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7939f6d1 RC |
1 | /* |
2 | * Copyright (c) 2001, Robert Collins. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by Robert Collins <rbtcollins@hotmail.com> | |
13 | * | |
14 | */ | |
15 | ||
16 | /* this is the parent class for all package operations. | |
17 | */ | |
18 | ||
19 | #if 0 | |
20 | static const char *cvsid = | |
21 | "\n%%% $Id$\n"; | |
22 | #endif | |
bb849dbd RC |
23 | |
24 | #include "package_version.h" | |
3c196821 RC |
25 | #include "package_db.h" |
26 | #include "package_meta.h" | |
27 | #include "state.h" | |
28 | #include "resource.h" | |
4f591f9d | 29 | #include <algorithm> |
3c196821 RC |
30 | |
31 | /* a default class to avoid special casing empty packageversions */ | |
32 | ||
33 | /* TODO place into the class header */ | |
34 | class _defaultversion : public _packageversion | |
bb849dbd | 35 | { |
3c196821 RC |
36 | public: |
37 | _defaultversion() | |
38 | { | |
39 | // never try to free me! | |
40 | ++references; | |
41 | } | |
42 | String const Name(){return String();} | |
43 | String const Vendor_version() {return String();} | |
44 | String const Package_version() {return String();} | |
45 | String const Canonical_version() {return String();} | |
46 | void setCanonicalVersion (String const &) {} | |
47 | package_status_t Status (){return package_notinstalled;} | |
48 | package_type_t Type () {return package_binary;} | |
49 | String const getfirstfile () {return String();} | |
50 | String const getnextfile () {return String();} | |
51 | String const SDesc () {return String();} | |
52 | void set_sdesc (String const &) {} | |
53 | String const LDesc () {return String();} | |
54 | void set_ldesc (String const &) {} | |
55 | void uninstall (){} | |
bb849dbd | 56 | }; |
3c196821 RC |
57 | static _defaultversion defaultversion; |
58 | ||
59 | /* the wrapper class */ | |
60 | packageversion::packageversion() : data (&defaultversion) | |
61 | { | |
62 | ++data->references; | |
63 | } | |
64 | ||
65 | /* Create from an actual package */ | |
66 | packageversion::packageversion (_packageversion *pkg) | |
67 | { | |
68 | if (pkg) | |
69 | data = pkg; | |
70 | else | |
71 | data = &defaultversion; | |
72 | ++data->references; | |
73 | } | |
74 | ||
75 | packageversion::packageversion (packageversion const &existing) : | |
76 | data(existing.data) | |
77 | { | |
78 | ++data->references; | |
79 | } | |
80 | ||
81 | packageversion::~packageversion() | |
82 | { | |
83 | if (--data->references == 0) | |
84 | delete data; | |
85 | } | |
86 | ||
87 | packageversion & | |
88 | packageversion::operator= (packageversion const &rhs) | |
89 | { | |
90 | ++rhs.data->references; | |
91 | if (--data->references == 0) | |
92 | delete data; | |
93 | data = rhs.data; | |
94 | return *this; | |
95 | } | |
96 | ||
97 | bool | |
98 | packageversion::operator ! () const | |
99 | { | |
100 | return !data->Name().size(); | |
101 | } | |
102 | ||
103 | packageversion::operator bool () const | |
104 | { | |
105 | return data->Name().size(); | |
106 | } | |
107 | ||
108 | bool | |
109 | packageversion::operator == (packageversion const &rhs) const | |
110 | { | |
111 | if (this == &rhs || data == rhs.data) | |
112 | return true; | |
113 | else | |
114 | return data->Name () == rhs.data->Name() && data->Canonical_version () == rhs.data->Canonical_version(); | |
115 | } | |
116 | ||
117 | bool | |
118 | packageversion::operator != (packageversion const &rhs) const | |
119 | { | |
120 | return ! (*this == rhs); | |
121 | } | |
122 | ||
123 | bool | |
124 | packageversion::operator < (packageversion const &rhs) const | |
125 | { | |
126 | int t = data->Name ().casecompare (rhs.data->Name()); | |
