Initial commit

1 files changed, 110 insertions, 0 deletions

diff --git a/noao/obsutil/src/sptime/t_cgiparse.x b/noao/obsutil/src/sptime/t_cgiparse.x
new file mode 100644
index 00000000..8985a8f0
--- /dev/null
+++ b/noao/obsutil/src/sptime/t_cgiparse.x
@@ -0,0 +1,110 @@
+define	SZ_QUERY	2048
+
+
+# T_CGIPARSE -- Parse the CGI QUERY_STRING environment variable.
+# The string is expected to be a set of task.param=value pairs.
+# The task parameter values are set.
+
+procedure t_cgiparse ()
+
+char	c, hex[2]
+int	i
+long	hexval
+pointer	sp, str, par, val
+pointer	ip, op
+
+int	envfind(), gctol()
+
+begin
+	call smark (sp)
+	call salloc (str, SZ_QUERY, TY_CHAR)
+	call salloc (par, SZ_LINE, TY_CHAR)
+	call salloc (val, SZ_LINE, TY_CHAR)
+
+	# Get the query string.  If there isn't one then do nothing.
+	if (envfind ("QUERY_STRING", Memc[str], SZ_QUERY) <= 0)
+	    return
+	
+	# Parse the query string into parameters and values.
+	# For each pair set the task parameter.
+
+	op = par
+	for (ip=str;; ip=ip+1) {
+	    c = Memc[ip]
+	    switch (c) {
+	    case '&', EOS:		# End of parameter=value
+		Memc[op] = EOS
+		call cgi_setpar (Memc[par], Memc[val])
+		if (c == EOS)
+		    break
+		Memc[par] = EOS
+		Memc[val] = EOS
+		op = par
+		next
+	    case '=':			# Separator between parameters and value
+		Memc[op] = EOS
+		op = val
+		next
+	    case '+':			# Space character
+		c = ' '
+	    case '%':			# Special characters in hex
+		call strcpy (Memc[ip+1], hex, 2)
+		i = 1
+		if (gctol (hex, i, hexval, 16) > 0) {
+		    c = hexval
+		    ip = ip + 2
+		}
+	    }
+
+	    Memc[op] = c
+	    op = op + 1
+	}
+
+	call sfree (sp)
+end
+
+
+# CGI_SETPAR -- Set parameter value.
+# There is no error check for undefined tasks or parameters.
+# Values of the wrong type are ignored.
+
+procedure cgi_setpar (param, val)
+
+char	param[ARB]		#I Task parameter
+char	val[ARB]		#I Value string
+
+bool	bval, streq()
+int	ival, ip, ctoi(), ctod()
+double	dval
+pointer	sp, str, type
+
+begin
+	call smark (sp)
+	call salloc (str, SZ_LINE, TY_CHAR)
+	call salloc (type, 10, TY_CHAR)
+
+	# Determine if parameter type.
+	call sprintf (Memc[str], SZ_LINE, "%s.p_type")
+	    call pargstr (param)
+	call clgstr (Memc[str], Memc[type], 10)
+
+	# Set parameter in the approriate type.
+	ip = 1
+	switch (Memc[type]) {
+	case 'i':
+	    if (ctoi (val, ip, ival) > 0)
+		call clputi (param, ival)
+	case 'r':
+	    if (ctod (val, ip, dval) > 0)
+		call clputd (param, dval)
+	case 'b':
+	    if (streq (val, "no") || streq (val, "yes")) {
+		bval = streq (val, "yes")
+		call clputb (param, bval)
+	    }
+	default:
+	    call clpstr (param, val)
+	}
+
+	call sfree (sp)
+end