darwin: implement vlc_strerror and vlc_strerror_c

strerror_l will not be available on Darwin anytime soon

src/Makefile.am

@@ -252,6 +252,7 @@ SOURCES_libvlc_darwin = \
 	posix/timer.c \
 	darwin/specific.c \
 	posix/rand.c \
+	darwin/error.c \
 	darwin/netconf.c \
 	$(NULL)
 

src/darwin/error.c

+/*****************************************************************************
+ * error.c: Darwin error messages handling
+ *****************************************************************************
+ * Copyright © 2006-2013 Rémi Denis-Courmont
+ *           © 2013 Felix Paul Kühne
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <errno.h>
+
+#include <vlc_common.h>
+
+typedef struct
+{
+    int code;
+    const char *msg;
+} darwinerrmsg_t;
+
+static const darwinerrmsg_t darwinerrmsg[] =
+{
+    { EPERM, "Operation not permitted" },
+    { ENOENT, "No such file or directory" },
+    { ESRCH, "No such process" },
+    { EINTR, "Interrupted system call" },
+    { EIO, "Input/output error" },
+    { ENXIO, "Device not configured" },
+    { E2BIG, "Argument list too long" },
+    { ENOEXEC, "Exec format error" },
+    { EBADF, "Bad file descriptor" },
+    { ECHILD, "No child processes" },
+    { EDEADLK, "Resource deadlock avoided" },
+    { ENOMEM, "Cannot allocate memory" },
+    { EACCES, "Permission denied" },
+    { EFAULT, "Bad address" },
+    { ENOTBLK, "Block device required" },
+    { EBUSY, "Device / Resource busy" },
+    { EEXIST, "File exists" },
+    { EXDEV, "Cross-device link" },
+    { ENODEV, "Operation not supported by device" },
+    { ENOTDIR, "Not a directory" },
+    { EISDIR, "Is a directory" },
+    { EINVAL, "Invalid argument" },
+    { ENFILE, "Too many open files in system" },
+    { EMFILE, "Too many open files" },
+    { ENOTTY, "Inappropriate ioctl for device" },
+    { ETXTBSY, "Text file busy" },
+    { EFBIG, "File too large" },
+    { ENOSPC, "No space left on device" },
+    { ESPIPE, "Illegal seek" },
+    { EROFS, "Read-only file system" },
+    { EMLINK, "Too many links" },
+    { EPIPE, "Broken pipe" },
+    { EDOM, "Numerical argument out of domain" },
+    { ERANGE, "Result too large" },
+    { EAGAIN, "Resource temporarily unavailable" },
+    { EWOULDBLOCK, "Operation would block" },
+    { EINPROGRESS, "Operation now in progress" },
+    { EALREADY, "Operation already in progress" },
+    { ENOTSOCK, "Socket operation on non-socket" },
+    { EDESTADDRREQ, "Destination address required" },
+    { EMSGSIZE, "Message too long" },
+    { EPROTOTYPE, "Protocol wrong type for socket" },
+    { ENOPROTOOPT, "Protocol not available" },
+    { EPROTONOSUPPORT, "Protocol not supported" },
+    { ESOCKTNOSUPPORT, "Socket type not supported" },
+    { ENOTSUP, "Operation not supported" },
+    { EOPNOTSUPP, "Operation not supported on socket" },
+    { EPFNOSUPPORT, "Protocol family not supported" },
+    { EAFNOSUPPORT, "Address family not supported by protocol family" },
+    { EADDRINUSE, "Address already in use" },
+    { EADDRNOTAVAIL, "Can't assign requested address" },
+    { ENETDOWN, "Network is down" },
+    { ENETUNREACH, "Network is unreachable" },
+    { ENETRESET, "Network dropped connection on reset" },
+    { ECONNABORTED, "Software caused connection abort" },
+    { ECONNRESET, "Connection reset by peer" },
+    { ENOBUFS, "No buffer space available" },
+    { EISCONN, "Socket is already connected" },
+    { ENOTCONN, "Socket is not connected" },
+    { ESHUTDOWN, "Can't send after socket shutdown" },
+    { ETOOMANYREFS, "Too many references: can't splice" },
+    { ETIMEDOUT, "Operation timed out" },
+    { ECONNREFUSED, "Connection refused" },
+    { ELOOP, "Too many levels of symbolic links" },
+    { ENAMETOOLONG, "File name too long" },
+    { EHOSTDOWN, "Host is down" },
+    { EHOSTUNREACH, "No route to host" },
+    { ENOTEMPTY, "Directory not empty" },
+    { EPROCLIM, "Too many processes" },
+    { EUSERS, "Too many users" },
+    { EDQUOT, "Disc quota exceeded" },
+    { ESTALE, "Stale NFS file handle" },
+    { EREMOTE, "Too many levels of remote in path" },
+    { EBADRPC, "RPC struct is bad" },
+    { ERPCMISMATCH, "RPC version wrong" },
+    { EPROGUNAVAIL, "RPC prog. not avail" },
+    { EPROGMISMATCH, "Program version wrong" },
+    { EPROCUNAVAIL, "Bad procedure for program" },
+    { ENOLCK, "No locks available" },
+    { ENOSYS, "Function not implemented" },
+    { EFTYPE, "Inappropriate file type or format" },
+    { EAUTH, "Authentication error" },
+    { ENEEDAUTH, "Need authenticator" },
+    { EPWROFF, "Device power is off" },
+    { EDEVERR, "Device error, e.g. paper out" },
+    { EOVERFLOW, "Value too large to be stored in data type" },
+    { EBADEXEC, "Bad executable" },
+    { EBADARCH, "Bad CPU type in executable" },
+    { ESHLIBVERS, "Shared library version mismatch" },
+    { EBADMACHO, "Malformed Macho file" },
+    { ECANCELED, "Operation canceled" },
+    { EIDRM, "Identifier removed" },
+    { ENOMSG, "No message of desired type" },
+    { EILSEQ, "Illegal byte sequence" },
+    { ENOATTR, "Attribute not found" },
+    { EBADMSG, "Bad message" },
+    { EMULTIHOP, "Reserved" },
+    { ENODATA, "No message available on STREAM" },
+    { ENOLINK, "Reserved" },
+    { ENOSR, "No STREAM resources" },
+    { ENOSTR, "Not a STREAM" },
+    { EPROTO, "Protocol error" },
+    { ETIME, "STREAM ioctl timeout" },
+    { ENOPOLICY, "No such policy registered" },
+    { ENOTRECOVERABLE, "State not recoverable" },
+    { EOWNERDEAD, "Previous owner died" },
+    { EQFULL, "Interface output queue is full" },
+    { 0, NULL }
+};
+
+const char *vlc_strerror_c(int errnum)
+{
+    /* C run-time errors */
+    if ((unsigned)errnum < (unsigned)sys_nerr)
+        return sys_errlist[errnum];
+
+    /* Darwin socket errors */
+    for (const darwinerrmsg_t *e = darwinerrmsg; e->msg != NULL; e++)
+        if (e->code == errnum)
+            return e->msg;
+
+    return "Unknown error";
+}
+
+const char *vlc_strerror(int errnum)
+{
+    return /*vlc_gettext*/(vlc_strerror_c(errnum));
+}