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Diffstat (limited to 'src/cmd/gc/mkbuiltin1.c')
-rw-r--r--src/cmd/gc/mkbuiltin1.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/src/cmd/gc/mkbuiltin1.c b/src/cmd/gc/mkbuiltin1.c
new file mode 100644
index 000000000..ad83c0346
--- /dev/null
+++ b/src/cmd/gc/mkbuiltin1.c
@@ -0,0 +1,84 @@
+// 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.
+
+// Compile .go file, import data from .6 file, and generate C string version.
+
+#include <u.h>
+#include <libc.h>
+#include <stdio.h>
+
+void esc(char*);
+
+void
+main(int argc, char **argv)
+{
+ char *name;
+ FILE *fin;
+ char buf[1024], initfunc[1024], *p, *q;
+
+ if(argc != 2) {
+ fprintf(stderr, "usage: mkbuiltin1 sys\n");
+ sysfatal("in file $1.6 s/PACKAGE/$1/\n");
+ }
+
+ name = argv[1];
+ snprintf(initfunc, sizeof(initfunc), "init_%s_function", name);
+
+ snprintf(buf, sizeof(buf), "%s.%s", name, getenv("O"));
+ if((fin = fopen(buf, "r")) == NULL) {
+ sysfatal("open %s: %r\n", buf);
+ }
+
+ // look for $$ that introduces imports
+ while(fgets(buf, sizeof buf, fin) != NULL)
+ if(strstr(buf, "$$"))
+ goto begin;
+ sysfatal("did not find beginning of imports\n");
+
+begin:
+ printf("char *%simport =\n", name);
+
+ // 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_$1_function - it doesn't exist
+ if(strstr(buf, initfunc))
+ continue;
+
+ // sys.go claims to be in package PACKAGE to avoid
+ // conflicts during "6g sys.go". rename PACKAGE to $2.
+ printf("\t\"");
+ while(q = strstr(p, "PACKAGE")) {
+ *q = 0;
+ esc(p); // up to the substitution
+ printf("%s", name); // the sub name
+ p = q+7; // continue with rest
+ }
+
+ esc(p);
+ printf("\\n\"\n");
+ }
+ sysfatal("did not find end of imports\n");
+
+end:
+ printf("\t\"$$\\n\";\n");
+ exits(0);
+}
+
+void
+esc(char *p)
+{
+ for(; *p; p++) {
+ if(*p == '\\' || *p == '\"')
+ printf("\\");
+ putchar(*p);
+ }
+}