575 lines
18 KiB
C++
575 lines
18 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 2011-2014, International Business Machines
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* Corporation and others. All Rights Reserved.
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*******************************************************************************
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* file name: ppucd.cpp
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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: 2011dec11
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* created by: Markus W. Scherer
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*/
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#include "unicode/utypes.h"
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#include "unicode/uchar.h"
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#include "charstr.h"
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#include "cstring.h"
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#include "ppucd.h"
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#include "uassert.h"
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#include "uparse.h"
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#include <stdio.h>
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#include <string.h>
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U_NAMESPACE_BEGIN
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PropertyNames::~PropertyNames() {}
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int32_t
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PropertyNames::getPropertyEnum(const char *name) const {
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return u_getPropertyEnum(name);
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}
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int32_t
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PropertyNames::getPropertyValueEnum(int32_t property, const char *name) const {
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return u_getPropertyValueEnum((UProperty)property, name);
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}
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UniProps::UniProps()
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: start(U_SENTINEL), end(U_SENTINEL),
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bmg(U_SENTINEL), bpb(U_SENTINEL),
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scf(U_SENTINEL), slc(U_SENTINEL), stc(U_SENTINEL), suc(U_SENTINEL),
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digitValue(-1), numericValue(NULL),
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name(NULL), nameAlias(NULL) {
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memset(binProps, 0, sizeof(binProps));
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memset(intProps, 0, sizeof(intProps));
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memset(age, 0, 4);
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}
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UniProps::~UniProps() {}
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const int32_t PreparsedUCD::kNumLineBuffers;
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PreparsedUCD::PreparsedUCD(const char *filename, UErrorCode &errorCode)
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: icuPnames(new PropertyNames()), pnames(icuPnames),
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file(NULL),
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defaultLineIndex(-1), blockLineIndex(-1), lineIndex(0),
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lineNumber(0),
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lineType(NO_LINE),
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fieldLimit(NULL), lineLimit(NULL) {
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if(U_FAILURE(errorCode)) { return; }
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if(filename==NULL || *filename==0 || (*filename=='-' && filename[1]==0)) {
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filename=NULL;
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file=stdin;
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} else {
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file=fopen(filename, "r");
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}
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if(file==NULL) {
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perror("error opening preparsed UCD");
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fprintf(stderr, "error opening preparsed UCD file %s\n", filename ? filename : "\"no file name given\"");
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errorCode=U_FILE_ACCESS_ERROR;
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return;
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}
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memset(ucdVersion, 0, 4);
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lines[0][0]=0;
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}
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PreparsedUCD::~PreparsedUCD() {
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if(file!=stdin) {
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fclose(file);
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}
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delete icuPnames;
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}
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// Same order as the LineType values.
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static const char *lineTypeStrings[]={
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NULL,
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NULL,
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"ucd",
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"property",
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"binary",
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"value",
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"defaults",
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"block",
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"cp",
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"algnamesrange"
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};
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PreparsedUCD::LineType
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PreparsedUCD::readLine(UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) { return NO_LINE; }
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// Select the next available line buffer.
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while(!isLineBufferAvailable(lineIndex)) {
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++lineIndex;
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if (lineIndex == kNumLineBuffers) {
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lineIndex = 0;
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}
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}
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char *line=lines[lineIndex];
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*line=0;
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lineLimit=fieldLimit=line;
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lineType=NO_LINE;
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char *result=fgets(line, sizeof(lines[0]), file);
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if(result==NULL) {
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if(ferror(file)) {
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perror("error reading preparsed UCD");
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fprintf(stderr, "error reading preparsed UCD before line %ld\n", (long)lineNumber);
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errorCode=U_FILE_ACCESS_ERROR;
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}
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return NO_LINE;
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}
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++lineNumber;
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if(*line=='#') {
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fieldLimit=strchr(line, 0);
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return lineType=EMPTY_LINE;
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}
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// Remove trailing /r/n.
