2 * © 2008 by David Roden <droden@gmail.com>
7 #include "CollectionReader.h"
8 #include "GlobalSettings.h"
10 CollectionReader::CollectionReader(ReaderInput* readerInput) {
11 this->readerInput = readerInput;
15 CollectionReader::~CollectionReader() {
18 bool CollectionReader::isLineBreakPresent() {
19 size_t indexOfLineBreak = growingBuffer.indexOf('\n');
20 GlobalSettings::isVerbose() && (indexOfLineBreak != (size_t) -1) && fprintf(stderr, "[%s:%d] found line break at %d.\n", __FILE__, __LINE__, indexOfLineBreak);
21 GlobalSettings::isVerbose() && (indexOfLineBreak == (size_t) -1) && fprintf(stderr, "[%s:%d] could not find line break.\n", __FILE__, __LINE__);
22 return indexOfLineBreak != (size_t) -1;
25 StringTag* CollectionReader::readStringTag(bool header) {
28 if (!ensureBufferCapacity(2)) {
31 growingBuffer.read(&unknown, 2);
34 if (!ensureBufferCapacity(1)) {
37 growingBuffer.read(&tagName, 1);
38 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] read tag name %d.\n", __FILE__, __LINE__, tagName);
39 uint16_t tagLength = 0;
40 if (!ensureBufferCapacity(2)) {
43 growingBuffer.read(&tagLength, 2);
44 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] read tag length %d.\n", __FILE__, __LINE__, tagLength);
45 char* tagValue = (char*) malloc(tagLength + 1);
46 if (!ensureBufferCapacity(tagLength)) {
49 growingBuffer.read(tagValue, tagLength);
50 tagValue[tagLength] = '\0';
51 StringTag* stringTag = new StringTag(tagName, tagValue);
56 BlobTag* CollectionReader::readBlobTag(bool header) {
59 if (!ensureBufferCapacity(2)) {
62 growingBuffer.read(&unknown, 2);
65 if (!ensureBufferCapacity(1)) {
68 growingBuffer.read(&tagName, 1);
69 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] read tag name %d.\n", __FILE__, __LINE__, tagName);
70 uint32_t tagLength = 0;
71 if (!ensureBufferCapacity(4)) {
74 growingBuffer.read(&tagLength, 4);
75 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] read tag length %d.\n", __FILE__, __LINE__, tagLength);
76 void* tagValue = (char*) malloc(tagLength);
77 if (!ensureBufferCapacity(tagLength)) {
80 growingBuffer.read(tagValue, tagLength);
81 BlobTag* blobTag = new BlobTag(tagName, tagValue, tagLength);
86 HashTag* CollectionReader::readHashTag() {
87 if (!ensureBufferCapacity(1)) {
91 growingBuffer.read(&tagId, 1);
92 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] read tag id %d.\n", __FILE__, __LINE__, tagId);
93 if (!ensureBufferCapacity(16)) {
97 growingBuffer.read(hash, 16);
98 return new HashTag(tagId, hash);
101 ED2KLink* CollectionReader::getNextLink() {
102 if (readerInput->isEOF() && !growingBuffer.getRemaining()) {
103 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] readInput EOF reached.\n", __FILE__, __LINE__);
107 identifyCollectionType();
108 if (readerInput->isEOF() && !growingBuffer.getRemaining()) {
109 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] readInput EOF reached.\n", __FILE__, __LINE__);
113 if (isTextCollection) {
114 while (!readerInput->isEOF() && !isLineBreakPresent()) {
117 if (readerInput->isEOF() && !growingBuffer.getRemaining()) {
118 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] readInput EOF reached.\n", __FILE__, __LINE__);
121 size_t indexOfLineBreak = growingBuffer.indexOf('\n');
123 if (indexOfLineBreak == (size_t) -1) {
124 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] could not find line break, using remainder of file.\n", __FILE__, __LINE__);
125 indexOfLineBreak = growingBuffer.getRemaining();
126 line = (char*) malloc(indexOfLineBreak + 1);
127 growingBuffer.read(line, indexOfLineBreak);
128 line[indexOfLineBreak] = '\0';
130 line = (char*) malloc(indexOfLineBreak + 1);
131 growingBuffer.read(line, indexOfLineBreak + 1);
132 if (line[indexOfLineBreak] == '\n') {
133 line[indexOfLineBreak] = '\0';
135 if (line[indexOfLineBreak - 1] == '\r') {
