Mercurial > hg > orthanc
view Resources/WebAssembly/dcdict.cc @ 3244:6f35279215c4
cont
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 16 Feb 2019 10:27:07 +0100 |
parents | 97a74f0eac7a |
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/* * * Copyright (C) 1994-2016, OFFIS e.V. * All rights reserved. See COPYRIGHT file for details. * * This software and supporting documentation were developed by * * OFFIS e.V. * R&D Division Health * Escherweg 2 * D-26121 Oldenburg, Germany * * * Module: dcmdata * * Author: Andrew Hewett * * Purpose: loadable DICOM data dictionary * */ #include "dcmtk/config/osconfig.h" /* make sure OS specific configuration is included first */ #include "dcmtk/ofstd/ofstd.h" #include "dcmtk/dcmdata/dcdict.h" #include "dcmtk/ofstd/ofdefine.h" #include "dcmtk/dcmdata/dcdicent.h" #include "dcmtk/dcmdata/dctypes.h" #define INCLUDE_CSTDLIB #define INCLUDE_CSTDIO #define INCLUDE_CSTRING #define INCLUDE_CCTYPE #include "dcmtk/ofstd/ofstdinc.h" /* ** The separator character between fields in the data dictionary file(s) */ #define DCM_DICT_FIELD_SEPARATOR_CHAR '\t' /* ** Comment character for the data dictionary file(s) */ #define DCM_DICT_COMMENT_CHAR '#' /* ** THE Global DICOM Data Dictionary */ GlobalDcmDataDictionary dcmDataDict; /* ** Member Functions */ static DcmDictEntry* makeSkelEntry(Uint16 group, Uint16 element, Uint16 upperGroup, Uint16 upperElement, DcmEVR evr, const char* tagName, int vmMin, int vmMax, const char* standardVersion, DcmDictRangeRestriction groupRestriction, DcmDictRangeRestriction elementRestriction, const char* privCreator) { DcmDictEntry* e = NULL; e = new DcmDictEntry(group, element, upperGroup, upperElement, evr, tagName, vmMin, vmMax, standardVersion, OFFalse, privCreator); if (e != NULL) { e->setGroupRangeRestriction(groupRestriction); e->setElementRangeRestriction(elementRestriction); } return e; } OFBool DcmDataDictionary::loadSkeletonDictionary() { /* ** We need to know about Group Lengths to compute them */ DcmDictEntry* e = NULL; e = makeSkelEntry(0x0000, 0x0000, 0xffff, 0x0000, EVR_UL, "GenericGroupLength", 1, 1, "GENERIC", DcmDictRange_Unspecified, DcmDictRange_Unspecified, NULL); addEntry(e); /* ** We need to know about Items and Delimitation Items to parse ** (and construct) sequences. */ e = makeSkelEntry(0xfffe, 0xe000, 0xfffe, 0xe000, EVR_na, "Item", 1, 1, "DICOM", DcmDictRange_Unspecified, DcmDictRange_Unspecified, NULL); addEntry(e); e = makeSkelEntry(0xfffe, 0xe00d, 0xfffe, 0xe00d, EVR_na, "ItemDelimitationItem", 1, 1, "DICOM", DcmDictRange_Unspecified, DcmDictRange_Unspecified, NULL); addEntry(e); e = makeSkelEntry(0xfffe, 0xe0dd, 0xfffe, 0xe0dd, EVR_na, "SequenceDelimitationItem", 1, 1, "DICOM", DcmDictRange_Unspecified, DcmDictRange_Unspecified, NULL); addEntry(e); skeletonCount = numberOfEntries(); return OFTrue; } DcmDataDictionary::DcmDataDictionary(OFBool loadBuiltin, OFBool loadExternal) : hashDict(), repDict(), skeletonCount(0), dictionaryLoaded(OFFalse) { reloadDictionaries(loadBuiltin, loadExternal); } DcmDataDictionary::~DcmDataDictionary() { clear(); } void DcmDataDictionary::clear() { hashDict.clear(); repDict.clear(); skeletonCount = 0; dictionaryLoaded = OFFalse; } static void stripWhitespace(char* s) { if (s) { unsigned char c; unsigned char *t; unsigned char *p; t=p=OFreinterpret_cast(unsigned char *, s); while ((c = *t++)) if (!isspace(c)) *p++ = c; *p = '\0'; } } static char* stripTrailingWhitespace(char* s) { if (s == NULL) return s; for ( char* it = s + strlen(s) - 1; it >= s && isspace(OFstatic_cast(unsigned char, *it)); *it-- = '\0' ); return s; } static void stripLeadingWhitespace(char* s) { if (s) { unsigned char c; unsigned char *t; unsigned char *p; t=p=OFreinterpret_cast(unsigned char *, s); while (isspace(*t)) t++; while ((c = *t++)) *p++ = c; *p = '\0'; } } static OFBool parseVMField(char* vmField, int& vmMin, int& vmMax) { OFBool ok = OFTrue; char c = 0; int dummy = 0; /* strip any whitespace */ stripWhitespace(vmField); if (sscanf(vmField, "%d-%d%c", &vmMin, &dummy, &c) == 3) { /* treat "2-2n" like "2-n" for the moment */ if ((c == 'n') || (c == 'N')) { vmMax = DcmVariableVM; } else { ok = OFFalse; } } else if (sscanf(vmField, "%d-%d", &vmMin, &vmMax) == 2) { /* range VM (e.g. "2-6") */ } else if (sscanf(vmField, "%d-%c", &vmMin, &c) == 2) { if ((c == 'n') || (c == 'N')) { vmMax = DcmVariableVM; } else { ok = OFFalse; } } else if (sscanf(vmField, "%d%c", &vmMin, &c) == 2) { /* treat "2n" like "2-n" for the moment */ if ((c == 'n') || (c == 'N')) { vmMax = DcmVariableVM; } else { ok = OFFalse; } } else if (sscanf(vmField, "%d", &vmMin) == 1) { /* fixed VM */ vmMax = vmMin; } else if (sscanf(vmField, "%c", &c) == 1) { /* treat "n" like "1-n" */ if ((c == 'n') || (c == 'N')) { vmMin = 1; vmMax = DcmVariableVM; } else { ok = OFFalse; } } else { ok = OFFalse; } return ok; } static int splitFields(const char* line, char* fields[], int maxFields, char splitChar) { const char *p; int foundFields = 0; size_t len; do { #ifdef __BORLANDC__ // Borland Builder expects a non-const argument p = strchr(OFconst_cast(char *, line), splitChar); #else p = strchr(line, splitChar); #endif if (p == NULL) { len = strlen(line); } else { len = p - line; } fields[foundFields] = OFstatic_cast(char *, malloc(len + 1)); strncpy(fields[foundFields], line, len); fields[foundFields][len] = '\0'; foundFields++; line = p + 1; } while ((foundFields < maxFields) && (p != NULL)); return foundFields; } static OFBool parseTagPart(char *s, unsigned int& l, unsigned int& h, DcmDictRangeRestriction& r) { OFBool ok = OFTrue; char restrictor = ' '; r = DcmDictRange_Unspecified; /* by default */ if (sscanf(s, "%x-%c-%x", &l, &restrictor, &h) == 3) { switch (restrictor) { case 'o': case 'O': r = DcmDictRange_Odd; break; case 'e': case 'E': r = DcmDictRange_Even; break; case 'u': case 'U': r = DcmDictRange_Unspecified; break; default: DCMDATA_ERROR("DcmDataDictionary: Unknown range restrictor: " << restrictor); ok = OFFalse; break; } } else if (sscanf(s, "%x-%x", &l, &h) == 2) { r = DcmDictRange_Even; /* by default */ } else if (sscanf(s, "%x", &l) == 1) { h = l; } else { ok = OFFalse; } return ok; } static OFBool parseWholeTagField(char* s, DcmTagKey& key, DcmTagKey& upperKey, DcmDictRangeRestriction& groupRestriction, DcmDictRangeRestriction& elementRestriction, char *&privCreator) { unsigned int gl, gh, el, eh; groupRestriction = DcmDictRange_Unspecified; elementRestriction = DcmDictRange_Unspecified; stripLeadingWhitespace(s); stripTrailingWhitespace(s); char gs[64]; char es[64]; char pc[64]; size_t slen = strlen(s); if (s[0] != '(') return