341 lines
10 KiB
C++
341 lines
10 KiB
C++
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
int errno = 0;
|
|
|
|
int memcmp(const void* s1, const void* s2, size_t n)
|
|
{
|
|
const unsigned char* a = static_cast<const unsigned char*>(s1);
|
|
const unsigned char* b = static_cast<const unsigned char*>(s2);
|
|
|
|
for (size_t i = 0; i < n; i++)
|
|
if (a[i] != b[i])
|
|
return a[i] - b[i];
|
|
|
|
return 0;
|
|
}
|
|
|
|
void* memcpy(void* __restrict__ dstp, const void* __restrict__ srcp, size_t n)
|
|
{
|
|
unsigned char* dst = static_cast<unsigned char*>(dstp);
|
|
const unsigned char* src = static_cast<const unsigned char*>(srcp);
|
|
for (size_t i = 0; i < n; i++)
|
|
dst[i] = src[i];
|
|
return dstp;
|
|
}
|
|
|
|
void* memmove(void* destp, const void* srcp, size_t n)
|
|
{
|
|
unsigned char* dest = static_cast<unsigned char*>(destp);
|
|
const unsigned char* src = static_cast<const unsigned char*>(srcp);
|
|
|
|
if (dest < src)
|
|
{
|
|
for (size_t i = 0; i < n; i++)
|
|
dest[i] = src[i];
|
|
}
|
|
else
|
|
{
|
|
for (size_t i = 1; i <= n; i++)
|
|
dest[n - i] = src[n - i];
|
|
}
|
|
|
|
return destp;
|
|
}
|
|
|
|
void* memset(void* s, int c, size_t n)
|
|
{
|
|
unsigned char* p = static_cast<unsigned char*>(s);
|
|
for (size_t i = 0; i < n; i++)
|
|
p[i] = c;
|
|
return s;
|
|
}
|
|
|
|
int strcmp(const char* s1, const char* s2)
|
|
{
|
|
const unsigned char* u1 = (unsigned char*)s1;
|
|
const unsigned char* u2 = (unsigned char*)s2;
|
|
for (; *u1 && *u2; u1++, u2++)
|
|
if (*u1 != *u2)
|
|
break;
|
|
return *u1 - *u2;
|
|
}
|
|
|
|
char* stpcpy(char* __restrict__ dest, const char* __restrict__ src)
|
|
{
|
|
size_t i = 0;
|
|
for (; src[i]; i++)
|
|
dest[i] = src[i];
|
|
dest[i] = '\0';
|
|
return &dest[i];
|
|
}
|
|
|
|
char* strcpy(char* __restrict__ dest, const char* __restrict__ src)
|
|
{
|
|
stpcpy(dest, src);
|
|
return dest;
|
|
}
|
|
|
|
char* strcat(char* __restrict__ dest, const char* __restrict__ src)
|
|
{
|
|
strcpy(dest + strlen(src), src);
|
|
return dest;
|
|
}
|
|
|
|
char* strerror(int error)
|
|
{
|
|
static char buffer[1024];
|
|
buffer[0] = 0;
|
|
strcpy(buffer, strerrordesc_np(error));
|
|
return buffer;
|
|
}
|
|
|
|
const char* strerrorname_np(int error)
|
|
{
|
|
switch (error)
|
|
{
|
|
case 0: return "NOERROR";
|
|
case E2BIG: return "E2BIG";
|
|
case EACCES: return "EACCES";
|
|
case EADDRINUSE: return "EADDRINUSE";
|
|
case EADDRNOTAVAIL: return "EADDRNOTAVAIL";
|
|
case EAFNOSUPPORT: return "EAFNOSUPPORT";
|
|
case EAGAIN: return "EAGAIN";
|
|
case EALREADY: return "EALREADY";
|
|
case EBADF: return "EBADF";
|
|
case EBADMSG: return "EBADMSG";
|
|
case EBUSY: return "EBUSY";
|
|
case ECANCELED: return "ECANCELED";
|
|
case ECHILD: return "ECHILD";
|
|
case ECONNABORTED: return "ECONNABORTED";
|
|
case ECONNREFUSED: return "ECONNREFUSED";
|
|
case ECONNRESET: return "ECONNRESET";
|
|
case EDEADLK: return "EDEADLK";
|
|
case EDESTADDRREQ: return "EDESTADDRREQ";
|
|
case EDOM: return "EDOM";
|
|
case EDQUOT: return "EDQUOT";
|
|
case EEXIST: return "EEXIST";
|
|
case EFAULT: return "EFAULT";
|
|
case EFBIG: return "EFBIG";
|
|
case EHOSTUNREACH: return "EHOSTUNREACH";
|
|
case EIDRM: return "EIDRM";
|
|
case EILSEQ: return "EILSEQ";
|
|
case EINPROGRESS: return "EINPROGRESS";
|
|
case EINTR: return "EINTR";
|
|
case EINVAL: return "EINVAL";
|
|
case EIO: return "EIO";
|
|
case EISCONN: return "EISCONN";
|
|
case EISDIR: return "EISDIR";
|
|
case ELOOP: return "ELOOP";
|
|
case EMFILE: return "EMFILE";
|
|
case EMLINK: return "EMLINK";
|
|
case EMSGSIZE: return "EMSGSIZE";
|
|
case EMULTIHOP: return "EMULTIHOP";
|
|
case ENAMETOOLONG: return "ENAMETOOLONG";
|
|
case ENETDOWN: return "ENETDOWN";
|
|
case ENETRESET: return "ENETRESET";
|
|
case ENETUNREACH: return "ENETUNREACH";
|
|
case ENFILE: return "ENFILE";
|
|
case ENOBUFS: return "ENOBUFS";
|
|
case ENODATA: return "ENODATA";
|
|
case ENODEV: return "ENODEV";
|
|
case ENOENT: return "ENOENT";
|
|
case ENOEXEC: return "ENOEXEC";
|
|
case ENOLCK: return "ENOLCK";
|
|
case ENOLINK: return "ENOLINK";
|
|
case ENOMEM: return "ENOMEM";
|
|
case ENOMSG: return "ENOMSG";
|
|
case ENOPROTOOPT: return "ENOPROTOOPT";
|
|
case ENOSPC: return "ENOSPC";
|
|
case ENOSR: return "ENOSR";
|
|
case ENOSTR: return "ENOSTR";
|
|
case ENOSYS: return "ENOSYS";
|
|
case ENOTCONN: return "ENOTCONN";
|
|
case ENOTDIR: return "ENOTDIR";
|
|
case ENOTEMPTY: return "ENOTEMPTY";
|
|
case ENOTRECOVERABLE: return "ENOTRECOVERABLE";
|
|
case ENOTSOCK: return "ENOTSOCK";
|
|
case ENOTSUP: return "ENOTSUP";
|
|
case ENOTTY: return "ENOTTY";
|
|
case ENXIO: return "ENXIO";
|
|
case EOPNOTSUPP: return "EOPNOTSUPP";
|
|
case EOVERFLOW: return "EOVERFLOW";
|
|
case EOWNERDEAD: return "EOWNERDEAD";
|
|
case EPERM: return "EPERM";
|
|
case EPIPE: return "EPIPE";
|
|
case EPROTO: return "EPROTO";
|
|
case EPROTONOSUPPORT: return "EPROTONOSUPPORT";
|
|
case EPROTOTYPE: return "EPROTOTYPE";
|
|
case ERANGE: return "ERANGE";
|
|
case EROFS: return "EROFS";
|
|
case ESPIPE: return "ESPIPE";
|
|
case ESRCH: return "ESRCH";
|
|
case ESTALE: return "ESTALE";
|
|
case ETIME: return "ETIME";
|
|
case ETIMEDOUT: return "ETIMEDOUT";
|
|
case ETXTBSY: return "ETXTBSY";
|
|
case EWOULDBLOCK: return "EWOULDBLOCK";
|
|
case EXDEV: return "EXDEV";
|
|
case EEXISTS: return "EEXISTS";
|
|
case ENOTBLK: return "ENOTBLK";
|
|
case EUNKNOWN: return "EUNKNOWN";
|
|
}
|
|
|
|
errno = EINVAL;
|
|
return "EUNKNOWN";
|
|
}
|
|
|
|
const char* strerrordesc_np(int error)
|
|
{
|
|
switch (error)
|
|
{
|
|
case 0: return "Success";
|
|
case E2BIG: return "Argument list too long.";
|
|
case EACCES: return "Permission denied.";
|
|
case EADDRINUSE: return "Address in use.";
|
|
case EADDRNOTAVAIL: return "Address not available.";
|
|
case EAFNOSUPPORT: return "Address family not supported.";
|
|
case EAGAIN: return "Resource unavailable, try again.";
|
|
case EALREADY: return "Connection already in progress.";
|
|
case EBADF: return "Bad file descriptor.";
|
|
case EBADMSG: return "Bad message.";
|
|
case EBUSY: return "Device or resource busy.";
|
|
case ECANCELED: return "Operation canceled.";
|
|
case ECHILD: return "No child processes.";
|
|
case ECONNABORTED: return "Connection aborted.";
|
|
case ECONNREFUSED: return "Connection refused.";
|
|
case ECONNRESET: return "Connection reset.";
|
|
case EDEADLK: return "Resource deadlock would occur.";
|
|
case EDESTADDRREQ: return "Destination address required.";
|
|
case EDOM: return "Mathematics argument out of domain of function.";
|
|
case EDQUOT: return "Reserved.";
|
|
case EEXIST: return "File exists.";
|
|
case EFAULT: return "Bad address.";
|
|
case EFBIG: return "File too large.";
|
|
case EHOSTUNREACH: return "Host is unreachable.";
|
|
case EIDRM: return "Identifier removed.";
|
|
case EILSEQ: return "Illegal byte sequence.";
|
|
case EINPROGRESS: return "Operation in progress.";
|
|
case EINTR: return "Interrupted function.";
|
|
case EINVAL: return "Invalid argument.";
|
|
case EIO: return "I/O error.";
|
|
case EISCONN: return "Socket is connected.";
|
|
case EISDIR: return "Is a directory.";
|
|
case ELOOP: return "Too many levels of symbolic links.";
|
|
case EMFILE: return "File descriptor value too large.";
|
|
case EMLINK: return "Too many links.";
|
|
case EMSGSIZE: return "Message too large.";
|
|
case EMULTIHOP: return "Reserved.";
|
|
case ENAMETOOLONG: return "Filename too long.";
