// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: configuration.cc,v 1.14 2000/01/16 05:36:17 jgg Exp $
+// $Id: configuration.cc,v 1.28 2004/04/30 04:00:15 mdz Exp $
/* ######################################################################
Configuration Class
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>.
##################################################################### */
/*}}}*/
// Include files /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/configuration.h"
-#endif
+#include <config.h>
+
#include <apt-pkg/configuration.h>
#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 <fstream.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <algorithm>
+#include <string>
+#include <stack>
+#include <vector>
+#include <fstream>
+
+#include <apti18n.h>
+
+using namespace std;
/*}}}*/
Configuration *_config = new Configuration;
// Configuration::Configuration - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
-Configuration::Configuration()
+Configuration::Configuration() : ToFree(true)
{
Root = new Item;
+}
+Configuration::Configuration(const Item *Root) : Root((Item *)Root), ToFree(false)
+{
+}
+ /*}}}*/
+// Configuration::~Configuration - Destructor /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+Configuration::~Configuration()
+{
+ if (ToFree == false)
+ return;
+
+ Item *Top = Root;
+ for (; Top != 0;)
+ {
+ if (Top->Child != 0)
+ {
+ Top = Top->Child;
+ continue;
+ }
+
+ while (Top != 0 && Top->Next == 0)
+ {
+ Item *Parent = Top->Parent;
+ delete Top;
+ Top = Parent;
+ }
+ if (Top != 0)
+ {
+ Item *Next = Top->Next;
+ delete Top;
+ Top = Next;
+ }
+ }
}
/*}}}*/
// Configuration::Lookup - Lookup a single item /*{{{*/
/* This will lookup a single item by name below another item. It is a
helper function for the main lookup function */
Configuration::Item *Configuration::Lookup(Item *Head,const char *S,
- unsigned long Len,bool Create)
+ unsigned long const &Len,bool const &Create)
{
int Res = 1;
Item *I = Head->Child;
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
return 0;
I = new Item;
- I->Tag = string(S,Len);
+ I->Tag.assign(S,Len);
I->Next = *Last;
I->Parent = Head;
*Last = I;
// ---------------------------------------------------------------------
/* This performs a fully scoped lookup of a given name, possibly creating
new items */
-Configuration::Item *Configuration::Lookup(const char *Name,bool Create)
+Configuration::Item *Configuration::Lookup(const char *Name,bool const &Create)
{
if (Name == 0)
return Root->Child;
// Configuration::Find - Find a value /*{{{*/
// ---------------------------------------------------------------------
/* */
-string Configuration::Find(const char *Name,const char *Default)
+string Configuration::Find(const char *Name,const char *Default) const
{
- Item *Itm = Lookup(Name,false);
+ const Item *Itm = Lookup(Name);
if (Itm == 0 || Itm->Value.empty() == true)
{
if (Default == 0)
- return string();
+ return "";
else
return Default;
}
/* Directories are stored as the base dir in the Parent node and the
sub directory in sub nodes with the final node being the end filename
*/
-string Configuration::FindFile(const char *Name,const char *Default)
+string Configuration::FindFile(const char *Name,const char *Default) const
{
- Item *Itm = Lookup(Name,false);
+ const Item *RootItem = Lookup("RootDir");
+ 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 string();
- else
- return Default;
+ if (Default != 0)
+ result.append(Default);
}
-
- // Absolute path
- if (Itm->Value[0] == '/' || Itm->Parent == 0)
- return Itm->Value;
-
- // ./ is also considered absolute as is anything with ~ in it
- if (Itm->Value[0] != 0 &&
- ((Itm->Value[0] == '.' && Itm->Value[1] == '/') ||
