[apt.git] / apt-pkg / edsp.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
/* ######################################################################
   Set of methods to help writing and reading everything needed for EDSP
   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include <apt-pkg/edsp.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/version.h>
#include <apt-pkg/policy.h>
#include <apt-pkg/tagfile.h>

#include <apti18n.h>
#include <limits>

#include <stdio.h>
									/*}}}*/

// EDSP::WriteScenario - to the given file descriptor			/*{{{*/
bool EDSP::WriteScenario(pkgDepCache &Cache, FILE* output)
{
   // we could use pkgCache::DepType and ::Priority, but these would be lokalized strings…
   const char * const PrioMap[] = {0, "important", "required", "standard",
				   "optional", "extra"};
   const char * const DepMap[] = {"", "Depends", "PreDepends", "Suggests",
				  "Recommends" , "Conflicts", "Replaces",
				  "Obsoletes", "Breaks", "Enhances"};

   for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
   {
      for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
      {
	 fprintf(output, "Package: %s\n", Pkg.Name());
	 fprintf(output, "Architecture: %s\n", Ver.Arch());
	 fprintf(output, "Version: %s\n", Ver.VerStr());
	 if (Pkg.CurrentVer() == Ver)
	    fprintf(output, "Installed: yes\n");
	 if (Pkg->SelectedState == pkgCache::State::Hold)
	    fprintf(output, "Hold: yes\n");
	 fprintf(output, "APT-ID: %d\n", Ver->ID);
	 fprintf(output, "Priority: %s\n", PrioMap[Ver->Priority]);
	 if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
	    fprintf(output, "Essential: yes\n");
	 fprintf(output, "Section: %s\n", Ver.Section());
	 if (Ver->MultiArch == pkgCache::Version::Allowed || Ver->MultiArch == pkgCache::Version::AllAllowed)
	    fprintf(output, "Multi-Arch: allowed\n");
	 else if (Ver->MultiArch == pkgCache::Version::Foreign || Ver->MultiArch == pkgCache::Version::AllForeign)
	    fprintf(output, "Multi-Arch: foreign\n");
	 else if (Ver->MultiArch == pkgCache::Version::Same)
	    fprintf(output, "Multi-Arch: same\n");
	 signed short Pin = std::numeric_limits<signed short>::min();
	 for (pkgCache::VerFileIterator File = Ver.FileList(); File.end() == false; ++File) {
	    signed short const p = Cache.GetPolicy().GetPriority(File.File());
	    if (Pin < p)
	       Pin = p;
	 }
	 fprintf(output, "APT-Pin: %d\n", Pin);
	 if (Cache.GetCandidateVer(Pkg) == Ver)
	    fprintf(output, "APT-Candidate: yes\n");
	 if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
	    fprintf(output, "APT-Automatic: yes\n");
	 std::string dependencies[pkgCache::Dep::Enhances + 1];
	 bool orGroup = false;
	 for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
	 {
	    // Ignore implicit dependencies for multiarch here
	    if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0)
	       continue;
	    if (orGroup == false)
	       dependencies[Dep->Type].append(", ");
	    dependencies[Dep->Type].append(Dep.TargetPkg().Name());
	    if (Dep->Version != 0)
	       dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")");
	    if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
	    {
	       dependencies[Dep->Type].append(" | ");
	       orGroup = true;
	    }
	    else
	       orGroup = false;
	 }
	 for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i)
	    if (dependencies[i].empty() == false)
	       fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2);
	 string provides;
	 for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
	 {
	    // Ignore implicit provides for multiarch here
	    if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 || strcmp(Pkg.Name(),Prv.Name()) == 0)
	       continue;
	    provides.append(", ").append(Prv.Name());
	 }
	 if (provides.empty() == false)
	    fprintf(output, "Provides: %s\n", provides.c_str()+2);


