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scuffed-code/icu4c/source/tools/gencnval/gencnval.c
George Rhoten 648e3d7de3 ICU-3500 Fix some compiler warnings 
X-SVN-Rev: 15331
2004-05-17 06:33:22 +00:00

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/*
*******************************************************************************
*
* Copyright (C) 1999-2004, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: gencnval.c
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 1999nov05
* created by: Markus W. Scherer
*
* This program reads convrtrs.txt and writes a memory-mappable
* converter name alias table to cnvalias.dat .
*
* This program currently writes version 2.1 of the data format. See
* ucnv_io.c for more details on the format. Note that version 2.1
* is written in such a way that a 2.0 reader will be able to use it,
* and a 2.1 reader will be able to read 2.0.
*/
#include "unicode/utypes.h"
#include "unicode/putil.h"
#include "unicode/ucnv.h" /* ucnv_compareNames() */
#include "ucnv_io.h"
#include "cmemory.h"
#include "cstring.h"
#include "filestrm.h"
#include "unicode/uclean.h"
#include "unewdata.h"
#include "uoptions.h"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
/* TODO: Need to check alias name length is less than UCNV_MAX_CONVERTER_NAME_LENGTH */
/* STRING_STORE_SIZE + TAG_STORE_SIZE <= ((2^16 - 1) * 2)
That is the maximum size for the string stores combined
because the strings are index at 16-bit boundries by a
16-bit index, and there is only one section for the
strings.
*/
#define STRING_STORE_SIZE 0x1FBFE /* 130046 */
#define TAG_STORE_SIZE 0x400 /* 1024 */
/* The combined tag and converter count can affect the number of lists
created. The size of all lists must be less than (2^17 - 1)
because the lists are indexed as a 16-bit array with a 16-bit index.
*/
#define MAX_TAG_COUNT 0x3F /* 63 */
#define MAX_CONV_COUNT UCNV_CONVERTER_INDEX_MASK
#define MAX_ALIAS_COUNT 0xFFFF /* 65535 */
/* The maximum number of aliases that a standard tag/converter combination can have.
At this moment 6/18/2002, IANA has 12 names for ASCII. Don't go below 15 for
this value. I don't recommend more than 31 for this value.
*/
#define MAX_TC_ALIAS_COUNT 0x1F /* 31 */
#define MAX_LINE_SIZE 0x7FFF /* 32767 */
#define MAX_LIST_SIZE 0xFFFF /* 65535 */
#define DATA_NAME "cnvalias"
#define DATA_TYPE "icu" /* ICU alias table */
#define ALL_TAG_STR "ALL"
#define ALL_TAG_NUM 1
#define EMPTY_TAG_NUM 0
/* UDataInfo cf. udata.h */
static const UDataInfo dataInfo={
sizeof(UDataInfo),
0,
U_IS_BIG_ENDIAN,
U_CHARSET_FAMILY,
sizeof(UChar),
0,
{0x43, 0x76, 0x41, 0x6c}, /* dataFormat="CvAl" */
{3, 0, 0, 0}, /* formatVersion */
{1, 4, 2, 0} /* dataVersion */
};
typedef struct {
char *store;
uint32_t top;
uint32_t max;
} StringBlock;
static char stringStore[STRING_STORE_SIZE];
static StringBlock stringBlock = { stringStore, 0, STRING_STORE_SIZE };
typedef struct {
uint16_t aliasCount;
uint16_t *aliases; /* Index into stringStore */
} AliasList;
typedef struct {
uint16_t converter; /* Index into stringStore */
uint16_t totalAliasCount; /* Total aliases in this column */
} Converter;
static Converter converters[MAX_CONV_COUNT];
static uint16_t converterCount=0;
static char tagStore[TAG_STORE_SIZE];
static StringBlock tagBlock = { tagStore, 0, TAG_STORE_SIZE };
typedef struct {
uint16_t tag; /* Index into tagStore */
uint16_t totalAliasCount; /* Total aliases in this row */
AliasList aliasList[MAX_CONV_COUNT];
} Tag;
/* Think of this as a 3D array. It's tagCount by converterCount by aliasCount */
static Tag tags[MAX_TAG_COUNT];
static uint16_t tagCount = 0;
/* Used for storing all aliases */
static uint16_t knownAliases[MAX_ALIAS_COUNT];
static uint16_t knownAliasesCount = 0;
/*static uint16_t duplicateKnownAliasesCount = 0;*/
/* Used for storing the lists section that point to aliases */
