| 1 | /* Output generating routines for GDB CLI. |
| 2 | |
| 3 | Copyright (C) 1999-2018 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Cygnus Solutions. |
| 6 | Written by Fernando Nasser for Cygnus. |
| 7 | |
| 8 | This file is part of GDB. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "ui-out.h" |
| 25 | #include "cli-out.h" |
| 26 | #include "completer.h" |
| 27 | #include "readline/readline.h" |
| 28 | |
| 29 | /* These are the CLI output functions */ |
| 30 | |
| 31 | /* Mark beginning of a table */ |
| 32 | |
| 33 | void |
| 34 | cli_ui_out::do_table_begin (int nbrofcols, int nr_rows, const char *tblid) |
| 35 | { |
| 36 | if (nr_rows == 0) |
| 37 | m_suppress_output = true; |
| 38 | else |
| 39 | /* Only the table suppresses the output and, fortunately, a table |
| 40 | is not a recursive data structure. */ |
| 41 | gdb_assert (!m_suppress_output); |
| 42 | } |
| 43 | |
| 44 | /* Mark beginning of a table body */ |
| 45 | |
| 46 | void |
| 47 | cli_ui_out::do_table_body () |
| 48 | { |
| 49 | if (m_suppress_output) |
| 50 | return; |
| 51 | |
| 52 | /* first, close the table header line */ |
| 53 | text ("\n"); |
| 54 | } |
| 55 | |
| 56 | /* Mark end of a table */ |
| 57 | |
| 58 | void |
| 59 | cli_ui_out::do_table_end () |
| 60 | { |
| 61 | m_suppress_output = false; |
| 62 | } |
| 63 | |
| 64 | /* Specify table header */ |
| 65 | |
| 66 | void |
| 67 | cli_ui_out::do_table_header (int width, ui_align alignment, |
| 68 | const std::string &col_name, |
| 69 | const std::string &col_hdr) |
| 70 | { |
| 71 | if (m_suppress_output) |
| 72 | return; |
| 73 | |
| 74 | do_field_string (0, width, alignment, 0, col_hdr.c_str ()); |
| 75 | } |
| 76 | |
| 77 | /* Mark beginning of a list */ |
| 78 | |
| 79 | void |
| 80 | cli_ui_out::do_begin (ui_out_type type, const char *id) |
| 81 | { |
| 82 | } |
| 83 | |
| 84 | /* Mark end of a list */ |
| 85 | |
| 86 | void |
| 87 | cli_ui_out::do_end (ui_out_type type) |
| 88 | { |
| 89 | } |
| 90 | |
| 91 | /* output an int field */ |
| 92 | |
| 93 | void |
| 94 | cli_ui_out::do_field_int (int fldno, int width, ui_align alignment, |
| 95 | const char *fldname, int value) |
| 96 | { |
| 97 | char buffer[20]; /* FIXME: how many chars long a %d can become? */ |
| 98 | |
| 99 | if (m_suppress_output) |
| 100 | return; |
| 101 | |
| 102 | xsnprintf (buffer, sizeof (buffer), "%d", value); |
| 103 | |
| 104 | do_field_string (fldno, width, alignment, fldname, buffer); |
| 105 | } |
| 106 | |
| 107 | /* used to omit a field */ |
| 108 | |
| 109 | void |
| 110 | cli_ui_out::do_field_skip (int fldno, int width, ui_align alignment, |
| 111 | const char *fldname) |
| 112 | { |
| 113 | if (m_suppress_output) |
| 114 | return; |
| 115 | |
| 116 | do_field_string (fldno, width, alignment, fldname, ""); |
| 117 | } |
| 118 | |
| 119 | /* other specific cli_field_* end up here so alignment and field |
| 120 | separators are both handled by cli_field_string */ |
| 121 | |
| 122 | void |
| 123 | cli_ui_out::do_field_string (int fldno, int width, ui_align align, |
| 124 | const char *fldname, const char *string) |
| 125 | { |
| 126 | int before = 0; |
| 127 | int after = 0; |
| 128 | |
| 129 | if (m_suppress_output) |
| 130 | return; |
| 131 | |
| 132 | if ((align != ui_noalign) && string) |
| 133 | { |
| 134 | before = width - strlen (string); |