- (Itm->Value[0] == '~' && Itm->Value[1] == '/')))
- return Itm->Value;
-
- if (Itm->Parent->Value.end()[-1] == '/')
- return Itm->Parent->Value + Itm->Value;
else
- return Itm->Parent->Value + '/' + Itm->Value;
+ {
+ string val = Itm->Value;
+ while (Itm->Parent != 0)
+ {
+ if (Itm->Parent->Value.empty() == true)
+ {
+ Itm = Itm->Parent;
+ continue;
+ }
+
+ // 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, "/");
+
+ val.insert(0, Itm->Parent->Value);
+ Itm = Itm->Parent;
+ }
+ result.append(val);
+ }
+ return flNormalize(result);
}
/*}}}*/
// Configuration::FindDir - Find a directory name /*{{{*/
// ---------------------------------------------------------------------
/* This is like findfile execept the result is terminated in a / */
-string Configuration::FindDir(const char *Name,const char *Default)
+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, std::string const &Default, bool const Keys) const
+{
+ vector<string> Vec;
+ const Item *Top = Lookup(Name);
+ if (Top == NULL)
+ return VectorizeString(Default, ',');
+
+ if (Top->Value.empty() == false)
+ return VectorizeString(Top->Value, ',');
+
+ Item *I = Top->Child;
+ while(I != NULL)
+ {
+ Vec.push_back(Keys ? I->Tag : I->Value);
+ I = I->Next;
+ }
+ if (Vec.empty() == true)
+ return VectorizeString(Default, ',');
+
+ return Vec;
+}
+ /*}}}*/
// Configuration::FindI - Find an integer value /*{{{*/
// ---------------------------------------------------------------------
/* */
-int Configuration::FindI(const char *Name,int Default)
+int Configuration::FindI(const char *Name,int const &Default) const
{
- Item *Itm = Lookup(Name,false);
+ const Item *Itm = Lookup(Name);
if (Itm == 0 || Itm->Value.empty() == true)
return Default;
// Configuration::FindB - Find a boolean type /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool Configuration::FindB(const char *Name,bool Default)
+bool Configuration::FindB(const char *Name,bool const &Default) const
{
- Item *Itm = Lookup(Name,false);
+ const Item *Itm = Lookup(Name);
if (Itm == 0 || Itm->Value.empty() == true)
return Default;
return StringToBool(Itm->Value,Default);
}
/*}}}*/
+// Configuration::FindAny - Find an arbitrary type /*{{{*/
+// ---------------------------------------------------------------------
+/* a key suffix of /f, /d, /b or /i calls Find{File,Dir,B,I} */
+string Configuration::FindAny(const char *Name,const char *Default) const
+{
+ string key = Name;
+ char type = 0;
+
+ if (key.size() > 2 && key.end()[-2] == '/')
+ {
+ type = key.end()[-1];
+ key.resize(key.size() - 2);
+ }
+
+ switch (type)
+ {
+ // file
+ case 'f':
+ return FindFile(key.c_str(), Default);
+
+ // directory
+ case 'd':
+ return FindDir(key.c_str(), Default);
+
+ // bool
+ case 'b':
+ return FindB(key, Default) ? "true" : "false";
+
+ // int
+ case 'i':
+ {
+ char buf[16];
+ snprintf(buf, sizeof(buf)-1, "%d", FindI(key, Default ? atoi(Default) : 0 ));
+ return buf;
+ }
+ }
+
+ // fallback
+ return Find(Name, Default);
+}
+ /*}}}*/
+// Configuration::CndSet - Conditinal Set a value /*{{{*/
+// ---------------------------------------------------------------------
+/* This will not overwrite */
+void Configuration::CndSet(const char *Name,const string &Value)
+{
+ Item *Itm = Lookup(Name,true);
+ if (Itm == 0)
+ return;
+ if (Itm->Value.empty() == true)
+ Itm->Value = Value;
+}
+ /*}}}*/
+// Configuration::Set - Set an integer value /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void Configuration::CndSet(const char *Name,int const Value)
+{
+ Item *Itm = Lookup(Name,true);
+ if (Itm == 0 || Itm->Value.empty() == false)
+ return;
+ char S[300];
+ snprintf(S,sizeof(S),"%i",Value);
+ Itm->Value = S;
+}
+ /*}}}*/
// Configuration::Set - Set a value /*{{{*/
