blob: f5d4914cff0c44ed7268e3c3684919b6206d6214 [file] [log] [blame]
#!/usr/bin/env bash
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# Generate Go code listing errors and other #defined constant
# values (ENAMETOOLONG etc.), by asking the preprocessor
# about the definitions.
unset LANG
export LC_ALL=C
export LC_CTYPE=C
case "$GOARCH" in
arm)
GCC=arm-gcc
;;
*)
GCC=gcc
;;
esac
uname=$(uname)
includes_Linux='
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#define _FILE_OFFSET_BITS 64
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/epoll.h>
#include <linux/ptrace.h>
#include <linux/wait.h>
'
includes_Darwin='
#define __DARWIN_UNIX03 0
#define KERNEL
#define _DARWIN_USE_64_BIT_INODE
#include <sys/wait.h>
#include <sys/event.h>
'
includes_FreeBSD='
#include <sys/wait.h>
#include <sys/event.h>
'
includes='
#include <sys/types.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <errno.h>
#include <sys/signal.h>
#include <signal.h>
'
ccflags=""
next=false
for i
do
if $next; then
ccflags="$ccflags $i"
next=false
elif [ "$i" = "-f" ]; then
next=true
fi
done
# These are go errors that will be mapped directly to windows errors
goerrors='
ENOENT:ERROR_FILE_NOT_FOUND
ENOTDIR:ERROR_DIRECTORY
'
# Pull out just the error names for later.
i=$(
for j in "$goerrors"
do
echo "$j"
done |
awk -F: '
{ if (NR > 1) printf("|") }
{ printf("%s", $1) }
'
)
errors=$(
echo '#include <errno.h>' | $GCC -x c - -E -dM $ccflags |
awk '
$1 != "#define" || $2 ~ /\(/ {next}
$2 ~ /^('$i')$/ {next}
$2 ~ /^E[A-Z0-9_]+$/ { print $2 }
{next}
' | sort
)
echo '// mkerrors_windows.sh' "$@"
echo '// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT'
echo
echo 'package syscall'
# Run C program to print error strings.
(
/bin/echo "
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#define nelem(x) (sizeof(x)/sizeof((x)[0]))
enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
struct {
char *goname;
char *winname;
} goerrors[] = {
"
for i in $goerrors
do
j=`echo $i | cut -d: -f1`
k=`echo $i | cut -d: -f2`
echo ' {"'$j'", "'$k'"},'
done
# Use /bin/echo to avoid builtin echo,
# which interprets \n itself
/bin/echo '
};
struct {
char *name;
int value;
} errors[] = {
'
for i in $errors
do
echo ' {"'$i'",' $i'},'
done
# Use /bin/echo to avoid builtin echo,
# which interprets \n itself
/bin/echo '
};
int
main(void)
{
int i, j, e, iota = 1;
char buf[1024];
printf("\n// Go names for Windows errors.\n");
printf("const (\n");
for(i=0; i<nelem(goerrors); i++) {
printf("\t%s = %s\n", goerrors[i].goname, goerrors[i].winname);
}
printf(")\n");
printf("\n// Windows reserves errors >= 1<<29 for application use.\n");
printf("const APPLICATION_ERROR = 1 << 29\n");
printf("\n// Invented values to support what package os and others expects.\n");
printf("const (\n");
for(i=0; i<nelem(errors); i++) {
e = errors[i].value;
strcpy(buf, strerror(e));
// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
buf[0] += a - A;
printf("\t%s", errors[i].name);
if(iota) {
printf(" = APPLICATION_ERROR + iota");
iota = !iota;
}
printf("\n");
}
printf("\tEWINDOWS\n");
printf(")\n");
printf("\n// Error strings for invented errors\n");
printf("var errors = [...]string {\n");
for(i=0; i<nelem(errors); i++) {
e = errors[i].value;
for(j=0; j<i; j++)
if(errors[j].value == e) // duplicate value
goto next;
strcpy(buf, strerror(e));
// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
buf[0] += a - A;
printf("\t%s - APPLICATION_ERROR: \"%s\",\n", errors[i].name, buf);
next:;
}
printf("\tEWINDOWS - APPLICATION_ERROR: \"not supported by windows\",\n");
printf("}\n\n");
return 0;
}
'
) >_errors.c
$GCC $ccflags -static -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors