Adding -file-list-exec-source-file command to GDB/MI

[Bob Rossi <bob_rossi at cox dot net>]

This change essentially adds the command -file-list-exec-source-file to
the mi commands.

* mi-cmd-file.c:    Added file to implement mi file commands.
* mi-getopt.c:      Added mi_valid_noargs to verify if a set of
                    parameters passed to an MI function has no arguments
* mi-getopt.h:      Prototyped mi_valid_noargs
* mi-cmds.c:        Added -file-list-exec-source-file command.
* mi-cmds.h:        Added -file-list-exec-source-file to proto list.
* doc/gdb.texinfo:  Document -file-list-exec-source-file.
* mi-file.exp:      Added testcase to test -file-list-exec-source-file.

Thanks,
Bob Rossi

Index: Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/Makefile.in,v
retrieving revision 1.357
diff -w -u -r1.357 Makefile.in
--- Makefile.in	2 Apr 2003 03:02:46 -0000	1.357
+++ Makefile.in	2 Apr 2003 19:30:31 -0000
@@ -168,14 +168,14 @@
 SUBDIR_MI_OBS = \
 	mi-out.o mi-console.o \
 	mi-cmds.o mi-cmd-env.o mi-cmd-var.o mi-cmd-break.o mi-cmd-stack.o \
-	mi-cmd-disas.o \
+	mi-cmd-file.o mi-cmd-disas.o \
 	mi-interp.o \
 	mi-main.o mi-parse.o mi-getopt.o
 SUBDIR_MI_SRCS = \
 	mi/mi-out.c mi/mi-console.c \
 	mi/mi-cmds.c mi/mi-cmd-env.c \
 	mi/mi-cmd-var.c mi/mi-cmd-break.c mi/mi-cmd-stack.c \
-	mi/mi-cmd-disas.c \
+	mi/mi-cmd-file.c mi/mi-cmd-disas.c \
 	mi/mi-interp.c \
 	mi/mi-main.c mi/mi-parse.c mi/mi-getopt.c
 SUBDIR_MI_DEPS =
@@ -2546,6 +2546,10 @@
 	$(ui_out_h) $(mi_out_h) $(breakpoint_h) $(gdb_string_h) \
 	$(mi_getopt_h) $(gdb_events_h) $(gdb_h)
 	$(CC) -c $(INTERNAL_CFLAGS) $(srcdir)/mi/mi-cmd-break.c
+mi-cmd-file.o: $(srcdir)/mi/mi-cmd-file.c $(defs_h) $(mi_cmds_h) \
+	$(ui_out_h) $(mi_out_h) $(breakpoint_h) $(gdb_string_h) \
+	$(mi_getopt_h) $(gdb_events_h) $(gdb_h)
+	$(CC) -c $(INTERNAL_CFLAGS) $(srcdir)/mi/mi-cmd-file.c
 mi-cmd-disas.o: $(srcdir)/mi/mi-cmd-disas.c $(defs_h) $(target_h) $(value_h) \
 	$(mi_cmds_h) $(mi_getopt_h) $(ui_out_h) $(gdb_string_h) $(disasm_h)
 	$(CC) -c $(INTERNAL_CFLAGS) $(srcdir)/mi/mi-cmd-disas.c
Index: doc/gdb.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdb.texinfo,v
retrieving revision 1.154
diff -w -u -r1.154 gdb.texinfo
--- doc/gdb.texinfo	27 Mar 2003 15:17:34 -0000	1.154
+++ doc/gdb.texinfo	2 Apr 2003 19:30:57 -0000
@@ -16337,6 +16337,32 @@
 N.A.
 
 
+ at subheading The @code{-file-list-exec-source-file} Command
+ at findex -file-list-exec-source-file
+
+ at subsubheading Synopsis
+
+ at smallexample
+ -file-list-exec-source-file
+ at end smallexample
+
+List the line number, the current source file, and the absolute path 
+to the current source file for the current executable.
+
+ at subsubheading @value{GDBN} Command
+
+There's no @value{GDBN} command which directly corresponds to this one.
+
+ at subsubheading Example
+
+ at smallexample
+(@value{GDBP})
+123-file-list-exec-source-file
+123^done,line="1",file="foo.c",fullname="/home/bar/foo.c"
+(@value{GDBP})
+ at end smallexample
+
+
 @subheading The @code{-file-list-exec-source-files} Command
 @findex -file-list-exec-source-files
 
