Commit | Line | Data |
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59f0d218 | 1 | #!/usr/bin/env python3 |
2d24e058 | 2 | "Script to generate a build order respecting package dependencies." |
59f0d218 | 3 | |
6521bf5c | 4 | import os |
00875c03 | 5 | import re |
6521bf5c | 6 | import sys |
59f0d218 | 7 | |
4f0cc219 FD |
8 | from itertools import filterfalse |
9 | ||
4f0cc219 | 10 | def unique_everseen(iterable, key=None): |
2d24e058 FF |
11 | """List unique elements, preserving order. Remember all elements ever seen. |
12 | See https://docs.python.org/3/library/itertools.html#itertools-recipes | |
13 | Examples: | |
14 | unique_everseen('AAAABBBCCDAABBB') --> A B C D | |
15 | unique_everseen('ABBCcAD', str.lower) --> A B C D""" | |
4f0cc219 FD |
16 | seen = set() |
17 | seen_add = seen.add | |
18 | if key is None: | |
19 | for element in filterfalse(seen.__contains__, iterable): | |
20 | seen_add(element) | |
21 | yield element | |
22 | else: | |
23 | for element in iterable: | |
24 | k = key(element) | |
25 | if k not in seen: | |
26 | seen_add(k) | |
27 | yield element | |
28 | ||
6521bf5c | 29 | def die(msg): |
2d24e058 | 30 | "Exit the process with an error message." |
6521bf5c | 31 | sys.exit('ERROR: ' + msg) |
59f0d218 | 32 | |
2d24e058 FF |
33 | def parse_build_file_dependencies(path): |
34 | "Extract the dependencies of a build.sh or *.subpackage.sh file." | |
35 | pkg_dep_prefix = 'TERMUX_PKG_DEPENDS=' | |
36 | pkg_build_dep_prefix = 'TERMUX_PKG_BUILD_DEPENDS=' | |
37 | subpkg_dep_prefix = 'TERMUX_SUBPKG_DEPENDS=' | |
38 | dependencies = [] | |
39 | ||
40 | with open(path, encoding="utf-8") as build_script: | |
41 | prefix = None | |
42 | for line in build_script: | |
43 | if line.startswith(pkg_dep_prefix): | |
44 | prefix = pkg_dep_prefix | |
45 | elif line.startswith(pkg_build_dep_prefix): | |
46 | prefix = pkg_build_dep_prefix | |
47 | elif line.startswith(subpkg_dep_prefix): | |
48 | prefix = subpkg_dep_prefix | |
49 | else: | |
50 | continue | |
51 | ||
52 | dependencies_string = line[len(prefix):] | |
53 | for char in "\"'\n": | |
54 | dependencies_string = dependencies_string.replace(char, '') | |
da6299f0 | 55 | |
2d24e058 FF |
56 | for dependency_value in dependencies_string.split(','): |
57 | # Replace parenthesis to ignore version qualifiers as in "gcc (>= 5.0)": | |
58 | dependency_value = re.sub(r'\(.*?\)', '', dependency_value).strip() | |
59 | dependency_value = re.sub('-dev$', '', dependency_value) | |
60 | dependencies.append(dependency_value) | |
da6299f0 | 61 | |
2d24e058 | 62 | return set(dependencies) |
da6299f0 | 63 | |
37af75e4 | 64 | class TermuxPackage(object): |
2d24e058 | 65 | "A main package definition represented by a directory with a build.sh file." |
02764a91 FF |
66 | def __init__(self, dir_path): |
67 | self.dir = dir_path | |
68 | self.name = os.path.basename(self.dir) | |
da6299f0 FD |
69 | |
70 | # search package build.sh | |
71 | build_sh_path = os.path.join(self.dir, 'build.sh') | |
72 | if not os.path.isfile(build_sh_path): | |
02764a91 | 73 | raise Exception("build.sh not found for package '" + self.name + "'") |
da6299f0 | 74 | |
2d24e058 | 75 | self.deps = parse_build_file_dependencies(build_sh_path) |
1858fd1b FF |
76 | if 'libandroid-support' not in self.deps and self.name != 'libandroid-support': |
77 | # Every package may depend on libandroid-support without declaring it: | |
78 | self.deps.add('libandroid-support') | |
da6299f0 FD |
79 | |
80 | # search subpackages | |
81 | self.subpkgs = [] | |
82 | ||
83 | for filename in os.listdir(self.dir): | |
2d24e058 FF |
