1#ifndef _LINUX_STRING_HELPERS_H_ 2#define _LINUX_STRING_HELPERS_H_ 3 4#include <linux/types.h> 5 6/* Descriptions of the types of units to 7 * print in */ 8enum string_size_units { 9 STRING_UNITS_10, /* use powers of 10^3 (standard SI) */ 10 STRING_UNITS_2, /* use binary powers of 2^10 */ 11}; 12 13void string_get_size(u64 size, u64 blk_size, enum string_size_units units, 14 char *buf, int len); 15 16#define UNESCAPE_SPACE 0x01 17#define UNESCAPE_OCTAL 0x02 18#define UNESCAPE_HEX 0x04 19#define UNESCAPE_SPECIAL 0x08 20#define UNESCAPE_ANY \ 21 (UNESCAPE_SPACE | UNESCAPE_OCTAL | UNESCAPE_HEX | UNESCAPE_SPECIAL) 22 23int string_unescape(char *src, char *dst, size_t size, unsigned int flags); 24 25static inline int string_unescape_inplace(char *buf, unsigned int flags) 26{ 27 return string_unescape(buf, buf, 0, flags); 28} 29 30static inline int string_unescape_any(char *src, char *dst, size_t size) 31{ 32 return string_unescape(src, dst, size, UNESCAPE_ANY); 33} 34 35static inline int string_unescape_any_inplace(char *buf) 36{ 37 return string_unescape_any(buf, buf, 0); 38} 39 40#define ESCAPE_SPACE 0x01 41#define ESCAPE_SPECIAL 0x02 42#define ESCAPE_NULL 0x04 43#define ESCAPE_OCTAL 0x08 44#define ESCAPE_ANY \ 45 (ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_SPECIAL | ESCAPE_NULL) 46#define ESCAPE_NP 0x10 47#define ESCAPE_ANY_NP (ESCAPE_ANY | ESCAPE_NP) 48#define ESCAPE_HEX 0x20 49 50int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz, 51 unsigned int flags, const char *esc); 52 53static inline int string_escape_mem_any_np(const char *src, size_t isz, 54 char *dst, size_t osz, const char *esc) 55{ 56 return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, esc); 57} 58 59static inline int string_escape_str(const char *src, char *dst, size_t sz, 60 unsigned int flags, const char *esc) 61{ 62 return string_escape_mem(src, strlen(src), dst, sz, flags, esc); 63} 64 65static inline int string_escape_str_any_np(const char *src, char *dst, 66 size_t sz, const char *esc) 67{ 68 return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, esc); 69} 70 71#endif 72