ack/util/cpp/main.c

145 lines
2.6 KiB
C

/* $Header$ */
/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* MAIN PROGRAM */
#include <alloc.h>
#include <em_arith.h>
#include <assert.h>
#include "file_info.h"
#include "idfsize.h"
#include "mkdep.h"
#ifdef MKDEP
#include "idf.h"
#include "macro.h"
#endif
extern char *symbol2str();
extern char *getwdir();
extern int err_occurred;
int idfsize = IDFSIZE;
extern char options[];
arith ifval;
char *prog_name;
extern char **inctable;
extern int inc_max, inc_total;
main(argc, argv)
char *argv[];
{
/* parse and interpret the command line options */
prog_name = argv[0];
init_idf();
inctable = (char **) Malloc(10 * sizeof(char *));
inc_max = 10;
inc_total = 3;
inctable[0] = "";
inctable[1] = "/usr/include";
init_pp(); /* initialise the preprocessor macros */
/* Note: source file "-" indicates that the source is supplied
as standard input. This is only allowed if INP_READ_IN_ONE is
not defined!
*/
while (argc > 1 && *argv[1] == '-' && argv[1][1] != '\0') {
char *par = &argv[1][1];
if (*par == '-')
par++;
do_option(par);
argc--, argv++;
}
#ifdef MKDEP
options['P'] = 1;
#endif
compile(argc - 1, &argv[1]);
exit(err_occurred);
}
compile(argc, argv)
char *argv[];
{
register char *source = 0;
char *dummy;
switch (argc) {
case 1:
source = argv[0];
FileName = source;
break;
case 0:
FileName = "";
WorkingDir = 0;
break;
default:
FileName = argv[0];
fatal("use: %s [options] [source]", prog_name);
break;
}
if (!InsertFile(source, (char **) 0, &dummy)) /* read the source file */
fatal("%s: no source file %s\n", prog_name,
source ? source : "stdin");
if (source) WorkingDir = getwdir(dummy);
preprocess(source);
#ifdef MKDEP
list_dependencies(source);
#endif
}
#ifdef MKDEP
struct idf *file_head;
extern char *strrindex();
list_dependencies(source)
char *source;
{
register struct idf *p = file_head;
if (source) {
register char *s = strrindex(source, '.');
if (s && *(s+1)) {
s++;
*s++ = 'o';
*s = '\0';
}
else source = 0;
}
while (p) {
assert(p->id_resmac == K_FILE);
dependency(p->id_text, source);
p = p->id_file;
}
}
add_dependency(s)
char *s;
{
register struct idf *p = str2idf(s, 0);
if (! p->id_resmac) {
p->id_resmac = K_FILE;
p->id_file = file_head;
file_head = p;
}
}
dependency(s, source)
char *s;
{
if (options['s'] && !strncmp(s, "/usr/include/", 13)) {
return;
}
if (options['m'] && source) print("%s: ", source);
print("%s\n", s);
}
#endif