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Start implementing LoadPersistent.

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Switch to using fstream instead of stdio.

Change-Id: I600a8748a0b3dcf24740d63cc296df000abc388d
This commit is contained in:
Peter Johnson
2015-06-27 09:56:43 -07:00
parent 69e91244f4
commit 05e084364a
2 changed files with 163 additions and 126 deletions
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166
include/ntcore.h
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@@ -19,20 +19,20 @@ extern "C" {
/** NetworkTables data types. */
enum NT_Type {
NT_UNASSIGNED = 0,
NT_BOOLEAN = 0x01,
NT_DOUBLE = 0x02,
NT_STRING = 0x04,
NT_RAW = 0x08,
NT_BOOLEAN_ARRAY = 0x10,
NT_DOUBLE_ARRAY = 0x20,
NT_STRING_ARRAY = 0x40,
NT_RPC = 0x80
NT_UNASSIGNED = 0,
NT_BOOLEAN = 0x01,
NT_DOUBLE = 0x02,
NT_STRING = 0x04,
NT_RAW = 0x08,
NT_BOOLEAN_ARRAY = 0x10,
NT_DOUBLE_ARRAY = 0x20,
NT_STRING_ARRAY = 0x40,
NT_RPC = 0x80
};
/** NetworkTables entry flags. */
enum NT_EntryFlags {
NT_PERSISTENT = 0x01
NT_PERSISTENT = 0x01
};
/*
@@ -41,87 +41,87 @@ enum NT_EntryFlags {
/** A NetworkTables string. */
struct NT_String {
/** String contents (UTF-8).
* The string is NOT required to be zero-terminated.
* When returned by the library, this is zero-terminated and allocated with
* malloc().
*/
char *str;
/** String contents (UTF-8).
* The string is NOT required to be zero-terminated.
* When returned by the library, this is zero-terminated and allocated with
* malloc().
*/
char *str;
/** Length of the string in bytes. If the string happens to be zero
* terminated, this does not include the zero-termination.
*/
size_t len;
/** Length of the string in bytes. If the string happens to be zero
* terminated, this does not include the zero-termination.
*/
size_t len;
};
/** NetworkTables Entry Value. Note this is a typed union. */
struct NT_Value {
enum NT_Type type;
unsigned long long last_change;
union {
int v_boolean;
double v_double;
struct NT_String v_string;
struct NT_String v_raw;
struct {
int *arr;
size_t size;
} arr_boolean;
struct {
double *arr;
size_t size;
} arr_double;
struct {
struct NT_String *arr;
size_t size;
} arr_string;
} data;
enum NT_Type type;
unsigned long long last_change;
union {
int v_boolean;
double v_double;
struct NT_String v_string;
struct NT_String v_raw;
struct {
int *arr;
size_t size;
} arr_boolean;
struct {
double *arr;
size_t size;
} arr_double;
struct {
struct NT_String *arr;
size_t size;
} arr_string;
} data;
};
/** NetworkTables Entry Information */
struct NT_EntryInfo {
/** Entry name */
struct NT_String name;
/** Entry name */
struct NT_String name;
/** Entry type */
enum NT_Type type;
/** Entry type */
enum NT_Type type;
/** Entry flags */
unsigned int flags;
/** Entry flags */
unsigned int flags;
/** Timestamp of last change to entry (type or value). */
unsigned long long last_change;
/** Timestamp of last change to entry (type or value). */
unsigned long long last_change;
};
/** NetworkTables Connection Information */
struct NT_ConnectionInfo {
struct NT_String remote_id;
const char *remote_name;
unsigned int remote_port;
unsigned long long last_update;
unsigned int protocol_version;
struct NT_String remote_id;
const char *remote_name;
unsigned int remote_port;
unsigned long long last_update;
unsigned int protocol_version;
};
/** NetworkTables RPC Parameter Definition */
struct NT_RpcParamDef {
struct NT_String name;
struct NT_Value def_value;
struct NT_String name;
struct NT_Value def_value;
};
/** NetworkTables RPC Result Definition */
struct NT_RpcResultDef {
struct NT_String name;
enum NT_Type type;
struct NT_String name;
enum NT_Type type;
};
/** NetworkTables RPC Definition */
struct NT_RpcDefinition {
unsigned int version;
struct NT_String name;
size_t num_params;
NT_RpcParamDef *params;
size_t num_results;
NT_RpcResultDef *results;
unsigned int version;
struct NT_String name;
size_t num_params;
NT_RpcParamDef *params;
size_t num_results;
NT_RpcResultDef *results;
};
/*
@@ -141,7 +141,7 @@ struct NT_RpcDefinition {
* purpose).