static uint16_t aliasLists[MAX_LIST_SIZE];
static uint16_t aliasListsSize = 0;
/* Were the standard tags declared before the aliases. */
static UBool standardTagsUsed = FALSE;
static UBool verbose = FALSE;
static int lineNum = 1;
/* prototypes --------------------------------------------------------------- */
static void
parseLine(const char *line);
static void
parseFile(FileStream *in);
static int32_t
chomp(char *line);
static void
addOfficialTaggedStandards(char *line, int32_t lineLen);
static uint16_t
addAlias(const char *alias, uint16_t standard, uint16_t converter, UBool defaultName);
static uint16_t
addConverter(const char *converter);
static char *
allocString(StringBlock *block, const char *s, int32_t length);
static uint16_t
addToKnownAliases(const char *alias);
static int
compareAliases(const void *alias1, const void *alias2);
static uint16_t
getTagNumber(const char *tag, uint16_t tagLen);
/*static void
addTaggedAlias(uint16_t tag, const char *alias, uint16_t converter);*/
static void
writeAliasTable(UNewDataMemory *out);
/* -------------------------------------------------------------------------- */
/* Presumes that you used allocString() */
#define GET_ALIAS_STR(index) (stringStore + ((size_t)(index) << 1))
#define GET_TAG_STR(index) (tagStore + ((size_t)(index) << 1))
/* Presumes that you used allocString() */
#define GET_ALIAS_NUM(str) ((uint16_t)((str - stringStore) >> 1))
#define GET_TAG_NUM(str) ((uint16_t)((str - tagStore) >> 1))
enum
{
HELP1,
HELP2,
VERBOSE,
COPYRIGHT,
DESTDIR,
SOURCEDIR
};
static UOption options[]={
UOPTION_HELP_H,
UOPTION_HELP_QUESTION_MARK,
UOPTION_VERBOSE,
UOPTION_COPYRIGHT,
UOPTION_DESTDIR,
UOPTION_SOURCEDIR
};
extern int
main(int argc, char* argv[]) {
char pathBuf[512];
const char *path;
FileStream *in;
UNewDataMemory *out;
UErrorCode errorCode=U_ZERO_ERROR;
U_MAIN_INIT_ARGS(argc, argv);
/* preset then read command line options */
options[DESTDIR].value=options[SOURCEDIR].value=u_getDataDirectory();
argc=u_parseArgs(argc, argv, sizeof(options)/sizeof(options[0]), options);
/* error handling, printing usage message */
if(argc<0) {
fprintf(stderr,
"error in command line argument \"%s\"\n",
argv[-argc]);
}
if(argc<0 || options[HELP1].doesOccur || options[HELP2].doesOccur) {
fprintf(stderr,
"usage: %s [-options] [convrtrs.txt]\n"
"\tread convrtrs.txt and create " U_ICUDATA_NAME "_" DATA_NAME "." DATA_TYPE "\n"
"options:\n"
"\t-h or -? or --help this usage text\n"
"\t-v or --verbose prints out extra information about the alias table\n"
"\t-c or --copyright include a copyright notice\n"
"\t-d or --destdir destination directory, followed by the path\n"
"\t-s or --sourcedir source directory, followed by the path\n",
argv[0]);
return argc<0 ? U_ILLEGAL_ARGUMENT_ERROR : U_ZERO_ERROR;
}
if(options[VERBOSE].doesOccur) {
verbose = TRUE;
}
if(argc>=2) {
path=argv[1];
} else {
path=options[SOURCEDIR].value;
if(path!=NULL && *path!=0) {
char *end;
uprv_strcpy(pathBuf, path);
end = uprv_strchr(pathBuf, 0);
if(*(end-1)!=U_FILE_SEP_CHAR) {
*(end++)=U_FILE_SEP_CHAR;
}
uprv_strcpy(end, "convrtrs.txt");
path=pathBuf;
} else {
path = "convrtrs.txt";
}
}
uprv_memset(stringStore, 0, sizeof(stringStore));
uprv_memset(tagStore, 0, sizeof(tagStore));
uprv_memset(converters, 0, sizeof(converters));
uprv_memset(tags, 0, sizeof(tags));
uprv_memset(aliasLists, 0, sizeof(aliasLists));
uprv_memset(knownAliases, 0, sizeof(aliasLists));
in=T_FileStream_open(path, "r");
if(in==NULL) {
fprintf(stderr, "gencnval: unable to open input file convrtrs.txt\n");
exit(U_FILE_ACCESS_ERROR);
}
parseFile(in);
T_FileStream_close(in);
/* create the output file */
out=udata_create(options[DESTDIR].value, DATA_TYPE, DATA_NAME, &dataInfo,
options[COPYRIGHT].doesOccur ? U_COPYRIGHT_STRING : NULL, &errorCode);
if(U_FAILURE(errorCode)) {
fprintf(stderr, "gencnval: unable to open output file - error %s\n", u_errorName(errorCode));
