/*
*******************************************************************************
* Copyright (C) 2011-2013, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* file name: ppucd.cpp
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2011dec11
* created by: Markus W. Scherer
*/
#include "unicode/utypes.h"
#include "unicode/uchar.h"
#include "charstr.h"
#include "cstring.h"
#include "ppucd.h"
#include "uassert.h"
#include "uparse.h"
#include <stdio.h>
#include <string.h>
#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
U_NAMESPACE_BEGIN
PropertyNames::~PropertyNames() {}
int32_t
PropertyNames::getPropertyEnum(const char *name) const {
return u_getPropertyEnum(name);
}
int32_t
PropertyNames::getPropertyValueEnum(int32_t property, const char *name) const {
return u_getPropertyValueEnum((UProperty)property, name);
}
UniProps::UniProps()
: start(U_SENTINEL), end(U_SENTINEL),
bmg(U_SENTINEL), bpb(U_SENTINEL),
scf(U_SENTINEL), slc(U_SENTINEL), stc(U_SENTINEL), suc(U_SENTINEL),
digitValue(-1), numericValue(NULL),
name(NULL), nameAlias(NULL) {
memset(binProps, 0, sizeof(binProps));
memset(intProps, 0, sizeof(intProps));
memset(age, 0, 4);
}
UniProps::~UniProps() {}
const int32_t PreparsedUCD::kNumLineBuffers;
PreparsedUCD::PreparsedUCD(const char *filename, UErrorCode &errorCode)
: icuPnames(new PropertyNames()), pnames(icuPnames),
file(NULL),
defaultLineIndex(-1), blockLineIndex(-1), lineIndex(0),
lineNumber(0),
lineType(NO_LINE),
fieldLimit(NULL), lineLimit(NULL) {
if(U_FAILURE(errorCode)) { return; }
if(filename==NULL || *filename==0 || (*filename=='-' && filename[1]==0)) {
filename=NULL;
file=stdin;
} else {
file=fopen(filename, "r");
}
if(file==NULL) {
perror("error opening preparsed UCD");
fprintf(stderr, "error opening preparsed UCD file %s\n", filename ? filename : "\"no file name given\"");
errorCode=U_FILE_ACCESS_ERROR;
return;
}
memset(ucdVersion, 0, 4);
lines[0][0]=0;
}
PreparsedUCD::~PreparsedUCD() {
if(file!=stdin) {
fclose(file);
}
delete icuPnames;
}
// Same order as the LineType values.
static const char *lineTypeStrings[]={
NULL,
NULL,
"ucd",
"property",
"binary",
"value",
"defaults",
"block",
"cp",
"algnamesrange"
};
PreparsedUCD::LineType
PreparsedUCD::readLine(UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return NO_LINE; }
// Select the next available line buffer.
while(!isLineBufferAvailable(lineIndex)) {
++lineIndex;
if (lineIndex == kNumLineBuffers) {
lineIndex = 0;
}
}
char *line=lines[lineIndex];
*line=0;
lineLimit=fieldLimit=line;
lineType=NO_LINE;
char *result=fgets(line, sizeof(lines[0]), file);
if(result==NULL) {
if(ferror(file)) {
perror("error reading preparsed UCD");
fprintf(stderr, "error reading preparsed UCD before line %ld\n", (long)lineNumber);
errorCode=U_FILE_ACCESS_ERROR;
}
return NO_LINE;
}
++lineNumber;
if(*line=='#') {
fieldLimit=strchr(line, 0);
return lineType=EMPTY_LINE;
}
// Remove trailing /r/n.
char c;
char *limit=strchr(line, 0);
while(line<limit && ((c=*(limit-1))=='\n' || c=='\r')) { --limit; }
// Remove trailing white space.
while(line<limit && ((c=*(limit-1))==' ' || c=='\t')) { --limit; }
*limit=0;
lineLimit=limit;
if(line==limit) {
fieldLimit=limit;
return lineType=EMPTY_LINE;
}
// Split by ';'.
