Sync with apt@packages.debian.org/apt--main--0--patch-75

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

diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index 82d4f3ee935cd8b580f93aac190bfe19fe955a72..6e78ed42b80b71950d7fe0bdd7c6683f5ccb89fc 100644 (file)
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: deblistparser.cc,v 1.16 1999/02/08 07:30:50 jgg Exp $
+// $Id: deblistparser.cc,v 1.29.2.5 2004/01/06 01:43:44 mdz Exp $

 /* ######################################################################
    
    Package Cache Generator - Generator for the cache structure.
 /* ######################################################################
    
    Package Cache Generator - Generator for the cache structure.


@@ -14,15 +14,27 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/strutl.h>

+#include <apt-pkg/crc-16.h>
+#include <apt-pkg/md5.h>
+
+#include <ctype.h>

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

+static debListParser::WordList PrioList[] = {{"important",pkgCache::State::Important},
+                       {"required",pkgCache::State::Required},
+                       {"standard",pkgCache::State::Standard},
+                       {"optional",pkgCache::State::Optional},
+                      {"extra",pkgCache::State::Extra},
+                       {}};
+

 // ListParser::debListParser - Constructor                             /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ListParser::debListParser - Constructor                             /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-debListParser::debListParser(FileFd &File) : Tags(File)
+debListParser::debListParser(FileFd *File) : Tags(File)

 {
 {

+   Arch = _config->Find("APT::architecture");

 }
                                                                        /*}}}*/
 // ListParser::UniqFindTagWrite - Find the tag and write a unq string  /*{{{*/
 }
                                                                        /*}}}*/
 // ListParser::UniqFindTagWrite - Find the tag and write a unq string  /*{{{*/


@@ -78,15 +90,9 @@ bool debListParser::NewVersion(pkgCache::VerIterator Ver)
    const char *Start;
    const char *Stop;
    if (Section.Find("Priority",Start,Stop) == true)
    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 (GrabWord(string(Start,Stop-Start),PrioList,Ver->Priority) == false)
+        Ver->Priority = pkgCache::State::Extra;

    }
 
    if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)
    }
 
    if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)


@@ -102,12 +108,56 @@ bool debListParser::NewVersion(pkgCache::VerIterator Ver)
    if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false)
       return false;
 
    if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false)
       return false;
 

+   // Obsolete.
+   if (ParseDepends(Ver,"Optional",pkgCache::Dep::Suggests) == false)
+      return false;
+   

    if (ParseProvides(Ver) == false)
       return false;
    
    return true;
 }
                                                                        /*}}}*/
    if (ParseProvides(Ver) == false)
       return false;
    
    return true;
 }
                                                                        /*}}}*/

+// ListParser::Description - Return the description string             /*{{{*/
+// ---------------------------------------------------------------------
+/* This is to return the string describing the package in debian
+   form. If this returns the blank string then the entry is assumed to
+   only describe package properties */
+string debListParser::Description()
+{
+   if (DescriptionLanguage().empty())
+      return Section.FindS("Description");
+   else
+      return Section.FindS(("Description-" + pkgIndexFile::LanguageCode()).c_str());
+}
+                                                                        /*}}}*/
+// ListParser::DescriptionLanguage - Return the description lang string        /*{{{*/
+// ---------------------------------------------------------------------
+/* This is to return the string describing the language of
+   description. If this returns the blank string then the entry is
+   assumed to describe original description. */
+string debListParser::DescriptionLanguage()
+{
+   return Section.FindS("Description").empty() ? pkgIndexFile::LanguageCode() : "";
+}
+                                                                        /*}}}*/
+// ListParser::Description - Return the description_md5 MD5SumValue    /*{{{*/
+// ---------------------------------------------------------------------
+/* This is to return the md5 string to allow the check if is the right
+   description. If thisreturns a blank string then calculate the md5
+   value. */
+MD5SumValue debListParser::Description_md5()
+{
+   string value = Section.FindS("Description-md5");
+
+   if (value.empty()) {
+      MD5Summation md5;
+      md5.Add((Description() + "\n").c_str());
+      return md5.Result();
+   } else
+      return MD5SumValue(value);
+}
+                                                                        /*}}}*/

 // ListParser::UsePackage - Update a package structure                 /*{{{*/
 // ---------------------------------------------------------------------
 /* This is called to update the package with any new information 
 // ListParser::UsePackage - Update a package structure                 /*{{{*/
 // ---------------------------------------------------------------------
 /* This is called to update the package with any new information 


@@ -119,20 +169,65 @@ bool debListParser::UsePackage(pkgCache::PkgIterator Pkg,
       Pkg->Section = UniqFindTagWrite("Section");
    if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
       return false;
       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)
+   if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false)

       return false;
       return false;

+
+   if (strcmp(Pkg.Name(),"apt") == 0)
+      Pkg->Flags |= pkgCache::Flag::Important;
+   

    if (ParseStatus(Pkg,Ver) == false)
       return false;
    return true;
 }
                                                                        /*}}}*/
    if (ParseStatus(Pkg,Ver) == false)
       return false;
    return true;
 }
                                                                        /*}}}*/

