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59f0d218 FF |
1 | #!/usr/bin/env python3 |
2 | # buildorder.py - script to generate a build order respecting package dependencies | |
3 | ||
6521bf5c | 4 | import os |
00875c03 | 5 | import re |
6521bf5c | 6 | import sys |
59f0d218 | 7 | |
4f0cc219 FD |
8 | from itertools import filterfalse |
9 | ||
10 | ||
11 | # https://docs.python.org/3/library/itertools.html#itertools-recipes | |
12 | ||
13 | def unique_everseen(iterable, key=None): | |
14 | "List unique elements, preserving order. Remember all elements ever seen." | |
15 | # unique_everseen('AAAABBBCCDAABBB') --> A B C D | |
16 | # unique_everseen('ABBCcAD', str.lower) --> A B C D | |
17 | seen = set() | |
18 | seen_add = seen.add | |
19 | if key is None: | |
20 | for element in filterfalse(seen.__contains__, iterable): | |
21 | seen_add(element) | |
22 | yield element | |
23 | else: | |
24 | for element in iterable: | |
25 | k = key(element) | |
26 | if k not in seen: | |
27 | seen_add(k) | |
28 | yield element | |
29 | ||
59f0d218 | 30 | |
6521bf5c FD |
31 | def die(msg): |
32 | sys.exit('ERROR: ' + msg) | |
59f0d218 | 33 | |
59f0d218 | 34 | |
da6299f0 FD |
35 | class TermuxBuildFile(object): |
36 | def __init__(self, path): | |
37 | self.path = path | |
38 | ||
39 | def _get_dependencies(self): | |
40 | pkg_dep_prefix = 'TERMUX_PKG_DEPENDS=' | |
45d85e7f | 41 | pkg_build_dep_prefix = 'TERMUX_PKG_BUILD_DEPENDS=' |
da6299f0 FD |
42 | subpkg_dep_prefix = 'TERMUX_SUBPKG_DEPENDS=' |
43 | ||
4e8d7d1e | 44 | with open(self.path, encoding="utf-8") as f: |
da6299f0 FD |
45 | prefix = None |
46 | for line in f: | |
47 | if line.startswith(pkg_dep_prefix): | |
48 | prefix = pkg_dep_prefix | |
45d85e7f FF |
49 | elif line.startswith(pkg_build_dep_prefix): |
50 | prefix = pkg_build_dep_prefix | |
da6299f0 FD |
51 | elif line.startswith(subpkg_dep_prefix): |
52 | prefix = subpkg_dep_prefix | |
53 | else: | |
54 | continue | |
55 | ||
539d9e6a | 56 | comma_deps = line[len(prefix):].replace('"', '').replace("'", '') |
da6299f0 FD |
57 | |
58 | return set([ | |
00875c03 | 59 | # Replace parenthesis to handle version qualifiers, as in "gcc (>= 5.0)": |
74b5c53c | 60 | re.sub(r'\(.*?\)', '', dep).replace('-dev', '').strip() for dep in comma_deps.split(',') |
da6299f0 FD |
61 | ]) |
62 | ||
63 | # no deps found | |
64 | return set() | |
65 | ||
66 | ||
37af75e4 | 67 | class TermuxPackage(object): |
da6299f0 FD |
68 | PACKAGES_DIR = 'packages' |
69 | ||
6521bf5c FD |
70 | def __init__(self, name): |
71 | self.name = name | |
da6299f0 FD |
72 | self.dir = os.path.join(self.PACKAGES_DIR, name) |
73 | ||
74 | # search package build.sh | |
75 | build_sh_path = os.path.join(self.dir, 'build.sh') | |
76 | if not os.path.isfile(build_sh_path): | |
af8dfb45 | 77 | raise Exception("build.sh not found for package '" + name + "'") |
da6299f0 FD |
78 | |
79 | self.buildfile = TermuxBuildFile(build_sh_path) | |
80 | self.deps = self.buildfile._get_dependencies() | |
