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#ifndef UTIL_LINUX_STRUTILS
#define UTIL_LINUX_STRUTILS
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include <sys/types.h>
#include <ctype.h>
/* default strtoxx_or_err() exit code */
#ifndef STRTOXX_EXIT_CODE
# define STRTOXX_EXIT_CODE EXIT_FAILURE
#endif
extern int parse_size(const char *str, uintmax_t *res, int *power);
extern int strtosize(const char *str, uintmax_t *res);
extern uintmax_t strtosize_or_err(const char *str, const char *errmesg);
extern int16_t strtos16_or_err(const char *str, const char *errmesg);
extern uint16_t strtou16_or_err(const char *str, const char *errmesg);
extern int32_t strtos32_or_err(const char *str, const char *errmesg);
extern uint32_t strtou32_or_err(const char *str, const char *errmesg);
extern int64_t strtos64_or_err(const char *str, const char *errmesg);
extern uint64_t strtou64_or_err(const char *str, const char *errmesg);
extern double strtod_or_err(const char *str, const char *errmesg);
extern long strtol_or_err(const char *str, const char *errmesg);
extern unsigned long strtoul_or_err(const char *str, const char *errmesg);
extern void strtotimeval_or_err(const char *str, struct timeval *tv,
const char *errmesg);
extern int isdigit_string(const char *str);
#ifndef HAVE_MEMPCPY
extern void *mempcpy(void *restrict dest, const void *restrict src, size_t n);
#endif
#ifndef HAVE_STRNLEN
extern size_t strnlen(const char *s, size_t maxlen);
#endif
#ifndef HAVE_STRNDUP
extern char *strndup(const char *s, size_t n);
#endif
#ifndef HAVE_STRNCHR
extern char *strnchr(const char *s, size_t maxlen, int c);
#endif
/* caller guarantees n > 0 */
static inline void xstrncpy(char *dest, const char *src, size_t n)
{
strncpy(dest, src, n-1);
dest[n-1] = 0;
}
static inline char *strdup_to_offset(void *stru, size_t offset, const char *str)
{
char *n = NULL;
char **o = (char **) ((char *) stru + offset);
if (str) {
n = strdup(str);
if (!n)
return NULL;
}
free(*o);
*o = n;
return n;
}
#define strdup_to_struct_member(_s, _m, _str) \
strdup_to_offset((void *) _s, offsetof(__typeof__(*(_s)), _m), _str)
extern void strmode(mode_t mode, char *str);
/* Options for size_to_human_string() */
enum
{
SIZE_SUFFIX_1LETTER = 0,
SIZE_SUFFIX_3LETTER = 1,
SIZE_SUFFIX_SPACE = 2
};
extern char *size_to_human_string(int options, uint64_t bytes);
extern int string_to_idarray(const char *list, int ary[], size_t arysz,
int (name2id)(const char *, size_t));
extern int string_add_to_idarray(const char *list, int ary[],
size_t arysz, int *ary_pos,
int (name2id)(const char *, size_t));
extern int string_to_bitarray(const char *list, char *ary,
int (*name2bit)(const char *, size_t));
extern int string_to_bitmask(const char *list,
unsigned long *mask,
long (*name2flag)(const char *, size_t));
extern int parse_range(const char *str, int *lower, int *upper, int def);
extern int streq_except_trailing_slash(const char *s1, const char *s2);
/*
* Match string beginning.
*/
static inline const char *startswith(const char *s, const char *prefix)
{
size_t sz = prefix ? strlen(prefix) : 0;
if (s && sz && strncmp(s, prefix, sz) == 0)
return s + sz;
return NULL;
}
/*
* Case insensitive match string beginning.
*/
static inline const char *startswith_no_case(const char *s, const char *prefix)
{
size_t sz = prefix ? strlen(prefix) : 0;
if (s && sz && strncasecmp(s, prefix, sz) == 0)
return s + sz;
return NULL;
}
/*
* Match string ending.
*/
static inline const char *endswith(const char *s, const char *postfix)
{
size_t sl = s ? strlen(s) : 0;
size_t pl = postfix ? strlen(postfix) : 0;
if (pl == 0)
return (char *)s + sl;
if (sl < pl)
return NULL;
if (memcmp(s + sl - pl, postfix, pl) != 0)
return NULL;
return (char *)s + sl - pl;
}
/*
* Skip leading white space.
*/
static inline const char *skip_space(const char *p)
{
while (isspace(*p))
++p;
return p;
}
static inline const char *skip_blank(const char *p)
{
while (isblank(*p))
++p;
return p;
}
/* Removes whitespace from the right-hand side of a string (trailing
* whitespace).
*
* Returns size of the new string (without \0).
*/
static inline size_t rtrim_whitespace(unsigned char *str)
{
size_t i = strlen((char *) str);
while (i) {
i--;
if (!isspace(str[i])) {
i++;
break;
}
}
str[i] = '\0';
return i;
}
/* Removes whitespace from the left-hand side of a string.
*
* Returns size of the new string (without \0).
*/
static inline size_t ltrim_whitespace(unsigned char *str)
{
size_t len;
unsigned char *p;
for (p = str; p && isspace(*p); p++);
len = strlen((char *) p);
if (len && p > str)
memmove(str, p, len + 1);
return len;
}
#endif
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