Initial commit

1 files changed, 34 insertions, 0 deletions

diff --git a/noao/onedspec/splot/stshelp.x b/noao/onedspec/splot/stshelp.x
new file mode 100644
index 00000000..f34de38a
--- /dev/null
+++ b/noao/onedspec/splot/stshelp.x
@@ -0,0 +1,34 @@
+include	<error.h>
+
+
+# STS_HELP -- Issue a help line
+
+procedure sts_help (line, nlines, fname, ptr)
+
+int	line		# Line to print
+int	nlines		# Number of lines of help
+char	fname[ARB]	# Help file
+pointer	ptr		# Cache help
+
+int	fd, open(), getline()
+
+begin
+	if (ptr == NULL) {
+	    iferr (fd = open (fname, READ_ONLY, TEXT_FILE)) {
+		call erract (EA_WARN)
+		return
+	    }
+	    nlines = 0
+	    call malloc (ptr, SZ_LINE, TY_CHAR)
+	    while (getline (fd, Memc[ptr+nlines*SZ_LINE]) != EOF) {
+		nlines = nlines + 1
+		call realloc (ptr, (nlines+1)*SZ_LINE, TY_CHAR)
+	    }
+	    call close (fd)
+	}
+
+	if (line >= 1  && line <= nlines) {
+	    call putline (STDOUT, Memc[ptr+(line-1)*SZ_LINE])
+	    call flush (STDOUT)
+	}
+end