1858fd1b FF |
81 | if 'libandroid-support' not in self.deps and self.name != 'libandroid-support': |
82 | # Every package may depend on libandroid-support without declaring it: | |
83 | self.deps.add('libandroid-support') | |
da6299f0 FD |
84 | |
85 | # search subpackages | |
86 | self.subpkgs = [] | |
87 | ||
88 | for filename in os.listdir(self.dir): | |
89 | if not filename.endswith('.subpackage.sh'): | |
90 | continue | |
91 | ||
92 | subpkg_name = filename.split('.subpackage.sh')[0] | |
93 | subpkg = TermuxSubPackage(subpkg_name, parent=self) | |
94 | ||
95 | self.subpkgs.append(subpkg) | |
96 | self.deps |= subpkg.deps | |
97 | ||
98 | # Do not depend on itself | |
99 | self.deps.discard(self.name) | |
100 | # Do not depend on any sub package | |
101 | self.deps.difference_update([subpkg.name for subpkg in self.subpkgs]) | |
102 | ||
103 | self.needed_by = set() # to be completed outside, reverse of deps | |
104 | ||
105 | def __repr__(self): | |
106 | return "<{} '{}'>".format(self.__class__.__name__, self.name) | |
107 | ||
108 | ||
109 | class TermuxSubPackage(TermuxPackage): | |
110 | ||
111 | def __init__(self, name, parent=None): | |
112 | if parent is None: | |
113 | raise Exception("SubPackages should have a parent") | |
114 | ||
115 | self.name = name | |
116 | self.parent = parent | |
117 | self.buildfile = TermuxBuildFile(os.path.join(self.parent.dir, name + '.subpackage.sh')) | |
118 | self.deps = self.buildfile._get_dependencies() | |
119 | ||
120 | def __repr__(self): | |
121 | return "<{} '{}' parent='{}'>".format(self.__class__.__name__, self.name, self.parent) | |
6521bf5c | 122 | |
da6299f0 FD |
123 | |
124 | # Tracks non-visited deps for each package | |
125 | remaining_deps = {} | |
6521bf5c | 126 | |
37af75e4 | 127 | # Mapping from package name to TermuxPackage |
6521bf5c | 128 | # (if subpackage, mapping from subpackage name to parent package) |
da6299f0 | 129 | pkgs_map = {} |
59f0d218 | 130 | |
da6299f0 FD |
131 | # Reverse dependencies |
132 | pkg_depends_on = {} | |
6521bf5c | 133 | |
da6299f0 | 134 | PACKAGES_DIR = 'packages' |
6521bf5c | 135 | |
15ea0fef | 136 | |
da6299f0 | 137 | def populate(): |
15ea0fef | 138 | |
da6299f0 | 139 | for pkgdir_name in sorted(os.listdir(PACKAGES_DIR)): |
15ea0fef | 140 | |
da6299f0 | 141 | pkg = TermuxPackage(pkgdir_name) |
15ea0fef | 142 | |
da6299f0 FD |
143 | pkgs_map[pkg.name] = pkg |
144 | ||
145 | for subpkg in pkg.subpkgs: | |
146 | pkgs_map[subpkg.name] = pkg | |
147 | remaining_deps[subpkg.name] = set(subpkg.deps) | |
148 | ||
149 | remaining_deps[pkg.name] = set(pkg.deps) | |
15ea0fef | 150 | |
da6299f0 FD |
151 | all_pkg_names = set(pkgs_map.keys()) |
152 | ||
153 | for name, pkg in pkgs_map.items(): | |
154 | for dep_name in remaining_deps[name]: | |
155 | if dep_name not in all_pkg_names: | |
15ea0fef | 156 | die('Package %s depends on non-existing package "%s"' % ( |
da6299f0 | 157 | name, dep_name |
15ea0fef | 158 | )) |