	 fprintf(output, "\n");
      }
   }
   return true;
}
									/*}}}*/
// EDSP::WriteRequest - to the given file descriptor			/*{{{*/
bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
			bool const DistUpgrade, bool const AutoRemove)
{
   string del, inst;
   for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
   {
      string* req;
      if (Cache[Pkg].Delete() == true)
	 req = &del;
      else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
	 req = &inst;
      else
	 continue;
      req->append(" ").append(Pkg.FullName());
   }
   fprintf(output, "Request: EDSP 0.2\n");
   if (del.empty() == false)
      fprintf(output, "Remove: %s\n", del.c_str()+1);
   if (inst.empty() == false)
      fprintf(output, "Install: %s\n", inst.c_str()+1);
   if (Upgrade == true)
      fprintf(output, "Upgrade: yes\n");
   if (DistUpgrade == true)
      fprintf(output, "Dist-Upgrade: yes\n");
   if (AutoRemove == true)
      fprintf(output, "Autoremove: yes\n");
   if (_config->FindB("APT::Solver::Strict-Pinning", true) == false)
      fprintf(output, "Strict-Pinning: no\n");
   string solverpref("APT::Solver::");
   solverpref.append(_config->Find("APT::Solver::Name", "internal")).append("::Preferences");
   if (_config->Exists(solverpref) == true)
      fprintf(output, "Preferences: %s\n", _config->Find(solverpref,"").c_str());
   fprintf(output, "\n");

   return true;
}
									/*}}}*/
// EDSP::ReadResponse - from the given file descriptor			/*{{{*/
bool EDSP::ReadResponse(int const input, pkgDepCache &Cache) {
	FileFd in;
	in.OpenDescriptor(input, FileFd::ReadOnly);
	pkgTagFile response(&in);
	pkgTagSection section;

	/* We build an map id to mmap offset here
	   In theory we could use the offset as ID, but then VersionCount
	   couldn't be used to create other versionmappings anymore and it
	   would be too easy for a (buggy) solver to segfault APT… */
	unsigned long long const VersionCount = Cache.Head().VersionCount;
	unsigned long VerIdx[VersionCount];
	for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; ++P)
		for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V)
			VerIdx[V->ID] = V.Index();

	while (response.Step(section) == true) {
		std::string type;
		if (section.Exists("Install") == true)
			type = "Install";
		else if (section.Exists("Remove") == true)
			type = "Remove";
		//FIXME: handle progress
		else
			continue;

		size_t const id = section.FindULL(type.c_str(), VersionCount);
		if (id == VersionCount) {
			_error->Warning("Unable to parse %s request with id value '%s'!", type.c_str(), section.FindS(type.c_str()).c_str());
			continue;
		} else if (id > Cache.Head().VersionCount) {
			_error->Warning("ID value '%s' in %s request stanza is to high to refer to a known version!", section.FindS(type.c_str()).c_str(), type.c_str());
			continue;
		}

