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Diffstat (limited to 'kaldi_io/src/kaldi/util/kaldi-table-inl.h')
-rw-r--r-- | kaldi_io/src/kaldi/util/kaldi-table-inl.h | 2246 |
1 files changed, 0 insertions, 2246 deletions
diff --git a/kaldi_io/src/kaldi/util/kaldi-table-inl.h b/kaldi_io/src/kaldi/util/kaldi-table-inl.h deleted file mode 100644 index 6b73c88..0000000 --- a/kaldi_io/src/kaldi/util/kaldi-table-inl.h +++ /dev/null @@ -1,2246 +0,0 @@ -// util/kaldi-table-inl.h - -// Copyright 2009-2011 Microsoft Corporation -// 2013 Johns Hopkins University (author: Daniel Povey) - -// See ../../COPYING for clarification regarding multiple authors -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY -// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED -// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, -// MERCHANTABLITY OR NON-INFRINGEMENT. -// See the Apache 2 License for the specific language governing permissions and -// limitations under the License. - - -#ifndef KALDI_UTIL_KALDI_TABLE_INL_H_ -#define KALDI_UTIL_KALDI_TABLE_INL_H_ - -#include <algorithm> -#include "util/kaldi-io.h" -#include "util/text-utils.h" -#include "util/stl-utils.h" // for StringHasher. - - -namespace kaldi { - -/// \addtogroup table_impl_types -/// @{ - -template<class Holder> class SequentialTableReaderImplBase { - public: - typedef typename Holder::T T; - // note that Open takes rxfilename not rspecifier. - virtual bool Open(const std::string &rxfilename) = 0; - virtual bool Done() const = 0; - virtual bool IsOpen() const = 0; - virtual std::string Key() = 0; - virtual const T &Value() = 0; - virtual void FreeCurrent() = 0; - virtual void Next() = 0; - virtual bool Close() = 0; - SequentialTableReaderImplBase() { } - virtual ~SequentialTableReaderImplBase() { } - private: - KALDI_DISALLOW_COPY_AND_ASSIGN(SequentialTableReaderImplBase); -}; - - -// This is the implementation for SequentialTableReader -// when it's actually a script file. -template<class Holder> class SequentialTableReaderScriptImpl: - public SequentialTableReaderImplBase<Holder> { - public: - typedef typename Holder::T T; - - SequentialTableReaderScriptImpl(): state_(kUninitialized) { } - - virtual bool Open(const std::string &rspecifier) { - if (state_ != kUninitialized) - if (! Close()) // call Close() yourself to suppress this exception. - KALDI_ERR << "TableReader::Open, error closing previous input: " - << "rspecifier was " << rspecifier_; - bool binary; - rspecifier_ = rspecifier; - RspecifierType rs = ClassifyRspecifier(rspecifier, &script_rxfilename_, - &opts_); - KALDI_ASSERT(rs == kScriptRspecifier); - if (!script_input_.Open(script_rxfilename_, &binary)) { // Failure on Open - KALDI_WARN << "Failed to open script file " - << PrintableRxfilename(script_rxfilename_); - state_ = kUninitialized; - return false; - } else { // Open succeeded. - if (binary) { // script file should not be binary file.. - state_ = kError; // bad script file. - script_input_.Close(); - return false; - } else { - state_ = kFileStart; - Next(); - if (state_ == kError) { - script_input_.Close(); - return false; - } - if (opts_.permissive) { // Next() will have preloaded. - KALDI_ASSERT(state_ == kLoadSucceeded || state_ == kEof); - } else { - KALDI_ASSERT(state_ == kHaveScpLine || state_ == kEof); - } - return true; // Success. - } - } - } - - virtual bool IsOpen() const { - switch (state_) { - case kEof: case kError: case kHaveScpLine: case kLoadSucceeded: case kLoadFailed: return true; - case kUninitialized: return false; - default: KALDI_ERR << "IsOpen() called on invalid object."; // kFileStart is not valid - // state for user to call something on. - return false; - } - } - - virtual bool Done() const { - switch (state_) { - case kHaveScpLine: return false; - case kLoadSucceeded: case kLoadFailed: return false; - // These cases are because