[apt.git] / apt-pkg / deb / deblistparser.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: deblistparser.cc,v 1.14 1999/01/27 02:48:53 jgg Exp $
/* ######################################################################
   
   Package Cache Generator - Generator for the cache structure.
   
   This builds the cache structure from the abstract package list parser. 
   
   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include <apt-pkg/deblistparser.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/strutl.h>

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

// ListParser::debListParser - Constructor				/*{{{*/
// ---------------------------------------------------------------------
/* */
debListParser::debListParser(FileFd &File) : Tags(File)
{
}
									/*}}}*/
// ListParser::UniqFindTagWrite - Find the tag and write a unq string	/*{{{*/
// ---------------------------------------------------------------------
/* */
unsigned long debListParser::UniqFindTagWrite(const char *Tag)
{
   const char *Start;
   const char *Stop;
   if (Section.Find(Tag,Start,Stop) == false)
      return 0;
   return WriteUniqString(Start,Stop - Start);
}
									/*}}}*/
// ListParser::Package - Return the package name			/*{{{*/
// ---------------------------------------------------------------------
/* This is to return the name of the package this section describes */
string debListParser::Package()
{
   string Result = Section.FindS("Package");
   if (Result.empty() == true)
      _error->Error("Encoutered a section with no Package: header");
   return Result;
}
									/*}}}*/
// ListParser::Version - Return the version string			/*{{{*/
// ---------------------------------------------------------------------
/* This is to return the string describing the version in debian form,
   epoch:upstream-release. If this returns the blank string then the 
   entry is assumed to only describe package properties */
string debListParser::Version()
{
   return Section.FindS("Version");
}
									/*}}}*/
// ListParser::NewVersion - Fill in the version structure		/*{{{*/
// ---------------------------------------------------------------------
/* */
bool debListParser::NewVersion(pkgCache::VerIterator Ver)
{
   // Parse the section
   Ver->Section = UniqFindTagWrite("Section");
   
   // Archive Size
   Ver->Size = (unsigned)Section.FindI("Size");
   
   // Unpacked Size (in K)
   Ver->InstalledSize = (unsigned)Section.FindI("Installed-Size");
   Ver->InstalledSize *= 1024;

   // Priority
   const char *Start;
   const char *Stop;
   if (Section.Find("Priority",Start,Stop) == true)
   {
      WordList PrioList[] = {{"important",pkgCache::State::Important},
	                     {"required",pkgCache::State::Required},
	                     {"standard",pkgCache::State::Standard},
	                     {"optional",pkgCache::State::Optional},
	                     {"extra",pkgCache::State::Extra}};
      if (GrabWord(string(Start,Stop-Start),PrioList,
		   _count(PrioList),Ver->Priority) == false)
	 return _error->Error("Malformed Priority line");
   }

   if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)
      return false;
   if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false)
      return false;
   if (ParseDepends(Ver,"Suggests",pkgCache::Dep::Suggests) == false)
      return false;
   if (ParseDepends(Ver,"Recommends",pkgCache::Dep::Recommends) == false)
      return false;
   if (ParseDepends(Ver,"Conflicts",pkgCache::Dep::Conflicts) == false)
      return false;
   if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false)
      return false;

   if (ParseProvides(Ver) == false)
      return false;
   
   return true;
}
									/*}}}*/
// ListParser::UsePackage - Update a package structure			/*{{{*/
// ---------------------------------------------------------------------
/* This is called to update the package with any new information 
   that might be found in the section */
bool debListParser::UsePackage(pkgCache::PkgIterator Pkg,
			       pkgCache::VerIterator Ver)
{
   if (Pkg->Section == 0)
      Pkg->Section = UniqFindTagWrite("Section");
   if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
      return false;
   if (Section.FindFlag("Immediate-Configure",Pkg->Flags,pkgCache::Flag::ImmediateConf) == false)
      return false;
   if (ParseStatus(Pkg,Ver) == false)
      return false;
   return true;
}
									/*}}}*/
// ListParser::ParseStatus - Parse the status field			/*{{{*/
// ---------------------------------------------------------------------
/* Status lines are of the form,
     Status: want flag status
   want = unknown, install, hold, deinstall, purge
   flag = ok, reinstreq, hold, hold-reinstreq
   status = not-installed, unpacked, half-configured, uninstalled,
            half-installed, config-files, post-inst-failed, 
            removal-failed, installed
   
