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BSD 4_2 release
[unix-history] / usr / src / new / new / apl / src / aplcvt.c
static char Sccsid[] = "aplcvt.c @(#)aplcvt.c 1.2 10/1/82 Berkeley ";
#
/*
* aplcvt - convert APL workspace to/from VAX format
*/
#include <stdio.h>
#define PDPMAGIC 0100554 /* PDP-11 magic number */
#define VAXMAGIC 0100556 /* VAX magic number */
#define DA 1 /* data type */
#define NF 8 /* niladic function type */
#define MF 9 /* monadic function type */
#define DF 10 /* dyadic function type */
#define MRANK 8 /* maximum rank */
/*
* The following define the internal data structures for APL
* on both the PDP-11 and the VAX. Two short integers are
* used instead of a long integer for the VAX definitions so
* that the program can be compiled and run on either machine
* without changes. (Otherwise, the reversal of long integers
* between the two machines would cause problems.)
*/
struct pdp_thread {
double pt_fuzz;
short pt_iorg;
short pt_rl;
short pt_digits;
short pt_width;
} pthread;
#define PTSIZE 14 /* its real size, not the sizeof */
struct vax_thread {
double vt_fuzz;
short vt_iorg[2];
short vt_rl[2];
short vt_digits[2];
short vt_width[2];
} vthread;
struct pdp_item {
char pi_rank;
char pi_type;
short pi_size;
short pi_index;
short pi_datap; /* really a 16-bit pointer */
short pi_dim[MRANK];
} pitem;
struct vax_item {
char vi_rank;
char vi_type;
char vi_pad[2];
short vi_size[2];
short vi_index[2];
short vi_datap[2]; /* really a 32-bit pointer */
short vi_dim[MRANK][2]; /* array of 32-bit integers */
} vitem;
union uci {
char cv[4];
unsigned short s;
};
#define eperror(x,y) {eprintf(x); perror(y);}
char *base(), *strcpy(), *strcmp();
#ifdef vax
int makevax = 1; /* by default, convert to VAX format */
#else
int makevax = 0; /* by default, convert to PDP format */
#endif
char *pname; /* holds argv[0] */
char *ifname; /* points to input file name */
char ofname[128]; /* contains output file name */
main(argc, argv)
char **argv;
{
register FILE *ifp, *ofp;
register char **ap;
/* Parse the arguments */
pname = *argv;
ap = argv+1;
if (argc > 1 && *argv[1] == '-'){
switch(argv[1][1]){
case 'v':
case 'p':
makevax = (argv[1][1] == 'v');
break;
default:
eprintf("unknown flag \"%s\"\n", argv[1]);
exit(1);
}
ap++;
}
/* If there are no filename arguments, convert standard
* input to standard output. However, if one of these is
* a tty, just exit with a syntax error message (it is highly
* unlikely that the user wanted input or output from/to his
* tty.
*
* If there are filenames, convert each one.
*/
if (!*ap){
if(isatty(0) || isatty(1)){
fprintf(stderr, "Syntax: \"%s [-v|-p] filename ...\"\n",
pname);
exit(1);
}
ifname = "<stdin>";
strcpy(ofname, "<stdout>");
if (makevax ? tovax(stdin,stdout) : topdp(stdin,stdout)){
eprintf("don't trust the output file!\n");
exit(1);
}
} else
for(; *ap; ap++){
ifname = *ap;
if ((ifp=fopen(ifname, "r")) == NULL){
eperror("can't open ", ifname);
continue;
}
strcat(strcpy(ofname,base(ifname)),
makevax ? ".vax" : ".pdp");
if ((ofp=fopen(ofname, "w")) == NULL){
eperror("can't create ", ofname);
fclose(ifp);
continue;
}
if (makevax ? tovax(ifp,ofp) : topdp(ifp,ofp))
if (unlink(ofname) < 0)
eperror("unlink ", ofname);
fclose(ifp);
fclose(ofp);
}
exit(0);
}
char *
base(s)
register char *s;
{
static char basename[128];
register char *p;
/* Strip off a trailing ".pdp" or ".vax" (depending upon the
* direction of conversion.