OFFalse; if (s[slen - 1] != ')') return OFFalse; if (strchr(s, ',') == NULL) return OFFalse; /* separate the group and element parts */ int i = 1; /* after the '(' */ int gi = 0; for (; s[i] != ',' && s[i] != '\0'; i++) { gs[gi] = s[i]; gi++; } gs[gi] = '\0'; if (s[i] == '\0') return OFFalse; /* element part missing */ i++; /* after the ',' */ stripLeadingWhitespace(s + i); int pi = 0; if (s[i] == '\"') /* private creator */ { i++; // skip opening quotation mark for (; s[i] != '\"' && s[i] != '\0'; i++) pc[pi++] = s[i]; pc[pi] = '\0'; if (s[i] == '\0') return OFFalse; /* closing quotation mark missing */ i++; stripLeadingWhitespace(s + i); if (s[i] != ',') return OFFalse; /* element part missing */ i++; /* after the ',' */ } int ei = 0; for (; s[i] != ')' && s[i] != '\0'; i++) { es[ei] = s[i]; ei++; } es[ei] = '\0'; /* parse the tag parts into their components */ stripWhitespace(gs); if (parseTagPart(gs, gl, gh, groupRestriction) == OFFalse) return OFFalse; stripWhitespace(es); if (parseTagPart(es, el, eh, elementRestriction) == OFFalse) return OFFalse; if (pi > 0) { // copy private creator name privCreator = new char[strlen(pc) + 1]; // deleted by caller if (privCreator) strcpy(privCreator,pc); } key.set(OFstatic_cast(unsigned short, gl), OFstatic_cast(unsigned short, el)); upperKey.set(OFstatic_cast(unsigned short, gh), OFstatic_cast(unsigned short, eh)); return OFTrue; } static OFBool onlyWhitespace(const char* s) { size_t len = strlen(s); int charsFound = OFFalse; for (size_t i = 0; (!charsFound) && (i < len); ++i) { charsFound = !isspace(OFstatic_cast(unsigned char, s[i])); } return (!charsFound)? (OFTrue) : (OFFalse); } static char* getLine(char* line, int maxLineLen, FILE* f) { char* s; s = fgets(line, maxLineLen, f); /* strip any trailing white space */ stripTrailingWhitespace(line); return s; } static OFBool isaCommentLine(const char* s) { OFBool isComment = OFFalse; /* assumption */ size_t len = strlen(s); size_t i = 0; for (i = 0; i < len && isspace(OFstatic_cast(unsigned char, s[i])); ++i) /*loop*/; isComment = (s[i] == DCM_DICT_COMMENT_CHAR); return isComment; } OFBool DcmDataDictionary::reloadDictionaries(OFBool loadBuiltin, OFBool loadExternal) { OFBool result = OFTrue; clear(); loadSkeletonDictionary(); if (loadBuiltin) { loadBuiltinDictionary(); dictionaryLoaded = (numberOfEntries() > skeletonCount); if (!dictionaryLoaded) result = OFFalse; } if (loadExternal) { if (loadExternalDictionaries()) dictionaryLoaded = OFTrue; else result = OFFalse; } return result; } OFBool DcmDataDictionary::loadDictionary(const char* fileName, OFBool errorIfAbsent) { char lineBuf[DCM_MAXDICTLINESIZE + 1]; FILE* f = NULL; int lineNumber = 0; char* lineFields[DCM_MAXDICTFIELDS + 1]; int fieldsPresent; DcmDictEntry* e; int errorsEncountered = 0; OFBool errorOnThisLine = OFFalse; int i; DcmTagKey key, upperKey; DcmDictRangeRestriction groupRestriction = DcmDictRange_Unspecified; DcmDictRangeRestriction elementRestriction = DcmDictRange_Unspecified; DcmVR vr; char* vrName; char* tagName; char* privCreator; int vmMin, vmMax = 1; const char* standardVersion; /* first, check whether 'fileName' really points to a file (and not to a directory or the like) */ if (!OFStandard::fileExists(fileName) || (f = fopen(fileName, "r")) == NULL) { if (errorIfAbsent) { DCMDATA_ERROR("DcmDataDictionary: