properly attach '.woff2' to filenames without suffix, don't use outfilename in woff2_info

Author: rcanavan

src/woff2_compress.cc

@@ -21,7 +21,14 @@ int main(int argc, char **argv) {
   }
 
   string filename(argv[1]);
-  string outfilename = filename.substr(0, filename.find_last_of(".")) + ".woff2";
+  int lastdot;
+  string outfilename;
+  if ((lastdot = filename.find_last_of(".")) > filename.find_last_of("/")) {
+    outfilename = filename.substr(0, lastdot) + ".woff2";
+  } else {
+    outfilename = filename + ".woff2";
+  }
+
   fprintf(stdout, "Processing %s => %s\n",
     filename.c_str(), outfilename.c_str());
   string input = woff2::GetFileContent(filename);

src/woff2_decompress.cc

@@ -22,7 +22,13 @@ int main(int argc, char **argv) {
   }
 
   string filename(argv[1]);
-  string outfilename = filename.substr(0, filename.find_last_of(".")) + ".ttf";
+  int lastdot;
+  string outfilename;
+  if ((lastdot = filename.find_last_of(".")) > filename.find_last_of("/")) {
+    outfilename = filename.substr(0, lastdot) + ".woff2";
+  } else {
+    outfilename = filename + ".woff2";
+  }
 
   // Note: update woff2_dec_fuzzer_new_entry.cc if this pattern changes.
   string input = woff2::GetFileContent(filename);

src/woff2_info.cc

@@ -37,9 +37,9 @@ int main(int argc, char **argv) {
   }
 
   string filename(argv[1]);
-  string outfilename = filename.substr(0, filename.find_last_of(".")) + ".woff2";
-  fprintf(stdout, "Processing %s => %s\n",
-    filename.c_str(), outfilename.c_str());
+
+  fprintf(stdout, "Processing %s\n",
+    filename.c_str());
   string input = woff2::GetFileContent(filename);
 
   woff2::Buffer file(reinterpret_cast<const uint8_t*>(input.data()),