Implement R2_ARGS as it was done for rabin2 and rarun2

* TODO: Unify all this logic into a single function

binr/rabin2/rabin2.c

@@ -1,7 +1,17 @@
-/* radare - LGPL - Copyright 2009-2022 - pancake */
+/* radare - LGPL - Copyright 2009-2023 - pancake */
 
 #include <r_main.h>
 
 int main(int argc, const char **argv) {
+	char *ea = r_sys_getenv ("RABIN2_ARGS");
+	if (R_STR_ISNOTEMPTY (ea)) {
+		char **argv = r_str_argv (ea, &argc);
+		r_sys_setenv ("RABIN2_ARGS", NULL);
+		int res = r_main_rabin2 (argc, (const char **)argv);
+		free (ea);
+		free (argv);
+		return res;
+	}
+	free (ea);
 	return r_main_rabin2 (argc, argv);
 }

libr/main/rabin2.c

@@ -75,6 +75,7 @@ static int rabin_show_help(int v) {
 	if (v) {
 		printf ("Environment:\n"
 		" R2_NOPLUGINS:     1|0|               # do not load shared plugins (speedup loading)\n"
+		" RABIN2_ARGS:                         # ignore cli and use these program arguments\n"
 		" RABIN2_CHARSET:   e cfg.charset      # set default value charset for -z strings\n"
 		" RABIN2_DEBASE64:  e bin.str.debase64 # try to debase64 all strings\n"
 		" RABIN2_DEMANGLE=0:e bin.demangle     # do not demangle symbols\n"

libr/main/radare2.c

@@ -171,6 +171,7 @@ static int main_help(int line) {
 		" R2_USER_ZIGNS   ${XDG_DATA_DIR:=~/.local/share/radare2}/zigns\n"
 		"Environment:\n"
 		" R2_COLOR        sets the initial value for 'scr.color'. set to 0 for no color\n"
+		" R2_ARGS         ignore cli arguments and use these ones instead\n"
 		" R2_DEBUG        if defined, show error messages and crash signal.\n"
 		" R2_DEBUG_NOPAPI do not load r2papi in the -j qjs shell\n"
 		" R2_DEBUG_ASSERT set a breakpoint when hitting an assert.\n"

libr/main/rarun2.c

@@ -1,4 +1,4 @@
-/* radare2 - Copyleft 2011-2022 - pancake */
+/* radare2 - Copyleft 2011-2023 - pancake */
 
 #define R_LOG_ORIGIN "rarun2"
 

man/rabin2.1

@@ -139,6 +139,8 @@ Dump raw strings to stdout (for huge files)
 .El
 .Sh ENVIRONMENT
 .Pp
+RABIN2_ARGS ignore cli and use these arguments instead
+.Pp
 RABIN2_LANG same as r2 -e bin.lang for rabin2
 .Pp
 RABIN2_DEMANGLE demangle symbols

test/perf/mem.r2.js

@@ -1,4 +1,5 @@
-const lines = r2.cmd('cat mem.log').split(/\n/);
+const logfile = 'a.txt';
+const lines = r2.cmd('cat '+logfile).split(/\n/);
 let total = 0;
 let leaked = 0;
 var track = {};