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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cpp.h"
Includelist includelist[NINCLUDE];
extern char *objname;
void appendDirToIncludeList( char *dir )
{
int i;
//avoid adding it more than once
for (i=NINCLUDE-2; i>=0; i--) {
if (includelist[i].file &&
!strcmp (includelist[i].file, dir)) {
return;
}
}
for (i=NINCLUDE-2; i>=0; i--) {
if (includelist[i].file==NULL) {
includelist[i].always = 1;
includelist[i].file = dir;
break;
}
}
if (i<0)
error(FATAL, "Too many -I directives");
}
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';
appendDirToIncludeList( basepath( fname ) );
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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