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char c;
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char *limit=strchr(line, 0);
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while(line<limit && ((c=*(limit-1))=='\n' || c=='\r')) { --limit; }
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// Remove trailing white space.
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while(line<limit && ((c=*(limit-1))==' ' || c=='\t')) { --limit; }
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*limit=0;
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lineLimit=limit;
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if(line==limit) {
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fieldLimit=limit;
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return lineType=EMPTY_LINE;
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}
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// Split by ';'.
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char *semi=line;
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while((semi=strchr(semi, ';'))!=NULL) { *semi++=0; }
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fieldLimit=strchr(line, 0);
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// Determine the line type.
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int32_t type;
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for(type=EMPTY_LINE+1;; ++type) {
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if(type==LINE_TYPE_COUNT) {
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fprintf(stderr,
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"error in preparsed UCD: unknown line type (first field) '%s' on line %ld\n",
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line, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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return NO_LINE;
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}
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if(0==strcmp(line, lineTypeStrings[type])) {
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break;
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}
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}
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lineType=(LineType)type;
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if(lineType==UNICODE_VERSION_LINE && fieldLimit<lineLimit) {
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u_versionFromString(ucdVersion, fieldLimit+1);
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}
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return lineType;
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}
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const char *
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PreparsedUCD::firstField() {
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char *field=lines[lineIndex];
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fieldLimit=strchr(field, 0);
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return field;
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}
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const char *
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PreparsedUCD::nextField() {
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if(fieldLimit==lineLimit) { return NULL; }
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char *field=fieldLimit+1;
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fieldLimit=strchr(field, 0);
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return field;
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}
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const UniProps *
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PreparsedUCD::getProps(UnicodeSet &newValues, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) { return NULL; }
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newValues.clear();
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if(!lineHasPropertyValues()) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return NULL;
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}
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firstField();
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const char *field=nextField();
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if(field==NULL) {
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// No range field after the type.
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fprintf(stderr,
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"error in preparsed UCD: missing default/block/cp range field "
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"(no second field) on line %ld\n",
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(long)lineNumber);
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errorCode=U_PARSE_ERROR;
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return NULL;
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}
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UChar32 start, end;
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if(!parseCodePointRange(field, start, end, errorCode)) { return NULL; }
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UniProps *props;
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switch(lineType) {
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case DEFAULTS_LINE:
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if(defaultLineIndex>=0) {
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fprintf(stderr,
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"error in preparsed UCD: second line with default properties on line %ld\n",
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(long)lineNumber);
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errorCode=U_PARSE_ERROR;
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return NULL;
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}
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if(start!=0 || end!=0x10ffff) {
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fprintf(stderr,
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"error in preparsed UCD: default range must be 0..10FFFF, not '%s' on line %ld\n",
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field, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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return NULL;
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}
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props=&defaultProps;
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defaultLineIndex=lineIndex;
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break;
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case BLOCK_LINE:
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blockProps=defaultProps; // Block inherits default properties.
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props=&blockProps;
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blockLineIndex=lineIndex;
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break;
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case CP_LINE:
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if(blockProps.start<=start && end<=blockProps.end) {
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// Code point range fully inside the last block inherits the block properties.
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cpProps=blockProps;
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} else if(start>blockProps.end || end<blockProps.start) {
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// Code point range fully outside the last block inherits the default properties.
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cpProps=defaultProps;
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} else {
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// Code point range partially overlapping with the last block is illegal.
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fprintf(stderr,
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"error in preparsed UCD: cp range %s on line %ld only "
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"partially overlaps with block range %04lX..%04lX\n",
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field, (long)lineNumber, (long)blockProps.start, (long)blockProps.end);
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errorCode=U_PARSE_ERROR;
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return NULL;
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}
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props=&cpProps;
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break;
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default:
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// Will not occur because of the range check above.
