| 1 | /* complete.c -- filename completion for readline. */ |
| 2 | |
| 3 | /* Copyright (C) 1987-2005 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of the GNU Readline Library, a library for |
| 6 | reading lines of text with interactive input and history editing. |
| 7 | |
| 8 | The GNU Readline Library is free software; you can redistribute it |
| 9 | and/or modify it under the terms of the GNU General Public License |
| 10 | as published by the Free Software Foundation; either version 2, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | The GNU Readline Library is distributed in the hope that it will be |
| 14 | useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
| 15 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | The GNU General Public License is often shipped with GNU software, and |
| 19 | is generally kept in a file called COPYING or LICENSE. If you do not |
| 20 | have a copy of the license, write to the Free Software Foundation, |
| 21 | 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| 22 | #define READLINE_LIBRARY |
| 23 | |
| 24 | #if defined (HAVE_CONFIG_H) |
| 25 | # include <config.h> |
| 26 | #endif |
| 27 | |
| 28 | #include <sys/types.h> |
| 29 | #include <fcntl.h> |
| 30 | #if defined (HAVE_SYS_FILE_H) |
| 31 | # include <sys/file.h> |
| 32 | #endif |
| 33 | |
| 34 | #if defined (HAVE_UNISTD_H) |
| 35 | # include <unistd.h> |
| 36 | #endif /* HAVE_UNISTD_H */ |
| 37 | |
| 38 | #if defined (HAVE_STDLIB_H) |
| 39 | # include <stdlib.h> |
| 40 | #else |
| 41 | # include "ansi_stdlib.h" |
| 42 | #endif /* HAVE_STDLIB_H */ |
| 43 | |
| 44 | #include <stdio.h> |
| 45 | |
| 46 | #include <errno.h> |
| 47 | #if !defined (errno) |
| 48 | extern int errno; |
| 49 | #endif /* !errno */ |
| 50 | |
| 51 | #if defined (HAVE_PWD_H) |
| 52 | #include <pwd.h> |
| 53 | #endif |
| 54 | |
| 55 | #include "posixdir.h" |
| 56 | #include "posixstat.h" |
| 57 | |
| 58 | /* System-specific feature definitions and include files. */ |
| 59 | #include "rldefs.h" |
| 60 | #include "rlmbutil.h" |
| 61 | |
| 62 | /* Some standard library routines. */ |
| 63 | #include "readline.h" |
| 64 | #include "xmalloc.h" |
| 65 | #include "rlprivate.h" |
| 66 | |
| 67 | #ifdef __STDC__ |
| 68 | typedef int QSFUNC (const void *, const void *); |
| 69 | #else |
| 70 | typedef int QSFUNC (); |
| 71 | #endif |
| 72 | |
| 73 | #ifdef HAVE_LSTAT |
| 74 | # define LSTAT lstat |
| 75 | #else |
| 76 | # define LSTAT stat |
| 77 | #endif |
| 78 | |
| 79 | /* Unix version of a hidden file. Could be different on other systems. */ |
| 80 | #define HIDDEN_FILE(fname) ((fname)[0] == '.') |
| 81 | |
| 82 | /* Most systems don't declare getpwent in <pwd.h> if _POSIX_SOURCE is |
| 83 | defined. */ |
| 84 | #if defined (HAVE_GETPWENT) && (!defined (HAVE_GETPW_DECLS) || defined (_POSIX_SOURCE)) |
| 85 | extern struct passwd *getpwent PARAMS((void)); |
| 86 | #endif /* HAVE_GETPWENT && (!HAVE_GETPW_DECLS || _POSIX_SOURCE) */ |
| 87 | |
| 88 | /* If non-zero, then this is the address of a function to call when |
| 89 | completing a word would normally display the list of possible matches. |
| 90 | This function is called instead of actually doing the display. |
| 91 | It takes three arguments: (char **matches, int num_matches, int max_length) |
| 92 | where MATCHES is the array of strings that matched, NUM_MATCHES is the |
| 93 | number of strings in that array, and MAX_LENGTH is the length of the |
| 94 | longest string in that array. */ |
| 95 | rl_compdisp_func_t *rl_completion_display_matches_hook = (rl_compdisp_func_t *)NULL; |
| 96 | |
| 97 | #if defined (VISIBLE_STATS) |
| 98 | # if !defined (X_OK) |
| 99 | # define X_OK 1 |
| 100 | # endif |
| 101 | static int stat_char PARAMS((char *)); |
| 102 | #endif |
| 103 | |
| 104 | static int path_isdir PARAMS((const char *)); |
| 105 | |
| 106 | static char *rl_quote_filename PARAMS((char *, int, char *)); |
| 107 | |
| 108 | static void set_completion_defaults PARAMS((int)); |
| 109 | static int get_y_or_n PARAMS((int)); |
| 110 | static int _rl_internal_pager PARAMS((int)); |
| 111 | static char *printable_part PARAMS((char *)); |
| 112 | static int fnwidth PARAMS((const char *)); |
| 113 | static int fnprint PARAMS((const char *)); |
| 114 | static int print_filename PARAMS((char *, char *)); |
| 115 | |
| 116 | static char **gen_completion_matches PARAMS((char *, int, int, rl_compentry_func_t *, int, int)); |
| 117 | |
| 118 | static char **remove_duplicate_matches PARAMS((char **)); |
| 119 | static void insert_match PARAMS((char *, int, int, char *)); |
| 120 | static int append_to_match PARAMS((char *, int, int, int)); |
| 121 | static void insert_all_matches PARAMS((char **, int, char *)); |
| 122 | static void display_matches PARAMS((char **)); |
| 123 | static int compute_lcd_of_matches PARAMS((char **, int, const char *)); |
| 124 | static int postprocess_matches PARAMS((char ***, int)); |
