summaryrefslogtreecommitdiff
path: root/apt-pkg/cacheset.cc
blob: 8fcffaf9a47690108070124d0f8c64fac852a4c5 (plain)
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
// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
/* ######################################################################

   Simple wrapper around a std::set to provide a similar interface to
   a set of cache structures as to the complete set of all structures
   in the pkgCache. Currently only Package is supported.

   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/cacheset.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/versionmatch.h>

#include <apti18n.h>

#include <vector>

#include <regex.h>
									/*}}}*/
namespace APT {
// FromRegEx - Return all packages in the cache matching a pattern	/*{{{*/
PackageSet PackageSet::FromRegEx(pkgCacheFile &Cache, std::string pattern, std::ostream &out) {
	PackageSet pkgset;
	std::string arch = "native";
	static const char * const isregex = ".?+*|[^$";

	if (pattern.find_first_of(isregex) == std::string::npos)
		return pkgset;

	size_t archfound = pattern.find_last_of(':');
	if (archfound != std::string::npos) {
		arch = pattern.substr(archfound+1);
		if (arch.find_first_of(isregex) == std::string::npos)
			pattern.erase(archfound);
		else
			arch = "native";
	}

	regex_t Pattern;
	int Res;
	if ((Res = regcomp(&Pattern, pattern.c_str() , REG_EXTENDED | REG_ICASE | REG_NOSUB)) != 0) {
		char Error[300];
		regerror(Res, &Pattern, Error, sizeof(Error));
		_error->Error(_("Regex compilation error - %s"), Error);
		return pkgset;
	}

	for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp)
	{
		if (regexec(&Pattern, Grp.Name(), 0, 0, 0) != 0)
			continue;
		pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
		if (Pkg.end() == true) {
			if (archfound == std::string::npos) {
				std::vector<std::string> archs = APT::Configuration::getArchitectures();
				for (std::vector<std::string>::const_iterator a = archs.begin();
				     a != archs.end() && Pkg.end() != true; ++a)
					Pkg = Grp.FindPkg(*a);
			}
			if (Pkg.end() == true)
				continue;
		}

		ioprintf(out, _("Note, selecting %s for regex '%s'\n"),
			 Pkg.FullName(true).c_str(), pattern.c_str());

		pkgset.insert(Pkg);
	}

	regfree(&Pattern);

	return pkgset;
}
									/*}}}*/
// FromCommandLine - Return all packages specified on commandline	/*{{{*/
PackageSet PackageSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline, std::ostream &out) {
	PackageSet pkgset;
	for (const char **I = cmdline; *I != 0; ++I) {
		PackageSet pset = FromString(Cache, *I, out);
		pkgset.insert(pset.begin(), pset.end());
	}
	return pkgset;
}
									/*}}}*/
// FromString - Return all packages matching a specific string		/*{{{*/
PackageSet PackageSet::FromString(pkgCacheFile &Cache, std::string const &str, std::ostream &out) {
	std::string pkg = str;
	size_t archfound = pkg.find_last_of(':');
	std::string arch;
	if (archfound != std::string::npos) {
		arch = pkg.substr(archfound+1);
		pkg.erase(archfound);
	}

	pkgCache::PkgIterator Pkg;
	if (arch.empty() == true) {
		pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
		if (Grp.end() == false)
			Pkg = Grp.FindPreferredPkg();
	} else
		Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);

	if (Pkg.end() == false) {
		PackageSet pkgset;
		pkgset.insert(Pkg);
		return pkgset;
	}
	PackageSet regex = FromRegEx(Cache, str, out);
	if (regex.empty() == true)
		_error->Warning(_("Unable to locate package %s"), str.c_str());
	return regex;
}
									/*}}}*/
// FromCommandLine - Return all versions specified on commandline	/*{{{*/
APT::VersionSet VersionSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
		APT::VersionSet::Version const &fallback, std::ostream &out) {
	VersionSet verset;
	for (const char **I = cmdline; *I != 0; ++I) {
		std::string pkg = *I;
		std::string ver;
		bool verIsRel = false;
		size_t const vertag = pkg.find_last_of("/=");
		if (vertag != string::npos) {
			ver = pkg.substr(vertag+1);
			verIsRel = (pkg[vertag] == '/');
			pkg.erase(vertag);
		}
		PackageSet pkgset = PackageSet::FromString(Cache, pkg.c_str(), out);
		for (PackageSet::const_iterator P = pkgset.begin();
		     P != pkgset.end(); ++P) {
			if (vertag != string::npos) {
				pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
							pkgVersionMatch::Version));
				pkgCache::VerIterator V = Match.Find(P);
				if (V.end() == true) {
					if (verIsRel == true)
						_error->Error(_("Release '%s' for '%s' was not found"),
								ver.c_str(), P.FullName(true).c_str());
					else
						_error->Error(_("Version '%s' for '%s' was not found"),
								ver.c_str(), P.FullName(true).c_str());
					continue;
				}
				if (strcmp(ver.c_str(), V.VerStr()) != 0)
					ioprintf(out, _("Selected version %s (%s) for %s\n"),
						 V.VerStr(), V.RelStr().c_str(), P.FullName(true).c_str());
				verset.insert(V);
			} else {
				pkgCache::VerIterator V;
				switch(fallback) {
				case VersionSet::ALL:
					for (V = P.VersionList(); V.end() != true; ++V)
						verset.insert(V);
					break;
				case VersionSet::CANDANDINST:
					verset.insert(getInstalledVer(Cache, P));
					verset.insert(getCandidateVer(Cache, P));
					break;
				case VersionSet::CANDIDATE:
					verset.insert(getCandidateVer(Cache, P));
					break;
				case VersionSet::INSTALLED:
					verset.insert(getInstalledVer(Cache, P));
					break;
				case VersionSet::CANDINST:
					V = getCandidateVer(Cache, P, true);
					if (V.end() == true)
						V = getInstalledVer(Cache, P, true);
					if (V.end() == false)
						verset.insert(V);
					else
						_error->Error(_("Can't select installed nor candidate version from package %s as it has neither of them"), P.FullName(true).c_str());
					break;
				case VersionSet::INSTCAND:
					V = getInstalledVer(Cache, P, true);
					if (V.end() == true)
						V = getCandidateVer(Cache, P, true);
					if (V.end() == false)
						verset.insert(V);
					else
						_error->Error(_("Can't select installed nor candidate version from package %s as it has neither of them"), P.FullName(true).c_str());
					break;
				case VersionSet::NEWEST:
					if (P->VersionList != 0)
						verset.insert(P.VersionList());
					else
						_error->Error(_("Can't select newest version from package %s as it is purely virtual"), P.FullName(true).c_str());
					break;
				}
			}
		}
	}
	return verset;
}
									/*}}}*/
// getCandidateVer - Returns the candidate version of the given package	/*{{{*/
pkgCache::VerIterator VersionSet::getCandidateVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg, bool const &AllowError) {
	if (unlikely(Cache.BuildDepCache() == false))
		return pkgCache::VerIterator(*Cache);
	pkgCache::VerIterator Cand = Cache[Pkg].CandidateVerIter(Cache);
	if (AllowError == false && Cand.end() == true)
		_error->Error(_("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
	return Cand;
}
									/*}}}*/
// getInstalledVer - Returns the installed version of the given package	/*{{{*/
pkgCache::VerIterator VersionSet::getInstalledVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg, bool const &AllowError) {
	if (AllowError == false && Pkg->CurrentVer == 0)
		_error->Error(_("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
	return Pkg.CurrentVer();
}
									/*}}}*/
}