exit(errorCode);
}
/* write the table of aliases based on a tag/converter name combination */
writeAliasTable(out);
/* finish */
udata_finish(out, &errorCode);
if(U_FAILURE(errorCode)) {
fprintf(stderr, "gencnval: error finishing output file - %s\n", u_errorName(errorCode));
exit(errorCode);
}
return 0;
}
static void
parseFile(FileStream *in) {
char line[MAX_LINE_SIZE];
char lastLine[MAX_LINE_SIZE];
int32_t lineSize = 0;
int32_t lastLineSize = 0;
UBool validParse = TRUE;
lineNum = 0;
/* Add the empty tag, which is for untagged aliases */
getTagNumber("", 0);
getTagNumber(ALL_TAG_STR, 3);
allocString(&stringBlock, "", 0);
/* read the list of aliases */
while (validParse) {
validParse = FALSE;
/* Read non-empty lines that don't start with a space character. */
while (T_FileStream_readLine(in, lastLine, MAX_LINE_SIZE) != NULL) {
lastLineSize = chomp(lastLine);
if (lineSize == 0 || (lastLineSize > 0 && isspace(*lastLine))) {
uprv_strcpy(line + lineSize, lastLine);
lineSize += lastLineSize;
} else if (lineSize > 0) {
validParse = TRUE;
break;
}
lineNum++;
}
if (validParse || lineSize > 0) {
if (isspace(*line)) {
fprintf(stderr, "error(line %d): cannot start an alias with a space\n", lineNum-1);
exit(U_PARSE_ERROR);
} else if (line[0] == '{') {
if (!standardTagsUsed && line[lineSize - 1] != '}') {
fprintf(stderr, "error(line %d): alias needs to start with a converter name\n", lineNum);
exit(U_PARSE_ERROR);
}
addOfficialTaggedStandards(line, lineSize);
standardTagsUsed = TRUE;
} else {
if (standardTagsUsed) {
parseLine(line);
}
else {
fprintf(stderr, "error(line %d): alias table needs to start a list of standard tags\n", lineNum);
exit(U_PARSE_ERROR);
}
}
/* Was the last line consumed */
if (lastLineSize > 0) {
uprv_strcpy(line, lastLine);
lineSize = lastLineSize;
}
else {
lineSize = 0;
}
}
lineNum++;
}
}
/* This works almost like the Perl chomp.
It removes the newlines, comments and trailing whitespace (not preceding whitespace).
*/
static int32_t
chomp(char *line) {
char *s = line;
char *lastNonSpace = line;
while(*s!=0) {
/* truncate at a newline or a comment */
if(*s == '\r' || *s == '\n' || *s == '#') {
*s = 0;
break;
}
if (!isspace(*s)) {
lastNonSpace = s;
}
++s;
}
if (lastNonSpace++ > line) {
*lastNonSpace = 0;
s = lastNonSpace;
}
return (int32_t)(s - line);
}
static void
parseLine(const char *line) {
uint16_t pos=0, start, limit, length, cnv;
char *converter, *alias;
/* skip leading white space */
/* There is no whitespace at the beginning anymore */
/* while(line[pos]!=0 && isspace(line[pos])) {
++pos;
}
*/
/* is there nothing on this line? */
if(line[pos]==0) {
return;
}
/* get the converter name */
start=pos;
while(line[pos]!=0 && !isspace(line[pos])) {
++pos;
}
limit=pos;
/* store the converter name */
length=(uint16_t)(limit-start);
converter=allocString(&stringBlock, line+start, length);
/* add the converter to the converter table */
cnv=addConverter(converter);
/* The name itself may be tagged, so let's added it to the aliases list properly */
pos = start;
/* get all the real aliases */
for(;;) {
/* skip white space */
while(line[pos]!=0 && isspace(line[pos])) {
++pos;
}
/* is there no more alias name on this line? */
if(line[pos]==0) {
break;
}
/* get an alias name */
start=pos;
while(line[pos]!=0 && line[pos]!='{' && !isspace(line[pos])) {
++pos;
}
limit=pos;
/* store the alias name */
length=(uint16_t)(limit-start);
if (start == 0) {
/* add the converter as its own alias to the alias table */
alias = converter;
addAlias(alias, ALL_TAG_NUM, cnv, TRUE);
}
else {
alias=allocString(&stringBlock, line+start, length);
addAlias(alias, ALL_TAG_NUM, cnv, FALSE);
}
addToKnownAliases(alias);
/* add the alias/converter pair to the alias table */
/* addAlias(alias, 0, cnv, FALSE);*/
/* skip whitespace */
while (line[pos] && isspace(line[pos])) {
++pos;
}
/* handle tags if they are present */