// ---------------------------------------------------------------------
/* */
-void Configuration::Set(const char *Name,string Value)
+void Configuration::Set(const char *Name,const string &Value)
{
Item *Itm = Lookup(Name,true);
if (Itm == 0)
// Configuration::Set - Set an integer value /*{{{*/
// ---------------------------------------------------------------------
/* */
-void Configuration::Set(const char *Name,int Value)
+void Configuration::Set(const char *Name,int const &Value)
{
Item *Itm = Lookup(Name,true);
if (Itm == 0)
Itm->Value = S;
}
/*}}}*/
+// Configuration::Clear - Clear an single value from a list /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void Configuration::Clear(string const &Name, int const &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 const &Name, string const &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 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 /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void Configuration::Clear(string const &Name)
+{
+ Item *Top = Lookup(Name.c_str(),false);
+ if (Top == 0)
+ return;
+
+ Top->Value.clear();
+ Item *Stop = Top;
+ Top = Top->Child;
+ Stop->Child = 0;
+ for (; Top != 0;)
+ {
+ if (Top->Child != 0)
+ {
+ Top = Top->Child;
+ continue;
+ }
+
+ while (Top != 0 && Top->Next == 0)
+ {
+ Item *Tmp = Top;
+ Top = Top->Parent;
+ delete Tmp;
+
+ if (Top == Stop)
+ return;
+ }
+
+ Item *Tmp = Top;
+ if (Top != 0)
+ Top = Top->Next;
+ delete Tmp;
+ }
+}
+ /*}}}*/
+void Configuration::MoveSubTree(char const * const OldRootName, char const * const NewRootName)/*{{{*/
+{
+ // prevent NewRoot being a subtree of OldRoot
+ if (OldRootName == nullptr)
+ return;
+ if (NewRootName != nullptr)
+ {
+ if (strcmp(OldRootName, NewRootName) == 0)
+ return;
+ std::string const oldroot = std::string(OldRootName) + "::";
+ if (strcasestr(NewRootName, oldroot.c_str()) != NULL)
+ return;
+ }
+
+ Item * Top;
+ Item const * const OldRoot = Top = Lookup(OldRootName, false);
+ if (Top == nullptr)
+ return;
+ std::string NewRoot;
+ if (NewRootName != nullptr)
+ NewRoot.append(NewRootName).append("::");
+
+ Top->Value.clear();
+ Item * const Stop = Top;
+ Top = Top->Child;
+ Stop->Child = 0;
+ for (; Top != 0;)
+ {
+ if (Top->Child != 0)
+ {
+ Top = Top->Child;
+ continue;
+ }
+
+ while (Top != 0 && Top->Next == 0)
+ {
+ Set(NewRoot + Top->FullTag(OldRoot), Top->Value);
+ Item const * const Tmp = Top;
+ Top = Top->Parent;
+ delete Tmp;
+
+ if (Top == Stop)
+ return;
+ }
+
+ Set(NewRoot + Top->FullTag(OldRoot), Top->Value);
+ Item const * const Tmp = Top;
+ if (Top != 0)
+ Top = Top->Next;
+ delete Tmp;
+ }
+}
+ /*}}}*/
// Configuration::Exists - Returns true if the Name exists /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool Configuration::Exists(const char *Name)
+bool Configuration::Exists(const char *Name) const
{
- Item *Itm = Lookup(Name,false);
+ const Item *Itm = Lookup(Name);
if (Itm == 0)
return false;
return true;
}
/*}}}*/
+// Configuration::ExistsAny - Returns true if the Name, possibly /*{{{*/
+// ---------------------------------------------------------------------
+/* qualified by /[fdbi] exists */
+bool Configuration::ExistsAny(const char *Name) const
+{
+ string key = Name;
+
+ 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);
+}
+ /*}}}*/
// 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
+ Dump(str, NULL, "%f \"%v\";\n", true);
+}
+void Configuration::Dump(ostream& str, char const * const root,
+ char const * const formatstr, bool const emptyValue)
+{
+ const Configuration::Item* Top = Tree(root);
+ if (Top == 0)
+ return;
+ const Configuration::Item* const Root = (root == NULL) ? NULL : Top;
+ std::vector<std::string> const format = VectorizeString(formatstr, '%');
+
