1 files changed, 156 insertions, 0 deletions
diff --git a/contrib/libf2c/libI77/dfe.c b/contrib/libf2c/libI77/dfe.c
new file mode 100644
index 0000000..5ce0b4c
--- /dev/null
+++ b/contrib/libf2c/libI77/dfe.c
@@ -0,0 +1,156 @@
+#include "config.h"
+#include "f2c.h"
+#include "fio.h"
+#include "fmt.h"
+
+int
+y_rsk (void)
+{
+  if (f__curunit->uend || f__curunit->url <= f__recpos
+      || f__curunit->url == 1)
+    return 0;
+  do
+    {
+      getc (f__cf);
+    }
+  while (++f__recpos < f__curunit->url);
+  return 0;
+}
+
+int
+y_getc (void)
+{
+  int ch;
+  if (f__curunit->uend)
+    return (-1);
+  if ((ch = getc (f__cf)) != EOF)
+    {
+      f__recpos++;
+      if (f__curunit->url >= f__recpos || f__curunit->url == 1)
+	return (ch);
+      else
+	return (' ');
+    }
+  if (feof (f__cf))
+    {
+      f__curunit->uend = 1;
+      errno = 0;
+      return (-1);
+    }
+  err (f__elist->cierr, errno, "readingd");
+}
+
+static int
+y_rev (void)
+{
+  if (f__recpos < f__hiwater)
+    f__recpos = f__hiwater;
+  if (f__curunit->url > 1)
+    while (f__recpos < f__curunit->url)
+      (*f__putn) (' ');
+  if (f__recpos)
+    f__putbuf (0);
+  f__recpos = 0;
+  return (0);
+}
+
+static int
+y_err (void)
+{
+  err (f__elist->cierr, 110, "dfe");
+}
+
+static int
+y_newrec (void)
+{
+  y_rev ();
+  f__hiwater = f__cursor = 0;
+  return (1);
+}
+
+int
+c_dfe (cilist * a)
+{
+  f__sequential = 0;
+  f__formatted = f__external = 1;
+  f__elist = a;
+  f__cursor = f__scale = f__recpos = 0;
+  f__curunit = &f__units[a->ciunit];
+  if (a->ciunit > MXUNIT || a->ciunit < 0)
+    err (a->cierr, 101, "startchk");
+  if (f__curunit->ufd == NULL && fk_open (DIR, FMT, a->ciunit))
+    err (a->cierr, 104, "dfe");
+  f__cf = f__curunit->ufd;
+  if (!f__curunit->ufmt)
+    err (a->cierr, 102, "dfe");
+  if (!f__curunit->useek)
+    err (a->cierr, 104, "dfe");
+  f__fmtbuf = a->cifmt;
+  if (a->cirec <= 0)
+    err (a->cierr, 130, "dfe");
+  FSEEK (f__cf, (off_t) f__curunit->url * (a->cirec - 1), SEEK_SET);
+  f__curunit->uend = 0;
+  return (0);
+}
+
+integer
+s_rdfe (cilist * a)
+{
+  int n;
+  if (f__init != 1)
+    f_init ();
+  f__init = 3;
+  f__reading = 1;
+  if ((n = c_dfe (a)))
+    return (n);
+  if (f__curunit->uwrt && f__nowreading (f__curunit))
+    err (a->cierr, errno, "read start");
+  f__getn = y_getc;
+  f__doed = rd_ed;
+  f__doned = rd_ned;
+  f__dorevert = f__donewrec = y_err;
+  f__doend = y_rsk;
+  if (pars_f (f__fmtbuf) < 0)
+    err (a->cierr, 100, "read start");
+  fmt_bg ();
+  return (0);
+}
+
+integer
+s_wdfe (cilist * a)
+{
+  int n;
+  if (f__init != 1)
+    f_init ();
+  f__init = 3;
+  f__reading = 0;
+  if ((n = c_dfe (a)))
+    return (n);
+  if (f__curunit->uwrt != 1 && f__nowwriting (f__curunit))
+    err (a->cierr, errno, "startwrt");
+  f__putn = x_putc;
+  f__doed = w_ed;
+  f__doned = w_ned;
+  f__dorevert = y_err;
+  f__donewrec = y_newrec;
+  f__doend = y_rev;
+  if (pars_f (f__fmtbuf) < 0)
+    err (a->cierr, 100, "startwrt");
+  fmt_bg ();
+  return (0);
+}
+
+integer
+e_rdfe (void)
+{
+  f__init = 1;
+  en_fio ();
+  return (0);
+}
+
+integer
+e_wdfe (void)
+{
+  f__init = 1;
+  return en_fio ();
+}