|
|
case ENETDOWN: return "Network is down.";
|
|
case ENETRESET: return "Connection aborted by network.";
|
|
case ENETUNREACH: return "Network unreachable.";
|
|
case ENFILE: return "Too many files open in system.";
|
|
case ENOBUFS: return "No buffer space available.";
|
|
case ENODATA: return "No message is available on the STREAM head read queue.";
|
|
case ENODEV: return "No such device.";
|
|
case ENOENT: return "No such file or directory.";
|
|
case ENOEXEC: return "Executable file format error.";
|
|
case ENOLCK: return "No locks available.";
|
|
case ENOLINK: return "Reserved.";
|
|
case ENOMEM: return "Not enough space.";
|
|
case ENOMSG: return "No message of the desired type.";
|
|
case ENOPROTOOPT: return "Protocol not available.";
|
|
case ENOSPC: return "No space left on device.";
|
|
case ENOSR: return "No STREAM resources.";
|
|
case ENOSTR: return "Not a STREAM.";
|
|
case ENOSYS: return "Functionality not supported.";
|
|
case ENOTCONN: return "The socket is not connected.";
|
|
case ENOTDIR: return "Not a directory or a symbolic link to a directory.";
|
|
case ENOTEMPTY: return "Directory not empty.";
|
|
case ENOTRECOVERABLE: return "State not recoverable.";
|
|
case ENOTSOCK: return "Not a socket.";
|
|
case ENOTSUP: return "Not supported.";
|
|
case ENOTTY: return "Inappropriate I/O control operation.";
|
|
case ENXIO: return "No such device or address.";
|
|
case EOPNOTSUPP: return "Operation not supported on socket .";
|
|
case EOVERFLOW: return "Value too large to be stored in data type.";
|
|
case EOWNERDEAD: return "Previous owner died.";
|
|
case EPERM: return "Operation not permitted.";
|
|
case EPIPE: return "Broken pipe.";
|
|
case EPROTO: return "Protocol error.";
|
|
case EPROTONOSUPPORT: return "Protocol not supported.";
|
|
case EPROTOTYPE: return "Protocol wrong type for socket.";
|
|
case ERANGE: return "Result too large.";
|
|
case EROFS: return "Read-only file system.";
|
|
case ESPIPE: return "Invalid seek.";
|
|
case ESRCH: return "No such process.";
|
|
case ESTALE: return "Reserved.";
|
|
case ETIME: return "Stream ioctl() timeout.";
|
|
case ETIMEDOUT: return "Connection timed out.";
|
|
case ETXTBSY: return "Text file busy.";
|
|
case EWOULDBLOCK: return "Operation would block.";
|
|
case EXDEV: return "Cross-device link.";
|
|
case EEXISTS: return "File exists";
|
|
case ENOTBLK: return "Block device required";
|
|
case EUNKNOWN: return "Unknown error";
|
|
}
|
|
|
|
errno = EINVAL;
|
|
return "Unknown error";
|
|
}
|
|
|
|
size_t strlen(const char* str)
|
|
{
|
|
size_t len = 0;
|
|
while (str[len])
|
|
len++;
|
|
return len;
|
|
}
|
|
|
|
int strncmp(const char* s1, const char* s2, size_t n)
|
|
{
|
|
const unsigned char* u1 = (unsigned char*)s1;
|
|
const unsigned char* u2 = (unsigned char*)s2;
|
|
for (; --n && *u1 && *u2; u1++, u2++)
|
|
if (*u1 != *u2)
|
|
break;
|
|
return *u1 - *u2;
|
|
}
|
|
|
|
char* strchr(const char* str, int c)
|
|
{
|
|
while (*str)
|
|
{
|
|
if (*str == c)
|
|
return (char*)str;
|
|
str++;
|
|
}
|
|
return (*str == c) ? (char*)str : nullptr;
|
|
}
|
|
|
|
char* strchrnul(const char* str, int c)
|
|
{
|
|
while (*str)
|
|
{
|
|
if (*str == c)
|
|
return (char*)str;
|
|
str++;
|
|
}
|
|
return (char*)str;
|
|
}
|
|
|
|
char* strncpy(char* __restrict__ dest, const char* __restrict__ src, size_t n)
|
|
{
|
|
size_t i;
|
|
for (i = 0; src[i] && i < n; i++)
|
|
dest[i] = src[i];
|
|
for (; i < n; i++)
|
|
dest[i] = '\0';
|
|
return dest;
|
|
}
|
|
|
|
char* strstr(const char* haystack, const char* needle)
|
|
{
|
|
for (size_t i = 0; haystack[i]; i++)
|
|
if (memcmp(haystack + i, needle, strlen(needle)) == 0)
|
|
return (char*)haystack + i;
|
|
return NULL;
|
|
}
|