/*
*******************************************************************************
*
* Copyright (C) 2003-2014, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: pkgitems.cpp
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2005sep18
* created by: Markus W. Scherer
*
* Companion file to package.cpp. Deals with details of ICU data item formats.
* Used for item dependencies.
* Contains adapted code from ucnv_bld.c (swapper code from 2003).
*/
#include "unicode/utypes.h"
#include "unicode/ures.h"
#include "unicode/putil.h"
#include "unicode/udata.h"
#include "cstring.h"
#include "uinvchar.h"
#include "ucmndata.h"
#include "udataswp.h"
#include "swapimpl.h"
#include "toolutil.h"
#include "package.h"
#include "pkg_imp.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* item formats in common */
#include "uresdata.h"
#include "ucnv_bld.h"
#include "ucnv_io.h"
// general definitions ----------------------------------------------------- ***
U_CDECL_BEGIN
static void U_CALLCONV
printError(void *context, const char *fmt, va_list args) {
vfprintf((FILE *)context, fmt, args);
}
U_CDECL_END
// a data item in native-platform form ------------------------------------- ***
U_NAMESPACE_BEGIN
class NativeItem {
public:
NativeItem() : pItem(NULL), pInfo(NULL), bytes(NULL), swapped(NULL), length(0) {}
NativeItem(const Item *item, UDataSwapFn *swap) : swapped(NULL) {
setItem(item, swap);
}
~NativeItem() {
delete [] swapped;
}
const UDataInfo *getDataInfo() const {
return pInfo;
}
const uint8_t *getBytes() const {
return bytes;
}
int32_t getLength() const {
return length;
}
void setItem(const Item *item, UDataSwapFn *swap) {
pItem=item;
int32_t infoLength, itemHeaderLength;
UErrorCode errorCode=U_ZERO_ERROR;
pInfo=::getDataInfo(pItem->data, pItem->length, infoLength, itemHeaderLength, &errorCode);
if(U_FAILURE(errorCode)) {
exit(errorCode); // should succeed because readFile() checks headers
}
length=pItem->length-itemHeaderLength;
if(pInfo->isBigEndian==U_IS_BIG_ENDIAN && pInfo->charsetFamily==U_CHARSET_FAMILY) {
bytes=pItem->data+itemHeaderLength;
} else {
UDataSwapper *ds=udata_openSwapper((UBool)pInfo->isBigEndian, pInfo->charsetFamily, U_IS_BIG_ENDIAN, U_CHARSET_FAMILY, &errorCode);
if(U_FAILURE(errorCode)) {
fprintf(stderr, "icupkg: udata_openSwapper(\"%s\") failed - %s\n",
pItem->name, u_errorName(errorCode));
exit(errorCode);
}
ds->printError=printError;
ds->printErrorContext=stderr;
swapped=new uint8_t[pItem->length];
if(swapped==NULL) {
fprintf(stderr, "icupkg: unable to allocate memory for swapping \"%s\"\n", pItem->name);
exit(U_MEMORY_ALLOCATION_ERROR);
}
swap(ds, pItem->data, pItem->length, swapped, &errorCode);
pInfo=::getDataInfo(swapped, pItem->length, infoLength, itemHeaderLength, &errorCode);
bytes=swapped+itemHeaderLength;
udata_closeSwapper(ds);
}
}
private:
const Item *pItem;
const UDataInfo *pInfo;
const uint8_t *bytes;
uint8_t *swapped;
int32_t length;
};
// check a dependency ------------------------------------------------------ ***
/*
* assemble the target item name from the source item name, an ID
* and a suffix
*/
static void
makeTargetName(const char *itemName, const char *id, int32_t idLength, const char *suffix,
char *target, int32_t capacity,
UErrorCode *pErrorCode) {
const char *itemID;
int32_t treeLength, suffixLength, targetLength;
// get the item basename
itemID=strrchr(itemName, '/');
if(itemID!=NULL) {
++itemID;
} else {
itemID=itemName;
}
// build the target string
treeLength=(int32_t)(itemID-itemName);
if(idLength<0) {
idLength=(int32_t)strlen(id);
}
suffixLength=(int32_t)strlen(suffix);
targetLength=treeLength+idLength+suffixLength;
if(targetLength>=capacity) {