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return NULL;
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}
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props->start=start;
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props->end=end;
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while((field=nextField())!=NULL) {
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if(!parseProperty(*props, field, newValues, errorCode)) { return NULL; }
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}
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return props;
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}
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static const struct {
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const char *name;
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int32_t prop;
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} ppucdProperties[]={
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{ "Name_Alias", PPUCD_NAME_ALIAS },
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{ "Conditional_Case_Mappings", PPUCD_CONDITIONAL_CASE_MAPPINGS },
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{ "Turkic_Case_Folding", PPUCD_TURKIC_CASE_FOLDING }
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};
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// Returns TRUE for "ok to continue parsing fields".
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UBool
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PreparsedUCD::parseProperty(UniProps &props, const char *field, UnicodeSet &newValues,
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UErrorCode &errorCode) {
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CharString pBuffer;
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const char *p=field;
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const char *v=strchr(p, '=');
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int binaryValue;
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if(*p=='-') {
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if(v!=NULL) {
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fprintf(stderr,
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"error in preparsed UCD: mix of binary-property-no and "
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"enum-property syntax '%s' on line %ld\n",
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field, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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return FALSE;
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}
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binaryValue=0;
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++p;
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} else if(v==NULL) {
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binaryValue=1;
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} else {
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binaryValue=-1;
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// Copy out the property name rather than modifying the field (writing a NUL).
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pBuffer.append(p, (int32_t)(v-p), errorCode);
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p=pBuffer.data();
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++v;
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}
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int32_t prop=pnames->getPropertyEnum(p);
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if(prop<0) {
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for(int32_t i=0;; ++i) {
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if(i==UPRV_LENGTHOF(ppucdProperties)) {
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// Ignore unknown property names.
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return TRUE;
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}
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if(0==uprv_stricmp(p, ppucdProperties[i].name)) {
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prop=ppucdProperties[i].prop;
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U_ASSERT(prop>=0);
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break;
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}
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}
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}
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if(prop<UCHAR_BINARY_LIMIT) {
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if(binaryValue>=0) {
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props.binProps[prop]=(UBool)binaryValue;
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} else {
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// No binary value for a binary property.
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fprintf(stderr,
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"error in preparsed UCD: enum-property syntax '%s' "
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"for binary property on line %ld\n",
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field, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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}
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} else if(binaryValue>=0) {
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// Binary value for a non-binary property.
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fprintf(stderr,
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"error in preparsed UCD: binary-property syntax '%s' "
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"for non-binary property on line %ld\n",
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field, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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} else if (prop < UCHAR_INT_START) {
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fprintf(stderr,
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"error in preparsed UCD: prop value is invalid: '%d' for line %ld\n",
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prop, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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} else if(prop<UCHAR_INT_LIMIT) {
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int32_t value=pnames->getPropertyValueEnum(prop, v);
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if(value==UCHAR_INVALID_CODE && prop==UCHAR_CANONICAL_COMBINING_CLASS) {
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// TODO: Make getPropertyValueEnum(UCHAR_CANONICAL_COMBINING_CLASS, v) work.
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char *end;
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unsigned long ccc=uprv_strtoul(v, &end, 10);
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if(v<end && *end==0 && ccc<=254) {
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value=(int32_t)ccc;
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}
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}
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if(value==UCHAR_INVALID_CODE) {
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fprintf(stderr,
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"error in preparsed UCD: '%s' is not a valid value on line %ld\n",
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field, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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} else {
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props.intProps[prop-UCHAR_INT_START]=value;
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}
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} else if(*v=='<') {
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// Do not parse default values like <code point>, just set null values.