if (line[pos] == '{') {
++pos;
do {
start = pos;
while (line[pos] && line[pos] != '}' && !isspace( line[pos])) {
++pos;
}
limit = pos;
if (start != limit) {
/* add the tag to the tag table */
uint16_t tag = getTagNumber(line + start, (uint16_t)(limit - start));
addAlias(alias, tag, cnv, (UBool)(line[limit-1] == '*'));
}
while (line[pos] && isspace(line[pos])) {
++pos;
}
} while (line[pos] && line[pos] != '}');
if (line[pos] == '}') {
++pos;
} else {
fprintf(stderr, "error(line %d): Unterminated tag list\n", lineNum);
exit(U_UNMATCHED_BRACES);
}
} else {
addAlias(alias, EMPTY_TAG_NUM, cnv, (UBool)(tags[0].aliasList[cnv].aliasCount == 0));
}
}
}
static uint16_t
getTagNumber(const char *tag, uint16_t tagLen) {
char *atag;
uint16_t t;
UBool preferredName = ((tagLen > 0) ? (tag[tagLen - 1] == '*') : (FALSE));
if (tagCount >= MAX_TAG_COUNT) {
fprintf(stderr, "error(line %d): too many tags\n", lineNum);
exit(U_BUFFER_OVERFLOW_ERROR);
}
if (preferredName) {
/* puts(tag);*/
tagLen--;
}
for (t = 0; t < tagCount; ++t) {
const char *currTag = GET_TAG_STR(tags[t].tag);
if (uprv_strlen(currTag) == tagLen && !uprv_strnicmp(currTag, tag, tagLen)) {
return t;
}
}
/* we need to add this tag */
if (tagCount >= MAX_TAG_COUNT) {
fprintf(stderr, "error(line %d): too many tags\n", lineNum);
exit(U_BUFFER_OVERFLOW_ERROR);
}
/* allocate a new entry in the tag table */
atag = allocString(&tagBlock, tag, tagLen);
if (standardTagsUsed) {
fprintf(stderr, "error(line %d): Tag \"%s\" is not declared at the beginning of the alias table.\n",
lineNum, atag);
exit(1);
}
else if (tagLen > 0 && strcmp(tag, ALL_TAG_STR) != 0) {
fprintf(stderr, "warning(line %d): Tag \"%s\" was added to the list of standards because it was not declared at beginning of the alias table.\n",
lineNum, atag);
}
/* add the tag to the tag table */
tags[tagCount].tag = GET_TAG_NUM(atag);
/* The aliasList should be set to 0's already */
return tagCount++;
}
/*static void
addTaggedAlias(uint16_t tag, const char *alias, uint16_t converter) {
tags[tag].aliases[converter] = alias;
}
*/
static void
addOfficialTaggedStandards(char *line, int32_t lineLen) {
char *atag;
char *tag = strchr(line, '{') + 1;
static const char WHITESPACE[] = " \t";
if (tagCount > UCNV_NUM_RESERVED_TAGS) {
fprintf(stderr, "error(line %d): official tags already added\n", lineNum);
exit(U_BUFFER_OVERFLOW_ERROR);
}
strchr(tag, '}')[0] = 0;
tag = strtok(tag, WHITESPACE);
while (tag != NULL) {
/* printf("Adding original tag \"%s\"\n", tag);*/
/* allocate a new entry in the tag table */
atag = allocString(&tagBlock, tag, -1);
/* add the tag to the tag table */
tags[tagCount++].tag = (uint16_t)((atag - tagStore) >> 1);
/* The aliasList should already be set to 0's */
/* Get next tag */
tag = strtok(NULL, WHITESPACE);
}
}
static uint16_t
addToKnownAliases(const char *alias) {
/* uint32_t idx; */
/* strict matching */
/* for (idx = 0; idx < knownAliasesCount; idx++) {
uint16_t num = GET_ALIAS_NUM(alias);
if (knownAliases[idx] != num
&& uprv_strcmp(alias, GET_ALIAS_STR(knownAliases[idx])) == 0)
{
fprintf(stderr, "warning(line %d): duplicate alias %s and %s found\n",
lineNum, alias, GET_ALIAS_STR(knownAliases[idx]));
duplicateKnownAliasesCount++;
break;
}
else if (knownAliases[idx] != num
&& ucnv_compareNames(alias, GET_ALIAS_STR(knownAliases[idx])) == 0)
{
if (verbose) {
fprintf(stderr, "information(line %d): duplicate alias %s and %s found\n",
lineNum, alias, GET_ALIAS_STR(knownAliases[idx]));
}
duplicateKnownAliasesCount++;
break;
}
}
*/
if (knownAliasesCount >= MAX_ALIAS_COUNT) {
fprintf(stderr, "warning(line %d): Too many aliases defined for all converters\n",
lineNum);
exit(U_BUFFER_OVERFLOW_ERROR);
}
/* TODO: We could try to unlist exact duplicates. */
return knownAliases[knownAliasesCount++] = GET_ALIAS_NUM(alias);
}
/*
@param standard When standard is 0, then it's the "empty" tag.
