Comtrol eCos - Manual (Page 637)

Chapter 48. Embedded HTTP Server
Forms Support
#define html_form_begin( __client, __url, __attr )
#define html_form_end( __client )
#define html_form_input( __client, __type, __name, __value, __attr )
#define html_form_input_radio( __client, __name, __value, __checked )
#define html_form_input_checkbox( __client, __name, __value, __checked )
#define html_form_input_hidden( __client, __name, __value )
#define html_form_select_begin( __client, __name, __attr )
#define html_form_option( __client, __value, __label, __selected )
#define html_form_select_end( __client )
void cyg_formdata_parse( char *data, char *list[], int size );
char *cyg_formlist_find( char *list[], char *name );
html_form_begin() begins a form, the __url argument is the value for the action attribute.
html_form_end() ends the form.
html_form_input() defines a general form input element with the given type, name and value.
html_form_input_radio creates a radio button with the given name and value; the __checked argument
is a boolean expression that is used to determine whether the checked attribute is added to the tag. Similarly
html_form_input_checkbox() defines a checkbox element. html_form_input_hidden() defines a hidden
form element with the given name and value.
html_form_select_begin() begins a multiple choice menu with the given name. html_form_select_end()
end it. html_form_option() defines a menu entry with the given value and label; the __selected argument is
a boolean expression controlling whether the selected attribute is added to the tag.
cyg_formdata_parse() converts a form response string into an NULL -terminated array of "name=value" entries.
The data argument is the string as passed to the handler function; note that this string is not copied and will be
updated in place to form the list entries. list is a pointer to an array of character pointers, and is size elements
long. cyg_formlist_find() searches a list generated by cyg_formdata_parse() and returns a pointer to the
value part of the string whose name part matches name ; if there is no match it will return NULL .
Predefined Handlers
int cyg_httpd_send_html( FILE *client, char *filename, char *request, void *arg );
typedef struct
{
char *content_type;
cyg_uint32 content_length;
cyg_uint8 *data;
} cyg_httpd_data;
#define CYG_HTTPD_DATA( __name, __type, __length, __data )
int cyg_httpd_send_data( FILE *client, char *filename, char *request, void *arg );
The HTTP server defines a couple of predefined handers to make it easier to deliver simple, static content.
cyg_httpd_send_html() takes a NULL -terminated string as the argument and sends it to the client with an HTTP
header indicating that it is HTML. The following is an example of its use:
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