| #include "config.h" |
| #include "f2c.h" |
| #include "fio.h" |
| #include <string.h> |
| #ifndef NON_POSIX_STDIO |
| #ifdef MSDOS |
| #include "io.h" |
| #else |
| #include "unistd.h" /* for access */ |
| #endif |
| #endif |
| |
| #undef abs |
| #undef min |
| #undef max |
| #include <stdlib.h> |
| extern int f__canseek (FILE *); |
| extern integer f_clos (cllist *); |
| |
| #ifdef NON_ANSI_RW_MODES |
| char *f__r_mode[2] = { "r", "r" }; |
| char *f__w_mode[4] = { "w", "w", "r+w", "r+w" }; |
| #else |
| char *f__r_mode[2] = { "rb", "r" }; |
| char *f__w_mode[4] = { "wb", "w", "r+b", "r+" }; |
| #endif |
| |
| static char f__buf0[400], *f__buf = f__buf0; |
| int f__buflen = (int) sizeof (f__buf0); |
| |
| static void |
| f__bufadj (int n, int c) |
| { |
| unsigned int len; |
| char *nbuf, *s, *t, *te; |
| |
| if (f__buf == f__buf0) |
| f__buflen = 1024; |
| while (f__buflen <= n) |
| f__buflen <<= 1; |
| len = (unsigned int) f__buflen; |
| if (len != f__buflen || !(nbuf = (char *) malloc (len))) |
| f__fatal (113, "malloc failure"); |
| s = nbuf; |
| t = f__buf; |
| te = t + c; |
| while (t < te) |
| *s++ = *t++; |
| if (f__buf != f__buf0) |
| free (f__buf); |
| f__buf = nbuf; |
| } |
| |
| int |
| f__putbuf (int c) |
| { |
| char *s, *se; |
| int n; |
| |
| if (f__hiwater > f__recpos) |
| f__recpos = f__hiwater; |
| n = f__recpos + 1; |
| if (n >= f__buflen) |
| f__bufadj (n, f__recpos); |
| s = f__buf; |
| se = s + f__recpos; |
| if (c) |
| *se++ = c; |
| *se = 0; |
| for (;;) |
| { |
| fputs (s, f__cf); |
| s += strlen (s); |
| if (s >= se) |
| break; /* normally happens the first time */ |
| putc (*s++, f__cf); |
| } |
| return 0; |
| } |
| |
| void |
| x_putc (int c) |
| { |
| if (f__recpos >= f__buflen) |
| f__bufadj (f__recpos, f__buflen); |
| f__buf[f__recpos++] = c; |
| } |
| |
| #define opnerr(f,m,s) \ |
| do {if(f) {f__init &= ~2; errno= m;} else opn_err(m,s,a); return(m);} while(0) |
| |
| static void |
| opn_err (int m, char *s, olist * a) |
| { |
| if (a->ofnm) |
| { |
| /* supply file name to error message */ |
| if (a->ofnmlen >= f__buflen) |
| f__bufadj ((int) a->ofnmlen, 0); |
| g_char (a->ofnm, a->ofnmlen, f__curunit->ufnm = f__buf); |
| } |
| f__fatal (m, s); |
| } |
| |
| integer |
| f_open (olist * a) |
| { |
| unit *b; |
| integer rv; |
| char buf[256], *s, *env; |
| cllist x; |
| int ufmt; |
| FILE *tf; |
| int fd, len; |
| #ifndef NON_UNIX_STDIO |
| int n; |
| #endif |
| if (f__init != 1) |
| f_init (); |
| f__external = 1; |
| if (a->ounit >= MXUNIT || a->ounit < 0) |
| err (a->oerr, 101, "open"); |
| f__curunit = b = &f__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 NON_UNIX_STDIO |
| if (b->ufnm |
| && strlen (b->ufnm) == a->ofnmlen |
| && !strncmp (b->ufnm, a->ofnm, (unsigned) a->ofnmlen)) |
| goto same; |
| #else |
| g_char (a->ofnm, a->ofnmlen, buf); |
| if (f__inode (buf, &n) == b->uinode && n == b->udev) |
| goto same; |
| #endif |
| x.cunit = a->ounit; |
| x.csta = 0; |
| x.cerr = a->oerr; |
| if ((rv = f_clos (&x)) != 0) |
| return rv; |
| } |
| b->url = (int) a->orl; |
| b->ublnk = a->oblnk && (*a->oblnk == 'z' || *a->oblnk == 'Z'); |
| if (a->ofm == 0) |
| if ((a->oacc) && (*a->oacc == 'D' || *a->oacc == 'd')) |
| b->ufmt = 0; |
| else |
| b->ufmt = 1; |
| else if (*a->ofm == 'f' || *a->ofm == 'F') |
