[apt.git] / cmdline / apt-internal-solver.cc

// -*- 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 (Fix.Resolve() == false) {
		EDSP::WriteError("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;
}
									/*}}}*/
Commit	Line	Data
4128c846 DK	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	/* #####################################################################
	4
	5	cover around the internal solver to be able to run it like an external
	6
	7	##################################################################### */
	8	/}}}/
	9	// Include Files /{{{/
	10	#include <apt-pkg/error.h>
	11	#include <apt-pkg/cmndline.h>
	12	#include <apt-pkg/init.h>
	13	#include <apt-pkg/cachefile.h>
	14	#include <apt-pkg/strutl.h>
	15	#include <apt-pkg/edsp.h>
	16	#include <apt-pkg/algorithms.h>
	17	#include <apt-pkg/fileutl.h>
	18
	19	#include <config.h>
	20	#include <apti18n.h>
	21
	22	#include <unistd.h>
	23	#include <cstdio>
	24	/}}}/
	25
	26	// ShowHelp - Show a help screen /{{{/
	27	// ---------------------------------------------------------------------
	28	/* */
	29	bool ShowHelp(CommandLine &CmdL) {
	30	ioprintf(std::cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
	31	COMMON_ARCH,__DATE__,__TIME__);
	32
	33	std::cout <<
	34	_("Usage: apt-internal-resolver\n"
	35	"\n"
	36	"apt-internal-resolver is an interface to use the current internal\n"
	37	"like an external resolver for the APT family for debugging or alike\n"
	38	"\n"
	39	"Options:\n"
	40	" -h This help text.\n"
	41	" -q Loggable output - no progress indicator\n"
	42	" -c=? Read this configuration file\n"
	43	" -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
	44	"apt.conf(5) manual pages for more information and options.\n"
	45	" This APT has Super Cow Powers.\n");
	46	return true;
	47	}
	48	/}}}/
	49	int main(int argc,const char argv[]) /{{{*/
	50	{
	51	CommandLine::Args Args[] = {
	52	{'h',"help","help",0},
	53	{'v',"version","version",0},
	54	{'q',"quiet","quiet",CommandLine::IntLevel},
	55	{'q',"silent","quiet",CommandLine::IntLevel},
904be352 DK	56	{'c',"config-file",0,CommandLine::ConfigFile},
904be352 DK	57	{'o',"option",0,CommandLine::ArbItem},
4128c846 DK	58	{0,0,0,0}};
	59
	60	CommandLine CmdL(Args,_config);
	61	if (pkgInitConfig(*_config) == false \|\|
	62	CmdL.Parse(argc,argv) == false) {
	63	_error->DumpErrors();
	64	return 2;
	65	}
	66
	67	// See if the help should be shown
	68	if (_config->FindB("help") == true \|\|
	69	_config->FindB("version") == true) {
	70	ShowHelp(CmdL);
	71	return 1;
	72	}
	73
904be352 DK	74	if (CmdL.FileList[0] != 0 && strcmp(CmdL.FileList[0], "scenario") == 0)
	75	{
	76	if (pkgInitSystem(*_config,_system) == false) {
	77	std::cerr << "System could not be initialized!" << std::endl;
	78	return 1;
	79	}
	80	pkgCacheFile CacheFile;
	81	CacheFile.Open(NULL, false);
	82	APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
	83	FILE* output = stdout;
	84	if (pkgset.empty() == true)
	85	EDSP::WriteScenario(CacheFile, output);
	86	else
	87	EDSP::WriteLimitedScenario(CacheFile, output, pkgset);
	88	fclose(output);
	89	_error->DumpErrors(std::cerr);
	90	return 0;
	91	}
	92
4128c846 DK	93	// Deal with stdout not being a tty
	94	if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1)
	95	_config->Set("quiet","1");
	96
	97	if (_config->FindI("quiet", 0) < 1)
	98	_config->Set("Debug::EDSP::WriteSolution", true);
	99
	100	_config->Set("APT::Solver::Name", "internal");
	101	_config->Set("edsp::scenario", "stdin");
	102	int input = STDIN_FILENO;
	103	FILE* output = stdout;
	104	SetNonBlock(input, false);
	105
e876223c DK	106	EDSP::WriteProgress(0, "Start up solver…", output);
e876223c DK	107
4128c846 DK	108	if (pkgInitSystem(*_config,_system) == false) {
	109	std::cerr << "System could not be initialized!" << std::endl;
	110	return 1;
	111	}
	112
e876223c DK	113	EDSP::WriteProgress(1, "Read request…", output);
e876223c DK	114
4128c846 DK	115	if (WaitFd(input, false, 5) == false)
	116	std::cerr << "WAIT timed out in the resolver" << std::endl;
	117
	118	std::list<std::string> install, remove;
	119	bool upgrade, distUpgrade, autoRemove;
	120	if (EDSP::ReadRequest(input, install, remove, upgrade, distUpgrade, autoRemove) == false) {
	121	std::cerr << "Parsing the request failed!" << std::endl;
	122	return 2;
	123	}
	124
e876223c DK	125	EDSP::WriteProgress(5, "Read scenario…", output);
e876223c DK	126
4128c846 DK	127	pkgCacheFile CacheFile;
	128	CacheFile.Open(NULL, false);
	129
e876223c DK	130	EDSP::WriteProgress(50, "Apply request on scenario…", output);
e876223c DK	131
4128c846 DK	132	if (EDSP::ApplyRequest(install, remove, CacheFile) == false) {
	133	std::cerr << "Failed to apply request to depcache!" << std::endl;
	134	return 3;
	135	}
d9933172 DK	136
	137	pkgProblemResolver Fix(CacheFile);
	138	for (std::list<std::string>::const_iterator i = remove.begin();
	139	i != remove.end(); ++i) {
	140	pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
	141	Fix.Clear(P);
	142	Fix.Protect(P);
	143	Fix.Remove(P);
	144	}
	145
	146	for (std::list<std::string>::const_iterator i = install.begin();
	147	i != install.end(); ++i) {
	148	pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
	149	Fix.Clear(P);
	150	Fix.Protect(P);
	151	}
	152
4128c846 DK	153	for (std::list<std::string>::const_iterator i = install.begin();
	154	i != install.end(); ++i)
	155	CacheFile->MarkInstall(CacheFile->FindPkg(*i), true);
	156
e876223c	157	EDSP::WriteProgress(60, "Call problemresolver on current scenario…", output);
d9933172	158
4128c846 DK	159	if (Fix.Resolve() == false) {
	160	EDSP::WriteError("An error occured", output);
	161	return 0;
	162	}
	163
e876223c DK	164	EDSP::WriteProgress(95, "Write solution…", output);
e876223c DK	165
4128c846 DK	166	if (EDSP::WriteSolution(CacheFile, output) == false) {
	167	std::cerr << "Failed to output the solution!" << std::endl;
	168	return 4;
	169	}
	170
e876223c DK	171	EDSP::WriteProgress(100, "Done", output);
e876223c DK	172
4128c846 DK	173	bool const Errors = _error->PendingError();
4128c846 DK	174	if (_config->FindI("quiet",0) > 0)
904be352	175	_error->DumpErrors(std::cerr);
4128c846	176	else
904be352	177	_error->DumpErrors(std::cerr, GlobalError::DEBUG);
4128c846 DK	178	return Errors == true ? 100 : 0;
	179	}
	180	/}}}/