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switch(prop) {
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case UCHAR_BIDI_MIRRORING_GLYPH:
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props.bmg=U_SENTINEL;
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break;
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case UCHAR_BIDI_PAIRED_BRACKET:
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props.bpb=U_SENTINEL;
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break;
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case UCHAR_SIMPLE_CASE_FOLDING:
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props.scf=U_SENTINEL;
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break;
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case UCHAR_SIMPLE_LOWERCASE_MAPPING:
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props.slc=U_SENTINEL;
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break;
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case UCHAR_SIMPLE_TITLECASE_MAPPING:
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props.stc=U_SENTINEL;
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break;
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case UCHAR_SIMPLE_UPPERCASE_MAPPING:
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props.suc=U_SENTINEL;
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break;
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case UCHAR_CASE_FOLDING:
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props.cf.remove();
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break;
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case UCHAR_LOWERCASE_MAPPING:
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props.lc.remove();
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break;
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case UCHAR_TITLECASE_MAPPING:
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props.tc.remove();
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break;
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case UCHAR_UPPERCASE_MAPPING:
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props.uc.remove();
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break;
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case UCHAR_SCRIPT_EXTENSIONS:
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props.scx.clear();
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break;
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default:
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fprintf(stderr,
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"error in preparsed UCD: '%s' is not a valid default value on line %ld\n",
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field, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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}
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} else {
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char c;
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switch(prop) {
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case UCHAR_NUMERIC_VALUE:
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props.numericValue=v;
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c=*v;
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if('0'<=c && c<='9' && v[1]==0) {
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props.digitValue=c-'0';
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} else {
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props.digitValue=-1;
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}
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break;
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case UCHAR_NAME:
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props.name=v;
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break;
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case UCHAR_AGE:
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u_versionFromString(props.age, v); // Writes 0.0.0.0 if v is not numeric.
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break;
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case UCHAR_BIDI_MIRRORING_GLYPH:
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props.bmg=parseCodePoint(v, errorCode);
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break;
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case UCHAR_BIDI_PAIRED_BRACKET:
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props.bpb=parseCodePoint(v, errorCode);
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break;
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case UCHAR_SIMPLE_CASE_FOLDING:
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props.scf=parseCodePoint(v, errorCode);
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break;
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case UCHAR_SIMPLE_LOWERCASE_MAPPING:
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props.slc=parseCodePoint(v, errorCode);
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break;
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case UCHAR_SIMPLE_TITLECASE_MAPPING:
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props.stc=parseCodePoint(v, errorCode);
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break;
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case UCHAR_SIMPLE_UPPERCASE_MAPPING:
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props.suc=parseCodePoint(v, errorCode);
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break;
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case UCHAR_CASE_FOLDING:
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parseString(v, props.cf, errorCode);
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break;
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case UCHAR_LOWERCASE_MAPPING:
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parseString(v, props.lc, errorCode);
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break;
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case UCHAR_TITLECASE_MAPPING:
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parseString(v, props.tc, errorCode);
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break;
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case UCHAR_UPPERCASE_MAPPING:
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parseString(v, props.uc, errorCode);
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break;
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case PPUCD_NAME_ALIAS:
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props.nameAlias=v;
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break;
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case PPUCD_CONDITIONAL_CASE_MAPPINGS:
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case PPUCD_TURKIC_CASE_FOLDING:
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// No need to parse their values: They are hardcoded in the runtime library.
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break;
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case UCHAR_SCRIPT_EXTENSIONS:
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parseScriptExtensions(v, props.scx, errorCode);
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break;
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default:
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// Ignore unhandled properties.
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return TRUE;
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}
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}
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if(U_SUCCESS(errorCode)) {
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newValues.add((UChar32)prop);
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return TRUE;
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} else {
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return FALSE;
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}
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}
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UBool
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PreparsedUCD::getRangeForAlgNames(UChar32 &start, UChar32 &end, UErrorCode &errorCode) {
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if(U_FAILURE(errorCode)) { return FALSE; }
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if(lineType!=ALG_NAMES_RANGE_LINE) {
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errorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return FALSE;
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}
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firstField();
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const char *field=nextField();
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if(field==NULL) {
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// No range field after the type.