*/
static uint16_t
addAlias(const char *alias, uint16_t standard, uint16_t converter, UBool defaultName) {
uint32_t idx, idx2;
UBool dupFound = FALSE;
UBool startEmptyWithoutDefault = FALSE;
AliasList *aliasList;
if(standard>=MAX_TAG_COUNT) {
fprintf(stderr, "error(line %d): too many standard tags\n", lineNum);
exit(U_BUFFER_OVERFLOW_ERROR);
}
if(converter>=MAX_CONV_COUNT) {
fprintf(stderr, "error(line %d): too many converter names\n", lineNum);
exit(U_BUFFER_OVERFLOW_ERROR);
}
aliasList = &tags[standard].aliasList[converter];
if (strchr(alias, '}')) {
fprintf(stderr, "error(line %d): unmatched } found\n",
lineNum);
}
if(aliasList->aliasCount + 1 >= MAX_TC_ALIAS_COUNT) {
fprintf(stderr, "error(line %d): too many aliases for alias %s and converter %s\n",
lineNum, alias, GET_ALIAS_STR(converters[converter].converter));
exit(U_BUFFER_OVERFLOW_ERROR);
}
/* Show this warning only once. All aliases are added to the "ALL" tag. */
if (standard == ALL_TAG_NUM && GET_ALIAS_STR(converters[converter].converter) != alias) {
/* Normally these option values are parsed at runtime, and they can
be discarded when the alias is a default converter. Options should
only be on a converter and not an alias. */
if (uprv_strchr(alias, UCNV_OPTION_SEP_CHAR) != 0)
{
fprintf(stderr, "warning(line %d): alias %s contains a \""UCNV_OPTION_SEP_STRING"\". Options are parsed at run-time and do not need to be in the alias table.\n",
lineNum, alias);
}
if (uprv_strchr(alias, UCNV_VALUE_SEP_CHAR) != 0)
{
fprintf(stderr, "warning(line %d): alias %s contains an \""UCNV_VALUE_SEP_STRING"\". Options are parsed at run-time and do not need to be in the alias table.\n",
lineNum, alias);
}
}
/* Check for duplicates in a tag/converter combination */
for (idx = 0; idx < aliasList->aliasCount; idx++) {
uint16_t aliasNum = tags[standard].aliasList[converter].aliases[idx];
if (aliasNum && ucnv_compareNames(alias, GET_ALIAS_STR(aliasNum)) == 0 && standard != ALL_TAG_NUM)
{
fprintf(stderr, "warning(line %d): duplicate alias %s and %s found for standard %s\n",
lineNum, alias, GET_ALIAS_STR(aliasNum), GET_TAG_STR(tags[standard].tag));
dupFound = TRUE;
break;
}
}
if (!dupFound && standard != ALL_TAG_NUM) {
/* Check for duplicate aliases for this tag on all converters */
for (idx = 0; idx < converterCount; idx++) {
for (idx2 = 0; idx2 < tags[standard].aliasList[idx].aliasCount; idx2++) {
uint16_t aliasNum = tags[standard].aliasList[idx].aliases[idx2];
if (aliasNum
&& ucnv_compareNames(alias, GET_ALIAS_STR(aliasNum)) == 0)
{
fprintf(stderr, "warning(line %d): duplicate alias %s found for standard tag %s between converter %s and converter %s\n",
lineNum, alias, GET_TAG_STR(tags[standard].tag), GET_ALIAS_STR(converters[converter].converter), GET_ALIAS_STR(converters[idx].converter));
dupFound = TRUE;
break;
}
}
}
/* Check for duplicate default aliases for this converter on all tags */
/* It's okay to have multiple standards prefer the same name */
/* if (verbose && !dupFound) {
for (idx = 0; idx < tagCount; idx++) {
if (tags[idx].aliasList[converter].aliases) {
uint16_t aliasNum = tags[idx].aliasList[converter].aliases[0];
if (aliasNum
&& ucnv_compareNames(alias, GET_ALIAS_STR(aliasNum)) == 0)
{
fprintf(stderr, "warning(line %d): duplicate alias %s found for converter %s and standard tag %s\n",
lineNum, alias, GET_ALIAS_STR(converters[converter].converter), GET_TAG_STR(tags[standard].tag));
break;
}
}
}
}*/
}
if (aliasList->aliasCount <= 0) {
