forked from mirrors/linux
d1214c65c0
string_get_size() was documented to return an error, but in fact always returned 0. Since the output always fits in 9 bytes, just document that and let callers do what they do now: pass a small stack buffer and ignore the return value. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
#ifndef _LINUX_STRING_HELPERS_H_
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#define _LINUX_STRING_HELPERS_H_
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#include <linux/types.h>
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/* Descriptions of the types of units to
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* print in */
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enum string_size_units {
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STRING_UNITS_10, /* use powers of 10^3 (standard SI) */
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STRING_UNITS_2, /* use binary powers of 2^10 */
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};
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void string_get_size(u64 size, enum string_size_units units,
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char *buf, int len);
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#define UNESCAPE_SPACE 0x01
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#define UNESCAPE_OCTAL 0x02
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#define UNESCAPE_HEX 0x04
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#define UNESCAPE_SPECIAL 0x08
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#define UNESCAPE_ANY \
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(UNESCAPE_SPACE | UNESCAPE_OCTAL | UNESCAPE_HEX | UNESCAPE_SPECIAL)
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int string_unescape(char *src, char *dst, size_t size, unsigned int flags);
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static inline int string_unescape_inplace(char *buf, unsigned int flags)
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{
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return string_unescape(buf, buf, 0, flags);
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}
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static inline int string_unescape_any(char *src, char *dst, size_t size)
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{
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return string_unescape(src, dst, size, UNESCAPE_ANY);
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}
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static inline int string_unescape_any_inplace(char *buf)
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{
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return string_unescape_any(buf, buf, 0);
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}
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#define ESCAPE_SPACE 0x01
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#define ESCAPE_SPECIAL 0x02
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#define ESCAPE_NULL 0x04
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#define ESCAPE_OCTAL 0x08
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#define ESCAPE_ANY \
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(ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_SPECIAL | ESCAPE_NULL)
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#define ESCAPE_NP 0x10
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#define ESCAPE_ANY_NP (ESCAPE_ANY | ESCAPE_NP)
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#define ESCAPE_HEX 0x20
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int string_escape_mem(const char *src, size_t isz, char **dst, size_t osz,
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unsigned int flags, const char *esc);
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static inline int string_escape_mem_any_np(const char *src, size_t isz,
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char **dst, size_t osz, const char *esc)
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{
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return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, esc);
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}
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static inline int string_escape_str(const char *src, char **dst, size_t sz,
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unsigned int flags, const char *esc)
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{
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return string_escape_mem(src, strlen(src), dst, sz, flags, esc);
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}
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static inline int string_escape_str_any_np(const char *src, char **dst,
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size_t sz, const char *esc)
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{
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return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, esc);
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}
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#endif
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