NCD: Fix evdev event code names with newer headers.

Most of the event codes may be defined in another header file not directly in linux/input.h.
Also remove _MAX and _CNT codes.

ncd/CMakeLists.txt

@@ -171,12 +171,19 @@ if (BADVPN_USE_LINUX_INPUT)
         message(FATAL_ERROR "failed to match preprocessor output for path of linux/input.h")
     endif ()
     set(LINUX_INPUT_H_PATH ${CMAKE_MATCH_1})
-
-    message(STATUS "Generating linux_input_names.h from ${LINUX_INPUT_H_PATH}")
+    
+    string(REGEX MATCH "\"(/[^\"]+/linux/input-event-codes.h)\"" LINUX_INPUT_EVENT_CODES_MATCH ${LINUX_INPUT_PREPROCESS_OUTPUT})
+    if (NOT LINUX_INPUT_EVENT_CODES_MATCH)
+        set(LINUX_INPUT_EVENT_CODES_H_PATH)
+    else ()
+        set(LINUX_INPUT_EVENT_CODES_H_PATH ${CMAKE_MATCH_1})
+    endif ()
+    
+    message(STATUS "Generating linux_input_names.h from ${LINUX_INPUT_H_PATH} ${LINUX_INPUT_EVENT_CODES_H_PATH}")
 
     execute_process(COMMAND bash ${CMAKE_CURRENT_SOURCE_DIR}/parse_linux_input.sh 
-                            ${LINUX_INPUT_H_PATH}
                             ${CMAKE_CURRENT_BINARY_DIR}/linux_input_names.h
+                            ${LINUX_INPUT_H_PATH} ${LINUX_INPUT_EVENT_CODES_H_PATH}
                     RESULT_VARIABLE LINUX_INPUT_PARSE_RESULT)
     if (NOT LINUX_INPUT_PARSE_RESULT EQUAL 0)
         message(FATAL_ERROR "failed to generate linux_input_names.h")

ncd/parse_linux_input.sh

@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
 
-INPUT=$1
-OUTPUT=$2
+OUTPUT=$1
+shift
+INPUTS=("$@")
 
 types=""
 keys=""
@@ -18,10 +19,12 @@ ffstatuss=""
 while read LINE; do
     tab=$'\t'
     space="[ ${tab}]"
-    regex="^#define ((EV|SYN|KEY|BTN|REL|ABS|SW|MSC|LED|REP|SND|FF_STATUS)_[A-Z0-9_]+)${space}"
+    regex="^#define ((EV|SYN|KEY|BTN|REL|ABS|SW|MSC|LED|REP|SND|FF_STATUS)_([A-Z0-9_]+))${space}"
     if [[ $LINE =~ $regex ]]; then
-        type=${BASH_REMATCH[2]}
         name=${BASH_REMATCH[1]}
+        type=${BASH_REMATCH[2]}
+        nameonly=${BASH_REMATCH[3]}
+        [[ $nameonly = "MAX" || $nameonly = "CNT" ]] && continue
         if [[ $type = "EV" ]]; then
             if [[ $name != "EV_VERSION" ]]; then
                 types="${types}    [${name}] = \"${name}\",
@@ -61,7 +64,7 @@ while read LINE; do
 "
         fi
     fi
-done < "${INPUT}"
+done < <(cat "${INPUTS[@]}")
 
 (
 echo "