| 125 | |
| 126 | static char *make_quoted_replacement PARAMS((char *, int, char *)); |
| 127 | |
| 128 | /* **************************************************************** */ |
| 129 | /* */ |
| 130 | /* Completion matching, from readline's point of view. */ |
| 131 | /* */ |
| 132 | /* **************************************************************** */ |
| 133 | |
| 134 | /* Variables known only to the readline library. */ |
| 135 | |
| 136 | /* If non-zero, non-unique completions always show the list of matches. */ |
| 137 | int _rl_complete_show_all = 0; |
| 138 | |
| 139 | /* If non-zero, non-unique completions show the list of matches, unless it |
| 140 | is not possible to do partial completion and modify the line. */ |
| 141 | int _rl_complete_show_unmodified = 0; |
| 142 | |
| 143 | /* If non-zero, completed directory names have a slash appended. */ |
| 144 | int _rl_complete_mark_directories = 1; |
| 145 | |
| 146 | /* If non-zero, the symlinked directory completion behavior introduced in |
| 147 | readline-4.2a is disabled, and symlinks that point to directories have |
| 148 | a slash appended (subject to the value of _rl_complete_mark_directories). |
| 149 | This is user-settable via the mark-symlinked-directories variable. */ |
| 150 | int _rl_complete_mark_symlink_dirs = 0; |
| 151 | |
| 152 | /* If non-zero, completions are printed horizontally in alphabetical order, |
| 153 | like `ls -x'. */ |
| 154 | int _rl_print_completions_horizontally; |
| 155 | |
| 156 | /* Non-zero means that case is not significant in filename completion. */ |
| 157 | #if defined (__MSDOS__) && !defined (__DJGPP__) |
| 158 | int _rl_completion_case_fold = 1; |
| 159 | #else |
| 160 | int _rl_completion_case_fold; |
| 161 | #endif |
| 162 | |
| 163 | /* If non-zero, don't match hidden files (filenames beginning with a `.' on |
| 164 | Unix) when doing filename completion. */ |
| 165 | int _rl_match_hidden_files = 1; |
| 166 | |
| 167 | /* Global variables available to applications using readline. */ |
| 168 | |
| 169 | #if defined (VISIBLE_STATS) |
| 170 | /* Non-zero means add an additional character to each filename displayed |
| 171 | during listing completion iff rl_filename_completion_desired which helps |
| 172 | to indicate the type of file being listed. */ |
| 173 | int rl_visible_stats = 0; |
| 174 | #endif /* VISIBLE_STATS */ |
| 175 | |
| 176 | /* If non-zero, then this is the address of a function to call when |
| 177 | completing on a directory name. The function is called with |
| 178 | the address of a string (the current directory name) as an arg. */ |
| 179 | rl_icppfunc_t *rl_directory_completion_hook = (rl_icppfunc_t *)NULL; |
| 180 | |
| 181 | rl_icppfunc_t *rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL; |
| 182 | |
| 183 | /* Non-zero means readline completion functions perform tilde expansion. */ |
| 184 | int rl_complete_with_tilde_expansion = 0; |
| 185 | |
| 186 | /* Pointer to the generator function for completion_matches (). |
| 187 | NULL means to use rl_filename_completion_function (), the default filename |
| 188 | completer. */ |
| 189 | rl_compentry_func_t *rl_completion_entry_function = (rl_compentry_func_t *)NULL; |
| 190 | |
| 191 | /* Pointer to alternative function to create matches. |
| 192 | Function is called with TEXT, START, and END. |
| 193 | START and END are indices in RL_LINE_BUFFER saying what the boundaries |
| 194 | of TEXT are. |
| 195 | If this function exists and returns NULL then call the value of |
| 196 | rl_completion_entry_function to try to match, otherwise use the |
| 197 | array of strings returned. */ |
| 198 | rl_completion_func_t *rl_attempted_completion_function = (rl_completion_func_t *)NULL; |
| 199 | |
| 200 | /* Non-zero means to suppress normal filename completion after the |
| 201 | user-specified completion function has been called. */ |
| 202 | int rl_attempted_completion_over = 0; |
| 203 | |
| 204 | /* Set to a character indicating the type of completion being performed |
| 205 | by rl_complete_internal, available for use by application completion |
| 206 | functions. */ |
| 207 | int rl_completion_type = 0; |
| 208 | |
| 209 | /* Up to this many items will be displayed in response to a |
| 210 | possible-completions call. After that, we ask the user if |
| 211 | she is sure she wants to see them all. A negative value means |
| 212 | don't ask. */ |
| 213 | int rl_completion_query_items = 100; |
| 214 | |
| 215 | int _rl_page_completions = 1; |
| 216 | |
| 217 | /* The basic list of characters that signal a break between words for the |
| 218 | completer routine. The contents of this variable is what breaks words |
| 219 | in the shell, i.e. " \t\n\"\\'`@$><=" */ |
| 220 | const char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{("; /* }) */ |
| 221 | |
| 222 | /* List of basic quoting characters. */ |