| 135 | if (before <= 0) |
| 136 | before = 0; |
| 137 | else |
| 138 | { |
| 139 | if (align == ui_right) |
| 140 | after = 0; |
| 141 | else if (align == ui_left) |
| 142 | { |
| 143 | after = before; |
| 144 | before = 0; |
| 145 | } |
| 146 | else |
| 147 | /* ui_center */ |
| 148 | { |
| 149 | after = before / 2; |
| 150 | before -= after; |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | if (before) |
| 156 | spaces (before); |
| 157 | |
| 158 | if (string) |
| 159 | out_field_fmt (fldno, fldname, "%s", string); |
| 160 | |
| 161 | if (after) |
| 162 | spaces (after); |
| 163 | |
| 164 | if (align != ui_noalign) |
| 165 | field_separator (); |
| 166 | } |
| 167 | |
| 168 | /* This is the only field function that does not align. */ |
| 169 | |
| 170 | void |
| 171 | cli_ui_out::do_field_fmt (int fldno, int width, ui_align align, |
| 172 | const char *fldname, const char *format, |
| 173 | va_list args) |
| 174 | { |
| 175 | if (m_suppress_output) |
| 176 | return; |
| 177 | |
| 178 | vfprintf_filtered (m_streams.back (), format, args); |
| 179 | |
| 180 | if (align != ui_noalign) |
| 181 | field_separator (); |
| 182 | } |
| 183 | |
| 184 | void |
| 185 | cli_ui_out::do_spaces (int numspaces) |
| 186 | { |
| 187 | if (m_suppress_output) |
| 188 | return; |
| 189 | |
| 190 | print_spaces_filtered (numspaces, m_streams.back ()); |
| 191 | } |
| 192 | |
| 193 | void |
| 194 | cli_ui_out::do_text (const char *string) |
| 195 | { |
| 196 | if (m_suppress_output) |
| 197 | return; |
| 198 | |
| 199 | fputs_filtered (string, m_streams.back ()); |
| 200 | } |
| 201 | |
| 202 | void |
| 203 | cli_ui_out::do_message (const char *format, va_list args) |
| 204 | { |
| 205 | if (m_suppress_output) |
| 206 | return; |
| 207 | |
| 208 | vfprintf_unfiltered (m_streams.back (), format, args); |
| 209 | } |
| 210 | |
| 211 | void |
| 212 | cli_ui_out::do_wrap_hint (const char *identstring) |
| 213 | { |
| 214 | if (m_suppress_output) |
| 215 | return; |
| 216 | |
| 217 | wrap_here (identstring); |
| 218 | } |
| 219 | |
| 220 | void |
| 221 | cli_ui_out::do_flush () |
| 222 | { |
| 223 | gdb_flush (m_streams.back ()); |
| 224 | } |
| 225 | |
| 226 | /* OUTSTREAM as non-NULL will push OUTSTREAM on the stack of output streams |
| 227 | and make it therefore active. OUTSTREAM as NULL will pop the last pushed |
| 228 | output stream; it is an internal error if it does not exist. */ |
| 229 | |
| 230 | void |
| 231 | cli_ui_out::do_redirect (ui_file *outstream) |
| 232 | { |
| 233 | if (outstream != NULL) |
| 234 | m_streams.push_back (outstream); |
| 235 | else |
| 236 | m_streams.pop_back (); |
| 237 | } |
| 238 | |
| 239 | /* local functions */ |
| 240 | |
| 241 | /* Like cli_ui_out::do_field_fmt, but takes a variable number of args |
| 242 | and makes a va_list and does not insert a separator. */ |
| 243 | |
| 244 | /* VARARGS */ |
| 245 | void |
| 246 | cli_ui_out::out_field_fmt (int fldno, const char *fldname, |
| 247 | const char *format, ...) |
| 248 | { |
| 249 | va_list args; |
| 250 | |
| 251 | va_start (args, format); |
| 252 | vfprintf_filtered (m_streams.back (), format, args); |
| 253 | |
| 254 | va_end (args); |
| 255 | } |
| 256 | |
| 257 | void |
| 258 | cli_ui_out::field_separator () |
| 259 | { |
| 260 | fputc_filtered (' ', m_streams.back ()); |
| 261 | } |
| 262 | |
| 263 | /* Constructor for cli_ui_out. */ |
