From 5b96673f7d0d04bbc02cf5dcc3160b61c0c4efc6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E5=8D=9A?=
 <10188013+lli-boo@user.noreply.gitee.com>
Date: Wed, 15 Dec 2021 05:06:46 +0000
Subject: [PATCH] update services/hilogtool/main.cpp.

---
 services/hilogtool/main.cpp | 39 +++++++++++++++++++------------------
 1 file changed, 20 insertions(+), 19 deletions(-)

diff --git a/services/hilogtool/main.cpp b/services/hilogtool/main.cpp
index d35e920..d79214f 100644
--- a/services/hilogtool/main.cpp
+++ b/services/hilogtool/main.cpp
@@ -28,17 +28,17 @@
 #include "hilog_common.h"
 #include "hilogtool_msg.h"
 #include "log_controller.h"
-#include "log_display.h"
+#include "log_display.h"//调用前几个文件
 
-namespace OHOS {
-namespace HiviewDFX {
+namespace OHOS {//给OHOS做定义
+namespace HiviewDFX {//给HiviewDFX做定义
 using namespace std;
-constexpr int DEFAULT_LOG_TYPE = 1<<LOG_APP | 1<<LOG_INIT | 1<<LOG_CORE;
-constexpr int DEFAULT_LOG_LEVEL = 1<<LOG_DEBUG | 1<<LOG_INFO | 1<<LOG_WARN | 1 <<LOG_ERROR | 1 <<LOG_FATAL;
+constexpr int DEFAULT_LOG_TYPE = 1<<LOG_APP | 1<<LOG_INIT | 1<<LOG_CORE;//当三项有一项大于一时成立
+constexpr int DEFAULT_LOG_LEVEL = 1<<LOG_DEBUG | 1<<LOG_INFO | 1<<LOG_WARN | 1 <<LOG_ERROR | 1 <<LOG_FATAL;//当四项中有一项成立时成立
 
 static void Helper()
 {
-    fprintf(stderr, "Usage:  [options]\n");
+    fprintf(stderr, "Usage:  [options]\n");//输出stderr和句子
     fprintf(stderr,
     "options include:\n"
     "  No option default action: performs a blocking read and keeps printing.\n"
@@ -112,12 +112,12 @@ static void Helper()
     "  Example: \"-t ^core,app\" excludes logs with types core and app.\n"
     "  Could be used along with other parameters.\n",
     MAX_DOMAINS, MAX_TAGS, MAX_PIDS
-    );
+    );//同上
 }
 
-static int GetTypes(HilogArgs context, const string& typesArgs, bool exclude = false)
+static int GetTypes(HilogArgs context, const string& typesArgs, bool exclude = false)//定义一个静态变量函数
 {
-    uint16_t types = 0;
+    uint16_t types = 0;//之前有typedef将int定义为uint16-t
     if (exclude) {
         types = context.noTypes;
     } else {
@@ -135,7 +135,7 @@ static int GetTypes(HilogArgs context, const string& typesArgs, bool exclude = f
         std::cout << ParseErrorCode(ERR_LOG_TYPE_INVALID) << endl;
         exit(0);
     }
-    return types;
+    return types;//当输入的typesArgs为上面四个相等时，并且只要一个函数内的条件成立，或者exclude不存在时types才可以为1
 }
 
 static int GetLevels(HilogArgs context, const string& levelsArgs, bool exclude = false)
@@ -161,7 +161,7 @@ static int GetLevels(HilogArgs context, const string& levelsArgs, bool exclude =
         exit(0);
     }
     return levels;
-}
+}//同上
 
 int HilogEntry(int argc, char* argv[])
 {
@@ -211,13 +211,13 @@ int HilogEntry(int argc, char* argv[])
             { "write",       required_argument, nullptr, 'w' },
             { "baselevel",   required_argument, nullptr, 'b' },
             {nullptr, 0, nullptr, 0}
-        };
+        };//定义一个struct类的矩阵；
 
         int choice = getopt_long(argc, argv, "hxz:grsSa:v:e:t:L:G:f:l:n:j:w:p:k:M:D:T:b:Q:m:P:",
             longOptions, &optIndex);
         if (choice == -1) {
             break;
-        }
+        }//若输入失败，结束
 
         switch (choice) {
             case 'x':
@@ -241,7 +241,7 @@ int HilogEntry(int argc, char* argv[])
                 if (context.logTypeArgs.find("all") != context.logTypeArgs.npos ||
                     context.logTypeArgs.find(" ") != context.logTypeArgs.npos) {
                     break;
-                }
+                }//若出现这两种形式则结束
                 indexType = optind - 1;
                 while (indexType < argc) {
                     string types(argv[indexType]);
@@ -249,8 +249,8 @@ int HilogEntry(int argc, char* argv[])
                     if (!strstr(types.c_str(), "-")) {
                         if (types.front() == '^') {
                             vector<string> v(sregex_token_iterator(types.begin() + 1, types.end(), delimiter, -1),
-                                             sregex_token_iterator());
-                            for (auto s : v) {
+                                             sregex_token_iterator());//若if成立，定义一个vector类的string为v
+                            for (auto s : v) {//从s到v
                                 context.noTypes = GetTypes(context, s, true);
                             }
                         } else {
@@ -350,13 +350,14 @@ int HilogEntry(int argc, char* argv[])
                     }
                     std::string domains(argv[indexDomain]);
                     indexDomain++;
-                    if (!strstr(domains.c_str(), "-")) {
+                    if (!strstr(domains.c_str(), "-")) {//寻找子串在第一个字符串中出现的位置
+
                         char* endptr = nullptr;
                         if (domains.front() == '^') {
                             vector<string> v(sregex_token_iterator(domains.begin() + 1, domains.end(), delimiter, -1),
                                              sregex_token_iterator());
                             for (auto s: v) {
-                                strtoul(s.c_str(), &endptr, DOMAIN_NUMBER_BASE);
+                                strtoul(s.c_str(), &endptr, DOMAIN_NUMBER_BASE);//以最后数字为进制数，对第二个数进行转换
                                 if (*endptr != '\0') {
                                     cout << ParseErrorCode(ERR_QUERY_DOMAIN_INVALID) << endl;
                                     exit(RET_FAIL);
@@ -600,7 +601,7 @@ int HilogEntry(int argc, char* argv[])
             return 0;
     }
 
-    MessageHeader* msgHeader = reinterpret_cast<MessageHeader*>(recvBuffer);
+    MessageHeader* msgHeader = reinterpret_cast<MessageHeader*>(recvBuffer);//定义一个messageaHeader类的指针函数
     switch (msgHeader->msgType) {
         case MC_RSP_BUFFER_RESIZE:
         case MC_RSP_BUFFER_SIZE:
-- 
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