diff options
Diffstat (limited to 'lcc/cpp/include.c')
| -rwxr-xr-x | lcc/cpp/include.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/lcc/cpp/include.c b/lcc/cpp/include.c new file mode 100755 index 0000000..66f1fc3 --- /dev/null +++ b/lcc/cpp/include.c @@ -0,0 +1,122 @@ +#include <stdlib.h>
+#include <string.h>
+#include "cpp.h"
+
+Includelist includelist[NINCLUDE];
+
+extern char *objname;
+
+void
+doinclude(Tokenrow *trp)
+{
+ char fname[256], iname[256];
+ Includelist *ip;
+ int angled, len, fd, i;
+
+ trp->tp += 1;
+ if (trp->tp>=trp->lp)
+ goto syntax;
+ if (trp->tp->type!=STRING && trp->tp->type!=LT) {
+ len = trp->tp - trp->bp;
+ expandrow(trp, "<include>");
+ trp->tp = trp->bp+len;
+ }
+ if (trp->tp->type==STRING) {
+ len = trp->tp->len-2;
+ if (len > sizeof(fname) - 1)
+ len = sizeof(fname) - 1;
+ strncpy(fname, (char*)trp->tp->t+1, len);
+ angled = 0;
+ } else if (trp->tp->type==LT) {
+ len = 0;
+ trp->tp++;
+ while (trp->tp->type!=GT) {
+ if (trp->tp>trp->lp || len+trp->tp->len+2 >= sizeof(fname))
+ goto syntax;
+ strncpy(fname+len, (char*)trp->tp->t, trp->tp->len);
+ len += trp->tp->len;
+ trp->tp++;
+ }
+ angled = 1;
+ } else
+ goto syntax;
+ trp->tp += 2;
+ if (trp->tp < trp->lp || len==0)
+ goto syntax;
+ fname[len] = '\0';
+ if (fname[0]=='/') {
+ fd = open(fname, 0);
+ strcpy(iname, fname);
+ } else for (fd = -1,i=NINCLUDE-1; i>=0; i--) {
+ ip = &includelist[i];
+ if (ip->file==NULL || ip->deleted || (angled && ip->always==0))
+ continue;
+ if (strlen(fname)+strlen(ip->file)+2 > sizeof(iname))
+ continue;
+ strcpy(iname, ip->file);
+ strcat(iname, "/");
+ strcat(iname, fname);
+ if ((fd = open(iname, 0)) >= 0)
+ break;
+ }
+ if ( Mflag>1 || !angled&&Mflag==1 ) {
+ write(1,objname,strlen(objname));
+ write(1,iname,strlen(iname));
+ write(1,"\n",1);
+ }
+ if (fd >= 0) {
+ if (++incdepth > 10)
+ error(FATAL, "#include too deeply nested");
+ setsource((char*)newstring((uchar*)iname, strlen(iname), 0), fd, NULL);
+ genline();
+ } else {
+ trp->tp = trp->bp+2;
+ error(ERROR, "Could not find include file %r", trp);
+ }
+ return;
+syntax:
+ error(ERROR, "Syntax error in #include");
+ return;
+}
+
+/*
+ * Generate a line directive for cursource
+ */
+void
+genline(void)
+{
+ static Token ta = { UNCLASS };
+ static Tokenrow tr = { &ta, &ta, &ta+1, 1 };
+ uchar *p;
+
+ ta.t = p = (uchar*)outp;
+ strcpy((char*)p, "#line ");
+ p += sizeof("#line ")-1;
+ p = (uchar*)outnum((char*)p, cursource->line);
+ *p++ = ' '; *p++ = '"';
+ if (cursource->filename[0]!='/' && wd[0]) {
+ strcpy((char*)p, wd);
+ p += strlen(wd);
+ *p++ = '/';
+ }
+ strcpy((char*)p, cursource->filename);
+ p += strlen((char*)p);
+ *p++ = '"'; *p++ = '\n';
+ ta.len = (char*)p-outp;
+ outp = (char*)p;
+ tr.tp = tr.bp;
+ puttokens(&tr);
+}
+
+void
+setobjname(char *f)
+{
+ int n = strlen(f);
+ objname = (char*)domalloc(n+5);
+ strcpy(objname,f);
+ if(objname[n-2]=='.'){
+ strcpy(objname+n-1,"$O: ");
+ }else{
+ strcpy(objname+n,"$O: ");
+ }
+}
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