1 files changed, 121 insertions, 0 deletions
diff --git a/contrib/libf2c/libI77/endfile.c b/contrib/libf2c/libI77/endfile.c
new file mode 100644
index 0000000..0b785a9
--- /dev/null
+++ b/contrib/libf2c/libI77/endfile.c
@@ -0,0 +1,121 @@
+#include "f2c.h"
+#include "fio.h"
+
+#ifdef KR_headers
+extern char *strcpy();
+extern FILE *tmpfile();
+#else
+#undef abs
+#undef min
+#undef max
+#include <stdlib.h>
+#include <string.h>
+#endif
+
+extern char *f__r_mode[], *f__w_mode[];
+
+#ifdef KR_headers
+integer f_end(a) alist *a;
+#else
+integer f_end(alist *a)
+#endif
+{
+	unit *b;
+	FILE *tf;
+
+	if (f__init & 2)
+		f__fatal (131, "I/O recursion");
+	if(a->aunit>=MXUNIT || a->aunit<0) err(a->aerr,101,"endfile");
+	b = &f__units[a->aunit];
+	if(b->ufd==NULL) {
+		char nbuf[10];
+		sprintf(nbuf,"fort.%ld",a->aunit);
+		if (tf = fopen(nbuf, f__w_mode[0]))
+			fclose(tf);
+		return(0);
+		}
+	b->uend=1;
+	return(b->useek ? t_runc(a) : 0);
+}
+
+ static int
+#ifdef KR_headers
+copy(from, len, to) FILE *from, *to; register long len;
+#else
+copy(FILE *from, register long len, FILE *to)
+#endif
+{
+	int len1;
+	char buf[BUFSIZ];
+
+	while(fread(buf, len1 = len > BUFSIZ ? BUFSIZ : (int)len, 1, from)) {
+		if (!fwrite(buf, len1, 1, to))
+			return 1;
+		if ((len -= len1) <= 0)
+			break;
+		}
+	return 0;
+	}
+
+ int
+#ifdef KR_headers
+t_runc(a) alist *a;
+#else
+t_runc(alist *a)
+#endif
+{
+	long loc, len;
+	unit *b;
+	FILE *bf, *tf;
+	int rc = 0;
+
+	b = &f__units[a->aunit];
+	if(b->url)
+		return(0);	/*don't truncate direct files*/
+	loc=ftell(bf = b->ufd);
+	fseek(bf,0L,SEEK_END);
+	len=ftell(bf);
+	if (loc >= len || b->useek == 0 || b->ufnm == NULL)
+		return(0);
+	fclose(b->ufd);
+	if (!loc) {
+		if (!(bf = fopen(b->ufnm, f__w_mode[b->ufmt])))
+			rc = 1;
+		if (b->uwrt)
+			b->uwrt = 1;
+		goto done;
+		}
+	if (!(bf = fopen(b->ufnm, f__r_mode[0]))
+	 || !(tf = tmpfile())) {
+ bad:
+		rc = 1;
+		goto done;
+		}
+	if (copy(bf, loc, tf)) {
+ bad1:
+		rc = 1;
+		goto done1;
+		}
+	if (!(bf = freopen(b->ufnm, f__w_mode[0], bf)))
+		goto bad1;
+	rewind(tf);
+	if (copy(tf, loc, bf))
+		goto bad1;
+	b->urw = 2;
+#ifdef NON_UNIX_STDIO
+	if (b->ufmt) {
+		fclose(bf);
+		if (!(bf = fopen(b->ufnm, f__w_mode[3])))
+			goto bad;
+		fseek(bf,0L,SEEK_END);
+		b->urw = 3;
+		}
+#endif
+done1:
+	fclose(tf);
+done:
+	f__cf = b->ufd = bf;
+	if (rc)
+		err(a->aerr,111,"endfile");
+	return 0;
+	}