fix:uniform output csv format with shell output

tools/shell/inc/shellInt.h

@@ -45,6 +45,8 @@
 #define SHELL_MAX_PKG_NUM                      1 * 1024 * 1024
 #define SHELL_MIN_PKG_NUM                      1
 #define SHELL_DEF_PKG_NUM                      100
+#define SHELL_FLOAT_WIDTH                      20
+#define SHELL_DOUBLE_WIDTH                     25
 
 typedef struct {
   char*   hist[SHELL_MAX_HISTORY_SIZE];

tools/shell/src/shellEngine.c

@@ -358,22 +358,29 @@ void shellDumpFieldToFile(TdFilePtr pFile, const char *val, TAOS_FIELD *field, i
       taosFprintfFile(pFile, "%" PRIu64, *((uint64_t *)val));
       break;
     case TSDB_DATA_TYPE_FLOAT:
+      int32_t width = SHELL_FLOAT_WIDTH;
       if (tsEnableScience) {
-        taosFprintfFile(pFile, "%e", GET_FLOAT_VAL(val));
+        printf("%*e", width, GET_FLOAT_VAL(val));
       } else {
-        taosFprintfFile(pFile, "%.5f", GET_FLOAT_VAL(val));
+        n = snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.5f", width, GET_FLOAT_VAL(val));
+        if (n > SHELL_FLOAT_WIDTH) {
+            printf("%*e", width, GET_FLOAT_VAL(val));
+        } else {
+            printf("%s", buf);
+        }
       }
       break;
     case TSDB_DATA_TYPE_DOUBLE:
+      int32_t width = SHELL_DOUBLE_WIDTH;
       if (tsEnableScience) {
-        snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.9e", 23, GET_DOUBLE_VAL(val));
-        taosFprintfFile(pFile, "%s", buf);
+        snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%.9e", GET_DOUBLE_VAL(val));
+        taosFprintfFile(pFile, "%*s", width, buf);
       } else {
-        n = snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.9f", length, GET_DOUBLE_VAL(val));
-        if (n > TMAX(25, length)) {
-          taosFprintfFile(pFile, "%*.15e", length, GET_DOUBLE_VAL(val));
+        n = snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.9f", width, GET_DOUBLE_VAL(val));
+        if (n > SHELL_DOUBLE_WIDTH) {
+            taosFprintfFile(pFile, "%*.15e", width, GET_DOUBLE_VAL(val));
         } else {
-          taosFprintfFile(pFile, "%s", buf);
+            taosFprintfFile(pFile, "%s", buf);
         }
       }
       break;
@@ -607,7 +614,7 @@ void shellPrintField(const char *val, TAOS_FIELD *field, int32_t width, int32_t
         printf("%*e", width, GET_FLOAT_VAL(val));
       } else {
         n = snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.5f", width, GET_FLOAT_VAL(val));
-        if (n > TMAX(20, width)) {
+        if (n > SHELL_FLOAT_WIDTH) {
             printf("%*e", width, GET_FLOAT_VAL(val));
         } else {
             printf("%s", buf);
@@ -620,7 +627,7 @@ void shellPrintField(const char *val, TAOS_FIELD *field, int32_t width, int32_t
         printf("%*s", width, buf);
       } else {
         n = snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.9f", width, GET_DOUBLE_VAL(val));
-        if (n > TMAX(25, width)) {
+        if (n > SHELL_DOUBLE_WIDTH) {
             printf("%*.15e", width, GET_DOUBLE_VAL(val));
         } else {
             printf("%s", buf);
@@ -757,10 +764,10 @@ int32_t shellCalcColWidth(TAOS_FIELD *field, int32_t precision) {
       return TMAX(21, width);  // '-9223372036854775807'
 
     case TSDB_DATA_TYPE_FLOAT:
-      return TMAX(20, width);
+      return TMAX(SHELL_FLOAT_WIDTH, width);
 
     case TSDB_DATA_TYPE_DOUBLE:
-      return TMAX(25, width);
+      return TMAX(SHELL_DOUBLE_WIDTH, width);
 
     case TSDB_DATA_TYPE_BINARY:
     case TSDB_DATA_TYPE_GEOMETRY: