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Added directory checking and creation functions to Util library

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This commit is contained in:
Thulinma 2017-06-23 15:05:05 +02:00
parent 3c68d537f6
commit 5a4cb100fa
2 changed files with 346 additions and 246 deletions
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131
lib/util.h
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@ -1,25 +1,29 @@
#include <string>
#include <deque>
#include <map>
#include <stdint.h>
#include <string>
namespace Util {
bool stringScan(const std::string & src, const std::string & pattern, std::deque<std::string> & result);
uint64_t ftell(FILE * stream);
uint64_t fseek(FILE * stream, uint64_t offset, int whence);
///Holds type, size and offset for RelAccX class internal data fields.
namespace Util{
bool isDirectory(const std::string &path);
bool createPathFor(const std::string &file);
bool createPath(const std::string &path);
bool stringScan(const std::string &src, const std::string &pattern,
std::deque<std::string> &result);
uint64_t ftell(FILE *stream);
uint64_t fseek(FILE *stream, uint64_t offset, int whence);
/// Holds type, size and offset for RelAccX class internal data fields.
class RelAccXFieldData{
public:
uint8_t type;
uint32_t size;
uint32_t offset;
RelAccXFieldData(){}
RelAccXFieldData(uint8_t t, uint32_t s, uint32_t o){
type = t;
size = s;
offset = o;
}
public:
uint8_t type;
uint32_t size;
uint32_t offset;
RelAccXFieldData(){}
RelAccXFieldData(uint8_t t, uint32_t s, uint32_t o){
type = t;
size = s;
offset = o;
}
};
#define RAX_NESTED 0x01
@ -37,10 +41,14 @@ namespace Util {
#define RAX_128STRING 0x33
#define RAX_256STRING 0x34
#define RAX_RAW 0x40
#define RAX_256RAW 0x44
#define RAX_512RAW 0x45
/// Reliable Access class.
/// Provides reliable access to memory data structures, using dynamic static offsets and a status field.
/// All internal fields are host byte order (since no out-of-machine accesses happen), except 24 bit fields, which are network byte order.
/// Provides reliable access to memory data structures, using dynamic static offsets and a status
/// field.
/// All internal fields are host byte order (since no out-of-machine accesses happen), except 24
/// bit fields, which are network byte order.
/// Data structure:
/// 1 byte status bit fields (1 = ready, 2 = exit, 4 = reload)
/// 1 byte field_offset (where the field description starts)
@ -53,7 +61,8 @@ namespace Util {
/// @field_offset: offset-field_offset bytes fields:
/// 5 bits field name len (< 32), 3 bits type len (1-5)
/// len bytes field name string (< 32 bytes)
/// 1 byte field type (0x01 = RelAccX, 0x1X = uint, 0x2X = int, 0x3X = string, 0x4X = binary)
/// 1 byte field type (0x01 = RelAccX, 0x1X = uint, 0x2X = int, 0x3X = string, 0x4X =
/// binary)
/// if type-len > 1: rest-of-type-len bytes max len
/// else, for 0xYX:
/// Y=1/2: X+1 bytes maxlen (1-16b)
@ -63,46 +72,50 @@ namespace Util {
/// 0x1X/2X: X+1 bytes (u)int data
/// 0x3X: max maxlen bytes string data, zero term'd
/// 0x4X: maxlen bytes binary data
/// Setting ready means the record size, offset and fields will no longer change. Count may still go up (not down)
/// Setting ready means the record size, offset and fields will no longer change. Count may still
/// go up (not down)
/// Setting exit means the writer has exited, and readers should exit too.
/// Setting reload means the writer needed to change fields, and the pointer should be closed and re-opened through outside means (e.g. closing and re-opening the containing shm page).
/// Setting reload means the writer needed to change fields, and the pointer should be closed and
/// re-opened through outside means (e.g. closing and re-opening the containing shm page).
class RelAccX{
public:
RelAccX(char * data, bool waitReady = true);
//Read-only functions:
uint32_t getRCount() const;
uint32_t getRSize() const;
uint16_t getOffset() const;
uint32_t getStartPos() const;
uint64_t getDeleted() const;
uint32_t getPresent() const;
bool isReady() const;
bool isExit() const;
bool isReload() const;
bool isRecordAvailable(uint64_t recordNo) const;
uint32_t getRecordPosition(uint64_t recordNo) const;
uint32_t getSize(const std::string & name, uint64_t recordNo=0) const;
char * getPointer(const std::string & name, uint64_t recordNo=0) const;
uint64_t getInt(const std::string & name, uint64_t recordNo=0) const;
std::string toPrettyString() const;
//Read-write functions:
void addField(const std::string & name, uint8_t fType, uint32_t fLen=0);
void setRCount(uint32_t count);
void setStartPos(uint32_t n);
void setDeleted(uint64_t n);
void setPresent(uint32_t n);
void setReady();
void setExit();
void setReload();
void setString(const std::string & name, const std::string & val, uint64_t recordNo=0);
void setInt(const std::string & name, uint64_t val, uint64_t recordNo=0);
void deleteRecords(uint32_t amount);
void addRecords(uint32_t amount);
protected:
static uint32_t getDefaultSize(uint8_t fType);
private:
char * p;
std::map<std::string, RelAccXFieldData> fields;
};
public:
RelAccX(char *data, bool waitReady = true);
// Read-only functions:
uint32_t getRCount() const;
uint32_t getRSize() const;
uint16_t getOffset() const;
uint32_t getStartPos() const;
uint64_t getDeleted() const;
uint32_t getPresent() const;
bool isReady() const;
bool isExit() const;
bool isReload() const;
bool isRecordAvailable(uint64_t recordNo) const;
uint32_t getRecordPosition(uint64_t recordNo) const;
uint32_t getSize(const std::string &name, uint64_t recordNo = 0) const;
char *getPointer(const std::string &name, uint64_t recordNo = 0) const;
uint64_t getInt(const std::string &name, uint64_t recordNo = 0) const;
std::string toPrettyString() const;
// Read-write functions:
void addField(const std::string &name, uint8_t fType, uint32_t fLen = 0);
void setRCount(uint32_t count);
void setStartPos(uint32_t n);
void setDeleted(uint64_t n);
void setPresent(uint32_t n);
void setReady();
void setExit();
void setReload();
void setString(const std::string &name, const std::string &val, uint64_t recordNo = 0);
void setInt(const std::string &name, uint64_t val, uint64_t recordNo = 0);
void deleteRecords(uint32_t amount);
void addRecords(uint32_t amount);
protected:
static uint32_t getDefaultSize(uint8_t fType);
private:
char *p;
std::map<std::string, RelAccXFieldData> fields;
};
}