aliasList->aliasCount++;
startEmptyWithoutDefault = TRUE;
}
aliasList->aliases = (uint16_t *)uprv_realloc(aliasList->aliases, (aliasList->aliasCount + 1) * sizeof(aliasList->aliases[0]));
if (startEmptyWithoutDefault) {
aliasList->aliases[0] = 0;
}
if (defaultName) {
if (aliasList->aliases[0] != 0) {
fprintf(stderr, "error(line %d): Alias %s and %s cannot both be the default alias for standard tag %s and converter %s\n",
lineNum,
alias,
GET_ALIAS_STR(aliasList->aliases[0]),
GET_TAG_STR(tags[standard].tag),
GET_ALIAS_STR(converters[converter].converter));
exit(U_PARSE_ERROR);
}
aliasList->aliases[0] = GET_ALIAS_NUM(alias);
} else {
aliasList->aliases[aliasList->aliasCount++] = GET_ALIAS_NUM(alias);
}
/* aliasList->converter = converter;*/
converters[converter].totalAliasCount++; /* One more to the column */
tags[standard].totalAliasCount++; /* One more to the row */
return aliasList->aliasCount;
}
static uint16_t
addConverter(const char *converter) {
uint32_t idx;
if(converterCount>=MAX_CONV_COUNT) {
fprintf(stderr, "error(line %d): too many converters\n", lineNum);
exit(U_BUFFER_OVERFLOW_ERROR);
}
for (idx = 0; idx < converterCount; idx++) {
if (ucnv_compareNames(converter, GET_ALIAS_STR(converters[idx].converter)) == 0) {
fprintf(stderr, "error(line %d): duplicate converter %s found!\n", lineNum, converter);
exit(U_PARSE_ERROR);
break;
}
}
converters[converterCount].converter = GET_ALIAS_NUM(converter);
converters[converterCount].totalAliasCount = 0;
return converterCount++;
}
/* resolve this alias based on the prioritization of the standard tags. */
static void
resolveAliasToConverter(uint16_t alias, uint16_t *tagNum, uint16_t *converterNum) {
uint16_t idx, idx2, idx3;
for (idx = UCNV_NUM_RESERVED_TAGS; idx < tagCount; idx++) {
for (idx2 = 0; idx2 < converterCount; idx2++) {
for (idx3 = 0; idx3 < tags[idx].aliasList[idx2].aliasCount; idx3++) {
uint16_t aliasNum = tags[idx].aliasList[idx2].aliases[idx3];
if (aliasNum == alias) {
*tagNum = idx;
*converterNum = idx2;
return;
}
}
}
}
/* Do the leftovers last, just in case */
/* There is no need to do the ALL tag */
idx = 0;
for (idx2 = 0; idx2 < converterCount; idx2++) {
for (idx3 = 0; idx3 < tags[idx].aliasList[idx2].aliasCount; idx3++) {
uint16_t aliasNum = tags[idx].aliasList[idx2].aliases[idx3];
if (aliasNum == alias) {
*tagNum = idx;
*converterNum = idx2;
return;
}
}
}
*tagNum = UINT16_MAX;
*converterNum = UINT16_MAX;
fprintf(stderr, "warning: alias %s not found\n",
GET_ALIAS_STR(alias));
return;
}
/* The knownAliases should be sorted before calling this function */
static uint32_t
resolveAliases(uint16_t *uniqueAliasArr, uint16_t *uniqueAliasToConverterArr, uint16_t aliasOffset) {
uint32_t uniqueAliasIdx = 0;
uint32_t idx;
uint16_t currTagNum, oldTagNum;
uint16_t currConvNum, oldConvNum;
const char *lastName;
resolveAliasToConverter(knownAliases[0], &oldTagNum, &currConvNum);
uniqueAliasToConverterArr[uniqueAliasIdx] = currConvNum;
oldConvNum = currConvNum;
uniqueAliasArr[uniqueAliasIdx] = knownAliases[0] + aliasOffset;
uniqueAliasIdx++;
lastName = GET_ALIAS_STR(knownAliases[0]);
for (idx = 1; idx < knownAliasesCount; idx++) {
resolveAliasToConverter(knownAliases[idx], &currTagNum, &currConvNum);
if (ucnv_compareNames(lastName, GET_ALIAS_STR(knownAliases[idx])) == 0) {
/* duplicate found */
if ((currTagNum < oldTagNum && currTagNum >= UCNV_NUM_RESERVED_TAGS)
|| oldTagNum == 0) {
oldTagNum = currTagNum;