Cannot open file: " << fileName); } return OFFalse; } DCMDATA_DEBUG("DcmDataDictionary: Loading file: " << fileName); while (getLine(lineBuf, DCM_MAXDICTLINESIZE, f)) { lineNumber++; if (onlyWhitespace(lineBuf)) { continue; /* ignore this line */ } if (isaCommentLine(lineBuf)) { continue; /* ignore this line */ } errorOnThisLine = OFFalse; /* fields are tab separated */ fieldsPresent = splitFields(lineBuf, lineFields, DCM_MAXDICTFIELDS, DCM_DICT_FIELD_SEPARATOR_CHAR); /* initialize dict entry fields */ vrName = NULL; tagName = NULL; privCreator = NULL; vmMin = vmMax = 1; standardVersion = "DICOM"; switch (fieldsPresent) { case 0: case 1: case 2: DCMDATA_ERROR("DcmDataDictionary: "<< fileName << ": " << "too few fields (line " << lineNumber << ")"); errorOnThisLine = OFTrue; break; default: DCMDATA_ERROR("DcmDataDictionary: " << fileName << ": " << "too many fields (line " << lineNumber << "): "); errorOnThisLine = OFTrue; break; case 5: stripWhitespace(lineFields[4]); standardVersion = lineFields[4]; /* drop through to next case label */ case 4: /* the VM field is present */ if (!parseVMField(lineFields[3], vmMin, vmMax)) { DCMDATA_ERROR("DcmDataDictionary: " << fileName << ": " << "bad VM field (line " << lineNumber << "): " << lineFields[3]); errorOnThisLine = OFTrue; } /* drop through to next case label */ case 3: if (!parseWholeTagField(lineFields[0], key, upperKey, groupRestriction, elementRestriction, privCreator)) { DCMDATA_ERROR("DcmDataDictionary: " << fileName << ": " << "bad Tag field (line " << lineNumber << "): " << lineFields[0]); errorOnThisLine = OFTrue; } else { /* all is OK */ vrName = lineFields[1]; stripWhitespace(vrName); tagName = lineFields[2]; stripWhitespace(tagName); } } if (!errorOnThisLine) { /* check the VR Field */ vr.setVR(vrName); if (vr.getEVR() == EVR_UNKNOWN) { DCMDATA_ERROR("DcmDataDictionary: " << fileName << ": " << "bad VR field (line " << lineNumber << "): " << vrName); errorOnThisLine = OFTrue; } } if (!errorOnThisLine) { e = new DcmDictEntry( key.getGroup(), key.getElement(), upperKey.getGroup(), upperKey.getElement(), vr, tagName, vmMin, vmMax, standardVersion, OFTrue, privCreator); e->setGroupRangeRestriction(groupRestriction); e->setElementRangeRestriction(elementRestriction); addEntry(e); } for (i = 0; i < fieldsPresent; i++) { free(lineFields[i]); lineFields[i] = NULL; } delete[] privCreator; if (errorOnThisLine) { errorsEncountered++; } } fclose(f); /* return OFFalse in case of errors and set internal state accordingly */ if (errorsEncountered == 0) { dictionaryLoaded = OFTrue; return OFTrue; } else { dictionaryLoaded = OFFalse; return OFFalse; } } #ifndef HAVE_GETENV static char* getenv() { return NULL; } #endif /* !HAVE_GETENV */ OFBool DcmDataDictionary::loadExternalDictionaries() { const char* env = NULL; size_t len; int sepCnt = 0; OFBool msgIfDictAbsent = OFTrue; OFBool loadFailed = OFFalse; env = getenv(DCM_DICT_ENVIRONMENT_VARIABLE); if ((env == NULL) || (strlen(env) == 0)) { env = DCM_DICT_DEFAULT_PATH; msgIfDictAbsent = OFFalse; } if ((env != NULL) && (strlen(env) != 0)) { len = strlen(env); for (size_t i = 0; i < len; ++i) { if (env[i] == ENVIRONMENT_PATH_SEPARATOR) { sepCnt++; } } if (sepCnt == 0) { if (!loadDictionary(env, msgIfDictAbsent)) { return OFFalse; } } else { char** dictArray; dictArray = OFstatic_cast(char **, malloc((sepCnt + 1) * sizeof(char*))); int ndicts = splitFields(env, dictArray, sepCnt + 1, ENVIRONMENT_PATH_SEPARATOR); for (int ii = 0; ii < ndicts; ii++) { if ((dictArray[ii] != NULL) && (strlen(dictArray[ii]) > 0)) { if (!loadDictionary(dictArray[ii], msgIfDictAbsent)) { loadFailed = OFTrue; } } free(dictArray[ii]); } free(dictArray); } } return (loadFailed) ? (OFFalse) : (OFTrue); } void DcmDataDictionary::addEntry(DcmDictEntry* e) { if (e->isRepeating()) { /* * Find the best position in repeating tag list * Existing entries are replaced if the ranges and repetition * constraints are the same. * If a range represents a subset of an existing range then it * will be placed before it in the list. This ensures that a * search will find the subset rather than the superset. * Otherwise entries are appended to the end of the list. */ OFBool inserted = OFFalse; DcmDictEntryListIterator iter(repDict.begin()); DcmDictEntryListIterator last(repDict.end()); for (; !inserted && iter != last; ++iter) { if (e->setEQ(**iter)) { /* replace the old entry with the new */ DcmDictEntry *old = *iter; *iter = e; #ifdef PRINT_REPLACED_DICTIONARY_ENTRIES DCMDATA_WARN("replacing " << *old); #endif delete old; inserted = OFTrue; } else if (e->subset(**iter)) { /* e is a subset of the current list position, insert before */ repDict.insert(iter, e); inserted = OFTrue; } } if (!inserted) { /* insert at end */ repDict.push_back(e); inserted = OFTrue; } } else { hashDict.put(e); } } void DcmDataDictionary::deleteEntry(const DcmDictEntry& entry) { DcmDictEntry* e = NULL; e = OFconst_cast(DcmDictEntry *, findEntry(entry)); if (e != NULL) { if (e->isRepeating()) { repDict.remove(e); delete e; } else { hashDict.del(entry.getKey(), entry.getPrivateCreator()); } } } const DcmDictEntry* DcmDataDictionary::findEntry(const DcmDictEntry& entry) const { const DcmDictEntry* e = NULL; if (entry.isRepeating()) { OFBool found = OFFalse; DcmDictEntryListConstIterator iter(repDict.begin()); DcmDictEntryListConstIterator last(repDict.end()); for (; !found && iter != last; ++iter) { if (entry.setEQ(**iter)) { found = OFTrue; e = *iter; } } } else { e = hashDict.get(entry, entry.getPrivateCreator()); } return e; } const DcmDictEntry* DcmDataDictionary::findEntry(const DcmTagKey& key, const char *privCreator) const { /* search first in the normal tags dictionary and if not found * then search in the repeating tags list. */ const DcmDictEntry* e = NULL; e = hashDict.get(key, privCreator); if (e == NULL) { /* search in the repeating tags dictionary */ OFBool found = OFFalse; DcmDictEntryListConstIterator iter(repDict.begin()); DcmDictEntryListConstIterator last(repDict.end()); for (; !found && iter != last; ++iter) { if ((*iter)->contains(key, privCreator)) { found = OFTrue; e = *iter; } } } return e; } const DcmDictEntry* DcmDataDictionary::findEntry(const char *name) const { const DcmDictEntry* e = NULL; const DcmDictEntry* ePrivate = NULL; /* search first in the normal tags dictionary and if not found * then search in the repeating tags list. */ DcmHashDictIterator iter; for (iter = hashDict.begin(); (e == NULL) && (iter != hashDict.end()); ++iter) { if ((*iter)->contains(name)) { e = *iter; if (e->getGroup() % 2) { /* tag is a private tag - continue