Index: mi/mi-cmds.c
===================================================================
RCS file: /cvs/src/src/gdb/mi/mi-cmds.c,v
retrieving revision 1.10
diff -w -u -r1.10 mi-cmds.c
--- mi/mi-cmds.c	6 Feb 2003 01:19:12 -0000	1.10
+++ mi/mi-cmds.c	2 Apr 2003 19:30:57 -0000
@@ -80,6 +80,7 @@
   {"file-exec-and-symbols", "file %s", 0},
   {"file-exec-file", "exec-file %s", 0},
   {"file-list-exec-sections", 0, 0},
+  {"file-list-exec-source-file", 0, 0, mi_cmd_file_list_exec_source_file},
   {"file-list-exec-source-files", 0, 0},
   {"file-list-shared-libraries", 0, 0},
   {"file-list-symbol-files", 0, 0},
Index: mi/mi-cmds.h
===================================================================
RCS file: /cvs/src/src/gdb/mi/mi-cmds.h,v
retrieving revision 1.7
diff -w -u -r1.7 mi-cmds.h
--- mi/mi-cmds.h	6 Feb 2003 01:19:12 -0000	1.7
+++ mi/mi-cmds.h	2 Apr 2003 19:30:58 -0000
@@ -80,6 +80,7 @@
 extern mi_cmd_args_ftype mi_cmd_exec_step_instruction;
 extern mi_cmd_args_ftype mi_cmd_exec_until;
 extern mi_cmd_args_ftype mi_cmd_exec_interrupt;
+extern mi_cmd_argv_ftype mi_cmd_file_list_exec_source_file;
 extern mi_cmd_argv_ftype mi_cmd_gdb_exit;
 extern mi_cmd_argv_ftype mi_cmd_interpreter_exec;
 extern mi_cmd_argv_ftype mi_cmd_stack_info_depth;
Index: mi/mi-getopt.c
===================================================================
RCS file: /cvs/src/src/gdb/mi/mi-getopt.c,v
retrieving revision 1.6
diff -w -u -r1.6 mi-getopt.c
--- mi/mi-getopt.c	6 Mar 2001 08:21:45 -0000	1.6
+++ mi/mi-getopt.c	2 Apr 2003 19:30:58 -0000
@@ -74,3 +74,19 @@
     }
   error ("%s: Unknown option ``%s''", prefix, arg + 1);
 }
+
+int 
+mi_valid_noargs(const char *prefix, int argc, char **argv) 
+{
+  int optind = 0;
+  char *optarg;
+  static struct mi_opt opts[] =
+  {
+    0
+  };
+
+  if ( mi_getopt(prefix, argc, argv, opts, &optind, &optarg) == -1 )
+    return 1;
+  else
+    return 0;
+}
Index: mi/mi-getopt.h
===================================================================
RCS file: /cvs/src/src/gdb/mi/mi-getopt.h,v
retrieving revision 1.4
diff -w -u -r1.4 mi-getopt.h
--- mi/mi-getopt.h	6 Mar 2001 08:21:45 -0000	1.4
+++ mi/mi-getopt.h	2 Apr 2003 19:30:58 -0000
@@ -57,4 +57,24 @@
 
 struct mi_opt;
 
+/* mi_valid_noargs
+   
+   Determines if ARGC/ARGV are a valid set of parameters to satisfy 
+   an MI function that is not supposed to recieve any arguments.
+   
+   An MI function that should not recieve arguments can still be 
+   passed parameters after the special option '--' such as below.
+
+   Example: The MI function -exec-run takes no args.
+   However, the client may pass '-exec-run -- -a ...'
+   See PR-783
+
+   PREFIX is passed to mi_getopt for an error message.
+    
+   This function Returns 1 if the parameter pair ARGC/ARGV are valid
+   for an MI function that takes no arguments. Otherwise, it returns 0
+   and the appropriate error message is displayed by mi_getopt.  */
+
+extern int mi_valid_noargs (const char *prefix, int argc, char **argv);
+				
 #endif

/* MI Command Set - breakpoint and watchpoint commands.
   Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
   Contributed by Cygnus Solutions (a Red Hat company).

   This file is part of GDB.

   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 2 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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include "mi-cmds.h"
#include "mi-getopt.h"
#include "ui-out.h"
#include "symtab.h"
#include "source.h"

/* Return to the client the absolute path and line number of the 
   current file being executed. */

enum mi_cmd_result
mi_cmd_file_list_exec_source_file(char *command, char **argv, int argc)
{
  struct symtab_and_line st;
  int optind = 0;
  char *optarg;
  
  if ( !mi_valid_noargs("mi_cmd_file_list_exec_source_file", argc, argv) )
    error ("mi_cmd_file_list_exec_source_file: Usage: No args");

  
  /* Set the default file and line, also get them */
  set_default_source_symtab_and_line();
  st = get_current_source_symtab_and_line();

  /* We should always get a symtab. 
     Apparently, filename does not need to be tested for NULL.
     The documentation in symtab.h suggests it will always be correct */
  if (!st.symtab)
    error ("mi_cmd_file_list_exec_source_file: No symtab");

  /* Extract the fullname if it is not known yet */
  if (st.symtab->fullname == NULL)
    symtab_to_filename (st.symtab);

  /* We may not be able to open the file (not available). */
  if (st.symtab->fullname == NULL)
    error ("mi_cmd_file_list_exec_source_file: File not found");

  /* Print to the user the line, filename and fullname */
  ui_out_field_int (uiout, "line", st.line);
  ui_out_field_string (uiout, "file", st.symtab->filename);
  ui_out_field_string (uiout, "fullname", st.symtab->fullname);

  return MI_CMD_DONE;
}

Attachment: mi-file.exp
Description: Text document