+ /* Write out all of the configuration directives by walking the
configuration tree */
- const Configuration::Item *Top = _config->Tree(0);
- for (; Top != 0;)
- {
- clog << Top->FullTag() << " \"" << Top->Value << "\";" << endl;
-
+ do {
+ if (emptyValue == true || Top->Value.empty() == emptyValue)
+ {
+ std::vector<std::string>::const_iterator f = format.begin();
+ str << *f;
+ for (++f; f != format.end(); ++f)
+ {
+ if (f->empty() == true)
+ {
+ ++f;
+ str << '%' << *f;
+ continue;
+ }
+ char const type = (*f)[0];
+ if (type == 'f')
+ str << Top->FullTag();
+ else if (type == 't')
+ str << Top->Tag;
+ else if (type == 'v')
+ str << Top->Value;
+ else if (type == 'F')
+ str << QuoteString(Top->FullTag(), "=\"\n");
+ else if (type == 'T')
+ str << QuoteString(Top->Tag, "=\"\n");
+ else if (type == 'V')
+ str << QuoteString(Top->Value, "=\"\n");
+ else if (type == 'n')
+ str << "\n";
+ else if (type == 'N')
+ str << "\t";
+ else
+ str << '%' << type;
+ str << f->c_str() + 1;
+ }
+ }
+
if (Top->Child != 0)
{
Top = Top->Child;
continue;
}
-
+
while (Top != 0 && Top->Next == 0)
Top = Top->Parent;
if (Top != 0)
Top = Top->Next;
- }
+
+ if (Root != NULL)
+ {
+ const Configuration::Item* I = Top;
+ while(I != 0)
+ {
+ if (I == Root)
+ break;
+ else
+ I = I->Parent;
+ }
+ if (I == 0)
+ break;
+ }
+ } while (Top != 0);
}
/*}}}*/
// Configuration::Item::FullTag - Return the fully scoped tag /*{{{*/
// ---------------------------------------------------------------------
-/* */
-string Configuration::Item::FullTag() const
+/* Stop sets an optional max recursion depth if this item is being viewed as
+ part of a sub tree. */
+string Configuration::Item::FullTag(const Item *Stop) const
{
- if (Parent == 0 || Parent->Parent == 0)
+ if (Parent == 0 || Parent->Parent == 0 || Parent == Stop)
return Tag;
- return Parent->FullTag() + "::" + Tag;
+ return Parent->FullTag(Stop) + "::" + Tag;
}
/*}}}*/
// ReadConfigFile - Read a configuration file /*{{{*/
// ---------------------------------------------------------------------
/* The configuration format is very much like the named.conf format
- used in bind8, in fact this routine can parse most named.conf files. */
-bool ReadConfigFile(Configuration &Conf,string FName)
+ used in bind8, in fact this routine can parse most named.conf files.
+ 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. AsSectional enables Sectional parsing.*/
+static void leaveCurrentScope(std::stack<std::string> &Stack, std::string &ParentTag)
+{
+ if (Stack.empty())
+ ParentTag.clear();
+ else
+ {
+ ParentTag = Stack.top();
+ Stack.pop();
+ }
+}
+bool ReadConfigFile(Configuration &Conf,const string &FName,bool const &AsSectional,
+ unsigned const &Depth)
{
// Open the stream for reading
- ifstream F(FName.c_str(),ios::in | ios::nocreate);
- if (!F != 0)
- return _error->Errno("ifstream::ifstream","Opening configuration file %s",FName.c_str());
-
- char Buffer[300];
+ ifstream F(FName.c_str(),ios::in);
+ if (F.fail() == true)
+ return _error->Errno("ifstream::ifstream",_("Opening configuration file %s"),FName.c_str());
+
string LineBuffer;
- string Stack[100];
- unsigned int StackPos = 0;
-
+ std::stack<std::string> Stack;
+
// Parser state
string ParentTag;
-
+
int CurLine = 0;
bool InComment = false;
while (F.eof() == false)
{
- F.getline(Buffer,sizeof(Buffer));
+ // The raw input line.
+ std::string Input;
+ // The input line with comments stripped.
+ std::string Fragment;
+
+ // Grab the next line of F and place it in Input.
+ do
+ {
+ char *Buffer = new char[1024];
+
+ F.clear();
+ F.getline(Buffer,sizeof(Buffer) / 2);
+
+ Input += Buffer;
+ delete[] Buffer;
+ }
+ while (F.fail() && !F.eof());
+
+ // Expand tabs in the input line and remove leading and trailing
+ // whitespace.
