From 44b28e9f8eba6a2943481d5f54ef6f2d21f11f55 Mon Sep 17 00:00:00 2001
From: yinchuang <yinchuang@huawei.com>
Date: Fri, 5 Aug 2022 15:26:18 +0800
Subject: [PATCH] Add incremental compilation judge for pcre2.h
 Issue:https://gitee.com/openharmony/third_party_pcre2/issues/I5KXGS
 Signed-off-by: yinchuang <yinchuang@huawei.com>

Signed-off-by: yinchuang <yinchuang@huawei.com>
---
 BUILD.gn           | 66 +++++++++++++++++++++++++++++++++-------------
 OAT.xml            |  1 +
 pcre2/check_md5.sh | 25 ++++++++++++++++++
 3 files changed, 74 insertions(+), 18 deletions(-)
 create mode 100755 pcre2/check_md5.sh

diff --git a/BUILD.gn b/BUILD.gn
index 42b5846..e4ba690 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -17,24 +17,54 @@ import("//build/ohos.gni")
 PCRE2_LIB_DIR = "//third_party/pcre2/pcre2"
 
 ohos_shared_library("libpcre2") {
-  exec_script("/usr/bin/env",
-              [
-                "cp",
-                rebase_path("$PCRE2_LIB_DIR/src/config.h.generic"),
-                rebase_path("$PCRE2_LIB_DIR/src/config.h"),
-              ])
-  exec_script("/usr/bin/env",
-              [
-                "cp",
-                rebase_path("$PCRE2_LIB_DIR/src/pcre2.h.generic"),
-                rebase_path("$PCRE2_LIB_DIR/src/pcre2.h"),
-              ])
-  exec_script("/usr/bin/env",
-              [
-                "cp",
-                rebase_path("$PCRE2_LIB_DIR/src/pcre2_chartables.c.dist"),
-                rebase_path("$PCRE2_LIB_DIR/src/pcre2_chartables.c"),
-              ])
+  md5_check_script = rebase_path("$PCRE2_LIB_DIR/check_md5.sh")
+  _arguments_config = [
+    rebase_path("$PCRE2_LIB_DIR/src/config.h.generic"),
+    rebase_path("$PCRE2_LIB_DIR/src/config.h"),
+  ]
+
+  check_config_result =
+      exec_script(md5_check_script, _arguments_config, "string")
+  if (check_config_result == "") {
+    exec_script("/usr/bin/env",
+                [
+                  "cp",
+                  rebase_path("$PCRE2_LIB_DIR/src/config.h.generic"),
+                  rebase_path("$PCRE2_LIB_DIR/src/config.h"),
+                ])
+  }
+
+  _arguments_pcre2 = [
+    rebase_path("$PCRE2_LIB_DIR/src/pcre2.h.generic"),
+    rebase_path("$PCRE2_LIB_DIR/src/pcre2.h"),
+  ]
+
+  check_pcre2_result = exec_script(md5_check_script, _arguments_pcre2, "string")
+  if (check_pcre2_result == "") {
+    exec_script("/usr/bin/env",
+                [
+                  "cp",
+                  rebase_path("$PCRE2_LIB_DIR/src/pcre2.h.generic"),
+                  rebase_path("$PCRE2_LIB_DIR/src/pcre2.h"),
+                ])
+  }
+
+  _arguments_pcre2_chartables = [
+    rebase_path("$PCRE2_LIB_DIR/src/pcre2_chartables.c.dist"),
+    rebase_path("$PCRE2_LIB_DIR/src/pcre2_chartables.c"),
+  ]
+
+  check_pcre2_chartables_result =
+      exec_script(md5_check_script, _arguments_pcre2_chartables, "string")
+  if (check_pcre2_chartables_result == "") {
+    exec_script("/usr/bin/env",
+                [
+                  "cp",
+                  rebase_path("$PCRE2_LIB_DIR/src/pcre2_chartables.c.dist"),
+                  rebase_path("$PCRE2_LIB_DIR/src/pcre2_chartables.c"),
+                ])
+  }
+
   output_name = "libpcre2"
   sources = [
     "$PCRE2_LIB_DIR/src/pcre2_auto_possess.c",
diff --git a/OAT.xml b/OAT.xml
index 9ebf3fd..e87f067 100644
--- a/OAT.xml
+++ b/OAT.xml
@@ -24,6 +24,7 @@
             <policy name="projectPolicy" desc="">
                 <policyitem type="copyright" name="University of Cambridge" path=".*" rule="may" group="defaultGroup" filefilter="copyrightPolicyFilter" desc=""/>
                 <policyitem type="copyright" name="北京万里红科技有限公司" path=".*" rule="may" group="defaultGroup" filefilter="copyrightPolicyFilter" desc=""/>
+                <policyitem type="copyright" name="Huawei Device Co., Ltd." path=".*" rule="may" group="defaultGroup" filefilter="copyrightPolicyFilter" desc=""/>
                 <policyitem type="copyright" name="Steven G. Johnson &lt;stevenj@alum.mit.edu&gt;" path=".*" rule="may" group="defaultGroup" filefilter="copyrightPolicyFilter" desc=""/>
                 <policyitem type="copyright" name="Daniel Richard G. &lt;skunk@iSKUNK.ORG&gt;" path=".*" rule="may" group="defaultGroup" filefilter="copyrightPolicyFilter" desc=""/>
                 <policyitem type="copyright" name="X Consortium" path=".*" rule="may" group="defaultGroup" filefilter="copyrightPolicyFilter" desc=""/>
diff --git a/pcre2/check_md5.sh b/pcre2/check_md5.sh
new file mode 100755
index 0000000..ba03c0e
--- /dev/null
+++ b/pcre2/check_md5.sh
@@ -0,0 +1,25 @@
+#! /bin/bash
+
+# Copyright (c) 2022 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+input_file=$1
+output_file=$2
+
+if [ -f $input_file ] && [ -f $output_file ];then
+    input_file_md5=$(md5sum ${input_file} | awk '{print $1}')
+    output_file_md5=$(md5sum ${output_file} | awk '{print $1}')
+    if [ "${input_file_md5}"x == "${output_file_md5}"x ];then
+        echo "ok" 
+    fi
+fi
-- 
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