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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
#!/usr/bin/env python3
#!@{SHEBANG}
'''
gpp – Bash based general purpose preprocessor
Copyright © 2013 Mattias Andrée (maandree@member.fsf.org)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
'''
VERSION="@{VERSION}"
import os
import sys
import shlex
from subprocess import Popen, PIPE
symbol = '@'
encoding = 'utf-8'
iterations = 1
input_file = '/dev/stdin'
output_file = '/dev/stdout'
unshebang = 0
args = sys.argv
# If the file is executed, the first command line argument will be the first argument in the shebang,
# the second will be the rest of the arguments in the command line as is and the third and final will
# be the executed file.
if len(args) == 3:
if os.path.exists(args[2]) and os.path.isfile(args[2]) and ((os.stat(args[2]).st_mode & 0o111) != 0):
args[1 : 2] = shlex.split(args[1])
for i in range(1, len(args)):
arg = args[i]
i += 1
if arg in ('-s', '--symbol'): symbol = sys.argv[i]
elif arg in ('-e', '--encoding'): encoding = sys.argv[i]
elif arg in ('-n', '--iterations'): iterations = int(sys.argv[i])
elif arg in ('-u', '--unshebang'): unshebang += 1; continue
elif arg in ('-i', '--input'): input_file = sys.argv[i]
elif arg in ('-o', '--output'): output_file = sys.argv[i]
elif arg in ('-f', '--file'):
input_file = sys.argv[i]
output_file = sys.argv[i]
elif arg in ('-D', '--export'):
export = sys.argv[i]
if '=' not in export:
export += '=1'
export = (export.split('=')[0], '='.join(export.split('=')[1:]))
os.putenv(export[0], export[1])
elif arg in ('-v', '--version'):
print('gpp ' + VERSION)
sys.exit(0)
elif arg in ('-c', '--copying'):
print('gpp – Bash based general purpose preprocessor')
print('')
print('Copyright © 2013 Mattias Andrée (maandree@member.fsf.org)')
print('')
print('This program is free software: you can redistribute it and/or modify')
print('it under the terms of the GNU General Public License as published by')
print('the Free Software Foundation, either version 3 of the License, or')
print('(at your option) any later version.')
print('')
print('This program is distributed in the hope that it will be useful,')
print('but WITHOUT ANY WARRANTY; without even the implied warranty of')
print('MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the')
print('GNU General Public License for more details.')
print('')
print('You should have received a copy of the GNU General Public License')
print('along with this program. If not, see <http://www.gnu.org/licenses/>.')
sys.exit(0)
else:
continue
i += 1
if input_file == '-': input_file = '/dev/stdin'
if output_file == '-': output_file = '/dev/stdout'
if iterations < 1:
if input_file != output_file:
data = None
with open(input_file, 'rb') as file:
data = file.read()
with open(write_file, 'wb') as file:
file.write(data)
file.flush()
sys.exit(0)
data = None
with open(input_file, 'rb') as file:
data = file.read().decode(encoding, 'error').split('\n')
if unshebang == 1:
if data[0][:2] == '#!':
data[0] = ''
if unshebang >= 2:
if data[0][:2] == '#!':
data[0] = data[1]
data[1] = ''
def pp(line):
rc = ''
symb = False
brackets = 0
esc = False
dollar = False
quote = []
for c in line:
if brackets > 0:
if esc:
esc = False
elif (c == ')') or (c == '}'):
brackets -= 1
if brackets == 0:
rc += c + '"\''
continue
elif (c == '(') or (c == '{'):
brackets += 1
elif c == '\\':
esc = True
rc += c
elif symb:
symb = False
if (c == '(') or (c == '{'):
brackets += 1
rc += '\'"$' + c
else:
rc += c
elif c == symbol:
symb = True
elif len(quote) > 0:
if esc:
esc = False
elif dollar:
dollar = False
if c == '(':
quote.append(')')
elif c == '{':
quote.append('}')
elif c == quote[-1]:
quote[:] = quote[:-1]
elif (quote[-1] in ')}') and (c in '\'"`'):
quote.append(c)
elif (c == '\\') and (quote[-1] != "'"):
esc = True
elif c == '$':
dollar = True
rc += c
elif (c == '"') or (c == "'") or (c == '`'):
quote.append(c)
rc += c
else:
rc += c
return rc
for _ in range(iterations):
entered = False
bashed = []
for lineno in range(len(data)):
line = data[lineno]
if line.startswith(symbol + '<'):
bashed.append(line[2:])
entered = True
elif line.startswith(symbol + '>'):
bashed.append(line[2:])
entered = False
elif entered:
bashed.append(line)
else:
line = '\'%s\'' % line.replace('\'', '\'\\\'\'')
bashed.append('echo $\'\\e%i\\e\'%s' % (lineno, pp(line)))
bashed = '\n'.join(bashed).encode(encoding)
bash = Popen(["bash"], stdin = PIPE, stdout = PIPE, stderr = sys.stderr)
bashed = bash.communicate(bashed)[0]
if bash.returncode != 0:
sys.exit(bash.returncode)
bashed = bashed.decode(encoding, 'error').split('\n')
data = []
lineno = -1
for line in bashed:
no = -1
if line.startswith('\033'):
no = int(line[1:].split('\033')[0])
line = '\033'.join(line[1:].split('\033')[1:])
if no > lineno:
while no != lineno + 1:
data.append('')
lineno += 1
data.append(line)
lineno += 1
with open(output_file, 'wb') as file:
file.write('\n'.join(data).encode(encoding))
file.flush()
|