search to be sure to find non-private keys first */ if (!ePrivate) ePrivate = e; e = NULL; } } } if (e == NULL) { /* search in the repeating tags dictionary */ OFBool found = OFFalse; DcmDictEntryListConstIterator iter2(repDict.begin()); DcmDictEntryListConstIterator last(repDict.end()); for (; !found && iter2 != last; ++iter2) { if ((*iter2)->contains(name)) { found = OFTrue; e = *iter2; } } } if (e == NULL && ePrivate != NULL) { /* no standard key found - use the first private key found */ e = ePrivate; } return e; } /* ================================================================== */ GlobalDcmDataDictionary::GlobalDcmDataDictionary() : dataDict(NULL) #ifdef WITH_THREADS , dataDictLock() #endif { } GlobalDcmDataDictionary::~GlobalDcmDataDictionary() { /* No threads may be active any more, so no locking needed */ delete dataDict; } void GlobalDcmDataDictionary::createDataDict() { /* Make sure only one thread tries to initialize the dictionary */ #ifdef WITH_THREADS dataDictLock.wrlock(); #endif #ifdef DONT_LOAD_EXTERNAL_DICTIONARIES const OFBool loadExternal = OFFalse; #else const OFBool loadExternal = OFTrue; #endif /* Make sure no other thread managed to create the dictionary * before we got our write lock. */ if (!dataDict) dataDict = new DcmDataDictionary(OFTrue /*loadBuiltin*/, loadExternal); #ifdef WITH_THREADS dataDictLock.unlock(); #endif } const DcmDataDictionary& GlobalDcmDataDictionary::rdlock() { #ifdef WITH_THREADS dataDictLock.rdlock(); #endif if (!dataDict) { /* dataDictLock must not be locked during createDataDict() */ #ifdef WITH_THREADS dataDictLock.unlock(); #endif createDataDict(); #ifdef WITH_THREADS dataDictLock.rdlock(); #endif } return *dataDict; } DcmDataDictionary& GlobalDcmDataDictionary::wrlock() { #ifdef WITH_THREADS dataDictLock.wrlock(); #endif if (!dataDict) { /* dataDictLock must not be locked during createDataDict() */ #ifdef WITH_THREADS dataDictLock.unlock(); #endif createDataDict(); #ifdef WITH_THREADS dataDictLock.wrlock(); #endif } return *dataDict; } void GlobalDcmDataDictionary::unlock() { #ifdef WITH_THREADS dataDictLock.unlock(); #endif } OFBool GlobalDcmDataDictionary::isDictionaryLoaded() { OFBool result = rdlock().isDictionaryLoaded(); unlock(); return result; } void GlobalDcmDataDictionary::clear() { wrlock().clear(); unlock(); } // Function by the Orthanc project to load a dictionary from a memory // buffer, which is necessary in sandboxed environments. This is an // adapted version of DcmDataDictionary::loadDictionary(). #include <boost/noncopyable.hpp> struct OrthancLinesIterator; // This plain old C class is implemented in "../../Core/Toolbox.h" OrthancLinesIterator* OrthancLinesIterator_Create(const std::string& content); bool OrthancLinesIterator_GetLine(std::string& target, const OrthancLinesIterator* iterator); void OrthancLinesIterator_Next(OrthancLinesIterator* iterator); void OrthancLinesIterator_Free(OrthancLinesIterator* iterator); class LinesIterator : public boost::noncopyable { private: OrthancLinesIterator* iterator_; public: LinesIterator(const std::string& content) : iterator_(NULL) { iterator_ = OrthancLinesIterator_Create(content); } ~LinesIterator() { if (iterator_ != NULL) { OrthancLinesIterator_Free(iterator_); iterator_ = NULL; } } bool GetLine(std::string& target) const { if (iterator_ != NULL) { return OrthancLinesIterator_GetLine(target, iterator_); } else { return false; } } void Next() { if (iterator_ != NULL) { OrthancLinesIterator_Next(iterator_); } } }; OFBool DcmDataDictionary::loadFromMemory(const std::string& content, OFBool errorIfAbsent) { int lineNumber = 0; char* lineFields[DCM_MAXDICTFIELDS + 1]; int fieldsPresent; DcmDictEntry* e; int errorsEncountered = 0; OFBool errorOnThisLine = OFFalse; int i; DcmTagKey key, upperKey; DcmDictRangeRestriction groupRestriction = DcmDictRange_Unspecified; DcmDictRangeRestriction elementRestriction = DcmDictRange_Unspecified; DcmVR vr; char* vrName; char* tagName; char* privCreator; int vmMin, vmMax = 1; const char* standardVersion; LinesIterator iterator(content); std::string line; while (iterator.GetLine(line)) { iterator.Next(); if (line.size() >= DCM_MAXDICTLINESIZE) { DCMDATA_ERROR("DcmDataDictionary: Too long line: " << line); continue; } lineNumber++; if (onlyWhitespace(line.c_str())) { continue; /* ignore this line */ } if (isaCommentLine(line.c_str())) { continue; /* ignore this line */ } errorOnThisLine = OFFalse; /* fields are tab separated */ fieldsPresent = splitFields(line.c_str(), lineFields, DCM_MAXDICTFIELDS, DCM_DICT_FIELD_SEPARATOR_CHAR); /* initialize dict entry fields */ vrName = NULL; tagName = NULL; privCreator = NULL; vmMin = vmMax = 1; standardVersion = "DICOM"; switch (fieldsPresent) { case 0: case 1: case 2: DCMDATA_ERROR("DcmDataDictionary: " << "too few fields (line " << lineNumber << ")"); errorOnThisLine = OFTrue; break; default: DCMDATA_ERROR("DcmDataDictionary: " << "too many fields (line " << lineNumber << "): "); errorOnThisLine = OFTrue; break; case 5: stripWhitespace(lineFields[4]); standardVersion = lineFields[4]; /* drop through to next case label */ case 4: /* the VM field is present */ if (!parseVMField(lineFields[3], vmMin, vmMax)) { DCMDATA_ERROR("DcmDataDictionary: " << "bad VM field (line " << lineNumber << "): " << lineFields[3]); errorOnThisLine = OFTrue; } /* drop through to next case label */ case 3: if (!parseWholeTagField(lineFields[0], key, upperKey, groupRestriction, elementRestriction, privCreator)) { DCMDATA_ERROR("DcmDataDictionary: " << "bad Tag field (line " << lineNumber << "): " << lineFields[0]); errorOnThisLine = OFTrue; } else { /* all is OK */ vrName = lineFields[1]; stripWhitespace(vrName); tagName = lineFields[2]; stripWhitespace(tagName); } } if (!errorOnThisLine) { /* check the VR Field */ vr.setVR(vrName); if (vr.getEVR() == EVR_UNKNOWN) { DCMDATA_ERROR("DcmDataDictionary: " << "bad VR field (line " << lineNumber << "): " << vrName); errorOnThisLine = OFTrue; } } if (!errorOnThisLine) { e = new DcmDictEntry( key.getGroup(), key.getElement(), upperKey.getGroup(), upperKey.getElement(), vr, tagName, vmMin, vmMax, standardVersion, OFTrue, privCreator); e->setGroupRangeRestriction(groupRestriction); e->setElementRangeRestriction(elementRestriction); addEntry(e); } for (i = 0; i < fieldsPresent; i++) { free(lineFields[i]); lineFields[i] = NULL; } delete[] privCreator; if (errorOnThisLine) { errorsEncountered++; } } /* return OFFalse in case of errors and set internal state accordingly */ if (errorsEncountered == 0) { dictionaryLoaded = OFTrue; return OFTrue; } else { dictionaryLoaded = OFFalse; return OFFalse; } }