Re: [RFA] Fix file name generation in edit_command (was: Ver 6.3 edit command failing)

["Eli Zaretskii" <eliz@gnu.org>]

> Date: Wed, 27 Apr 2005 10:36:20 -0400
> From: Daniel Jacobowitz <drow@false.org>
> Cc: bug-gdb@rich-paul.net, bug-gdb@gnu.org, gdb-patches@sources.redhat.com
> 
> I can simplify this a whole lot further :-)
> 
> You should use symtab_to_fullname.  Then all the fallback logic is
> unnecessary; if symtab_to_fullname fails, GDB does not know where the
> file is.

Thanks for the tip.  Here's the revised patch:


2005-04-27  Eli Zaretskii  <eliz@gnu.org>

	* cli/cli-cmds.c (edit_command): If symtab->fullname is not yet
	set, use symtab_to_fullname , instead of trying to do its job.

--- gdb/cli/cli-cmds.c~0	2005-03-26 16:18:14.000000000 +0300
+++ gdb/cli/cli-cmds.c	2005-04-27 18:37:34.000000000 +0300
@@ -554,7 +554,7 @@ edit_command (char *arg, int from_tty)
   int cmdlen, log10;
   unsigned m;
   char *editor;
-  char *p;
+  char *p, *fn;
 
   /* Pull in the current default source line if necessary */
   if (arg == 0)
@@ -627,23 +627,26 @@ edit_command (char *arg, int from_tty)
 
   if ((editor = (char *) getenv ("EDITOR")) == NULL)
       editor = "/bin/ex";
-  
+
   /* Approximate base-10 log of line to 1 unit for digit count */
   for(log10=32, m=0x80000000; !(sal.line & m) && log10>0; log10--, m=m>>1);
   log10 = 1 + (int)((log10 + (0 == ((m-1) & sal.line)))/3.32192809);
 
-  cmdlen = strlen(editor) + 1
-         + (NULL == sal.symtab->dirname ? 0 : strlen(sal.symtab->dirname) + 1)
-	 + (NULL == sal.symtab->filename? 0 : strlen(sal.symtab->filename)+ 1)
-	 + log10 + 2;
-  
+  /* If we don't already know the full absolute file name of the
+     source file, find it now.  */
+  if (NULL == sal.symtab->fullname)
+    {
+      fn = symtab_to_fullname (sal.symtab);
+      if (NULL == fn)
+	fn = "unknown";
+    }
+  else
+    fn = sal.symtab->fullname;
+
+  /*         $EDITOR      blank  +NN  blank    file      \0 */
+  cmdlen = strlen(editor) + 1 + log10 + 2 +  strlen(fn) + 1;
   p = xmalloc(cmdlen);
-  sprintf(p,"%s +%d %s%s",editor,sal.line,
-     (NULL == sal.symtab->dirname ? "./" :
-        (NULL != sal.symtab->filename && *(sal.symtab->filename) != '/') ?
-	   sal.symtab->dirname : ""),
-     (NULL == sal.symtab->filename ? "unknown" : sal.symtab->filename)
-  );
+  sprintf (p, "%s +%d %s", editor, sal.line, fn);
   shell_escape(p, from_tty);
 
   xfree(p);