Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Arnaldo Carvalho de Melo | 256 | 40.31% | 5 | 50.00% |
Jiri Olsa | 222 | 34.96% | 1 | 10.00% |
Josh Poimboeuf | 70 | 11.02% | 1 | 10.00% |
Wang Nan | 60 | 9.45% | 1 | 10.00% |
Vitaly Chikunov | 26 | 4.09% | 1 | 10.00% |
Greg Kroah-Hartman | 1 | 0.16% | 1 | 10.00% |
Total | 635 | 10 |
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// SPDX-License-Identifier: GPL-2.0 /* * linux/tools/lib/string.c * * Copied from linux/lib/string.c, where it is: * * Copyright (C) 1991, 1992 Linus Torvalds * * More specifically, the first copied function was strtobool, which * was introduced by: * * d0f1fed29e6e ("Add a strtobool function matching semantics of existing in kernel equivalents") * Author: Jonathan Cameron <jic23@cam.ac.uk> */ #include <stdlib.h> #include <string.h> #include <errno.h> #include <linux/string.h> #include <linux/ctype.h> #include <linux/compiler.h> /** * memdup - duplicate region of memory * * @src: memory region to duplicate * @len: memory region length */ void *memdup(const void *src, size_t len) { void *p = malloc(len); if (p) memcpy(p, src, len); return p; } /** * strtobool - convert common user inputs into boolean values * @s: input string * @res: result * * This routine returns 0 iff the first character is one of 'Yy1Nn0', or * [oO][NnFf] for "on" and "off". Otherwise it will return -EINVAL. Value * pointed to by res is updated upon finding a match. */ int strtobool(const char *s, bool *res) { if (!s) return -EINVAL; switch (s[0]) { case 'y': case 'Y': case '1': *res = true; return 0; case 'n': case 'N': case '0': *res = false; return 0; case 'o': case 'O': switch (s[1]) { case 'n': case 'N': *res = true; return 0; case 'f': case 'F': *res = false; return 0; default: break; } default: break; } return -EINVAL; } /** * strlcpy - Copy a C-string into a sized buffer * @dest: Where to copy the string to * @src: Where to copy the string from * @size: size of destination buffer * * Compatible with *BSD: the result is always a valid * NUL-terminated string that fits in the buffer (unless, * of course, the buffer size is zero). It does not pad * out the result like strncpy() does. * * If libc has strlcpy() then that version will override this * implementation: */ #ifdef __clang__ #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wignored-attributes" #endif size_t __weak strlcpy(char *dest, const char *src, size_t size) { size_t ret = strlen(src); if (size) { size_t len = (ret >= size) ? size - 1 : ret; memcpy(dest, src, len); dest[len] = '\0'; } return ret; } #ifdef __clang__ #pragma clang diagnostic pop #endif /** * skip_spaces - Removes leading whitespace from @str. * @str: The string to be stripped. * * Returns a pointer to the first non-whitespace character in @str. */ char *skip_spaces(const char *str) { while (isspace(*str)) ++str; return (char *)str; } /** * strim - Removes leading and trailing whitespace from @s. * @s: The string to be stripped. * * Note that the first trailing whitespace is replaced with a %NUL-terminator * in the given string @s. Returns a pointer to the first non-whitespace * character in @s. */ char *strim(char *s) { size_t size; char *end; size = strlen(s); if (!size) return s; end = s + size - 1; while (end >= s && isspace(*end)) end--; *(end + 1) = '\0'; return skip_spaces(s); } /** * strreplace - Replace all occurrences of character in string. * @s: The string to operate on. * @old: The character being replaced. * @new: The character @old is replaced with. * * Returns pointer to the nul byte at the end of @s. */ char *strreplace(char *s, char old, char new) { for (; *s; ++s) if (*s == old) *s = new; return s; } static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes) { while (bytes) { if (*start != value) return (void *)start; start++; bytes--; } return NULL; } /** * memchr_inv - Find an unmatching character in an area of memory. * @start: The memory area * @c: Find a character other than c * @bytes: The size of the area. * * returns the address of the first character other than @c, or %NULL * if the whole buffer contains just @c. */ void *memchr_inv(const void *start, int c, size_t bytes) { u8 value = c; u64 value64; unsigned int words, prefix; if (bytes <= 16) return check_bytes8(start, value, bytes); value64 = value; value64 |= value64 << 8; value64 |= value64 << 16; value64 |= value64 << 32; prefix = (unsigned long)start % 8; if (prefix) { u8 *r; prefix = 8 - prefix; r = check_bytes8(start, value, prefix); if (r) return r; start += prefix; bytes -= prefix; } words = bytes / 8; while (words) { if (*(u64 *)start != value64) return check_bytes8(start, value, 8); start += 8; words--; } return check_bytes8(start, value, bytes % 8); }
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