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freebsd/usr.bin/mk_cmds/mk_cmds.c
Philippe Charnier 7501dcaa36 Add usage().
1997-07-24 07:00:17 +00:00

101 lines
2.0 KiB
C

/*
* make_commands.c
*
* Header: mk_cmds.c,v 1.6 89/01/25 07:47:26 raeburn Exp
* $Locker: $
*
* Copyright 1987, 1988 by MIT Student Information Processing Board
*
* For copyright information, see copyright.h.
*/
#include "copyright.h"
#include <stdio.h>
#include <sys/param.h>
#include <sys/file.h>
#include <strings.h>
#include "ss_internal.h"
static const char copyright[] =
"Copyright 1987 by MIT Student Information Processing Board";
extern pointer malloc PROTOTYPE((unsigned));
extern char *last_token;
extern FILE *output_file;
extern FILE *yyin, *yyout;
extern int yylineno;
static void
usage(void)
{
fprintf(stderr, "usage: mk_cmds cmdtbl.ct\n");
exit(1);
}
int
main(argc, argv)
int argc;
char **argv;
{
char c_file[MAXPATHLEN];
int result;
char *path, *p;
if (argc != 2)
usage();
path = malloc(strlen(argv[1])+4); /* extra space to add ".ct" */
strcpy(path, argv[1]);
p = rindex(path, '/');
if (p == (char *)NULL)
p = path;
else
p++;
p = rindex(p, '.');
if (p == (char *)NULL || strcmp(p, ".ct"))
strcat(path, ".ct");
yyin = fopen(path, "r");
if (!yyin) {
perror(path);
exit(1);
}
p = rindex(path, '.');
*p = '\0';
strcpy(c_file, path);
strcat(c_file, ".c");
*p = '.';
output_file = fopen(c_file, "w+");
if (!output_file) {
perror(c_file);
exit(1);
}
fputs("/* ", output_file);
fputs(c_file, output_file);
fputs(" - automatically generated from ", output_file);
fputs(path, output_file);
fputs(" */\n", output_file);
fputs("#include <ss/ss.h>\n\n", output_file);
fputs("#ifndef __STDC__\n#define const\n#endif\n\n", output_file);
/* parse it */
result = yyparse();
/* put file descriptors back where they belong */
fclose(yyin); /* bye bye input file */
fclose(output_file); /* bye bye output file */
return result;
}
int
yyerror(s)
char *s;
{
fputs(s, stderr);
fprintf(stderr, "\nLine %d; last token was '%s'\n",
yylineno, last_token);
return 0;
}