emotion detection

from ekphrasis.classes.preprocessor import TextPreProcessor
from ekphrasis.classes.tokenizer import SocialTokenizer
from ekphrasis.dicts.emoticons import emoticons
import numpy as np

import re
import io

label2emotion = {0: "others", 1: "happy", 2: "sad", 3: "angry"}
emotion2label = {"others": 0, "happy": 1, "sad": 2, "angry": 3}

emoticons_additional = {
    '(^・^)': '<happy>', ':‑c': '<sad>', '=‑d': '<happy>', ":'‑)": '<happy>', ':‑d': '<laugh>',
    ':‑(': '<sad>', ';‑)': '<happy>', ':‑)': '<happy>', ':\\/': '<sad>', 'd=<': '<annoyed>',
    ':‑/': '<annoyed>', ';‑]': '<happy>', '(^�^)': '<happy>', 'angru': 'angry', "d‑':":
        '<annoyed>', ":'‑(": '<sad>', ":‑[": '<annoyed>', '(�?�)': '<happy>', 'x‑d': '<laugh>',
}

text_processor = TextPreProcessor(
    # terms that will be normalized
    normalize=['url', 'email', 'percent', 'money', 'phone', 'user',
               'time', 'url', 'date', 'number'],
    # terms that will be annotated
    annotate={"hashtag", "allcaps", "elongated", "repeated",
              'emphasis', 'censored'},
    fix_html=True,  # fix HTML tokens
    # corpus from which the word statistics are going to be used 
    # for word segmentation 
    segmenter="twitter",
    # corpus from which the word statistics are going to be used 
    # for spell correction
    corrector="twitter",
    unpack_hashtags=True,  # perform word segmentation on hashtags
    unpack_contractions=True,  # Unpack contractions (can't -> can not)
    spell_correct_elong=True,  # spell correction for elongated words
    # select a tokenizer. You can use SocialTokenizer, or pass your own
    # the tokenizer, should take as input a string and return a list of tokens
    tokenizer=SocialTokenizer(lowercase=True).tokenize,
    # list of dictionaries, for replacing tokens extracted from the text,
    # with other expressions. You can pass more than one dictionaries.
    dicts=[emoticons, emoticons_additional]
)


def tokenize(text):
    text = " ".join(text_processor.pre_process_doc(text))
    return text


def preprocessData(dataFilePath, mode):
    conversations = []
    labels = []
    with io.open(dataFilePath, encoding="utf8") as finput:
        finput.readline()
        for line in finput:
            line = line.strip().split('\t')
            for i in range(1, 4):
                line[i] = tokenize(line[i])
            if mode == "train":
                labels.append(emotion2label[line[4]])
            conv = line[1:4]
            conversations.append(conv)
    if mode == "train":
        return np.array(conversations), np.array(labels)
    else:
        return np.array(conversations)