   Some of the above are obsolete (I think?) flag = hold-* and 
   status = post-inst-failed, removal-failed at least.
 */
bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
				pkgCache::VerIterator Ver)
{
   const char *Start;
   const char *Stop;
   if (Section.Find("Status",Start,Stop) == false)
      return true;
   
   // Isolate the first word
   const char *I = Start;
   for(; I < Stop && *I != ' '; I++);
   if (I >= Stop || *I != ' ')
      return _error->Error("Malformed Status line");

   // Process the want field
   WordList WantList[] = {{"unknown",pkgCache::State::Unknown},
                          {"install",pkgCache::State::Install},
                          {"hold",pkgCache::State::Hold},
                          {"deinstall",pkgCache::State::DeInstall},
                          {"purge",pkgCache::State::Purge}};
   if (GrabWord(string(Start,I-Start),WantList,
		_count(WantList),Pkg->SelectedState) == false)
      return _error->Error("Malformed 1st word in the Status line");

   // Isloate the next word
   I++;
   Start = I;
   for(; I < Stop && *I != ' '; I++);
   if (I >= Stop || *I != ' ')
      return _error->Error("Malformed status line, no 2nd word");

   // Process the flag field
   WordList FlagList[] = {{"ok",pkgCache::State::Ok},
                          {"reinstreq",pkgCache::State::ReInstReq},
                          {"hold",pkgCache::State::HoldInst},
                          {"hold-reinstreq",pkgCache::State::HoldReInstReq}};
   if (GrabWord(string(Start,I-Start),FlagList,
		_count(FlagList),Pkg->InstState) == false)
      return _error->Error("Malformed 2nd word in the Status line");

   // Isloate the last word
   I++;
   Start = I;
   for(; I < Stop && *I != ' '; I++);
   if (I != Stop)
      return _error->Error("Malformed Status line, no 3rd word");

   // Process the flag field
   WordList StatusList[] = {{"not-installed",pkgCache::State::NotInstalled},
                            {"unpacked",pkgCache::State::UnPacked},
                            {"half-configured",pkgCache::State::HalfConfigured},
                            {"installed",pkgCache::State::Installed},
                            {"uninstalled",pkgCache::State::UnInstalled},
                            {"half-installed",pkgCache::State::HalfInstalled},
                            {"config-files",pkgCache::State::ConfigFiles},
                            {"post-inst-failed",pkgCache::State::HalfConfigured},
                            {"removal-failed",pkgCache::State::HalfInstalled}};
   if (GrabWord(string(Start,I-Start),StatusList,
		_count(StatusList),Pkg->CurrentState) == false)
      return _error->Error("Malformed 3rd word in the Status line");

   /* A Status line marks the package as indicating the current
      version as well. Only if it is actually installed.. Otherwise
      the interesting dpkg handling of the status file creates bogus 
      entries. */
   if (!(Pkg->CurrentState == pkgCache::State::NotInstalled ||
	 Pkg->CurrentState == pkgCache::State::ConfigFiles))
   {
      if (Ver.end() == true)
	 _error->Warning("Encountered status field in a non-version description");
      else
	 Pkg->CurrentVer = Ver.Index();
   }
   
   return true;
}
									/*}}}*/
// ListParser::ParseDepends - Parse a dependency element		/*{{{*/
// ---------------------------------------------------------------------
/* This parses the dependency elements out of a standard string in place,
   bit by bit. */
const char *debListParser::ParseDepends(const char *Start,const char *Stop,
					string &Package,string &Ver,
					unsigned int &Op)
{
   // Strip off leading space
   for (;Start != Stop && isspace(*Start) != 0; Start++);
   
   // Parse off the package name
   const char *I = Start;
   for (;I != Stop && isspace(*I) == 0 && *I != '(' && *I != ')' &&
	*I != ',' && *I != '|'; I++);
   
   // Malformed, no '('
   if (I != Stop && *I == ')')
      return 0;

   if (I == Start)
      return 0;
   
   // Stash the package name
   Package.assign(Start,I - Start);
   
   // Skip white space to the '('
   for (;I != Stop && isspace(*I) != 0 ; I++);
   
   // Parse a version
   if (I != Stop && *I == '(')
   {
      // Skip the '('
      for (I++; I != Stop && isspace(*I) != 0 ; I++);
      if (I + 3 >= Stop)
	 return 0;
      
