binutils-gdb/gdb/ui-out.c

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/* Output generating routines for GDB.
Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions.
Written by Fernando Nasser for Cygnus.
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 "gdb_string.h"
#include "expression.h" /* For language.h */
#include "language.h"
#include "ui-out.h"
#include "gdb_assert.h"
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/* Convenience macro for allocting typesafe memory. */
#undef XMALLOC
#define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
/* table header structures */
struct ui_out_hdr
{
int colno;
int width;
int alignment;
char *colhdr;
struct ui_out_hdr *next;
};
/* Maintain a stack so that the info applicable to the inner most list
is always available. Stack/nested level 0 is reserved for the
top-level result. */
enum { MAX_UI_OUT_LEVELS = 5 };
struct ui_out_level
{
/* Count each field; the first element is for non-list fields */
int field_count;
};
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/* The ui_out structure */
/* Any change here requires a corresponding one in the initialization
of the default uiout, which is statically initialized */
struct ui_out
{
int flags;
/* specific implementation of ui-out */
struct ui_out_impl *impl;
struct ui_out_data *data;
/* if on, a table is being generated */
int table_flag;
/* if on, the body of a table is being generated */
int body_flag;
/* number of table columns (as specified in the table_begin call) */
int table_columns;
/* strinf identifying the table (as specified in the table_begin call) */
char *table_id;
/* Sub structure tracking the table depth. */
int level;
struct ui_out_level levels[MAX_UI_OUT_LEVELS];
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/* points to the first header (if any) */
struct ui_out_hdr *headerfirst;
/* points to the last header (if any) */
struct ui_out_hdr *headerlast;
/* points to header of next column to format */
struct ui_out_hdr *headercurr;
};
/* The current (inner most) level. */
static struct ui_out_level *
current_level (struct ui_out *uiout)
{
return &uiout->levels[uiout->level];
}
/* Create a new level, of TYPE. Return the new level's index. */
static int
push_level (struct ui_out *uiout,
const char *id)
{
struct ui_out_level *current;
/* We had better not overflow the buffer. */
uiout->level++;
gdb_assert (uiout->level > 0 && uiout->level < MAX_UI_OUT_LEVELS);
current = current_level (uiout);
current->field_count = 0;
return uiout->level;
}
/* Discard the current level, return the discarded level's index.
TYPE is the type of the level being discarded. */
static int
pop_level (struct ui_out *uiout)
{
/* We had better not underflow the buffer. */
gdb_assert (uiout->level > 0 && uiout->level < MAX_UI_OUT_LEVELS);
uiout->level--;
return uiout->level + 1;
}
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/* These are the default implementation functions */
static void default_table_begin (struct ui_out *uiout, int nbrofcols,
char *tblid);
static void default_table_body (struct ui_out *uiout);
static void default_table_end (struct ui_out *uiout);
static void default_table_header (struct ui_out *uiout, int width,
enum ui_align alig, char *colhdr);
static void default_list_begin (struct ui_out *uiout, int level,
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char *lstid);
static void default_list_end (struct ui_out *uiout, int level);
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static void default_field_int (struct ui_out *uiout, int fldno, int width,
enum ui_align alig, char *fldname, int value);
static void default_field_skip (struct ui_out *uiout, int fldno, int width,
enum ui_align alig, char *fldname);
static void default_field_string (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname,
const char *string);
static void default_field_fmt (struct ui_out *uiout, int fldno,
int width, enum ui_align align,
char *fldname, char *format, va_list args);
static void default_spaces (struct ui_out *uiout, int numspaces);
static void default_text (struct ui_out *uiout, char *string);
static void default_message (struct ui_out *uiout, int verbosity, char *format,
va_list args);
static void default_wrap_hint (struct ui_out *uiout, char *identstring);
static void default_flush (struct ui_out *uiout);
/* This is the default ui-out implementation functions vector */
struct ui_out_impl default_ui_out_impl =
{
default_table_begin,
default_table_body,
default_table_end,
default_table_header,
default_list_begin,
default_list_end,
default_field_int,
default_field_skip,
default_field_string,
default_field_fmt,
default_spaces,
default_text,
default_message,
default_wrap_hint,
default_flush
};
/* The default ui_out */
struct ui_out def_uiout =
{
0, /* flags */
&default_ui_out_impl, /* impl */
};
/* Pointer to current ui_out */
/* FIXME: This should not be a global, but something passed down from main.c
or top.c */
struct ui_out *uiout = &def_uiout;
/* These are the interfaces to implementation functions */
static void uo_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid);
static void uo_table_body (struct ui_out *uiout);
static void uo_table_end (struct ui_out *uiout);
static void uo_table_header (struct ui_out *uiout, int width,
enum ui_align align, char *colhdr);
static void uo_list_begin (struct ui_out *uiout, int level, char *lstid);
static void uo_list_end (struct ui_out *uiout, int level);
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static void uo_field_int (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname, int value);
static void uo_field_skip (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname);
static void uo_field_string (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname, const char *string);
static void uo_field_fmt (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname,
char *format, va_list args);
static void uo_spaces (struct ui_out *uiout, int numspaces);
static void uo_text (struct ui_out *uiout, char *string);
static void uo_message (struct ui_out *uiout, int verbosity,
char *format, va_list args);