fprintf(stderr, "icupkg/makeTargetName(%s) target item name length %ld too long\n",
itemName, (long)targetLength);
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
return;
}
memcpy(target, itemName, treeLength);
memcpy(target+treeLength, id, idLength);
memcpy(target+treeLength+idLength, suffix, suffixLength+1); // +1 includes the terminating NUL
}
static void
checkIDSuffix(const char *itemName, const char *id, int32_t idLength, const char *suffix,
CheckDependency check, void *context,
UErrorCode *pErrorCode) {
char target[200];
makeTargetName(itemName, id, idLength, suffix, target, (int32_t)sizeof(target), pErrorCode);
if(U_SUCCESS(*pErrorCode)) {
check(context, itemName, target);
}
}
/* assemble the target item name from the item's parent item name */
static void
checkParent(const char *itemName, CheckDependency check, void *context,
UErrorCode *pErrorCode) {
const char *itemID, *parent, *parentLimit, *suffix;
int32_t parentLength;
// get the item basename
itemID=strrchr(itemName, '/');
if(itemID!=NULL) {
++itemID;
} else {
itemID=itemName;
}
// get the item suffix
suffix=strrchr(itemID, '.');
if(suffix==NULL) {
// empty suffix, point to the end of the string
suffix=strrchr(itemID, 0);
}
// get the position of the last '_'
for(parentLimit=suffix; parentLimit>itemID && *--parentLimit!='_';) {}
if(parentLimit!=itemID) {
// get the parent item name by truncating the last part of this item's name */
parent=itemID;
parentLength=(int32_t)(parentLimit-itemID);
} else {
// no '_' in the item name: the parent is the root bundle
parent="root";
parentLength=4;
if((suffix-itemID)==parentLength && 0==memcmp(itemID, parent, parentLength)) {
// the item itself is "root", which does not depend on a parent
return;
}
}
checkIDSuffix(itemName, parent, parentLength, suffix, check, context, pErrorCode);
}
// get dependencies from resource bundles ---------------------------------- ***
static const UChar SLASH=0x2f;
/*
* Check for the alias from the string or alias resource res.
*/
static void
checkAlias(const char *itemName,
Resource res, const UChar *alias, int32_t length, UBool useResSuffix,
CheckDependency check, void *context, UErrorCode *pErrorCode) {
int32_t i;
if(!uprv_isInvariantUString(alias, length)) {
fprintf(stderr, "icupkg/ures_enumDependencies(%s res=%08x) alias string contains non-invariant characters\n",
itemName, res);
*pErrorCode=U_INVALID_CHAR_FOUND;
return;
}
// extract the locale ID from alias strings like
// locale_ID/key1/key2/key3
// locale_ID
// search for the first slash
for(i=0; i<length && alias[i]!=SLASH; ++i) {}
if(res_getPublicType(res)==URES_ALIAS) {
// ignore aliases with an initial slash:
// /ICUDATA/... and /pkgname/... go to a different package
// /LOCALE/... are for dynamic sideways fallbacks and don't go to a fixed bundle
if(i==0) {
return; // initial slash ('/')
}
// ignore the intra-bundle path starting from the first slash ('/')
length=i;
} else /* URES_STRING */ {
// the whole string should only consist of a locale ID
if(i!=length) {
fprintf(stderr, "icupkg/ures_enumDependencies(%s res=%08x) %%ALIAS contains a '/'\n",
itemName, res);
*pErrorCode=U_UNSUPPORTED_ERROR;
return;
}
}
// convert the Unicode string to char *
char localeID[32];
if(length>=(int32_t)sizeof(localeID)) {
fprintf(stderr, "icupkg/ures_enumDependencies(%s res=%08x) alias locale ID length %ld too long\n",
itemName, res, (long)length);
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
return;
}
u_UCharsToChars(alias, localeID, length);
localeID[length]=0;
checkIDSuffix(itemName, localeID, -1, (useResSuffix ? ".res" : ""), check, context, pErrorCode);
}
/*
* Enumerate one resource item and its children and extract dependencies from
* aliases.