char *semi=line;
while((semi=strchr(semi, ';'))!=NULL) { *semi++=0; }
fieldLimit=strchr(line, 0);
// Determine the line type.
int32_t type;
for(type=EMPTY_LINE+1;; ++type) {
if(type==LINE_TYPE_COUNT) {
fprintf(stderr,
"error in preparsed UCD: unknown line type (first field) '%s' on line %ld\n",
line, (long)lineNumber);
errorCode=U_PARSE_ERROR;
return NO_LINE;
}
if(0==strcmp(line, lineTypeStrings[type])) {
break;
}
}
lineType=(LineType)type;
if(lineType==UNICODE_VERSION_LINE && fieldLimit<lineLimit) {
u_versionFromString(ucdVersion, fieldLimit+1);
}
return lineType;
}
const char *
PreparsedUCD::firstField() {
char *field=lines[lineIndex];
fieldLimit=strchr(field, 0);
return field;
}
const char *
PreparsedUCD::nextField() {
if(fieldLimit==lineLimit) { return NULL; }
char *field=fieldLimit+1;
fieldLimit=strchr(field, 0);
return field;
}
const UniProps *
PreparsedUCD::getProps(UnicodeSet &newValues, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return NULL; }
newValues.clear();
if(!lineHasPropertyValues()) {
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
return NULL;
}
firstField();
const char *field=nextField();
if(field==NULL) {
// No range field after the type.
fprintf(stderr,
"error in preparsed UCD: missing default/block/cp range field "
"(no second field) on line %ld\n",
(long)lineNumber);
errorCode=U_PARSE_ERROR;
return NULL;
}
UChar32 start, end;
if(!parseCodePointRange(field, start, end, errorCode)) { return NULL; }
UniProps *props;
switch(lineType) {
case DEFAULTS_LINE:
if(defaultLineIndex>=0) {
fprintf(stderr,
"error in preparsed UCD: second line with default properties on line %ld\n",
(long)lineNumber);
errorCode=U_PARSE_ERROR;
return NULL;
}
if(start!=0 || end!=0x10ffff) {
fprintf(stderr,
"error in preparsed UCD: default range must be 0..10FFFF, not '%s' on line %ld\n",
field, (long)lineNumber);
errorCode=U_PARSE_ERROR;
return NULL;
}
props=&defaultProps;
defaultLineIndex=lineIndex;
break;
case BLOCK_LINE:
blockProps=defaultProps; // Block inherits default properties.
props=&blockProps;
blockLineIndex=lineIndex;
break;
case CP_LINE:
if(blockProps.start<=start && end<=blockProps.end) {
// Code point range fully inside the last block inherits the block properties.
cpProps=blockProps;
} else if(start>blockProps.end || end<blockProps.start) {
// Code point range fully outside the last block inherits the default properties.
cpProps=defaultProps;
} else {
// Code point range partially overlapping with the last block is illegal.
fprintf(stderr,
"error in preparsed UCD: cp range %s on line %ld only "
"partially overlaps with block range %04lX..%04lX\n",
field, (long)lineNumber, (long)blockProps.start, (long)blockProps.end);
errorCode=U_PARSE_ERROR;
return NULL;
}
props=&cpProps;
break;
default:
// Will not occur because of the range check above.
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
return NULL;
}
props->start=start;
props->end=end;
while((field=nextField())!=NULL) {
if(!parseProperty(*props, field, newValues, errorCode)) { return NULL; }
}
return props;
}
static const struct {
const char *name;
int32_t prop;
} ppucdProperties[]={
{ "Name_Alias", PPUCD_NAME_ALIAS },
{ "Conditional_Case_Mappings", PPUCD_CONDITIONAL_CASE_MAPPINGS },
{ "Turkic_Case_Folding", PPUCD_TURKIC_CASE_FOLDING }
};
// Returns TRUE for "ok to continue parsing fields".