static void uo_wrap_hint (struct ui_out *uiout, char *identstring);
static void uo_flush (struct ui_out *uiout);
/* Prototypes for local functions */
extern void _initialize_ui_out (void);
static void append_header_to_list (struct ui_out *uiout, int width, int alignment, char *colhdr);
static int get_curr_header (struct ui_out *uiout, int *colno, int *width,
int *alignment, char **colhdr);
static void clear_header_list (struct ui_out *uiout);
static void verify_field_proper_position (struct ui_out *uiout);
static void verify_field_alignment (struct ui_out *uiout, int fldno, int *width, int *alignment);
static void init_ui_out_state (struct ui_out *uiout);
/* exported functions (ui_out API) */
/* Mark beginning of a table */
void
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ui_out_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid)
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{
if (uiout->table_flag)
internal_error (__FILE__, __LINE__,
"tables cannot be nested; table_begin found before \
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previous table_end.");
uiout->table_flag = 1;
uiout->table_columns = nbrofcols;
if (tblid != NULL)
uiout->table_id = xstrdup (tblid);
else
uiout->table_id = NULL;
clear_header_list (uiout);
uo_table_begin (uiout, nbrofcols, uiout->table_id);
}
void
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ui_out_table_body (struct ui_out *uiout)
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{
if (!uiout->table_flag)
internal_error (__FILE__, __LINE__,
"table_body outside a table is not valid; it must be \
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after a table_begin and before a table_end.");
if (uiout->body_flag)
internal_error (__FILE__, __LINE__,
"extra table_body call not allowed; there must be \
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only one table_body after a table_begin and before a table_end.");
if (uiout->headercurr->colno != uiout->table_columns)
internal_error (__FILE__, __LINE__,
"number of headers differ from number of table \
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columns.");
uiout->body_flag = 1;
uiout->headercurr = uiout->headerfirst;
uo_table_body (uiout);
}
void
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ui_out_table_end (struct ui_out *uiout)
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{
if (!uiout->table_flag)
internal_error (__FILE__, __LINE__,
"misplaced table_end or missing table_begin.");
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uiout->body_flag = 0;
uiout->table_flag = 0;
uo_table_end (uiout);
if (uiout->table_id)
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xfree (uiout->table_id);
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clear_header_list (uiout);
}
void
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ui_out_table_header (struct ui_out *uiout, int width, enum ui_align alignment,
char *colhdr)
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{
if (!uiout->table_flag || uiout->body_flag)
internal_error (__FILE__, __LINE__,
"table header must be specified after table_begin \
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and before table_body.");
append_header_to_list (uiout, width, alignment, colhdr);
uo_table_header (uiout, width, alignment, colhdr);
}
void
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ui_out_list_begin (struct ui_out *uiout, char *lstid)
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{
int new_level;
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if (uiout->table_flag && !uiout->body_flag)
internal_error (__FILE__, __LINE__,
"table header or table_body expected; lists must be \
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specified after table_body.");
new_level = push_level (uiout, lstid);
if (uiout->table_flag && (new_level == 1))
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uiout->headercurr = uiout->headerfirst;
uo_list_begin (uiout, new_level, lstid);
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}
void
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ui_out_list_end (struct ui_out *uiout)
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{
int old_level = pop_level (uiout);
uo_list_end (uiout, old_level);
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}
static void
do_list_end (void *uiout)
{
ui_out_list_end (uiout);
}
struct cleanup *
make_cleanup_ui_out_list_end (struct ui_out *uiout)
{
return make_cleanup (do_list_end, uiout);
}
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void
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ui_out_field_int (struct ui_out *uiout, char *fldname, int value)
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{
int fldno;
int width;
int align;
struct ui_out_level *current = current_level (uiout);
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verify_field_proper_position (uiout);
current->field_count += 1;
fldno = current->field_count;
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verify_field_alignment (uiout, fldno, &width, &align);
uo_field_int (uiout, fldno, width, align, fldname, value);
}
void
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ui_out_field_core_addr (struct ui_out *uiout, char *fldname, CORE_ADDR address)
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{
char addstr[20];
/* FIXME-32x64: need a print_address_numeric with field width */
/* print_address_numeric (address, 1, local_stream); */
strcpy (addstr, local_hex_string_custom ((unsigned long) address, "08l"));
ui_out_field_string (uiout, fldname, addstr);
}
void
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ui_out_field_stream (struct ui_out *uiout, char *fldname, struct ui_stream *buf)
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{
long length;
char *buffer = ui_file_xstrdup (buf->stream, &length);
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struct cleanup *old_cleanup = make_cleanup (xfree, buffer);
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if (length > 0)
ui_out_field_string (uiout, fldname, buffer);
else
ui_out_field_skip (uiout, fldname);
ui_file_rewind (buf->stream);