we want LoadCurrent() - // to be callable after Next() and to not change the Done() status [only Next() should change - // the Done() status]. - case kEof: case kError: return true; // Error condition, like Eof, counts as Done(); the destructor - // or Close() will inform the user of the error. - default: KALDI_ERR << "Done() called on TableReader object at the wrong time."; - return false; - } - } - - virtual std::string Key() { - // Valid to call this whenever Done() returns false. - switch (state_) { - case kHaveScpLine: case kLoadSucceeded: case kLoadFailed: break; - default: - // coding error. - KALDI_ERR << "Key() called on TableReader object at the wrong time."; - } - return key_; - } - const T &Value() { - StateType orig_state = state_; - if (state_ == kHaveScpLine) LoadCurrent(); // Takes - // state_ to kLoadSucceeded or kLoadFailed. - if (state_ == kLoadFailed) { // this can happen due to - // a file listed in an scp file not existing, or - // read failure, failure of a command, etc. - if (orig_state == kHaveScpLine) - KALDI_ERR << "TableReader: failed to load object from " - << PrintableRxfilename(data_rxfilename_) - << " (to suppress this error, add the permissive " - << "(p, ) option to the rspecifier."; - - else // orig_state_ was kLoadFailed, which only could have happened - // if the user called FreeCurrent(). - KALDI_ERR << "TableReader: you called Value() after FreeCurrent()."; - } else if (state_ != kLoadSucceeded) { - // This would be a coding error. - KALDI_ERR << "TableReader: Value() called at the wrong time."; - } - return holder_.Value(); - } - void FreeCurrent() { - if (state_ == kLoadSucceeded) { - holder_.Clear(); - state_ = kLoadFailed; - } else { - KALDI_WARN << "TableReader: FreeCurrent called at the wrong time."; - } - } - void Next() { - while (1) { - NextScpLine(); - if (Done()) return; - if (opts_.permissive) { - // Permissive mode means, when reading scp files, we treat keys whose scp entry - // cannot be read as nonexistent. This means trying to read. - if (LoadCurrent()) return; // Success. - // else try the next scp line. - } else { - return; // We go the next key; Value() will crash if we can't - // read the scp line. - } - } - } - - virtual bool Close() { - // Close() will succeed if the stream was not in an error - // state. To clean up, it also closes the Input objects if - // they're open. - if (script_input_.IsOpen()) - script_input_.Close(); - if (data_input_.IsOpen()) - data_input_.Close(); - if (state_ == kLoadSucceeded) - holder_.Clear(); - if (!this->IsOpen()) - KALDI_ERR << "Close() called on input that was not open."; - StateType old_state = state_; - state_ = kUninitialized; - if (old_state == kError) { - if (opts_.permissive) { - KALDI_WARN << "Close() called on scp file with read error, ignoring the " - "error because permissive mode specified."; - return true; - } else return false; // User will do something with the error status. - } else return true; - } - - virtual ~SequentialTableReaderScriptImpl() { - if (state_ == kError) - KALDI_ERR << "TableReader: reading script file failed: from scp " - << PrintableRxfilename(script_rxfilename_); - // If you don't want this exception to be thrown you can - // call Close() and check the status. - if (state_ == kLoadSucceeded) - holder_.Clear(); - } - private: - bool LoadCurrent() { - // Attempts to load object whose rxfilename is on the current scp line. - if (state_ != kHaveScpLine) - KALDI_ERR << "TableReader: LoadCurrent() called at the wrong time."; - bool ans; - // note, NULL means it doesn't read the binary-mode header - if (Holder::IsReadInBinary()) ans = data_input_.Open(data_rxfilename_, NULL); - else ans = data_input_.OpenTextMode(data_rxfilename_); - if (!ans) { - // May want to make this warning a VLOG at some point - KALDI_WARN << "TableReader: failed to open file " - << PrintableRxfilename(data_rxfilename_); - state_ = kLoadFailed; - return false; - } else { - if (holder_.Read(data_input_.Stream())) { - state_ = kLoadSucceeded; - return true; - } else { // holder_ will not contain data. - KALDI_WARN << "TableReader: failed to load object from " - << PrintableRxfilename(data_rxfilename_); - state_ = kLoadFailed; - return false; - } - } - } - - // Reads the next line in the script file. - void NextScpLine() { - switch (state_) { - case kLoadSucceeded: holder_.Clear(); break; - case kHaveScpLine: case kLoadFailed: case kFileStart: break; - default: - // No other states are valid to call Next() from. - KALDI_ERR << "Reading script file: Next called wrongly."; - } - std::string line; - if (getline(script_input_.Stream(), line)) { - SplitStringOnFirstSpace(line, &key_, &data_rxfilename_); - if (!key_.empty() && !data_rxfilename_.empty()) { - // Got a valid line. - state_ = kHaveScpLine; - } else { - // Got an invalid line. - state_ = kError; // we can't make sense of this - // scp file and will now die. - } - } else { - state_ = kEof; // nothing more in the scp file. - // Might as well close the input streams as don't need them. - script_input_.Close(); - if (data_input_.IsOpen()) - data_input_.Close(); - } - } - - - Input script_input_; // Input object for the .scp file - Input data_input_; // Input object for the entries in - // the script file. - Holder holder_; // Holds the object. - bool binary_; // Binary-mode archive. - std::string key_; - std::string rspecifier_; - std::string script_rxfilename_; // of the script file. - RspecifierOptions opts_; // options. - std::string data_rxfilename_; // of the file we're reading. - enum StateType { - // [The state of the reading process] [does holder_ [is script_inp_ - // have object] open] - kUninitialized, // Uninitialized or closed. no no - kEof, // We did Next() and found eof in script file. no no - kError, // Some other error no yes - kHaveScpLine, // Just called Open() or Next() and have a no yes - // line of the script file but no data. - kLoadSucceeded, // Called LoadCurrent() and it succeeded. yes yes - kLoadFailed, // Called LoadCurrent() and it failed, no yes - // or the user called FreeCurrent().. note, - // if when called by user we are in this state, - // it means the user called FreeCurrent(). - kFileStart, // [state we only use internally] no yes - } state_; - private: -}; - - -// This is the implementation for SequentialTableReader -// when it's an archive. Note that the archive format is: -// key1 [space] object1 key2 [space] -// object2 ... eof. -// "object1" is the output of the Holder::Write function and will -// typically contain a binary header (in binary mode) and then -// the output of object.Write(os, binary). -// The archive itself does not care whether it is in binary -// or text mode, for reading purposes. - -template<class Holder> class SequentialTableReaderArchiveImpl: - public SequentialTableReaderImplBase<Holder> { - public: - typedef typename Holder::T T; - - SequentialTableReaderArchiveImpl(): state_(kUninitialized) { } - - virtual bool Open(const std::string &rspecifier) { - if (state_ != kUninitialized) { - if (! Close()) { // call Close() yourself to suppress this exception. - if (opts_.permissive) - KALDI_WARN << "TableReader::Open, error closing previous input " - "(only warning, since permissive mode)."; - else - KALDI_ERR << "TableReader::Open, error closing previous input."; - } - } - rspecifier_ = rspecifier; - RspecifierType rs = ClassifyRspecifier(rspecifier, - &archive_rxfilename_, - &opts_); - KALDI_ASSERT(rs == kArchiveRspecifier); - - bool ans; - // NULL means don't expect binary-mode header - if (Holder::IsReadInBinary()) - ans = input_.Open(archive_rxfilename_, NULL); - else - ans = input_.OpenTextMode(archive_rxfilename_); - if (!ans) { // header. - KALDI_WARN << "TableReader: failed to open stream " - << PrintableRxfilename(archive_rxfilename_); - state_ = kUninitialized; // Failure on Open - return false; // User should print the error message. - } - state_ = kFileStart; - Next(); - if (state_ == kError) { - KALDI_WARN << "Error beginning to read archive file (wrong filename?): " - << PrintableRxfilename(archive_rxfilename_); - input_.Close(); - state_ = kUninitialized; - return false; - } - KALDI_ASSERT(state_ == kHaveObject || state_ == kEof); - return true; - } - - virtual void Next() { - switch (state_) { - case kHaveObject: - holder_.Clear(); break; - case kFileStart: case kFreedObject: - break; - default: - KALDI_ERR << "TableReader: Next() called wrongly."; - } - std::istream &is = input_.Stream(); - is.clear(); // Clear any fail bits that may have been set... just in case - // this happened in the Read function. - is >> key_; // This eats up any leading whitespace and gets the string. - if (is.eof()) { - state_ = kEof; - return; - } - if (is.fail()) { // This shouldn't really happen, barring file-system errors. - KALDI_WARN << "Error reading archive " - << PrintableRxfilename(archive_rxfilename_); - state_ = kError; - return; - } - int c; - if ((c = is.peek()) != ' ' && c != '\t' && c != '\n') { // We expect a space ' ' after the key. - // We also allow tab [which is consumed] and newline [which is not], just - // so we can read archives generated by scripts that may not be fully - // aware of how this format works. - KALDI_WARN << "Invalid archive file format: expected space after key " - << key_ << ", got character " - << CharToString(static_cast<char>(is.peek())) << ", reading " - << PrintableRxfilename(archive_rxfilename_); - state_ = kError; - return; - } - if (c != '\n') is.get(); // Consume the space or tab. - if (holder_.Read(is)) { - state_ = kHaveObject; - return; - } else { - KALDI_WARN << "Object read failed, reading archive " - << PrintableRxfilename(archive_rxfilename_); - state_ = kError; - return; - } - } - - virtual bool IsOpen() const { - switch (state_) { - case kEof: case kError: case kHaveObject: case kFreedObject: return true; - case kUninitialized: return false; - default: KALDI_ERR << "IsOpen() called on invalid object."; // kFileStart is not valid - // state for user to call something on. - return false; - } - } - - virtual bool Done() const { - switch (state_) { - case kHaveObject: - return false; - case kEof: case kError: - return true; // Error-state counts as Done(), but destructor - // will fail (unless you check the status with Close()). - default: - KALDI_ERR << "Done() called on TableReader object at the wrong time."; - return false; - } - } - - virtual std::string Key() { - // Valid to call this whenever Done() returns false - switch (state_) { - case kHaveObject: break; // only valid case. - default: - // coding error. - KALDI_ERR << "Key() called on TableReader object at the wrong time."; - } - return key_; - } - const T &Value() { - switch (state_) { - case kHaveObject: - break; // only valid case. - default: - // coding error. - KALDI_ERR << "Value() called on TableReader object at the wrong time."; - } - return holder_.Value(); - } - virtual void FreeCurrent() { - if (state_ == kHaveObject) { - holder_.Clear(); - state_ = kFreedObject; - } else - KALDI_WARN << "TableReader: FreeCurernt called at the wrong time."; - } - - virtual bool Close() { - if (! this->IsOpen()) - KALDI_ERR << "Close() called on TableReader twice or otherwise wrongly."; - if (input_.IsOpen()) - input_.Close(); - if (state_ == kHaveObject) - holder_.Clear(); - bool ans; - if (opts_.permissive) { - ans = true; // always return success. - if (state_ == kError) - KALDI_WARN << "Error detected closing TableReader for archive " - << PrintableRxfilename(archive_rxfilename_) << " but ignoring " - << "it as permissive mode specified."; - } else - ans = (state_ != kError); // If error state, user should detect it. - state_ = kUninitialized; - return ans; - } - - virtual ~SequentialTableReaderArchiveImpl() { - if (state_ == kError) { - if (opts_.permissive) - KALDI_WARN << "Error detected closing TableReader for archive " - << PrintableRxfilename(archive_rxfilename_) << " but ignoring " - << "it as permissive mode specified."; - else - KALDI_ERR << "TableReader: error detected closing archive " - << PrintableRxfilename(archive_rxfilename_); - } - // If you don't want this exception to be thrown you can - // call Close() and check the status. - if (state_ == kHaveObject) - holder_.Clear(); - } - private: - Input input_; // Input object for the archive - Holder holder_; // Holds the object. - std::string key_; - std::string rspecifier_; - std::string archive_rxfilename_; - RspecifierOptions opts_; - enum { // [The state of the reading process] [does holder_ [is input_ - // have object] open] - kUninitialized, // Uninitialized or closed. no no - kFileStart, // [state we use internally: just opened.] no yes - kEof, // We did Next() and found eof in archive no no - kError, // Some other error no no - kHaveObject, // We read the key and the object after it. yes yes - kFreedObject, // The user called FreeCurrent(). no yes - } state_; -}; - - -template<class Holder> -SequentialTableReader<Holder>::SequentialTableReader(const std::string &rspecifier): impl_(NULL) { - if (rspecifier != "" && !Open(rspecifier)) - KALDI_ERR << "Error constructing TableReader: rspecifier is " << rspecifier; -} - -template<class Holder> -bool SequentialTableReader<Holder>::Open(const std::string &rspecifier) { - if (IsOpen()) - if (!Close()) - KALDI_ERR << "Could not close previously open object."; - // now impl_ will be NULL. - - RspecifierType wt = ClassifyRspecifier(rspecifier, NULL, NULL); - switch (wt) { - case kArchiveRspecifier: - impl_ = new SequentialTableReaderArchiveImpl<Holder>(); - break; - case kScriptRspecifier: - impl_ = new SequentialTableReaderScriptImpl<Holder>(); - break; - case kNoRspecifier: default: - KALDI_WARN << "Invalid rspecifier " << rspecifier; - return false; - } - if (!impl_->Open(rspecifier)) { - delete impl_; - impl_ = NULL; - return false; // sub-object will have printed warnings. - } - else return true; -} - -template<class Holder> -bool SequentialTableReader<Holder>::Close() { - CheckImpl(); - bool ans = impl_->Close(); - delete impl_; // We don't keep around empty impl_ objects. - impl_ = NULL; - return ans; -} - - -template<class Holder> -bool SequentialTableReader<Holder>::IsOpen() const { - return (impl_ != NULL); // Because we delete the object whenever - // that object is not open. Thus, the IsOpen functions of the - // Impl objects are not really needed. -} - -template<class Holder> -std::string SequentialTableReader<Holder>::Key() { - CheckImpl(); - return impl_->Key(); // this call may throw if called wrongly in other ways, - // e.g. eof. -} - - -template<class Holder> -void SequentialTableReader<Holder>::FreeCurrent() { - CheckImpl(); - impl_->FreeCurrent(); -} - - -template<class Holder> -const typename SequentialTableReader<Holder>::T & -SequentialTableReader<Holder>::Value() { - CheckImpl(); - return impl_->Value(); // This may throw (if LoadCurrent() returned false you are safe.). -} - - -template<class Holder> -void SequentialTableReader<Holder>::Next() { - CheckImpl(); - impl_->Next(); -} - -template<class Holder> -bool SequentialTableReader<Holder>::Done() { - CheckImpl(); - return impl_->Done(); -} - - -template<class Holder> -SequentialTableReader<Holder>::~SequentialTableReader() { - if (impl_) delete impl_; - // Destructor of impl_ may throw. -} - - - -template<class Holder> class TableWriterImplBase { - public: - typedef typename Holder::T T; - - virtual bool Open(const std::string &wspecifier) = 0; - - // Write