uniqueAliasToConverterArr[uniqueAliasIdx - 1] = currConvNum;
uniqueAliasArr[uniqueAliasIdx - 1] = knownAliases[idx] + aliasOffset;
if (verbose) {
printf("using %s instead of %s -> %s",
GET_ALIAS_STR(knownAliases[idx]),
lastName,
GET_ALIAS_STR(converters[currConvNum].converter));
if (oldConvNum != currConvNum) {
printf(" (alias conflict)");
}
puts("");
}
}
else {
/* else ignore it */
if (verbose) {
printf("folding %s into %s -> %s",
GET_ALIAS_STR(knownAliases[idx]),
lastName,
GET_ALIAS_STR(converters[oldConvNum].converter));
if (oldConvNum != currConvNum) {
printf(" (alias conflict)");
}
puts("");
}
}
if (oldConvNum != currConvNum) {
uniqueAliasToConverterArr[uniqueAliasIdx - 1] |= UCNV_AMBIGUOUS_ALIAS_MAP_BIT;
}
}
else {
uniqueAliasToConverterArr[uniqueAliasIdx] = currConvNum;
oldConvNum = currConvNum;
uniqueAliasArr[uniqueAliasIdx] = knownAliases[idx] + aliasOffset;
uniqueAliasIdx++;
lastName = GET_ALIAS_STR(knownAliases[idx]);
oldTagNum = currTagNum;
/*printf("%s -> %s\n", GET_ALIAS_STR(knownAliases[idx]), GET_ALIAS_STR(converters[currConvNum].converter));*/
}
}
return uniqueAliasIdx;
}
static void
createOneAliasList(uint16_t *aliasArrLists, uint32_t tag, uint32_t converter, uint16_t offset) {
uint32_t aliasNum;
AliasList *aliasList = &tags[tag].aliasList[converter];
if (aliasList->aliasCount == 0) {
aliasArrLists[tag*converterCount + converter] = 0;
}
else {
aliasLists[aliasListsSize++] = aliasList->aliasCount;
/* write into the array area a 1's based index. */
aliasArrLists[tag*converterCount + converter] = aliasListsSize;
/* printf("tag %s converter %s\n",
GET_TAG_STR(tags[tag].tag),
GET_ALIAS_STR(converters[converter].converter));*/
for (aliasNum = 0; aliasNum < aliasList->aliasCount; aliasNum++) {
uint16_t value;
/* printf(" %s\n",
GET_ALIAS_STR(aliasList->aliases[aliasNum]));*/
if (aliasList->aliases[aliasNum]) {
value = aliasList->aliases[aliasNum] + offset;
} else {
value = 0;
if (tag != 0) { /* Only show the warning when it's not the leftover tag. */
printf("warning: tag %s does not have a default alias for %s\n",
GET_TAG_STR(tags[tag].tag),
GET_ALIAS_STR(converters[converter].converter));
}
}
aliasLists[aliasListsSize++] = value;
if (aliasListsSize >= MAX_LIST_SIZE) {
fprintf(stderr, "error: Too many alias lists\n");
exit(U_BUFFER_OVERFLOW_ERROR);
}
}
}
}
static void
writeAliasTable(UNewDataMemory *out) {
uint32_t i, j;
uint32_t uniqueAliasesSize;
uint16_t aliasOffset = (uint16_t)(tagBlock.top/sizeof(uint16_t));
uint16_t *aliasArrLists = (uint16_t *)uprv_malloc(tagCount * converterCount * sizeof(uint16_t));
uint16_t *uniqueAliases = (uint16_t *)uprv_malloc(knownAliasesCount * sizeof(uint16_t));
uint16_t *uniqueAliasesToConverter = (uint16_t *)uprv_malloc(knownAliasesCount * sizeof(uint16_t));
qsort(knownAliases, knownAliasesCount, sizeof(knownAliases[0]), compareAliases);
uniqueAliasesSize = resolveAliases(uniqueAliases, uniqueAliasesToConverter, aliasOffset);
/* Array index starts at 1. aliasLists[0] is the size of the lists section. */
aliasListsSize = 0;
/* write the offsets of all the aliases lists in a 2D array, and create the lists. */
for (i = 0; i < tagCount; ++i) {
for (j = 0; j < converterCount; ++j) {
createOneAliasList(aliasArrLists, i, j, aliasOffset);
}
}
/* Write the size of the TOC */
udata_write32(out, 8);
/* Write the sizes of each section */
/* All sizes are the number of uint16_t units, not bytes */
udata_write32(out, converterCount);