*/
static void
ures_enumDependencies(const char *itemName,
const ResourceData *pResData,
Resource res, const char *inKey, const char *parentKey, int32_t depth,
CheckDependency check, void *context,
Package *pkg,
UErrorCode *pErrorCode) {
switch(res_getPublicType(res)) {
case URES_STRING:
{
UBool useResSuffix = TRUE;
// Check for %%ALIAS
if(depth==1 && inKey!=NULL) {
if(0!=strcmp(inKey, "%%ALIAS")) {
break;
}
}
// Check for %%DEPENDENCY
else if(depth==2 && parentKey!=NULL) {
if(0!=strcmp(parentKey, "%%DEPENDENCY")) {
break;
}
useResSuffix = FALSE;
} else {
// we ignore all other strings
break;
}
int32_t length;
const UChar *alias=res_getString(pResData, res, &length);
checkAlias(itemName, res, alias, length, useResSuffix, check, context, pErrorCode);
}
break;
case URES_ALIAS:
{
int32_t length;
const UChar *alias=res_getAlias(pResData, res, &length);
checkAlias(itemName, res, alias, length, TRUE, check, context, pErrorCode);
}
break;
case URES_TABLE:
{
/* recurse */
int32_t count=res_countArrayItems(pResData, res);
for(int32_t i=0; i<count; ++i) {
const char *itemKey;
Resource item=res_getTableItemByIndex(pResData, res, i, &itemKey);
ures_enumDependencies(
itemName, pResData,
item, itemKey,
inKey, depth+1,
check, context,
pkg,
pErrorCode);
if(U_FAILURE(*pErrorCode)) {
fprintf(stderr, "icupkg/ures_enumDependencies(%s table res=%08x)[%d].recurse(%s: %08x) failed\n",
itemName, res, i, itemKey, item);
break;
}
}
}
break;
case URES_ARRAY:
{
/* recurse */
int32_t count=res_countArrayItems(pResData, res);
for(int32_t i=0; i<count; ++i) {
Resource item=res_getArrayItem(pResData, res, i);
ures_enumDependencies(
itemName, pResData,
item, NULL,
inKey, depth+1,
check, context,
pkg,
pErrorCode);
if(U_FAILURE(*pErrorCode)) {
fprintf(stderr, "icupkg/ures_enumDependencies(%s array res=%08x)[%d].recurse(%08x) failed\n",
itemName, res, i, item);
break;
}
}
}
break;
default:
break;
}
}
static void
ures_enumDependencies(const char *itemName, const UDataInfo *pInfo,
const uint8_t *inBytes, int32_t length,
CheckDependency check, void *context,
Package *pkg,
UErrorCode *pErrorCode) {
ResourceData resData;
res_read(&resData, pInfo, inBytes, length, pErrorCode);
if(U_FAILURE(*pErrorCode)) {
fprintf(stderr, "icupkg: .res format version %02x.%02x not supported, or bundle malformed\n",
pInfo->formatVersion[0], pInfo->formatVersion[1]);
exit(U_UNSUPPORTED_ERROR);
}
/*
* if the bundle attributes are present and the nofallback flag is not set,
* then add the parent bundle as a dependency
*/
if(pInfo->formatVersion[0]>1 || (pInfo->formatVersion[0]==1 && pInfo->formatVersion[1]>=1)) {
if(!resData.noFallback) {
/* this bundle participates in locale fallback */
checkParent(itemName, check, context, pErrorCode);
}
}
icu::NativeItem nativePool;
if(resData.usesPoolBundle) {
char poolName[200];
makeTargetName(itemName, "pool", 4, ".res", poolName, (int32_t)sizeof(poolName), pErrorCode);
if(U_FAILURE(*pErrorCode)) {
return;
}
check(context, itemName, poolName);
int32_t index=pkg->findItem(poolName);
if(index<0) {
// We cannot work with a bundle if its pool resource is missing.
