X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fdocument.cpp;h=921763a827590e89d5a3d8cbfd6a830387e417ea;hp=99e429e9ec862ed44d8a2526f31c66ebb08f1296;hb=3ab3475a54c82cb9f5e0b1dbb88035f341b92d49;hpb=b006386ab52e8a2c47c20bc21591d01c314d4d8e

diff --git a/src/document.cpp b/src/document.cpp
index 99e429e..921763a 100644
--- a/src/document.cpp
+++ b/src/document.cpp
@@ -1,18 +1,167 @@
 #include "document.h"
+#include "bezier.h"
+#include <cstdio>
 
 using namespace IPDF;
 using namespace std;
 
+//TODO: Make this work for variable sized Reals
+
+// Loads an std::vector<T> of size num_elements from a file.
+template<typename T>
+static void LoadStructVector(FILE *src_file, size_t num_elems, std::vector<T>& dest)
+{
+	size_t structsread = 0;
+	dest.resize(num_elems);
+	structsread = fread(dest.data(), sizeof(T), num_elems, src_file);
+	if (structsread != num_elems)
+		Fatal("Only read %u structs (expected %u)!", structsread, num_elems);
+}
+
+// Saves an std::vector<T> to a file. Size must be saves separately.
+template<typename T>
+static void SaveStructVector(FILE *dst_file, std::vector<T>& src)
+{
+	size_t written = 0;
+	written = fwrite(src.data(), sizeof(T), src.size(), dst_file);
+	if (written != src.size())
+		Fatal("Only wrote %u structs (expected %u)!", written, src.size());
+}
+
+static void WriteChunkHeader(FILE *dst_file, DocChunkTypes type, uint32_t size)
+{
+	size_t written = 0;
+	written = fwrite(&type, sizeof(type), 1, dst_file);
+	if (written != 1)
+		Fatal("Could not write Chunk header! (ID)");
+	written = fwrite(&size, sizeof(size), 1, dst_file);
+	if (written != 1)
+		Fatal("Could not write Chunk header (size)!");
+}
+
+static bool ReadChunkHeader(FILE *src_file, DocChunkTypes& type, uint32_t& size)
+{
+	if (fread(&type, sizeof(DocChunkTypes), 1, src_file) != 1)
+		return false;
+	if (fread(&size, sizeof(uint32_t), 1, src_file) != 1)
+		return false;
+	return true;
+}
+
+void Document::Save(const string & filename)
+{
+	Debug("Saving document to file \"%s\"...", filename.c_str());
+	FILE * file = fopen(filename.c_str(), "w");
+	if (file == NULL)
+		Fatal("Couldn't open file \"%s\" - %s", filename.c_str(), strerror(errno));
+
+	size_t written;
+	Debug("Number of objects (%u)...", ObjectCount());
+	WriteChunkHeader(file, CT_NUMOBJS, sizeof(m_count));
+	written = fwrite(&m_count, sizeof(m_count), 1, file);
+	if (written != 1)
+		Fatal("Failed to write number of objects!");
+
+	Debug("Object types...");
+	WriteChunkHeader(file, CT_OBJTYPES, m_objects.types.size() * sizeof(ObjectType));
+	SaveStructVector<ObjectType>(file, m_objects.types);
+
+	Debug("Object bounds...");
+	WriteChunkHeader(file, CT_OBJBOUNDS, m_objects.bounds.size() * sizeof(Rect));
+	SaveStructVector<Rect>(file, m_objects.bounds);
+
+	Debug("Object data indices...");
+	WriteChunkHeader(file, CT_OBJINDICES, m_objects.data_indices.size() * sizeof(unsigned));
+	SaveStructVector<unsigned>(file, m_objects.data_indices);
+	
+	Debug("Bezier data...");
+	WriteChunkHeader(file, CT_OBJBEZIERS, m_objects.beziers.size() * sizeof(uint8_t));
+	SaveStructVector<Bezier>(file, m_objects.beziers);
+
+	int err = fclose(file);
+	if (err != 0)
+		Fatal("Failed to close file \"%s\" - %s", filename.c_str(), strerror(err));
+
+	Debug("Successfully saved %u objects to \"%s\"", ObjectCount(), filename.c_str());
+}
+
 void Document::Load(const string & filename)
 {
 	m_objects.bounds.clear();
 	m_count = 0;
 	if (filename == "")
+	{
+		Debug("Loaded empty document.");
 		return;
+	}
+	Debug("Loading document from file \"%s\"", filename.c_str());
+	FILE * file = fopen(filename.c_str(), "r");
+	if (file == NULL)
+		Fatal("Couldn't open file \"%s\"", filename.c_str(), strerror(errno));
+
+	size_t read;
+
+	DocChunkTypes chunk_type;
+	uint32_t chunk_size;
+	while (ReadChunkHeader(file, chunk_type, chunk_size))
+	{
+		switch(chunk_type)
+		{
+		case CT_NUMOBJS:
+			read = fread(&m_count, sizeof(m_count), 1, file);
+			if (read != 1)
+				Fatal("Failed to read number of objects!");
+			Debug("Number of objects: %u", ObjectCount());
+			break;
+		case CT_OBJTYPES:
+			Debug("Object types...");
+			LoadStructVector<ObjectType>(file, chunk_size/sizeof(ObjectType), m_objects.types);
+			break;
+		case CT_OBJBOUNDS:
+			Debug("Object bounds...");
+			LoadStructVector<Rect>(file, chunk_size/sizeof(Rect), m_objects.bounds);
+			break;
+		case CT_OBJINDICES:
+			Debug("Object data indices...");
+			LoadStructVector<unsigned>(file, chunk_size/sizeof(unsigned), m_objects.data_indices);
+			break;
+		case CT_OBJBEZIERS:
+			Debug("Bezier data...");
+			LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
+			break;
+		}
+	}
+	Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
+}
+
+void Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
+{
+	m_objects.types.push_back(type);
+	m_objects.bounds.push_back(bounds);
+	m_objects.data_indices.push_back(data_index);
+	++m_count; // Why can't we just use the size of types or something?
+}
+
+unsigned Document::AddBezierData(const Bezier & bezier)
+{
+	m_objects.beziers.push_back(bezier);
+	return m_objects.beziers.size()-1;
+}
+
+
+void Document::DebugDumpObjects()
+{
+	Debug("Objects for Document %p are:", this);
+	for (unsigned id = 0; id < ObjectCount(); ++id)
+	{
+		Debug("%u. \tType: %u\tBounds: %s", id, m_objects.types[id], m_objects.bounds[id].Str().c_str());
+	}
 }
 
-void Document::Add(Real x, Real y, Real w, Real h)
+bool Document::operator==(const Document & equ) const
 {
-	m_objects.bounds.push_back(Rect(x, y, w, h));
-	m_count++;
+	return (ObjectCount() == equ.ObjectCount() 
+		&& memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0
+		&& memcmp(m_objects.data_indices.data(), equ.m_objects.data_indices.data(), ObjectCount() * sizeof(unsigned)) == 0
+		&& memcmp(m_objects.beziers.data(), equ.m_objects.beziers.data(), m_objects.beziers.size() * sizeof(Bezier)) == 0);
 }