      // Determine the operator
      switch (*I)
      {
	 case '<':
	 I++;
	 if (*I == '=')
	 {
	    I++;
	    Op = pkgCache::Dep::LessEq;
	    break;
	 }
	 
	 if (*I == '<')
	 {
	    I++;
	    Op = pkgCache::Dep::Less;
	    break;
	 }
	 
	 // < is the same as <= and << is really Cs < for some reason
	 Op = pkgCache::Dep::LessEq;
	 break;
	 
	 case '>':
	 I++;
	 if (*I == '=')
	 {
	    I++;
	    Op = pkgCache::Dep::GreaterEq;
	    break;
	 }
	 
	 if (*I == '>')
	 {
	    I++;
	    Op = pkgCache::Dep::Greater;
	    break;
	 }
	 
	 // > is the same as >= and >> is really Cs > for some reason
	 Op = pkgCache::Dep::GreaterEq;
	 break;
	 
	 case '=':
	 Op = pkgCache::Dep::Equals;
	 I++;
	 break;
	 
	 // HACK around bad package definitions
	 default:
	 Op = pkgCache::Dep::Equals;
	 break;
      }
      
      // Skip whitespace
      for (;I != Stop && isspace(*I) != 0; I++);
      Start = I;
      for (;I != Stop && *I != ')'; I++);
      if (I == Stop || Start == I)
	 return 0;     
      
      Ver = string(Start,I-Start);
      I++;
   }
   else
   {
      Ver = string();
      Op = pkgCache::Dep::NoOp;
   }
   
   // Skip whitespace
   for (;I != Stop && isspace(*I) != 0; I++);
   if (I != Stop && *I == '|')
      Op |= pkgCache::Dep::Or;
   
   if (I == Stop || *I == ',' || *I == '|')
   {
      if (I != Stop)
	 for (I++; I != Stop && isspace(*I) != 0; I++);
      return I;
   }
   
   return 0;
}
									/*}}}*/
// ListParser::ParseDepends - Parse a dependency list			/*{{{*/
// ---------------------------------------------------------------------
/* This is the higher level depends parser. It takes a tag and generates
   a complete depends tree for the given version. */
bool debListParser::ParseDepends(pkgCache::VerIterator Ver,
				 const char *Tag,unsigned int Type)
{
   const char *Start;
   const char *Stop;
   if (Section.Find(Tag,Start,Stop) == false)
      return true;
   
   string Package;
   string Version;
   unsigned int Op;

   while (1)
   {
      Start = ParseDepends(Start,Stop,Package,Version,Op);
      if (Start == 0)
	 return _error->Error("Problem parsing dependency %s",Tag);
      
      if (NewDepends(Ver,Package,Version,Op,Type) == false)
	 return false;
      if (Start == Stop)
	 break;
   }
   return true;
}
									/*}}}*/
// ListParser::ParseProvides - Parse the provides list			/*{{{*/
// ---------------------------------------------------------------------
/* */
bool debListParser::ParseProvides(pkgCache::VerIterator Ver)
{
   const char *Start;
   const char *Stop;
   if (Section.Find("Provides",Start,Stop) == false)
      return true;
   
   string Package;
   string Version;
   unsigned int Op;

   while (1)
   {
      Start = ParseDepends(Start,Stop,Package,Version,Op);
      if (Start == 0)
	 return _error->Error("Problem parsing Provides line");
      if (Op != pkgCache::Dep::NoOp)
	 return _error->Error("Malformed provides line");

      if (NewProvides(Ver,Package,Version) == false)
	 return false;

      if (Start == Stop)
	 break;
   }
   
   return true;
}
									/*}}}*/
// ListParser::GrabWord - Matches a word and returns			/*{{{*/
// ---------------------------------------------------------------------
/* Looks for a word in a list of words - for ParseStatus */
bool debListParser::GrabWord(string Word,WordList *List,int Count,
			     unsigned char &Out)
{
   for (int C = 0; C != Count; C++)
   {
      if (strcasecmp(Word.c_str(),List[C].Str) == 0)
      {
	 Out = List[C].Val;
	 return true;
      }
   }
   return false;
}
									/*}}}*/
// ListParser::Step - Move to the next section in the file		/*{{{*/
// ---------------------------------------------------------------------
/* This has to be carefull to only process the correct architecture */
bool debListParser::Step()
{
   iOffset = Tags.Offset();
   string Arch = _config->Find("APT::architecture");
   while (Tags.Step(Section) == true)
   {
      /* See if this is the correct Architecture, if it isnt then we
         drop the whole section */
      const char *Start;
      const char *Stop;
      if (Section.Find("Architecture",Start,Stop) == false)
	 return true;

