4.4BSD/usr/src/old/make/files.c
static char *sccsid = "@(#)files.c 4.22 (Berkeley) 91/02/28";
#include <sys/types.h>
#include <fcntl.h>
/* UNIX DEPENDENT PROCEDURES */
/* DEFAULT RULES FOR UNIX */
char *builtin[] =
{
#ifdef pwb
".SUFFIXES : .L .out .o .c .f .e .r .y .yr .ye .l .s .z .x .t .h .cl",
#else
".SUFFIXES : .out .o .c .F .f .e .r .y .yr .ye .l .s .cl .p .8 .7 .6 .5 .4 .3 .2 .1 .0",
#endif
"YACC=yacc",
"YACCR=yacc -r",
"YACCE=yacc -e",
"YFLAGS=",
"LEX=lex",
"LFLAGS=",
"CC=cc",
"CPP=cpp",
#if defined(vax) || defined(sun) || defined(tahoe)
"AS=as",
#else
"AS=as -",
#endif
"PC=pc",
"PFLAGS=",
"CFLAGS=",
"RC=f77",
"RFLAGS=",
"FC=f77",
"EFLAGS=",
"FFLAGS=",
"LOADLIBES=",
"NROFF=nroff",
#ifdef pwb
"SCOMP=scomp",
"SCFLAGS=",
"CMDICT=cmdict",
"CMFLAGS=",
#endif
".c.o :",
"\t$(CC) $(CFLAGS) -c $<",
".p.o :",
"\t$(PC) $(PFLAGS) -c $<",
".cl.o :",
"\tclass -c $<",
".e.o .r.o .F.o .f.o :",
"\t$(FC) $(RFLAGS) $(EFLAGS) $(FFLAGS) -c $<",
".s.o :",
"\t$(AS) -o $@ $<",
".y.o :",
"\t$(YACC) $(YFLAGS) $<",
"\t$(CC) $(CFLAGS) -c y.tab.c",
"\trm y.tab.c",
"\tmv y.tab.o $@",
".yr.o:",
"\t$(YACCR) $(YFLAGS) $<",
"\t$(RC) $(RFLAGS) -c y.tab.r",
"\trm y.tab.r",
"\tmv y.tab.o $@",
".ye.o :",
"\t$(YACCE) $(YFLAGS) $<",
"\t$(EC) $(RFLAGS) -c y.tab.e",
"\trm y.tab.e",
"\tmv y.tab.o $@",
".l.o :",
"\t$(LEX) $(LFLAGS) $<",
"\t$(CC) $(CFLAGS) -c lex.yy.c",
"\trm lex.yy.c",
"\tmv lex.yy.o $@",
".y.c :",
"\t$(YACC) $(YFLAGS) $<",
"\tmv y.tab.c $@",
".l.c :",
"\t$(LEX) $(LFLAGS) $<",
"\tmv lex.yy.c $@",
".yr.r:",
"\t$(YACCR) $(YFLAGS) $<",
"\tmv y.tab.r $@",
".ye.e :",
"\t$(YACCE) $(YFLAGS) $<",
"\tmv y.tab.e $@",
#ifdef pwb
".o.L .c.L .t.L:",
"\t$(SCOMP) $(SCFLAGS) $<",
".t.o:",
"\t$(SCOMP) $(SCFLAGS) -c $<",
".t.c:",
"\t$(SCOMP) $(SCFLAGS) -t $<",
".h.z .t.z:",
"\t$(CMDICT) $(CMFLAGS) $<",
".h.x .t.x:",
"\t$(CMDICT) $(CMFLAGS) -c $<",
#endif
".s.out .c.out .o.out :",
"\t$(CC) $(CFLAGS) $< $(LOADLIBES) -o $@",
".f.out .F.out .r.out .e.out :",
"\t$(FC) $(EFLAGS) $(RFLAGS) $(FFLAGS) $< $(LOADLIBES) -o $@",
"\t-rm $*.o",
".y.out :",
"\t$(YACC) $(YFLAGS) $<",
"\t$(CC) $(CFLAGS) y.tab.c $(LOADLIBES) -ly -o $@",
"\trm y.tab.c",
".l.out :",
"\t$(LEX) $(LFLAGS) $<",
"\t$(CC) $(CFLAGS) lex.yy.c $(LOADLIBES) -ll -o $@",
"\trm lex.yy.c",
".8.0 :",
"\t$(NROFF) -man -h $< > $@",
".7.0 :",
"\t$(NROFF) -man -h $< > $@",
".6.0 :",
"\t$(NROFF) -man -h $< > $@",
".5.0 :",
"\t$(NROFF) -man -h $< > $@",
".4.0 :",
"\t$(NROFF) -man -h $< > $@",
".3.0 :",
"\t$(NROFF) -man -h $< > $@",
".2.0 :",
"\t$(NROFF) -man -h $< > $@",
".1.0 :",
"\t$(NROFF) -man -h $< > $@",
0 };