+ {
+ const int BufferSize = Input.size() * 8 + 1;
+ char *Buffer = new char[BufferSize];
+ try
+ {
+ memcpy(Buffer, Input.c_str(), Input.size() + 1);
+
+ _strtabexpand(Buffer, BufferSize);
+ _strstrip(Buffer);
+ Input = Buffer;
+ }
+ catch(...)
+ {
+ delete[] Buffer;
+ throw;
+ }
+ delete[] Buffer;
+ }
CurLine++;
- _strtabexpand(Buffer,sizeof(Buffer));
- _strstrip(Buffer);
+
+ // Now strip comments; if the whole line is contained in a
+ // comment, skip this line.
+
+ // The first meaningful character in the current fragment; will
+ // be adjusted below as we remove bytes from the front.
+ std::string::const_iterator Start = Input.begin();
+ // The last meaningful character in the current fragment.
+ std::string::const_iterator End = Input.end();
// Multi line comment
if (InComment == true)
{
- for (const char *I = Buffer; *I != 0; I++)
+ for (std::string::const_iterator I = Start;
+ I != End; ++I)
{
- if (*I == '*' && I[1] == '/')
+ if (*I == '*' && I + 1 != End && I[1] == '/')
{
- memmove(Buffer,I+2,strlen(I+2) + 1);
+ Start = I + 2;
InComment = false;
break;
- }
+ }
}
if (InComment == true)
continue;
}
-
+
// Discard single line comments
bool InQuote = false;
- for (char *I = Buffer; *I != 0; I++)
+ for (std::string::const_iterator I = Start;
+ I != End; ++I)
{
if (*I == '"')
InQuote = !InQuote;
if (InQuote == true)
continue;
-
- if (*I == '/' && I[1] == '/')
- {
- *I = 0;
+
+ if ((*I == '/' && I + 1 != End && I[1] == '/') ||
+ (*I == '#' && strcmp(string(I,I+6).c_str(),"#clear") != 0 &&
+ strcmp(string(I,I+8).c_str(),"#include") != 0))
+ {
+ End = I;
break;
}
}
- // Look for multi line comments
+ // Look for multi line comments and build up the
+ // fragment.
+ Fragment.reserve(End - Start);
InQuote = false;
- for (char *I = Buffer; *I != 0; I++)
+ for (std::string::const_iterator I = Start;
+ I != End; ++I)
{
if (*I == '"')
InQuote = !InQuote;
if (InQuote == true)
- continue;
-
- if (*I == '/' && I[1] == '*')
+ Fragment.push_back(*I);
+ else if (*I == '/' && I + 1 != End && I[1] == '*')
{
InComment = true;
- for (char *J = Buffer; *J != 0; J++)
+ for (std::string::const_iterator J = I;
+ J != End; ++J)
{
- if (*J == '*' && J[1] == '/')
+ if (*J == '*' && J + 1 != End && J[1] == '/')
{
- memmove(I,J+2,strlen(J+2) + 1);
+ // Pretend we just finished walking over the
+ // comment, and don't add anything to the output
+ // fragment.
+ I = J + 1;
InComment = false;
break;
- }
+ }
}
-
+
if (InComment == true)
- {
- *I = 0;
- break;
- }
+ break;
}
+ else
+ Fragment.push_back(*I);
}
-
- // Blank
- if (Buffer[0] == 0)
+
+ // Skip blank lines.
+ if (Fragment.empty())
continue;
-
- // We now have a valid line fragment
+
+ // The line has actual content; interpret what it means.