returns true on success, false on failure, but - // some errors may not be detected until we call Close(). - // It throws (via KALDI_ERR) if called wrongly. We could - // have just thrown on all errors, since this is what - // TableWriter does; it was designed this way because originally - // TableWriter::Write returned an exit status. - virtual bool Write(const std::string &key, const T &value) = 0; - - // Flush will flush any archive; it does not return error status, - // any errors will be reported on the next Write or Close. - virtual void Flush() = 0; - - virtual bool Close() = 0; - - virtual bool IsOpen() const = 0; - - // May throw on write error if Close was not called. - virtual ~TableWriterImplBase() { } - - TableWriterImplBase() { } - private: - KALDI_DISALLOW_COPY_AND_ASSIGN(TableWriterImplBase); -}; - - -// The implementation of TableWriter we use when writing directly -// to an archive with no associated scp. -template<class Holder> -class TableWriterArchiveImpl: public TableWriterImplBase<Holder> { - public: - typedef typename Holder::T T; - - virtual bool Open(const std::string &wspecifier) { - switch (state_) { - case kUninitialized: - break; - case kWriteError: - KALDI_ERR << "TableWriter: opening stream, already open with write error."; - case kOpen: default: - if (!Close()) // throw because this error may not have been previously - // detected by the user. - KALDI_ERR << "TableWriter: opening stream, error closing previously open stream."; - } - wspecifier_ = wspecifier; - WspecifierType ws = ClassifyWspecifier(wspecifier, - &archive_wxfilename_, - NULL, - &opts_); - KALDI_ASSERT(ws == kArchiveWspecifier); // or wrongly called. - - if (output_.Open(archive_wxfilename_, opts_.binary, false)) { // false means no binary header. - state_ = kOpen; - return true; - } else { - // stream will not be open. User will report this error - // (we return bool), so don't bother printing anything. - state_ = kUninitialized; - return false; - } - } - - virtual bool IsOpen() const { - switch (state_) { - case kUninitialized: return false; - case kOpen: case kWriteError: return true; - default: KALDI_ERR << "IsOpen() called on TableWriter in invalid state."; - } - return false; - } - - // Write returns true on success, false on failure, but - // some errors may not be detected till we call Close(). - virtual bool Write(const std::string &key, const T &value) { - switch (state_) { - case kOpen: break; - case kWriteError: - // user should have known from the last - // call to Write that there was a problem. - KALDI_WARN << "TableWriter: attempting to write to invalid stream."; - return false; - case kUninitialized: default: - KALDI_ERR << "TableWriter: Write called on invalid stream"; - - } - // state is now kOpen or kWriteError. - if (!IsToken(key)) // e.g. empty string or has spaces... - KALDI_ERR << "TableWriter: using invalid key " << key; - output_.Stream() << key << ' '; - if (!Holder::Write(output_.Stream(), opts_.binary, value)) { - KALDI_WARN << "TableWriter: write failure to " - << PrintableWxfilename(archive_wxfilename_); - state_ = kWriteError; - return false; - } - if (state_ == kWriteError) return false; // Even if this Write seems to have - // succeeded, we fail because a previous Write failed and the archive may be - // corrupted and unreadable. - - if (opts_.flush) - Flush(); - return true; - } - - // Flush will flush any archive; it does not return error status, - // any errors will be reported on the next Write or Close. - virtual void Flush() { - switch (state_) { - case kWriteError: case kOpen: - output_.Stream().flush(); // Don't check error status. - return; - default: - KALDI_WARN << "TableWriter: Flush called on not-open writer."; - } - } - - virtual bool Close() { - if (!this->IsOpen() || !output_.IsOpen()) - KALDI_ERR << "TableWriter: Close called on a stream