add function get_gzip_command_filename

HISTORY

@@ -1,4 +1,6 @@
 
+Version 1.42  2019-11-30
+  * add function get_gzip_command_filename
 
 Version 1.41  2019-09-30
   * change CIDR network_bits range from [16, 32) to [10, 32)

INSTALL

@@ -9,7 +9,8 @@ Chinese language: http://www.fastken.com/
 # download libfastcommon source codes and install it,
 #   github address:  https://github.com/happyfish100/libfastcommon.git
 #   gitee address:   https://gitee.com/fastdfs100/libfastcommon.git
-# command lines as:
+# the command lines as:
+
    git clone https://github.com/happyfish100/libfastcommon.git
    cd libfastcommon; git checkout V1.0.41
    ./make.sh clean && ./make.sh && ./make.sh install

src/logger.c

@@ -689,7 +689,6 @@ int log_delete_old_files(void *args)
 static void* log_gzip_func(void *args)
 {
     LogContext *pContext;
-    char *gzip;
     char cmd[MAX_PATH_SIZE + 128];
     struct log_filename_array filename_array;
     char log_filepath[MAX_PATH_SIZE];
@@ -698,19 +697,6 @@ static void* log_gzip_func(void *args)
     int i;
 
     pContext = (LogContext *)args;
-    if (access("/bin/gzip", F_OK) == 0)
-    {
-        gzip = "/bin/gzip";
-    }
-    else if (access("/usr/bin/gzip", F_OK) == 0)
-    {
-        gzip = "/usr/bin/gzip";
-    }
-    else
-    {
-        gzip = "gzip";
-    }
-
     if (log_get_prefix_len(pContext, &prefix_len) != 0)
     {
         return NULL;
@@ -735,7 +721,8 @@ static void* log_gzip_func(void *args)
 
         snprintf(full_filename, sizeof(full_filename), "%s%s",
                 log_filepath, filename_array.filenames[i]);
-        snprintf(cmd, sizeof(cmd), "%s %s", gzip, full_filename);
+        snprintf(cmd, sizeof(cmd), "%s %s",
+                get_gzip_command_filename(), full_filename);
         if (system(cmd) == -1)
 	{
 		fprintf(stderr, "execute %s fail\n", cmd);

src/shared_func.c

@@ -2846,3 +2846,23 @@ char *resolve_path(const char *from, const char *filename,
     }
     return full_filename;
 }
+
+const char *get_gzip_command_filename()
+{
+    if (access("/usr/bin/gzip", F_OK) == 0)
+    {
+        return "/usr/bin/gzip";
+    }
+    else if (access("/bin/gzip", F_OK) == 0)
+    {
+        return "/bin/gzip";
+    }
+    else if (access("/usr/local/bin/gzip", F_OK) == 0)
+    {
+        return "/usr/local/bin/gzip";
+    }
+    else
+    {
+        return "gzip";
+    }
+}

src/shared_func.h

@@ -851,6 +851,11 @@ char *format_http_date(time_t t, BufferInfo *buffer);
 char *resolve_path(const char *from, const char *filename,
         char *full_filename, const int size);
 
+/** get gzip command full filename
+ *  return: the gzip command full filename
+*/
+const char *get_gzip_command_filename();
+
 #ifdef __cplusplus
 }
 #endif