15ea0fef | 159 | |
da6299f0 FD |
160 | dep_pkg = pkgs_map[dep_name] |
161 | dep_pkg.needed_by.add(pkg) | |
162 | ||
163 | ||
4f0cc219 FD |
164 | def generate_full_buildorder(): |
165 | build_order = [] | |
166 | ||
37af75e4 | 167 | # List of all TermuxPackages without dependencies |
da6299f0 FD |
168 | leaf_pkgs = [pkg for name, pkg in pkgs_map.items() if not pkg.deps] |
169 | ||
170 | if not leaf_pkgs: | |
171 | die('No package without dependencies - where to start?') | |
15ea0fef | 172 | |
1858fd1b FF |
173 | # Sort alphabetically: |
174 | pkg_queue = sorted(leaf_pkgs, key=lambda p: p.name) | |
15ea0fef FD |
175 | |
176 | # Topological sorting | |
da6299f0 FD |
177 | visited = set() |
178 | ||
179 | while pkg_queue: | |
180 | pkg = pkg_queue.pop(0) | |
181 | if pkg.name in visited: | |
182 | continue | |
da6299f0 FD |
183 | |
184 | # print("Processing {}:".format(pkg.name), pkg.needed_by) | |
0227e1a6 | 185 | visited.add(pkg.name) |
15ea0fef | 186 | build_order.append(pkg) |
da6299f0 FD |
187 | |
188 | for other_pkg in sorted(pkg.needed_by, key=lambda p: p.name): | |
0227e1a6 | 189 | # Remove this pkg from deps |
da6299f0 | 190 | remaining_deps[other_pkg.name].discard(pkg.name) |
da6299f0 FD |
191 | # ... and all its subpackages |
192 | remaining_deps[other_pkg.name].difference_update( | |
193 | [subpkg.name for subpkg in pkg.subpkgs] | |
194 | ) | |
195 | ||
0227e1a6 FD |
196 | if not remaining_deps[other_pkg.name]: # all deps were already appended? |
197 | pkg_queue.append(other_pkg) # should be processed | |
da6299f0 | 198 | |
da6299f0 | 199 | if set(pkgs_map.values()) != set(build_order): |
15ea0fef | 200 | print("ERROR: Cycle exists. Remaining: ") |
da6299f0 | 201 | for name, pkg in pkgs_map.items(): |
15ea0fef | 202 | if pkg not in build_order: |
da6299f0 FD |
203 | print(name, remaining_deps[name]) |
204 | ||
15ea0fef FD |
205 | sys.exit(1) |
206 | ||
4f0cc219 | 207 | return build_order |
15ea0fef | 208 | |
da6299f0 | 209 | |
4f0cc219 FD |
210 | def deps_then_me(pkg): |
211 | l = [] | |
a8d10018 | 212 | |
a8d10018 | 213 | for dep in sorted(pkg.deps): |
4f0cc219 FD |
214 | l += deps_then_me(pkgs_map[dep]) |
215 | l += [pkg] | |
216 | ||
217 | return l | |
218 | ||
219 | ||
220 | def generate_targets_buildorder(targetnames): | |
221 | buildorder = [] | |
222 | ||
223 | for pkgname in targetnames: | |
e65ab762 FF |
224 | if not pkgname in pkgs_map: |
225 | die('Dependencies for ' + pkgname + ' could not be calculated (skip dependency check with -s)') | |
4f0cc219 FD |
226 | buildorder += deps_then_me(pkgs_map[pkgname]) |
227 | ||
228 | return unique_everseen(buildorder) | |
a8d10018 | 229 | |
15ea0fef | 230 | if __name__ == '__main__': |
da6299f0 | 231 | populate() |
a8d10018 FD |
232 | |
233 | if len(sys.argv) == 1: | |
4f0cc219 FD |
234 | bo = generate_full_buildorder() |
235 | else: | |
236 | bo = generate_targets_buildorder(sys.argv[1:]) | |
a8d10018 | 237 | |
4f0cc219 FD |
238 | for pkg in bo: |
239 | print(pkg.name) |