* updated with mainline

[apt.git] / apt-pkg / contrib / configuration.cc

diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index a8d0db71b5648987e9743ba646e011aa267c7ba2..09e454be903edf217dbb3ceb1caebf69e922667d 100644 (file)
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: configuration.cc,v 1.20 2001/04/27 05:49:34 jgg Exp $
+// $Id: configuration.cc,v 1.28 2004/04/30 04:00:15 mdz Exp $
 /* ######################################################################
 
    Configuration Class
@@ -8,6 +8,9 @@
    This class provides a configuration file and command line parser
    for a tree-oriented configuration environment. All runtime configuration
    is stored in here.
+
+   This source is placed in the Public Domain, do with it what you will
+   It was originally written by Jason Gunthorpe <jgg@debian.org>.
    
    ##################################################################### */
                                                                        /*}}}*/
@@ -24,11 +27,14 @@
 #include <vector>
 #include <algorithm>
 #include <fstream>
+#include <iostream>
     
 #include <stdio.h>
 #include <dirent.h>
 #include <sys/stat.h>
 #include <unistd.h>
+
+using namespace std;
                                                                        /*}}}*/
 
 Configuration *_config = new Configuration;
@@ -92,7 +98,7 @@ Configuration::Item *Configuration::Lookup(Item *Head,const char *S,
    if (Len != 0)
    {
       for (; I != 0; Last = &I->Next, I = I->Next)
-        if ((Res = stringcasecmp(I->Tag.begin(),I->Tag.end(),S,S + Len)) == 0)
+        if ((Res = stringcasecmp(I->Tag,S,S + Len)) == 0)
            break;
    }
    else
@@ -276,7 +282,7 @@ string Configuration::FindAny(const char *Name,const char *Default) const
       case 'i': 
       {
         char buf[16];
-        snprintf(buf, sizeof(buf)-1, "%d", FindI(key, atoi(Default)));
+        snprintf(buf, sizeof(buf)-1, "%d", FindI(key, Default ? atoi(Default) : 0 ));
         return buf;
       }
    }
@@ -319,6 +325,47 @@ void Configuration::Set(const char *Name,int Value)
    char S[300];
    snprintf(S,sizeof(S),"%i",Value);
    Itm->Value = S;
+}
+                                                                       /*}}}*/
+// Configuration::Clear - Clear an single value from a list            /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void Configuration::Clear(string Name, int Value)
+{
+   char S[300];
+   snprintf(S,sizeof(S),"%i",Value);
+   Clear(Name, S);
+}
+                                                                       /*}}}*/
+// Configuration::Clear - Clear an single value from a list            /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void Configuration::Clear(string Name, string Value)
+{
+   Item *Top = Lookup(Name.c_str(),false);
+   if (Top == 0 || Top->Child == 0)
+      return;
+
+   Item *Tmp, *Prev, *I;
+   Prev = I = Top->Child;
+
+   while(I != NULL)
+   {
+      if(I->Value == Value)
+      {
+        Tmp = I;
+        // was first element, point parent to new first element
+        if(Top->Child == Tmp)
+           Top->Child = I->Next;
+        I = I->Next;
+        Prev->Next = I;
+        delete Tmp;
+      } else {
+        Prev = I;
+        I = I->Next;
+      }
+   }
+     
 }
                                                                        /*}}}*/
 // Configuration::Clear - Clear an entire tree                         /*{{{*/
@@ -327,9 +374,9 @@ void Configuration::Set(const char *Name,int Value)
 void Configuration::Clear(string Name)
 {
    Item *Top = Lookup(Name.c_str(),false);
-   if (Top == 0)
+   if (Top == 0) 
       return;
-   
+
    Top->Value = string();
    Item *Stop = Top;
    Top = Top->Child;
@@ -377,13 +424,17 @@ bool Configuration::ExistsAny(const char *Name) const
 {
    string key = Name;
 
-   if (key.size() > 2 && key.end()[-2] == '/' &&
-       key.find_first_of("fdbi",key.size()-1) < key.size())
-   {
-      key.resize(key.size() - 2);
-      if (Exists(key.c_str()))
-        return true;
-   }
+   if (key.size() > 2 && key.end()[-2] == '/')
+      if (key.find_first_of("fdbi",key.size()-1) < key.size())
+      {
+         key.resize(key.size() - 2);
+         if (Exists(key.c_str()))
+            return true;
+      }
+      else
+      {
+         _error->Warning(_("Unrecognized type abbreviation: '%c'"), key.end()[-3]);
+      }
 
    return Exists(Name);
 }
@@ -391,14 +442,14 @@ bool Configuration::ExistsAny(const char *Name) const
 // Configuration::Dump - Dump the config                               /*{{{*/
 // ---------------------------------------------------------------------
 /* Dump the entire configuration space */
-void Configuration::Dump()
+void Configuration::Dump(ostream& str)
 {
    /* Write out all of the configuration directives by walking the 
       configuration tree */
    const Configuration::Item *Top = Tree(0);
    for (; Top != 0;)
    {
-      clog << Top->FullTag() << " \"" << Top->Value << "\";" << endl;
+      str << Top->FullTag() << " \"" << Top->Value << "\";" << endl;
       
       if (Top->Child != 0)
       {
@@ -433,16 +484,16 @@ string Configuration::Item::FullTag(const Item *Stop) const
    Sectional config files are like bind's named.conf where there are 
    sections like 'zone "foo.org" { .. };' This causes each section to be
    added in with a tag like "zone::foo.org" instead of being split 
-   tag/value. */
+   tag/value. AsSectional enables Sectional parsing.*/
 bool ReadConfigFile(Configuration &Conf,string FName,bool AsSectional,
                    unsigned Depth)
 {   
    // Open the stream for reading
-   ifstream F(FName.c_str(),ios::in | ios::nocreate);
+   ifstream F(FName.c_str(),ios::in); 
    if (!F != 0)
       return _error->Errno("ifstream::ifstream",_("Opening configuration file %s"),FName.c_str());
    
-   char Buffer[300];
+   char Buffer[1024];
    string LineBuffer;
    string Stack[100];
    unsigned int StackPos = 0;
@@ -456,6 +507,10 @@ bool ReadConfigFile(Configuration &Conf,string FName,bool AsSectional,
    {
       F.getline(Buffer,sizeof(Buffer));
       CurLine++;
+      // This should be made to work instead, but this is better than looping
+      if (F.fail() && !F.eof())
+         return _error->Error(_("Line %d too long (max %d)"), CurLine, sizeof(Buffer));
+
       _strtabexpand(Buffer,sizeof(Buffer));
       _strstrip(Buffer);
 
@@ -569,7 +624,7 @@ bool ReadConfigFile(Configuration &Conf,string FName,bool AsSectional,
            string Tag;
            const char *Pos = LineBuffer.c_str();
            if (ParseQuoteWord(Pos,Tag) == false)
-              return _error->Error(_("Syntax error %s:%u: Malformed Tag"),FName.c_str(),CurLine);
+              return _error->Error(_("Syntax error %s:%u: Malformed tag"),FName.c_str(),CurLine);
 
            // Parse off the word
            string Word;