#include "defs"
#include <sys/stat.h>
TIMETYPE
exists(pname)
struct nameblock *pname;
{
struct stat buf;
register char *s, *filename;
TIMETYPE lookarch();
extern char *findfl();
filename = pname->namep;
for(s = filename ; *s!='\0' && *s!='(' ; ++s)
;
if(*s == '(')
return(lookarch(filename));
if (stat(filename, &buf) < 0)
{
s = findfl(filename);
if(s != (char *)-1)
{
pname->alias = copys(s);
if(stat(pname->alias, &buf) == 0)
return(buf.st_mtime);
}
return(0);
}
else return(buf.st_mtime);
}
TIMETYPE prestime()
{
TIMETYPE t;
time(&t);
return(t);
}
FSTATIC char nbuf[MAXNAMLEN + 1];
FSTATIC char *nbufend = &nbuf[MAXNAMLEN];
static int amatch();
struct depblock *srchdir(pat, mkchain, nextdbl)
register char *pat; /* pattern to be matched in directory */
int mkchain; /* nonzero if results to be remembered */
struct depblock *nextdbl; /* final value for chain */
{
DIR *dirf;
register int i;
int nread, cldir;
char *dirname, *dirpref, *endir, *filepat, *p, temp[BUFSIZ];
char fullname[BUFSIZ], *p1, *p2;
struct nameblock *q;
struct depblock *thisdbl;
struct dirhdr *od;
struct pattern *patp;
struct varblock *cp, *varptr();
char *path, pth[BUFSIZ], *strcpy();
struct dirent *dptr;
thisdbl = 0;
if(mkchain == NO)
for(patp=firstpat ; patp ; patp = patp->nxtpattern)
if(! unequal(pat, patp->patval)) return(0);
patp = ALLOC(pattern);
patp->nxtpattern = firstpat;
firstpat = patp;
patp->patval = copys(pat);
endir = 0;
for(p=pat; *p!='\0'; ++p)
if(*p=='/') endir = p;
if(endir==0)
{
dirpref = "";
filepat = pat;
cp = varptr("VPATH");
if (cp->varval == NULL) path = ".";
else {
path = pth;
*path = '\0';
if (strncmp(cp->varval, ".:", 2) != 0) strcpy(pth,".:");
strcat(pth, cp->varval);
}
}
else {
*endir = '\0';
path = strcpy(pth, pat);
dirpref = concat(pat, "/", temp);
filepat = endir+1;
}
while (*path) { /* Loop thru each VPATH directory */
dirname = path;
for (; *path; path++)
if (*path == ':') {
*path++ = '\0';
break;
}
dirf = NULL;
cldir = NO;
for(od = firstod; od; od = od->nxtopendir)
if(! unequal(dirname, od->dirn) )
{
dirf = od->dirfc;
if (dirf != NULL)
rewinddir(dirf); /* start over at the beginning */
break;
}
if(dirf == NULL)
{
dirf = opendir(dirname);
if(nopdir >= MAXDIR)
cldir = YES;
else {
++nopdir;
od = ALLOC(dirhdr);
od->nxtopendir = firstod;
firstod = od;
od->dirfc = dirf;
od->dirn = copys(dirname);
fcntl(dirfd(dirf), F_SETFD, 1);
}
}
if(dirf == NULL)
{
fprintf(stderr, "Directory %s: ", dirname);
fatal("Cannot open");
}
else for (dptr = readdir(dirf); dptr != NULL; dptr = readdir(dirf))
{
p1 = dptr->d_name;
p2 = nbuf;
