Added super-simple template engine

user/httpdespfs.c

@@ -4,10 +4,16 @@ Connector to let httpd use the espfs filesystem to serve the files in that.
 
 #include <string.h>
 #include <osapi.h>
+#include "c_types.h"
+#include "user_interface.h"
+#include "espconn.h"
+#include "mem.h"
+
 #include "httpd.h"
 #include "espfs.h"
 #include "httpdespfs.h"
 
+
 int ICACHE_FLASH_ATTR cgiEspFsHook(HttpdConnData *connData) {
 	EspFsFile *file=connData->cgiData;
 	int len;
@@ -44,3 +50,87 @@ int ICACHE_FLASH_ATTR cgiEspFsHook(HttpdConnData *connData) {
 	}
 }
 
+
+typedef struct {
+	EspFsFile *file;
+	void *tplArg;
+	char token[64];
+	int tokenPos;
+} TplData;
+
+typedef int (* TplCallback)(HttpdConnData *connData, char *token, void **arg);
+
+int ICACHE_FLASH_ATTR cgiEspFsTemplate(HttpdConnData *connData) {
+	TplData *tpd=connData->cgiData;
+	int len;
+	int x, sp;
+	char *p, *e;
+	int sentTo;
+	char buff[1025];
+
+	if (connData->conn==NULL) {
+		//Connection aborted. Clean up.
+		((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
+		espFsClose(tpd->file);
+		os_free(tpd);
+		return HTTPD_CGI_DONE;
+	}
+
+	if (tpd==NULL) {
+		//First call to this cgi. Open the file so we can read it.
+		tpd=(TplData *)os_malloc(sizeof(TplData));
+		tpd->file=espFsOpen(connData->url);
+		tpd->tplArg=NULL;
+		tpd->tokenPos=-1;
+		if (tpd->file==NULL) {
+			return HTTPD_CGI_NOTFOUND;
+		}
+		connData->cgiData=tpd;
+		httpdStartResponse(connData, 200);
+		httpdHeader(connData, "Content-Type", httpdGetMimetype(connData->url));
+		httpdEndHeaders(connData);
+		return HTTPD_CGI_MORE;
+	}
+
+	len=espFsRead(tpd->file, buff, 1024);
+	if (len>0) {
+		sp=0;
+		e=buff;
+		for (x=0; x<len; x++) {
+			if (tpd->tokenPos==-1) {
+				//Inside ordinary text.
+				if (buff[x]=='%') {
+					//Send raw data up to now
+					if (sp!=0) espconn_sent(connData->conn, (uint8 *)e, sp);
+					sp=0;
+					//Go collect token chars.
+					tpd->tokenPos=0;
+				} else {
+					sp++;
+				}
+			} else {
+				if (buff[x]=='%') {
+					tpd->token[tpd->tokenPos++]=0; //zero-terminate token
+					((TplCallback)(connData->cgiArg))(connData, tpd->token, &tpd->tplArg);
+					//Go collect normal chars again.
+					e=&buff[x+1];
+					tpd->tokenPos=-1;
+				} else {
+					if (tpd->tokenPos<(sizeof(tpd->token)-1)) tpd->token[tpd->tokenPos++]=buff[x];
+				}
+			}
+		}
+	}
+	//Send remaining bit.
+	if (sp!=0) espconn_sent(connData->conn, (uint8 *)e, sp);
+	if (len!=1024) {
+		//We're done.
+		((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
+		espFsClose(tpd->file);
+		return HTTPD_CGI_DONE;
+	} else {
+		//Ok, till next time.
+		return HTTPD_CGI_MORE;
+	}
+}
+

user/httpdespfs.h

@@ -5,5 +5,6 @@
 #include "espfs.h"
 
 int cgiEspFsHook(HttpdConnData *connData);
+int ICACHE_FLASH_ATTR cgiEspFsTemplate(HttpdConnData *connData);
 
 #endif