1、网页是采用文件读写方式,还是转换为数组方式?
其通过宏定义“WEBS_PAGE_ROM”来区分,我是在websPageReadData()(page.c)函数源码发现的
int websPageReadData(webs_t wp, char *buf, int nBytes)
{
#ifdef WEBS_PAGE_ROM
a_assert(websValid(wp));
return websRomPageReadData(wp, buf, nBytes);
#else
a_assert(websValid(wp));
return read(wp->docfd, buf, nBytes);
#endif
}
知识兔2、浏览器提交的数据处理流程
initWebs() (main.c)
websOpenServer(port, retries);
websOpenListen(port, retries);
socketOpenConnection(NULL, port, websAccept, 0); 中的websAccept
int websAccept(int sid, char *ipaddr, int port, int listenSid)
socketCreateHandler(sid, SOCKET_READABLE, websSocketEvent, (int) wp);
static void websSocketEvent(int sid, int mask, int iwp)
void websReadEvent(webs_t wp)
websUrlHandlerRequest(wp)
sp = &websUrlHandler[i]; 其数组内容由websUrlHandlerDefine()函数填充
if ((*sp->handler)(wp, sp->urlPrefix, sp->webDir, sp->arg,
wp->url, wp->path, wp->query))
int websFormHandler(webs_t wp, char_t *urlPrefix, char_t *webDir, int arg,
char_t *url, char_t *path, char_t *query)
sp = symLookup(formSymtab, formName);// formSymtab数组内容由websFormDefine()函数填充
fn = (int (*)(void *, char_t *, char_t *)) sp->content.value.integer;
(*fn)((void*) wp, formName, query); 最后的表单处理函数,
3、对浏览器提交的数据处理,移植需要注意的两步(即最后两步)
1)先由websUrlHandlerDefine(T("/goform"), NULL, 0, websFormHandler, 0);中注册的websFormHandler()函数处理
其内部有怎么一段:fn = (int (*)(void *, char_t *, char_t *)) sp->content.value.integer;
(*fn)((void*) wp, formName, query);
1 int websFormHandler(webs_t wp, char_t *urlPrefix, char_t *webDir, int arg,
2 char_t *url, char_t *path, char_t *query)
3 {
4 printf("formhandler %s ----- %d\n", __func__, __LINE__);
5 sym_t *sp;
6 char_t formBuf[FNAMESIZE];
7 char_t *cp, *formName;
8 int (*fn)(void *sock, char_t *path, char_t *args);
9
10 a_assert(websValid(wp));
11 a_assert(url && *url);
12 a_assert(path && *path == '/');
13
14 websStats.formHits++;
15
16 /*
17 * Extract the form name
18 */
19 gstrncpy(formBuf, path, TSZ(formBuf));
20 printf("path:%s\n", path);
21 printf("formbuf:%s\n", formBuf);
22 if ((formName = gstrchr(&formBuf[1], '/')) == NULL) {
23 websError(wp, 200, T("Missing form name"));
24 return 1;
25 }
26 //printf("111formname:%s\n", formName);
27 formName++;
28 //printf("222formname:%s\n", formName);
29 #if 1
30 if ((cp = gstrchr(formName, '/')) != NULL) //后续"/"之后的都失效
31 {
32 *cp = '\0';
33 }
34 #endif
35 //printf("333formname:%s\n", formName);
36 /*
37 * Lookup the C form function first and then try tcl (no javascript support
38 * yet).
39 */
40 sp = symLookup(formSymtab, formName);
41 if (sp == NULL) {
42 websError(wp, 200, T("Form %s is not defined"), formName);
43 } else {
44 fn = (int (*)(void *, char_t *, char_t *)) sp->content.value.integer;
45 a_assert(fn);
46 if (fn) {
47 /*
48 * For good practice, forms must call websDone()
49 */
50 (*fn)((void*) wp, formName, query);
51
52 /*
53 * Remove the test to force websDone, since this prevents
54 * the server "push" from a form>
55 */
56 #if 0 /* push */
57 if (websValid(wp)) {
58 websError(wp, 200, T("Form didn't call websDone"));
59 }
60 #endif /* push */
61 }
62 }
63 return 1;
64 }
知识兔2) 然后根据URL中判断是哪个表单,然后调用相应的在initWebs()函数中用websFormDefine()注册的回调函数:
如:websFormDefine(T("gpio_p24"), on_gp24_set); 则表示URL中末尾是gpio_p24,则调用on_gp24_set()函数
int websFormDefine(char_t *name, void (*fn)(webs_t wp, char_t *path,
char_t *query))
{
//1 printf("formdefine %s ----- %d\n", __func__, __LINE__);
a_assert(name && *name);
a_assert(fn);
if (fn == NULL) {
return -1;
}
symEnter(formSymtab, name, valueInteger((long) fn), 0);
return 0;
}
知识兔3