Refactor code into a library and implement basic file management methods

1 files changed, 97 insertions, 0 deletions

diff --git a/src/cc4group.h b/src/cc4group.h
new file mode 100644
index 0000000..ef3a55d
--- /dev/null
+++ b/src/cc4group.h
@@ -0,0 +1,97 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#define this this_
+#define new new_
+#define delete delete_
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct {
+	const char* fileName;
+	int32_t modified;
+	const char* author;
+	size_t size;
+	size_t totalSize;
+	bool executable;
+	bool directory;
+	bool official;
+} CC4Group_EntryInfo;
+
+typedef struct CC4Group_t CC4Group;
+
+typedef void(*CC4Group_CleanupFunc)(void* data);
+typedef struct {
+	CC4Group_CleanupFunc func;
+	void* data;
+} CC4Group_CleanupJob;
+typedef void* (*CC4Group_TmpMemoryStrategy)(CC4Group* const this, const size_t size, CC4Group_CleanupJob* cleanupJob);
+
+typedef struct {
+	CC4Group* (*new)(void);
+	bool (*create)(CC4Group* const this);
+	void (*delete)(CC4Group* const this);
+
+	// only open an existing group on a frehsly created group object
+	bool (*openExisting)(CC4Group* const this, const char* const path);
+
+	bool (*save)(CC4Group* const this, const char* const path);
+	bool (*saveOverwrite)(CC4Group* const this, const char* const path);
+
+	// extraction to disk
+	bool (*extractAll)(CC4Group* const this, const char* const targetPath);
+	bool (*extractSingle)(CC4Group* const this, const char* const entryPath, const char* const targetPath);
+
+	// the group owns the data pointed to. the pointer is valid until the group destructor is called
+	bool (*getEntryData)(const CC4Group* const this, const char* const entryPath, const void** const data, size_t* const size);
+
+	// the returned error message pointer is valid until the next call to getErrorMessage is issued or the group is destructed
+	const char* (*getErrorMessage)(CC4Group* const this);
+
+	int32_t (*getErrorCode)(const CC4Group* const this);
+
+	const char* (*getErrorMethod)(const CC4Group* const this);
+	const char* (*getErrorCauser)(const CC4Group* const this);
+
+	struct {
+		CC4Group_TmpMemoryStrategy Memory;
+		CC4Group_TmpMemoryStrategy File;
+		CC4Group_TmpMemoryStrategy Auto;
+	} const TmpMemoryStrategies;
+
+	void (*setTmpMemoryStrategy)(const CC4Group_TmpMemoryStrategy strategy);
+
+	// group metadata handling
+	bool (*setMaker)(CC4Group* const this, const char* const maker, const char* const path, bool const recursive);
+	bool (*setCreation)(CC4Group* const this, int32_t const creation, const char* const path, bool const recursive);
+	bool (*setOfficial)(CC4Group* const this, bool const official, const char* const path, bool const recursive);
+	bool (*setExecutable)(CC4Group* const this, bool const executable, const char* const path);
+
+	bool (*getEntryInfo)(CC4Group* const this, const char* const path, CC4Group_EntryInfo* const info);
+	bool (*getEntryInfos)(CC4Group* const this, const char* const path, CC4Group_EntryInfo** const infos, size_t* const size);
+
+	// modifying the group
+	bool (*deleteEntry)(CC4Group* const this, const char* const path, bool const recursive);
+	bool (*renameEntry)(CC4Group* const this, const char* const oldPath, const char* const newPath);
+	bool (*createDirectory)(CC4Group* const this, const char* const path);
+
+	// ownership of the data is taken by the group
+	bool (*createFile)(CC4Group* const this, const char* const path, void* const data, size_t const size);
+	// ownership of the data is taken by the group
+	bool (*setEntryData)(const CC4Group* const this, const char* const entryPath, void* const data, size_t const size);
+} const CC4Group_API;
+
+#ifndef CC4GROUP_DYNAMIC_LOAD
+extern CC4Group_API cc4group;
+#endif
+
+#ifdef __cplusplus
+}
+#undef this
+#undef new
+#undef delete
+#endif