		pkgCache::VerIterator Ver(Cache.GetCache(), Cache.GetCache().VerP + VerIdx[id]);
		Cache.SetCandidateVersion(Ver);
		if (type == "Install")
			Cache.MarkInstall(Ver.ParentPkg(), false, false);
		else if (type == "Remove")
			Cache.MarkDelete(Ver.ParentPkg(), false);
	}
	return true;
}
									/*}}}*/
// EDSP::ReadLine - first line from the given file descriptor		/*{{{*/
// ---------------------------------------------------------------------
/* Little helper method to read a complete line into a string. Similar to
   fgets but we need to use the low-level read() here as otherwise the
   listparser will be confused later on as mixing of fgets and read isn't
   a supported action according to the manpages and results are undefined */
bool EDSP::ReadLine(int const input, std::string &line) {
	char one;
	ssize_t data = 0;
	line.erase();
	line.reserve(100);
	while ((data = read(input, &one, sizeof(one))) != -1) {
		if (data != 1)
			continue;
		if (one == '\n')
			return true;
		if (one == '\r')
			continue;
		if (line.empty() == true && isblank(one) != 0)
			continue;
		line += one;
	}
	return false;
}
									/*}}}*/
// EDSP::StringToBool - convert yes/no to bool				/*{{{*/
// ---------------------------------------------------------------------
/* we are not as lazy as we are in the global StringToBool as we really
   only accept yes/no here - but we will ignore leading spaces */
bool EDSP::StringToBool(char const *answer, bool const defValue) {
   for (; isspace(*answer) != 0; ++answer);
   if (strncasecmp(answer, "yes", 3) == 0)
      return true;
   else if (strncasecmp(answer, "no", 2) == 0)
      return false;
   else
      _error->Warning("Value '%s' is not a boolean 'yes' or 'no'!", answer);
   return defValue;
}
									/*}}}*/
// EDSP::ReadRequest - first stanza from the given file descriptor	/*{{{*/
bool EDSP::ReadRequest(int const input, std::list<std::string> &install,
			std::list<std::string> &remove, bool &upgrade,
			bool &distUpgrade, bool &autoRemove)
{
   install.clear();
   remove.clear();
   upgrade = false;
   distUpgrade = false;
   autoRemove = false;
   std::string line;
   while (ReadLine(input, line) == true)
   {
      // Skip empty lines before request
      if (line.empty() == true)
	 continue;
      // The first Tag must be a request, so search for it
      if (line.compare(0, 8, "Request:") != 0)
	 continue;

      while (ReadLine(input, line) == true)
      {
	 // empty lines are the end of the request
	 if (line.empty() == true)
	    return true;

	 std::list<std::string> *request = NULL;
	 if (line.compare(0, 8, "Install:") == 0)
	 {
	    line.erase(0, 8);
	    request = &install;
	 }
	 else if (line.compare(0, 7, "Remove:") == 0)
	 {
	    line.erase(0, 7);
	    request = &remove;
	 }
	 else if (line.compare(0, 8, "Upgrade:") == 0)
	    upgrade = EDSP::StringToBool(line.c_str() + 9, false);
	 else if (line.compare(0, 13, "Dist-Upgrade:") == 0)
	    distUpgrade = EDSP::StringToBool(line.c_str() + 14, false);
	 else if (line.compare(0, 11, "Autoremove:") == 0)
	    autoRemove = EDSP::StringToBool(line.c_str() + 12, false);
	 else
	    _error->Warning("Unknown line in EDSP Request stanza: %s", line.c_str());

	 if (request == NULL)
	    continue;
	 size_t end = line.length();
	 do {
	    size_t begin = line.rfind(' ');
	    if (begin == std::string::npos)
	    {
	       request->push_back(line.substr(0, end));
	       break;
	    }
	    else if (begin < end)
	       request->push_back(line.substr(begin + 1, end));
	    line.erase(begin);
	    end = line.find_last_not_of(' ');
	 } while (end != std::string::npos);
      }
   }
   return false;
}
									/*}}}*/
// EDSP::ApplyRequest - first stanza from the given file descriptor	/*{{{*/
bool EDSP::ApplyRequest(std::list<std::string> const &install,
			 std::list<std::string> const &remove,
			 pkgDepCache &Cache)
{
	for (std::list<std::string>::const_iterator i = install.begin();
	     i != install.end(); ++i)
		Cache.MarkInstall(Cache.FindPkg(*i), false);

	for (std::list<std::string>::const_iterator i = remove.begin();
	     i != remove.end(); ++i)
		Cache.MarkDelete(Cache.FindPkg(*i));
	return true;
}
									/*}}}*/
// EDSP::WriteSolution - to the given file descriptor			/*{{{*/
bool EDSP::WriteSolution(pkgDepCache &Cache, FILE* output)
{
   bool const Debug = _config->FindB("Debug::EDSP::WriteSolution", false);
   for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
   {
      if (Cache[Pkg].Delete() == true)
	 fprintf(output, "Remove: %d\n", Cache.GetCandidateVer(Pkg)->ID);
      else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
	 fprintf(output, "Install: %d\n", Cache.GetCandidateVer(Pkg)->ID);
      else
	 continue;
      if (Debug == true)
	 fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Cache.GetCandidateVer(Pkg).VerStr());
      fprintf(output, "\n");
   }