*/
for(p=basename; *p = *s; p++,s++)
if (*s == '.' && !strcmp(s+1, makevax ? "pdp" : "vax")){
*p = '\0';
break;
}
return(basename);
}
topdp(ifp, ofp)
FILE *ifp, *ofp;
{
unsigned short magic;
short nsz;
union uci iz;
char name[128];
register c;
register j;
/* Look for proper magic number */
if (fread(&magic, sizeof magic, 1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
if ((magic|1) != (VAXMAGIC|1)){
eprintf("%s is not a VAX APL workspace\n", ifname);
return(-1);
}
if (fread(&magic, sizeof magic, 1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
if (magic){
eprintf("warning: %s may be corrupted\n", ifname);
eprintf("attempting to continue\n");
}
magic = (magic&1) | PDPMAGIC;
if (fwrite(&magic, sizeof magic, 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
/* Convert the "thread" structure */
if (fread(&vthread, sizeof vthread, 1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
pthread.pt_fuzz = vthread.vt_fuzz;
pthread.pt_iorg = vthread.vt_iorg[0];
pthread.pt_rl = vthread.vt_rl[0];
pthread.pt_digits = vthread.vt_digits[0];
pthread.pt_width = vthread.vt_width[0];
if (fwrite(&pthread, PTSIZE, 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
/* Convert each data item or function */
loop:
if ((j=fread(&iz, sizeof(long), 1, ifp)) != 1)
if (j <= 0)
return(0);
else {
eperror("read error on ", ifname);
return(-1);
}
if (fwrite(&iz, sizeof(short), 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
if (fread(name, sizeof(char), (unsigned)iz.cv[1], ifp) != iz.cv[1]){
eperror("read error on ", ifname);
return(-1);
}
if (fwrite(name, sizeof(char), (unsigned)iz.cv[1], ofp) != iz.cv[1]){
eperror("write error on ", ofname);
return(-1);
}
switch(iz.cv[0]){
default:
eprintf("unknown item, type = %d\n", iz.cv[0]);
eprintf("conversion aborted\n");
return(-1);
case NF:
case MF:
case DF:
do {
if ((c=getc(ifp)) == EOF){
eperror("getc error on ", ifname);
return(-1);
}
putc(c, ofp);
} while (c);
break;
case DA:
if (fread(&iz, sizeof(long), 1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
if (iz.cv[2] | iz.cv[3]){
eprintf("item %s too large -- aborting\n", name);
return(-1);
}
if (fread(&vitem, sizeof vitem - MRANK*sizeof(long),
1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
if (fread(vitem.vi_dim, sizeof(long), vitem.vi_rank, ifp)
!= vitem.vi_rank){
eperror("read error on ", ifname);
return(-1);
}
pitem.pi_rank = vitem.vi_rank;
pitem.pi_type = vitem.vi_type;
pitem.pi_size = vitem.vi_size[0];
for(j=0; j<vitem.vi_rank; j++)
pitem.pi_dim[j] = vitem.vi_dim[j][0];
nsz = sizeof pitem - (MRANK-pitem.pi_rank)*sizeof(short)
- sizeof vitem + (MRANK-vitem.vi_rank)*sizeof(long)
+ iz.s;
if (fwrite(&nsz, sizeof nsz, 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
j = sizeof pitem - (MRANK-pitem.pi_rank)*sizeof(short);
if (fwrite(&pitem, j, 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
j = sizeof vitem - (MRANK-vitem.vi_rank)*sizeof(long);
if (copy(ifp, ofp, iz.s-j))
return(-1);
}
goto loop; /* should be while(1) */
}
tovax(ifp, ofp)
FILE *ifp, *ofp;
{
unsigned short magic;
static short zero = 0;
short nsz;
union uci iz;
char name[128];
register c;
