1 files changed, 43 insertions, 0 deletions
diff --git a/src/s2wasm-main.cpp b/src/s2wasm-main.cpp
new file mode 100644
index 000000000..011e4d164
--- /dev/null
+++ b/src/s2wasm-main.cpp
@@ -0,0 +1,43 @@
+//
+// wasm2asm console tool
+//
+
+#include "s2wasm.h"
+
+using namespace cashew;
+using namespace wasm;
+
+namespace wasm {
+int debug = 0;
+}
+
+int main(int argc, char **argv) {
+  debug = getenv("WASM2ASM_DEBUG") ? getenv("WASM2ASM_DEBUG")[0] - '0' : 0;
+
+  char *infile = argv[1];
+
+  if (debug) std::cerr << "loading '" << infile << "'...\n";
+  FILE *f = fopen(argv[1], "r");
+  assert(f);
+  fseek(f, 0, SEEK_END);
+  int size = ftell(f);
+  char *input = new char[size+1];
+  rewind(f);
+  int num = fread(input, 1, size, f);
+  // On Windows, ftell() gives the byte position (\r\n counts as two bytes), but when
+  // reading, fread() returns the number of characters read (\r\n is read as one char \n, and counted as one),
+  // so return value of fread can be less than size reported by ftell, and that is normal.
+  assert((num > 0 || size == 0) && num <= size);
+  fclose(f);
+  input[num] = 0;
+
+  if (debug) std::cerr << "parsing and wasming...\n";
+  AllocatingModule wasm;
+  S2WasmBuilder s2wasm(wasm, input);
+
+  if (debug) std::cerr << "printing...\n";
+  std::cout << wasm;
+
+  if (debug) std::cerr << "done.\n";
+}
+