summaryrefslogtreecommitdiff
path: root/python/cdec/sa/data_array.pxi
blob: 2a8ea9219f622e62ca69313a02f0f7bef233f3e3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
# Defines "data arrays" that can be directly written to/read from disk in binary format
# In particular, the array itself is written/read directly as a glob of binary data
# Adam Lopez <alopez@cs.umd.edu>

from libc.stdio cimport FILE, fopen, fread, fwrite, fclose
from libc.stdlib cimport malloc, realloc, free
from libc.string cimport memset, strcpy

cdef class DataArray:
    cdef public word2id
    cdef public id2word
    cdef public IntList data
    cdef public IntList sent_id
    cdef public IntList sent_index
    cdef bint use_sent_id

    def __cinit__(self, from_binary=None, from_text=None, side=None, bint use_sent_id=False):
        self.word2id = {"END_OF_FILE":0, "END_OF_LINE":1}
        self.id2word = ["END_OF_FILE", "END_OF_LINE"]
        self.data = IntList(1000,1000)
        self.sent_id = IntList(1000,1000)
        self.sent_index = IntList(1000,1000)
        self.use_sent_id = use_sent_id
        if from_binary:
            self.read_binary(from_binary)
        elif from_text:
            if side:
                self.read_bitext(from_text, (0 if side == 'source' else 1))
            else:
                self.read_text(from_text)

    def __len__(self):
        return len(self.data)

    def get_sentence_id(self, i):
        return self.sent_id.arr[i]

    def get_sentence(self, i):
        cdef int j, start, stop
        sent = []
        start = self.sent_index.arr[i]
        stop = self.sent_index.arr[i+1]
        for i from start <= i < stop:
            sent.append(self.id2word[self.data.arr[i]])
        return sent

    def get_id(self, word):
        if not word in self.word2id:
            self.word2id[word] = len(self.id2word)
            self.id2word.append(word)
        return self.word2id[word]

    def __getitem__(self, loc):
        return self.id2word[self.data.arr[loc]]

    def get_sentence_bounds(self, loc):
        cdef int sid = self.sent_id.arr[loc]
        return (self.sent_index.arr[sid], self.sent_index.arr[sid+1])

    def write_text(self, char* filename):
        with open(filename, "w") as f:
            for w_id in self.data:
                if w_id > 1:
                    f.write("%s " % self.get_word(w_id))
                if w_id == 1:
                    f.write("\n")

    def read_text(self, char* filename):
        with gzip_or_text(filename) as fp:
            self.read_text_data(fp)

    def read_bitext(self, char* filename, int side):
        with gzip_or_text(filename) as fp:
            data = (line.split(' ||| ')[side] for line in fp)
            self.read_text_data(data)

    def read_text_data(self, data):
        cdef int word_count = 0
        for line_num, line in enumerate(data):
            self.sent_index.append(word_count)
            for word in line.split():
                self.data.append(self.get_id(word))
                if self.use_sent_id:
                    self.sent_id.append(line_num)
                word_count = word_count + 1
            self.data.append(1)
            if self.use_sent_id:
                self.sent_id.append(line_num)
            word_count = word_count + 1
        self.data.append(0)
        self.sent_index.append(word_count)


    def read_binary(self, char* filename):
        cdef FILE* f
        f = fopen(filename, "r")
        self.read_handle(f)
        fclose(f)

    cdef void read_handle(self, FILE* f):
        cdef int num_words, word_len
        cdef unsigned i
        cdef char* word

        self.data.read_handle(f)
        self.sent_index.read_handle(f)
        self.sent_id.read_handle(f)
        fread(&(num_words), sizeof(int), 1, f)
        for i in range(num_words):
            fread(&(word_len), sizeof(int), 1, f)
            word = <char*> malloc (word_len * sizeof(char))
            fread(word, sizeof(char), word_len, f)
            self.word2id[word] = len(self.id2word)
            self.id2word.append(word)
            free(word)
        if len(self.sent_id) == 0:
            self.use_sent_id = False
        else:
            self.use_sent_id = True

    cdef void write_handle(self, FILE* f):
        cdef int word_len
        cdef int num_words

        self.data.write_handle(f)
        self.sent_index.write_handle(f)
        self.sent_id.write_handle(f)
        num_words = len(self.id2word) - 2
        fwrite(&(num_words), sizeof(int), 1, f)
        for word in self.id2word[2:]:
            word_len = len(word) + 1
            fwrite(&(word_len), sizeof(int), 1, f)
            fwrite(<char *>word, sizeof(char), word_len, f)

    def write_binary(self, char* filename):
        cdef FILE* f
        f = fopen(filename, "w")
        self.write_handle(f)
        fclose(f)

    def write_enhanced_handle(self, f):
        for i in self.data:
            f.write("%d " %i)
        f.write("\n")
        for i in self.sent_index:
            f.write("%d " %i)
        f.write("\n")
        for i in self.sent_id:
            f.write("%d " %i)
        f.write("\n")
        for word in self.id2word:
            f.write("%s %d " % (word, self.word2id[word]))
        f.write("\n")

    def write_enhanced(self, char* filename):
        with open(filename, "w") as f:
            self.write_enhanced_handle(self, f)