84 | if not filename.endswith('.subpackage.sh'): |
85 | continue | |
02764a91 | 86 | subpkg = TermuxSubPackage(self.dir + '/' + filename, self) |
da6299f0 FD |
87 | |
88 | self.subpkgs.append(subpkg) | |
89 | self.deps |= subpkg.deps | |
90 | ||
91 | # Do not depend on itself | |
92 | self.deps.discard(self.name) | |
93 | # Do not depend on any sub package | |
94 | self.deps.difference_update([subpkg.name for subpkg in self.subpkgs]) | |
95 | ||
2d24e058 | 96 | self.needed_by = set() # Populated outside constructor, reverse of deps. |
da6299f0 FD |
97 | |
98 | def __repr__(self): | |
99 | return "<{} '{}'>".format(self.__class__.__name__, self.name) | |
100 | ||
2d24e058 FF |
101 | def recursive_dependencies(self, pkgs_map): |
102 | "All the dependencies of the package, both direct and indirect." | |
103 | result = [] | |
104 | for dependency_name in sorted(self.deps): | |
105 | dependency_package = pkgs_map[dependency_name] | |
106 | result += dependency_package.recursive_dependencies(pkgs_map) | |
107 | result += [dependency_package] | |
108 | return unique_everseen(result) | |
da6299f0 | 109 | |
2d24e058 FF |
110 | class TermuxSubPackage: |
111 | "A sub-package represented by a ${PACKAGE_NAME}.subpackage.sh file." | |
02764a91 | 112 | def __init__(self, subpackage_file_path, parent): |
da6299f0 FD |
113 | if parent is None: |
114 | raise Exception("SubPackages should have a parent") | |
115 | ||
02764a91 | 116 | self.name = os.path.basename(subpackage_file_path).split('.subpackage.sh')[0] |
da6299f0 | 117 | self.parent = parent |
2d24e058 | 118 | self.deps = parse_build_file_dependencies(subpackage_file_path) |
da6299f0 FD |
119 | |
120 | def __repr__(self): | |
121 | return "<{} '{}' parent='{}'>".format(self.__class__.__name__, self.name, self.parent) | |
6521bf5c | 122 | |
2d24e058 FF |
123 | def read_packages_from_directories(directories): |
124 | """Construct a map from package name to TermuxPackage. | |
125 | For subpackages this maps from the subpackage name to the parent package.""" | |
126 | pkgs_map = {} | |
02764a91 | 127 | all_packages = [] |
2d24e058 FF |
128 | |
129 | for package_dir in directories: | |
02764a91 FF |
130 | for pkgdir_name in sorted(os.listdir(package_dir)): |
131 | dir_path = package_dir + '/' + pkgdir_name | |
132 | if os.path.isfile(dir_path + '/build.sh'): | |
2d24e058 | 133 | new_package = TermuxPackage(package_dir + '/' + pkgdir_name) |
15ea0fef | 134 | |
2d24e058 FF |
135 | if new_package.name in pkgs_map: |
136 | die('Duplicated package: ' + new_package.name) | |
137 | else: | |
138 | pkgs_map[new_package.name] = new_package | |
139 | all_packages.append(new_package) | |
da6299f0 | 140 | |
2d24e058 FF |
141 | for subpkg in new_package.subpkgs: |
142 | if subpkg.name in pkgs_map: | |
143 | die('Duplicated package: ' + subpkg.name) | |
144 | else: | |
145 | pkgs_map[subpkg.name] = new_package | |
146 | all_packages.append(subpkg) | |
15ea0fef | 147 | |
2d24e058 FF |
148 | for pkg in all_packages: |
149 | for dependency_name in pkg.deps: | |
150 | if dependency_name not in pkgs_map: | |
151 | die('Package %s depends on non-existing package "%s"' % (pkg.name, dependency_name)) | |
152 | dep_pkg = pkgs_map[dependency_name] | |
153 | if not isinstance(pkg, TermuxSubPackage): | |
154 | dep_pkg.needed_by.add(pkg) | |
155 | return pkgs_map | |
da6299f0 | 156 | |
2d24e058 FF |
157 | def generate_full_buildorder(pkgs_map): |
158 | "Generate a build order for building all packages." | |
4f0cc219 FD |
159 | build_order = [] |
160 | ||
37af75e4 | 161 | # List of all TermuxPackages without dependencies |
da6299f0 FD |