UBool
PreparsedUCD::parseProperty(UniProps &props, const char *field, UnicodeSet &newValues,
UErrorCode &errorCode) {
CharString pBuffer;
const char *p=field;
const char *v=strchr(p, '=');
int binaryValue;
if(*p=='-') {
if(v!=NULL) {
fprintf(stderr,
"error in preparsed UCD: mix of binary-property-no and "
"enum-property syntax '%s' on line %ld\n",
field, (long)lineNumber);
errorCode=U_PARSE_ERROR;
return FALSE;
}
binaryValue=0;
++p;
} else if(v==NULL) {
binaryValue=1;
} else {
binaryValue=-1;
// Copy out the property name rather than modifying the field (writing a NUL).
pBuffer.append(p, (int32_t)(v-p), errorCode);
p=pBuffer.data();
++v;
}
int32_t prop=pnames->getPropertyEnum(p);
if(prop<0) {
for(int32_t i=0;; ++i) {
if(i==LENGTHOF(ppucdProperties)) {
// Ignore unknown property names.
return TRUE;
}
if(0==uprv_stricmp(p, ppucdProperties[i].name)) {
prop=ppucdProperties[i].prop;
U_ASSERT(prop>=0);
break;
}
}
}
if(prop<UCHAR_BINARY_LIMIT) {
if(binaryValue>=0) {
props.binProps[prop]=(UBool)binaryValue;
} else {
// No binary value for a binary property.
fprintf(stderr,
"error in preparsed UCD: enum-property syntax '%s' "
"for binary property on line %ld\n",
field, (long)lineNumber);
errorCode=U_PARSE_ERROR;
}
} else if(binaryValue>=0) {
// Binary value for a non-binary property.
fprintf(stderr,
"error in preparsed UCD: binary-property syntax '%s' "
"for non-binary property on line %ld\n",
field, (long)lineNumber);
errorCode=U_PARSE_ERROR;
} else if (prop < UCHAR_INT_START) {
fprintf(stderr,
"error in preparsed UCD: prop value is invalid: '%d' for line %ld\n",
prop, (long)lineNumber);
errorCode=U_PARSE_ERROR;
} else if(prop<UCHAR_INT_LIMIT) {
int32_t value=pnames->getPropertyValueEnum(prop, v);
if(value==UCHAR_INVALID_CODE && prop==UCHAR_CANONICAL_COMBINING_CLASS) {
// TODO: Make getPropertyValueEnum(UCHAR_CANONICAL_COMBINING_CLASS, v) work.
char *end;
unsigned long ccc=uprv_strtoul(v, &end, 10);
if(v<end && *end==0 && ccc<=254) {
value=(int32_t)ccc;
}
}
if(value==UCHAR_INVALID_CODE) {
fprintf(stderr,
"error in preparsed UCD: '%s' is not a valid value on line %ld\n",
field, (long)lineNumber);
errorCode=U_PARSE_ERROR;
} else {
props.intProps[prop-UCHAR_INT_START]=value;
}
} else if(*v=='<') {
// Do not parse default values like <code point>, just set null values.
switch(prop) {
case UCHAR_BIDI_MIRRORING_GLYPH:
props.bmg=U_SENTINEL;
break;
case UCHAR_BIDI_PAIRED_BRACKET:
props.bpb=U_SENTINEL;
break;
case UCHAR_SIMPLE_CASE_FOLDING:
props.scf=U_SENTINEL;
break;
case UCHAR_SIMPLE_LOWERCASE_MAPPING:
props.slc=U_SENTINEL;
break;
case UCHAR_SIMPLE_TITLECASE_MAPPING:
props.stc=U_SENTINEL;
break;
case UCHAR_SIMPLE_UPPERCASE_MAPPING:
props.suc=U_SENTINEL;
break;
case UCHAR_CASE_FOLDING:
props.cf.remove();
break;
case UCHAR_LOWERCASE_MAPPING:
props.lc.remove();
break;
case UCHAR_TITLECASE_MAPPING:
props.tc.remove();
break;
case UCHAR_UPPERCASE_MAPPING:
props.uc.remove();
break;
case UCHAR_SCRIPT_EXTENSIONS:
props.scx.clear();
break;
default:
fprintf(stderr,
"error in preparsed UCD: '%s' is not a valid default value on line %ld\n",
field, (long)lineNumber);
errorCode=U_PARSE_ERROR;
}
} else {
char c;
switch(prop) {
case UCHAR_NUMERIC_VALUE:
props.numericValue=v;
c=*v;
if('0'<=c && c<='9' && v[1]==0) {
props.digitValue=c-'0';
} else {
props.digitValue=-1;
}
break;
case UCHAR_NAME:
props.name=v;
break;
case UCHAR_AGE:
u_versionFromString(props.age, v); // Writes 0.0.0.0 if v is not numeric.
