fixed an item-lost bug when exporting to textgrid

[fncokg]

There is a item-lost bug in the previous version, which will make every file to lose its first phone and word item in the exported textgrid file.

Problem

In function construct_textgrid_output of file textgrid.py, the while True loop ends with this:

Montreal-Forced-Aligner/montreal_forced_aligner/textgrid.py

Lines 420 to 422 in 76c46a1

	word_data = []
	phone_data = []
	utterance_data = []

These codes empty the three lists, while they are not empty because of these lines:

Montreal-Forced-Aligner/montreal_forced_aligner/textgrid.py

Line 377 in 76c46a1

phone_data = [(pi_begin, pi_end, phone, pi_speaker_name)]

Montreal-Forced-Aligner/montreal_forced_aligner/textgrid.py

Line 393 in 76c46a1

word_data = [(wi_begin, wi_end, word, wi_speaker_name)]

Montreal-Forced-Aligner/montreal_forced_aligner/textgrid.py

Line 406 in 76c46a1

utterance_data = [(u_begin, u_end, text, u_speaker_name)]

Emptying them at the ending of a loop will cause a direct data discard.

Solution

I removed the three lines first, and to avoid the loop becomes an infinite loop, in this if block:

Montreal-Forced-Aligner/montreal_forced_aligner/textgrid.py

Lines 383 to 387 in 76c46a1

	if phone_data:
	process_phone_data()
	current_file_id = pi_current_file_id
	else:
	break

I added a:

phone_data = []

These codes were tested and worked well now.