+// ListParser::VersionHash - Compute a unique hash for this version    /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+unsigned short debListParser::VersionHash()
+{
+   const char *Sections[] ={"Installed-Size",
+                            "Depends",
+                            "Pre-Depends",
+//                            "Suggests",
+//                            "Recommends",
+                            "Conflicts",
+                            "Replaces",0};
+   unsigned long Result = INIT_FCS;
+   char S[1024];
+   for (const char **I = Sections; *I != 0; I++)
+   {
+      const char *Start;
+      const char *End;
+      if (Section.Find(*I,Start,End) == false || End - Start >= (signed)sizeof(S))
+        continue;
+      
+      /* Strip out any spaces from the text, this undoes dpkgs reformatting
+         of certain fields. dpkg also has the rather interesting notion of
+         reformatting depends operators < -> <= */
+      char *I = S;
+      for (; Start != End; Start++)
+      {
+        if (isspace(*Start) == 0)
+           *I++ = tolower(*Start);
+        if (*Start == '<' && Start[1] != '<' && Start[1] != '=')
+           *I++ = '=';
+        if (*Start == '>' && Start[1] != '>' && Start[1] != '=')
+           *I++ = '=';
+      }
+
+      Result = AddCRC16(Result,S,I - S);
+   }
+   
+   return Result;
+}
+                                                                       /*}}}*/

 // 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
 // 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,
+   status = not-installed, unpacked, half-configured,

             half-installed, config-files, post-inst-failed, 
             removal-failed, installed
    
             half-installed, config-files, post-inst-failed, 
             removal-failed, installed
    


@@ -158,9 +253,9 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
                           {"install",pkgCache::State::Install},
                           {"hold",pkgCache::State::Hold},
                           {"deinstall",pkgCache::State::DeInstall},
                           {"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)
+                          {"purge",pkgCache::State::Purge},
+                          {}};
+   if (GrabWord(string(Start,I-Start),WantList,Pkg->SelectedState) == false)

       return _error->Error("Malformed 1st word in the Status line");
 
    // Isloate the next word
       return _error->Error("Malformed 1st word in the Status line");
 
    // Isloate the next word


@@ -174,9 +269,9 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
    WordList FlagList[] = {{"ok",pkgCache::State::Ok},
                           {"reinstreq",pkgCache::State::ReInstReq},
                           {"hold",pkgCache::State::HoldInst},
    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)
+                          {"hold-reinstreq",pkgCache::State::HoldReInstReq},
+                          {}};
+   if (GrabWord(string(Start,I-Start),FlagList,Pkg->InstState) == false)

       return _error->Error("Malformed 2nd word in the Status line");
 
    // Isloate the last word
       return _error->Error("Malformed 2nd word in the Status line");
 
    // Isloate the last word


@@ -191,13 +286,12 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
                             {"unpacked",pkgCache::State::UnPacked},
                             {"half-configured",pkgCache::State::HalfConfigured},
                             {"installed",pkgCache::State::Installed},
                             {"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},
                             {"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)
+                            {"removal-failed",pkgCache::State::HalfInstalled},
+                            {}};
+   if (GrabWord(string(Start,I-Start),StatusList,Pkg->CurrentState) == false)

       return _error->Error("Malformed 3rd word in the Status line");
 
    /* A Status line marks the package as indicating the current
       return _error->Error("Malformed 3rd word in the Status line");
 
    /* A Status line marks the package as indicating the current


@@ -215,6 +309,65 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
    
    return true;
 }
    
    return true;
 }

+
+const char *debListParser::ConvertRelation(const char *I,unsigned int &Op)
+{
+   // 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;
+   }
+   return I;
+}
+

                                                                        /*}}}*/
 // ListParser::ParseDepends - Parse a dependency element               /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // ListParser::ParseDepends - Parse a dependency element               /*{{{*/
 // ---------------------------------------------------------------------


@@ -222,7 +375,7 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
    bit by bit. */
 const char *debListParser::ParseDepends(const char *Start,const char *Stop,
                                        string &Package,string &Ver,
    bit by bit. */
 const char *debListParser::ParseDepends(const char *Start,const char *Stop,
                                        string &Package,string &Ver,

-                                       unsigned int &Op)
+                                       unsigned int &Op, bool ParseArchFlags)

 {
    // Strip off leading space
    for (;Start != Stop && isspace(*Start) != 0; Start++);
 {
    // Strip off leading space
    for (;Start != Stop && isspace(*Start) != 0; Start++);


@@ -252,60 +405,7 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
       for (I++; I != Stop && isspace(*I) != 0 ; I++);
       if (I + 3 >= Stop)
         return 0;
       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;
-      }
+      I = ConvertRelation(I,Op);

       
       // Skip whitespace
       for (;I != Stop && isspace(*I) != 0; I++);
       
       // Skip whitespace
       for (;I != Stop && isspace(*I) != 0; I++);


@@ -314,7 +414,11 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
       if (I == Stop || Start == I)
         return 0;     
       
       if (I == Stop || Start == I)
         return 0;     
       

-      Ver = string(Start,I-Start);
+      // Skip trailing whitespace
+      const char *End = I;
+      for (; End > Start && isspace(End[-1]); End--);
+      
+      Ver = string(Start,End-Start);