| 223 | const char *rl_basic_quote_characters = "\"'"; |
| 224 | |
| 225 | /* The list of characters that signal a break between words for |
| 226 | rl_complete_internal. The default list is the contents of |
| 227 | rl_basic_word_break_characters. */ |
| 228 | /*const*/ char *rl_completer_word_break_characters = (/*const*/ char *)NULL; |
| 229 | |
| 230 | /* Hook function to allow an application to set the completion word |
| 231 | break characters before readline breaks up the line. Allows |
| 232 | position-dependent word break characters. */ |
| 233 | rl_cpvfunc_t *rl_completion_word_break_hook = (rl_cpvfunc_t *)NULL; |
| 234 | |
| 235 | /* List of characters which can be used to quote a substring of the line. |
| 236 | Completion occurs on the entire substring, and within the substring |
| 237 | rl_completer_word_break_characters are treated as any other character, |
| 238 | unless they also appear within this list. */ |
| 239 | const char *rl_completer_quote_characters = (const char *)NULL; |
| 240 | |
| 241 | /* List of characters that should be quoted in filenames by the completer. */ |
| 242 | const char *rl_filename_quote_characters = (const char *)NULL; |
| 243 | |
| 244 | /* List of characters that are word break characters, but should be left |
| 245 | in TEXT when it is passed to the completion function. The shell uses |
| 246 | this to help determine what kind of completing to do. */ |
| 247 | const char *rl_special_prefixes = (const char *)NULL; |
| 248 | |
| 249 | /* If non-zero, then disallow duplicates in the matches. */ |
| 250 | int rl_ignore_completion_duplicates = 1; |
| 251 | |
| 252 | /* Non-zero means that the results of the matches are to be treated |
| 253 | as filenames. This is ALWAYS zero on entry, and can only be changed |
| 254 | within a completion entry finder function. */ |
| 255 | int rl_filename_completion_desired = 0; |
| 256 | |
| 257 | /* Non-zero means that the results of the matches are to be quoted using |
| 258 | double quotes (or an application-specific quoting mechanism) if the |
| 259 | filename contains any characters in rl_filename_quote_chars. This is |
| 260 | ALWAYS non-zero on entry, and can only be changed within a completion |
| 261 | entry finder function. */ |
| 262 | int rl_filename_quoting_desired = 1; |
| 263 | |
| 264 | /* This function, if defined, is called by the completer when real |
| 265 | filename completion is done, after all the matching names have been |
| 266 | generated. It is passed a (char**) known as matches in the code below. |
| 267 | It consists of a NULL-terminated array of pointers to potential |
| 268 | matching strings. The 1st element (matches[0]) is the maximal |
| 269 | substring that is common to all matches. This function can re-arrange |
| 270 | the list of matches as required, but all elements of the array must be |
| 271 | free()'d if they are deleted. The main intent of this function is |
| 272 | to implement FIGNORE a la SunOS csh. */ |
| 273 | rl_compignore_func_t *rl_ignore_some_completions_function = (rl_compignore_func_t *)NULL; |
| 274 | |
| 275 | /* Set to a function to quote a filename in an application-specific fashion. |
| 276 | Called with the text to quote, the type of match found (single or multiple) |
| 277 | and a pointer to the quoting character to be used, which the function can |
| 278 | reset if desired. */ |
| 279 | rl_quote_func_t *rl_filename_quoting_function = rl_quote_filename; |
| 280 | |
| 281 | /* Function to call to remove quoting characters from a filename. Called |
| 282 | before completion is attempted, so the embedded quotes do not interfere |
| 283 | with matching names in the file system. Readline doesn't do anything |
| 284 | with this; it's set only by applications. */ |
| 285 | rl_dequote_func_t *rl_filename_dequoting_function = (rl_dequote_func_t *)NULL; |
| 286 | |
| 287 | /* Function to call to decide whether or not a word break character is |
| 288 | quoted. If a character is quoted, it does not break words for the |
| 289 | completer. */ |
| 290 | rl_linebuf_func_t *rl_char_is_quoted_p = (rl_linebuf_func_t *)NULL; |
| 291 | |
| 292 | /* If non-zero, the completion functions don't append anything except a |
| 293 | possible closing quote. This is set to 0 by rl_complete_internal and |
| 294 | may be changed by an application-specific completion function. */ |
| 295 | int rl_completion_suppress_append = 0; |
| 296 | |
| 297 | /* Character appended to completed words when at the end of the line. The |
| 298 | default is a space. */ |
| 299 | int rl_completion_append_character = ' '; |
| 300 | |
| 301 | /* If non-zero, the completion functions don't append any closing quote. |
| 302 | This is set to 0 by rl_complete_internal and may be changed by an |
| 303 | application-specific completion function. */ |
| 304 | int rl_completion_suppress_quote = 0; |
| 305 | |
