competition update

language_model/tools/text2token.py

@@ -0,0 +1,171 @@
+#!/usr/bin/env python3
+
+# Copyright 2017 Johns Hopkins University (Shinji Watanabe)
+# Copyright 2021 JD AI Lab. All Rights Reserved. (authors: Lu Fan)
+# Copyright 2021 Mobvoi Inc. All Rights Reserved. (Di Wu)
+#  Apache 2.0  (http://www.apache.org/licenses/LICENSE-2.0)
+
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import argparse
+import codecs
+import re
+import sys
+
+is_python2 = sys.version_info[0] == 2
+
+
+def exist_or_not(i, match_pos):
+    start_pos = None
+    end_pos = None
+    for pos in match_pos:
+        if pos[0] <= i < pos[1]:
+            start_pos = pos[0]
+            end_pos = pos[1]
+            break
+
+    return start_pos, end_pos
+
+def seg_char(sent):
+    pattern = re.compile(r'([\u4e00-\u9fa5])')
+    chars = pattern.split(sent)
+    chars = [w for w in chars if len(w.strip()) > 0]
+    return chars
+
+def get_parser():
+    parser = argparse.ArgumentParser(
+        description='convert raw text to tokenized text',
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+    parser.add_argument('--nchar',
+                        '-n',
+                        default=1,
+                        type=int,
+                        help='number of characters to split, i.e., \
+                        aabb -> a a b b with -n 1 and aa bb with -n 2')
+    parser.add_argument('--skip-ncols',
+                        '-s',
+                        default=0,
+                        type=int,
+                        help='skip first n columns')
+    parser.add_argument('--space',
+                        default='<space>',
+                        type=str,
+                        help='space symbol')
+    parser.add_argument('--bpe-model',
+                        '-m',
+                        default=None,
+                        type=str,
+                        help='bpe model for english part')
+    parser.add_argument('--non-lang-syms',
+                        '-l',
+                        default=None,
+                        type=str,
+                        help='list of non-linguistic symobles,'
+                        ' e.g., <NOISE> etc.')
+    parser.add_argument('text',
+                        type=str,
+                        default=False,
+                        nargs='?',
+                        help='input text')
+    parser.add_argument('--trans_type',
+                        '-t',
+                        type=str,
+                        default="char",
+                        choices=["char", "phn", "cn_char_en_bpe"],
+                        help="""Transcript type. char/phn. e.g., for TIMIT
+                             FADG0_SI1279 -
+                             If trans_type is char, read from
+                             SI1279.WRD file -> "bricks are an alternative"
+                             Else if trans_type is phn,
+                             read from SI1279.PHN file ->
+                             "sil b r ih sil k s aa r er n aa l
+                             sil t er n ih sil t ih v sil" """)
+    return parser
+
+
+def main():
+    parser = get_parser()
+    args = parser.parse_args()
+
+    rs = []
+    if args.non_lang_syms is not None:
+        with codecs.open(args.non_lang_syms, 'r', encoding="utf-8") as f:
+            nls = [x.rstrip() for x in f.readlines()]
+            rs = [re.compile(re.escape(x)) for x in nls]
+
+    if args.bpe_model is not None:
+        import sentencepiece as spm
+        sp = spm.SentencePieceProcessor()
+        sp.load(args.bpe_model)
+
+    if args.text:
+        f = codecs.open(args.text, encoding="utf-8")
+    else:
+        f = codecs.getreader("utf-8")(
+            sys.stdin if is_python2 else sys.stdin.buffer)
+
+    sys.stdout = codecs.getwriter("utf-8")(
+        sys.stdout if is_python2 else sys.stdout.buffer)
+    line = f.readline()
+    n = args.nchar
+    while line:
+        x = line.split()
+        print(' '.join(x[:args.skip_ncols]), end=" ")
+        a = ' '.join(x[args.skip_ncols:])
+
+        # get all matched positions
+        match_pos = []
+        for r in rs:
+            i = 0
+            while i >= 0:
+                m = r.search(a, i)
+                if m:
+                    match_pos.append([m.start(), m.end()])
+                    i = m.end()
+                else:
+                    break
+
+        if len(match_pos) > 0:
+            chars = []
+            i = 0
+            while i < len(a):
+                start_pos, end_pos = exist_or_not(i, match_pos)
+                if start_pos is not None:
+                    chars.append(a[start_pos:end_pos])
+                    i = end_pos
+                else:
+                    chars.append(a[i])
+                    i += 1
+            a = chars
+
+        if (args.trans_type == "phn"):
+            a = a.split(" ")
+        elif args.trans_type == "cn_char_en_bpe":
+            b = seg_char(a)
+            a = []
+            for j in b:
+                # we use "▁" to instead of blanks among english words
+                # warning: here is "▁", not "_"
+                for l in j.strip().split("▁"):
+                    if not l.encode('UTF-8').isalpha():
+                        a.append(l)
+                    else:
+                        for k in sp.encode_as_pieces(l):
+                            a.append(k)
+        else:
+            a = [a[j:j + n] for j in range(0, len(a), n)]
+
+        a_flat = []
+        for z in a:
+            a_flat.append("".join(z))
+
+        a_chars = [z.replace(' ', args.space) for z in a_flat]
+        if (args.trans_type == "phn"):
+            a_chars = [z.replace("sil", args.space) for z in a_chars]
+        print(' '.join(a_chars))
+        line = f.readline()
+
+
+if __name__ == '__main__':
+    main()