*/
void NT_GetEntryValue(const char *name, size_t name_len,
struct NT_Value *value);
struct NT_Value *value);
/** Set Entry Value.
* Sets new entry value. If type of new value differs from the type of the
@@ -153,7 +153,7 @@ void NT_GetEntryValue(const char *name, size_t name_len,
* @return 0 on error (type mismatch), 1 on success
*/
int NT_SetEntryValue(const char *name, size_t name_len,
const struct NT_Value *value);
const struct NT_Value *value);
/** Set Entry Type and Value.
* Sets new entry value. If type of new value differs from the type of the
@@ -168,7 +168,7 @@ int NT_SetEntryValue(const char *name, size_t name_len,
* @param value new entry value
*/
void NT_SetEntryTypeValue(const char *name, size_t name_len,
const struct NT_Value *value);
const struct NT_Value *value);
/** Set Entry Flags.
*/
@@ -218,7 +218,7 @@ void NT_DeleteAllEntries(void);
* @return Array of entry information.
*/
struct NT_EntryInfo *NT_GetEntryInfo(const char *prefix, size_t prefix_len,
unsigned int types, size_t *count);
unsigned int types, size_t *count);
/** Flush Entries.
* Forces an immediate flush of all local entry changes to network.
@@ -235,33 +235,36 @@ void NT_Flush(void);
* Callback Creation Functions
*/
typedef void (*NT_EntryListenerCallback) (unsigned int uid, void *data,
const char *name, size_t name_len, struct NT_Value *value);
typedef void (*NT_EntryListenerCallback)(
unsigned int uid, void *data, const char *name, size_t name_len,
struct NT_Value *value);
typedef void (*NT_ConnectionListenerCallback) (unsigned int uid, void *data,
int connected, const struct NT_ConnectionInfo *conn);
typedef void (*NT_ConnectionListenerCallback)(
unsigned int uid, void *data, int connected,
const struct NT_ConnectionInfo *conn);
unsigned int NT_AddEntryListener(const char *prefix, size_t prefix_len,
void *data, NT_EntryListenerCallback callback);
void *data, NT_EntryListenerCallback callback);
void NT_RemoveEntryListener(unsigned int entry_listener_uid);
unsigned int NT_AddConnectionListener(void *data,
NT_ConnectionListenerCallback callback);
NT_ConnectionListenerCallback callback);
void NT_RemoveConnectionListener(unsigned int conn_listener_uid);
/*
* Remote Procedure Call Functions
*/
typedef NT_Value * (*NT_RpcCallback) (unsigned int uid, void *data,
const char *name, size_t name_len,
NT_Value *params, size_t params_len,
size_t *results_len);
typedef NT_Value *(*NT_RpcCallback)(unsigned int uid, void *data,
const char *name, size_t name_len,
NT_Value *params, size_t params_len,
size_t *results_len);
unsigned int NT_CreateRpc(const char *name, size_t name_len,
const NT_RpcDefinition *def, void *data, NT_RpcCallback callback);
const NT_RpcDefinition *def, void *data,
NT_RpcCallback callback);
void NT_DeleteRpc(unsigned int rpc_uid);
unsigned int NT_CallRpc(const char *name, size_t name_len,
const NT_Value *params, size_t params_len);
const NT_Value *params, size_t params_len);
NT_Value *NT_GetRpcResult(unsigned int result_uid, size_t *results_len);
/*
@@ -269,7 +272,7 @@ NT_Value *NT_GetRpcResult(unsigned int result_uid, size_t *results_len);
*/
void NT_SetNetworkIdentity(const char *name, size_t name_len);
void NT_StartServer(const char *persist_filename, const char *listen_address,
unsigned int port);
unsigned int port);
void NT_StopServer(void);
void NT_StartClient(const char *server_name, unsigned int port);
void NT_StopClient(void);
@@ -281,7 +284,8 @@ struct NT_ConnectionInfo *NT_GetConnections(size_t *count);
*/
/* return error string, or NULL if successful */
const char *NT_SavePersistent(const char *filename);
const char *NT_LoadPersistent(const char *filename);
const char *NT_LoadPersistent(const char *filename,
void (*warn)(size_t line, const char *msg));
/*
* Utility Functions