      if (stringcmp(Start,Stop,Arch.begin(),Arch.end()) == 0)
	 return true;

      if (stringcmp(Start,Stop,"all") == 0)
	 return true;

      iOffset = Tags.Offset();
   }   
   return false;
}
									/*}}}*/
// ListParser::LoadReleaseInfo - Load the release information		/*{{{*/
// ---------------------------------------------------------------------
/* */
bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI,
				    FileFd &File)
{
   pkgTagFile Tags(File);
   pkgTagSection Section;
   if (Tags.Step(Section) == false)
      return false;

   const char *Start;
   const char *Stop;
   if (Section.Find("Archive",Start,Stop) == true)
      FileI->Archive = WriteUniqString(Start,Stop - Start);
   if (Section.Find("Component",Start,Stop) == true)
      FileI->Component = WriteUniqString(Start,Stop - Start);
   if (Section.Find("Version",Start,Stop) == true)
      FileI->Version = WriteUniqString(Start,Stop - Start);
   if (Section.Find("Origin",Start,Stop) == true)
      FileI->Origin = WriteUniqString(Start,Stop - Start);
   if (Section.Find("Label",Start,Stop) == true)
      FileI->Label = WriteUniqString(Start,Stop - Start);
   if (Section.Find("Architecture",Start,Stop) == true)
      FileI->Architecture = WriteUniqString(Start,Stop - Start);
   
   if (Section.FindFlag("NotAutomatic",FileI->Flags,
			pkgCache::Flag::NotAutomatic) == false)
      _error->Warning("Bad NotAutomatic flag");
   
   return !_error->PendingError();
}
									/*}}}*/
Commit	Line	Data
f55a958f AL	1	// -- mode: cpp; mode: fold --
f55a958f AL	2	// Description /{{{/
cdcc6d34	3	// $Id: deblistparser.cc,v 1.14 1999/01/27 02:48:53 jgg Exp $
f55a958f AL	4	/* ######################################################################
	5
	6	Package Cache Generator - Generator for the cache structure.
	7
	8	This builds the cache structure from the abstract package list parser.
	9
	10	##################################################################### */
	11	/}}}/
	12	// Include Files /{{{/
094a497d AL	13	#include <apt-pkg/deblistparser.h>
	14	#include <apt-pkg/error.h>
	15	#include <apt-pkg/configuration.h>
cdcc6d34	16	#include <apt-pkg/strutl.h>
9c14e3d6	17
f55a958f AL	18	#include <system.h>
	19	/}}}/
	20
	21	// ListParser::debListParser - Constructor /{{{/
	22	// ---------------------------------------------------------------------
	23	/* */
8e06abb2	24	debListParser::debListParser(FileFd &File) : Tags(File)
f55a958f	25	{
0149949b AL	26	}
0149949b AL	27	/}}}/
f55a958f AL	28	// ListParser::UniqFindTagWrite - Find the tag and write a unq string /{{{/
	29	// ---------------------------------------------------------------------
	30	/* */
	31	unsigned long debListParser::UniqFindTagWrite(const char *Tag)
	32	{
	33	const char *Start;
	34	const char *Stop;
	35	if (Section.Find(Tag,Start,Stop) == false)
	36	return 0;
	37	return WriteUniqString(Start,Stop - Start);
	38	}
	39	/}}}/
f55a958f AL	40	// ListParser::Package - Return the package name /{{{/
	41	// ---------------------------------------------------------------------
	42	/* This is to return the name of the package this section describes */
	43	string debListParser::Package()
	44	{
b0b4efb9	45	string Result = Section.FindS("Package");
f55a958f AL	46	if (Result.empty() == true)
	47	_error->Error("Encoutered a section with no Package: header");
	48	return Result;
	49	}
	50	/}}}/
	51	// ListParser::Version - Return the version string /{{{/
	52	// ---------------------------------------------------------------------
	53	/* This is to return the string describing the version in debian form,
	54	epoch:upstream-release. If this returns the blank string then the
	55	entry is assumed to only describe package properties */
	56	string debListParser::Version()
	57	{
b0b4efb9	58	return Section.FindS("Version");
f55a958f AL	59	}
f55a958f AL	60	/}}}/
f55a958f AL	61	// ListParser::NewVersion - Fill in the version structure /{{{/
	62	// ---------------------------------------------------------------------
	63	/* */
	64	bool debListParser::NewVersion(pkgCache::VerIterator Ver)
0149949b AL	65	{
0149949b AL	66	// Parse the section
b35d2f5f	67	Ver->Section = UniqFindTagWrite("Section");
0149949b AL	68
0149949b AL	69	// Archive Size
b0b4efb9	70	Ver->Size = (unsigned)Section.FindI("Size");
0149949b AL	71
0149949b AL	72	// Unpacked Size (in K)
b0b4efb9	73	Ver->InstalledSize = (unsigned)Section.FindI("Installed-Size");
0149949b AL	74	Ver->InstalledSize *= 1024;
	75
	76	// Priority
	77	const char *Start;
	78	const char *Stop;
	79	if (Section.Find("Priority",Start,Stop) == true)
	80	{
6c139d6e AL	81	WordList PrioList[] = {{"important",pkgCache::State::Important},
	82	{"required",pkgCache::State::Required},
	83	{"standard",pkgCache::State::Standard},
	84	{"optional",pkgCache::State::Optional},
	85	{"extra",pkgCache::State::Extra}};
0149949b AL	86	if (GrabWord(string(Start,Stop-Start),PrioList,
	87	_count(PrioList),Ver->Priority) == false)
	88	return _error->Error("Malformed Priority line");
	89	}
dcb79bae	90
6c139d6e	91	if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)
dcb79bae	92	return false;
8efa2a3b	93	if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false)
dcb79bae	94	return false;
6c139d6e	95	if (ParseDepends(Ver,"Suggests",pkgCache::Dep::Suggests) == false)
dcb79bae	96	return false;
6c139d6e	97	if (ParseDepends(Ver,"Recommends",pkgCache::Dep::Recommends) == false)
dcb79bae	98	return false;
6c139d6e	99	if (ParseDepends(Ver,"Conflicts",pkgCache::Dep::Conflicts) == false)
dcb79bae	100	return false;
