source: Dev/trunk/src/client/util/build/transforms/depsDump.js

define([
        "../buildControl",
        "../fileUtils",
        "../fs",
        "dojo/_base/lang",
        "dojo/_base/array",
        "dojo/json"
], function(bc, fileUtils, fs, lang, array, json){
        return function(resource, callback){
                if(!bc.depsDumpDotFilename && !bc.depsDumpFilename){
                        return 0;
                }

                var dotModules = 0, traceForDot = {}, traceForDotDone = {};
                if(bc.dotModules){
                        dotModules = {};
                        array.forEach(bc.dotModules.split(","), function(module){
                                dotModules[lang.trim(module)] = traceForDot;
                        });
                }

                var modules = [],
                        midToId = {},
                        i = 0,
                        dotOutput = "digraph {\n",
                        r, p, destFilename;
                for(p in bc.resources){
                        r = bc.resources[p];
                        if(r.deps){
                                if(!dotModules || dotModules[r.mid]){
                                        dotModules[r.mid] = traceForDotDone;
                                        r.deps.forEach(function(module){
                                                dotOutput += '"' + r.mid + '" -> "' + module.mid + '";\n';
                                                if (dotModules[module.mid]!==traceForDotDone){
                                                        dotModules[module.mid] = traceForDot;
                                                }
                                        });
                                }
                                r.uid = i;
                                midToId[bc.resources[p].mid] = i;
                                modules.push(r);
                                i++;
                        }
                }

                if(bc.depsDumpDotFilename){
                        var foundOne = dotModules;
                        while(foundOne){
                                foundOne = false;
                                for(p in bc.resources){
                                        r = bc.resources[p];
                                        if(dotModules[r.mid]==traceForDot){
                                                foundOne = true;
                                                dotModules[r.mid] = traceForDotDone;
                                                if(r.deps){
                                                        r.deps.forEach(function(module){
                                                                dotOutput += '"' + r.mid + '" -> "' + module.mid + '";\n';
                                                                if (dotModules[module.mid]!==traceForDotDone){
                                                                        dotModules[module.mid] = traceForDot;
                                                                }
                                                        });
                                                }
                                        }
                                }
                        }
                        dotOutput += "}\n";

                        var filename = fileUtils.computePath(bc.depsDumpDotFilename, bc.destBasePath);
                        fileUtils.ensureDirectory(fileUtils.getFilepath(filename));
                        fs.writeFileSync(filename, dotOutput, "ascii");
                }

                if(bc.depsDumpFilename){
                        var depsTree = modules.map(function(module){
                                        return module.deps.map(function(item){ return item.uid; });
                                }),
                                idTree = {},
                                getItem = function(parts, bag){
                                        var part = parts.shift();
                                        if(!(part in bag)){
                                                bag[part] = {};
                                        }
                                        if(parts.length){
                                                return getItem(parts, bag[part]);
                                        }else{
                                                return bag[part];
                                        }
                                };
                        modules.forEach(function(item, i){
                                var parts = item.mid.split("/");
                                getItem(parts, idTree)["*"] = i;
                        });

                        filename = fileUtils.computePath(bc.depsDumpFilename, bc.destBasePath);
                        fileUtils.ensureDirectory(fileUtils.getFilepath(filename));
                        fs.writeFileSync(filename, json.stringify({depsTree:depsTree, idTree:idTree}), "ascii");
                }

                return 0;
        };
});