diff options
Diffstat (limited to 'lcc/cpp/unix.c')
| -rwxr-xr-x | lcc/cpp/unix.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/lcc/cpp/unix.c b/lcc/cpp/unix.c new file mode 100755 index 0000000..332ab0c --- /dev/null +++ b/lcc/cpp/unix.c @@ -0,0 +1,116 @@ +#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cpp.h"
+
+extern int getopt(int, char *const *, const char *);
+extern char *optarg, rcsid[];
+extern int optind;
+int verbose;
+int Mflag; /* only print active include files */
+char *objname; /* "src.$O: " */
+int Cplusplus = 1;
+
+void
+setup(int argc, char **argv)
+{
+ int c, fd, i;
+ char *fp, *dp;
+ Tokenrow tr;
+ extern void setup_kwtab(void);
+
+ setup_kwtab();
+ while ((c = getopt(argc, argv, "MNOVv+I:D:U:F:lg")) != -1)
+ switch (c) {
+ case 'N':
+ for (i=0; i<NINCLUDE; i++)
+ if (includelist[i].always==1)
+ includelist[i].deleted = 1;
+ break;
+ case 'I':
+ for (i=NINCLUDE-2; i>=0; i--) {
+ if (includelist[i].file==NULL) {
+ includelist[i].always = 1;
+ includelist[i].file = optarg;
+ break;
+ }
+ }
+ if (i<0)
+ error(FATAL, "Too many -I directives");
+ break;
+ case 'D':
+ case 'U':
+ setsource("<cmdarg>", -1, optarg);
+ maketokenrow(3, &tr);
+ gettokens(&tr, 1);
+ doadefine(&tr, c);
+ unsetsource();
+ break;
+ case 'M':
+ Mflag++;
+ break;
+ case 'v':
+ fprintf(stderr, "%s %s\n", argv[0], rcsid);
+ break;
+ case 'V':
+ verbose++;
+ break;
+ case '+':
+ Cplusplus++;
+ break;
+ default:
+ break;
+ }
+ dp = ".";
+ fp = "<stdin>";
+ fd = 0;
+ if (optind<argc) {
+ if ((fp = strrchr(argv[optind], '/')) != NULL) {
+ int len = fp - argv[optind];
+ dp = (char*)newstring((uchar*)argv[optind], len+1, 0);
+ dp[len] = '\0';
+ }
+ fp = (char*)newstring((uchar*)argv[optind], strlen(argv[optind]), 0);
+ if ((fd = open(fp, 0)) <= 0)
+ error(FATAL, "Can't open input file %s", fp);
+ }
+ if (optind+1<argc) {
+ int fdo = creat(argv[optind+1], 0666);
+ if (fdo<0)
+ error(FATAL, "Can't open output file %s", argv[optind+1]);
+ dup2(fdo, 1);
+ }
+ if(Mflag)
+ setobjname(fp);
+ includelist[NINCLUDE-1].always = 0;
+ includelist[NINCLUDE-1].file = dp;
+ setsource(fp, fd, NULL);
+}
+
+
+
+/* memmove is defined here because some vendors don't provide it at
+ all and others do a terrible job (like calling malloc) */
+void *
+memmove(void *dp, const void *sp, size_t n)
+{
+ unsigned char *cdp, *csp;
+
+ if (n<=0)
+ return 0;
+ cdp = dp;
+ csp = (unsigned char *)sp;
+ if (cdp < csp) {
+ do {
+ *cdp++ = *csp++;
+ } while (--n);
+ } else {
+ cdp += n;
+ csp += n;
+ do {
+ *--cdp = *--csp;
+ } while (--n);
+ }
+ return 0;
+}
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