3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
8 * Full author contact details are available in file CREDITS.
10 * Record changes in a paragraph.
19 #include "support/LAssert.h"
20 #include "support/LOstream.h"
22 using namespace lyx::support;
28 bool operator==(Change const & l, Change const & r)
30 return l.type == r.type && l.author == r.author
31 && l.changetime == r.changetime;
35 bool operator!=(Change const & l, Change const & r)
41 bool operator==(Changes::Range const & r1, Changes::Range const & r2)
43 return r1.start == r2.start && r1.end == r2.end;
47 bool operator!=(Changes::Range const & r1, Changes::Range const & r2)
53 bool Changes::Range::contains(Range const & r) const
55 return r.start >= start && r.end <= end;
59 bool Changes::Range::contained(Range const & r) const
61 return r.contains(*this);
65 bool Changes::Range::contains(pos_type pos) const
67 return pos >= start && pos < end;
71 bool Changes::Range::loose_contains(pos_type pos) const
73 return pos >= start && pos <= end;
77 bool Changes::Range::intersects(Range const & r) const
79 return contained(r) || contains(r)
80 || contains(r.start) || contains(r.end);
84 Changes::Changes(Change::Type type)
95 Changes::Changes(Changes const & c)
101 void Changes::record(Change change, pos_type pos)
103 if (lyxerr.debugging(Debug::CHANGES)) {
104 lyxerr[Debug::CHANGES] << "record " << change.type
105 << " at pos " << pos << " with total "
106 << table_.size() << " changes." << endl;
109 switch (change.type) {
110 case Change::INSERTED:
113 case Change::DELETED:
116 case Change::UNCHANGED:
117 set(Change::UNCHANGED, pos);
123 void Changes::set(Change change, pos_type pos)
125 set(change, pos, pos + 1);
129 void Changes::set(Change::Type type, pos_type pos)
131 set(type, pos, pos + 1);
135 void Changes::set(Change::Type type, pos_type start, pos_type end)
137 set(Change(type), start, end);
141 void Changes::set(Change change, pos_type start, pos_type end)
143 ChangeTable::iterator it = table_.begin();
145 if (lyxerr.debugging(Debug::CHANGES)) {
146 lyxerr[Debug::CHANGES] << "changeset of " << change.type
147 << " author " << change.author << " time " << change.changetime
148 << " in range " << start << "," << end << endl;
151 Range const new_range(start, end);
153 // remove all sub-ranges
154 for (; it != table_.end();) {
155 if (new_range != it->range && it->range.contained(new_range)) {
156 if (lyxerr.debugging(Debug::CHANGES)) {
157 lyxerr[Debug::CHANGES] << "Removing subrange "
158 << it->range.start << "," << it->range.end << endl;
160 it = table_.erase(it);
167 ChangeTable::iterator itend = table_.end();
169 // find a super-range
170 for (; it != itend; ++it) {
171 if (it->range.contains(new_range))
176 lyxerr[Debug::CHANGES] << "Inserting change at end" << endl;
177 table_.push_back(ChangeRange(start, end, change));
182 if (change.type == it->change.type) {
183 lyxerr[Debug::CHANGES] << "Change set already." << endl;
190 if (lyxerr.debugging(Debug::CHANGES)) {
191 lyxerr[Debug::CHANGES] << "Using change of type " << c.change.type
192 << " over " << c.range.start << "," << c.range.end << endl;
196 if (c.range.start < start) {
197 it = table_.insert(it, ChangeRange(c.range.start, start, c.change));
198 if (lyxerr.debugging(Debug::CHANGES)) {
199 lyxerr[Debug::CHANGES] << "Splitting head of type " << c.change.type
200 << " over " << c.range.start << "," << start << endl;
205 // reset this as new type
206 it->range.start = start;
209 lyxerr[Debug::CHANGES] << "Resetting to new change" << endl;
212 if (c.range.end > end) {
214 table_.insert(it, ChangeRange(end, c.range.end, c.change));
215 if (lyxerr.debugging(Debug::CHANGES)) {
216 lyxerr[Debug::CHANGES] << "Splitting tail of type " << c.change.type
217 << " over " << end << "," << c.range.end << endl;
226 void Changes::erase(pos_type pos)
228 ChangeTable::iterator it = table_.begin();
229 ChangeTable::iterator end = table_.end();
233 for (; it != end; ++it) {
234 Range & range(it->range);
236 if (lyxerr.debugging(Debug::CHANGES)) {
237 lyxerr[Debug::CHANGES] << "era:Range of type " << it->change.type << " is "
238 << it->range.start << "," << it->range.end << endl;
241 if (range.contains(pos)) {
257 void Changes::del(Change change, ChangeTable::size_type pos)
259 // this case happens when building from .lyx
260 if (table_.empty()) {
265 ChangeTable::iterator it = table_.begin();
267 for (; it != table_.end(); ++it) {
268 Range & range(it->range);
270 if (range.contains(pos)) {
271 if (it->change.type != Change::INSERTED) {
277 } else if (range.loose_contains(pos) && it + 1 == table_.end()) {
278 // this case happens when building from .lyx
286 void Changes::add(Change change, ChangeTable::size_type pos)
288 ChangeTable::iterator it = table_.begin();
289 ChangeTable::iterator end = table_.end();
293 for (; it != end; ++it) {
294 Range & range(it->range);
296 if (!found && range.loose_contains(pos)) {
298 if (lyxerr.debugging(Debug::CHANGES)) {
299 lyxerr[Debug::CHANGES] << "Found range of "
