gdb/mi/mi-out.c

   1 /* MI Command Set - output generating routines.
   2    Copyright (C) 2000, Free Software Foundation, Inc.
   3    Contributed by Cygnus Solutions.
   4
   5    This file is part of GDB.
   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,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "ui-out.h"
  24 #include "mi-out.h"
  25
  26 /* Convenience macro for allocting typesafe memory. */
  27
  28 #ifndef XMALLOC
  29 #define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
  30 #endif
  31
  32 struct ui_out_data
  33   {
  34     int supress_field_separator;
  35     int first_header;
  36     struct ui_file *buffer;
  37   };
  38
  39 /* These are the MI output functions */
  40
  41 static void mi_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid);
  42 static void mi_table_body (struct ui_out *uiout);
  43 static void mi_table_end (struct ui_out *uiout);
  44 static void mi_table_header (struct ui_out *uiout, int width,
  45                              enum ui_align alig, char *colhdr);
  46 static void mi_list_begin (struct ui_out *uiout, int list_flag, char *lstid);
  47 static void mi_list_end (struct ui_out *uiout, int list_flag);
  48 static void mi_field_int (struct ui_out *uiout, int fldno, int width,
  49                           enum ui_align alig, char *fldname, int value);
  50 static void mi_field_skip (struct ui_out *uiout, int fldno, int width,
  51                            enum ui_align alig, char *fldname);
  52 static void mi_field_string (struct ui_out *uiout, int fldno, int width,
  53                              enum ui_align alig, char *fldname,
  54                              const char *string);
  55 static void mi_field_fmt (struct ui_out *uiout, int fldno,
  56                           int width, enum ui_align align,
  57                           char *fldname, char *format, va_list args);
  58 static void mi_spaces (struct ui_out *uiout, int numspaces);
  59 static void mi_text (struct ui_out *uiout, char *string);
  60 static void mi_message (struct ui_out *uiout, int verbosity, char *format,
  61                         va_list args);
  62 static void mi_wrap_hint (struct ui_out *uiout, char *identstring);
  63 static void mi_flush (struct ui_out *uiout);
  64
  65 /* This is the MI ui-out implementation functions vector */
  66
  67 /* FIXME: This can be initialized dynamically after default is set to
  68    handle initial output in main.c */
  69
  70 struct ui_out_impl mi_ui_out_impl =
  71 {
  72   mi_table_begin,
  73   mi_table_body,
  74   mi_table_end,
  75   mi_table_header,
  76   mi_list_begin,
  77   mi_list_end,
  78   mi_field_int,
  79   mi_field_skip,
  80   mi_field_string,
  81   mi_field_fmt,
  82   mi_spaces,
  83   mi_text,
  84   mi_message,
  85   mi_wrap_hint,
  86   mi_flush
  87 };
  88
  89 /* Prototypes for local functions */
  90
  91 extern void _initialize_mi_out PARAMS ((void));
  92 static void field_separator (struct ui_out *uiout);
  93 static void list_open (struct ui_out *uiout);
  94 static void list_close (struct ui_out *uiout);
  95
  96 static void out_field_fmt (struct ui_out *uiout, int fldno, char *fldname,
  97                            char *format,...);
  98
  99 /* Mark beginning of a table */
 100
 101 void
 102 mi_table_begin (uiout, nbrofcols, tblid)
 103      struct ui_out *uiout;
 104      int nbrofcols;
 105      char *tblid;
 106 {
 107   struct ui_out_data *data = ui_out_data (uiout);
 108   field_separator (uiout);
 109   if (tblid)
 110     fprintf_unfiltered (data->buffer, "%s=", tblid);
 111   list_open (uiout);
 112   data->first_header = 0;
 113   data->supress_field_separator = 1;
 114 }
 115
 116 /* Mark beginning of a table body */
 117
 118 void
 119 mi_table_body (uiout)
 120      struct ui_out *uiout;
 121 {
 122   struct ui_out_data *data = ui_out_data (uiout);
 123   /* close the table header line if there were any headers */
 124   if (data->first_header)
 125     list_close (uiout);
 126 }
 127
 128 /* Mark end of a table */
 129
 130 void
 131 mi_table_end (uiout)
 132      struct ui_out *uiout;
 133 {
 134   struct ui_out_data *data = ui_out_data (uiout);
 135   list_close (uiout);
 136   /* If table was empty this flag did not get reset yet */
 137   data->supress_field_separator = 0;
 138 }
 139
