reactos/rosapps/packmgr/lib/tree.cpp
Martin Fuchs 4f8cc9596c update SVN properties
svn path=/trunk/; revision=17143
2005-08-07 07:33:14 +00:00

127 lines
2.9 KiB
C++

////////////////////////////////////////////////////////
//
// tree.cpp
//
// Loading of the package tree
//
//
// Maarten Bosma, 09.01.2004
// maarten.paul@bosma.de
//
////////////////////////////////////////////////////////////////////
#include "package.hpp"
#include "expat.h"
vector <int> parents;
int LoadOptions (TREE* tree);
void tree_end (void* tree, const char* tag);
void tree_start (void* usrdata, const char* tag, const char** arg);
int PML_XmlDownload (pTree tree, const char* file, void* usrdata, XML_StartElementHandler start,
XML_EndElementHandler end, XML_CharacterDataHandler text=0);
// Load the tree
extern "C" int PML_LoadTree (TREE** tree, char* url, PML_AddItem AddItem)
{
// get the memory
(*tree) = new TREE;
// set every to zero
memset((*tree), 0, sizeof((*tree)));
// set addItem callback
(*tree)->addItem = AddItem;
LoadOptions(*tree);
return PML_XmlDownload (*tree, url, (void*)(*tree), tree_start, tree_end);
}
// expat callback for start of a "node" tag
void tree_start (void* usrdata, const char* tag, const char** arg)
{
int i, icon = 0;
static int id = 1;
TREE* tree = (TREE*)usrdata;
// ignore if tag is the root tag ("tree")
if(!strcmp(tag, "tree"))
return;
// set the package memory
tree->packages.resize(id+1);
memset(&tree->packages[id], 0, sizeof(tree->packages[id]));
tree->packages[id].loaded = FALSE;
tree->packages[id].icon = FALSE;
tree->packages[id].none = TRUE;
tree->packages[id].path = NULL;
tree->packages[id].name = "\0";
// read the arguments
for (i=0; arg[i]; i+=2)
{
if(!strcmp(arg[i], "name"))
{
tree->packages[id].name = new char [strlen(arg[i+1])+1];
strcpy(tree->packages[id].name, arg[i+1]);
}
if(!strcmp(arg[i], "icon"))
{
icon = atoi(arg[i+1]);
tree->packages[id].icon = TRUE;
}
if(!strcmp(arg[i], "file"))
{
tree->packages[id].path = new char [strlen(arg[i+1])+1];
strcpy(tree->packages[id].path, arg[i+1]);
if(strcmp(tag, "bin"))
tree->packages[id].inst = TRUE;
if(strcmp(tag, "src"))
tree->packages[id].src_inst = TRUE;
}
}
if(tree->packages[id].name[0] == '\0') return;
// add it
if(!parents.size())
{
if(tree->addItem)
tree->addItem(id, tree->packages[id].name, 0, icon);
}
// do some manipulation at the parent
else
{
if(tree->addItem)
tree->addItem(id, tree->packages[id].name, parents.back(), icon);
// list as child in the parent node
tree->packages[parents.back()].children.push_back(id);
// this is for the buttons
tree->packages[parents.back()].inst = tree->packages[parents.back()].inst || tree->packages[id].inst;
tree->packages[parents.back()].src_inst = tree->packages[parents.back()].src_inst || tree->packages[id].src_inst;
}
parents.push_back(id++);
}
// expat callback for end of a "node" tag
void tree_end (void* tree, const char* tag)
{
// delete last item
parents.pop_back();
}