gprof/source.c

   1 /* source.c - Keep track of source files.
   2
   3    Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
   4
   5    This file is part of GNU Binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21 \f
  22 #include "gprof.h"
  23 #include "libiberty.h"
  24 #include "filenames.h"
  25 #include "search_list.h"
  26 #include "source.h"
  27
  28 #define EXT_ANNO "-ann"         /* Postfix of annotated files.  */
  29
  30 /* Default option values.  */
  31 boolean create_annotation_files = false;
  32
  33 Search_List src_search_list = {0, 0};
  34 Source_File *first_src_file = 0;
  35
  36
  37 Source_File *
  38 source_file_lookup_path (path)
  39      const char *path;
  40 {
  41   Source_File *sf;
  42
  43   for (sf = first_src_file; sf; sf = sf->next)
  44     {
  45       if (FILENAME_CMP (path, sf->name) == 0)
  46         break;
  47     }
  48
  49   if (!sf)
  50     {
  51       /* Create a new source file descriptor.  */
  52       sf = (Source_File *) xmalloc (sizeof (*sf));
  53
  54       memset (sf, 0, sizeof (*sf));
  55
  56       sf->name = xstrdup (path);
  57       sf->next = first_src_file;
  58       first_src_file = sf;
  59     }
  60
  61   return sf;
  62 }
  63
  64
  65 Source_File *
  66 source_file_lookup_name (filename)
  67      const char *filename;
  68 {
  69   const char *fname;
  70   Source_File *sf;
  71
  72   /* The user cannot know exactly how a filename will be stored in
  73      the debugging info (e.g., ../include/foo.h
  74      vs. /usr/include/foo.h).  So we simply compare the filename
  75      component of a path only.  */
  76   for (sf = first_src_file; sf; sf = sf->next)
  77     {
  78       fname = strrchr (sf->name, '/');
  79
  80       if (fname)
  81         ++fname;
  82       else
  83         fname = sf->name;
  84
  85       if (FILENAME_CMP (filename, fname) == 0)
  86         break;
  87     }
  88
  89   return sf;
  90 }
  91
  92
  93 FILE *
  94 annotate_source (sf, max_width, annote, arg)
  95      Source_File *sf;
  96      unsigned int max_width;
  97      void (*annote) PARAMS ((char *, unsigned int, int, void *));
  98      void *arg;
  99 {
 100   static boolean first_file = true;
 101   int i, line_num, nread;
 102   boolean new_line;
 103   char buf[8192];
 104   char fname[PATH_MAX];
 105   char *annotation, *name_only;
 106   FILE *ifp, *ofp;
 107   Search_List_Elem *sle = src_search_list.head;
 108
 109   /* Open input file.  If open fails, walk along search-list until
 110      open succeeds or reaching end of list.  */
 111   strcpy (fname, sf->name);
 112
 113   if (IS_ABSOLUTE_PATH (sf->name))
 114     sle = 0;                    /* Don't use search list for absolute paths.  */
 115
 116   name_only = 0;
 117   while (true)
 118     {
 119       DBG (SRCDEBUG, printf ("[annotate_source]: looking for %s, trying %s\n",
 120                              sf->name, fname));
 121
 122       ifp = fopen (fname, FOPEN_RB);
 123       if (ifp)
 124         break;
 125
 126       if (!sle && !name_only)
 127         {
 128           name_only = strrchr (sf->name, '/');
 129 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 130           {
 131             char *bslash = strrchr (sf->name, '\\');
 132             if (name_only == NULL || (bslash != NULL && bslash > name_only))
 133               name_only = bslash;
 134             if (name_only == NULL && sf->name[0] != '\0' && sf->name[1] == ':')
 135               name_only = (char *)sf->name + 1;
 136           }
 137 #endif
 138           if (name_only)
 139             {
 140               /* Try search-list again, but this time with name only.  */
 141               ++name_only;
 142               sle = src_search_list.head;
 143             }
 144         }
 145
 146       if (sle)
 147         {
 148           strcpy (fname, sle->path);
 149 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 150           /* d:foo is not the same thing as d:/foo!  */
 151           if (fname[strlen (fname) - 1] == ':')
 152             strcat (fname, ".");
 153 #endif
 154           strcat (fname, "/");
 155
 156           if (name_only)
 157             strcat (fname, name_only);
 158           else
 159             strcat (fname, sf->name);
 160
 161           sle = sle->next;
 162         }
 163       else
 164         {
 165           if (errno == ENOENT)
 166             fprintf (stderr, _("%s: could not locate `%s'\n"),
 167                      whoami, sf->name);
 168           else
 169             perror (sf->name);
 170
 171           return 0;
 172         }
 173     }
 174
 175   ofp = stdout;
 176
 177   if (create_annotation_files)
 178     {
 179       /* Try to create annotated source file.  */
 180       const char *filename;
 181
 182       /* Create annotation files in the current working directory.  */
 183       filename = strrchr (sf->name, '/');
 184 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 185         {
 186           char *bslash = strrchr (sf->name, '\\');
 187           if (filename == NULL || (bslash != NULL && bslash > filename))
 188             filename = bslash;
 189           if (filename == NULL && sf->name[0] != '\0' && sf->name[1] == ':')
 190             filename = sf->name + 1;
 191         }
 192 #endif
 193       if (filename)
 194         ++filename;
 195       else
 196         filename = sf->name;
 197
 198       strcpy (fname, filename);
 199       strcat (fname, EXT_ANNO);
 200 #ifdef __MSDOS__
 201       {
 202         /* foo.cpp-ann can overwrite foo.cpp due to silent truncation of
 203            file names on 8+3 filesystems.  Their `stat' better be good...  */
 204         struct stat buf1, buf2;
 205
 206         if (stat (filename, &buf1) == 0
 207             && stat (fname, &buf2) == 0
 208             && buf1.st_ino == buf2.st_ino)
 209           {
 210             char *dot = strrchr (fname, '.');
 211
 212             if (dot)
 213               *dot = '\0';
 214             strcat (fname, ".ann");
 215           }
 216       }
 217 #endif
 218       ofp = fopen (fname, "w");
 219
 220       if (!ofp)
 221         {
 222           perror (fname);
 223           return 0;
 224         }
 225     }
 226
 227   /* Print file names if output goes to stdout
 228      and there are more than one source file.  */
 229   if (ofp == stdout)
 230     {
 231       if (first_file)
 232         first_file = false;
 233       else
 234         fputc ('\n', ofp);
 235
 236       if (first_output)
 237         first_output = false;
 238       else
 239         fprintf (ofp, "\f\n");
 240
 241       fprintf (ofp, _("*** File %s:\n"), sf->name);
 242     }
 243
 244   annotation = xmalloc (max_width + 1);
 245   line_num = 1;
 246   new_line = true;
 247
 248   while ((nread = fread (buf, 1, sizeof (buf), ifp)) > 0)
 249     {
 250       for (i = 0; i < nread; ++i)
 251         {
 252           if (new_line)
 253             {
 254               (*annote) (annotation, max_width, line_num, arg);
 255               fputs (annotation, ofp);
 256               ++line_num;
 257               new_line = false;
 258             }
 259
 260           new_line = (buf[i] == '\n');
 261           fputc (buf[i], ofp);
 262         }
 263     }
 264
 265   free (annotation);
 266   return ofp;
 267 }