diff options
Diffstat (limited to 'usr.bin/compile_et/compile_et.c')
| -rw-r--r-- | usr.bin/compile_et/compile_et.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/usr.bin/compile_et/compile_et.c b/usr.bin/compile_et/compile_et.c new file mode 100644 index 00000000000..3540cbb92bc --- /dev/null +++ b/usr.bin/compile_et/compile_et.c @@ -0,0 +1,289 @@ +/* $OpenBSD: compile_et.c,v 1.1 1996/11/11 05:06:34 downsj 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 1.1 1996/11/11 05:06:34 downsj Exp $"; +#endif + +extern char *gensym(); +extern char *current_token; +extern int table_number, current; +char buffer[BUFSIZ]; +char *table_name = (char *)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, "%s: usage: %s ERROR_TABLE\n", + whoami, 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 == (char *)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 == (FILE *)NULL) { + perror(h_file); + exit(1); + } + fprintf (hfile, warning, h_file); + + cfile = fopen(c_file, "w"); + if (cfile == (FILE *)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, %ldL, %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 (%ldL)\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); +} |