-
Notifications
You must be signed in to change notification settings - Fork 1
/
functions.py
197 lines (183 loc) · 5.82 KB
/
functions.py
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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
import os
import sqlite3
import urllib.request, urllib.parse, urllib.error
import re
def initialize(hdl):
hdl.executescript('''
DROP TABLE IF EXISTS listing;
DROP TABLE IF EXISTS session;
DROP TABLE IF EXISTS dailystat;
CREATE TABLE listing (
code SMALLINT NOT NULL PRIMARY KEY UNIQUE,
name TEXT,
currency CHAR(3),
shares INTEGER,
added DATE
);
CREATE TABLE session (
idx INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
date DATE UNIQUE,
sofyr SMALLINT NOT NULL
);
CREATE TABLE dailystat (
idx INTEGER,
code SMALLINT,
high REAL,
low REAL,
close REAL,
ask REAL,
bid REAL,
turnover FLOAT(20.3),
volume INTEGER,
PRIMARY KEY (idx, code)
)
''')
return()
def sqldate(d):
nd = '20'+d[:2]+'-'+d[2:4]+'-'+d[4:]
return(nd)
def nextday(dt):
# setup the next date to try
yy = int(dt[:2])
mm = int(dt[2:4])
dd = int(dt[4:])
dd = dd + 1
if dd > 31:
mm = mm + 1
dd = 1
if mm > 12:
yy = yy + 1
mm = 1
nd = str('00'+str(yy))[-2:]+("00" + str(mm))[-2:]+("00" + str(dd))[-2:]
return(nd)
def extlist(path, ext, w):
"""
create a list of files in path with extention ext
path : str of path to search
ext : str of extention of files to be search
w : if 'Y', returen a list of file names with extention
"""
flist = []
pos = len(ext)
for file in os.listdir(path):
if pos > 0:
if file.endswith(ext):
if w == 'Y':
flist.append(file)
else:
flist.append(file[:-1*pos])
else:
flist.append(file)
return(flist)
def url_is_alive(url):
"""
Checks that a given URL is reachable.
param url: A URL
"""
try:
urllib.request.urlopen(url)
except urllib.error.HTTPError as e:
return False
return True
def dnload(site, fname):
# Read the "site" and write it out to "fname"
# to preserve the original html file
# Then call html2txt to strip down the html tags.
hl = urllib.request.urlopen(site).read().decode()
fout = open(fname, 'w')
fout.write(hl)
fout.close()
def striptag(l):
ln = l.rstrip()
if len(ln) > 0:
ln = re.sub('<.+?>', '', ln)
if len(ln) > 0:
schr = re.findall('&.+;', ln)
if len(schr) > 0:
for ch in schr:
if ch == '&': ln = re.sub(ch, '&', ln)
elif ch == '"': ln = re.sub(ch, '"', ln)
elif ch == '<': ln = re.sub(ch, '<', ln)
elif ch == '>': ln = re.sub(ch, '>', ln)
return(ln)
def read_line(t):
r = []
r.append(t[1:6].strip())
r.append(t[7:23].strip())
r.append(t[24:27].strip())
r.append(t[28:36].strip().replace(',', ''))
r.append(t[37:45].strip().replace(',', ''))
r.append(t[46:54].strip().replace(',', ''))
r.append(t[55:].strip().replace(',', ''))
return(r)
def html2db(filename, db):
td = filename[-11:-5]
date = sqldate(td)
qpage = open(filename, 'r')
st = 's'
for line in qpage:
if line.strip() == '': continue
# strip html tags and convert escape sequence
line = striptag(line)
# search and extract the session number for the year
if st == 's':
if line.find(td) > -1:
line = "00" + line
senum = line[:line.index('/')]
senum = senum[-3:]
db.execute('INSERT INTO session (date, sofyr) VALUES (?,?)', \
(date,senum))
db.execute('SELECT idx FROM session WHERE date = ?', (date,))
seq = db.fetchone()[0]
st = 'h'
# locate the beginning of the quotation section
elif st == 'h':
if line.find('CLOSING BID LOW TURNOVER ($)') > -1:
st = 'q'
# read the first line of each quotation
elif st == 'q':
# stop the reading operation once the end of section is reached
if line.startswith('------'):
st = 'd'
break
q = read_line(line)
if len(q[0]) > 0:
for i in [0,6]:
try:
q[i] = int(q[i])
except:
q[i] = 'NULL'
for i in [3,4,5]:
try:
q[i] = float(q[i])
except:
q[i] = 'NULL'
code = q[0]
name = q[1]
cur = q[2]
prv = q[3]
ask = q[4]
high = q[5]
traded = q[6]
# check if company already in listing
# INSERT a record if it is not
db.execute("SELECT code FROM listing WHERE code = ?", (code,))
if db.fetchone() == None:
db.execute("INSERT INTO listing (code, name, currency, added) \
VALUES (?,?,?,?)", (int(code), name, cur, date))
else:
for i in range(3,7):
try:
q[i] = float(q[i])
except:
q[i] = 'NULL'
# read the next line of the quotation
close = q[3]
bid = q[4]
low = q[5]
tunovr = q[6]
db.execute('INSERT INTO dailystat (idx, code, high, low, \
close, ask, bid, turnover, volume) VALUES (?,?,?,?,?,?,?,\
?,?)', (seq, code, high, low, close, ask, bid, tunovr, traded))
qpage.close()
return(senum)