do_cleanups (old_cleanup);
}
/* used to ommit a field */
void
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ui_out_field_skip (struct ui_out *uiout, char *fldname)
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{
int fldno;
int width;
int align;
struct ui_out_level *current = current_level (uiout);
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verify_field_proper_position (uiout);
current->field_count += 1;
fldno = current->field_count;
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verify_field_alignment (uiout, fldno, &width, &align);
uo_field_skip (uiout, fldno, width, align, fldname);
}
void
ui_out_field_string (struct ui_out *uiout,
char *fldname,
const char *string)
{
int fldno;
int width;
int align;
struct ui_out_level *current = current_level (uiout);
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verify_field_proper_position (uiout);
current->field_count += 1;
fldno = current->field_count;
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verify_field_alignment (uiout, fldno, &width, &align);
uo_field_string (uiout, fldno, width, align, fldname, string);
}
/* VARARGS */
void
ui_out_field_fmt (struct ui_out *uiout, char *fldname, char *format,...)
{
va_list args;
int fldno;
int width;
int align;
struct ui_out_level *current = current_level (uiout);
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verify_field_proper_position (uiout);
current->field_count += 1;
fldno = current->field_count;
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/* will not align, but has to call anyway */
verify_field_alignment (uiout, fldno, &width, &align);
va_start (args, format);
uo_field_fmt (uiout, fldno, width, align, fldname, format, args);
va_end (args);
}
void
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ui_out_spaces (struct ui_out *uiout, int numspaces)
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{
uo_spaces (uiout, numspaces);
}
void
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ui_out_text (struct ui_out *uiout, char *string)
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{
uo_text (uiout, string);
}
void
ui_out_message (struct ui_out *uiout, int verbosity, char *format,...)
{
va_list args;
va_start (args, format);
uo_message (uiout, verbosity, format, args);
va_end (args);
}
struct ui_stream *
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ui_out_stream_new (struct ui_out *uiout)
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{
struct ui_stream *tempbuf;
tempbuf = XMALLOC (struct ui_stream);
tempbuf->uiout = uiout;
tempbuf->stream = mem_fileopen ();
return tempbuf;
}
void
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ui_out_stream_delete (struct ui_stream *buf)
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{
ui_file_delete (buf->stream);
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xfree (buf);
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}
static void
do_stream_delete (void *buf)
{
ui_out_stream_delete (buf);
}
struct cleanup *
make_cleanup_ui_out_stream_delete (struct ui_stream *buf)
{
return make_cleanup (do_stream_delete, buf);
}
void
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ui_out_wrap_hint (struct ui_out *uiout, char *identstring)
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{
uo_wrap_hint (uiout, identstring);
}
void
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ui_out_flush (struct ui_out *uiout)
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{
uo_flush (uiout);
}
/* set the flags specified by the mask given */
int
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ui_out_set_flags (struct ui_out *uiout, int mask)
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{
int oldflags = uiout->flags;
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uiout->flags |= mask;
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return oldflags;
}
/* clear the flags specified by the mask given */
int
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ui_out_clear_flags (struct ui_out *uiout, int mask)
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{
int oldflags = uiout->flags;
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uiout->flags &= ~mask;
return oldflags;
}
/* test the flags against the mask given */
int
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ui_out_test_flags (struct ui_out *uiout, int mask)
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{
return (uiout->flags & mask);
}
/* obtain the current verbosity level (as stablished by the
'set verbositylevel' command */
int
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ui_out_get_verblvl (struct ui_out *uiout)
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{
/* FIXME: not implemented yet */
return 0;
}
#if 0
void
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ui_out_result_begin (struct ui_out *uiout, char *class)
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{
}
void
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ui_out_result_end (struct ui_out *uiout)
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{
}
void
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ui_out_info_begin (struct ui_out *uiout, char *class)
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{
}
void
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ui_out_info_end (struct ui_out *uiout)
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{
}
void
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ui_out_notify_begin (struct ui_out *uiout, char *class)
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{
}
void
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ui_out_notify_end (struct ui_out *uiout)
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{
}
void
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ui_out_error_begin (struct ui_out *uiout, char *class)
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{
}
void
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ui_out_error_end (struct ui_out *uiout)
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{
}
#endif
#if 0
void
gdb_error (ui_out * uiout, int severity, char *format,...)