   return true;
}
									/*}}}*/
bool EDSP::WriteError(std::string const &message, FILE* output) { return false; }
Commit	Line	Data
6d38011b DK	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	/* ######################################################################
	4	Set of methods to help writing and reading everything needed for EDSP
	5	##################################################################### */
	6	/}}}/
	7	// Include Files /{{{/
c3b85126	8	#include <apt-pkg/edsp.h>
6d38011b DK	9	#include <apt-pkg/error.h>
	10	#include <apt-pkg/configuration.h>
	11	#include <apt-pkg/version.h>
	12	#include <apt-pkg/policy.h>
2029276f	13	#include <apt-pkg/tagfile.h>
6d38011b DK	14
	15	#include <apti18n.h>
	16	#include <limits>
	17
	18	#include <stdio.h>
	19	/}}}/
	20
c3b85126 DK	21	// EDSP::WriteScenario - to the given file descriptor /{{{/
c3b85126 DK	22	bool EDSP::WriteScenario(pkgDepCache &Cache, FILE* output)
6d38011b DK	23	{
	24	// we could use pkgCache::DepType and ::Priority, but these would be lokalized strings…
	25	const char * const PrioMap[] = {0, "important", "required", "standard",
	26	"optional", "extra"};
	27	const char * const DepMap[] = {"", "Depends", "PreDepends", "Suggests",
	28	"Recommends" , "Conflicts", "Replaces",
	29	"Obsoletes", "Breaks", "Enhances"};
	30
	31	for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
	32	{
	33	for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
	34	{
	35	fprintf(output, "Package: %s\n", Pkg.Name());
	36	fprintf(output, "Architecture: %s\n", Ver.Arch());
	37	fprintf(output, "Version: %s\n", Ver.VerStr());
	38	if (Pkg.CurrentVer() == Ver)
	39	fprintf(output, "Installed: yes\n");
	40	if (Pkg->SelectedState == pkgCache::State::Hold)
	41	fprintf(output, "Hold: yes\n");
2a33cb16	42	fprintf(output, "APT-ID: %d\n", Ver->ID);
6d38011b DK	43	fprintf(output, "Priority: %s\n", PrioMap[Ver->Priority]);
	44	if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
	45	fprintf(output, "Essential: yes\n");
	46	fprintf(output, "Section: %s\n", Ver.Section());
	47	if (Ver->MultiArch == pkgCache::Version::Allowed \|\| Ver->MultiArch == pkgCache::Version::AllAllowed)
	48	fprintf(output, "Multi-Arch: allowed\n");
	49	else if (Ver->MultiArch == pkgCache::Version::Foreign \|\| Ver->MultiArch == pkgCache::Version::AllForeign)
	50	fprintf(output, "Multi-Arch: foreign\n");
	51	else if (Ver->MultiArch == pkgCache::Version::Same)
	52	fprintf(output, "Multi-Arch: same\n");
	53	signed short Pin = std::numeric_limits<signed short>::min();
	54	for (pkgCache::VerFileIterator File = Ver.FileList(); File.end() == false; ++File) {
	55	signed short const p = Cache.GetPolicy().GetPriority(File.File());
	56	if (Pin < p)
	57	Pin = p;
	58	}
	59	fprintf(output, "APT-Pin: %d\n", Pin);
	60	if (Cache.GetCandidateVer(Pkg) == Ver)
	61	fprintf(output, "APT-Candidate: yes\n");
	62	if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
	63	fprintf(output, "APT-Automatic: yes\n");
	64	std::string dependencies[pkgCache::Dep::Enhances + 1];
	65	bool orGroup = false;
	66	for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
	67	{
	68	// Ignore implicit dependencies for multiarch here
	69	if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0)
	70	continue;
	71	if (orGroup == false)
	72	dependencies[Dep->Type].append(", ");
	73	dependencies[Dep->Type].append(Dep.TargetPkg().Name());
	74	if (Dep->Version != 0)
	75	dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")");
	76	if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
	77	{
	78	dependencies[Dep->Type].append(" \| ");
	79	orGroup = true;
	80	}
	81	else
	82	orGroup = false;
	83	}
	84	for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i)
	85	if (dependencies[i].empty() == false)
	86	fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2);
	87	string provides;
	88	for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
	89	{
	90	// Ignore implicit provides for multiarch here
	91	if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 \|\| strcmp(Pkg.Name(),Prv.Name()) == 0)
	92	continue;
	93	provides.append(", ").append(Prv.Name());
	94	}
	95	if (provides.empty() == false)
	96	fprintf(output, "Provides: %s\n", provides.c_str()+2);
	97
	98
	99	fprintf(output, "\n");
	100	}
	101	}
	102	return true;
	103	}
	104	/}}}/
c3b85126	105	// EDSP::WriteRequest - to the given file descriptor /{{{/
93794bc9 DK	106	bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
93794bc9 DK	107	bool const DistUpgrade, bool const AutoRemove)
6d38011b	108	{
93794bc9	109	string del, inst;
6d38011b DK	110	for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
	111	{
	112	string* req;
	113	if (Cache[Pkg].Delete() == true)
	114	req = &del;
93794bc9	115	else if (Cache[Pkg].NewInstall() == true \|\| Cache[Pkg].Upgrade() == true)
6d38011b	116	req = &inst;
6d38011b DK	117	else
6d38011b DK	118	continue;
6d5bd614	119	req->append(" ").append(Pkg.FullName());
6d38011b	120	}
93794bc9	121	fprintf(output, "Request: EDSP 0.2\n");
6d38011b	122	if (del.empty() == false)
6d5bd614	123	fprintf(output, "Remove: %s\n", del.c_str()+1);
6d38011b	124	if (inst.empty() == false)
6d5bd614	125	fprintf(output, "Install: %s\n", inst.c_str()+1);
93794bc9 DK	126	if (Upgrade == true)
	127	fprintf(output, "Upgrade: yes\n");
	128	if (DistUpgrade == true)
	129	fprintf(output, "Dist-Upgrade: yes\n");
	130	if (AutoRemove == true)
	131	fprintf(output, "Autoremove: yes\n");
	132	if (_config->FindB("APT::Solver::Strict-Pinning", true) == false)
	133	fprintf(output, "Strict-Pinning: no\n");
	134	string solverpref("APT::Solver::");
	135	solverpref.append(_config->Find("APT::Solver::Name", "internal")).append("::Preferences");
6d5bd614	136	if (_config->Exists(solverpref) == true)
93794bc9	137	fprintf(output, "Preferences: %s\n", _config->Find(solverpref,"").c_str());
6d5bd614	138	fprintf(output, "\n");
6d38011b	139
e3674d91 DK	140	return true;
	141	}
	142	/}}}/
2029276f DK	143	// EDSP::ReadResponse - from the given file descriptor /{{{/
	144	bool EDSP::ReadResponse(int const input, pkgDepCache &Cache) {
	145	FileFd in;
	146	in.OpenDescriptor(input, FileFd::ReadOnly);
	147	pkgTagFile response(&in);
	148	pkgTagSection section;
2a33cb16 DK	149
	150	/* We build an map id to mmap offset here
	151	In theory we could use the offset as ID, but then VersionCount
	152	couldn't be used to create other versionmappings anymore and it
	153	would be too easy for a (buggy) solver to segfault APT… */
	154	unsigned long long const VersionCount = Cache.Head().VersionCount;
	155	unsigned long VerIdx[VersionCount];
	156	for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; ++P)
