| // 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 <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <ctype.h> |
| #include <errno.h> |
| |
| void esc(char*); |
| |
| int |
| 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"); |
| fprintf(stderr, "in file $1.6 s/PACKAGE/$1/\n"); |
| exit(1); |
| } |
| |
| 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) { |
| fprintf(stderr, "open %s: %s\n", buf, 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 *%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", p); |
| } |
| fprintf(stderr, "did not find end of imports\n"); |
| exit(1); |
| |
| end: |
| printf("\t\"$$\\n\";\n"); |
| return 0; |
| } |
| |
| void |
| esc(char *p) |
| { |
| for(; *p; p++) { |
| if(*p == '\\' || *p == '\"') |
| printf("\\"); |
| putchar(*p); |
| } |
| } |