mirror of
https://github.com/golang/go
synced 2024-10-04 09:21:21 -06:00
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
|
// 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.
|
||
|
|
|
||
|
|
// Extract import data from sys.6 and generate C string version.
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <ctype.h>
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
int
|
||
|
|
main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
FILE *fin;
|
||
|
|
char buf[1024], *p, *q;
|
||
|
|
|
||
|
|
if(argc != 2) {
|
||
|
|
fprintf(stderr, "usage: mksys sys.6\n");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
if((fin = fopen(argv[1], "r")) == NULL) {
|
||
|
|
fprintf(stderr, "open %s: %s\n", argv[1], strerror(errno));
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
// look for $$ that introduces imports
|
||
|
|
while(fgets(buf, sizeof buf, fin) != NULL)
|
||
|
|
if(strstr(buf, "$$"))
|
||
|
|
goto begin;
|
||
|
|
fprintf(stderr, "did not find beginning of imports\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
begin:
|
||
|
|
printf("char *sysimport = \n");
|
||
|
|
|
||
|
|
// process imports, stopping at $$ that closes them
|
||
|
|
while(fgets(buf, sizeof buf, fin) != NULL) {
|
||
|
|
buf[strlen(buf)-1] = 0; // chop \n
|
||
|
|
if(strstr(buf, "$$"))
|
||
|
|
goto end;
|
||
|
|
|
||
|
|
// chop leading white space
|
||
|
|
for(p=buf; *p==' ' || *p == '\t'; p++)
|
||
|
|
;
|
||
|
|
|
||
|
|
// cut out decl of init_sys_function - it doesn't exist
|
||
|
|
if(strstr(buf, "init_sys_function"))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
// sys.go claims to be in package SYS to avoid
|
||
|
|
// conflicts during "6g sys.go". rename SYS to sys.
|
||
|
|
for(q=p; *q; q++)
|
||
|
|
if(memcmp(q, "SYS", 3) == 0)
|
||
|
|
memmove(q, "sys", 3);
|
||
|
|
|
||
|
|
printf("\t\"%s\\n\"\n", p);
|
||
|
|
}
|
||
|
|
fprintf(stderr, "did not find end of imports\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
end:
|
||
|
|
printf("\t\"$$\\n\";\n");
|
||
|
|
return 0;
|
||
|
|
}
|