enhance cp command to accept dest path as an folder

demos/host/host_os_none/host_os_none.uvopt

@@ -761,7 +761,7 @@
         <tDllPa></tDllPa>
         <tDlgDll></tDlgDll>
         <tDlgPa></tDlgPa>
-        <tIfile>.\keil_ram.ini</tIfile>
+        <tIfile>..\..\bsp\lpc43xx\keil_ram.ini</tIfile>
         <pMon>Segger\JL2CM3.dll</pMon>
       </DebugOpt>
       <TargetDriverDllRegistry>
@@ -1428,7 +1428,7 @@
       <Focus>0</Focus>
       <ColumnNumber>39</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>58</TopLine>
+      <TopLine>59</TopLine>
       <CurrentLine>63</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\vendor\fatfs\diskio.c</PathWithFileName>
@@ -1444,8 +1444,8 @@
       <Focus>0</Focus>
       <ColumnNumber>11</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>2114</TopLine>
-      <CurrentLine>2121</CurrentLine>
+      <TopLine>2115</TopLine>
+      <CurrentLine>2122</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\vendor\fatfs\ff.c</PathWithFileName>
       <FilenameWithoutPath>ff.c</FilenameWithoutPath>
@@ -1516,7 +1516,7 @@
       <Focus>0</Focus>
       <ColumnNumber>17</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>83</TopLine>
+      <TopLine>84</TopLine>
       <CurrentLine>90</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\bsp\boards\printf_retarget.c</PathWithFileName>
@@ -1652,7 +1652,7 @@
       <Focus>0</Focus>
       <ColumnNumber>13</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>170</TopLine>
+      <TopLine>171</TopLine>
       <CurrentLine>174</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\bsp\lpc43xx\startup_keil\startup_LPC43xx.s</PathWithFileName>
@@ -1868,7 +1868,7 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>140</TopLine>
+      <TopLine>141</TopLine>
       <CurrentLine>145</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\bsp\lpc175x_6x\startup_keil\startup_LPC17xx.s</PathWithFileName>

demos/host/host_os_none/host_os_none.uvproj

@@ -2462,7 +2462,7 @@
             <CpuDllArguments></CpuDllArguments>
             <PeripheralDll></PeripheralDll>
             <PeripheralDllArguments></PeripheralDllArguments>
-            <InitializationFile>.\keil_ram.ini</InitializationFile>
+            <InitializationFile>..\..\bsp\lpc43xx\keil_ram.ini</InitializationFile>
             <Driver>Segger\JL2CM3.dll</Driver>
           </TargetDlls>
         </DebugOption>

demos/host/src/cli.c

@@ -396,19 +396,30 @@ cli_error_t cli_cmd_copy(char *p_para)
   drive_letter2number(p_para);
   drive_letter2number(p_dest);
 
-  //------------- Check Existence of source & dest file -------------//
+  //------------- Check Existence of source file -------------//
+  FIL src_file;
+  if ( FR_OK != f_open(&src_file , p_para, FA_READ) )  return CLI_ERROR_INVALID_PATH;
+
+  //------------- Check if dest path is a folder or a non-existing file (overwritten is not allowed) -------------//
+  FILINFO dest_entry;
+  if ( (f_stat(p_dest, &dest_entry) == FR_OK) && (dest_entry.fattrib & AM_DIR) )
+  { // the destination is an existed folder --> auto append dest filename to be the folder
+    strcat(p_dest, "/");
+    strcat(p_dest, p_para);
+  }
+
+  //------------- Open dest file and start the copy -------------//
   cli_error_t error = CLI_ERROR_NONE;
-  FIL src_file, dest_file;
+  FIL dest_file;
 
-  if ( FR_OK != f_open(&src_file , p_para, FA_READ) )  return CLI_ERROR_INVALID_PATH;
   switch ( f_open(&dest_file, p_dest, FA_WRITE | FA_CREATE_NEW) )
   {
     case FR_EXIST:
       error = CLI_ERROR_FILE_EXISTED;
-    break;\
+    break;
 
     case FR_OK:
-      while(1)
+      while(1) // copying
       {
         uint32_t bytes_read = 0;
         uint32_t bytes_write = 0;