127 | if (t < 0) | |
128 | return true; | |
129 | else if (t > 0) | |
130 | return false; | |
131 | else if (data->Canonical_version().casecompare (rhs.data->Canonical_version()) < 0) | |
132 | return true; | |
133 | return false; | |
134 | } | |
135 | ||
136 | String const | |
137 | packageversion::Name () const | |
138 | { | |
139 | return data->Name (); | |
140 | } | |
141 | ||
142 | String const | |
143 | packageversion::Canonical_version() const | |
144 | { | |
145 | return data->Canonical_version(); | |
146 | } | |
147 | ||
148 | void | |
149 | packageversion::setCanonicalVersion (String const &ver) | |
150 | { | |
151 | data->setCanonicalVersion (ver); | |
152 | } | |
153 | ||
154 | String const | |
155 | packageversion::getfirstfile () | |
156 | { | |
157 | return data->getfirstfile (); | |
158 | } | |
159 | ||
160 | String const | |
161 | packageversion::getnextfile () | |
162 | { | |
163 | return data->getnextfile (); | |
164 | } | |
165 | ||
166 | String const | |
167 | packageversion::SDesc () const | |
168 | { | |
169 | return data->SDesc (); | |
170 | } | |
171 | ||
172 | void | |
173 | packageversion::set_sdesc (String const &sdesc) | |
174 | { | |
175 | data->set_sdesc (sdesc); | |
176 | } | |
177 | ||
178 | String const | |
179 | packageversion::LDesc () const | |
180 | { | |
181 | return data->LDesc (); | |
182 | } | |
183 | ||
184 | void | |
185 | packageversion::set_ldesc (String const &ldesc) | |
186 | { | |
187 | data->set_ldesc (ldesc); | |
188 | } | |
189 | ||
190 | packageversion | |
191 | packageversion::sourcePackage() | |
192 | { | |
193 | return data->sourcePackage(); | |
194 | } | |
aa1e3b4d RC |
195 | |
196 | PackageSpecification & | |
3c196821 RC |
197 | packageversion::sourcePackageSpecification () |
198 | { | |
199 | return data->sourcePackageSpecification (); | |
200 | } | |
201 | ||
202 | void | |
203 | packageversion::setSourcePackageSpecification (PackageSpecification const &spec) | |
204 | { | |
205 | data->setSourcePackageSpecification(spec); | |
206 | } | |
207 | ||
208 | vector <vector <PackageSpecification *> *> * | |
209 | packageversion::depends() | |
210 | { | |
211 | return &data->depends; | |
212 | } | |
213 | ||
214 | vector <vector <PackageSpecification *> *> * | |
215 | packageversion::predepends() | |
216 | { | |
217 | return &data->predepends; | |
218 | } | |
219 | ||
220 | vector <vector <PackageSpecification *> *> * | |
221 | packageversion::recommends() | |
222 | { | |
223 | return &data->recommends; | |
224 | } | |
225 | ||
226 | vector <vector <PackageSpecification *> *> * | |
227 | packageversion::suggests() | |
228 | { | |
229 | return &data->suggests; | |
230 | } | |
231 | ||
232 | vector <vector <PackageSpecification *> *> * | |
233 | packageversion::replaces() | |
234 | { | |
235 | return &data->replaces; | |
236 | } | |
237 | ||
238 | vector <vector <PackageSpecification *> *> * | |
239 | packageversion::conflicts() | |
240 | { | |
241 | return &data->conflicts; | |
242 | } | |
243 | ||
244 | vector <vector <PackageSpecification *> *> * | |
245 | packageversion::provides() | |
246 | { | |
247 | return &data->provides; | |
248 | } | |
249 | ||
b1ff53ed RC |
250 | vector <vector <PackageSpecification *> *> * |
251 | packageversion::binaries() | |
252 | { | |
253 | return &data->binaries; | |
254 | } | |
3c196821 RC |
255 | |
256 | bool | |
257 | packageversion::picked () const | |
258 | { | |
259 | return data->picked; | |
260 | } | |
261 | ||
262 | void | |
263 | packageversion::pick (bool aBool) | |
264 | { | |
265 | data->picked = aBool; | |
266 | } | |
267 | ||
268 | bool | |
269 | packageversion::changeRequested () const | |
270 | { | |
271 | return data->changeRequested (); | |
272 | } | |
