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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
ebuild.py
~~~~~~~~~~~~~
ebuild generation
:copyright: (c) 2013 by Jauhien Piatlicki
:license: GPL-2, see LICENSE for more details.
"""
from .compatibility import basestring
from .exceptions import DependencyError
class EbuildGenerator(object):
"""
Ebuild generator.
"""
def __init__(self, package_db):
"""
Args:
package_db: Package database.
"""
self.package_db = package_db
def generate(self, package, ebuild_data=None):
"""
Generate an ebuild for a package.
Args:
package: package_db.Package instance.
ebuild_data: Dictionary with ebuild data.
Returns:
Ebuild source as a list of strings.
"""
#a possible exception should be catched in the caller
if not ebuild_data:
ebuild_data = self.package_db.get_package_description(package)
ebuild_data = self.process_ebuild_data(ebuild_data)
ebuild = self.get_template(package, ebuild_data)
ebuild = self.process(ebuild, ebuild_data)
ebuild = self.postprocess(ebuild, ebuild_data)
return ebuild
def process_ebuild_data(self, ebuild_data):
"""
A hook allowing changing ebuild_data before ebuild generation.
Args:
ebuild_data: Dictinary with ebuild data.
Returns:
Dictinary with ebuild data.
"""
return ebuild_data
def process(self, ebuild, ebuild_data):
"""
Fill ebuild template with data.
Args:
ebuild: Ebuild template.
ebuild_data: Dictionary with ebuild data.
Returns:
Ebuild source as a list of strings.
"""
result = []
for line in ebuild:
error = ""
try:
line = line % ebuild_data
except ValueError as e:
error = str(e)
if error:
error = "substitution failed in line '" + line + "': " + error
raise DependencyError(error)
result.append(line)
return result
def get_template(self, package, ebuild_data):
"""
Generate ebuild template. Should be overriden.
Args:
package: package_db.Package instance.
ebuild_data: Dictionary with ebuild data.
Returns:
Ebuild template.
"""
ebuild = []
return ebuild
def postprocess(self, ebuild, ebuild_data):
"""
A hook for changing of a generated ebuild.
Args:
ebuild: Ebuild source as a list of strings.
ebuild_data: Dictionary with ebuild data.
Returns:
Ebuild source as a list of strings.
"""
return ebuild
class EbuildGeneratorFromFile(EbuildGenerator):
"""
Ebuild generators that takes templates from files.
"""
def __init__(self, package_db, filename=""):
super(EbuildGeneratorFromFile, self).__init__(package_db)
self.filename = filename
def get_template(self, package, ebuild_data):
"""
Generate ebuild template.
Args:
package: package_db.Package instance.
ebuild_data: Dictionary with ebuild data.
Returns:
Ebuild template.
"""
name = self.get_template_file(package, ebuild_data)
with open(name, 'r') as f:
ebuild = f.read().split('\n')
if ebuild[-1] == '':
ebuild = ebuild[:-1]
return ebuild
def get_template_file(self, package, ebuild_data):
"""
Get template filename for a package. Should be overriden.
Args:
package: package_db.Package instance.
ebuild_data: Dictionary with ebuild data.
Returns:
Template filename.
"""
return self.filename
class DefaultEbuildGenerator(EbuildGenerator):
"""
Default ebuild generator.
Takes a layout dictinary that describes ebuild structure and generates
an ebuild temlate basing on it.
Layout has entries for vars and inherited eclasses. Each entry is a list.
Entries are processed in the following order:
vars_before_inherit
inherit
vars_after_inherit
vars_after_description
vars_after_keywords
inherit entry is just a list of eclass names.
vars* entries are lists of variables in tw0 possible formats:
1. A string with variable name
2. A dictinary with entries:
name: variable name
value: variable value
raw: if present, not quotation of value will be done
Variable names are automatically transformed to the upper-case.
"""
def __init__(self, package_db, layout):
super(DefaultEbuildGenerator, self).__init__(package_db)
self.template = ["# automatically generated by g-sorcery",
"# please do not edit this file",
""]
if hasattr(layout, "eapi"):
self.template.append("EAPI=%s" % layout.eapi)
else:
self.template.append("EAPI=5")
self.template.append("")
if hasattr(layout, "vars_before_inherit"):
self._append_vars_to_template(layout.vars_before_inherit)
self.template.append("")
if hasattr(layout, "inherit"):
self.template.append("inherit " + " ".join(layout.inherit))
self.template.append("")
if hasattr(layout, "vars_after_inherit"):
self._append_vars_to_template(layout.vars_after_inherit)
self.template.append("")
self.template.append('DESCRIPTION="%(description)s"')
self.template.append("")
if hasattr(layout, "vars_after_description"):
self._append_vars_to_template(layout.vars_after_description)
self.template.append("")
self.template.append('SLOT="0"')
self.template.append('KEYWORDS="~amd64 ~x86"')
self.template.append("")
if hasattr(layout, "vars_after_keywords"):
self._append_vars_to_template(layout.vars_after_keywords)
self.template.append("")
def _append_vars_to_template(self, variables):
"""
Add a list of variables to the end of template.
Args:
variables: List of variables.
"""
for var in variables:
if isinstance(var, basestring):
self.template.append(var.upper() + '="%(' + var + ')s"')
else:
if "raw" in var:
quote = ''
else:
quote = '"'
if "value" in var:
self.template.append(var["name"].upper() \
+ '=' + quote + var["value"] + quote)
else:
self.template.append(var["name"].upper() + '=' + quote + '%(' + var["name"] + ')s' + quote)
def get_template(self, package, ebuild_data):
"""
Generate ebuild template.
Args:
package: package_db.Package instance.
ebuild_data: Dictionary with ebuild data.
Returns:
Ebuild template.
"""
return self.template
|
GitWeb