| 306 | /* Set to any quote character readline thinks it finds before any application |
| 307 | completion function is called. */ |
| 308 | int rl_completion_quote_character; |
| 309 | |
| 310 | /* Set to a non-zero value if readline found quoting anywhere in the word to |
| 311 | be completed; set before any application completion function is called. */ |
| 312 | int rl_completion_found_quote; |
| 313 | |
| 314 | /* If non-zero, a slash will be appended to completed filenames that are |
| 315 | symbolic links to directory names, subject to the value of the |
| 316 | mark-directories variable (which is user-settable). This exists so |
| 317 | that application completion functions can override the user's preference |
| 318 | (set via the mark-symlinked-directories variable) if appropriate. |
| 319 | It's set to the value of _rl_complete_mark_symlink_dirs in |
| 320 | rl_complete_internal before any application-specific completion |
| 321 | function is called, so without that function doing anything, the user's |
| 322 | preferences are honored. */ |
| 323 | int rl_completion_mark_symlink_dirs; |
| 324 | |
| 325 | /* If non-zero, inhibit completion (temporarily). */ |
| 326 | int rl_inhibit_completion; |
| 327 | |
| 328 | /* Variables local to this file. */ |
| 329 | |
| 330 | /* Local variable states what happened during the last completion attempt. */ |
| 331 | static int completion_changed_buffer; |
| 332 | |
| 333 | /*************************************/ |
| 334 | /* */ |
| 335 | /* Bindable completion functions */ |
| 336 | /* */ |
| 337 | /*************************************/ |
| 338 | |
| 339 | /* Complete the word at or before point. You have supplied the function |
| 340 | that does the initial simple matching selection algorithm (see |
| 341 | rl_completion_matches ()). The default is to do filename completion. */ |
| 342 | int |
| 343 | rl_complete (ignore, invoking_key) |
| 344 | int ignore, invoking_key; |
| 345 | { |
| 346 | if (rl_inhibit_completion) |
| 347 | return (_rl_insert_char (ignore, invoking_key)); |
| 348 | else if (rl_last_func == rl_complete && !completion_changed_buffer) |
| 349 | return (rl_complete_internal ('?')); |
| 350 | else if (_rl_complete_show_all) |
| 351 | return (rl_complete_internal ('!')); |
| 352 | else if (_rl_complete_show_unmodified) |
| 353 | return (rl_complete_internal ('@')); |
| 354 | else |
| 355 | return (rl_complete_internal (TAB)); |
| 356 | } |
| 357 | |
| 358 | /* List the possible completions. See description of rl_complete (). */ |
| 359 | int |
| 360 | rl_possible_completions (ignore, invoking_key) |
| 361 | int ignore, invoking_key; |
| 362 | { |
| 363 | return (rl_complete_internal ('?')); |
| 364 | } |
| 365 | |
| 366 | int |
| 367 | rl_insert_completions (ignore, invoking_key) |
| 368 | int ignore, invoking_key; |
| 369 | { |
| 370 | return (rl_complete_internal ('*')); |
| 371 | } |
| 372 | |
| 373 | /* Return the correct value to pass to rl_complete_internal performing |
| 374 | the same tests as rl_complete. This allows consecutive calls to an |
| 375 | application's completion function to list possible completions and for |
| 376 | an application-specific completion function to honor the |
| 377 | show-all-if-ambiguous readline variable. */ |
| 378 | int |
| 379 | rl_completion_mode (cfunc) |
| 380 | rl_command_func_t *cfunc; |
| 381 | { |
| 382 | if (rl_last_func == cfunc && !completion_changed_buffer) |
| 383 | return '?'; |
| 384 | else if (_rl_complete_show_all) |
| 385 | return '!'; |
| 386 | else if (_rl_complete_show_unmodified) |
| 387 | return '@'; |
| 388 | else |
| 389 | return TAB; |
| 390 | } |
| 391 | |
| 392 | /************************************/ |
| 393 | /* */ |
| 394 | /* Completion utility functions */ |
| 395 | /* */ |
| 396 | /************************************/ |
| 397 | |
| 398 | /* Set default values for readline word completion. These are the variables |
| 399 | that application completion functions can change or inspect. */ |
| 400 | static void |
| 401 | set_completion_defaults (what_to_do) |
| 402 | int what_to_do; |
| 403 | { |
| 404 | /* Only the completion entry function can change these. */ |
| 405 | rl_filename_completion_desired = 0; |
| 406 | rl_filename_quoting_desired = 1; |
| 407 | rl_completion_type = what_to_do; |
| 408 | rl_completion_suppress_append = rl_completion_suppress_quote = 0; |
| 409 | |
| 410 | /* The completion entry function may optionally change this. */ |
| 411 | rl_completion_mark_symlink_dirs = _rl_complete_mark_symlink_dirs; |
| 412 | } |
| 413 | |
| 414 | /* The user must press "y" or "n". Non-zero return means "y" pressed. */ |
| 415 | static int |
| 416 | get_y_or_n (for_pager) |
| 417 | int for_pager; |
| 418 | { |
| 419 | int c; |
| 420 | |
| 421 | for (;;) |
| 422 | { |
| 423 | RL_SETSTATE(RL_STATE_MOREINPUT); |
| 424 | c = rl_read_key (); |
| 425 | RL_UNSETSTATE(RL_STATE_MOREINPUT); |
| 426 | |
