winamp/Src/Wasabi/api/config/config.cpp

#include <precomp.h>

#include "config.h"
#include <bfc/pair.h>
#include <bfc/ptrlist.h>
#include <bfc/parse/pathparse.h>
#include <api/xml/xmlwrite.h>

#include "../xml/ifc_xmlreadercallbackI.h"
#include "../xml/obj_xml.h"
#include <bfc/string/url.h>
#include <api/service/waservicefactory.h>

static StringW iniFile;
#define XNFNAME L"studio.xnf"

class StringPairCompare
{
public:
  static int compareItem(StringPair *p1, StringPair *p2)
  {
    int r = wcscmp(p1->a.getValue(), p2->a.getValue());
    if (r == 0)
			return CMP3(p1, p2);
    else 
			return r;
  }
  static int compareAttrib(const wchar_t *attrib, StringPair *item)
  {
    return wcscmp(attrib, item->a.getValue());
  }
};

static PtrListQuickSorted<StringPair, StringPairCompare> strings;

class Reader : public ifc_xmlreadercallbackI
{
public:
  ~Reader();
  void xmlReaderOnStartElementCallback(const wchar_t *xmlpath, const wchar_t *xmltag, ifc_xmlreaderparams *params);
  void xmlReaderOnEndElementCallback(const wchar_t *xmlpath, const wchar_t *xmltag);

  void readem();

private:
  PtrList<StringW> sections;
};

Reader::~Reader()
{
  sections.deleteAll();
}

void Reader::xmlReaderOnStartElementCallback(const wchar_t *xmlpath, const wchar_t *xmltag, ifc_xmlreaderparams *params)
{
  if (!WCSICMP(xmltag, L"section"))
  {
    const wchar_t *name = params->getItemValue(L"name");
    if (name == NULL) 
      return ;

    StringW *strName = new StringW(name);
    Url::decode(*strName);
    sections.addItem(strName);
  }
  else if (!WCSICMP(xmltag, L"entry"))
  {
    const wchar_t *name = params->getItemValue(L"name");
    const wchar_t *value = params->getItemValue(L"value");

    // just in case
    if (!WCSICMP(name, L"(null)")) name = NULL;
    if (!WCSICMP(value, L"(null)")) value = NULL;

    if (name == NULL /*| !*name */ || value == NULL /*|| !*value*/) return ;
    StringW strName = name;
    Url::decode(strName);

		StringW strValue = value;
    Url::decode(strValue);

    StringW n;
    for (int i = 0; i < sections.getNumItems(); i++)
    {
      n.catPostSeparator(*sections[i], '/');
    }
    n += strName;
    
    StringPair *p = new StringPair(n, strValue);
    strings.addItem(p);
  }
}

void Reader::xmlReaderOnEndElementCallback(const wchar_t *xmlpath, const wchar_t *xmltag)
{
  if (!WCSICMP(xmltag, L"section"))
  {
    StringW *last = sections.getLast();
    sections.removeLastItem();
    delete last;
  }
}

void LoadXmlFile(obj_xml *parser, const wchar_t *filename);

void Reader::readem()
{
  strings.deleteAll();
 
  if (iniFile.isempty())
  {   
    iniFile = StringPathCombine(WASABI_API_APP->path_getUserSettingsPath(), XNFNAME);
  }

  waServiceFactory *parserFactory = WASABI_API_SVC->service_getServiceByGuid(obj_xmlGUID);
  if (parserFactory)
  {
    obj_xml *parser = (obj_xml *)parserFactory->getInterface();

    if (parser)
    {

      parser->xmlreader_registerCallback(L"WinampXML\fconfiguration\f*", this);
      parser->xmlreader_registerCallback(L"WasabiXML\fconfiguration\f*", this);
      parser->xmlreader_open();
      LoadXmlFile(parser, iniFile);

      parser->xmlreader_unregisterCallback(this);
      parser->xmlreader_close();
      parserFactory->releaseInterface(parser);
      parser = 0;
    }
  }
}

StringPair *ConfigFile::getPair(const wchar_t *name)
{
  ASSERT(!sectionname.isempty());
	StringW nname;
		nname.catPostSeparator(sectionname.getValue(), '/');
		nname.cat(name);
  return strings.findItem(nname.getValue()); // cast to make PtrListSorted happy
}

StringPair *ConfigFile::makePair(const wchar_t *name, const wchar_t *value)
{
  StringPair *ret = getPair(name);
  if (ret == NULL)
  {
		StringW nname;
		nname.catPostSeparator(sectionname.getValue(), '/');
		nname.cat(name);

    ret = new StringPair(nname, value);
    strings.addItem(ret);
  }
  else
  {
    ret->b.setValue(value);
  }
  return ret;
}

static int ninstances, inited;

