Make getContentType available for 3rd party usage (#7254)

* Refactored to make getContentType public for 3rd party use.

* Added missing "jpeg" extension

* Use getContentType() from mime namespace.

* Also add .jpeg extension

Author: vdeconinck

libraries/ESP8266WebServer/examples/FSBrowser/FSBrowser.ino

@@ -115,49 +115,6 @@ void replyServerError(String msg) {
   server.send(500, FPSTR(TEXT_PLAIN), msg + "\r\n");
 }
 
-String getContentType(String filename) {
-  if (filename.endsWith(".htm")) {
-    return "text/html";
-  }
-  if (filename.endsWith(".html")) {
-    return "text/html";
-  }
-  if (filename.endsWith(".css")) {
-    return "text/css";
-  }
-  if (filename.endsWith(".js")) {
-    return "application/javascript";
-  }
-  if (filename.endsWith(".png")) {
-    return "image/png";
-  }
-  if (filename.endsWith(".gif")) {
-    return "image/gif";
-  }
-  if (filename.endsWith(".jpg")) {
-    return "image/jpeg";
-  }
-  if (filename.endsWith(".jpeg")) {
-    return "image/jpeg";
-  }
-  if (filename.endsWith(".ico")) {
-    return "image/x-icon";
-  }
-  if (filename.endsWith(".xml")) {
-    return "text/xml";
-  }
-  if (filename.endsWith(".pdf")) {
-    return "application/x-pdf";
-  }
-  if (filename.endsWith(".zip")) {
-    return "application/x-zip";
-  }
-  if (filename.endsWith(".gz")) {
-    return "application/x-gzip";
-  }
-  return FPSTR(TEXT_PLAIN);
-}
-
 #ifdef USE_SPIFFS
 /*
    Checks filename for character combinations that are not supported by FSBrowser (alhtough valid on SPIFFS).
@@ -304,7 +261,7 @@ bool handleFileRead(String path) {
   if (server.hasArg("download")) {
     contentType = F("application/octet-stream");
   } else {
-    contentType = getContentType(path);
+    contentType = mime::getContentType(path);
   }
 
   if (!fileSystem->exists(path)) {

libraries/ESP8266WebServer/src/detail/RequestHandlersImpl.h

@@ -120,7 +120,7 @@ class StaticRequestHandler : public RequestHandler<ServerType> {
         }
         DEBUGV("StaticRequestHandler::handle: path=%s, isFile=%d\r\n", path.c_str(), _isFile);
 
-        String contentType = getContentType(path);
+        String contentType = mime::getContentType(path);
 
         // look for gz file, only if the original specified path is not a gz.  So part only works to send gzip via content encoding when a non compressed is asked for
         // if you point the the path to gzip you will serve the gzip as content type "application/x-gzip", not text or javascript etc...
@@ -146,19 +146,9 @@ class StaticRequestHandler : public RequestHandler<ServerType> {
         return true;
     }
 
-    static String getContentType(const String& path) {
-        char buff[sizeof(mimeTable[0].mimeType)];
-        // Check all entries but last one for match, return if found
-        for (size_t i=0; i < sizeof(mimeTable)/sizeof(mimeTable[0])-1; i++) {
-            strcpy_P(buff, mimeTable[i].endsWith);
-            if (path.endsWith(buff)) {
-                strcpy_P(buff, mimeTable[i].mimeType);
-                return String(buff);
-            }
-        }
-        // Fall-through and just return default type
-        strcpy_P(buff, mimeTable[sizeof(mimeTable)/sizeof(mimeTable[0])-1].mimeType);
-        return String(buff);
+    /* Deprecated version. Please use mime::getContentType instead */
+    static String getContentType(const String& path) __attribute__((deprecated)) {
+        return mime::getContentType(path);
     }
 
 protected:

libraries/ESP8266WebServer/src/detail/mimetable.cpp

@@ -1,5 +1,6 @@
 #include "mimetable.h"
 #include "pgmspace.h"
+#include "WString.h"
 
 namespace mime
 {
@@ -16,6 +17,7 @@ const Entry mimeTable[maxType] PROGMEM =
     { ".png", "image/png" },
     { ".gif", "image/gif" },
     { ".jpg", "image/jpeg" },
+    { ".jpeg", "image/jpeg" },
     { ".ico", "image/x-icon" },
     { ".svg", "image/svg+xml" },
     { ".ttf", "application/x-font-ttf" },
@@ -32,4 +34,19 @@ const Entry mimeTable[maxType] PROGMEM =
     { "", "application/octet-stream" } 
 };
 
+    String getContentType(const String& path) {
+        char buff[sizeof(mimeTable[0].mimeType)];
+        // Check all entries but last one for match, return if found
+        for (size_t i=0; i < sizeof(mimeTable)/sizeof(mimeTable[0])-1; i++) {
+            strcpy_P(buff, mimeTable[i].endsWith);
+            if (path.endsWith(buff)) {
+                strcpy_P(buff, mimeTable[i].mimeType);
+                return String(buff);
+            }
+        }
+        // Fall-through and just return default type
+        strcpy_P(buff, mimeTable[sizeof(mimeTable)/sizeof(mimeTable[0])-1].mimeType);
+        return String(buff);
+    }
+
 }

libraries/ESP8266WebServer/src/detail/mimetable.h

@@ -1,6 +1,7 @@
 #ifndef __MIMETABLE_H__
 #define __MIMETABLE_H__
 
+#include "WString.h"
 
 namespace mime
 {
@@ -16,6 +17,7 @@ enum type
   png,
   gif,
   jpg,
+  jpeg,
   ico,
   svg,
   ttf,
@@ -41,7 +43,8 @@ struct Entry
 
 
 extern const Entry mimeTable[maxType];
-}
 
+String getContentType(const String& path);
+}
 
 #endif