| b->ufmt = 1; |
| else |
| b->ufmt = 0; |
| ufmt = b->ufmt; |
| #ifdef url_Adjust |
| if (b->url && !ufmt) |
| url_Adjust (b->url); |
| #endif |
| if (a->ofnm) |
| { |
| g_char (a->ofnm, a->ofnmlen, buf); |
| if (!buf[0]) |
| opnerr (a->oerr, 107, "open"); |
| } |
| else |
| sprintf (buf, "fort.%ld", (long) a->ounit); |
| b->uscrtch = 0; |
| b->uend = 0; |
| b->uwrt = 0; |
| b->ufd = 0; |
| b->urw = 3; |
| switch (a->osta ? *a->osta : 'u') |
| { |
| case 'o': |
| case 'O': |
| #ifdef NON_POSIX_STDIO |
| if (!(tf = fopen (buf, "r"))) |
| opnerr (a->oerr, errno, "open"); |
| fclose (tf); |
| #else |
| if (access (buf, 0)) |
| opnerr (a->oerr, errno, "open"); |
| #endif |
| break; |
| case 's': |
| case 'S': |
| b->uscrtch = 1; |
| #ifdef HAVE_MKSTEMP /* Allow use of TMPDIR preferentially. */ |
| env = getenv ("TMPDIR"); |
| if (!env) |
| env = getenv ("TEMP"); |
| if (!env) |
| env = "/tmp"; |
| len = strlen (env); |
| if (len > 256 - (int) sizeof ("/tmp.FXXXXXX")) |
| err (a->oerr, 132, "open"); |
| strcpy (buf, env); |
| strcat (buf, "/tmp.FXXXXXX"); |
| fd = mkstemp (buf); |
| if (fd == -1 || close (fd)) |
| err (a->oerr, 132, "open"); |
| #else /* ! defined (HAVE_MKSTEMP) */ |
| #ifdef HAVE_TEMPNAM /* Allow use of TMPDIR preferentially. */ |
| s = tempnam (0, buf); |
| if (strlen (s) >= sizeof (buf)) |
| err (a->oerr, 132, "open"); |
| (void) strcpy (buf, s); |
| free (s); |
| #else /* ! defined (HAVE_TEMPNAM) */ |
| #ifdef HAVE_TMPNAM |
| tmpnam (buf); |
| #else |
| (void) strcpy (buf, "tmp.FXXXXXX"); |
| (void) mktemp (buf); |
| #endif |
| #endif /* ! defined (HAVE_TEMPNAM) */ |
| #endif /* ! defined (HAVE_MKSTEMP) */ |
| goto replace; |
| case 'n': |
| case 'N': |
| #ifdef NON_POSIX_STDIO |
| if ((tf = fopen (buf, "r")) || (tf = fopen (buf, "a"))) |
| { |
| fclose (tf); |
| opnerr (a->oerr, 128, "open"); |
| } |
| #else |
| if (!access (buf, 0)) |
| opnerr (a->oerr, 128, "open"); |
| #endif |
| /* no break */ |
| case 'r': /* Fortran 90 replace option */ |
| case 'R': |
| replace: |
| if ((tf = fopen (buf, f__w_mode[0]))) |
| fclose (tf); |
| } |
| |
| b->ufnm = (char *) malloc ((unsigned int) (strlen (buf) + 1)); |
| if (b->ufnm == NULL) |
| opnerr (a->oerr, 113, "no space"); |
| (void) strcpy (b->ufnm, buf); |
| if ((s = a->oacc) && b->url) |
| ufmt = 0; |
| if (!(tf = fopen (buf, f__w_mode[ufmt | 2]))) |
| { |
| if ((tf = fopen (buf, f__r_mode[ufmt]))) |
| b->urw = 1; |
| else if ((tf = fopen (buf, f__w_mode[ufmt]))) |
| { |
| b->uwrt = 1; |
| b->urw = 2; |
| } |
| else |
| err (a->oerr, errno, "open"); |
| } |
| b->useek = f__canseek (b->ufd = tf); |
| #ifndef NON_UNIX_STDIO |
| if ((b->uinode = f__inode (buf, &b->udev)) == -1) |
| opnerr (a->oerr, 108, "open"); |
| #endif |
| if (b->useek) |
| { |
| if (a->orl) |
| FSEEK (b->ufd, 0, SEEK_SET); |
| else if ((s = a->oacc) && (*s == 'a' || *s == 'A') |
| && FSEEK (b->ufd, 0, SEEK_END)) |
| opnerr (a->oerr, 129, "open"); |
| } |
| return (0); |
| } |
| |
| int |
| fk_open (int seq, int fmt, ftnint n) |
| { |
| char nbuf[10]; |
| olist a; |
| int rtn; |
| int save_init; |
| |
| (void) sprintf (nbuf, "fort.%ld", (long) 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; |
| save_init = f__init; |
| f__init &= ~2; |
| rtn = f_open (&a); |
| f__init = save_init | 1; |
| return rtn; |
| } |