{
va_list args;
}
void
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gdb_query (struct ui_out *uiout, int qflags, char *qprompt)
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{
}
#endif
/* default gdb-out hook functions */
static void
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default_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid)
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{
}
static void
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default_table_body (struct ui_out *uiout)
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{
}
static void
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default_table_end (struct ui_out *uiout)
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{
}
static void
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default_table_header (struct ui_out *uiout, int width, enum ui_align alignment,
char *colhdr)
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{
}
static void
default_list_begin (struct ui_out *uiout, int level, char *lstid)
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{
}
static void
default_list_end (struct ui_out *uiout, int level)
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{
}
static void
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default_field_int (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname, int value)
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{
}
static void
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default_field_skip (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname)
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{
}
static void
default_field_string (struct ui_out *uiout,
int fldno,
int width,
enum ui_align align,
char *fldname,
const char *string)
{
}
static void
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default_field_fmt (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname, char *format,
va_list args)
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{
}
static void
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default_spaces (struct ui_out *uiout, int numspaces)
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{
}
static void
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default_text (struct ui_out *uiout, char *string)
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{
}
static void
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default_message (struct ui_out *uiout, int verbosity, char *format,
va_list args)
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{
}
static void
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default_wrap_hint (struct ui_out *uiout, char *identstring)
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{
}
static void
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default_flush (struct ui_out *uiout)
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{
}
/* Interface to the implementation functions */
void
uo_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid)
{
if (!uiout->impl->table_begin)
return;
uiout->impl->table_begin (uiout, nbrofcols, tblid);
}
void
uo_table_body (struct ui_out *uiout)
{
if (!uiout->impl->table_body)
return;
uiout->impl->table_body (uiout);
}
void
uo_table_end (struct ui_out *uiout)
{
if (!uiout->impl->table_end)
return;
uiout->impl->table_end (uiout);
}
void
uo_table_header (struct ui_out *uiout, int width, enum ui_align align, char *colhdr)
{
if (!uiout->impl->table_header)
return;
uiout->impl->table_header (uiout, width, align, colhdr);
}
void
uo_list_begin (struct ui_out *uiout, int level, char *lstid)
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{
if (!uiout->impl->list_begin)
return;
uiout->impl->list_begin (uiout, level, lstid);
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}
void
uo_list_end (struct ui_out *uiout, int level)
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{
if (!uiout->impl->list_end)
return;
uiout->impl->list_end (uiout, level);
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}
void
uo_field_int (struct ui_out *uiout, int fldno, int width, enum ui_align align, char *fldname, int value)
{
if (!uiout->impl->field_int)
return;
uiout->impl->field_int (uiout, fldno, width, align, fldname, value);
}
void
uo_field_skip (struct ui_out *uiout, int fldno, int width, enum ui_align align, char *fldname)
{
if (!uiout->impl->field_skip)
return;
uiout->impl->field_skip (uiout, fldno, width, align, fldname);
}
void
uo_field_string (struct ui_out *uiout, int fldno, int width,
enum ui_align align, char *fldname, const char *string)
{
if (!uiout->impl->field_string)
return;
uiout->impl->field_string (uiout, fldno, width, align, fldname, string);
}
void
