Repatch (from linux) of OSX IRAF

1 files changed, 121 insertions, 0 deletions

diff --git a/pkg/ecl/lists.c b/pkg/ecl/lists.c
new file mode 100644
index 00000000..547af32d
--- /dev/null
+++ b/pkg/ecl/lists.c
@@ -0,0 +1,121 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_libc
+#define import_stdio
+#include <iraf.h>
+
+#include "config.h"
+#include "mem.h"
+#include "operand.h"
+#include "param.h"
+#include "task.h"
+#include "errs.h"
+#include "proto.h"
+
+
+/*
+ * LISTS -- Access lists for list-structured parameters.
+ */
+
+extern	char *eofstr;
+extern	char *nullstr;
+extern	int	cldebug;
+
+
+/* READLIST -- Read next value from list-structured parameter *pp and return
+ * an operand.  Operand will be UNDEF if there was no file or cannot open the
+ * named file (this will generate a query for the param) or eofstr if eof.
+ * As a special case, check for the value of the param being the string "stdin"
+ *   and read from the current standard input if it is.
+ * Call error() if get ferror while reading or can't open list file.
+ */
+struct operand 
+readlist (struct param *pp)
+{
+	struct	operand result;
+	int	bastype;
+	char	*line;
+
+	result.o_type = OT_INT;		/* in case we make an undef op	*/
+	line = pp->p_listval;
+
+	if ((pp->p_valo.o_type & OT_UNDEF) || *pp->p_val.v_s == '\0') {
+	    /* no list file name. */
+	    pp->p_flags &= ~P_LEOF;
+	    setopundef (&result);
+	    return (result);
+	}
+
+	if (pp->p_listfp == NULL && !(pp->p_flags & P_LEOF)) {
+	    char *filename = pp->p_val.v_s;
+	    if (!strcmp (filename, "STDIN") || !strcmp (filename, "stdin"))
+		pp->p_listfp = currentask->t_stdin;
+	    else if ((pp->p_listfp = fopen (filename, "r")) == NULL) {
+		/* should we tell user what's happening?
+		cl_error (E_UERR|E_P, "can not open list file `%s'",
+		    pp->p_val.v_s);
+		 */
+		setopundef (&result);
+		return (result);
+	    }
+	}
+
+	bastype = pp->p_type & OT_BASIC;
+
+	if (pp->p_listfp != NULL) {
+again:	    fgets (line, SZ_LINE, pp->p_listfp);
+	    if (ferror (pp->p_listfp)) {
+		closelist (pp);
+		/* Don't just let it go as undefined if get an actual error. */
+		cl_error (E_UERR|E_P, "list file read err");
+
+	    } else if (feof (pp->p_listfp)) {
+		closelist (pp);
+		pp->p_flags |= P_LEOF;
+		result = makeop (eofstr, OT_STRING);
+
+	    } else {
+		char *index(), *nlp, *ip;
+
+		nlp = index (line, '\n');
+		if (nlp != NULL)
+		    *nlp = '\0';
+
+		/* If not simple list structured struct type parameter (used
+		 * to get raw lines from a text file), ignore blank lines and
+		 * comments lines in the list.
+		 */
+		if (bastype != OT_STRING ||
+		    pp->p_type & (PT_FILNAM|PT_GCUR|PT_IMCUR|PT_UKEY)) {
+
+		    for (ip=line;  *ip && (*ip == ' ' || *ip == '\t');  ip++)
+			;
+		    if (*ip == EOS || *ip == '#')
+			goto again;
+		}
+			
+		result = makeop (line, bastype);
+	    }
+
+	} else
+	    result = makeop (eofstr, OT_STRING);
+
+	return (result);
+}
+
+
+/* CLOSELIST -- Close the list file in list-structured param pp.
+ * We assume (pp->p_type & PT_LIST) but do check that the file is not
+ * already closed and that we're not closing the real stdin.
+ */
+void 
+closelist (register struct param *pp)
+{
+	if (pp->p_listfp != NULL) {
+	    if (pp->p_listfp != stdin)
+		fclose (pp->p_listfp);
+	    pp->p_listfp = NULL;
+	}
+}