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 */ 8 enum 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 13 void 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 23 int string_unescape(char *src, char *dst, size_t size, unsigned int flags); 24 25 static inline int string_unescape_inplace(char *buf, unsigned int flags) 26 { 27 return string_unescape(buf, buf, 0, flags); 28 } 29 30 static inline int string_unescape_any(char *src, char *dst, size_t size) 31 { 32 return string_unescape(src, dst, size, UNESCAPE_ANY); 33 } 34 35 static 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 50 int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz, 51 unsigned int flags, const char *only); 52 53 static inline int string_escape_mem_any_np(const char *src, size_t isz, 54 char *dst, size_t osz, const char *only) 55 { 56 return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, only); 57 } 58 59 static inline int string_escape_str(const char *src, char *dst, size_t sz, 60 unsigned int flags, const char *only) 61 { 62 return string_escape_mem(src, strlen(src), dst, sz, flags, only); 63 } 64 65 static inline int string_escape_str_any_np(const char *src, char *dst, 66 size_t sz, const char *only) 67 { 68 return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only); 69 } 70 71 #endif 72