X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/2f4162708d9db7c71590370cc998d46e8386c757..0d29b9d4368284782862c7b507c47002b79ddb27:/apt-pkg/contrib/configuration.cc

diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index ff80dfaf8..00f6ad0f9 100644
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -21,10 +21,18 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/fileutl.h>
-
+#include <apt-pkg/macros.h>
+
+#include <ctype.h>
+#include <regex.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <algorithm>
+#include <string>
 #include <vector>
 #include <fstream>
-#include <iostream>
 
 #include <apti18n.h>
 
@@ -42,8 +50,7 @@ Configuration::Configuration() : ToFree(true)
 }
 Configuration::Configuration(const Item *Root) : Root((Item *)Root), ToFree(false)
 {
-};
-
+}
 									/*}}}*/
 // Configuration::~Configuration - Destructor				/*{{{*/
 // ---------------------------------------------------------------------
@@ -171,48 +178,60 @@ string Configuration::Find(const char *Name,const char *Default) const
 string Configuration::FindFile(const char *Name,const char *Default) const
 {
    const Item *RootItem = Lookup("RootDir");
-   std::string rootDir =  (RootItem == 0) ? "" : RootItem->Value;
-   if(rootDir.size() > 0 && rootDir[rootDir.size() - 1] != '/')
-     rootDir.push_back('/');
+   std::string result =  (RootItem == 0) ? "" : RootItem->Value;
+   if(result.empty() == false && result[result.size() - 1] != '/')
+     result.push_back('/');
 
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
    {
-      if (Default == 0)
-	 return rootDir;
-      else
-	 return rootDir + Default;
+      if (Default != 0)
+	 result.append(Default);
    }
-   
-   string val = Itm->Value;
-   while (Itm->Parent != 0)
+   else
    {
-      if (Itm->Parent->Value.empty() == true)
+      string val = Itm->Value;
+      while (Itm->Parent != 0)
       {
-	 Itm = Itm->Parent;
-	 continue;
-      }
+	 if (Itm->Parent->Value.empty() == true)
+	 {
+	    Itm = Itm->Parent;
+	    continue;
+	 }
 
-      // Absolute
-      if (val.length() >= 1 && val[0] == '/')
-         break;
+	 // Absolute
+	 if (val.length() >= 1 && val[0] == '/')
+	 {
+	    if (val.compare(0, 9, "/dev/null") == 0)
+	       val.erase(9);
+	    break;
+	 }
 
-      // ~/foo or ./foo 
-      if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
-	 break;
-	 
-      // ../foo 
-      if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
-	 break;
-      
-      if (Itm->Parent->Value.end()[-1] != '/')
-	 val.insert(0, "/");
+	 // ~/foo or ./foo
+	 if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
+	    break;
+
+	 // ../foo
+	 if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
+	    break;
 
-      val.insert(0, Itm->Parent->Value);
-      Itm = Itm->Parent;
+	 if (Itm->Parent->Value.end()[-1] != '/')
+	    val.insert(0, "/");
+
+	 val.insert(0, Itm->Parent->Value);
+	 Itm = Itm->Parent;
+      }
+      result.append(val);
    }
 
-   return rootDir + val;
+   // do some normalisation by removing // and /./ from the path
+   size_t found = string::npos;
+   while ((found = result.find("/./")) != string::npos)
+      result.replace(found, 3, "/");
+   while ((found = result.find("//")) != string::npos)
+      result.replace(found, 2, "/");
+
+   return result;
 }
 									/*}}}*/
 // Configuration::FindDir - Find a directory name			/*{{{*/
@@ -222,19 +241,30 @@ string Configuration::FindDir(const char *Name,const char *Default) const
 {
    string Res = FindFile(Name,Default);
    if (Res.end()[-1] != '/')
+   {
+      size_t const found = Res.rfind("/dev/null");
+      if (found != string::npos && found == Res.size() - 9)
+	 return Res; // /dev/null returning
       return Res + '/';
+   }
    return Res;
 }
 									/*}}}*/
 // Configuration::FindVector - Find a vector of values			/*{{{*/
 // ---------------------------------------------------------------------
 /* Returns a vector of config values under the given item */
-vector<string> Configuration::FindVector(const char *Name) const
+#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR < 13)
+vector<string> Configuration::FindVector(const char *Name) const { return FindVector(Name, ""); }
+#endif
+vector<string> Configuration::FindVector(const char *Name, std::string const &Default) const
 {
    vector<string> Vec;
    const Item *Top = Lookup(Name);
    if (Top == NULL)
-      return Vec;
+      return VectorizeString(Default, ',');
+
+   if (Top->Value.empty() == false)
+      return VectorizeString(Top->Value, ',');
 
    Item *I = Top->Child;
    while(I != NULL)
@@ -242,6 +272,9 @@ vector<string> Configuration::FindVector(const char *Name) const
       Vec.push_back(I->Value);
       I = I->Next;
    }
+   if (Vec.empty() == true)
+      return VectorizeString(Default, ',');
+
    return Vec;
 }
 									/*}}}*/
@@ -403,6 +436,18 @@ void Configuration::Clear(string const &Name, string const &Value)
       }
    }
      
+}
+									/*}}}*/
+// Configuration::Clear - Clear everything				/*{{{*/
+// ---------------------------------------------------------------------
+void Configuration::Clear()
+{
+   const Configuration::Item *Top = Tree(0);
+   while( Top != 0 )
+   {
+      Clear(Top->FullTag());
+      Top = Top->Next;
+   }
 }
 									/*}}}*/
 // Configuration::Clear - Clear an entire tree				/*{{{*/
@@ -794,7 +839,7 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool const &AsSectio
 	    // Go down a level
 	    if (TermChar == '{')
 	    {
-	       if (StackPos <= 100)
+	       if (StackPos < sizeof(Stack)/sizeof(std::string))
 		  Stack[StackPos++] = ParentTag;
 	       
 	       /* Make sectional tags incorperate the section into the
@@ -941,7 +986,7 @@ Configuration::MatchAgainstConfig::MatchAgainstConfig(char const * Config)
 	 continue;
       }
    }
-   if (strings.size() == 0)
+   if (strings.empty() == true)
       patterns.push_back(NULL);
 }
 									/*}}}*/