| 427 | if (c == 'y' || c == 'Y' || c == ' ') |
| 428 | return (1); |
| 429 | if (c == 'n' || c == 'N' || c == RUBOUT) |
| 430 | return (0); |
| 431 | if (c == ABORT_CHAR) |
| 432 | _rl_abort_internal (); |
| 433 | if (for_pager && (c == NEWLINE || c == RETURN)) |
| 434 | return (2); |
| 435 | if (for_pager && (c == 'q' || c == 'Q')) |
| 436 | return (0); |
| 437 | rl_ding (); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | static int |
| 442 | _rl_internal_pager (lines) |
| 443 | int lines; |
| 444 | { |
| 445 | int i; |
| 446 | |
| 447 | fprintf (rl_outstream, "--More--"); |
| 448 | fflush (rl_outstream); |
| 449 | i = get_y_or_n (1); |
| 450 | _rl_erase_entire_line (); |
| 451 | if (i == 0) |
| 452 | return -1; |
| 453 | else if (i == 2) |
| 454 | return (lines - 1); |
| 455 | else |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | static int |
| 460 | path_isdir (filename) |
| 461 | const char *filename; |
| 462 | { |
| 463 | struct stat finfo; |
| 464 | |
| 465 | return (stat (filename, &finfo) == 0 && S_ISDIR (finfo.st_mode)); |
| 466 | } |
| 467 | |
| 468 | #if defined (VISIBLE_STATS) |
| 469 | /* Return the character which best describes FILENAME. |
| 470 | `@' for symbolic links |
| 471 | `/' for directories |
| 472 | `*' for executables |
| 473 | `=' for sockets |
| 474 | `|' for FIFOs |
| 475 | `%' for character special devices |
| 476 | `#' for block special devices */ |
| 477 | static int |
| 478 | stat_char (filename) |
| 479 | char *filename; |
| 480 | { |
| 481 | struct stat finfo; |
| 482 | int character, r; |
| 483 | |
| 484 | #if defined (HAVE_LSTAT) && defined (S_ISLNK) |
| 485 | r = lstat (filename, &finfo); |
| 486 | #else |
| 487 | r = stat (filename, &finfo); |
| 488 | #endif |
| 489 | |
| 490 | if (r == -1) |
| 491 | return (0); |
| 492 | |
| 493 | character = 0; |
| 494 | if (S_ISDIR (finfo.st_mode)) |
| 495 | character = '/'; |
| 496 | #if defined (S_ISCHR) |
| 497 | else if (S_ISCHR (finfo.st_mode)) |
| 498 | character = '%'; |
| 499 | #endif /* S_ISCHR */ |
| 500 | #if defined (S_ISBLK) |
| 501 | else if (S_ISBLK (finfo.st_mode)) |
| 502 | character = '#'; |
| 503 | #endif /* S_ISBLK */ |
| 504 | #if defined (S_ISLNK) |
| 505 | else if (S_ISLNK (finfo.st_mode)) |
| 506 | character = '@'; |
| 507 | #endif /* S_ISLNK */ |
| 508 | #if defined (S_ISSOCK) |
| 509 | else if (S_ISSOCK (finfo.st_mode)) |
| 510 | character = '='; |
| 511 | #endif /* S_ISSOCK */ |
| 512 | #if defined (S_ISFIFO) |
| 513 | else if (S_ISFIFO (finfo.st_mode)) |
| 514 | character = '|'; |
| 515 | #endif |
| 516 | else if (S_ISREG (finfo.st_mode)) |
| 517 | { |
| 518 | if (access (filename, X_OK) == 0) |
| 519 | character = '*'; |
| 520 | } |
| 521 | return (character); |
| 522 | } |
| 523 | #endif /* VISIBLE_STATS */ |
| 524 | |
| 525 | /* Return the portion of PATHNAME that should be output when listing |
| 526 | possible completions. If we are hacking filename completion, we |
| 527 | are only interested in the basename, the portion following the |
| 528 | final slash. Otherwise, we return what we were passed. Since |
| 529 | printing empty strings is not very informative, if we're doing |
| 530 | filename completion, and the basename is the empty string, we look |
| 531 | for the previous slash and return the portion following that. If |
| 532 | there's no previous slash, we just return what we were passed. */ |
| 533 | static char * |
| 534 | printable_part (pathname) |
| 535 | char *pathname; |
| 536 | { |
| 537 | char *temp, *x; |
| 538 | |
| 539 | if (rl_filename_completion_desired == 0) /* don't need to do anything */ |
| 540 | return (pathname); |
| 541 | |
| 542 | temp = strrchr (pathname, '/'); |
| 543 | #if defined (__MSDOS__) |
| 544 | if (temp == 0 && ISALPHA ((unsigned char)pathname[0]) && pathname[1] == ':') |
| 545 | temp = pathname + 1; |
| 546 | #endif |
| 547 | |
| 548 | if (temp == 0 || *temp == '\0') |
| 549 | return (pathname); |
| 550 | /* If the basename is NULL, we might have a pathname like '/usr/src/'. |
| 551 | Look for a previous slash and, if one is found, return the portion |
| 552 | following that slash. If there's no previous slash, just return the |
| 553 | pathname we were passed. */ |
| 554 | else if (temp[1] == '\0') |
| 555 | { |
| 556 | for (x = temp - 1; x > pathname; x--) |
| 557 | if (*x == '/') |
| 558 | break; |
| 559 | return ((*x == '/') ? x + 1 : pathname); |
| 560 | } |
| 561 | else |
| 562 | return ++temp; |
| 563 | } |
| 564 | |
| 565 | /* Compute width of STRING when displayed on screen by print_filename */ |
| 566 | static int |
| 567 | fnwidth (string) |
| 568 | const char *string; |
| 569 | { |
| 570 | int width, pos; |
| 571 | #if defined (HANDLE_MULTIBYTE) |
| 572 | mbstate_t ps; |
| 573 | int left, w; |
| 574 | size_t clen; |
| 575 | wchar_t wc; |
| 576 | |
| 577 | left = strlen (string) + 1; |
| 578 | memset (&ps, 0, sizeof (mbstate_t)); |
| 579 | #endif |