udata_write32(out, tagCount);
udata_write32(out, uniqueAliasesSize); /* list of aliases */
udata_write32(out, uniqueAliasesSize); /* The preresolved form of mapping an untagged the alias to a converter */
udata_write32(out, tagCount * converterCount);
udata_write32(out, aliasListsSize + 1);
udata_write32(out, 0); /* Reserved space. */
udata_write32(out, (tagBlock.top + stringBlock.top) / sizeof(uint16_t));
/* write the table of converters */
/* Think of this as the column headers */
for(i=0; i<converterCount; ++i) {
udata_write16(out, (uint16_t)(converters[i].converter + aliasOffset));
}
/* write the table of tags */
/* Think of this as the row headers */
for(i=UCNV_NUM_RESERVED_TAGS; i<tagCount; ++i) {
udata_write16(out, tags[i].tag);
}
/* The empty tag is considered the leftover list, and put that at the end of the priority list. */
udata_write16(out, tags[EMPTY_TAG_NUM].tag);
udata_write16(out, tags[ALL_TAG_NUM].tag);
/* Write the unique list of aliases */
udata_writeBlock(out, uniqueAliases, uniqueAliasesSize * sizeof(uint16_t));
/* Write the unique list of aliases */
udata_writeBlock(out, uniqueAliasesToConverter, uniqueAliasesSize * sizeof(uint16_t));
/* Write the array to the lists */
udata_writeBlock(out, (const void *)(aliasArrLists + (2*converterCount)), (((tagCount - 2) * converterCount) * sizeof(uint16_t)));
/* Now write the leftover part of the array for the EMPTY and ALL lists */
udata_writeBlock(out, (const void *)aliasArrLists, (2 * converterCount * sizeof(uint16_t)));
/* Offset the next array to make the index start at 1. */
udata_write16(out, 0xDEAD);
/* Write the lists */
udata_writeBlock(out, (const void *)aliasLists, aliasListsSize * sizeof(uint16_t));
/* write the tags strings */
udata_writeString(out, tagBlock.store, tagBlock.top);
/* write the aliases strings */
udata_writeString(out, stringBlock.store, stringBlock.top);
uprv_free(aliasArrLists);
uprv_free(uniqueAliases);
}
static char *
allocString(StringBlock *block, const char *s, int32_t length) {
uint32_t top;
char *p;
if(length<0) {
length=(int32_t)uprv_strlen(s);
}
/*
* add 1 for the terminating NUL
* and round up (+1 &~1)
* to keep the addresses on a 16-bit boundary
*/
top=block->top + (uint32_t)((length + 1 + 1) & ~1);
if(top >= block->max) {
fprintf(stderr, "error(line %d): out of memory\n", lineNum);
exit(U_MEMORY_ALLOCATION_ERROR);
}
/* get the pointer and copy the string */
p = block->store + block->top;
uprv_memcpy(p, s, length);
p[length] = 0; /* NUL-terminate it */
if((length & 1) == 0) {
p[length + 1] = 0; /* set the padding byte */
}
/* check for invariant characters now that we have a NUL-terminated string for easy output */
if(!uprv_isInvariantString(p, length)) {
fprintf(stderr, "error(line %d): the name %s contains not just invariant characters\n", lineNum, p);
exit(U_INVALID_TABLE_FORMAT);
}
block->top = top;
return p;
}
static int
compareAliases(const void *alias1, const void *alias2) {
/* Names like IBM850 and ibm-850 need to be sorted together */
int result = ucnv_compareNames(GET_ALIAS_STR(*(uint16_t*)alias1), GET_ALIAS_STR(*(uint16_t*)alias2));
if (!result) {
/* Sort the shortest first */
return (int)uprv_strlen(GET_ALIAS_STR(*(uint16_t*)alias1)) - (int)uprv_strlen(GET_ALIAS_STR(*(uint16_t*)alias2));
}
return result;
}
/*
* Hey, Emacs, please set the following:
*
* Local Variables:
* indent-tabs-mode: nil
* End:
*
*/
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