break;
case UCHAR_BIDI_MIRRORING_GLYPH:
props.bmg=parseCodePoint(v, errorCode);
break;
case UCHAR_BIDI_PAIRED_BRACKET:
props.bpb=parseCodePoint(v, errorCode);
break;
case UCHAR_SIMPLE_CASE_FOLDING:
props.scf=parseCodePoint(v, errorCode);
break;
case UCHAR_SIMPLE_LOWERCASE_MAPPING:
props.slc=parseCodePoint(v, errorCode);
break;
case UCHAR_SIMPLE_TITLECASE_MAPPING:
props.stc=parseCodePoint(v, errorCode);
break;
case UCHAR_SIMPLE_UPPERCASE_MAPPING:
props.suc=parseCodePoint(v, errorCode);
break;
case UCHAR_CASE_FOLDING:
parseString(v, props.cf, errorCode);
break;
case UCHAR_LOWERCASE_MAPPING:
parseString(v, props.lc, errorCode);
break;
case UCHAR_TITLECASE_MAPPING:
parseString(v, props.tc, errorCode);
break;
case UCHAR_UPPERCASE_MAPPING:
parseString(v, props.uc, errorCode);
break;
case PPUCD_NAME_ALIAS:
props.nameAlias=v;
break;
case PPUCD_CONDITIONAL_CASE_MAPPINGS:
case PPUCD_TURKIC_CASE_FOLDING:
// No need to parse their values: They are hardcoded in the runtime library.
break;
case UCHAR_SCRIPT_EXTENSIONS:
parseScriptExtensions(v, props.scx, errorCode);
break;
default:
// Ignore unhandled properties.
return TRUE;
}
}
if(U_SUCCESS(errorCode)) {
newValues.add((UChar32)prop);
return TRUE;
} else {
return FALSE;
}
}
UBool
PreparsedUCD::getRangeForAlgNames(UChar32 &start, UChar32 &end, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return FALSE; }
if(lineType!=ALG_NAMES_RANGE_LINE) {
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
return FALSE;
}
firstField();
const char *field=nextField();
if(field==NULL) {
// No range field after the type.
fprintf(stderr,
"error in preparsed UCD: missing algnamesrange range field "
"(no second field) on line %ld\n",
(long)lineNumber);
errorCode=U_PARSE_ERROR;
return FALSE;
}
return parseCodePointRange(field, start, end, errorCode);
}
UChar32
PreparsedUCD::parseCodePoint(const char *s, UErrorCode &errorCode) {
char *end;
uint32_t value=(uint32_t)uprv_strtoul(s, &end, 16);
if(end<=s || *end!=0 || value>=0x110000) {
fprintf(stderr,
"error in preparsed UCD: '%s' is not a valid code point on line %ld\n",
s, (long)lineNumber);
errorCode=U_PARSE_ERROR;
return U_SENTINEL;
}
return (UChar32)value;
}
UBool
PreparsedUCD::parseCodePointRange(const char *s, UChar32 &start, UChar32 &end, UErrorCode &errorCode) {
uint32_t st, e;
u_parseCodePointRange(s, &st, &e, &errorCode);
if(U_FAILURE(errorCode)) {
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