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Dependencies:   mbed

lwip/HTTPServer/HTTPStaticPage.h@0:4570f87afab6, 2011-09-03 (annotated)

Committer:
geiineuville
Date:
Sat Sep 03 09:42:32 2011 +0000
Revision:
0:4570f87afab6
v1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
geiineuville 0:4570f87afab6 1 #ifndef HTTPSTATICPAGE_H
geiineuville 0:4570f87afab6 2 #define HTTPSTATICPAGE_H
geiineuville 0:4570f87afab6 3
geiineuville 0:4570f87afab6 4 #include "HTTPServer.h"
geiineuville 0:4570f87afab6 5
geiineuville 0:4570f87afab6 6 /**
geiineuville 0:4570f87afab6 7 * A datastorage helper for the HTTPStaticPage class.
geiineuville 0:4570f87afab6 8 * Stores only the left upload size.
geiineuville 0:4570f87afab6 9 */
geiineuville 0:4570f87afab6 10 class HTTPStaticPageData : public HTTPData {
geiineuville 0:4570f87afab6 11 public: int left;
geiineuville 0:4570f87afab6 12 };
geiineuville 0:4570f87afab6 13
geiineuville 0:4570f87afab6 14 /**
geiineuville 0:4570f87afab6 15 * This class Provide a Handler to send Static HTTP Pages from the bin file.
geiineuville 0:4570f87afab6 16 */
geiineuville 0:4570f87afab6 17 class HTTPStaticPage : public HTTPHandler {
geiineuville 0:4570f87afab6 18 public:
geiineuville 0:4570f87afab6 19 /**
geiineuville 0:4570f87afab6 20 * Constructer takes the pagename and the pagedata.
geiineuville 0:4570f87afab6 21 * As long as the pagedata is NULL terminated you have not to tell the data length.
geiineuville 0:4570f87afab6 22 * But if you want to send binary data you should tell us the size.
geiineuville 0:4570f87afab6 23 */
geiineuville 0:4570f87afab6 24 HTTPStaticPage(const char *path, const char *page, int length = 0)
geiineuville 0:4570f87afab6 25 : HTTPHandler(path), _page(page) {
geiineuville 0:4570f87afab6 26 _size = (length)?length:strlen(_page);
geiineuville 0:4570f87afab6 27 }
geiineuville 0:4570f87afab6 28
geiineuville 0:4570f87afab6 29 HTTPStaticPage(HTTPServer *server, const char *path, const char *page, int length = 0)
geiineuville 0:4570f87afab6 30 : HTTPHandler(path), _page(page) {
geiineuville 0:4570f87afab6 31 _size = (length)?length:strlen(_page);
geiineuville 0:4570f87afab6 32 server->addHandler(this);
geiineuville 0:4570f87afab6 33 }
geiineuville 0:4570f87afab6 34
geiineuville 0:4570f87afab6 35 private:
geiineuville 0:4570f87afab6 36 /**
geiineuville 0:4570f87afab6 37 * A this Static Page is requested!
geiineuville 0:4570f87afab6 38 * Prepare a datastorage helper "HTTPStaticPageHelper" to store the left data size.
geiineuville 0:4570f87afab6 39 * And return HTTP_OK
geiineuville 0:4570f87afab6 40 */
geiineuville 0:4570f87afab6 41 virtual HTTPStatus init(HTTPConnection *con) const {
geiineuville 0:4570f87afab6 42 HTTPStaticPageData *data = new HTTPStaticPageData();
geiineuville 0:4570f87afab6 43 con->data = data;
geiineuville 0:4570f87afab6 44 data->left = _size;
geiineuville 0:4570f87afab6 45 con->setLength(_size);
geiineuville 0:4570f87afab6 46 return HTTP_OK;
geiineuville 0:4570f87afab6 47 }
geiineuville 0:4570f87afab6 48
geiineuville 0:4570f87afab6 49 /**
geiineuville 0:4570f87afab6 50 * Send the maximum data out to the client.
geiineuville 0:4570f87afab6 51 * If the file is complete transmitted close connection by returning HTTP_SuccessEnded
geiineuville 0:4570f87afab6 52 */
geiineuville 0:4570f87afab6 53 virtual HTTPHandle send(HTTPConnection *con, int maximum) const {
geiineuville 0:4570f87afab6 54 HTTPStaticPageData *data = static_cast<HTTPStaticPageData *>(con->data);
geiineuville 0:4570f87afab6 55 int len = min(maximum, data->left);
geiineuville 0:4570f87afab6 56 err_t err;
geiineuville 0:4570f87afab6 57
geiineuville 0:4570f87afab6 58 do {
geiineuville 0:4570f87afab6 59 err = con->write((void*)&_page[_size - data->left], len, 1);
geiineuville 0:4570f87afab6 60 if(err == ERR_MEM) {
geiineuville 0:4570f87afab6 61 len >>= 1;
geiineuville 0:4570f87afab6 62 }
geiineuville 0:4570f87afab6 63 } while(err == ERR_MEM && len > 1);
geiineuville 0:4570f87afab6 64 if(err == ERR_OK) {
geiineuville 0:4570f87afab6 65 data->left -= len;
geiineuville 0:4570f87afab6 66 }
geiineuville 0:4570f87afab6 67
geiineuville 0:4570f87afab6 68 return (data->left)? HTTP_Success : HTTP_SuccessEnded;
geiineuville 0:4570f87afab6 69 }
geiineuville 0:4570f87afab6 70
geiineuville 0:4570f87afab6 71 /** Pointer to the page data */
geiineuville 0:4570f87afab6 72 const char *_page;
geiineuville 0:4570f87afab6 73
geiineuville 0:4570f87afab6 74 /** page data size*/
geiineuville 0:4570f87afab6 75 int _size;
geiineuville 0:4570f87afab6 76 };
geiineuville 0:4570f87afab6 77
geiineuville 0:4570f87afab6 78 #endif