8 //TODO: Make this work for variable sized Reals
10 // Loads an std::vector<T> of size num_elements from a file.
12 static void LoadStructVector(FILE *src_file, size_t num_elems, std::vector<T>& dest)
14 size_t structsread = 0;
15 dest.resize(num_elems);
16 structsread = fread(dest.data(), sizeof(T), num_elems, src_file);
17 if (structsread != num_elems)
18 Fatal("Only read %u structs (expected %u)!", structsread, num_elems);
21 // Saves an std::vector<T> to a file. Size must be saves separately.
23 static void SaveStructVector(FILE *dst_file, std::vector<T>& src)
26 written = fwrite(src.data(), sizeof(T), src.size(), dst_file);
27 if (written != src.size())
28 Fatal("Only wrote %u structs (expected %u)!", written, src.size());
31 static void WriteChunkHeader(FILE *dst_file, DocChunkTypes type, uint32_t size)
34 written = fwrite(&type, sizeof(type), 1, dst_file);
36 Fatal("Could not write Chunk header! (ID)");
37 written = fwrite(&size, sizeof(size), 1, dst_file);
39 Fatal("Could not write Chunk header (size)!");
42 static bool ReadChunkHeader(FILE *src_file, DocChunkTypes& type, uint32_t& size)
44 if (fread(&type, sizeof(DocChunkTypes), 1, src_file) != 1)
46 if (fread(&size, sizeof(uint32_t), 1, src_file) != 1)
51 void Document::Save(const string & filename)
53 Debug("Saving document to file \"%s\"...", filename.c_str());
54 FILE * file = fopen(filename.c_str(), "w");
56 Fatal("Couldn't open file \"%s\" - %s", filename.c_str(), strerror(errno));
59 Debug("Number of objects (%u)...", ObjectCount());
60 WriteChunkHeader(file, CT_NUMOBJS, sizeof(m_count));
61 written = fwrite(&m_count, sizeof(m_count), 1, file);
63 Fatal("Failed to write number of objects!");
65 Debug("Object types...");
66 WriteChunkHeader(file, CT_OBJTYPES, m_objects.types.size() * sizeof(ObjectType));
67 SaveStructVector<ObjectType>(file, m_objects.types);
69 Debug("Object bounds...");
70 WriteChunkHeader(file, CT_OBJBOUNDS, m_objects.bounds.size() * sizeof(Rect));
71 SaveStructVector<Rect>(file, m_objects.bounds);
73 Debug("Object data indices...");
74 WriteChunkHeader(file, CT_OBJINDICES, m_objects.data_indices.size() * sizeof(unsigned));
75 SaveStructVector<unsigned>(file, m_objects.data_indices);
77 Debug("Bezier data...");
78 WriteChunkHeader(file, CT_OBJBEZIERS, m_objects.beziers.size() * sizeof(uint8_t));
79 SaveStructVector<Bezier>(file, m_objects.beziers);
81 int err = fclose(file);
83 Fatal("Failed to close file \"%s\" - %s", filename.c_str(), strerror(err));
85 Debug("Successfully saved %u objects to \"%s\"", ObjectCount(), filename.c_str());
88 void Document::Load(const string & filename)
90 m_objects.bounds.clear();
94 Debug("Loaded empty document.");
97 Debug("Loading document from file \"%s\"", filename.c_str());
98 FILE * file = fopen(filename.c_str(), "r");
100 Fatal("Couldn't open file \"%s\"", filename.c_str(), strerror(errno));
104 DocChunkTypes chunk_type;
106 while (ReadChunkHeader(file, chunk_type, chunk_size))
111 read = fread(&m_count, sizeof(m_count), 1, file);
113 Fatal("Failed to read number of objects!");
114 Debug("Number of objects: %u", ObjectCount());
117 Debug("Object types...");
118 LoadStructVector<ObjectType>(file, chunk_size/sizeof(ObjectType), m_objects.types);
121 Debug("Object bounds...");
122 LoadStructVector<Rect>(file, chunk_size/sizeof(Rect), m_objects.bounds);
125 Debug("Object data indices...");
126 LoadStructVector<unsigned>(file, chunk_size/sizeof(unsigned), m_objects.data_indices);
129 Debug("Bezier data...");
130 LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
134 Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
137 void Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
139 m_objects.types.push_back(type);
140 m_objects.bounds.push_back(bounds);
141 m_objects.data_indices.push_back(data_index);
142 ++m_count; // Why can't we just use the size of types or something?
145 unsigned Document::AddBezierData(const Bezier & bezier)
147 m_objects.beziers.push_back(bezier);
148 return m_objects.beziers.size()-1;
152 void Document::DebugDumpObjects()
154 Debug("Objects for Document %p are:", this);
155 for (unsigned id = 0; id < ObjectCount(); ++id)
157 Debug("%u. \tType: %u\tBounds: %s", id, m_objects.types[id], m_objects.bounds[id].Str().c_str());
161 bool Document::operator==(const Document & equ) const
163 return (ObjectCount() == equ.ObjectCount()
164 && memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0
165 && memcmp(m_objects.data_indices.data(), equ.m_objects.data_indices.data(), ObjectCount() * sizeof(unsigned)) == 0
166 && memcmp(m_objects.beziers.data(), equ.m_objects.beziers.data(), m_objects.beziers.size() * sizeof(Bezier)) == 0);