| 264 | |
| 265 | cli_ui_out::cli_ui_out (ui_file *stream, ui_out_flags flags) |
| 266 | : ui_out (flags), |
| 267 | m_suppress_output (false) |
| 268 | { |
| 269 | gdb_assert (stream != NULL); |
| 270 | |
| 271 | m_streams.push_back (stream); |
| 272 | } |
| 273 | |
| 274 | cli_ui_out::~cli_ui_out () |
| 275 | { |
| 276 | } |
| 277 | |
| 278 | /* Initialize private members at startup. */ |
| 279 | |
| 280 | cli_ui_out * |
| 281 | cli_out_new (struct ui_file *stream) |
| 282 | { |
| 283 | return new cli_ui_out (stream, ui_source_list); |
| 284 | } |
| 285 | |
| 286 | ui_file * |
| 287 | cli_ui_out::set_stream (struct ui_file *stream) |
| 288 | { |
| 289 | ui_file *old; |
| 290 | |
| 291 | old = m_streams.back (); |
| 292 | m_streams.back () = stream; |
| 293 | |
| 294 | return old; |
| 295 | } |
| 296 | |
| 297 | /* CLI interface to display tab-completion matches. */ |
| 298 | |
| 299 | /* CLI version of displayer.crlf. */ |
| 300 | |
| 301 | static void |
| 302 | cli_mld_crlf (const struct match_list_displayer *displayer) |
| 303 | { |
| 304 | rl_crlf (); |
| 305 | } |
| 306 | |
| 307 | /* CLI version of displayer.putch. */ |
| 308 | |
| 309 | static void |
| 310 | cli_mld_putch (const struct match_list_displayer *displayer, int ch) |
| 311 | { |
| 312 | putc (ch, rl_outstream); |
| 313 | } |
| 314 | |
| 315 | /* CLI version of displayer.puts. */ |
| 316 | |
| 317 | static void |
| 318 | cli_mld_puts (const struct match_list_displayer *displayer, const char *s) |
| 319 | { |
| 320 | fputs (s, rl_outstream); |
| 321 | } |
| 322 | |
| 323 | /* CLI version of displayer.flush. */ |
| 324 | |
| 325 | static void |
| 326 | cli_mld_flush (const struct match_list_displayer *displayer) |
| 327 | { |
| 328 | fflush (rl_outstream); |
| 329 | } |
| 330 | |
| 331 | EXTERN_C void _rl_erase_entire_line (void); |
| 332 | |
| 333 | /* CLI version of displayer.erase_entire_line. */ |
| 334 | |
| 335 | static void |
| 336 | cli_mld_erase_entire_line (const struct match_list_displayer *displayer) |
| 337 | { |
| 338 | _rl_erase_entire_line (); |
| 339 | } |
| 340 | |
| 341 | /* CLI version of displayer.beep. */ |
| 342 | |
| 343 | static void |
| 344 | cli_mld_beep (const struct match_list_displayer *displayer) |
| 345 | { |
| 346 | rl_ding (); |
| 347 | } |
| 348 | |
| 349 | /* CLI version of displayer.read_key. */ |
| 350 | |
| 351 | static int |
| 352 | cli_mld_read_key (const struct match_list_displayer *displayer) |
| 353 | { |
| 354 | return rl_read_key (); |
| 355 | } |
| 356 | |
| 357 | /* CLI version of rl_completion_display_matches_hook. |
| 358 | See gdb_display_match_list for a description of the arguments. */ |
| 359 | |
| 360 | void |
| 361 | cli_display_match_list (char **matches, int len, int max) |
| 362 | { |
| 363 | struct match_list_displayer displayer; |
| 364 | |
| 365 | rl_get_screen_size (&displayer.height, &displayer.width); |
| 366 | displayer.crlf = cli_mld_crlf; |
| 367 | displayer.putch = cli_mld_putch; |
| 368 | displayer.puts = cli_mld_puts; |
| 369 | displayer.flush = cli_mld_flush; |
| 370 | displayer.erase_entire_line = cli_mld_erase_entire_line; |
| 371 | displayer.beep = cli_mld_beep; |
| 372 | displayer.read_key = cli_mld_read_key; |
| 373 | |
| 374 | gdb_display_match_list (matches, len, max, &displayer); |
| 375 | rl_forced_update_display (); |
| 376 | } |