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libc: Add strchrnul()

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Another GNU extension, it's ok.
This commit is contained in:
apio 2022-10-22 18:37:02 +02:00
parent bfbe8e847b
commit 8908faf6e2
2 changed files with 10 additions and 0 deletions
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4
libs/libc/include/string.h
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@ -49,6 +49,10 @@ extern "C"
/* Returns a pointer to the last occurrence of the character c in str, or NULL if it is not found. */ /* Returns a pointer to the last occurrence of the character c in str, or NULL if it is not found. */
char* strrchr(const char* str, int c); char* strrchr(const char* str, int c);
/* Returns a pointer to the first occurrence of the character c in str, or a pointer to the terminating null byte of
* str if it is not found. */
char* strchrnul(const char* str, int c);
/* Concatenates at most max bytes of the string src into dest. */ /* Concatenates at most max bytes of the string src into dest. */
char* strncat(char* dest, const char* src, size_t max); char* strncat(char* dest, const char* src, size_t max);

6
libs/libc/src/string.cpp
View File

@ -208,6 +208,12 @@ extern "C"
return NULL; return NULL;
} }
char* strchrnul(const char* str, int c)
{
while (*str && *str != (char)c) str++;
return const_cast<char*>(str);
}
char* strrchr(const char* str, int c) char* strrchr(const char* str, int c)
{ {
const char* s = str + strlen(str); const char* s = str + strlen(str);