19990502 sourceware import

1 files changed, 223 insertions, 0 deletions

diff --git a/gprof/source.c b/gprof/source.c
new file mode 100644
index 0000000000..4901a04b03
--- /dev/null
+++ b/gprof/source.c
@@ -0,0 +1,223 @@
+/*
+ * Keeps track of source files.
+ */
+#include "gprof.h"
+#include "libiberty.h"
+#include "search_list.h"
+#include "source.h"
+
+#define EXT_ANNO "-ann"		/* postfix of annotated files */
+
+/*
+ * Default option values:
+ */
+bool create_annotation_files = FALSE;
+
+Search_List src_search_list =
+{0, 0};
+Source_File *first_src_file = 0;
+
+
+Source_File *
+DEFUN (source_file_lookup_path, (path), const char *path)
+{
+  Source_File *sf;
+
+  for (sf = first_src_file; sf; sf = sf->next)
+    {
+      if (strcmp (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 *
+DEFUN (source_file_lookup_name, (filename), 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 (strcmp (filename, fname) == 0)
+	{
+	  break;
+	}
+    }
+  return sf;
+}
+
+
+FILE *
+DEFUN (annotate_source, (sf, max_width, annote, arg),
+       Source_File * sf AND int max_width
+       AND void (*annote) PARAMS ((char *buf, int w, int l, void *arg))
+       AND void *arg)
+{
+  static bool first_file = TRUE;
+  int i, line_num, nread;
+  bool 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 (sf->name[0] == '/')
+    {
+      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, '/');
+	  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);
+	  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, '/');
+      if (filename)
+	{
+	  ++filename;
+	}
+      else
+	{
+	  filename = sf->name;
+	}
+
+      strcpy (fname, filename);
+      strcat (fname, EXT_ANNO);
+      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;
+}