that was not open." << this->IsOpen() << ", " << output_.IsOpen(); - bool close_success = output_.Close(); - if (!close_success) { - KALDI_WARN << "TableWriter: error closing stream: wspecifier is " - << wspecifier_; - state_ = kUninitialized; - return false; - } - if (state_ == kWriteError) { - KALDI_WARN << "TableWriter: closing writer in error state: wspecifier is " - << wspecifier_; - state_ = kUninitialized; - return false; - } - state_ = kUninitialized; - return true; - } - - TableWriterArchiveImpl(): state_(kUninitialized) {} - - // May throw on write error if Close was not called. - virtual ~TableWriterArchiveImpl() { - if (!IsOpen()) return; - else if (!Close()) - KALDI_ERR << "At TableWriter destructor: Write failed or stream close " - << "failed: wspecifier is "<< wspecifier_; - } - - private: - Output output_; - WspecifierOptions opts_; - std::string wspecifier_; - std::string archive_wxfilename_; - enum { // is stream open? - kUninitialized, // no - kOpen, // yes - kWriteError, // yes - } state_; -}; - - - - -// The implementation of TableWriter we use when writing to -// individual files (more generally, wxfilenames) specified -// in an scp file that we read. - -// Note: the code for this class is similar to RandomAccessTableReaderScriptImpl; -// try to keep them in sync. - -template<class Holder> -class TableWriterScriptImpl: public TableWriterImplBase<Holder> { - public: - typedef typename Holder::T T; - - TableWriterScriptImpl(): last_found_(0), state_(kUninitialized) {} - - virtual bool Open(const std::string &wspecifier) { - switch (state_) { - case kReadScript: - KALDI_ERR << " Opening already open TableWriter: call Close first."; - case kUninitialized: case kNotReadScript: - break; - } - wspecifier_ = wspecifier; - WspecifierType ws = ClassifyWspecifier(wspecifier, - NULL, - &script_rxfilename_, - &opts_); - KALDI_ASSERT(ws == kScriptWspecifier); // or wrongly called. - KALDI_ASSERT(script_.empty()); // no way it could be nonempty at this point. - - if (! ReadScriptFile(script_rxfilename_, - true, // print any warnings - &script_)) { // error reading script file or invalid format - state_ = kNotReadScript; - return false; // no need to print further warnings. user gets the error. - } - std::sort(script_.begin(), script_.end()); - for (size_t i = 0; i+1 < script_.size(); i++) { - if (script_[i].first.compare(script_[i+1].first) >= 0) { - // script[i] not < script[i+1] in lexical order... - KALDI_WARN << "Script file " << PrintableRxfilename(script_rxfilename_) - << " contains duplicate key " << script_[i].first; - state_ = kNotReadScript; - return false; - } - } - state_ = kReadScript; - return true; - } - - virtual bool IsOpen() const { return (state_ == kReadScript); } - - virtual bool Close() { - if (!IsOpen()) - KALDI_ERR << "Close() called on TableWriter that was not open."; - state_ = kUninitialized; - last_found_ = 0; - script_.clear(); - return true; - } - - // Write returns true on success, false on failure, but - // some errors may not be detected till we call Close(). - virtual bool Write(const std::string &key, const T &value) { - if (!IsOpen()) - KALDI_ERR << "TableWriter: Write called on invalid stream"; - - if (!IsToken(key)) // e.g. empty string or has spaces... - KALDI_ERR << "TableWriter: using invalid key " << key; - - std::string wxfilename; - if (!LookupFilename(key, &wxfilename)) { - if (opts_.permissive) { - return true; // In permissive mode, it's as if we're writing to /dev/null - // for missing keys. - } else { - KALDI_WARN << "TableWriter: script file " - << PrintableRxfilename(script_rxfilename_) - << " has no entry for key "<<key; - return false; - } - } - Output output; - if (!output.Open(wxfilename, opts_.binary, false)) { - // Open in the text/binary mode (on Windows) given by member var. "binary" - // (obtained from wspecifier), but do