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fprintf(stderr,
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"error in preparsed UCD: missing algnamesrange range field "
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"(no second field) on line %ld\n",
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(long)lineNumber);
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errorCode=U_PARSE_ERROR;
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return FALSE;
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}
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return parseCodePointRange(field, start, end, errorCode);
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}
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UChar32
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PreparsedUCD::parseCodePoint(const char *s, UErrorCode &errorCode) {
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char *end;
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uint32_t value=(uint32_t)uprv_strtoul(s, &end, 16);
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if(end<=s || *end!=0 || value>=0x110000) {
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fprintf(stderr,
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"error in preparsed UCD: '%s' is not a valid code point on line %ld\n",
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s, (long)lineNumber);
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errorCode=U_PARSE_ERROR;
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return U_SENTINEL;
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}
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return (UChar32)value;
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}
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UBool
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PreparsedUCD::parseCodePointRange(const char *s, UChar32 &start, UChar32 &end, UErrorCode &errorCode) {
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uint32_t st, e;
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u_parseCodePointRange(s, &st, &e, &errorCode);
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if(U_FAILURE(errorCode)) {
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fprintf(stderr,
|
|
"error in preparsed UCD: '%s' is not a valid code point range on line %ld\n",
|
|
s, (long)lineNumber);
|
|
return FALSE;
|
|
}
|
|
start=(UChar32)st;
|
|
end=(UChar32)e;
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
PreparsedUCD::parseString(const char *s, UnicodeString &uni, UErrorCode &errorCode) {
|
|
UChar *buffer=uni.getBuffer(-1);
|
|
int32_t length=u_parseString(s, buffer, uni.getCapacity(), NULL, &errorCode);
|
|
if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
|
|
errorCode=U_ZERO_ERROR;
|
|
uni.releaseBuffer(0);
|
|
buffer=uni.getBuffer(length);
|
|
length=u_parseString(s, buffer, uni.getCapacity(), NULL, &errorCode);
|
|
}
|
|
uni.releaseBuffer(length);
|
|
if(U_FAILURE(errorCode)) {
|
|
fprintf(stderr,
|
|
"error in preparsed UCD: '%s' is not a valid Unicode string on line %ld\n",
|
|
s, (long)lineNumber);
|
|
}
|
|
}
|
|
|
|
void
|
|
PreparsedUCD::parseScriptExtensions(const char *s, UnicodeSet &scx, UErrorCode &errorCode) {
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
scx.clear();
|
|
CharString scString;
|
|
for(;;) {
|
|
const char *scs;
|
|
const char *scLimit=strchr(s, ' ');
|
|
if(scLimit!=NULL) {
|
|
scs=scString.clear().append(s, (int32_t)(scLimit-s), errorCode).data();
|
|
if(U_FAILURE(errorCode)) { return; }
|
|
} else {
|
|
scs=s;
|
|
}
|
|
int32_t script=pnames->getPropertyValueEnum(UCHAR_SCRIPT, scs);
|
|
if(script==UCHAR_INVALID_CODE) {
|
|
fprintf(stderr,
|
|
"error in preparsed UCD: '%s' is not a valid script code on line %ld\n",
|
|
scs, (long)lineNumber);
|
|
errorCode=U_PARSE_ERROR;
|
|
return;
|
|
} else if(scx.contains(script)) {
|
|
fprintf(stderr,
|
|
"error in preparsed UCD: scx has duplicate '%s' codes on line %ld\n",
|
|
scs, (long)lineNumber);
|
|
errorCode=U_PARSE_ERROR;
|
|
return;
|
|
} else {
|
|
scx.add(script);
|
|
}
|
|
if(scLimit!=NULL) {
|
|
s=scLimit+1;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if(scx.isEmpty()) {
|
|
fprintf(stderr, "error in preparsed UCD: empty scx= on line %ld\n", (long)lineNumber);
|
|
errorCode=U_PARSE_ERROR;
|
|
}
|
|
}
|
|
|
|
U_NAMESPACE_END
|