// check() already printed a complaint.
return;
}
// TODO: Cache the native version in the Item itself.
nativePool.setItem(pkg->getItem(index), ures_swap);
const UDataInfo *poolInfo=nativePool.getDataInfo();
if(poolInfo->formatVersion[0]<=1) {
fprintf(stderr, "icupkg: %s is not a pool bundle\n", poolName);
return;
}
const int32_t *poolIndexes=(const int32_t *)nativePool.getBytes()+1;
int32_t poolIndexLength=poolIndexes[URES_INDEX_LENGTH]&0xff;
if(!(poolIndexLength>URES_INDEX_POOL_CHECKSUM &&
(poolIndexes[URES_INDEX_ATTRIBUTES]&URES_ATT_IS_POOL_BUNDLE))
) {
fprintf(stderr, "icupkg: %s is not a pool bundle\n", poolName);
return;
}
if(resData.pRoot[1+URES_INDEX_POOL_CHECKSUM]==poolIndexes[URES_INDEX_POOL_CHECKSUM]) {
resData.poolBundleKeys=(const char *)(poolIndexes+poolIndexLength);
} else {
fprintf(stderr, "icupkg: %s has mismatched checksum for %s\n", poolName, itemName);
return;
}
}
ures_enumDependencies(
itemName, &resData,
resData.rootRes, NULL, NULL, 0,
check, context,
pkg,
pErrorCode);
}
// get dependencies from conversion tables --------------------------------- ***
/* code adapted from ucnv_swap() */
static void
ucnv_enumDependencies(const UDataSwapper *ds,
const char *itemName, const UDataInfo *pInfo,
const uint8_t *inBytes, int32_t length,
CheckDependency check, void *context,
UErrorCode *pErrorCode) {
uint32_t staticDataSize;
const UConverterStaticData *inStaticData;
const _MBCSHeader *inMBCSHeader;
uint8_t outputType;
/* check format version */
if(!(
pInfo->formatVersion[0]==6 &&
pInfo->formatVersion[1]>=2
)) {
fprintf(stderr, "icupkg/ucnv_enumDependencies(): .cnv format version %02x.%02x not supported\n",
pInfo->formatVersion[0], pInfo->formatVersion[1]);
exit(U_UNSUPPORTED_ERROR);
}
/* read the initial UConverterStaticData structure after the UDataInfo header */
inStaticData=(const UConverterStaticData *)inBytes;
if( length<(int32_t)sizeof(UConverterStaticData) ||
(uint32_t)length<(staticDataSize=ds->readUInt32(inStaticData->structSize))
) {
udata_printError(ds, "icupkg/ucnv_enumDependencies(): too few bytes (%d after header) for an ICU .cnv conversion table\n",
length);
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return;
}
inBytes+=staticDataSize;
length-=(int32_t)staticDataSize;
/* check for supported conversionType values */
if(inStaticData->conversionType==UCNV_MBCS) {
/* MBCS data */
uint32_t mbcsHeaderLength, mbcsHeaderFlags, mbcsHeaderOptions;
int32_t extOffset;
inMBCSHeader=(const _MBCSHeader *)inBytes;
if(length<(int32_t)sizeof(_MBCSHeader)) {
udata_printError(ds, "icupkg/ucnv_enumDependencies(): too few bytes (%d after headers) for an ICU MBCS .cnv conversion table\n",
length);
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return;
}
if(inMBCSHeader->version[0]==4 && inMBCSHeader->version[1]>=1) {
mbcsHeaderLength=MBCS_HEADER_V4_LENGTH;
} else if(inMBCSHeader->version[0]==5 && inMBCSHeader->version[1]>=3 &&
((mbcsHeaderOptions=ds->readUInt32(inMBCSHeader->options))&
MBCS_OPT_UNKNOWN_INCOMPATIBLE_MASK)==0
) {
mbcsHeaderLength=mbcsHeaderOptions&MBCS_OPT_LENGTH_MASK;
} else {
udata_printError(ds, "icupkg/ucnv_enumDependencies(): unsupported _MBCSHeader.version %d.%d\n",
inMBCSHeader->version[0], inMBCSHeader->version[1]);
*pErrorCode=U_UNSUPPORTED_ERROR;
return;
}
mbcsHeaderFlags=ds->readUInt32(inMBCSHeader->flags);
