8 // Loads an std::vector<T> of size num_elements from a file.
10 static void LoadStructVector(FILE *src_file, size_t num_elems, std::vector<T>& dest)
12 size_t structsread = 0;
13 dest.resize(num_elems);
14 structsread = fread(dest.data(), sizeof(T), num_elems, src_file);
15 if (structsread != num_elems)
16 Fatal("Only read %u structs (expected %u)!", structsread, num_elems);
19 // Saves an std::vector<T> to a file. Size must be saves separately.
21 static void SaveStructVector(FILE *dst_file, std::vector<T>& src)
24 written = fwrite(src.data(), sizeof(T), src.size(), dst_file);
25 if (written != src.size())
26 Fatal("Only wrote %u structs (expected %u)!", written, src.size());
29 static void WriteChunkHeader(FILE *dst_file, DocChunkTypes type, uint32_t size)
32 written = fwrite(&type, sizeof(type), 1, dst_file);
34 Fatal("Could not write Chunk header! (ID)");
35 written = fwrite(&size, sizeof(size), 1, dst_file);
37 Fatal("Could not write Chunk header (size)!");
40 static bool ReadChunkHeader(FILE *src_file, DocChunkTypes& type, uint32_t& size)
42 if (fread(&type, sizeof(DocChunkTypes), 1, src_file) != 1)
44 if (fread(&size, sizeof(uint32_t), 1, src_file) != 1)
49 void Document::Save(const string & filename)
51 Debug("Saving document to file \"%s\"...", filename.c_str());
52 FILE * file = fopen(filename.c_str(), "w");
54 Fatal("Couldn't open file \"%s\" - %s", filename.c_str(), strerror(errno));
57 Debug("Number of objects (%u)...", ObjectCount());
58 WriteChunkHeader(file, CT_NUMOBJS, sizeof(m_count));
59 written = fwrite(&m_count, sizeof(m_count), 1, file);
61 Fatal("Failed to write number of objects!");
63 Debug("Object types...");
64 WriteChunkHeader(file, CT_OBJTYPES, m_objects.types.size() * sizeof(ObjectType));
65 SaveStructVector<ObjectType>(file, m_objects.types);
67 Debug("Object bounds...");
68 WriteChunkHeader(file, CT_OBJBOUNDS, m_objects.bounds.size() * sizeof(Rect));
69 SaveStructVector<Rect>(file, m_objects.bounds);
71 int err = fclose(file);
73 Fatal("Failed to close file \"%s\" - %s", filename.c_str(), strerror(err));
75 Debug("Successfully saved %u objects to \"%s\"", ObjectCount(), filename.c_str());
78 void Document::Load(const string & filename)
80 m_objects.bounds.clear();
84 Debug("Loaded empty document.");
87 Debug("Loading document from file \"%s\"", filename.c_str());
88 FILE * file = fopen(filename.c_str(), "r");
90 Fatal("Couldn't open file \"%s\"", filename.c_str(), strerror(errno));
94 DocChunkTypes chunk_type;
96 while (ReadChunkHeader(file, chunk_type, chunk_size))
101 read = fread(&m_count, sizeof(m_count), 1, file);
103 Fatal("Failed to read number of objects!");
104 Debug("Number of objects: %u", ObjectCount());
107 Debug("Object types...");
108 LoadStructVector<ObjectType>(file, chunk_size/sizeof(ObjectType), m_objects.types);
111 Debug("Object bounds...");
112 LoadStructVector<Rect>(file, chunk_size/sizeof(Rect), m_objects.bounds);
116 Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
119 void Document::Add(ObjectType type, const Rect & bounds)
121 m_objects.types.push_back(type);
122 m_objects.bounds.push_back(bounds);
126 void Document::DebugDumpObjects()
128 Debug("Objects for Document %p are:", this);
129 for (unsigned id = 0; id < ObjectCount(); ++id)
131 Debug("%u. \tType: %u\tBounds: %s", id, m_objects.types[id], m_objects.bounds[id].Str().c_str());
135 bool Document::operator==(const Document & equ) const
137 return (ObjectCount() == equ.ObjectCount() && memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0);