shell: update sort and uniq help to show piped input support (#5688)

* Update `sort` and `uniq` help to reflect piped input support
* Updated handlers to check `argc` before accessing `argv[1]`

librz/core/cmd/cmd_shell.c

@@ -311,6 +311,9 @@ RZ_IPI RzCmdStatus rz_cmd_shell_sleep_handler(RzCore *core, int argc, const char
 
 // uniq
 RZ_IPI RzCmdStatus rz_cmd_shell_uniq_handler(RzCore *core, int argc, const char **argv) {
+	if (argc < 2) {
+		return RZ_CMD_STATUS_OK;
+	}
 	char *res = rz_syscmd_uniq(argv[1]);
 	if (!res) {
 		return RZ_CMD_STATUS_ERROR;
@@ -449,11 +452,15 @@ RZ_IPI RzCmdStatus rz_cmd_shell_pwd_handler(RzCore *core, int argc, const char *
 
 // sort
 RZ_IPI RzCmdStatus rz_cmd_shell_sort_handler(RzCore *core, int argc, const char **argv) {
-	char *res = rz_syscmd_sort(argv[1]);
-	if (res) {
-		rz_cons_print(res);
-		free(res);
+	if (argc < 2) {
+		return RZ_CMD_STATUS_OK;
 	}
+	char *res = rz_syscmd_sort(argv[1]);
+	if (!res) {
+		return RZ_CMD_STATUS_ERROR;
+	}
+	rz_cons_print(res);
+	free(res);
 	return RZ_CMD_STATUS_OK;
 }
 

librz/core/cmd_descs/cmd_descs.c

@@ -21123,12 +21123,13 @@ static const RzCmdDescArg cmd_shell_uniq_args[] = {
 	{
 		.name = "filename",
 		.type = RZ_CMD_ARG_TYPE_FILE,
+		.optional = true,
 
 	},
 	{ 0 },
 };
 static const RzCmdDescHelp cmd_shell_uniq_help = {
-	.summary = "List uniq strings in <filename>",
+	.summary = "List unique strings in <filename> or from piped input",
 	.args = cmd_shell_uniq_args,
 };
 
@@ -21276,12 +21277,13 @@ static const RzCmdDescArg cmd_shell_sort_args[] = {
 	{
 		.name = "file",
 		.type = RZ_CMD_ARG_TYPE_FILE,
+		.optional = true,
 
 	},
 	{ 0 },
 };
 static const RzCmdDescHelp cmd_shell_sort_help = {
-	.summary = "Sort the contents of <file>",
+	.summary = "Sort the contents of <file> or from piped input",
 	.args = cmd_shell_sort_args,
 };
 

librz/core/cmd_descs/cmd_shell.yaml

@@ -110,10 +110,11 @@ commands:
         type: RZ_CMD_ARG_TYPE_NUM
   - name: uniq
     cname: cmd_shell_uniq
-    summary: List uniq strings in <filename>
+    summary: List unique strings in <filename> or from piped input
     args:
       - name: filename
         type: RZ_CMD_ARG_TYPE_FILE
+        optional: true
   - name: uname
     cname: cmd_shell_uname
     summary: Provide system info
@@ -183,11 +184,12 @@ commands:
     cname: cmd_shell_pwd
     args: []
   - name: sort
-    summary: Sort the contents of <file>
+    summary: Sort the contents of <file> or from piped input
     cname: cmd_shell_sort
     args:
       - name: file
         type: RZ_CMD_ARG_TYPE_FILE
+        optional: true
   - name: clear
     summary: Clear screen/console
     cname: cmd_shell_clear