	157	for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V)
	158	VerIdx[V->ID] = V.Index();
	159
2029276f DK	160	while (response.Step(section) == true) {
	161	std::string type;
	162	if (section.Exists("Install") == true)
	163	type = "Install";
	164	else if (section.Exists("Remove") == true)
	165	type = "Remove";
	166	//FIXME: handle progress
	167	else
	168	continue;
29099cb6	169
2a33cb16 DK	170	size_t const id = section.FindULL(type.c_str(), VersionCount);
2a33cb16 DK	171	if (id == VersionCount) {
69a78835 DK	172	_error->Warning("Unable to parse %s request with id value '%s'!", type.c_str(), section.FindS(type.c_str()).c_str());
69a78835 DK	173	continue;
2a33cb16 DK	174	} else if (id > Cache.Head().VersionCount) {
	175	_error->Warning("ID value '%s' in %s request stanza is to high to refer to a known version!", section.FindS(type.c_str()).c_str(), type.c_str());
	176	continue;
69a78835	177	}
2029276f	178
2a33cb16	179	pkgCache::VerIterator Ver(Cache.GetCache(), Cache.GetCache().VerP + VerIdx[id]);
69a78835 DK	180	Cache.SetCandidateVersion(Ver);
	181	if (type == "Install")
	182	Cache.MarkInstall(Ver.ParentPkg(), false, false);
	183	else if (type == "Remove")
	184	Cache.MarkDelete(Ver.ParentPkg(), false);
2029276f DK	185	}
	186	return true;
	187	}
	188	/}}}/
6d5bd614 DK	189	// EDSP::ReadLine - first line from the given file descriptor /{{{/
	190	// ---------------------------------------------------------------------
	191	/* Little helper method to read a complete line into a string. Similar to
	192	fgets but we need to use the low-level read() here as otherwise the
	193	listparser will be confused later on as mixing of fgets and read isn't
2029276f	194	a supported action according to the manpages and results are undefined */
6d5bd614 DK	195	bool EDSP::ReadLine(int const input, std::string &line) {
	196	char one;
	197	ssize_t data = 0;
	198	line.erase();
	199	line.reserve(100);
	200	while ((data = read(input, &one, sizeof(one))) != -1) {
	201	if (data != 1)
	202	continue;
	203	if (one == '\n')
	204	return true;
	205	if (one == '\r')
	206	continue;
	207	if (line.empty() == true && isblank(one) != 0)
	208	continue;
	209	line += one;
	210	}
	211	return false;
	212	}
	213	/}}}/
40795fca DK	214	// EDSP::StringToBool - convert yes/no to bool /{{{/
	215	// ---------------------------------------------------------------------
	216	/* we are not as lazy as we are in the global StringToBool as we really
	217	only accept yes/no here - but we will ignore leading spaces */
	218	bool EDSP::StringToBool(char const *answer, bool const defValue) {
	219	for (; isspace(*answer) != 0; ++answer);
	220	if (strncasecmp(answer, "yes", 3) == 0)
	221	return true;
	222	else if (strncasecmp(answer, "no", 2) == 0)
	223	return false;
	224	else
	225	_error->Warning("Value '%s' is not a boolean 'yes' or 'no'!", answer);
	226	return defValue;
	227	}
	228	/}}}/
6d5bd614 DK	229	// EDSP::ReadRequest - first stanza from the given file descriptor /{{{/
6d5bd614 DK	230	bool EDSP::ReadRequest(int const input, std::list<std::string> &install,
40795fca DK	231	std::list<std::string> &remove, bool &upgrade,
40795fca DK	232	bool &distUpgrade, bool &autoRemove)
6d5bd614	233	{
40795fca DK	234	install.clear();
	235	remove.clear();
	236	upgrade = false;
	237	distUpgrade = false;