| 580 | |
| 581 | width = pos = 0; |
| 582 | while (string[pos]) |
| 583 | { |
| 584 | if (CTRL_CHAR (*string) || *string == RUBOUT) |
| 585 | { |
| 586 | width += 2; |
| 587 | pos++; |
| 588 | } |
| 589 | else |
| 590 | { |
| 591 | #if defined (HANDLE_MULTIBYTE) |
| 592 | clen = mbrtowc (&wc, string + pos, left - pos, &ps); |
| 593 | if (MB_INVALIDCH (clen)) |
| 594 | { |
| 595 | width++; |
| 596 | pos++; |
| 597 | memset (&ps, 0, sizeof (mbstate_t)); |
| 598 | } |
| 599 | else if (MB_NULLWCH (clen)) |
| 600 | break; |
| 601 | else |
| 602 | { |
| 603 | pos += clen; |
| 604 | w = wcwidth (wc); |
| 605 | width += (w >= 0) ? w : 1; |
| 606 | } |
| 607 | #else |
| 608 | width++; |
| 609 | pos++; |
| 610 | #endif |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | return width; |
| 615 | } |
| 616 | |
| 617 | static int |
| 618 | fnprint (to_print) |
| 619 | const char *to_print; |
| 620 | { |
| 621 | int printed_len; |
| 622 | const char *s; |
| 623 | #if defined (HANDLE_MULTIBYTE) |
| 624 | mbstate_t ps; |
| 625 | const char *end; |
| 626 | size_t tlen; |
| 627 | int width, w; |
| 628 | wchar_t wc; |
| 629 | |
| 630 | end = to_print + strlen (to_print) + 1; |
| 631 | memset (&ps, 0, sizeof (mbstate_t)); |
| 632 | #endif |
| 633 | |
| 634 | printed_len = 0; |
| 635 | s = to_print; |
| 636 | while (*s) |
| 637 | { |
| 638 | if (CTRL_CHAR (*s)) |
| 639 | { |
| 640 | putc ('^', rl_outstream); |
| 641 | putc (UNCTRL (*s), rl_outstream); |
| 642 | printed_len += 2; |
| 643 | s++; |
| 644 | #if defined (HANDLE_MULTIBYTE) |
| 645 | memset (&ps, 0, sizeof (mbstate_t)); |
| 646 | #endif |
| 647 | } |
| 648 | else if (*s == RUBOUT) |
| 649 | { |
| 650 | putc ('^', rl_outstream); |
| 651 | putc ('?', rl_outstream); |
| 652 | printed_len += 2; |
| 653 | s++; |
| 654 | #if defined (HANDLE_MULTIBYTE) |
| 655 | memset (&ps, 0, sizeof (mbstate_t)); |
| 656 | #endif |
| 657 | } |
| 658 | else |
| 659 | { |
| 660 | #if defined (HANDLE_MULTIBYTE) |
| 661 | tlen = mbrtowc (&wc, s, end - s, &ps); |
| 662 | if (MB_INVALIDCH (tlen)) |
| 663 | { |
| 664 | tlen = 1; |
| 665 | width = 1; |
| 666 | memset (&ps, 0, sizeof (mbstate_t)); |
| 667 | } |
| 668 | else if (MB_NULLWCH (tlen)) |
| 669 | break; |
| 670 | else |
| 671 | { |
| 672 | w = wcwidth (wc); |
| 673 | width = (w >= 0) ? w : 1; |
| 674 | } |
| 675 | fwrite (s, 1, tlen, rl_outstream); |
| 676 | s += tlen; |
| 677 | printed_len += width; |
| 678 | #else |
| 679 | putc (*s, rl_outstream); |
| 680 | s++; |
| 681 | printed_len++; |
| 682 | #endif |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | return printed_len; |
| 687 | } |
| 688 | |
| 689 | /* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and we |
| 690 | are using it, check for and output a single character for `special' |
| 691 | filenames. Return the number of characters we output. */ |
| 692 | |
| 693 | static int |
| 694 | print_filename (to_print, full_pathname) |
| 695 | char *to_print, *full_pathname; |
| 696 | { |
| 697 | int printed_len, extension_char, slen, tlen; |
| 698 | char *s, c, *new_full_pathname, *dn; |
| 699 | |
| 700 | extension_char = 0; |
| 701 | printed_len = fnprint (to_print); |
| 702 | |
| 703 | #if defined (VISIBLE_STATS) |
| 704 | if (rl_filename_completion_desired && (rl_visible_stats || _rl_complete_mark_directories)) |
| 705 | #else |
| 706 | if (rl_filename_completion_desired && _rl_complete_mark_directories) |
| 707 | #endif |
| 708 | { |
| 709 | /* If to_print != full_pathname, to_print is the basename of the |
| 710 | path passed. In this case, we try to expand the directory |
| 711 | name before checking for the stat character. */ |
| 712 | if (to_print != full_pathname) |
| 713 | { |
| 714 | /* Terminate the directory name. */ |
| 715 | c = to_print[-1]; |
| 716 | to_print[-1] = '\0'; |
| 717 | |
| 718 | /* If setting the last slash in full_pathname to a NUL results in |
| 719 | full_pathname being the empty string, we are trying to complete |
| 720 | files in the root directory. If we pass a null string to the |
| 721 | bash directory completion hook, for example, it will expand it |
| 722 | to the current directory. We just want the `/'. */ |
| 723 | if (full_pathname == 0 || *full_pathname == 0) |
| 724 | dn = "/"; |
| 725 | else if (full_pathname[0] != '/') |
| 726 | dn = full_pathname; |
| 727 | else if (full_pathname[1] == 0) |
| 728 | dn = "//"; /* restore trailing slash to `//' */ |
| 729 | else if (full_pathname[1] == '/' && full_pathname[2] == 0) |
| 730 | dn = "/"; /* don't turn /// into // */ |
| 731 | else |
| 732 | dn = full_pathname; |
| 733 | s = tilde_expand (dn); |
| 734 | if (rl_directory_completion_hook) |
| 735 | (*rl_directory_completion_hook) (&s); |
| 736 | |
| 737 | slen = strlen (s); |
| 738 | tlen = strlen (to_print); |
| 739 | new_full_pathname = (char *)xmalloc (slen + tlen + 2); |
| 740 | strcpy (new_full_pathname, s); |
