src/esi/Parser.cc

   1 /*
   2  * Copyright (C) 1996-2021 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 86    ESI processing */
  10
  11 #include "squid.h"
  12 #include "esi/Parser.h"
  13 #include "fatal.h"
  14
  15 char *ESIParser::Type = NULL;
  16 ESIParser::Register *ESIParser::Parser = NULL;
  17
  18 std::list<ESIParser::Register *> &
  19 ESIParser::GetRegistry()
  20 {
  21     static std::list<ESIParser::Register *> parsers;
  22     return parsers;
  23 }
  24
  25 ESIParser::Pointer
  26 ESIParser::NewParser(ESIParserClient *aClient)
  27 {
  28     if (Parser == NULL) {
  29         Parser = GetRegistry().front();
  30
  31         // if type name matters, use it
  32         if (strcasecmp(Type, "auto") != 0) {
  33             for (auto *p : GetRegistry()) {
  34                 if (p && strcasecmp(p->name, Type) != 0)
  35                     Parser = p;
  36             }
  37         }
  38
  39         if (Parser == NULL)
  40             fatal ("Unknown ESI Parser type");
  41     }
  42
  43     return (Parser->newParser)(aClient);
  44 }
  45
  46 ESIParser::Register::Register(const char *_name, ESIParser::Pointer (*_newParser)(ESIParserClient *aClient)) : name(_name), newParser(_newParser)
  47 {
  48     ESIParser::GetRegistry().emplace_back(this);
  49 }
  50
  51 ESIParser::Register::~Register()
  52 {
  53     ESIParser::GetRegistry().remove(this);
  54 }
  55