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/* source.c - Keep track of source files.

   Copyright 2000, 2001, 2002, 2004, 2007 Free Software Foundation, Inc.

   This file is part of GNU Binutils.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA

   02110-1301, USA.  */

#include "gprof.h"

#include "libiberty.h"

#include "filenames.h"

#include "search_list.h"

#include "source.h"

#define EXT_ANNO "-ann"         /* Postfix of annotated files.  */

/* Default option values.  */

bfd_boolean create_annotation_files = FALSE;

Search_List src_search_list = {0, 0};

Source_File *first_src_file = 0;

Source_File *

source_file_lookup_path (const char *path)

{

  Source_File *sf;

  for (sf = first_src_file; sf; sf = sf->next)

    {

      if (FILENAME_CMP (path, sf->name) == 0)

        break;

    }

  if (!sf)

    {

      /* Create a new source file descriptor.  */

      sf = (Source_File *) xmalloc (sizeof (*sf));

      memset (sf, 0, sizeof (*sf));

      sf->name = xstrdup (path);

      sf->next = first_src_file;

      first_src_file = sf;

    }

  return sf;

}

Source_File *

source_file_lookup_name (const char *filename)

{

  const char *fname;

  Source_File *sf;

  /* The user cannot know exactly how a filename will be stored in

     the debugging info (e.g., ../include/foo.h

     vs. /usr/include/foo.h).  So we simply compare the filename

     component of a path only.  */

  for (sf = first_src_file; sf; sf = sf->next)

    {

      fname = strrchr (sf->name, '/');

      if (fname)

        ++fname;

      else

        fname = sf->name;

      if (FILENAME_CMP (filename, fname) == 0)

        break;

    }

  return sf;

}

FILE *

annotate_source (Source_File *sf, unsigned int max_width,

     void (*annote) (char *, unsigned int, int, void *),

     void *arg)

{

  static bfd_boolean first_file = TRUE;

  int i, line_num, nread;

  bfd_boolean new_line;

  char buf[8192];

  char fname[PATH_MAX];

  char *annotation, *name_only;

  FILE *ifp, *ofp;

  Search_List_Elem *sle = src_search_list.head;

  /* Open input file.  If open fails, walk along search-list until

     open succeeds or reaching end of list.  */

  strcpy (fname, sf->name);

  if (IS_ABSOLUTE_PATH (sf->name))

    sle = 0;                     /* Don't use search list for absolute paths.  */

  name_only = 0;

  while (TRUE)

    {

      DBG (SRCDEBUG, printf ("[annotate_source]: looking for %s, trying %s\n",

                             sf->name, fname));

      ifp = fopen (fname, FOPEN_RB);

      if (ifp)

        break;

      if (!sle && !name_only)

        {

          name_only = strrchr (sf->name, '/');

#ifdef HAVE_DOS_BASED_FILE_SYSTEM

          {

            char *bslash = strrchr (sf->name, '\\');

            if (name_only == NULL || (bslash != NULL && bslash > name_only))

              name_only = bslash;

            if (name_only == NULL && sf->name[0] != '\0' && sf->name[1] == ':')

              name_only = (char *)sf->name + 1;

          }

#endif

          if (name_only)

            {

              /* Try search-list again, but this time with name only.  */

              ++name_only;

              sle = src_search_list.head;

            }

        }

      if (sle)

        {

          strcpy (fname, sle->path);

#ifdef HAVE_DOS_BASED_FILE_SYSTEM

          /* d:foo is not the same thing as d:/foo!  */

          if (fname[strlen (fname) - 1] == ':')

            strcat (fname, ".");

#endif

          strcat (fname, "/");

          if (name_only)

            strcat (fname, name_only);

          else

            strcat (fname, sf->name);

          sle = sle->next;

        }

      else

        {

          if (errno == ENOENT)

            fprintf (stderr, _("%s: could not locate `%s'\n"),

                     whoami, sf->name);

          else

            perror (sf->name);

          return 0;

        }

    }

  ofp = stdout;

  if (create_annotation_files)

    {

      /* Try to create annotated source file.  */

      const char *filename;

      /* Create annotation files in the current working directory.  */

      filename = strrchr (sf->name, '/');

#ifdef HAVE_DOS_BASED_FILE_SYSTEM

        {

          char *bslash = strrchr (sf->name, '\\');

          if (filename == NULL || (bslash != NULL && bslash > filename))

            filename = bslash;

          if (filename == NULL && sf->name[0] != '\0' && sf->name[1] == ':')

            filename = sf->name + 1;

        }

#endif

      if (filename)

        ++filename;

      else

        filename = sf->name;

      strcpy (fname, filename);

      strcat (fname, EXT_ANNO);

#ifdef __MSDOS__

      {

        /* foo.cpp-ann can overwrite foo.cpp due to silent truncation of

           file names on 8+3 filesystems.  Their `stat' better be good...  */

        struct stat buf1, buf2;

        if (stat (filename, &buf1) == 0

            && stat (fname, &buf2) == 0

            && buf1.st_ino == buf2.st_ino)

          {

            char *dot = strrchr (fname, '.');

            if (dot)

              *dot = '\0';

            strcat (fname, ".ann");

          }

      }

#endif

      ofp = fopen (fname, "w");

      if (!ofp)

        {

          perror (fname);

          return 0;

        }

    }

  /* Print file names if output goes to stdout

     and there are more than one source file.  */

  if (ofp == stdout)

    {

      if (first_file)

        first_file = FALSE;

      else

        fputc ('\n', ofp);

      if (first_output)

        first_output = FALSE;

      else

        fprintf (ofp, "\f\n");

      fprintf (ofp, _("*** File %s:\n"), sf->name);

    }

  annotation = xmalloc (max_width + 1);

  line_num = 1;

  new_line = TRUE;

  while ((nread = fread (buf, 1, sizeof (buf), ifp)) > 0)

    {

      for (i = 0; i < nread; ++i)

        {

          if (new_line)

            {

              (*annote) (annotation, max_width, line_num, arg);

              fputs (annotation, ofp);

              ++line_num;

              new_line = FALSE;

            }

          new_line = (buf[i] == '\n');

          fputc (buf[i], ofp);

        }

    }

  free (annotation);

  return ofp;

}