home *** CD-ROM | disk | FTP | other *** search
- #include "sys/types.h"
- #ifndef MSDOS
- #include "sys/stat.h"
- #endif
- #include "f2c.h"
- #include "fio.h"
- #include "string.h"
- #include "fcntl.h"
- #ifndef O_WRONLY
- #define O_RDONLY 0
- #define O_WRONLY 1
- #endif
-
- extern char *malloc(), *mktemp();
- extern FILE *fdopen();
- extern integer f_clos();
-
- integer f_open(a) olist *a;
- { unit *b;
- int n;
- char buf[256];
- cllist x;
- #ifndef MSDOS
- struct stat stb;
- #endif
- if(a->ounit>=MXUNIT || a->ounit<0)
- err(a->oerr,101,"open")
- curunit = b = &units[a->ounit];
- if(b->ufd) {
- if(a->ofnm==0)
- {
- same: if (a->oblnk)
- b->ublnk = *a->oblnk == 'z' || *a->oblnk == 'Z';
- return(0);
- }
- #ifdef MSDOS
- if (b->ufnm
- && strlen(b->ufnm) == a->ofnmlen
- && !strncmp(b->ufnm, b->ufnm, (unsigned)a->ofnmlen))
- goto same;
- #else
- g_char(a->ofnm,a->ofnmlen,buf);
- if (inode(buf,&n) == b->uinode && n == b->udev)
- goto same;
- #endif
- x.cunit=a->ounit;
- x.csta=0;
- x.cerr=a->oerr;
- if((n=f_clos(&x))!=0) return(n);
- }
- b->url=a->orl;
- b->ublnk = a->oblnk && (*a->oblnk == 'z' || *a->oblnk == 'Z');
- if(a->ofm==0)
- { if(b->url>0) b->ufmt=0;
- else b->ufmt=1;
- }
- else if(*a->ofm=='f' || *a->ofm == 'F') b->ufmt=1;
- else b->ufmt=0;
- #ifdef url_Adjust
- if (b->url && !b->ufmt)
- url_Adjust(b->url);
- #endif
- if (a->ofnm) {
- g_char(a->ofnm,a->ofnmlen,buf);
- if (!buf[0])
- err(a->oerr,107,"open")
- }
- else
- sprintf(buf, "fort.%ld", a->ounit);
- b->uscrtch = 0;
- switch(a->osta ? *a->osta : 'u')
- {
- case 'o':
- case 'O':
- #ifdef MSDOS
- if(access(buf,0))
- #else
- if(stat(buf,&stb))
- #endif
- err(a->oerr,errno,"open")
- break;
- case 's':
- case 'S':
- b->uscrtch=1;
- (void) strcpy(buf,"FXXXXXX.tmp");
- (void) mktemp(buf);
- (void) close(creat(buf, 0666));
- break;
- case 'n':
- case 'N':
- #ifdef MSDOS
- if(!access(buf,0))
- #else
- if(!stat(buf,&stb))
- #endif
- err(a->oerr,128,"open")
- /* no break */
- case 'r': /* Fortran 90 replace option */
- case 'R':
- (void) close(creat(buf, 0666));
- break;
- }
-
- b->ufnm=(char *) malloc((unsigned int)(strlen(buf)+1));
- if(b->ufnm==NULL) err(a->oerr,113,"no space");
- (void) strcpy(b->ufnm,buf);
- b->uend=0;
- b->uwrt = 0;
- if(isdev(buf))
- { b->ufd = fopen(buf,"r");
- if(b->ufd==NULL) err(a->oerr,errno,buf)
- }
- else {
- if((b->ufd = fopen(buf, "r")) == NULL) {
- if ((n = open(buf,O_WRONLY)) >= 0) {
- b->uwrt = 2;
- }
- else {
- n = creat(buf, 0666);
- b->uwrt = 1;
- }
- if (n < 0
- || (b->ufd = fdopen(n, "w")) == NULL)
- err(a->oerr, errno, "open");
- }
- }
- b->useek=canseek(b->ufd);
- #ifndef MSDOS
- if((b->uinode=inode(buf,&b->udev))==-1)
- err(a->oerr,108,"open")
- #endif
- if(a->orl && b->useek) rewind(b->ufd);
- return(0);
- }
- fk_open(seq,fmt,n) ftnint n;
- { char nbuf[10];
- olist a;
- (void) sprintf(nbuf,"fort.%ld",n);
- a.oerr=1;
- a.ounit=n;
- a.ofnm=nbuf;
- a.ofnmlen=strlen(nbuf);
- a.osta=NULL;
- a.oacc= seq==SEQ?"s":"d";
- a.ofm = fmt==FMT?"f":"u";
- a.orl = seq==DIR?1:0;
- a.oblnk=NULL;
- return(f_open(&a));
- }
- isdev(s) char *s;
- {
- #ifdef MSDOS
- int i, j;
-
- i = open(s,O_RDONLY);
- if (i == -1)
- return 0;
- j = isatty(i);
- close(i);
- return j;
- #else
- struct stat x;
-
- if(stat(s, &x) == -1) return(0);
- #ifdef S_IFMT
- switch(x.st_mode&S_IFMT) {
- case S_IFREG:
- case S_IFDIR:
- return(0);
- }
- #else
- #ifdef S_ISREG
- /* POSIX version */
- if(S_ISREG(x.st_mode) || S_ISDIR(x.st_mode))
- return(0);
- else
- #else
- Help! How does stat work on this system?
- #endif
- #endif
- return(1);
- #endif
- }
-