register j;
/* Look for proper magic number. */
if (fread(&magic, sizeof magic, 1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
if ((magic|1) != (PDPMAGIC|1)){
eprintf("%s is not a PDP-11 APL workspace\n", ifname);
return(-1);
}
magic = (magic&1) | VAXMAGIC;
if (fwrite(&magic, sizeof magic, 1, ofp) != 1
|| fwrite(&zero, sizeof zero, 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
/* Convert the "thread" structure. */
if (fread(&pthread, PTSIZE, 1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
vthread.vt_fuzz = pthread.pt_fuzz;
vthread.vt_iorg[0] = pthread.pt_iorg;
vthread.vt_iorg[1] = 0;
vthread.vt_rl[0] = pthread.pt_rl;
vthread.vt_rl[1] = 0;
vthread.vt_digits[0] = pthread.pt_digits;
vthread.vt_digits[1] = 0;
vthread.vt_width[0] = pthread.pt_width;
vthread.vt_width[1] = 0;
if (fwrite(&vthread, sizeof vthread, 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
/* Convert each data item or function. */
loop:
if ((j=fread(&iz, sizeof(short), 1, ifp)) != 1)
if (j <= 0)
return(0);
else {
eperror("read error on ", ifname);
return(-1);
}
iz.cv[2] = iz.cv[3] = 0;
if (fwrite(&iz, sizeof(long), 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
if (fread(name, sizeof(char), (unsigned)iz.cv[1], ifp) != iz.cv[1]){
eperror("read error on ", ifname);
return(-1);
}
if (fwrite(name, sizeof(char), (unsigned)iz.cv[1], ofp) != iz.cv[1]){
eperror("write error on ", ofname);
return(-1);
}
switch(iz.cv[0]){
default:
eprintf("unknown item, type = %d\n", iz.cv[0]);
eprintf("conversion aborted\n");
return(-1);
case NF:
case MF:
case DF:
do {
if ((c=getc(ifp)) == EOF){
eperror("getc error on ", ifname);
return(-1);
}
putc(c, ofp);
} while (c);
break;
case DA:
if (fread(&iz, sizeof(short), 1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
if (fread(&pitem, sizeof pitem - MRANK*sizeof(short),
1, ifp) != 1){
eperror("read error on ", ifname);
return(-1);
}
if (fread(pitem.pi_dim, sizeof(short), pitem.pi_rank, ifp)
!= pitem.pi_rank){
eperror("read error on ", ifname);
return(-1);
}
vitem.vi_rank = pitem.pi_rank;
vitem.vi_type = pitem.pi_type;
vitem.vi_size[0] = pitem.pi_size;
vitem.vi_size[1] = 0;
for(j=0; j<pitem.pi_rank; j++){
vitem.vi_dim[j][0] = pitem.pi_dim[j];
vitem.vi_dim[j][1] = 0;
}
nsz = sizeof vitem - (MRANK-vitem.vi_rank)*sizeof(long)
- sizeof pitem + (MRANK-pitem.pi_rank)*sizeof(short)
+ iz.s;
if (fwrite(&nsz, sizeof nsz, 1, ofp) != 1
|| fwrite(&zero, sizeof zero, 1, ofp) != 1){
perror("write error on ", ofname);
return(-1);
}
j = sizeof vitem - (MRANK-vitem.vi_rank)*sizeof(long);
if (fwrite(&vitem, j, 1, ofp) != 1){
eperror("write error on ", ofname);
return(-1);
}
j = sizeof pitem - (MRANK-pitem.pi_rank)*sizeof(short);
if (copy(ifp, ofp, iz.s-j))
return(-1);
}
goto loop; /* should be while(1) */
}
copy(ifp, ofp, len)
FILE *ifp, *ofp;
register len;
{
register c;
while(len--){
if ((c=getc(ifp)) == EOF){
eperror("getc error on ", ifname);
return(-1);
}
putc(c, ofp);
}
return(0);
}
/*VARARGS 1*/
eprintf(a, b, c, d, e, f, g, h, i, j){
fprintf(stderr, "%s: ", pname);
fprintf(stderr, a, b, c, d, e, f, g, h, i, j);
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.