Add percentage printout

Author: moticless

README.md

@@ -199,7 +199,7 @@ destruction, or when newer block replacing old one.
     Usage: rdb-cli /path/to/dump.rdb [OPTIONS] {print|json|resp|redis} [FORMAT_OPTIONS]
     OPTIONS:
             -l, --log-file <PATH>         Path to the log file or stdout (Default: './rdb-cli.log')
-            -s, --show-progress <INT>     Show progress after every <INT> megabytes processed
+            -s, --show-progress <MBytes>  Show progress to STDOUT after every <MBytes> processed
             -k, --key <REGEX>             Include only keys that match REGEX
             -K  --no-key <REGEX>          Exclude all keys that match REGEX
             -t, --type <TYPE>             Include only selected TYPE {str|list|set|zset|hash|module|func}

src/cli/rdb-cli.c

@@ -4,6 +4,7 @@
 #include <string.h>
 #include <errno.h>
 #include <limits.h>
+#include <sys/stat.h>
 
 /* Rely only on API (and not internal parser headers) */
 #include "../../api/librdb-api.h"
@@ -101,7 +102,7 @@ static void printUsage(int shortUsage) {
     printf("Usage: rdb-cli /path/to/dump.rdb [OPTIONS] {print|json|resp|redis} [FORMAT_OPTIONS]\n");
     printf("OPTIONS:\n");
     printf("\t-l, --log-file <PATH>         Path to the log file or stdout (Default: './rdb-cli.log')\n");
-    printf("\t-s, --show-progress <INT>     Show progress after every <INT> megabytes processed\n");
+    printf("\t-s, --show-progress <MBytes>  Show progress to STDOUT after every <MBytes> processed\n");
     printf("\t-k, --key <REGEX>             Include only keys that match REGEX\n");
     printf("\t-K  --no-key <REGEX>          Exclude all keys that match REGEX\n");
     printf("\t-t, --type <TYPE>             Include only selected TYPE {str|list|set|zset|hash|module|func}\n");
@@ -433,6 +434,7 @@ void closeLogFileOnExit() {
 
 int main(int argc, char **argv)
 {
+    size_t fileSize = 0;
     Options options;
     RdbStatus status;
     int at;
@@ -476,6 +478,15 @@ int main(int argc, char **argv)
     } else {
         if (RDBX_createReaderFile(parser, input /*file*/) == NULL)
             return RDB_ERR_GENERAL;
+
+        /* If input is a file, then get its size */
+        struct stat st;
+        if (stat(input, &st) == 0) {
+            fileSize = st.st_size;
+        } else {
+            printf("Error getting file size: %s\n", strerror(errno));
+            return RDB_ERR_GENERAL;
+        }
     }
 
     if (RDB_OK != (res = options.formatFunc(parser, argc - at, argv + at)))
@@ -494,11 +505,18 @@ int main(int argc, char **argv)
             status = RDB_parse(parser);
             if (status == RDB_STATUS_WAIT_MORE_DATA)
                 continue;
-            else if (status == RDB_STATUS_PAUSED)
-                printf("... Processed %zuMBytes ...\n",
-                       RDB_getBytesProcessed(parser) / (1024 * 1024));
-            else
-                break;
+            else if (status == RDB_STATUS_PAUSED) {
+                size_t bytes = RDB_getBytesProcessed(parser);
+                /* If file size is known, print percentage */
+                if (fileSize != 0)
+                    printf("... Processed %zuMBytes (%.2f%%) ...\n",
+                           bytes / (1024 * 1024), (bytes * 100.0) / fileSize);
+                else
+                    printf("... Processed %zuMBytes ...\n", bytes / (1024 * 1024));
+                continue;
+            }
+
+            break; /* RDB_STATUS_ERROR */
         }
     } else {
         while ((status = RDB_parse(parser)) == RDB_STATUS_WAIT_MORE_DATA);