extOffset=(int32_t)(mbcsHeaderFlags>>8);
outputType=(uint8_t)mbcsHeaderFlags;
if(outputType==MBCS_OUTPUT_EXT_ONLY) {
/*
* extension-only file,
* contains a base name instead of normal base table data
*/
char baseName[32];
int32_t baseNameLength;
/* there is extension data after the base data, see ucnv_ext.h */
if(length<(extOffset+UCNV_EXT_INDEXES_MIN_LENGTH*4)) {
udata_printError(ds, "icupkg/ucnv_enumDependencies(): too few bytes (%d after headers) for an ICU MBCS .cnv conversion table with extension data\n",
length);
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return;
}
/* swap the base name, between the header and the extension data */
const char *inBaseName=(const char *)inBytes+mbcsHeaderLength*4;
baseNameLength=(int32_t)strlen(inBaseName);
if(baseNameLength>=(int32_t)sizeof(baseName)) {
udata_printError(ds, "icupkg/ucnv_enumDependencies(%s): base name length %ld too long\n",
itemName, baseNameLength);
*pErrorCode=U_UNSUPPORTED_ERROR;
return;
}
ds->swapInvChars(ds, inBaseName, baseNameLength+1, baseName, pErrorCode);
checkIDSuffix(itemName, baseName, -1, ".cnv", check, context, pErrorCode);
}
}
}
// ICU data formats -------------------------------------------------------- ***
static const struct {
uint8_t dataFormat[4];
} dataFormats[]={
{ { 0x52, 0x65, 0x73, 0x42 } }, /* dataFormat="ResB" */
{ { 0x63, 0x6e, 0x76, 0x74 } }, /* dataFormat="cnvt" */
{ { 0x43, 0x76, 0x41, 0x6c } } /* dataFormat="CvAl" */
};
enum {
FMT_RES,
FMT_CNV,
FMT_ALIAS,
FMT_COUNT
};
static int32_t
getDataFormat(const uint8_t dataFormat[4]) {
int32_t i;
for(i=0; i<FMT_COUNT; ++i) {
if(0==memcmp(dataFormats[i].dataFormat, dataFormat, 4)) {
return i;
}
}
return -1;
}
// enumerate dependencies of a package item -------------------------------- ***
void
Package::enumDependencies(Item *pItem, void *context, CheckDependency check) {
int32_t infoLength, itemHeaderLength;
UErrorCode errorCode=U_ZERO_ERROR;
const UDataInfo *pInfo=getDataInfo(pItem->data, pItem->length, infoLength, itemHeaderLength, &errorCode);
if(U_FAILURE(errorCode)) {
return; // should not occur because readFile() checks headers
}
// find the data format and call the corresponding function, if any
int32_t format=getDataFormat(pInfo->dataFormat);
if(format>=0) {
switch(format) {
case FMT_RES:
{
/*
* Swap the resource bundle (if necessary) so that we can use
* the normal runtime uresdata.c code to read it.
* We do not want to duplicate that code, especially not together with on-the-fly swapping.
*/
NativeItem nrb(pItem, ures_swap);
ures_enumDependencies(pItem->name, nrb.getDataInfo(), nrb.getBytes(), nrb.getLength(), check, context, this, &errorCode);
break;
}
case FMT_CNV:
{
// TODO: share/cache swappers
UDataSwapper *ds=udata_openSwapper(
(UBool)pInfo->isBigEndian, pInfo->charsetFamily,
U_IS_BIG_ENDIAN, U_CHARSET_FAMILY,
&errorCode);
if(U_FAILURE(errorCode)) {
fprintf(stderr, "icupkg: udata_openSwapper(\"%s\") failed - %s\n",
pItem->name, u_errorName(errorCode));
exit(errorCode);
}
ds->printError=printError;
ds->printErrorContext=stderr;
const uint8_t *inBytes=pItem->data+itemHeaderLength;
int32_t length=pItem->length-itemHeaderLength;
ucnv_enumDependencies(ds, pItem->name, pInfo, inBytes, length, check, context, &errorCode);
udata_closeSwapper(ds);
break;
}
default:
break;
}
if(U_FAILURE(errorCode)) {
exit(errorCode);
}
}
}
U_NAMESPACE_END