From 7d38b19361a7e779461f6f85ad975b048478ef31 Mon Sep 17 00:00:00 2001
From: XingZhe-Li <xingzhe_li@qq.com>
Date: Fri, 10 Jul 2026 13:49:12 +0800
Subject: [PATCH] use file mode other than REPL Mode when stdin is not a tty

---
 src/interpreter/vmx.c | 23 +---------------
 src2/main.c           | 63 ++++++++++++++++++++++++++++++++-----------
 2 files changed, 48 insertions(+), 38 deletions(-)

diff --git a/src/interpreter/vmx.c b/src/interpreter/vmx.c
index 2137011e..28d19c5f 100644
--- a/src/interpreter/vmx.c
+++ b/src/interpreter/vmx.c
@@ -1,13 +1,6 @@
 #include "pocketpy/interpreter/vm.h"
 #include <assert.h>
 
-// importing io.h for tty detection in replinput
-#if defined(_WIN32) || defined(_WIN64)
-#include <windows.h>
-#elif defined(__linux__) || defined(__APPLE__) || defined(__ANDROID__)
-#include <unistd.h>
-#endif
-
 void pk_print_stack(VM* self, py_Frame* frame, Bytecode byte) {
     return;
     if(frame == NULL || !self->main || py_isnil(self->main)) return;
@@ -73,25 +66,12 @@ bool pk_wrapper__self(int argc, py_Ref argv) {
     return true;
 }
 
-// macro for tty-sensitiveness
-#if defined(_WIN32) || defined(_WIN64)
-static inline int isatty_win(DWORD std_handle_id) {
-    HANDLE handle = GetStdHandle(std_handle_id); DWORD mode;
-    if (handle == INVALID_HANDLE_VALUE || handle == NULL) return 0; 
-    return GetConsoleMode(handle, &mode) != 0;
-}
-#define istty isatty_win(STD_INPUT_HANDLE)
-#elif defined(__linux__) || defined(__APPLE__) || defined(__ANDROID__)
-#define istty isatty(0)
-#else
-#define istty 1 
-#endif
 int py_replinput(char* buf, int max_size) {
     buf[0] = '\0';  // reset first char because we check '@' at the beginning
 
     int size = 0;
     bool multiline = false;
-    if (istty) printf(">>> ");
+    printf(">>> ");
 
     while(true) {
         int c = pk_current_vm->callbacks.getchr();
@@ -127,7 +107,6 @@ int py_replinput(char* buf, int max_size) {
     buf[size] = '\0';
     return size;
 }
-#undef istty
 
 py_Ref py_name2ref(py_Name name) {
     assert(name != NULL);
diff --git a/src2/main.c b/src2/main.c
index 2d111791..eab03764 100644
--- a/src2/main.c
+++ b/src2/main.c
@@ -97,10 +97,41 @@ int main(int argc, char** argv) {
 
     const char* filename = arg1;
     if(filename == NULL) {
-        if(profile) printf("Warning: --profile is ignored in REPL mode.\n");
-        if(debug) printf("Warning: --debug is ignored in REPL mode.\n");
+        if(!istty) {
+            // File mode: read stdin and execute as a script
+            if(profile) printf("Warning: --profile is ignored in stdin mode.\n");
+            if(debug) printf("Warning: --debug is ignored in stdin mode.\n");
+
+            size_t cap = 4096;
+            size_t total = 0;
+            char* data = PK_MALLOC(cap);
+            if(!data) { fprintf(stderr, "Error: out of memory\n"); py_finalize(); return 1; }
+
+            int n;
+            while((n = fread(data + total, 1, cap - total - 1, stdin)) > 0) {
+                total += n;
+                if(total >= cap - 1) {
+                    cap *= 2;
+                    char* tmp = PK_REALLOC(data, cap);
+                    if(!tmp) { PK_FREE(data); fprintf(stderr, "Error: out of memory\n"); py_finalize(); return 1; }
+                    data = tmp;
+                }
+            }
+            data[total] = '\0';
+
+            if(total > 0) {
+                py_StackRef p0 = py_peek(0);
+                if(!py_exec(data, "<stdin>", EXEC_MODE, NULL)) {
+                    py_printexc();
+                    py_clearexc(p0);
+                }
+            }
+            PK_FREE(data);
+        } else {
+            // REPL mode
+            if(profile) printf("Warning: --profile is ignored in REPL mode.\n");
+            if(debug) printf("Warning: --debug is ignored in REPL mode.\n");
 
-        if (istty) {
             printf("pocketpy " PK_VERSION " (" __DATE__ ", " __TIME__ ") ");
             printf("[%d bit] on %s", (int)(sizeof(void*) * 8), PY_SYS_PLATFORM_STRING);
 #ifndef NDEBUG
@@ -109,20 +140,20 @@ int main(int argc, char** argv) {
             printf("\n");
             printf("https://github.com/pocketpy/pocketpy\n");
             printf("Type \"exit()\" to exit.\n");
-        }
 
-        while(true) {
-            int size = py_replinput(buf, sizeof(buf));
-            if(size == -1) {  // Ctrl-D (i.e. EOF)
-                if (istty) printf("\n");
-                break;
-            }
-            assert(size < sizeof(buf));
-            if(size >= 0) {
-                py_StackRef p0 = py_peek(0);
-                if(!py_exec(buf, "<stdin>", SINGLE_MODE, NULL)) {
-                    py_printexc();
-                    py_clearexc(p0);
+            while(true) {
+                int size = py_replinput(buf, sizeof(buf));
+                if(size == -1) {  // Ctrl-D (i.e. EOF)
+                    printf("\n");
+                    break;
+                }
+                assert(size < sizeof(buf));
+                if(size >= 0) {
+                    py_StackRef p0 = py_peek(0);
+                    if(!py_exec(buf, "<stdin>", SINGLE_MODE, NULL)) {
+                        py_printexc();
+                        py_clearexc(p0);
+                    }
                 }
             }
         }