/* parse a mapping line; must not be empty */
U_CAPI UBool U_EXPORT2
ucm_parseMappingLine(UCMapping *m,
UChar32 codePoints[UCNV_EXT_MAX_UCHARS],
uint8_t bytes[UCNV_EXT_MAX_BYTES],
const char *line) {
const char *s;
char *end;
UChar32 cp;
int32_t u16Length;
int8_t uLen, bLen, f;
s=line;
uLen=bLen=0;
/* parse code points */
for(;;) {
/* skip an optional plus sign */
if(uLen>0 && *s=='+') {
++s;
}
if(*s!='<') {
break;
}
if( s[1]!='U' ||
(cp=(UChar32)uprv_strtoul(s+2, &end, 16), end)==s+2 ||
*end!='>'
) {
fprintf(stderr, "ucm error: Unicode code point must be formatted as <UXXXX> (1..6 hex digits) - \"%s\"\n", line);
return FALSE;
}
if((uint32_t)cp>0x10ffff || U_IS_SURROGATE(cp)) {
fprintf(stderr, "ucm error: Unicode code point must be 0..d7ff or e000..10ffff - \"%s\"\n", line);
return FALSE;
}
if(uLen==UCNV_EXT_MAX_UCHARS) {
fprintf(stderr, "ucm error: too many code points on \"%s\"\n", line);
return FALSE;
}
codePoints[uLen++]=cp;
s=end+1;
}
if(uLen==0) {
fprintf(stderr, "ucm error: no Unicode code points on \"%s\"\n", line);
return FALSE;
} else if(uLen==1) {
m->u=codePoints[0];
} else {
UErrorCode errorCode=U_ZERO_ERROR;
u_strFromUTF32(NULL, 0, &u16Length, codePoints, uLen, &errorCode);
if( (U_FAILURE(errorCode) && errorCode!=U_BUFFER_OVERFLOW_ERROR) ||
u16Length>UCNV_EXT_MAX_UCHARS
) {
fprintf(stderr, "ucm error: too many UChars on \"%s\"\n", line);
return FALSE;
}
}
s=u_skipWhitespace(s);
/* parse bytes */
bLen=ucm_parseBytes(bytes, line, &s);
if(bLen<0) {
return FALSE;
} else if(bLen==0) {
fprintf(stderr, "ucm error: no bytes on \"%s\"\n", line);
return FALSE;
} else if(bLen<=4) {
uprv_memcpy(m->b.bytes, bytes, bLen);
}
/* skip everything until the fallback indicator, even the start of a comment */
for(;;) {
if(*s==0) {
f=-1; /* no fallback indicator */
break;
} else if(*s=='|') {
f=(int8_t)(s[1]-'0');
if((uint8_t)f>4) {
fprintf(stderr, "ucm error: fallback indicator must be |0..|4 - \"%s\"\n", line);
return FALSE;
}
break;
}
++s;
}
m->uLen=uLen;
m->bLen=bLen;
m->f=f;
return TRUE;
}
static void
readHeader(ConvData *data,
FileStream* convFile,
const char* converterName,
UErrorCode *pErrorCode) {
char line[1024];
char *s, *key, *value;
const UConverterStaticData *prototype;
UConverterStaticData *staticData;
if(U_FAILURE(*pErrorCode)) {
return;
}
staticData=&data->staticData;
staticData->platform=UCNV_IBM;
staticData->subCharLen=0;
while(T_FileStream_readLine(convFile, line, sizeof(line))) {
/* basic parsing and handling of state-related items */
if(ucm_parseHeaderLine(data->ucm, line, &key, &value)) {
continue;
}
/* stop at the beginning of the mapping section */
if(uprv_strcmp(line, "CHARMAP")==0) {
break;
}
/* collect the information from the header field, ignore unknown keys */
if(uprv_strcmp(key, "code_set_name")==0) {
if(*value!=0) {
uprv_strcpy((char *)staticData->name, value);
getPlatformAndCCSIDFromName(value, &staticData->platform, &staticData->codepage);
}
} else if(uprv_strcmp(key, "subchar")==0) {
uint8_t bytes[UCNV_EXT_MAX_BYTES];
int8_t length;
s=value;
length=ucm_parseBytes(bytes, line, (const char **)&s);
if(1<=length && length<=4 && *s==0) {
staticData->subCharLen=length;
uprv_memcpy(staticData->subChar, bytes, length);
} else {
fprintf(stderr, "error: illegal <subchar> %s\n", value);
*pErrorCode=U_INVALID_TABLE_FORMAT;
return;
}
} else if(uprv_strcmp(key, "subchar1")==0) {
uint8_t bytes[UCNV_EXT_MAX_BYTES];
s=value;
if(1==ucm_parseBytes(bytes, line, (const char **)&s) && *s==0) {
staticData->subChar1=bytes[0];
} else {
fprintf(stderr, "error: illegal <subchar1> %s\n", value);
*pErrorCode=U_INVALID_TABLE_FORMAT;
return;
}
}
}
/* copy values from the UCMFile to the static data */
staticData->maxBytesPerChar=(int8_t)data->ucm->states.maxCharLength;
staticData->minBytesPerChar=(int8_t)data->ucm->states.minCharLength;
staticData->conversionType=data->ucm->states.conversionType;
if(staticData->conversionType==UCNV_UNSUPPORTED_CONVERTER) {
fprintf(stderr, "ucm error: missing conversion type (<uconv_class>)\n");
*pErrorCode=U_INVALID_TABLE_FORMAT;
return;
}
/*
* Now that we know the type, copy any 'default' values from the table.
* We need not check the type any further because the parser only
* recognizes what we have prototypes for.
*
* For delta (extension-only) tables, copy values from the base file
* instead, see createConverter().
*/
if(data->ucm->baseName[0]==0) {
prototype=ucnv_converterStaticData[staticData->conversionType];
if(prototype!=NULL) {
if(staticData->name[0]==0) {
uprv_strcpy((char *)staticData->name, prototype->name);
}
if(staticData->codepage==0) {
staticData->codepage=prototype->codepage;
}
if(staticData->platform==0) {
staticData->platform=prototype->platform;
}
if(staticData->minBytesPerChar==0) {
staticData->minBytesPerChar=prototype->minBytesPerChar;
}
if(staticData->maxBytesPerChar==0) {
staticData->maxBytesPerChar=prototype->maxBytesPerChar;
}
if(staticData->subCharLen==0) {
staticData->subCharLen=prototype->subCharLen;
if(prototype->subCharLen>0) {
uprv_memcpy(staticData->subChar, prototype->subChar, prototype->subCharLen);
}
}
}
}
if(data->ucm->states.outputType<0) {
data->ucm->states.outputType=(int8_t)data->ucm->states.maxCharLength-1;
}
if( staticData->subChar1!=0 &&
(staticData->minBytesPerChar>1 ||
(staticData->conversionType!=UCNV_MBCS &&
staticData->conversionType!=UCNV_EBCDIC_STATEFUL))
) {
fprintf(stderr, "error: <subchar1> defined for a type other than MBCS or EBCDIC_STATEFUL\n");
*pErrorCode=U_INVALID_TABLE_FORMAT;
}
}