not put the binary-mode header (it - // will be written, if needed, by the Holder::Write function.) - KALDI_WARN << "TableWriter: failed to open stream: " - << PrintableWxfilename(wxfilename); - return false; - } - if (!Holder::Write(output.Stream(), opts_.binary, value) - || !output.Close()) { - KALDI_WARN << "TableWriter: failed to write data to " - << PrintableWxfilename(wxfilename); - return false; - } - return true; - } - - // Flush does nothing in this implementation, there is nothing to flush. - virtual void Flush() { } - - - virtual ~TableWriterScriptImpl() { - // Nothing to do in destructor. - } - - private: - // Note: this function is almost the same as in RandomAccessTableReaderScriptImpl. - bool LookupFilename(const std::string &key, std::string *wxfilename) { - // First, an optimization: if we're going consecutively, this will - // make the lookup very fast. - last_found_++; - if (last_found_ < script_.size() && script_[last_found_].first == key) { - *wxfilename = script_[last_found_].second; - return true; - } - std::pair<std::string, std::string> pr(key, ""); // Important that "" - // compares less than or equal to any string, so lower_bound points to the - // element that has the same key. - typedef typename std::vector<std::pair<std::string, std::string> >::const_iterator - IterType; - IterType iter = std::lower_bound(script_.begin(), script_.end(), pr); - if (iter != script_.end() && iter->first == key) { - last_found_ = iter - script_.begin(); - *wxfilename = iter->second; - return true; - } else { - return false; - } - } - - - WspecifierOptions opts_; - std::string wspecifier_; - std::string script_rxfilename_; - - // the script_ variable contains pairs of (key, filename), sorted using - // std::sort. This can be used with binary_search to look up filenames for - // writing. If this becomes inefficient we can use std::unordered_map (but I - // suspect this wouldn't be significantly faster & would use more memory). - // If memory becomes a problem here, the user should probably be passing - // only the relevant part of the scp file rather than expecting us to get too - // clever in the code. - std::vector<std::pair<std::string, std::string> > script_; - size_t last_found_; // This is for an optimization used in LookupFilename. - - enum { - kUninitialized, - kReadScript, - kNotReadScript, // read of script failed. - } state_; -}; - - -// The implementation of TableWriter we use when writing directly -// to an archive plus an associated scp. -template<class Holder> -class TableWriterBothImpl: public TableWriterImplBase<Holder> { - public: - typedef typename Holder::T T; - - virtual bool Open(const std::string &wspecifier) { - switch (state_) { - case kUninitialized: - break; - case kWriteError: - KALDI_ERR << "TableWriter: opening stream, already open with write error."; - case kOpen: default: - if (!Close()) // throw because this error may not have been previously detected by user. - KALDI_ERR << "TableWriter: opening stream, error closing previously open stream."; - } - wspecifier_ = wspecifier; - WspecifierType ws = ClassifyWspecifier(wspecifier, - &archive_wxfilename_, - &script_wxfilename_, - &opts_); - KALDI_ASSERT(ws == kBothWspecifier); // or wrongly called. - if (ClassifyWxfilename(archive_wxfilename_) != kFileOutput) - KALDI_WARN << "When writing to both archive and script, the script file " - "will generally not be interpreted correctly unless the archive is " - "an actual file: wspecifier = " << wspecifier; - - if (!archive_output_.Open(archive_wxfilename_, opts_.binary, false)) { // false means no binary header. - state_ = kUninitialized; - return false; - } - if (!script_output_.Open(script_wxfilename_, false, false)) { // first false means text mode: - // script files always text-mode. second false means don't write header (doesn't matter - // for text mode). |