162 | leaf_pkgs = [pkg for name, pkg in pkgs_map.items() if not pkg.deps] |
163 | ||
164 | if not leaf_pkgs: | |
165 | die('No package without dependencies - where to start?') | |
15ea0fef | 166 | |
1858fd1b FF |
167 | # Sort alphabetically: |
168 | pkg_queue = sorted(leaf_pkgs, key=lambda p: p.name) | |
15ea0fef FD |
169 | |
170 | # Topological sorting | |
da6299f0 FD |
171 | visited = set() |
172 | ||
2d24e058 FF |
173 | # Tracks non-visited deps for each package |
174 | remaining_deps = {} | |
175 | for name, pkg in pkgs_map.items(): | |
176 | remaining_deps[name] = set(pkg.deps) | |
177 | for subpkg in pkg.subpkgs: | |
178 | remaining_deps[subpkg.name] = set(subpkg.deps) | |
179 | ||
da6299f0 FD |
180 | while pkg_queue: |
181 | pkg = pkg_queue.pop(0) | |
182 | if pkg.name in visited: | |
183 | continue | |
da6299f0 FD |
184 | |
185 | # print("Processing {}:".format(pkg.name), pkg.needed_by) | |
0227e1a6 | 186 | visited.add(pkg.name) |
15ea0fef | 187 | build_order.append(pkg) |
da6299f0 FD |
188 | |
189 | for other_pkg in sorted(pkg.needed_by, key=lambda p: p.name): | |
0227e1a6 | 190 | # Remove this pkg from deps |
da6299f0 | 191 | remaining_deps[other_pkg.name].discard(pkg.name) |
da6299f0 FD |
192 | # ... and all its subpackages |
193 | remaining_deps[other_pkg.name].difference_update( | |
194 | [subpkg.name for subpkg in pkg.subpkgs] | |
195 | ) | |
196 | ||
0227e1a6 FD |
197 | if not remaining_deps[other_pkg.name]: # all deps were already appended? |
198 | pkg_queue.append(other_pkg) # should be processed | |
da6299f0 | 199 | |
da6299f0 | 200 | if set(pkgs_map.values()) != set(build_order): |
15ea0fef | 201 | print("ERROR: Cycle exists. Remaining: ") |
da6299f0 | 202 | for name, pkg in pkgs_map.items(): |
15ea0fef | 203 | if pkg not in build_order: |
da6299f0 FD |
204 | print(name, remaining_deps[name]) |
205 | ||
15ea0fef FD |
206 | sys.exit(1) |
207 | ||
4f0cc219 | 208 | return build_order |
15ea0fef | 209 | |
2d24e058 FF |
210 | def generate_target_buildorder(target_path, pkgs_map): |
211 | "Generate a build order for building the dependencies of the specified package." | |
212 | if target_path.endswith('/'): | |
213 | target_path = target_path[:-1] | |
4f0cc219 | 214 | |
2d24e058 FF |
215 | package_name = os.path.basename(target_path) |
216 | package = pkgs_map[package_name] | |
217 | return package.recursive_dependencies(pkgs_map) | |
a8d10018 | 218 | |
2d24e058 FF |
219 | def main(): |
220 | "Generate the build order either for all packages or a specific one." | |
221 | packages_directories = ['packages'] | |
02764a91 FF |
222 | full_buildorder = len(sys.argv) == 1 |
223 | if not full_buildorder: | |
224 | packages_real_path = os.path.realpath('packages') | |
225 | for path in sys.argv[1:]: | |
226 | if not os.path.isdir(path): | |
227 | die('Not a directory: ' + path) | |
2d24e058 FF |
228 | if path.endswith('/'): |
229 | path = path[:-1] | |
02764a91 FF |
230 | parent_path = os.path.dirname(path) |
231 | if packages_real_path != os.path.realpath(parent_path): | |
2d24e058 | 232 | packages_directories.append(parent_path) |
02764a91 | 233 | |
2d24e058 | 234 | pkgs_map = read_packages_from_directories(packages_directories) |
a8d10018 | 235 | |
02764a91 | 236 | if full_buildorder: |
2d24e058 | 237 | build_order = generate_full_buildorder(pkgs_map) |
4f0cc219 | 238 | else: |
2d24e058 | 239 | build_order = generate_target_buildorder(sys.argv[1], pkgs_map) |
a8d10018 | 240 | |
2d24e058 | 241 | for pkg in build_order: |
02764a91 | 242 | print(pkg.dir) |
2d24e058 FF |
243 | |
244 | if __name__ == '__main__': | |
245 | main() |