| 741 | if (s[slen - 1] == '/') |
| 742 | slen--; |
| 743 | else |
| 744 | new_full_pathname[slen] = '/'; |
| 745 | new_full_pathname[slen] = '/'; |
| 746 | strcpy (new_full_pathname + slen + 1, to_print); |
| 747 | |
| 748 | #if defined (VISIBLE_STATS) |
| 749 | if (rl_visible_stats) |
| 750 | extension_char = stat_char (new_full_pathname); |
| 751 | else |
| 752 | #endif |
| 753 | if (path_isdir (new_full_pathname)) |
| 754 | extension_char = '/'; |
| 755 | |
| 756 | free (new_full_pathname); |
| 757 | to_print[-1] = c; |
| 758 | } |
| 759 | else |
| 760 | { |
| 761 | s = tilde_expand (full_pathname); |
| 762 | #if defined (VISIBLE_STATS) |
| 763 | if (rl_visible_stats) |
| 764 | extension_char = stat_char (s); |
| 765 | else |
| 766 | #endif |
| 767 | if (path_isdir (s)) |
| 768 | extension_char = '/'; |
| 769 | } |
| 770 | |
| 771 | free (s); |
| 772 | if (extension_char) |
| 773 | { |
| 774 | putc (extension_char, rl_outstream); |
| 775 | printed_len++; |
| 776 | } |
| 777 | } |
| 778 | |
| 779 | return printed_len; |
| 780 | } |
| 781 | |
| 782 | static char * |
| 783 | rl_quote_filename (s, rtype, qcp) |
| 784 | char *s; |
| 785 | int rtype; |
| 786 | char *qcp; |
| 787 | { |
| 788 | char *r; |
| 789 | |
| 790 | r = (char *)xmalloc (strlen (s) + 2); |
| 791 | *r = *rl_completer_quote_characters; |
| 792 | strcpy (r + 1, s); |
| 793 | if (qcp) |
| 794 | *qcp = *rl_completer_quote_characters; |
| 795 | return r; |
| 796 | } |
| 797 | |
| 798 | /* Find the bounds of the current word for completion purposes, and leave |
| 799 | rl_point set to the end of the word. This function skips quoted |
| 800 | substrings (characters between matched pairs of characters in |
| 801 | rl_completer_quote_characters). First we try to find an unclosed |
| 802 | quoted substring on which to do matching. If one is not found, we use |
| 803 | the word break characters to find the boundaries of the current word. |
| 804 | We call an application-specific function to decide whether or not a |
| 805 | particular word break character is quoted; if that function returns a |
| 806 | non-zero result, the character does not break a word. This function |
| 807 | returns the opening quote character if we found an unclosed quoted |
| 808 | substring, '\0' otherwise. FP, if non-null, is set to a value saying |
| 809 | which (shell-like) quote characters we found (single quote, double |
| 810 | quote, or backslash) anywhere in the string. DP, if non-null, is set to |
| 811 | the value of the delimiter character that caused a word break. */ |
| 812 | |
| 813 | char |
| 814 | _rl_find_completion_word (fp, dp) |
| 815 | int *fp, *dp; |
| 816 | { |
| 817 | int scan, end, found_quote, delimiter, pass_next, isbrk; |
| 818 | char quote_char, *brkchars; |
| 819 | |
| 820 | end = rl_point; |
| 821 | found_quote = delimiter = 0; |
| 822 | quote_char = '\0'; |
| 823 | |
| 824 | brkchars = 0; |
| 825 | if (rl_completion_word_break_hook) |
| 826 | brkchars = (*rl_completion_word_break_hook) (); |
| 827 | if (brkchars == 0) |
| 828 | brkchars = rl_completer_word_break_characters; |
| 829 | |
| 830 | if (rl_completer_quote_characters) |
| 831 | { |
| 832 | /* We have a list of characters which can be used in pairs to |
| 833 | quote substrings for the completer. Try to find the start |
| 834 | of an unclosed quoted substring. */ |
| 835 | /* FOUND_QUOTE is set so we know what kind of quotes we found. */ |
| 836 | for (scan = pass_next = 0; scan < end; scan = MB_NEXTCHAR (rl_line_buffer, scan, 1, MB_FIND_ANY)) |
| 837 | { |
| 838 | if (pass_next) |
| 839 | { |
| 840 | pass_next = 0; |
| 841 | continue; |
| 842 | } |
| 843 | |
| 844 | /* Shell-like semantics for single quotes -- don't allow backslash |
| 845 | to quote anything in single quotes, especially not the closing |
| 846 | quote. If you don't like this, take out the check on the value |
| 847 | of quote_char. */ |
| 848 | if (quote_char != '\'' && rl_line_buffer[scan] == '\\') |
| 849 | { |
| 850 | pass_next = 1; |
| 851 | found_quote |= RL_QF_BACKSLASH; |
| 852 | continue; |
| 853 | } |
| 854 | |
| 855 | if (quote_char != '\0') |
| 856 | { |
| 857 | /* Ignore everything until the matching close quote char. */ |
| 858 | if (rl_line_buffer[scan] == quote_char) |
| 859 | { |
| 860 | /* Found matching close. Abandon this substring. */ |
| 861 | quote_char = '\0'; |
| 862 | rl_point = end; |
| 863 | } |
| 864 | } |
| 865 | else if (strchr (rl_completer_quote_characters, rl_line_buffer[scan])) |
| 866 | { |
| 867 | /* Found start of a quoted substring. */ |
| 868 | quote_char = rl_line_buffer[scan]; |
| 869 | rl_point = scan + 1; |
| 870 | /* Shell-like quoting conventions. */ |
| 871 | if (quote_char == '\'') |
| 872 | found_quote |= RL_QF_SINGLE_QUOTE; |
| 873 | else if (quote_char == '"') |
| 874 | found_quote |= RL_QF_DOUBLE_QUOTE; |
| 875 | else |
| 876 | found_quote |= RL_QF_OTHER_QUOTE; |
| 877 | } |
| 878 | } |