while( (p2<nbufend) && (*p2++ = *p1++)!='\0' )
/* void */;
if( amatch(nbuf,filepat) )
{
concat(dirpref,nbuf,fullname);
if( (q=srchname(fullname)) ==0)
q = makename(copys(fullname));
if(mkchain)
{
thisdbl = ALLOC(depblock);
thisdbl->nxtdepblock = nextdbl;
thisdbl->depname = q;
nextdbl = thisdbl;
}
}
}
if(endir != 0) *endir = '/';
if(cldir) {
closedir(dirf);
dirf = NULL;
}
} /* End of VPATH loop */
return(thisdbl);
}
/* stolen from glob through find */
static amatch(s, p)
char *s, *p;
{
register int cc, scc, k;
int c, lc;
static int umatch();
scc = *s;
lc = 077777;
switch (c = *p) {
case '[':
k = 0;
while (cc = *++p) {
switch (cc) {
case ']':
if (k)
return(amatch(++s, ++p));
else
return(0);
case '-':
k |= (lc <= scc) & (scc <= (cc=p[1]) ) ;
}
if (scc==(lc=cc)) k++;
}
return(0);
case '?':
caseq:
if(scc) return(amatch(++s, ++p));
return(0);
case '*':
return(umatch(s, ++p));
case 0:
return(!scc);
}
if (c==scc) goto caseq;
return(0);
}
static umatch(s, p)
char *s, *p;
{
if(*p==0) return(1);
while(*s)
if (amatch(s++,p)) return(1);
return(0);
}
#ifdef METERFILE
#include <pwd.h>
int meteron = 0; /* default: metering off */
meter(file)
char *file;
{
TIMETYPE tvec;
char *p, *ctime();
FILE * mout;
struct passwd *pwd, *getpwuid();
if(file==0 || meteron==0) return;
pwd = getpwuid(getuid());
time(&tvec);
if( (mout=fopen(file,"a")) != NULL )
{
p = ctime(&tvec);
p[16] = '\0';
fprintf(mout,"User %s, %s\n",pwd->pw_name,p+4);
fclose(mout);
}
}
#endif
/* look inside archives for notations a(b) and a((b))
a(b) is file member b in archive a
a((b)) is entry point _b in object archive a
*/
#ifdef ASCARCH
# include <ar.h>
#else
# include <ar.h>
#endif
#include <a.out.h>
static long arflen;
static long arfdate;
static char arfname[16];
FILE *arfd;
long int arpos, arlen;
static struct exec objhead;
static struct nlist objentry;
TIMETYPE lookarch(filename)
char *filename;
{
char *p, *q, *send, s[MAXNAMLEN + 1];
int i, nc, nsym, objarch;
for(p = filename; *p!= '(' ; ++p)
;
*p = '\0';
openarch(filename);
*p++ = '(';
if(*p == '(')
{
objarch = YES;
nc = 8;
++p;
}
else
{
objarch = NO;
nc = MAXNAMLEN;
}
send = s + nc;
for( q = s ; q<send && *p!='\0' && *p!=')' ; *q++ = *p++ )
;
while(q < send)
*q++ = '\0';
while(getarch())
{
if(objarch)
{
getobj();
nsym = objhead.a_syms / sizeof(objentry);
for(i = 0; i<nsym ; ++i)
{
fread( (char *) &objentry, sizeof(objentry),1,arfd);
if( (objentry.n_type & N_EXT)
&& ((objentry.n_type & ~N_EXT) || objentry.n_value)
&& eqstr(objentry.n_un.n_name,s,nc))
{
clarch();
return(arfdate);
}
}
}
else if( eqstr(arfname, s, nc))
{
clarch();
return(arfdate);
