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/* $OpenBSD: compile_et.c,v 1.3 1997/06/17 20:28:56 kstailey Exp $ */
/*
* Copyright 1986, 1987, 1988
* by MIT Student Information Processing Board.
*
* For copyright info, see "mit-sipb-copyright.h".
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/file.h>
#include <string.h>
#include <sys/param.h>
#include "compiler.h"
#ifndef __STDC__
#define const
#endif
#ifndef lint
static const char copyright[] =
"Copyright 1987,1988 by MIT Student Information Processing Board";
static const char rcsid_compile_et_c[] =
"$Id: compile_et.c,v 1.3 1997/06/17 20:28:56 kstailey Exp $";
#endif
extern char *gensym();
extern char *current_token;
extern int table_number, current;
char buffer[BUFSIZ];
char *table_name = NULL;
FILE *hfile, *cfile;
/* C library */
extern char *malloc();
extern int errno;
/* lex stuff */
extern FILE *yyin;
extern unsigned lineno;
char * xmalloc (size) unsigned int size; {
char * p = malloc (size);
if (!p) {
perror (whoami);
exit (1);
}
return p;
}
static int check_arg (str_list, arg) char const *const *str_list, *arg; {
while (*str_list)
if (!strcmp(arg, *str_list++))
return 1;
return 0;
}
static const char *const debug_args[] = {
"d",
"debug",
0,
};
static const char *const lang_args[] = {
"lang",
"language",
0,
};
static const char *const language_names[] = {
"C",
"K&R C",
"C++",
0,
};
static const char * const c_src_prolog[] = {
"static const char * const text[] = {\n",
0,
};
static const char * const krc_src_prolog[] = {
"#ifdef __STDC__\n",
"#define NOARGS void\n",
"#else\n",
"#define NOARGS\n",
"#define const\n",
"#endif\n\n",
"static const char * const text[] = {\n",
0,
};
static const char *const struct_def[] = {
"struct error_table {\n",
" char const * const * msgs;\n",
" long base;\n",
" int n_msgs;\n",
"};\n",
"struct et_list {\n",
" struct et_list *next;\n",
" const struct error_table * table;\n",
"};\n",
"extern struct et_list *_et_list;\n",
"\n", 0,
};
static const char warning[] =
"/*\n * %s:\n * This file is automatically generated; please do not edit it.\n */\n";
/* pathnames */
char c_file[MAXPATHLEN]; /* output file */
char h_file[MAXPATHLEN]; /* output */
static void usage () {
fprintf (stderr, "usage: %s ERROR_TABLE\n",
whoami);
exit (1);
}
static void dup_err (type, one, two) char const *type, *one, *two; {
fprintf (stderr, "%s: multiple %s specified: `%s' and `%s'\n",
whoami, type, one, two);
usage ();
}
int main (argc, argv) int argc; char **argv; {
char *p, *ename;
int len;
char const * const *cpp;
int got_language = 0;
/* argument parsing */
debug = 0;
filename = 0;
whoami = argv[0];
p = strrchr (whoami, '/');
if (p)
whoami = p+1;
while (argv++, --argc) {
char *arg = *argv;
if (arg[0] != '-') {
if (filename)
dup_err ("filenames", filename, arg);
filename = arg;
}
else {
arg++;
if (check_arg (debug_args, arg))
debug++;
else if (check_arg (lang_args, arg)) {
got_language++;
arg = *++argv, argc--;
if (!arg)
usage ();
if (language)
dup_err ("languanges", language_names[(int)language], arg);
#define check_lang(x,v) else if (!strcasecmp(arg,x)) language = v
check_lang ("c", lang_C);
check_lang ("ansi_c", lang_C);
check_lang ("ansi-c", lang_C);
check_lang ("krc", lang_KRC);
check_lang ("kr_c", lang_KRC);
check_lang ("kr-c", lang_KRC);
check_lang ("k&r-c", lang_KRC);
check_lang ("k&r_c", lang_KRC);
check_lang ("c++", lang_CPP);
check_lang ("cplusplus", lang_CPP);
check_lang ("c-plus-plus", lang_CPP);
#undef check_lang
else {
fprintf (stderr, "%s: unknown language name `%s'\n",
whoami, arg);
fprintf (stderr, "\tpick one of: C K&R-C\n");
exit (1);
}
}
else {
fprintf (stderr, "%s: unknown control argument -`%s'\n",
whoami, arg);
usage ();
}
}
}
if (!filename)
usage ();
if (!got_language)
language = lang_KRC;
else if (language == lang_CPP) {
fprintf (stderr, "%s: Sorry, C++ support is not yet finished.\n",
whoami);
exit (1);
}
p = xmalloc (strlen (filename) + 5);
strcpy (p, filename);
filename = p;
p = strrchr(filename, '/');
if (p == NULL)
p = filename;
else
p++;
ename = p;
len = strlen (ename);
p += len - 3;
if (strcmp (p, ".et"))
p += 3;
*p++ = '.';
/* now p points to where "et" suffix should start */
/* generate new filenames */
strcpy (p, "c");
strcpy (c_file, ename);
*p = 'h';
strcpy (h_file, ename);
strcpy (p, "et");
yyin = fopen(filename, "r");
if (!yyin) {
perror(filename);
exit(1);
}
hfile = fopen(h_file, "w");
if (hfile == NULL) {
perror(h_file);
exit(1);
}
fprintf (hfile, warning, h_file);
cfile = fopen(c_file, "w");
if (cfile == NULL) {
perror(c_file);
exit(1);
}
fprintf (cfile, warning, c_file);
/* prologue */
if (language == lang_C)
cpp = c_src_prolog;
else if (language == lang_KRC)
cpp = krc_src_prolog;
else
abort ();
while (*cpp)
fputs (*cpp++, cfile);
/* parse it */
yyparse();
fclose(yyin); /* bye bye input file */
fputs (" 0\n};\n\n", cfile);
for (cpp = struct_def; *cpp; cpp++)
fputs (*cpp, cfile);
fprintf(cfile,
"static const struct error_table et = { text, %dL, %d };\n\n",
table_number, current);
fputs("static struct et_list link = { 0, 0 };\n\n",
cfile);
fprintf(cfile, "void initialize_%s_error_table (%s) {\n",
table_name, (language == lang_C) ? "void" : "NOARGS");
fputs(" if (!link.table) {\n", cfile);
fputs(" link.next = _et_list;\n", cfile);
fputs(" link.table = &et;\n", cfile);
fputs(" _et_list = &link;\n", cfile);
fputs(" }\n", cfile);
fputs("}\n", cfile);
fclose(cfile);
fprintf (hfile, "extern void initialize_%s_error_table ();\n",
table_name);
fprintf (hfile, "#define ERROR_TABLE_BASE_%s (%dL)\n",
table_name, table_number);
/* compatibility... */
fprintf (hfile, "\n/* for compatibility with older versions... */\n");
fprintf (hfile, "#define init_%s_err_tbl initialize_%s_error_table\n",
table_name, table_name);
fprintf (hfile, "#define %s_err_base ERROR_TABLE_BASE_%s\n", table_name,
table_name);
fclose(hfile); /* bye bye include file */
return 0;
}
int yyerror(s) char *s; {
fputs(s, stderr);
fprintf(stderr, "\nLine number %d; last token was '%s'\n",
lineno, current_token);
return 0;
}
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