mirror of
https://github.com/golang/go
synced 2024-10-05 04:31:22 -06:00
0d37998a06
R=rsc, mikioh.mikioh CC=golang-dev https://golang.org/cl/5373097
203 lines
3.8 KiB
Bash
Executable File
203 lines
3.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2009 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# Generate Go code listing errors and other #defined constant
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# values (ENAMETOOLONG etc.), by asking the preprocessor
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# about the definitions.
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unset LANG
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export LC_ALL=C
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export LC_CTYPE=C
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case "$GOARCH" in
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arm)
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GCC=arm-gcc
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;;
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*)
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GCC=gcc
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;;
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esac
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uname=$(uname)
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includes_Linux='
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#define _FILE_OFFSET_BITS 64
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/epoll.h>
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#include <linux/ptrace.h>
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#include <linux/wait.h>
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'
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includes_Darwin='
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#define __DARWIN_UNIX03 0
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#define KERNEL
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#define _DARWIN_USE_64_BIT_INODE
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#include <sys/wait.h>
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#include <sys/event.h>
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'
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includes_FreeBSD='
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#include <sys/wait.h>
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#include <sys/event.h>
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'
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includes='
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#include <sys/types.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <netinet/tcp.h>
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#include <errno.h>
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#include <sys/signal.h>
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#include <signal.h>
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'
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ccflags=""
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next=false
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for i
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do
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if $next; then
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ccflags="$ccflags $i"
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next=false
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elif [ "$i" = "-f" ]; then
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next=true
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fi
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done
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# These are go errors that will be mapped directly to windows errors
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goerrors='
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ENOENT:ERROR_FILE_NOT_FOUND
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ENOTDIR:ERROR_PATH_NOT_FOUND
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'
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# Pull out just the error names for later.
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i=$(
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for j in "$goerrors"
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do
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echo "$j"
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done |
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awk -F: '
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{ if (NR > 1) printf("|") }
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{ printf("%s", $1) }
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'
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)
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errors=$(
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echo '#include <errno.h>' | $GCC -x c - -E -dM $ccflags |
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awk '
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$1 != "#define" || $2 ~ /\(/ {next}
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$2 ~ /^('$i')$/ {next}
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$2 ~ /^E[A-Z0-9_]+$/ { print $2 }
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{next}
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' | sort
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)
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echo '// mkerrors_windows.sh' "$@"
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echo '// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT'
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echo
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echo 'package syscall'
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# Run C program to print error strings.
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(
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/bin/echo "
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#include <stdio.h>
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#include <errno.h>
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#include <ctype.h>
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#include <string.h>
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#define nelem(x) (sizeof(x)/sizeof((x)[0]))
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enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
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struct {
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char *goname;
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char *winname;
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} goerrors[] = {
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"
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for i in $goerrors
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do
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j=`echo $i | cut -d: -f1`
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k=`echo $i | cut -d: -f2`
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echo ' {"'$j'", "'$k'"},'
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done
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# Use /bin/echo to avoid builtin echo,
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# which interprets \n itself
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/bin/echo '
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};
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struct {
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char *name;
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int value;
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} errors[] = {
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'
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for i in $errors
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do
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echo ' {"'$i'",' $i'},'
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done
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# Use /bin/echo to avoid builtin echo,
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# which interprets \n itself
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/bin/echo '
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};
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int
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main(void)
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{
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int i, e, iota = 1;
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char buf[1024];
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printf("\n// Go names for Windows errors.\n");
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printf("const (\n");
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for(i=0; i<nelem(goerrors); i++) {
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printf("\t%s Errno = %s\n", goerrors[i].goname, goerrors[i].winname);
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}
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printf(")\n");
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printf("\n// Windows reserves errors >= 1<<29 for application use.\n");
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printf("const APPLICATION_ERROR = 1 << 29\n");
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printf("\n// Invented values to support what package os and others expects.\n");
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printf("const (\n");
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for(i=0; i<nelem(errors); i++) {
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printf("\t%s", errors[i].name);
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if(iota) {
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printf(" Errno = APPLICATION_ERROR + iota");
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iota = !iota;
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}
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printf("\n");
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}
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printf("\tEWINDOWS\n");
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printf(")\n");
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printf("\n// Error strings for invented errors\n");
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printf("var errors = [...]string {\n");
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for(i=0; i<nelem(errors); i++) {
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e = errors[i].value;
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strcpy(buf, strerror(e));
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// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
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if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
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buf[0] += a - A;
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printf("\t%s - APPLICATION_ERROR: \"%s\",\n", errors[i].name, buf);
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next:;
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}
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printf("\tEWINDOWS - APPLICATION_ERROR: \"not supported by windows\",\n");
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printf("}\n\n");
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return 0;
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}
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'
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) >_errors.c
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$GCC $ccflags -static -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors
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