f55ece0e	101	if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false)
dcb79bae AL	102	return false;
	103
	104	if (ParseProvides(Ver) == false)
	105	return false;
0149949b	106
f55a958f AL	107	return true;
	108	}
	109	/}}}/
	110	// ListParser::UsePackage - Update a package structure /{{{/
	111	// ---------------------------------------------------------------------
	112	/* This is called to update the package with any new information
	113	that might be found in the section */
	114	bool debListParser::UsePackage(pkgCache::PkgIterator Pkg,
	115	pkgCache::VerIterator Ver)
	116	{
	117	if (Pkg->Section == 0)
b35d2f5f	118	Pkg->Section = UniqFindTagWrite("Section");
b0b4efb9	119	if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
f55a958f	120	return false;
b0b4efb9	121	if (Section.FindFlag("Immediate-Configure",Pkg->Flags,pkgCache::Flag::ImmediateConf) == false)
f55a958f AL	122	return false;
	123	if (ParseStatus(Pkg,Ver) == false)
	124	return false;
	125	return true;
	126	}
	127	/}}}/
dcb79bae	128	// ListParser::ParseStatus - Parse the status field /{{{/
f55a958f AL	129	// ---------------------------------------------------------------------
	130	/* Status lines are of the form,
	131	Status: want flag status
	132	want = unknown, install, hold, deinstall, purge
	133	flag = ok, reinstreq, hold, hold-reinstreq
	134	status = not-installed, unpacked, half-configured, uninstalled,
	135	half-installed, config-files, post-inst-failed,
	136	removal-failed, installed
	137
	138	Some of the above are obsolete (I think?) flag = hold-* and
	139	status = post-inst-failed, removal-failed at least.
	140	*/
	141	bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
	142	pkgCache::VerIterator Ver)
	143	{
	144	const char *Start;
	145	const char *Stop;
	146	if (Section.Find("Status",Start,Stop) == false)
	147	return true;
	148
	149	// Isolate the first word
	150	const char *I = Start;
	151	for(; I < Stop && *I != ' '; I++);
	152	if (I >= Stop \|\| *I != ' ')
	153	return _error->Error("Malformed Status line");
	154
	155	// Process the want field
6c139d6e AL	156	WordList WantList[] = {{"unknown",pkgCache::State::Unknown},
	157	{"install",pkgCache::State::Install},
	158	{"hold",pkgCache::State::Hold},
	159	{"deinstall",pkgCache::State::DeInstall},
	160	{"purge",pkgCache::State::Purge}};
f55a958f AL	161	if (GrabWord(string(Start,I-Start),WantList,
	162	_count(WantList),Pkg->SelectedState) == false)
	163	return _error->Error("Malformed 1st word in the Status line");
	164
	165	// Isloate the next word
	166	I++;
	167	Start = I;
	168	for(; I < Stop && *I != ' '; I++);
	169	if (I >= Stop \|\| *I != ' ')
	170	return _error->Error("Malformed status line, no 2nd word");
	171
	172	// Process the flag field
6c139d6e AL	173	WordList FlagList[] = {{"ok",pkgCache::State::Ok},
	174	{"reinstreq",pkgCache::State::ReInstReq},
	175	{"hold",pkgCache::State::HoldInst},
	176	{"hold-reinstreq",pkgCache::State::HoldReInstReq}};
f55a958f AL	177	if (GrabWord(string(Start,I-Start),FlagList,
	178	_count(FlagList),Pkg->InstState) == false)
	179	return _error->Error("Malformed 2nd word in the Status line");
	180
	181	// Isloate the last word
	182	I++;
	183	Start = I;
	184	for(; I < Stop && *I != ' '; I++);
	185	if (I != Stop)
	186	return _error->Error("Malformed Status line, no 3rd word");
	187
	188	// Process the flag field
6c139d6e AL	189	WordList StatusList[] = {{"not-installed",pkgCache::State::NotInstalled},
	190	{"unpacked",pkgCache::State::UnPacked},
	191	{"half-configured",pkgCache::State::HalfConfigured},
	192	{"installed",pkgCache::State::Installed},
	193	{"uninstalled",pkgCache::State::UnInstalled},
	194	{"half-installed",pkgCache::State::HalfInstalled},
	195	{"config-files",pkgCache::State::ConfigFiles},
	196	{"post-inst-failed",pkgCache::State::HalfConfigured},
	197	{"removal-failed",pkgCache::State::HalfInstalled}};
f55a958f AL	198	if (GrabWord(string(Start,I-Start),StatusList,
	199	_count(StatusList),Pkg->CurrentState) == false)
	200	return _error->Error("Malformed 3rd word in the Status line");
	201
	202	/* A Status line marks the package as indicating the current