       I++;
    }
    else
       I++;
    }
    else


@@ -325,6 +429,60 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
    
    // Skip whitespace
    for (;I != Stop && isspace(*I) != 0; I++);
    
    // Skip whitespace
    for (;I != Stop && isspace(*I) != 0; I++);

+
+   if (ParseArchFlags == true)
+   {
+      string arch = _config->Find("APT::Architecture");
+
+      // Parse an architecture
+      if (I != Stop && *I == '[')
+      {
+        // malformed
+         I++;
+         if (I == Stop)
+           return 0; 
+        
+         const char *End = I;
+         bool Found = false;
+        bool NegArch = false;
+         while (I != Stop) 
+        {
+            // look for whitespace or ending ']'
+           while (End != Stop && !isspace(*End) && *End != ']') 
+              End++;
+        
+           if (End == Stop) 
+              return 0;
+
+           if (*I == '!')
+            {
+              NegArch = true;
+              I++;
+            }
+
+           if (stringcmp(arch,I,End) == 0)
+              Found = true;
+           
+           if (*End++ == ']') {
+              I = End;
+              break;
+           }
+           
+           I = End;
+           for (;I != Stop && isspace(*I) != 0; I++);
+         }
+
+        if (NegArch)
+           Found = !Found;
+        
+         if (Found == false)
+           Package = ""; /* not for this arch */
+      }
+      
+      // Skip whitespace
+      for (;I != Stop && isspace(*I) != 0; I++);
+   }
+

    if (I != Stop && *I == '|')
       Op |= pkgCache::Dep::Or;
    
    if (I != Stop && *I == '|')
       Op |= pkgCache::Dep::Or;
    


@@ -403,10 +561,9 @@ bool debListParser::ParseProvides(pkgCache::VerIterator Ver)
 // ListParser::GrabWord - Matches a word and returns                   /*{{{*/
 // ---------------------------------------------------------------------
 /* Looks for a word in a list of words - for ParseStatus */
 // 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)
+bool debListParser::GrabWord(string Word,WordList *List,unsigned char &Out)

 {
 {

-   for (int C = 0; C != Count; C++)
+   for (unsigned int C = 0; List[C].Str != 0; C++)

    {
       if (strcasecmp(Word.c_str(),List[C].Str) == 0)
       {
    {
       if (strcasecmp(Word.c_str(),List[C].Str) == 0)
       {


@@ -423,17 +580,17 @@ bool debListParser::GrabWord(string Word,WordList *List,int Count,
 bool debListParser::Step()
 {
    iOffset = Tags.Offset();
 bool debListParser::Step()
 {
    iOffset = Tags.Offset();

-   string Arch = _config->Find("APT::architecture");

    while (Tags.Step(Section) == true)
    while (Tags.Step(Section) == true)

-   {
-      /* See if this is the correct Architecture, if it isnt then we
-         drop the whole section */
+   {      
+      /* See if this is the correct Architecture, if it isn't then we
+         drop the whole section. A missing arch tag only happens (in theory)
+         inside the Status file, so that is a positive return */

       const char *Start;
       const char *Stop;
       if (Section.Find("Architecture",Start,Stop) == false)
         return true;
 
       const char *Start;
       const char *Stop;
       if (Section.Find("Architecture",Start,Stop) == false)
         return true;
 

-      if (stringcmp(Start,Stop,Arch.begin(),Arch.end()) == 0)
+      if (stringcmp(Arch,Start,Stop) == 0)

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


@@ -450,14 +607,14 @@ bool debListParser::Step()
 bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI,
                                    FileFd &File)
 {
 bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI,
                                    FileFd &File)
 {

-   pkgTagFile Tags(File);
+   pkgTagFile Tags(&File, File.Size() + 256); // XXX

    pkgTagSection Section;
    if (Tags.Step(Section) == false)
       return false;
 
    const char *Start;
    const char *Stop;
    pkgTagSection Section;
    if (Tags.Step(Section) == false)
       return false;
 
    const char *Start;
    const char *Stop;

-   if (Section.Find("Archive",Start,Stop) == true)
+   if (Section.Find("Suite",Start,Stop) == true)

       FileI->Archive = WriteUniqString(Start,Stop - Start);
    if (Section.Find("Component",Start,Stop) == true)
       FileI->Component = WriteUniqString(Start,Stop - Start);
       FileI->Archive = WriteUniqString(Start,Stop - Start);
    if (Section.Find("Component",Start,Stop) == true)
       FileI->Component = WriteUniqString(Start,Stop - Start);


@@ -477,3 +634,15 @@ bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI,
    return !_error->PendingError();
 }
                                                                        /*}}}*/
    return !_error->PendingError();
 }
                                                                        /*}}}*/

+// ListParser::GetPrio - Convert the priority from a string            /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+unsigned char debListParser::GetPrio(string Str)
+{
+   unsigned char Out;
+   if (GrabWord(Str,PrioList,Out) == false)
+      Out = pkgCache::State::Extra;
+   
+   return Out;
+}
+                                                                       /*}}}*/