ConfigFile::ConfigFile(const wchar_t *section, const wchar_t *name)
{
  sectionname = section;
  prettyname = name;
  ninstances++;
}

void ConfigFile::initialize()
{
  Reader().readem();
}

ConfigFile::~ConfigFile()
{
  ninstances--;
  if (ninstances == 0)
  {
    FILE *fp = _wfopen(iniFile, WF_WRITE_TEXT);
    if (fp != NULL)
    {
      // write out the file
      XMLWrite xml(fp, L"WasabiXML");
      const wchar_t *app = WASABI_API_APP->main_getVersionString();
      if (!app) 
				app = L"thousands of irascible butt monkeys";
      xml.comment(StringPrintfW(L"Generated by: %s (%d)", app, WASABI_API_APP->main_getBuildNumber()));
      xml.pushCategory(L"configuration");

      PtrList<StringW> cats;

      for (int i = 0; i < strings.getNumItems(); i++)
      {
        StringPair *p = strings[i];
        PathParserW pp(p->a);

        int climit = MIN(pp.getNumStrings() - 1, cats.getNumItems());
        int j;
        for (j = 0; j < climit; j++)
        {
          if (WCSICMP(*cats[j], pp.enumString(j)))
          {
            climit = j;
            break;
          }
        }

        while (cats.getNumItems() > climit)
        {
          StringW *s = cats.getLast();
          xml.popCategory();
          cats.removeLastItem();
          delete s;
        }
        for (j = climit; j < pp.getNumStrings() - 1; j++)
        {
          StringW *s = cats.addItem(new StringW(pp.enumString(j)));
          xml.pushCategoryAttrib(L"section");
          StringW enc = *s;
          Url::encode(enc, FALSE, URLENCODE_EXCLUDE_ABOVEEQ32);
          xml.writeCategoryAttrib(L"name", enc);
          xml.closeCategoryAttrib();
        }

        xml.pushCategoryAttrib(L"entry", TRUE);
        StringW enc = pp.getLastString();
        Url::encode(enc, FALSE, URLENCODE_EXCLUDE_ABOVEEQ32);
        xml.writeCategoryAttrib(L"name", enc);
        enc = p->b;
        Url::encode(enc, FALSE, URLENCODE_EXCLUDE_ABOVEEQ32);
        if (enc.iscaseequal(L"(null)") || enc.getValue() == NULL)
          enc.setValue(L"");
        xml.writeCategoryAttrib(L"value", enc);
        xml.closeCategoryAttrib();
        xml.popCategory();
      }

      while (xml.popCategory()) ;

      strings.deleteAll();
      fclose(fp);
    } // fp != NULL
  }	// ninstances==0
}

int verifyName(const wchar_t *str)
{
  for (const wchar_t *p = str; *p; p++)
  {
    if (!ISALPHA(*p) &&
      !ISDIGIT(*p) &&
      !ISPUNCT(*p) &&
      !ISSPACE(*p) &&
      *p != '|' && *p != '_')
      return 0;
  }
  return 1;
}

void ConfigFile::setInt(const wchar_t *name, int val)
{
  INCRITICALSECTION(cs);
  if (name == NULL) return ;
  if (!verifyName(name))
  {
    DebugStringW(L"illegal name given\n");
    //__asm { int 3 };
    return ;
  }
  makePair(name, StringPrintfW(val));
}

int ConfigFile::getInt(const wchar_t *name, int def_val)
{
  INCRITICALSECTION(cs);
  if (name == NULL) return def_val;
  StringPair *p = getPair(name);
  if (p == NULL) return def_val;
  return WTOI(p->b.getValue());
}

void ConfigFile::setString(const wchar_t *name, const wchar_t *str)
{
  INCRITICALSECTION(cs);
  if (name == NULL) return ;
  if (!verifyName(name))
  {
    DebugStringW(L"illegal name given\n");
    return ;
  }
  if (str == NULL)
  {
    StringPair *p = getPair(name);
    if (p != NULL)
    {
      strings.delItem(p);
      delete p;
      return ;
    }
  }
  makePair(name, str);
}

int ConfigFile::getString(const wchar_t *name, wchar_t *buf, int buf_len, const wchar_t *def_str)
{
  INCRITICALSECTION(cs);
  if (name == NULL || buf == NULL) return -1;
  if (def_str == NULL)
		def_str = L"";
  StringPair *p = getPair(name);
  if (p == NULL)
    WCSCPYN(buf, def_str, buf_len);
  else
    WCSCPYN(buf, p->b.getValueSafe(), buf_len);
  return 1;
}

int ConfigFile::getStringLen(const wchar_t *name)
{
  INCRITICALSECTION(cs);
  if (name == NULL) return -1;
  StringPair *p = getPair(name);
  if (p == NULL) return -1;
  return wcslen(p->b.getValue());
}