273 | ||
274 | void | |
275 | packageversion::uninstall () | |
276 | { | |
277 | data->uninstall (); | |
278 | } | |
279 | ||
280 | packagesource * | |
281 | packageversion::source () | |
282 | { | |
e5662e0a RC |
283 | if (!data->sources.size()) |
284 | data->sources.push_back (packagesource()); | |
285 | return &data->sources[0]; | |
3c196821 RC |
286 | } |
287 | ||
ec13f13c RC |
288 | vector<packagesource> * |
289 | packageversion::sources () | |
290 | { | |
291 | return &data->sources; | |
292 | } | |
293 | ||
3c196821 RC |
294 | bool |
295 | packageversion::accessible() const | |
296 | { | |
297 | return data->accessible(); | |
298 | } | |
299 | ||
4f591f9d RC |
300 | static bool |
301 | checkForInstalled (PackageSpecification *spec) | |
302 | { | |
303 | packagedb db; | |
304 | packagemeta *required = db.findBinary (*spec); | |
305 | if (!required) | |
306 | return false; | |
307 | if (spec->satisfies (required->installed) | |
308 | && required->desired == required->installed ) | |
309 | /* done, found a satisfactory installed version that will remain | |
310 | installed */ | |
311 | return true; | |
312 | return false; | |
313 | } | |
314 | ||
315 | static bool | |
316 | checkForUpgradeable (PackageSpecification *spec) | |
317 | { | |
318 | packagedb db; | |
319 | packagemeta *required = db.findBinary (*spec); | |
320 | if (!required || !required->installed) | |
321 | return false; | |
322 | for (set <packageversion>::iterator i = required->versions.begin(); | |
323 | i != required->versions.end(); ++i) | |
324 | if (spec->satisfies (*i)) | |
325 | return true; | |
326 | return false; | |
327 | } | |
328 | ||
329 | static bool | |
330 | checkForSatisfiable (PackageSpecification *spec) | |
331 | { | |
332 | packagedb db; | |
333 | packagemeta *required = db.findBinary (*spec); | |
334 | if (!required) | |
335 | return false; | |
336 | for (set <packageversion>::iterator i = required->versions.begin(); | |
337 | i != required->versions.end(); ++i) | |
338 | if (spec->satisfies (*i)) | |
339 | return true; | |
340 | return false; | |
341 | } | |
342 | ||
343 | static int | |
344 | processOneDependency(trusts deftrust, size_t depth, PackageSpecification *spec) | |
345 | { | |
346 | /* TODO: add this to a set of packages to be offered to meet the | |
347 | requirement. For now, simply set the install to the first | |
348 | satisfactory version. The user can step through the list if | |
349 | desired */ | |
350 | packagedb db; | |
351 | packagemeta *required = db.findBinary (*spec); | |
352 | set <packageversion>::iterator v; | |
353 | for (v = required->versions.begin(); | |
354 | v != required->versions.end() && !spec->satisfies (*v); ++v); | |
355 | if (v != required->versions.end()) | |
356 | { | |
357 | /* preserve source */ | |
358 | bool sourceticked = required->desired.sourcePackage().picked(); | |
359 | /* install this version */ | |
360 | required->desired = *v; | |
361 | required->desired.pick (required->installed != required->desired); | |
362 | required->desired.sourcePackage().pick (sourceticked); | |
363 | /* does this requirement have requirements? */ | |
364 | return required->set_requirements (deftrust, depth + 1); | |
365 | } | |
366 | /* else assert !! */ | |
367 | return 0; | |
368 | } | |
369 | ||
370 | int | |
371 | packageversion::set_requirements (trusts deftrust = TRUST_CURR, size_t depth = 0) | |
372 | { | |
373 | int changed = 0; | |
374 | vector <vector <PackageSpecification *> *>::iterator dp = depends ()->begin(); | |
375 | /* cheap test for too much recursion */ | |
376 | if (depth > 5) | |
377 | return changed; | |
378 | /* walk through each and clause */ | |
379 | while (dp != depends ()->end()) | |
380 | { | |