InQuote = false;
- for (char *I = Buffer; *I != 0;)
+ Start = Fragment.begin();
+ End = Fragment.end();
+ for (std::string::const_iterator I = Start;
+ I != End; ++I)
{
if (*I == '"')
InQuote = !InQuote;
-
+
if (InQuote == false && (*I == '{' || *I == ';' || *I == '}'))
{
- // Put the last fragement into the buffer
- char *Start = Buffer;
- char *Stop = I;
- for (; Start != I && isspace(*Start) != 0; Start++);
- for (; Stop != Start && isspace(Stop[-1]) != 0; Stop--);
- if (LineBuffer.empty() == false && Stop - Start != 0)
+ // Put the last fragment into the buffer
+ std::string::const_iterator NonWhitespaceStart = Start;
+ std::string::const_iterator NonWhitespaceStop = I;
+ for (; NonWhitespaceStart != I && isspace(*NonWhitespaceStart) != 0; ++NonWhitespaceStart)
+ ;
+ for (; NonWhitespaceStop != NonWhitespaceStart && isspace(NonWhitespaceStop[-1]) != 0; --NonWhitespaceStop)
+ ;
+ if (LineBuffer.empty() == false && NonWhitespaceStop - NonWhitespaceStart != 0)
LineBuffer += ' ';
- LineBuffer += string(Start,Stop - Start);
-
- // Remove the fragment
+ LineBuffer += string(NonWhitespaceStart, NonWhitespaceStop);
+
+ // Drop this from the input string, saving the character
+ // that terminated the construct we just closed. (i.e., a
+ // brace or a semicolon)
char TermChar = *I;
- memmove(Buffer,I + 1,strlen(I + 1) + 1);
- I = Buffer;
+ Start = I + 1;
- // Move up a tag
- if (TermChar == '}')
- {
- if (StackPos == 0)
- ParentTag = string();
- else
- ParentTag = Stack[--StackPos];
- }
-
// Syntax Error
if (TermChar == '{' && LineBuffer.empty() == true)
- return _error->Error("Syntax error %s:%u: Block starts with no name.",FName.c_str(),CurLine);
-
+ return _error->Error(_("Syntax error %s:%u: Block starts with no name."),FName.c_str(),CurLine);
+
+ // No string on this line
if (LineBuffer.empty() == true)
+ {
+ if (TermChar == '}')
+ leaveCurrentScope(Stack, ParentTag);
continue;
+ }
// Parse off the tag
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);
-
- // Go down a level
- if (TermChar == '{')
- {
- if (StackPos <= 100)
- Stack[StackPos++] = ParentTag;
- if (ParentTag.empty() == true)
- ParentTag = Tag;
- else
- ParentTag += string("::") + Tag;
- Tag = string();
- }
+ return _error->Error(_("Syntax error %s:%u: Malformed tag"),FName.c_str(),CurLine);
// Parse off the word
string Word;
- if (ParseCWord(Pos,Word) == false)
+ bool NoWord = false;
+ if (ParseCWord(Pos,Word) == false &&
+ ParseQuoteWord(Pos,Word) == false)
{
if (TermChar != '{')
{
Word = Tag;
Tag = "";
- }
+ }
+ else
+ NoWord = true;
+ }
+ if (strlen(Pos) != 0)
+ return _error->Error(_("Syntax error %s:%u: Extra junk after value"),FName.c_str(),CurLine);
+
+ // Go down a level
+ if (TermChar == '{')
+ {
+ Stack.push(ParentTag);
+
+ /* Make sectional tags incorperate the section into the
+ tag string */
+ if (AsSectional == true && Word.empty() == false)
+ {
+ Tag.append("::").append(Word);
+ Word.clear();
+ }
+
+ if (ParentTag.empty() == true)
+ ParentTag = Tag;
+ else
+ ParentTag.append("::").append(Tag);
+ Tag.clear();
}
-
+
// Generate the item name
string Item;
if (ParentTag.empty() == true)
else
Item = ParentTag;
}
-
- // Set the item in the configuration class
- Conf.Set(Item,Word);
-
+
+ // Specials
+ if (Tag.length() >= 1 && Tag[0] == '#')
+ {
+ if (ParentTag.empty() == false)
+ return _error->Error(_("Syntax error %s:%u: Directives can only be done at the top level"),FName.c_str(),CurLine);
+ Tag.erase(Tag.begin());
+ if (Tag == "clear")
+ Conf.Clear(Word);
+ else if (Tag == "include")
+ {
+ if (Depth > 10)
+ return _error->Error(_("Syntax error %s:%u: Too many nested includes"),FName.c_str(),CurLine);
+ if (Word.length() > 2 && Word.end()[-1] == '/')
+ {
+ if (ReadConfigDir(Conf,Word,AsSectional,Depth+1) == false)
+ return _error->Error(_("Syntax error %s:%u: Included from here"),FName.c_str(),CurLine);
+ }
+ else
+ {
+ if (ReadConfigFile(Conf,Word,AsSectional,Depth+1) == false)
+ return _error->Error(_("Syntax error %s:%u: Included from here"),FName.c_str(),CurLine);
+ }
+ }
+ else
+ return _error->Error(_("Syntax error %s:%u: Unsupported directive '%s'"),FName.c_str(),CurLine,Tag.c_str());
+ }
+ else if (Tag.empty() == true && NoWord == false && Word == "#clear")
+ return _error->Error(_("Syntax error %s:%u: clear directive requires an option tree as argument"),FName.c_str(),CurLine);
+ else
+ {
+ // Set the item in the configuration class
+ if (NoWord == false)
+ Conf.Set(Item,Word);
+ }
+
// Empty the buffer
- LineBuffer = string();
+ LineBuffer.clear();
+
+ // Move up a tag, but only if there is no bit to parse
+ if (TermChar == '}')
+ leaveCurrentScope(Stack, ParentTag);
}
- else
- I++;
}
- // Store the fragment
- const char *Stripd = _strstrip(Buffer);
- if (*Stripd != 0 && LineBuffer.empty() == false)
- LineBuffer += " ";
- LineBuffer += Stripd;
+ // Store the remaining text, if any, in the current line buffer.