	203	version as well. Only if it is actually installed.. Otherwise
	204	the interesting dpkg handling of the status file creates bogus
	205	entries. */
6c139d6e AL	206	if (!(Pkg->CurrentState == pkgCache::State::NotInstalled \|\|
6c139d6e AL	207	Pkg->CurrentState == pkgCache::State::ConfigFiles))
f55a958f AL	208	{
	209	if (Ver.end() == true)
	210	_error->Warning("Encountered status field in a non-version description");
	211	else
	212	Pkg->CurrentVer = Ver.Index();
	213	}
	214
dcb79bae AL	215	return true;
	216	}
	217	/}}}/
	218	// ListParser::ParseDepends - Parse a dependency element /{{{/
	219	// ---------------------------------------------------------------------
	220	/* This parses the dependency elements out of a standard string in place,
	221	bit by bit. */
	222	const char debListParser::ParseDepends(const char Start,const char *Stop,
	223	string &Package,string &Ver,
	224	unsigned int &Op)
	225	{
	226	// Strip off leading space
	227	for (;Start != Stop && isspace(*Start) != 0; Start++);
	228
	229	// Parse off the package name
	230	const char *I = Start;
	231	for (;I != Stop && isspace(I) == 0 && I != '(' && *I != ')' &&
	232	I != ',' && I != '\|'; I++);
	233
	234	// Malformed, no '('
	235	if (I != Stop && *I == ')')
	236	return 0;
	237
	238	if (I == Start)
	239	return 0;
	240
	241	// Stash the package name
	242	Package.assign(Start,I - Start);
	243
	244	// Skip white space to the '('
	245	for (;I != Stop && isspace(*I) != 0 ; I++);
	246
	247	// Parse a version
	248	if (I != Stop && *I == '(')
	249	{
	250	// Skip the '('
	251	for (I++; I != Stop && isspace(*I) != 0 ; I++);
	252	if (I + 3 >= Stop)
	253	return 0;
	254
	255	// Determine the operator
	256	switch (*I)
	257	{
	258	case '<':
	259	I++;
	260	if (*I == '=')
	261	{
	262	I++;
6c139d6e	263	Op = pkgCache::Dep::LessEq;
dcb79bae AL	264	break;
	265	}
	266
	267	if (*I == '<')
	268	{
	269	I++;
6c139d6e	270	Op = pkgCache::Dep::Less;
dcb79bae AL	271	break;
	272	}
	273
	274	// < is the same as <= and << is really Cs < for some reason
6c139d6e	275	Op = pkgCache::Dep::LessEq;
dcb79bae AL	276	break;
	277
	278	case '>':
	279	I++;
	280	if (*I == '=')
	281	{
	282	I++;
6c139d6e	283	Op = pkgCache::Dep::GreaterEq;
dcb79bae AL	284	break;
	285	}
	286
	287	if (*I == '>')
	288	{
	289	I++;
6c139d6e	290	Op = pkgCache::Dep::Greater;
dcb79bae AL	291	break;
	292	}
	293
	294	// > is the same as >= and >> is really Cs > for some reason
6c139d6e	295	Op = pkgCache::Dep::GreaterEq;
dcb79bae AL	296	break;
	297
	298	case '=':
6c139d6e	299	Op = pkgCache::Dep::Equals;
dcb79bae AL	300	I++;
	301	break;
	302
	303	// HACK around bad package definitions
	304	default:
6c139d6e	305	Op = pkgCache::Dep::Equals;
dcb79bae AL	306	break;
	307	}
	308
	309	// Skip whitespace
	310	for (;I != Stop && isspace(*I) != 0; I++);
	311	Start = I;
	312	for (;I != Stop && *I != ')'; I++);
	313	if (I == Stop \|\| Start == I)
	314	return 0;
	315
	316	Ver = string(Start,I-Start);
	317	I++;
	318	}
	319	else
	320	{
	321	Ver = string();
6c139d6e	322	Op = pkgCache::Dep::NoOp;
dcb79bae AL	323	}
	324
	325	// Skip whitespace
	326	for (;I != Stop && isspace(*I) != 0; I++);
	327	if (I != Stop && *I == '\|')
6c139d6e	328	Op \|= pkgCache::Dep::Or;
dcb79bae AL	329
	330	if (I == Stop \|\| I == ',' \|\| I == '\|')
	331	{
	332	if (I != Stop)
	333	for (I++; I != Stop && isspace(*I) != 0; I++);
	334	return I;
	335	}
	336
	337	return 0;
	338	}
	339	/}}}/
	340	// ListParser::ParseDepends - Parse a dependency list /{{{/
	341	// ---------------------------------------------------------------------
	342	/* This is the higher level depends parser. It takes a tag and generates
	343	a complete depends tree for the given version. */
	344	bool debListParser::ParseDepends(pkgCache::VerIterator Ver,
	345	const char *Tag,unsigned int Type)
	346	{
	347	const char *Start;
	348	const char *Stop;
	349	if (Section.Find(Tag,Start,Stop) == false)
	350	return true;
	351
	352	string Package;
	353	string Version;
	354	unsigned int Op;
	355
8efa2a3b	356	while (1)
dcb79bae	357	{
8efa2a3b	358	Start = ParseDepends(Start,Stop,Package,Version,Op);
dcb79bae AL	359	if (Start == 0)