381 | /* three step: | |
382 | 1) is a satisfactory or clause installed? | |
383 | 2) is an unsatisfactory version of an or clause which has | |
384 | a satisfactory version available installed? | |
385 | 3) is a satisfactory package available? | |
386 | */ | |
387 | /* check each or clause for an installed match */ | |
388 | vector <PackageSpecification *>::iterator i = | |
389 | find_if ((*dp)->begin(), (*dp)->end(), checkForInstalled); | |
390 | if (i != (*dp)->end()) | |
391 | { | |
392 | /* we found an installed ok package */ | |
393 | /* next and clause */ | |
394 | ++dp; | |
395 | continue; | |
396 | } | |
397 | /* check each or clause for an upgradeable version */ | |
398 | i = find_if ((*dp)->begin(), (*dp)->end(), checkForUpgradeable); | |
399 | if (i != (*dp)->end()) | |
400 | { | |
401 | /* we found a package that can be up/downgraded to meet the | |
402 | requirement. (*i is the packagespec that can be satisfied.) | |
403 | */ | |
404 | ++dp; | |
405 | changed += processOneDependency (deftrust, depth, *i) + 1; | |
406 | continue; | |
407 | } | |
408 | /* check each or clause for an installable version */ | |
409 | i = find_if ((*dp)->begin(), (*dp)->end(), checkForSatisfiable); | |
410 | if (i != (*dp)->end()) | |
411 | { | |
412 | /* we found a package that can be installed to meet the requirement */ | |
413 | ++dp; | |
414 | changed += processOneDependency (deftrust, depth, *i) + 1; | |
415 | continue; | |
416 | } | |
417 | ++dp; | |
418 | } | |
419 | return changed; | |
420 | } | |
421 | ||
3c196821 RC |
422 | /* the parent data class */ |
423 | ||
424 | _packageversion::_packageversion ():picked (false), references (0) | |
425 | { | |
426 | } | |
427 | ||
428 | _packageversion::~_packageversion () | |
429 | { | |
430 | } | |
431 | ||
432 | PackageSpecification & | |
433 | _packageversion::sourcePackageSpecification () | |
aa1e3b4d RC |
434 | { |
435 | return _sourcePackage; | |
436 | } | |
437 | ||
438 | void | |
3c196821 | 439 | _packageversion::setSourcePackageSpecification (PackageSpecification const &spec) |
aa1e3b4d RC |
440 | { |
441 | _sourcePackage = spec; | |
442 | } | |
3c196821 RC |
443 | |
444 | packageversion | |
445 | _packageversion::sourcePackage () | |
446 | { | |
447 | if (!sourceVersion) | |
448 | { | |
449 | packagedb db; | |
450 | packagemeta * pkg; | |
451 | pkg = db.findSource (_sourcePackage); | |
452 | /* no valid source meta available, just return the default | |
453 | (blank) package version | |
454 | */ | |
455 | if (!pkg) | |
456 | return sourceVersion; | |
457 | set<packageversion>::iterator i=pkg->versions.begin(); | |
458 | while (i != pkg->versions.end()) | |
459 | { | |
460 | packageversion const & ver = * i; | |
461 | if (_sourcePackage.satisfies (ver)) | |
462 | sourceVersion = ver; | |
463 | ++i; | |
464 | } | |
465 | } | |
466 | return sourceVersion; | |
467 | } | |
468 | ||
469 | bool | |
470 | _packageversion::accessible() const | |
471 | { | |
e5662e0a RC |
472 | bool cached = true; |
473 | for (vector<packagesource>::const_iterator i = sources.begin(); | |
474 | i!=sources.end(); ++i) | |
475 | if (!i->Cached ()) | |
476 | cached = false; | |
477 | if (cached) | |
478 | return true; | |
479 | if (::source == IDC_SOURCE_CWD) | |
480 | return false; | |
481 | unsigned int retrievable = 0; | |
482 | for (vector<packagesource>::const_iterator i = sources.begin(); | |
483 | i!=sources.end(); ++i) | |
484 | if (i->sites.size() || i->Cached ()) | |
485 | retrievable += 1; | |
486 | return retrievable == sources.size(); | |
3c196821 RC |
487 | } |
488 | ||
489 | bool | |
490 | _packageversion::changeRequested () | |
491 | { | |
492 | return (picked || sourcePackage().picked()); | |
493 | } |