 140 /* Specify table header */
 141
 142 void
 143 mi_table_header (uiout, width, alignment, colhdr)
 144      struct ui_out *uiout;
 145      int width;
 146      int alignment;
 147      char *colhdr;
 148 {
 149   struct ui_out_data *data = ui_out_data (uiout);
 150   if (!data->first_header++)
 151     {
 152       fputs_unfiltered ("hdr=", data->buffer);
 153       list_open (uiout);
 154     }
 155   mi_field_string (uiout, 0, width, alignment, 0, colhdr);
 156 }
 157
 158 /* Mark beginning of a list */
 159
 160 void
 161 mi_list_begin (uiout, list_flag, lstid)
 162      struct ui_out *uiout;
 163      int list_flag;
 164      char *lstid;
 165 {
 166   struct ui_out_data *data = ui_out_data (uiout);
 167   field_separator (uiout);
 168   data->supress_field_separator = 1;
 169   if (lstid)
 170     fprintf_unfiltered (data->buffer, "%s=", lstid);
 171   list_open (uiout);
 172 }
 173
 174 /* Mark end of a list */
 175
 176 void
 177 mi_list_end (uiout, list_flag)
 178      struct ui_out *uiout;
 179      int list_flag;
 180 {
 181   struct ui_out_data *data = ui_out_data (uiout);
 182   list_close (uiout);
 183   /* If list was empty this flag did not get reset yet */
 184   data->supress_field_separator = 0;
 185 }
 186
 187 /* output an int field */
 188
 189 void
 190 mi_field_int (uiout, fldno, width, alignment, fldname, value)
 191      struct ui_out *uiout;
 192      int fldno;
 193      int width;
 194      int alignment;
 195      char *fldname;
 196      int value;
 197 {
 198   char buffer[20];              /* FIXME: how many chars long a %d can become? */
 199
 200   sprintf (buffer, "%d", value);
 201   mi_field_string (uiout, fldno, width, alignment, fldname, buffer);
 202 }
 203
 204 /* used to ommit a field */
 205
 206 void
 207 mi_field_skip (uiout, fldno, width, alignment, fldname)
 208      struct ui_out *uiout;
 209      int fldno;
 210      int width;
 211      int alignment;
 212      char *fldname;
 213 {
 214   mi_field_string (uiout, fldno, width, alignment, fldname, "");
 215 }
 216
 217 /* other specific mi_field_* end up here so alignment and field
 218    separators are both handled by mi_field_string */
 219
 220 void
 221 mi_field_string (struct ui_out *uiout,
 222                  int fldno,
 223                  int width,
 224                  int align,
 225                  char *fldname,
 226                  const char *string)
 227 {
 228   struct ui_out_data *data = ui_out_data (uiout);
 229   field_separator (uiout);
 230   if (fldname)
 231     fprintf_unfiltered (data->buffer, "%s=", fldname);
 232   fprintf_unfiltered (data->buffer, "\"");
 233   if (string)
 234     fputstr_unfiltered (string, '"', data->buffer);
 235   fprintf_unfiltered (data->buffer, "\"");
 236 }
 237
 238 /* This is the only field function that does not align */
 239
 240 void
 241 mi_field_fmt (struct ui_out *uiout, int fldno,
 242               int width, enum ui_align align,
 243               char *fldname, char *format, va_list args)
 244 {
 245   struct ui_out_data *data = ui_out_data (uiout);
 246   field_separator (uiout);
 247   if (fldname)
 248     fprintf_unfiltered (data->buffer, "%s=\"", fldname);
 249   else
 250     fputs_unfiltered ("\"", data->buffer);
 251   vfprintf_unfiltered (data->buffer, format, args);
 252   fputs_unfiltered ("\"", data->buffer);
 253 }
 254
 255 void
 256 mi_spaces (uiout, numspaces)
 257      struct ui_out *uiout;
 258      int numspaces;
 259 {
 260 }
 261
 262 void
 263 mi_text (uiout, string)
 264      struct ui_out *uiout;
 265      char *string;
 266 {
 267 }
 268
 269 void
 270 mi_message (struct ui_out *uiout, int verbosity, char *format, va_list args)
 271 {
 272 }
 273
 274 void
 275 mi_wrap_hint (uiout, identstring)
 276      struct ui_out *uiout;
 277      char *identstring;
 278 {
 279   wrap_here (identstring);
 280 }
 281
 282 void
 283 mi_flush (uiout)
 284      struct ui_out *uiout;
 285 {
 286   struct ui_out_data *data = ui_out_data (uiout);
 287   gdb_flush (data->buffer);
 288 }
 289
 290 /* local functions */
 291
 292 /* Like mi_field_fmt, but takes a variable number of args
 293    and makes a va_list and does not insert a separator */
 294
 295 /* VARARGS */
 296 static void
 297 out_field_fmt (struct ui_out *uiout, int fldno, char *fldname,
 298                char *format,...)
