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authorDavid Kalnischkies <kalnischkies@gmail.com>2011-05-17 17:26:59 +0200
committerDavid Kalnischkies <kalnischkies@gmail.com>2011-05-17 17:26:59 +0200
commit2b82aa5553eef0cd16b5803047a6b60450bee92f (patch)
tree1c82ccc9c9ab5d5f0ec892af1193f5d69f8e61ec /cmdline/apt-internal-solver.cc
parent470a5c38519989313514ebaec6920aafee53d798 (diff)
parent27c69dd0b36e3da7b6061e597d755f5a60a0d31b (diff)
* Implement EDSP in libapt-pkg so that all front-ends which
use the internal resolver can now be used also with external ones as the usage is hidden in between the old API * provide two edsp solvers in apt-utils: - 'dump' to quickly output a complete scenario and - 'apt' to use the internal as an external resolver
Diffstat (limited to 'cmdline/apt-internal-solver.cc')
-rw-r--r--cmdline/apt-internal-solver.cc190
1 files changed, 190 insertions, 0 deletions
diff --git a/cmdline/apt-internal-solver.cc b/cmdline/apt-internal-solver.cc
new file mode 100644
index 000000000..ad00a0e23
--- /dev/null
+++ b/cmdline/apt-internal-solver.cc
@@ -0,0 +1,190 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* #####################################################################
+
+ cover around the internal solver to be able to run it like an external
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include <apt-pkg/error.h>
+#include <apt-pkg/cmndline.h>
+#include <apt-pkg/init.h>
+#include <apt-pkg/cachefile.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/edsp.h>
+#include <apt-pkg/algorithms.h>
+#include <apt-pkg/fileutl.h>
+
+#include <config.h>
+#include <apti18n.h>
+
+#include <unistd.h>
+#include <cstdio>
+ /*}}}*/
+
+// ShowHelp - Show a help screen /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ShowHelp(CommandLine &CmdL) {
+ ioprintf(std::cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
+ COMMON_ARCH,__DATE__,__TIME__);
+
+ std::cout <<
+ _("Usage: apt-internal-resolver\n"
+ "\n"
+ "apt-internal-resolver is an interface to use the current internal\n"
+ "like an external resolver for the APT family for debugging or alike\n"
+ "\n"
+ "Options:\n"
+ " -h This help text.\n"
+ " -q Loggable output - no progress indicator\n"
+ " -c=? Read this configuration file\n"
+ " -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
+ "apt.conf(5) manual pages for more information and options.\n"
+ " This APT has Super Cow Powers.\n");
+ return true;
+}
+ /*}}}*/
+int main(int argc,const char *argv[]) /*{{{*/
+{
+ CommandLine::Args Args[] = {
+ {'h',"help","help",0},
+ {'v',"version","version",0},
+ {'q',"quiet","quiet",CommandLine::IntLevel},
+ {'q',"silent","quiet",CommandLine::IntLevel},
+ {'c',"config-file",0,CommandLine::ConfigFile},
+ {'o',"option",0,CommandLine::ArbItem},
+ {0,0,0,0}};
+
+ CommandLine CmdL(Args,_config);
+ if (pkgInitConfig(*_config) == false ||
+ CmdL.Parse(argc,argv) == false) {
+ _error->DumpErrors();
+ return 2;
+ }
+
+ // See if the help should be shown
+ if (_config->FindB("help") == true ||
+ _config->FindB("version") == true) {
+ ShowHelp(CmdL);
+ return 1;
+ }
+
+ if (CmdL.FileList[0] != 0 && strcmp(CmdL.FileList[0], "scenario") == 0)
+ {
+ if (pkgInitSystem(*_config,_system) == false) {
+ std::cerr << "System could not be initialized!" << std::endl;
+ return 1;
