V10/cmd/make/doname.c
static char *sccsid = "@(#)doname.c 8th edition (Bell Labs) 85/07/16";
#include "defs"
/* BASIC PROCEDURE. RECURSIVE. */
/*
p->done = 0 don't know what to do yet
p->done = 1 file in process of being updated
p->done = 2 file already exists in current state
p->done = 3 file make failed
*/
doname(p, reclevel, tval, nowait)
register nameblkp p;
int reclevel;
TIMETYPE *tval;
int nowait;
{
int errstat;
int okdel1;
int didwork;
int len;
TIMETYPE td, td1, tdep, ptime, ptime1, prestime();
register depblkp q;
depblkp qtemp, srchdir(), suffp, suffp1;
nameblkp p1, p2, chkname();
struct shblock *implcom, *explcom;
register lineblkp lp;
lineblkp lp1, lp2;
char sourcename[100], prefix[100], temp[100], concsuff[20];
char *wildsub(), *wildmatch(), *stem;
char *pnamep, *p1namep;
char *mkqlist();
chainp allchain, qchain, appendq();
char qbuf[QBUFMAX], tgsbuf[QBUFMAX];
wildp wp;
int nproc1;
char *lastslash, *s;
if(p == 0)
{
*tval = 0;
return 0;
}
if(dbgflag)
{
printf("doname(%s,%d)\n",p->namep,reclevel);
fflush(stdout);
}
if(p->done > 0)
{
*tval = p->modtime;
return (p->done == 3);
}
errstat = 0;
tdep = 0;
implcom = 0;
explcom = 0;
ptime = exists(p->namep);
ptime1 = 0;
didwork = NO;
p->done = 1; /* avoid infinite loops */
nproc1 = nproc; /* current depth of process stack */
qchain = NULL;
allchain = NULL;
/* define values of Bradford's $$@ and $$/ macros */
for(s = lastslash = p->namep; *s; ++s)
if(*s == '/')
lastslash = s;
setvar("$@", p->namep, YES);
setvar("$/", lastslash, YES);
/* expand any names that have embedded metacharacters */
for(lp = p->linep ; lp ; lp = lp->nxtlineblock)
for(q = lp->depp ; q ; q=qtemp )
{
qtemp = q->nxtdepblock;
expand(q);
}
/* make sure all dependents are up to date */
for(lp = p->linep ; lp ; lp = lp->nxtlineblock)
{
td = 0;
for(q = lp->depp ; q ; q = q->nxtdepblock)
if(q->depname)
{
errstat += doname(q->depname, reclevel+1, &td1, q->nowait);
if(dbgflag)
printf("TIME(%s)=%ld\n",q->depname->namep, td1);
if(td1 > td)
td = td1;
if(ptime < td1)
qchain = appendq(qchain, q->depname->namep);
allchain = appendq(allchain, q->depname->namep);
}
if(p->septype == SOMEDEPS)
{
if(lp->shp)
if( ptime<td || (ptime==0 && td==0) || lp->depp==0)
{
okdel1 = okdel;
okdel = NO;
set3var("@", p->namep);
setvar("?", mkqlist(qchain,qbuf), YES);
setvar("^", mkqlist(allchain,tgsbuf), YES);
qchain = NULL;
if( !questflag )
errstat += docom(lp->shp, nowait, nproc1);
set3var("@", CHNULL);
okdel = okdel1;
ptime1 = prestime();
didwork = YES;
}
}
else {
if(lp->shp != 0)
{
if(explcom)
fprintf(stderr, "Too many command lines for `%s'\n",
p->namep);
else explcom = lp->shp;
}
if(td > tdep) tdep = td;
}
}
/* Look for implicit dependents, using suffix rules */
for(lp = sufflist ; lp ; lp = lp->nxtlineblock)
for(suffp = lp->depp ; suffp ; suffp = suffp->nxtdepblock)
{
pnamep = suffp->depname->namep;
if(suffix(p->namep , pnamep , prefix))
{
(void)srchdir(concat(prefix,"*",temp), NO, (depblkp) NULL);
for(lp1 = sufflist ; lp1 ; lp1 = lp1->nxtlineblock)
for(suffp1=lp1->depp; suffp1 ; suffp1 = suffp1->nxtdepblock)
{
p1namep = suffp1->depname->namep;
if( (p1=srchname(concat(p1namep, pnamep ,concsuff))) &&
(p2=srchname(concat(prefix, p1namep ,sourcename))) )
{
errstat += doname(p2, reclevel+1, &td, NO);
if(ptime < td)
qchain = appendq(qchain, p2->namep);
if(dbgflag) printf("TIME(%s)=%ld\n", p2->namep, td);
if(td > tdep) tdep = td;
set3var("*", prefix);
set3var("<", copys(sourcename));
for(lp2=p1->linep ; lp2 ; lp2 = lp2->nxtlineblock)
if(implcom = lp2->shp) break;
goto endloop;
}
}
}
}
/* Look for implicit dependents, using pattern matching rules */
len = strlen(p->namep);
for(wp = firstwild ; wp ; wp = wp->next)
if(stem = wildmatch(wp, p->namep, len) )
{
lp = wp->linep;
for(q = lp->depp; q; q = q->nxtdepblock)
{
if(dbgflag>1 && q->depname)
fprintf(stderr,"check dep of %s on %s\n", p->namep,
wildsub(q->depname->namep,stem));
if(q->depname &&
! chkname(wildsub(q->depname->namep,stem)))
break;
}
if(q) /* some name not found, go to next line */
continue;
for(q = lp->depp; q; q = q->nxtdepblock)
{
nameblkp tamep;
if(q->depname == NULL)
continue;
tamep = srchname( wildsub(q->depname->namep,stem));
/*TEMP fprintf(stderr,"check dep %s on %s =>%s\n",p->namep,q->depname->namep,tamep->namep);*/
/*TEMP*/if(dbgflag) printf("%s depends on %s. stem=%s\n", p->namep,tamep->namep, stem);
errstat += doname(tamep, reclevel+1, &td, q->nowait);
if(ptime < td)
qchain = appendq(qchain, tamep->namep);
allchain = appendq(allchain, tamep->namep);
if(dbgflag) printf("TIME(%s)=%ld\n", tamep->namep, td);
if(td > tdep)
tdep = td;
set3var("<", copys(tamep->namep) );
}
set3var("*", stem);
setvar("%", stem, YES);
implcom = lp->shp;
goto endloop;
}
endloop:
if(errstat==0 && (ptime<tdep || (ptime==0 && tdep==0) ) )
{
ptime = (tdep>0 ? tdep : prestime() );
set3var("@", p->namep);
setvar("?", mkqlist(qchain,qbuf), YES);
setvar("^", mkqlist(allchain,tgsbuf), YES);
if(explcom)
errstat += docom(explcom, nowait, nproc1);
else if(implcom)
errstat += docom(implcom, nowait, nproc1);
else if(p->septype == 0)
if(p1=srchname(".DEFAULT"))
{
set3var("<", p->namep);
for(lp2 = p1->linep ; lp2 ; lp2 = lp2->nxtlineblock)
if(implcom = lp2->shp)
{
errstat += docom(implcom, nowait,nproc1);
break;
}
}
else if(keepgoing)
{
printf("Don't know how to make %s\n", p->namep);
++errstat;
}
else
fatal1(" Don't know how to make %s", p->namep);
set3var("@", CHNULL);
if(noexflag || nowait || (ptime = exists(p->namep)) == 0 )
ptime = prestime();
}
else if(errstat!=0 && reclevel==0)
printf("`%s' not remade because of errors\n", p->namep);
else if(!questflag && reclevel==0 && didwork==NO)
printf("`%s' is up to date.\n", p->namep);
if(questflag && reclevel==0)
exit(ndocoms>0 ? -1 : 0);
p->done = (errstat ? 3 : 2);
if(ptime1 > ptime)
ptime = ptime1;
p->modtime = ptime;
*tval = ptime;
return errstat;
}
docom(q, nowait, nproc1)
struct shblock *q;
int nowait;
int nproc1;
{
char *s;
struct varblock *varptr();
int ign, nopr, doit;
char string[OUTMAX];
++ndocoms;
if(questflag)
return NO;
if(touchflag)
{
s = varptr("@")->varval;
if(!silflag)
printf("touch(%s)\n", s);
if(!noexflag)
touch(YES, s);
return NO;
}
if(nproc1 < nproc)
waitstack(nproc1);
for( ; q ; q = q->nxtshblock )
{
subst(q->shbp,string);
ign = ignerr;
nopr = NO;
doit = NO;
for(s = string ; ; ++s)
{
switch(*s)
{
case '-':
ign = YES;
continue;
case '@':
nopr = YES;
continue;
case '+':
doit = YES;
continue;
default:
break;
}
break;
}
if( docom1(s, ign, nopr, doit||!noexflag, nowait&&!q->nxtshblock) && !ign)
return YES;
}
return NO;
}
docom1(comstring, nohalt, noprint, doit, nowait)
register char *comstring;
int nohalt, noprint, doit, nowait;
{
register int status;
char *prefix;
if(comstring[0] == '\0')
return 0;
if(!silflag && (!noprint || !doit) )
prefix = doit ? prompt : "" ;
else
prefix = CHNULL;
if(dynmacro(comstring) || !doit)
{
if(prefix)
{
fputs(prefix, stdout);
puts(comstring); /* with a newline */
fflush(stdout);
}
return 0;
}
status = dosys(comstring, nohalt, nowait, prefix);
baddirs(); /* directories may have changed */
return status;
}
/*
If there are any Shell meta characters in the name,
expand into a list, after searching directory
*/
expand(q)
register depblkp q;
{
register char *s;
char *s1;
depblkp p, srchdir();
s1 = q->depname->namep;
for(s=s1 ; ;) switch(*s++)
{
case '\0':
return;
case '*':
case '?':
case '[':
if( p = srchdir(s1 , YES, q->nxtdepblock) )
{
q->nxtdepblock = p;
q->depname = 0;
}
return;
}
}