diff options
Diffstat (limited to 'cmdline/apt-internal-solver.cc')
| -rw-r--r-- | cmdline/apt-internal-solver.cc | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/cmdline/apt-internal-solver.cc b/cmdline/apt-internal-solver.cc new file mode 100644 index 000000000..25ecb7af1 --- /dev/null +++ b/cmdline/apt-internal-solver.cc @@ -0,0 +1,192 @@ +// -*- 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/cacheset.h> +#include <apt-pkg/strutl.h> +#include <apt-pkg/edsp.h> +#include <apt-pkg/algorithms.h> +#include <apt-pkg/fileutl.h> +#include <apt-pkg/pkgsystem.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,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", "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; +} + /*}}}*/ |