// Copyright (c) 2006, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// dump_syms_tool.m: Command line tool that uses the DumpSymbols class.
// TODO(waylonis): accept stdin

#include <unistd.h>
#include <mach-o/arch.h>

#include "dump_syms.h"
#include "common/mac/macho_utilities.h"

typedef struct {
  NSString *srcPath;
  NSString *arch;
  NSString *uuidStr;
  BOOL result;
} Options;

//=============================================================================
static void Start(Options *options) {
  DumpSymbols *dump = [[DumpSymbols alloc]
    initWithContentsOfFile:options->srcPath];
  
  if (!dump) {
    fprintf(stderr, "%s is not a valid Mach-o file\n",
            [options->srcPath fileSystemRepresentation]);
    options->result = NO;
    return;
  }

  if (![dump setArchitecture:options->arch]) {
    fprintf(stderr, "Architecture: %s not available in %s\n", 
            [options->arch UTF8String],
            [options->srcPath fileSystemRepresentation]);
    options->result = NO;
    return;
  }
  
  options->result = [dump writeSymbolFile:@"-"];
}

//=============================================================================
static void Usage(int argc, const char *argv[]) {
  fprintf(stderr, "Output a Breakpad symbol file from a Mach-o file.\n");
  fprintf(stderr, "Usage: %s [-a ppc|i386|x86] <Mach-o file>\n",
          argv[0]);
  fprintf(stderr, "\t-a: Architecture type [default: native]\n");
  fprintf(stderr, "\t-h: Usage\n");
  fprintf(stderr, "\t-?: Usage\n");
}

//=============================================================================
static void SetupOptions(int argc, const char *argv[], Options *options) {
  extern int optind;
  const NXArchInfo *localArchInfo = NXGetLocalArchInfo();
  char ch;

  if (localArchInfo) {
    if (localArchInfo->cputype & CPU_ARCH_ABI64)
      options->arch = (localArchInfo->cputype == CPU_TYPE_POWERPC64) ? @"ppc64":
        @"x86_64";
    else
      options->arch = (localArchInfo->cputype == CPU_TYPE_POWERPC) ? @"ppc" :
        @"x86";
  }

  while ((ch = getopt(argc, (char * const *)argv, "a:h?")) != -1) {
    switch (ch) {
      case 'a':
        if (strcmp("ppc", optarg) == 0)
          options->arch = @"ppc";
        else if (strcmp("x86", optarg) == 0 || strcmp("i386", optarg) == 0)
          options->arch = @"x86";
        else if (strcmp("ppc64", optarg) == 0)
          options->arch = @"ppc64";
        else if (strcmp("x86_64", optarg) == 0)
          options->arch = @"x86_64";
        else {
          fprintf(stderr, "%s: Invalid architecture: %s\n", argv[0], optarg);
          Usage(argc, argv);
          exit(1);
        }
          break;
      case '?':
      case 'h':
        Usage(argc, argv);
        exit(0);
        break;
    }
  }
  
  if ((argc - optind) != 1) {
    fprintf(stderr, "Must specify Mach-o file\n");
    Usage(argc, argv);
    exit(1);
  }

  options->srcPath = [[NSFileManager defaultManager]
    stringWithFileSystemRepresentation:argv[optind]
                                length:strlen(argv[optind])];
}

//=============================================================================
int main (int argc, const char * argv[]) {
  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
  Options options;

  bzero(&options, sizeof(Options));
  SetupOptions(argc, argv, &options);
  Start(&options);

  [pool release];

  return !options.result;
}