 299 {
 300   struct ui_out_data *data = ui_out_data (uiout);
 301   va_list args;
 302
 303   field_separator (uiout);
 304   if (fldname)
 305     fprintf_unfiltered (data->buffer, "%s=\"", fldname);
 306   else
 307     fputs_unfiltered ("\"", data->buffer);
 308
 309   va_start (args, format);
 310   vfprintf_unfiltered (data->buffer, format, args);
 311
 312   fputs_unfiltered ("\"", data->buffer);
 313
 314   va_end (args);
 315 }
 316
 317 /* access to ui_out format private members */
 318
 319 static void
 320 field_separator (struct ui_out *uiout)
 321 {
 322   struct ui_out_data *data = ui_out_data (uiout);
 323   if (data->supress_field_separator)
 324     data->supress_field_separator = 0;
 325   else
 326     fputc_unfiltered (',', data->buffer);
 327 }
 328
 329 static void
 330 list_open (struct ui_out *uiout)
 331 {
 332   struct ui_out_data *data = ui_out_data (uiout);
 333   fputc_unfiltered ('{', data->buffer);
 334 }
 335
 336 static void
 337 list_close (struct ui_out *uiout)
 338 {
 339   struct ui_out_data *data = ui_out_data (uiout);
 340   fputc_unfiltered ('}', data->buffer);
 341 }
 342
 343 /* add a string to the buffer */
 344
 345 void
 346 mi_out_buffered (struct ui_out *uiout, char *string)
 347 {
 348   struct ui_out_data *data = ui_out_data (uiout);
 349   fprintf_unfiltered (data->buffer, "%s", string);
 350 }
 351
 352 /* clear the buffer */
 353
 354 void
 355 mi_out_rewind (struct ui_out *uiout)
 356 {
 357   struct ui_out_data *data = ui_out_data (uiout);
 358   ui_file_rewind (data->buffer);
 359 }
 360
 361 /* dump the buffer onto the specified stream */
 362
 363 static void
 364 do_write (void *data, const char *buffer, long length_buffer)
 365 {
 366   ui_file_write (data, buffer, length_buffer);
 367 }
 368
 369 void
 370 mi_out_put (struct ui_out *uiout,
 371             struct ui_file *stream)
 372 {
 373   struct ui_out_data *data = ui_out_data (uiout);
 374   ui_file_put (data->buffer, do_write, stream);
 375   ui_file_rewind (data->buffer);
 376 }
 377
 378 /* initalize private members at startup */
 379
 380 struct ui_out *
 381 mi_out_new (void)
 382 {
 383   int flags = 0;
 384   struct ui_out_data *data = XMALLOC (struct ui_out_data);
 385   data->supress_field_separator = 0;
 386   /* FIXME: This code should be using a ``string_file'' and not the
 387      TUI buffer hack. */
 388   data->buffer = mem_fileopen ();
 389   return ui_out_new (&mi_ui_out_impl, data, flags);
 390 }
 391
 392 /* standard gdb initialization hook */
 393 void
 394 _initialize_mi_out ()
 395 {
 396   /* nothing happens here */
 397 }
 398
 399 /* Local variables: */
 400 /* change-log-default-name: "ChangeLog-mi" */
 401 /* End: */