}
}
clarch();
return( 0L);
}
clarch()
{
fclose( arfd );
}
openarch(f)
register char *f;
{
#ifdef ASCARCH
char magic[SARMAG];
#endif
int word;
struct stat buf;
stat(f, &buf);
arlen = buf.st_size;
arfd = fopen(f, "r");
if(arfd == NULL)
fatal1("cannot open %s", f);
fread( (char *) &word, sizeof(word), 1, arfd);
#ifdef ASCARCH
fseek(arfd, 0L, 0);
fread(magic, SARMAG, 1, arfd);
arpos = SARMAG;
if( ! eqstr(magic, ARMAG, SARMAG) )
#else
arpos = sizeof(word);
if(word != ARMAG)
#endif
fatal1("%s is not an archive", f);
arflen = 0;
}
getarch()
{
struct ar_hdr arhead;
long atol();
arpos += (arflen + 1) & ~1L; /* round archived file length up to even */
if(arpos >= arlen)
return(0);
fseek(arfd, arpos, 0);
fread( (char *) &arhead, sizeof(arhead), 1, arfd);
arpos += sizeof(arhead);
#ifdef ASCARCH
arflen = atol(arhead.ar_size);
arfdate = atol(arhead.ar_date);
#else
arflen = arhead.ar_size;
arfdate = arhead.ar_date;
#endif
strncpy(arfname, arhead.ar_name, sizeof(arhead.ar_name));
return(1);
}
getobj()
{
long int skip;
fread( (char *) &objhead, sizeof(objhead), 1, arfd);
if (N_BADMAG(objhead))
fatal1("%s is not an object module", arfname);
skip = objhead.a_text + objhead.a_data;
#ifndef pdp11
skip += objhead.a_trsize + objhead.a_drsize;
#else
if(! objhead.a_flag )
skip *= 2;
#endif
fseek(arfd, skip, 1);
}
eqstr(a,b,n)
register char *a, *b;
int n;
{
register int i;
for(i = 0 ; i < n ; ++i)
if(*a++ != *b++)
return(NO);
return(YES);
}
/*
* findfl(name) (like execvp, but does path search and finds files)
*/
static char fname[128];
char *execat();
char *findfl(name)
register char *name;
{
register char *p;
register struct varblock *cp;
struct stat buf;
struct varblock *varptr();
for (p = name; *p; p++)
if(*p == '/') return(name);
cp = varptr("VPATH");
if(cp->varval == NULL || *cp->varval == 0)
p = ":";
else
p = cp->varval;
do
{
p = execat(p, name, fname);
if(stat(fname,&buf) >= 0)
return(fname);
} while (p);
return((char *)-1);
}
char *execat(s1, s2, si)
register char *s1, *s2;
char *si;
{
register char *s;
s = si;
while (*s1 && *s1 != ':' && *s1 != '-')
*s++ = *s1++;
if (si != s)
*s++ = '/';
while (*s2)
*s++ = *s2++;
*s = '\0';
return(*s1? ++s1: 0);
}
/* copy s to d, changing file names to file aliases */
fixname(s, d)
char *s, *d;
{
register char *r, *q;
struct nameblock *pn;
char name[BUFSIZ];
while (*s) {
if (isspace(*s)) *d++ = *s++;
else {
r = name;
while (*s) {
if (isspace(*s)) break;
*r++ = *s++;
}
*r = '\0';
if (((pn = srchname(name)) != 0) && (pn->alias))
q = pn->alias;
else q = name;
while (*q) *d++ = *q++;
}
}
*d = '\0';
}