300 << range.start << "," << range.end << endl;
315 Change const Changes::lookupFull(pos_type pos) const
317 if (!table_.size()) {
318 if (lyxerr.debugging(Debug::CHANGES))
319 lyxerr[Debug::CHANGES] << "Empty, type is " << empty_type_ << endl;
320 return Change(empty_type_);
323 ChangeTable::const_iterator it = table_.begin();
324 ChangeTable::const_iterator end = table_.end();
326 for (; it != end; ++it) {
327 if (it->range.contains(pos))
333 return Change(Change::UNCHANGED);
337 Change::Type Changes::lookup(pos_type pos) const
339 if (!table_.size()) {
340 if (lyxerr.debugging(Debug::CHANGES))
341 lyxerr[Debug::CHANGES] << "Empty, type is " << empty_type_ << endl;
345 ChangeTable::const_iterator it = table_.begin();
346 ChangeTable::const_iterator end = table_.end();
348 for (; it != end; ++it) {
349 if (it->range.contains(pos))
350 return it->change.type;
355 return Change::UNCHANGED;
359 bool Changes::isChange(pos_type start, pos_type end) const
361 if (!table_.size()) {
362 if (lyxerr.debugging(Debug::CHANGES))
363 lyxerr[Debug::CHANGES] << "Empty, type is " << empty_type_ << endl;
364 return empty_type_ != Change::UNCHANGED;
367 ChangeTable::const_iterator it = table_.begin();
368 ChangeTable::const_iterator itend = table_.end();
370 for (; it != itend; ++it) {
371 if (lyxerr.debugging(Debug::CHANGES)) {
372 lyxerr[Debug::CHANGES] << "Looking for " << start << ","
373 << end << " in " << it->range.start << ","
374 << it->range.end << "of type " << it->change.type << endl;
377 if (it->range.intersects(Range(start, end))
378 && it->change.type != Change::UNCHANGED) {
379 if (lyxerr.debugging(Debug::CHANGES)) {
380 lyxerr[Debug::CHANGES] << "Found intersection of "
381 << start << "," << end << " with "
382 << it->range.start << "," << it->range.end
383 << " of type " << it->change.type << endl;
393 bool Changes::isChangeEdited(lyx::pos_type start, lyx::pos_type end) const
395 if (!table_.size()) {
396 if (lyxerr.debugging(Debug::CHANGES))
397 lyxerr[Debug::CHANGES] << "Empty, type is " << empty_type_ << endl;
398 return empty_type_ != Change::INSERTED;
401 ChangeTable::const_iterator it = table_.begin();
402 ChangeTable::const_iterator itend = table_.end();
404 for (; it != itend; ++it) {
405 if (it->range.intersects(Range(start, end ? end - 1 : 0))
406 && it->change.type != Change::INSERTED) {
414 void Changes::merge()
416 if (lyxerr.debugging(Debug::CHANGES))
417 lyxerr[Debug::CHANGES] << "Starting merge" << endl;
419 ChangeTable::iterator it = table_.begin();
421 while (it != table_.end()) {
422 if (lyxerr.debugging(Debug::CHANGES)) {
423 lyxerr[Debug::CHANGES] << "Range of type " << it->change.type << " is "
424 << it->range.start << "," << it->range.end << endl;
427 if (it->range.start == it->range.end) {
428 if (lyxerr.debugging(Debug::CHANGES)) {
429 lyxerr[Debug::CHANGES] << "Removing empty range for pos "
430 << it->range.start << endl;
439 if (it + 1 == table_.end())
442 if (it->change == (it + 1)->change) {
443 if (lyxerr.debugging(Debug::CHANGES)) {
444 lyxerr[Debug::CHANGES] << "Merging equal ranges "
445 << it->range.start << "," << it->range.end
446 << " and " << (it + 1)->range.start << ","
447 << (it + 1)->range.end << endl;
450 (it + 1)->range.start = it->range.start;
460 lyxerr[Debug::CHANGES] << "Merge ended" << endl;
465 void Changes::check() const
467 ChangeTable::const_iterator it = table_.begin();
468 ChangeTable::const_iterator end = table_.end();
470 bool dont_assert(true);
472 lyxerr[Debug::CHANGES] << "Changelist:" << endl;
473 for (; it != end; ++it) {
474 if (lyxerr.debugging(Debug::CHANGES)) {
475 lyxerr[Debug::CHANGES] << "Range of type " << it->change.type << " is "
476 << it->range.start << "," << it->range.end << " author "
477 << it->change.author << " time " << it->change.changetime << endl;
483 Range const & range(it->range);
484 Range const & next((it + 1)->range);
485 if (range.end != next.start)
489 if (lyxerr.debugging(Debug::CHANGES))
490 lyxerr[Debug::CHANGES] << "End" << endl;
496 int Changes::latexMarkChange(std::ostream & os, Change::Type old, Change::Type change)
501 string const start("\\changestart{}");
502 string const end("\\changeend{}");
503 string const son("\\overstrikeon{}");
504 string const soff("\\overstrikeoff{}");
508 if (old == Change::DELETED) {
510 column += soff.length();
514 case Change::UNCHANGED:
516 column += end.length();
519 case Change::DELETED:
520 if (old == Change::UNCHANGED) {
522 column += start.length();
525 column += son.length();
528 case Change::INSERTED:
529 if (old == Change::UNCHANGED) {
531 column += start.length();
540 void Changes::lyxMarkChange(std::ostream & os, int & column, lyx::time_type curtime,
541 Change const & old, Change const & change)
548 switch (change.type) {
549 case Change::UNCHANGED:
550 os << "\n\\change_unchanged\n";
553 case Change::DELETED: {
554 lyx::time_type t(change.changetime);
557 os << "\n\\change_deleted " << change.author
563 case Change::INSERTED:
564 lyx::time_type t(change.changetime);
567 os << "\n\\change_inserted " << change.author