+
+ // NB: could change this to use string-based operations; I'm
+ // using strstrip now to ensure backwards compatibility.
+ // -- dburrows 2008-04-01
+ {
+ char *Buffer = new char[End - Start + 1];
+ try
+ {
+ std::copy(Start, End, Buffer);
+ Buffer[End - Start] = '\0';
+
+ const char *Stripd = _strstrip(Buffer);
+ if (*Stripd != 0 && LineBuffer.empty() == false)
+ LineBuffer += " ";
+ LineBuffer += Stripd;
+ }
+ catch(...)
+ {
+ delete[] Buffer;
+ throw;
+ }
+ delete[] Buffer;
+ }
}
-
+
+ if (LineBuffer.empty() == false)
+ return _error->Error(_("Syntax error %s:%u: Extra junk at end of file"),FName.c_str(),CurLine);
+ return true;
+}
+ /*}}}*/
+// ReadConfigDir - Read a directory of config files /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ReadConfigDir(Configuration &Conf,const string &Dir,
+ bool const &AsSectional, unsigned const &Depth)
+{
+ vector<string> const List = GetListOfFilesInDir(Dir, "conf", true, true);
+
+ // Read the files
+ for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
+ if (ReadConfigFile(Conf,*I,AsSectional,Depth) == false)
+ return false;
return true;
}
/*}}}*/
+// MatchAgainstConfig Constructor /*{{{*/
+Configuration::MatchAgainstConfig::MatchAgainstConfig(char const * Config)
+{
+ std::vector<std::string> const strings = _config->FindVector(Config);
+ for (std::vector<std::string>::const_iterator s = strings.begin();
+ s != strings.end(); ++s)
+ {
+ regex_t *p = new regex_t;
+ if (regcomp(p, s->c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB) == 0)
+ patterns.push_back(p);
+ else
+ {
+ regfree(p);
+ delete p;
+ _error->Warning("Invalid regular expression '%s' in configuration "
+ "option '%s' will be ignored.",
+ s->c_str(), Config);
+ continue;
+ }
+ }
+ if (strings.empty() == true)
+ patterns.push_back(NULL);
+}
+ /*}}}*/
+// MatchAgainstConfig Destructor /*{{{*/
+Configuration::MatchAgainstConfig::~MatchAgainstConfig()
+{
+ clearPatterns();
+}
+void Configuration::MatchAgainstConfig::clearPatterns()
+{
+ for(std::vector<regex_t *>::const_iterator p = patterns.begin();
+ p != patterns.end(); ++p)
+ {
+ if (*p == NULL) continue;
+ regfree(*p);
+ delete *p;
+ }
+ patterns.clear();
+}
+ /*}}}*/
+// MatchAgainstConfig::Match - returns true if a pattern matches /*{{{*/
+bool Configuration::MatchAgainstConfig::Match(char const * str) const
+{
+ for(std::vector<regex_t *>::const_iterator p = patterns.begin();
+ p != patterns.end(); ++p)
+ if (*p != NULL && regexec(*p, str, 0, 0, 0) == 0)
+ return true;
+
+ return false;
+}
+ /*}}}*/
projects / apt.git / blobdiff