	238	autoRemove = false;
6d5bd614 DK	239	std::string line;
	240	while (ReadLine(input, line) == true)
	241	{
	242	// Skip empty lines before request
	243	if (line.empty() == true)
	244	continue;
	245	// The first Tag must be a request, so search for it
40795fca	246	if (line.compare(0, 8, "Request:") != 0)
6d5bd614 DK	247	continue;
	248
	249	while (ReadLine(input, line) == true)
	250	{
	251	// empty lines are the end of the request
	252	if (line.empty() == true)
	253	return true;
	254
	255	std::list<std::string> *request = NULL;
40795fca	256	if (line.compare(0, 8, "Install:") == 0)
6d5bd614	257	{
40795fca	258	line.erase(0, 8);
6d5bd614 DK	259	request = &install;
6d5bd614 DK	260	}
40795fca	261	else if (line.compare(0, 7, "Remove:") == 0)
6d5bd614	262	{
40795fca	263	line.erase(0, 7);
6d5bd614 DK	264	request = &remove;
6d5bd614 DK	265	}
40795fca DK	266	else if (line.compare(0, 8, "Upgrade:") == 0)
	267	upgrade = EDSP::StringToBool(line.c_str() + 9, false);
	268	else if (line.compare(0, 13, "Dist-Upgrade:") == 0)
	269	distUpgrade = EDSP::StringToBool(line.c_str() + 14, false);
	270	else if (line.compare(0, 11, "Autoremove:") == 0)
	271	autoRemove = EDSP::StringToBool(line.c_str() + 12, false);
	272	else
	273	_error->Warning("Unknown line in EDSP Request stanza: %s", line.c_str());
	274
6d5bd614 DK	275	if (request == NULL)
	276	continue;
	277	size_t end = line.length();
	278	do {
	279	size_t begin = line.rfind(' ');
	280	if (begin == std::string::npos)
	281	{
40795fca	282	request->push_back(line.substr(0, end));
6d5bd614 DK	283	break;
	284	}
	285	else if (begin < end)
	286	request->push_back(line.substr(begin + 1, end));
	287	line.erase(begin);
	288	end = line.find_last_not_of(' ');
	289	} while (end != std::string::npos);
	290	}
	291	}
	292	return false;
	293	}
	294	/}}}/
	295	// EDSP::ApplyRequest - first stanza from the given file descriptor /{{{/
c3b85126	296	bool EDSP::ApplyRequest(std::list<std::string> const &install,
29099cb6 DK	297	std::list<std::string> const &remove,
29099cb6 DK	298	pkgDepCache &Cache)
6d5bd614 DK	299	{
	300	for (std::list<std::string>::const_iterator i = install.begin();
	301	i != install.end(); ++i)
	302	Cache.MarkInstall(Cache.FindPkg(*i), false);
	303
	304	for (std::list<std::string>::const_iterator i = remove.begin();
	305	i != remove.end(); ++i)
	306	Cache.MarkDelete(Cache.FindPkg(*i));
	307	return true;
	308	}
	309	/}}}/
c3b85126 DK	310	// EDSP::WriteSolution - to the given file descriptor /{{{/
c3b85126 DK	311	bool EDSP::WriteSolution(pkgDepCache &Cache, FILE* output)
e3674d91	312	{
6d5bd614	313	bool const Debug = _config->FindB("Debug::EDSP::WriteSolution", false);
e3674d91 DK	314	for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
	315	{
	316	if (Cache[Pkg].Delete() == true)
	317	fprintf(output, "Remove: %d\n", Cache.GetCandidateVer(Pkg)->ID);
	318	else if (Cache[Pkg].NewInstall() == true \|\| Cache[Pkg].Upgrade() == true)
	319	fprintf(output, "Install: %d\n", Cache.GetCandidateVer(Pkg)->ID);
	320	else
	321	continue;
	322	if (Debug == true)
	323	fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Cache.GetCandidateVer(Pkg).VerStr());
	324	fprintf(output, "\n");
	325	}
	326
6d38011b DK	327	return true;
	328	}
	329	/}}}/
c3b85126	330	bool EDSP::WriteError(std::string const &message, FILE* output) { return false; }