uo_field_fmt (struct ui_out *uiout, int fldno, int width, enum ui_align align, char *fldname, char *format, va_list args)
{
if (!uiout->impl->field_fmt)
return;
uiout->impl->field_fmt (uiout, fldno, width, align, fldname, format, args);
}
void
uo_spaces (struct ui_out *uiout, int numspaces)
{
if (!uiout->impl->spaces)
return;
uiout->impl->spaces (uiout, numspaces);
}
void
uo_text (struct ui_out *uiout, char *string)
{
if (!uiout->impl->text)
return;
uiout->impl->text (uiout, string);
}
void
uo_message (struct ui_out *uiout, int verbosity, char *format, va_list args)
{
if (!uiout->impl->message)
return;
uiout->impl->message (uiout, verbosity, format, args);
}
void
uo_wrap_hint (struct ui_out *uiout, char *identstring)
{
if (!uiout->impl->wrap_hint)
return;
uiout->impl->wrap_hint (uiout, identstring);
}
void
uo_flush (struct ui_out *uiout)
{
if (!uiout->impl->flush)
return;
uiout->impl->flush (uiout);
}
/* local functions */
/* list of column headers manipulation routines */
static void
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clear_header_list (struct ui_out *uiout)
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{
while (uiout->headerfirst != NULL)
{
uiout->headercurr = uiout->headerfirst;
uiout->headerfirst = uiout->headerfirst->next;
if (uiout->headercurr->colhdr != NULL)
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xfree (uiout->headercurr->colhdr);
xfree (uiout->headercurr);
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}
uiout->headerlast = NULL;
uiout->headercurr = NULL;
}
static void
append_header_to_list (struct ui_out *uiout,
int width,
int alignment,
char *colhdr)
{
struct ui_out_hdr *temphdr;
temphdr = XMALLOC (struct ui_out_hdr);
temphdr->width = width;
temphdr->alignment = alignment;
/* we have to copy the column title as the original may be an automatic */
if (colhdr != NULL)
{
temphdr->colhdr = xmalloc (strlen (colhdr) + 1);
strcpy (temphdr->colhdr, colhdr);
}
temphdr->next = NULL;
if (uiout->headerfirst == NULL)
{
temphdr->colno = 1;
uiout->headerfirst = temphdr;
uiout->headerlast = temphdr;
}
else
{
temphdr->colno = uiout->headerlast->colno + 1;
uiout->headerlast->next = temphdr;
uiout->headerlast = temphdr;
}
uiout->headercurr = uiout->headerlast;
}
/* returns 0 if there is no more headers */
static int
get_curr_header (struct ui_out *uiout,
int *colno,
int *width,
int *alignment,
char **colhdr)
{
/* There may be no headers at all or we may have used all columns */
if (uiout->headercurr == NULL)
return 0;
*colno = uiout->headercurr->colno;
*width = uiout->headercurr->width;
*alignment = uiout->headercurr->alignment;
*colhdr = uiout->headercurr->colhdr;
uiout->headercurr = uiout->headercurr->next;
return 1;
}
/* makes sure the field_* calls were properly placed */
static void
verify_field_proper_position (struct ui_out *uiout)
{
if (uiout->table_flag)
{
if (!uiout->body_flag)
internal_error (__FILE__, __LINE__,
"table_body missing; table fields must be \
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specified after table_body and inside a list.");
if (uiout->level == 0)
internal_error (__FILE__, __LINE__,
"list_begin missing; table fields must be \
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specified after table_body and inside a list.");
}
}
/* determines what is the alignment policy */
static void
verify_field_alignment (struct ui_out *uiout,
int fldno,
int *width,
int *align)
{
int colno;
char *text;
if (uiout->table_flag
&& get_curr_header (uiout, &colno, width, align, &text))
{
if (fldno != colno)
internal_error (__FILE__, __LINE__,
"ui-out internal error in handling headers.");
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}
else
{
*width = 0;
*align = ui_noalign;
}
}
/* access to ui_out format private members */
void
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ui_out_get_field_separator (struct ui_out *uiout)
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{
}
/* Access to ui-out members data */
struct ui_out_data *
ui_out_data (struct ui_out *uiout)
{
return uiout->data;
}
/* initalize private members at startup */
struct ui_out *
ui_out_new (struct ui_out_impl *impl,
struct ui_out_data *data,
int flags)
{
struct ui_out *uiout = XMALLOC (struct ui_out);
uiout->data = data;
uiout->impl = impl;
uiout->flags = flags;
uiout->table_flag = 0;
uiout->body_flag = 0;
uiout->level = 0;
memset (uiout->levels, 0, sizeof (uiout->levels));
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uiout->headerfirst = NULL;
uiout->headerlast = NULL;
uiout->headercurr = NULL;
return uiout;
}
/* standard gdb initialization hook */
void
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_initialize_ui_out (void)
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{
/* nothing needs to be done */
}