+ }
+ pkgCacheFile CacheFile;
+ CacheFile.Open(NULL, false);
+ APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
+ FILE* output = stdout;
+ if (pkgset.empty() == true)
+ EDSP::WriteScenario(CacheFile, output);
+ else
+ EDSP::WriteLimitedScenario(CacheFile, output, pkgset);
+ fclose(output);
+ _error->DumpErrors(std::cerr);
+ return 0;
+ }
+
+ // Deal with stdout not being a tty
+ if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1)
+ _config->Set("quiet","1");
+
+ if (_config->FindI("quiet", 0) < 1)
+ _config->Set("Debug::EDSP::WriteSolution", true);
+
+ _config->Set("APT::Solver::Name", "internal");
+ _config->Set("edsp::scenario", "stdin");
+ int input = STDIN_FILENO;
+ FILE* output = stdout;
+ SetNonBlock(input, false);
+
+ EDSP::WriteProgress(0, "Start up solver…", output);
+
+ if (pkgInitSystem(*_config,_system) == false) {
+ std::cerr << "System could not be initialized!" << std::endl;
+ return 1;
+ }
+
+ EDSP::WriteProgress(1, "Read request…", output);
+
+ if (WaitFd(input, false, 5) == false)
+ std::cerr << "WAIT timed out in the resolver" << std::endl;
+
+ std::list<std::string> install, remove;
+ bool upgrade, distUpgrade, autoRemove;
+ if (EDSP::ReadRequest(input, install, remove, upgrade, distUpgrade, autoRemove) == false) {
+ std::cerr << "Parsing the request failed!" << std::endl;
+ return 2;
+ }
+
+ EDSP::WriteProgress(5, "Read scenario…", output);
+
+ pkgCacheFile CacheFile;
+ CacheFile.Open(NULL, false);
+
+ EDSP::WriteProgress(50, "Apply request on scenario…", output);
+
+ if (EDSP::ApplyRequest(install, remove, CacheFile) == false) {
+ std::cerr << "Failed to apply request to depcache!" << std::endl;
+ return 3;
+ }
+
+ pkgProblemResolver Fix(CacheFile);
+ for (std::list<std::string>::const_iterator i = remove.begin();
+ i != remove.end(); ++i) {
+ pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
+ Fix.Clear(P);
+ Fix.Protect(P);
+ Fix.Remove(P);
+ }
+
+ for (std::list<std::string>::const_iterator i = install.begin();
+ i != install.end(); ++i) {
+ pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
+ Fix.Clear(P);
+ Fix.Protect(P);
+ }
+
+ for (std::list<std::string>::const_iterator i = install.begin();
+ i != install.end(); ++i)
+ CacheFile->MarkInstall(CacheFile->FindPkg(*i), true);
+
+ EDSP::WriteProgress(60, "Call problemresolver on current scenario…", output);
+
+ if (upgrade == true) {
+ if (pkgAllUpgrade(CacheFile) == false) {
+ EDSP::WriteError("ERR_UNSOLVABLE_UPGRADE", "An upgrade error occured", output);
+ return 0;
+ }
+ } else if (distUpgrade == true) {
+ if (pkgDistUpgrade(CacheFile) == false) {
+ EDSP::WriteError("ERR_UNSOLVABLE_DIST_UPGRADE", "An dist-upgrade error occured", output);
+ return 0;
+ }
+ } else if (Fix.Resolve() == false) {
+ EDSP::WriteError("ERR_UNSOLVABLE", "An error occured", output);
+ return 0;
+ }
+
+ EDSP::WriteProgress(95, "Write solution…", output);
+
+ if (EDSP::WriteSolution(CacheFile, output) == false) {
+ std::cerr << "Failed to output the solution!" << std::endl;
+ return 4;
+ }
+
+ EDSP::WriteProgress(100, "Done", output);
+
+ bool const Errors = _error->PendingError();
+ if (_config->FindI("quiet",0) > 0)
+ _error->DumpErrors(std::cerr);
+ else
+ _error->DumpErrors(std::cerr, GlobalError::DEBUG);
+ return Errors == true ? 100 : 0;
+}
+ /*}}}*/