136 line[indexOfLineBreak - 1] = '\0';
140 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] got line: %s\n", __FILE__, __LINE__, line);
141 ED2KLink* ed2kLink = ED2KLink::parseED2KLink(line);
147 if (!ensureBufferCapacity(4)) {
150 uint32_t headerTagCount = 0;
151 growingBuffer.read(&headerTagCount, 4);
152 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] will read %d header tags.\n", __FILE__, __LINE__, headerTagCount);
153 for (uint32_t headerTagIndex = 0; headerTagIndex < headerTagCount; headerTagIndex++) {
155 if (!ensureBufferCapacity(1)) {
158 growingBuffer.read(&tagType, 1);
159 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] read tag type %d.\n", __FILE__, __LINE__, tagType);
160 if (tagType == 0x02) {
161 StringTag* stringTag = readStringTag(true);
162 if (stringTag->getId() == 0x01) {
163 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] FT_FILENAME: “%s”\n", __FILE__, __LINE__, (char*) stringTag->getValue());
164 } else if (stringTag->getId() == 0x31) {
165 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] FT_COLLECTIONAUTHOR: “%s”\n", __FILE__, __LINE__, (char*) stringTag->getValue());
167 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] unknown string in header: “%s”\n", __FILE__, __LINE__, (char*) stringTag->getValue());
169 } else if (tagType == 0x07) {
170 BlobTag* blobTag = readBlobTag(true);
171 if (blobTag->getId() == 0x32) {
172 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] FT_COLLECTIONAUTHORKEY: %d bytes.\n", __FILE__, __LINE__, blobTag->getSize());
174 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] unknown block in header: %d bytes.\n", __FILE__, __LINE__, blobTag->getSize());
177 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] unknown tag type: %02x.\n", __FILE__, __LINE__, tagType);
180 fileCollectionCount = 0;
181 if (!ensureBufferCapacity(4)) {
184 growingBuffer.read(&fileCollectionCount, 4);
185 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] will read %d files.\n", __FILE__, __LINE__, fileCollectionCount);
186 collectionFileIndex = 0;
189 if (collectionFileIndex < fileCollectionCount) {
191 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] reached end of collection.\n", __FILE__, __LINE__);
196 bool CollectionReader::ensureBufferCapacity(size_t byteCount) {
197 while (!readerInput->isEOF() && (growingBuffer.getRemaining() < byteCount)) {
198 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] only %d bytes remaning, need at least %d, reading more bytes.\n", __FILE__, __LINE__, growingBuffer.getRemaining(), byteCount);
201 if (readerInput->isEOF() && (growingBuffer.getRemaining() < byteCount)) {
202 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] need %d more bytes, but file is EOF.\n", __FILE__, __LINE__, (byteCount - growingBuffer.getRemaining()));
208 void CollectionReader::readMoreBytes() {
212 readBytes = readerInput->read(buffer, 1024);
213 growingBuffer.write(buffer, readBytes);
216 void CollectionReader::identifyCollectionType() {
219 readBytes = readerInput->read(&version, 4);
220 if ((readBytes < 4) || readerInput->isEOF()) {
223 if (version == 0x01) {
224 isTextCollection = false;
226 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] identified binary collection, version 1\n", __FILE__, __LINE__);
227 } else if (version == 0x02) {
228 isTextCollection = false;
230 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] identified binary collection, version 2\n", __FILE__, __LINE__);
231 } else if (!strncmp("ed2k", (char*) &version, 4)) {
232 isTextCollection = true;
233 growingBuffer.write(&version, 4);
235 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] identified text collection\n", __FILE__, __LINE__);
237 GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] could not identify collection!\n", __FILE__, __LINE__);