filename, UErrorCode &errorCode);
  99
 100     /** Destructor. */
 101     ~PreparsedUCD();
 102
 103     /** Sets (aliases) a non-standard PropertyNames implementation. Caller retains ownership. */
 104     void setPropertyNames(const PropertyNames *pn) { pnames=pn; }
 105
 106     /**
 107      * Reads a line from the preparsed UCD file.
 108      * Splits the line by replacing each ';' with a NUL.
 109      */
 110     LineType readLine(UErrorCode &errorCode);
 111
 112     /** Returns the number of the line read by readLine(). */
 113     int32_t getLineNumber() const { return lineNumber; }
 114
 115     /** Returns the line's next field, or NULL. */
 116     const char *nextField();
 117
 118     /** Returns the Unicode version when or after the UNICODE_VERSION_LINE has been read. */
 119     const UVersionInfo &getUnicodeVersion() const { return ucdVersion; }
 120
 121     /** Returns TRUE if the current line has property values. */
 122     UBool lineHasPropertyValues() const { return DEFAULTS_LINE<=lineType && lineType<=CP_LINE; }
 123
 124     /**
 125      * Parses properties from the current line.
 126      * Clears newValues and sets UProperty codes for property values mentioned
 127      * on the current line (as opposed to being inherited).
 128      * Returns a pointer to the filled-in UniProps, or NULL if something went wrong.
 129      * The returned UniProps are usable until the next line of the same type is read.
 130      */
 131     const UniProps *getProps(UnicodeSet &newValues, UErrorCode &errorCode);
 132
 133     /**
 134      * Returns the code point range for the current algnamesrange line.
 135      * Calls & parses nextField().
 136      * Further nextField() calls will yield the range's type & prefix string.
 137      * Returns U_SUCCESS(errorCode).
 138      */
 139     UBool getRangeForAlgNames(UChar32 &start, UChar32 &end, UErrorCode &errorCode);
 140
 141 private:
 142     UBool isLineBufferAvailable(int32_t i) {
 143         return defaultLineIndex!=i && blockLineIndex!=i;
 144     }
 145
 146     /** Resets the field iterator and returns the line's first field (the line type field). */
 147     const char *firstField();
 148
 149     UBool parseProperty(UniProps &props, const char *field, UnicodeSet &newValues,
 150                         UErrorCode &errorCode);
 151     UChar32 parseCodePoint(const char *s, UErrorCode &errorCode);
 152     UBool parseCodePointRange(const char *s, UChar32 &start, UChar32 &end, UErrorCode &errorCode);
 153     void parseString(const char *s, UnicodeString &uni, UErrorCode &errorCode);
 154     void parseScriptExtensions(const char *s, UnicodeSet &scx, UErrorCode &errorCode);
 155
 156     static const int32_t kNumLineBuffers=3;
 157
 158     PropertyNames *icuPnames;  // owned
 159     const PropertyNames *pnames;  // aliased
 160     FILE *file;
 161     int32_t defaultLineIndex, blockLineIndex, lineIndex;
 162     int32_t lineNumber;
 163     LineType lineType;
 164     char *fieldLimit;
 165     char *lineLimit;
 166
 167     UVersionInfo ucdVersion;
 168     UniProps defaultProps, blockProps, cpProps;
 169     // Multiple lines so that default and block properties can maintain pointers
 170     // into their line buffers.
 171     char lines[kNumLineBuffers][4096];
 172 };
 173
 174 U_NAMESPACE_END
 175
 176 #endif  // __PPUCD_H__