120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "cpp.h"
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Includelist includelist[NINCLUDE];
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extern char *objname;
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void
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doinclude(Tokenrow *trp)
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{
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char fname[256], iname[256];
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Includelist *ip;
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int angled, len, i;
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FILE *fd;
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trp->tp += 1;
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if (trp->tp>=trp->lp)
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goto syntax;
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if (trp->tp->type!=STRING && trp->tp->type!=LT) {
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len = trp->tp - trp->bp;
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expandrow(trp, "<include>", Notinmacro);
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trp->tp = trp->bp+len;
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}
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if (trp->tp->type==STRING) {
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len = trp->tp->len-2;
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if (len > sizeof(fname) - 1)
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len = sizeof(fname) - 1;
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strncpy(fname, (char*)trp->tp->t+1, len);
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angled = 0;
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} else if (trp->tp->type==LT) {
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len = 0;
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trp->tp++;
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while (trp->tp->type!=GT) {
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if (trp->tp>trp->lp || len+trp->tp->len+2 >= sizeof(fname))
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goto syntax;
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strncpy(fname+len, (char*)trp->tp->t, trp->tp->len);
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len += trp->tp->len;
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trp->tp++;
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}
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angled = 1;
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} else
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goto syntax;
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trp->tp += 2;
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if (trp->tp < trp->lp || len==0)
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goto syntax;
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fname[len] = '\0';
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if (fname[0]=='/') {
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fd = fopen(fname, "r");
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strcpy(iname, fname);
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} else for (fd = NULL,i=NINCLUDE-1; i>=0; i--) {
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ip = &includelist[i];
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if (ip->file==NULL || ip->deleted || (angled && ip->always==0))
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continue;
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if (strlen(fname)+strlen(ip->file)+2 > sizeof(iname))
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continue;
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strcpy(iname, ip->file);
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strcat(iname, "/");
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strcat(iname, fname);
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if ((fd = fopen(iname, "r")) != NULL)
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break;
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}
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if ( Mflag>1 || !angled&&Mflag==1 ) {
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fwrite(objname,1,strlen(objname),stdout);
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fwrite(iname,1,strlen(iname),stdout);
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fwrite("\n",1,1,stdout);
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}
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if (fd != NULL) {
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if (++incdepth > 10)
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error(FATAL, "#include too deeply nested");
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setsource((char*)newstring((uchar*)iname, strlen(iname), 0), fd, NULL);
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genline();
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} else {
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trp->tp = trp->bp+2;
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error(ERROR, "Could not find include file %r", trp);
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}
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return;
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syntax:
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error(ERROR, "Syntax error in #include");
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return;
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}
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/*
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* Generate a line directive for cursource
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*/
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void
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genline(void)
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{
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static Token ta = { UNCLASS };
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static Tokenrow tr = { &ta, &ta, &ta+1, 1 };
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uchar *p;
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ta.t = p = (uchar*)outptr;
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strcpy((char*)p, "#line ");
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p += sizeof("#line ")-1;
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p = (uchar*)outnum((char*)p, cursource->line);
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*p++ = ' '; *p++ = '"';
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strcpy((char*)p, cursource->filename);
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p += strlen((char*)p);
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*p++ = '"'; *p++ = '\n';
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ta.len = (char*)p-outptr;
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outptr = (char*)p;
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tr.tp = tr.bp;
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puttokens(&tr);
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}
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void
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setobjname(char *f)
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{
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int n = strlen(f);
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objname = (char*)domalloc(n+5);
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strcpy(objname,f);
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if(objname[n-2]=='.'){
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strcpy(objname+n-1,"$O: ");
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}else{
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strcpy(objname+n,"$O: ");
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}
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}
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