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