dcb79bae AL	360	return _error->Error("Problem parsing dependency %s",Tag);
8efa2a3b	361
dcb79bae AL	362	if (NewDepends(Ver,Package,Version,Op,Type) == false)
dcb79bae AL	363	return false;
8efa2a3b AL	364	if (Start == Stop)
8efa2a3b AL	365	break;
dcb79bae AL	366	}
	367	return true;
	368	}
	369	/}}}/
	370	// ListParser::ParseProvides - Parse the provides list /{{{/
	371	// ---------------------------------------------------------------------
	372	/* */
	373	bool debListParser::ParseProvides(pkgCache::VerIterator Ver)
	374	{
	375	const char *Start;
	376	const char *Stop;
	377	if (Section.Find("Provides",Start,Stop) == false)
	378	return true;
	379
	380	string Package;
	381	string Version;
	382	unsigned int Op;
	383
	384	while (1)
	385	{
	386	Start = ParseDepends(Start,Stop,Package,Version,Op);
	387	if (Start == 0)
	388	return _error->Error("Problem parsing Provides line");
6c139d6e	389	if (Op != pkgCache::Dep::NoOp)
dcb79bae AL	390	return _error->Error("Malformed provides line");
	391
	392	if (NewProvides(Ver,Package,Version) == false)
	393	return false;
	394
	395	if (Start == Stop)
	396	break;
	397	}
	398
f55a958f AL	399	return true;
	400	}
	401	/}}}/
	402	// ListParser::GrabWord - Matches a word and returns /{{{/
	403	// ---------------------------------------------------------------------
	404	/* Looks for a word in a list of words - for ParseStatus */
	405	bool debListParser::GrabWord(string Word,WordList *List,int Count,
	406	unsigned char &Out)
	407	{
	408	for (int C = 0; C != Count; C++)
	409	{
	410	if (strcasecmp(Word.c_str(),List[C].Str) == 0)
	411	{
	412	Out = List[C].Val;
	413	return true;
	414	}
	415	}
	416	return false;
	417	}
	418	/}}}/
	419	// ListParser::Step - Move to the next section in the file /{{{/
	420	// ---------------------------------------------------------------------
0149949b	421	/* This has to be carefull to only process the correct architecture */
f55a958f AL	422	bool debListParser::Step()
f55a958f AL	423	{
dcb79bae	424	iOffset = Tags.Offset();
9c14e3d6	425	string Arch = _config->Find("APT::architecture");
0149949b AL	426	while (Tags.Step(Section) == true)
	427	{
	428	/* See if this is the correct Architecture, if it isnt then we
	429	drop the whole section */
	430	const char *Start;
	431	const char *Stop;
	432	if (Section.Find("Architecture",Start,Stop) == false)
	433	return true;
9c14e3d6 AL	434
9c14e3d6 AL	435	if (stringcmp(Start,Stop,Arch.begin(),Arch.end()) == 0)
0149949b AL	436	return true;
0149949b AL	437
9c14e3d6	438	if (stringcmp(Start,Stop,"all") == 0)
0149949b	439	return true;
dcb79bae AL	440
dcb79bae AL	441	iOffset = Tags.Offset();
0149949b AL	442	}
0149949b AL	443	return false;
f55a958f AL	444	}
f55a958f AL	445	/}}}/
b0b4efb9 AL	446	// ListParser::LoadReleaseInfo - Load the release information /{{{/
	447	// ---------------------------------------------------------------------
	448	/* */
	449	bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI,
	450	FileFd &File)
	451	{
	452	pkgTagFile Tags(File);
	453	pkgTagSection Section;
	454	if (Tags.Step(Section) == false)
	455	return false;
	456
	457	const char *Start;
	458	const char *Stop;
	459	if (Section.Find("Archive",Start,Stop) == true)
	460	FileI->Archive = WriteUniqString(Start,Stop - Start);
	461	if (Section.Find("Component",Start,Stop) == true)
	462	FileI->Component = WriteUniqString(Start,Stop - Start);
	463	if (Section.Find("Version",Start,Stop) == true)
	464	FileI->Version = WriteUniqString(Start,Stop - Start);
	465	if (Section.Find("Origin",Start,Stop) == true)
	466	FileI->Origin = WriteUniqString(Start,Stop - Start);
	467	if (Section.Find("Label",Start,Stop) == true)
	468	FileI->Label = WriteUniqString(Start,Stop - Start);
	469	if (Section.Find("Architecture",Start,Stop) == true)
	470	FileI->Architecture = WriteUniqString(Start,Stop - Start);
0dbb95d8	471
3c124dde AL	472	if (Section.FindFlag("NotAutomatic",FileI->Flags,
3c124dde AL	473	pkgCache::Flag::NotAutomatic) == false)
0dbb95d8	474	_error->Warning("Bad NotAutomatic flag");
0dbb95d8	475
b0b4efb9 AL	476	return !_error->PendingError();
	477	}
	478	/}}}/