Support command line parameters to specify a url to file name mapping. This is used during snapsh...

bin/process_script.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Handle dart scripts.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
@@ skipping 39 matching lines @@
   free(path);
   char* canonical_filename = File::GetCanonicalPath(absolute_filename);
   if (canonical_filename == NULL) {
     return absolute_filename;
   }
   free(absolute_filename);
   return canonical_filename;
 }
 
 
-static Dart_Handle ReadStringFromFile(const char* filename) {
+Dart_Handle ReadStringFromFile(const char* filename) {
   File* file = File::Open(filename, false);
   if (file == NULL) {
     const char* format = "Unable to open file: %s";
     intptr_t len = snprintf(NULL, 0, format, filename);
     // TODO(iposva): Allocate from the zone instead of leaking error string
     // here. On the other hand the binary is about the exit anyway.
     char* error_msg = reinterpret_cast<char*>(malloc(len + 1));
     snprintf(error_msg, len + 1, format, filename);
     return Dart_Error(error_msg);
   }
   intptr_t len = file->Length();
   char* text_buffer = reinterpret_cast<char*>(malloc(len + 1));
   if (text_buffer == NULL) {
     delete file;
     return Dart_Error("Unable to allocate buffer");
   }
   if (!file->ReadFully(text_buffer, len)) {
     delete file;
     return Dart_Error("Unable to fully read contents");
   }
   text_buffer[len] = '\0';
   delete file;
   Dart_Handle str = Dart_NewString(text_buffer);
   free(text_buffer);
   return str;
 }
 
 
-static Dart_Handle LibraryTagHandlerHelper(Dart_LibraryTag tag,
-                                           Dart_Handle library,
-                                           Dart_Handle url,
-                                           bool import_builtin_lib) {
+Dart_Handle LibraryTagHandler(Dart_LibraryTag tag,
+                              Dart_Handle library,
+                              Dart_Handle url,
+                              bool import_builtin_lib) {
   if (!Dart_IsLibrary(library)) {
     return Dart_Error("not a library");
   }
   if (!Dart_IsString8(url)) {
     return Dart_Error("url is not a string");
   }
   const char* url_chars = NULL;
   Dart_Handle result = Dart_StringToCString(url, &url_chars);
   if (!Dart_IsValid(result)) {
     return Dart_Error("accessing url characters failed");
@@ skipping 39 matching lines @@
   } else if (tag == kSourceTag) {
     return Dart_LoadSource(library, url, source);
   }
   return Dart_Error("wrong tag");
 }
 
 static Dart_Handle MainLibraryTagHandler(Dart_LibraryTag tag,
                                          Dart_Handle library,
                                          Dart_Handle url) {
   const bool kImportBuiltinLib = true;  // Import builtin library.
-  return LibraryTagHandlerHelper(tag, library, url, kImportBuiltinLib);
+  return LibraryTagHandler(tag, library, url, kImportBuiltinLib);
 }
 
 
 static Dart_Handle CreateSnapshotLibraryTagHandler(Dart_LibraryTag tag,
                                                    Dart_Handle library,
                                                    Dart_Handle url) {
   const bool kDontImportBuiltinLib = false;  // Do not import builtin lib.
-  return LibraryTagHandlerHelper(tag, library, url, kDontImportBuiltinLib);
+  return LibraryTagHandler(tag, library, url, kDontImportBuiltinLib);
 }
 
 
 Dart_Handle LoadScript(const char* script_name) {
   Dart_Handle source = ReadStringFromFile(script_name);
   if (!Dart_IsValid(source)) {
     return source;
   }
   Dart_Handle url = Dart_NewString(script_name);
 
   return Dart_LoadScript(url, source, MainLibraryTagHandler);
 }
 
 
 Dart_Handle LoadSnapshotCreationScript(const char* script_name) {
   Dart_Handle source = ReadStringFromFile(script_name);
   if (!Dart_IsValid(source)) {
     return source;
   }
   Dart_Handle url = Dart_NewString(script_name);
 
   return Dart_LoadScript(url, source, CreateSnapshotLibraryTagHandler);
 }