| 879 | } |
| 880 | |
| 881 | if (rl_point == end && quote_char == '\0') |
| 882 | { |
| 883 | /* We didn't find an unclosed quoted substring upon which to do |
| 884 | completion, so use the word break characters to find the |
| 885 | substring on which to complete. */ |
| 886 | while (rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_ANY)) |
| 887 | { |
| 888 | scan = rl_line_buffer[rl_point]; |
| 889 | |
| 890 | if (strchr (brkchars, scan) == 0) |
| 891 | continue; |
| 892 | |
| 893 | /* Call the application-specific function to tell us whether |
| 894 | this word break character is quoted and should be skipped. */ |
| 895 | if (rl_char_is_quoted_p && found_quote && |
| 896 | (*rl_char_is_quoted_p) (rl_line_buffer, rl_point)) |
| 897 | continue; |
| 898 | |
| 899 | /* Convoluted code, but it avoids an n^2 algorithm with calls |
| 900 | to char_is_quoted. */ |
| 901 | break; |
| 902 | } |
| 903 | } |
| 904 | |
| 905 | /* If we are at an unquoted word break, then advance past it. */ |
| 906 | scan = rl_line_buffer[rl_point]; |
| 907 | |
| 908 | /* If there is an application-specific function to say whether or not |
| 909 | a character is quoted and we found a quote character, let that |
| 910 | function decide whether or not a character is a word break, even |
| 911 | if it is found in rl_completer_word_break_characters. Don't bother |
| 912 | if we're at the end of the line, though. */ |
| 913 | if (scan) |
| 914 | { |
| 915 | if (rl_char_is_quoted_p) |
| 916 | isbrk = (found_quote == 0 || |
| 917 | (*rl_char_is_quoted_p) (rl_line_buffer, rl_point) == 0) && |
| 918 | strchr (brkchars, scan) != 0; |
| 919 | else |
| 920 | isbrk = strchr (brkchars, scan) != 0; |
| 921 | |
| 922 | if (isbrk) |
| 923 | { |
| 924 | /* If the character that caused the word break was a quoting |
| 925 | character, then remember it as the delimiter. */ |
| 926 | if (rl_basic_quote_characters && |
| 927 | strchr (rl_basic_quote_characters, scan) && |
| 928 | (end - rl_point) > 1) |
| 929 | delimiter = scan; |
| 930 | |
| 931 | /* If the character isn't needed to determine something special |
| 932 | about what kind of completion to perform, then advance past it. */ |
| 933 | if (rl_special_prefixes == 0 || strchr (rl_special_prefixes, scan) == 0) |
| 934 | rl_point++; |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | if (fp) |
| 939 | *fp = found_quote; |
| 940 | if (dp) |
| 941 | *dp = delimiter; |
| 942 | |
| 943 | return (quote_char); |
| 944 | } |
| 945 | |
| 946 | static char ** |
| 947 | gen_completion_matches (text, start, end, our_func, found_quote, quote_char) |
| 948 | char *text; |
| 949 | int start, end; |
| 950 | rl_compentry_func_t *our_func; |
| 951 | int found_quote, quote_char; |
| 952 | { |
| 953 | char **matches, *temp; |
| 954 | |
| 955 | rl_completion_found_quote = found_quote; |
| 956 | rl_completion_quote_character = quote_char; |
| 957 | |
| 958 | /* If the user wants to TRY to complete, but then wants to give |
| 959 | up and use the default completion function, they set the |
| 960 | variable rl_attempted_completion_function. */ |
| 961 | if (rl_attempted_completion_function) |
| 962 | { |
| 963 | matches = (*rl_attempted_completion_function) (text, start, end); |
| 964 | |
| 965 | if (matches || rl_attempted_completion_over) |
| 966 | { |
| 967 | rl_attempted_completion_over = 0; |
| 968 | return (matches); |
| 969 | } |
| 970 | } |
| 971 | |
| 972 | /* Beware -- we're stripping the quotes here. Do this only if we know |
| 973 | we are doing filename completion and the application has defined a |
| 974 | filename dequoting function. */ |
| 975 | temp = (char *)NULL; |
| 976 | |
| 977 | if (found_quote && our_func == rl_filename_completion_function && |
| 978 | rl_filename_dequoting_function) |
| 979 | { |
| 980 | /* delete single and double quotes */ |
| 981 | temp = (*rl_filename_dequoting_function) (text, quote_char); |
| 982 | text = temp; /* not freeing text is not a memory leak */ |
| 983 | } |
| 984 | |
| 985 | matches = rl_completion_matches (text, our_func); |
| 986 | FREE (temp); |
| 987 | return matches; |
| 988 | } |
| 989 | |
| 990 | /* Filter out duplicates in MATCHES. This frees up the strings in |
| 991 | MATCHES. */ |
| 992 | static char ** |
| 993 | remove_duplicate_matches (matches) |
| 994 | char **matches; |
| 995 | { |
| 996 | char *lowest_common; |
| 997 | int i, j, newlen; |
| 998 | char dead_slot; |
| 999 | char **temp_array; |
| 1000 | |
| 1001 | /* Sort the items. */ |
| 1002 | for (i = 0; matches[i]; i++) |
| 1003 | ; |
| 1004 | |
| 1005 | /* Sort the array without matches[0], since we need it to |
| 1006 | stay in place no matter what. */ |
| 1007 | if (i) |
| 1008 | qsort (matches+1, i-1, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare); |
| 1009 | |
| 1010 | /* Remember the lowest common denominator for it may be unique. */ |
| 1011 | lowest_common = savestring (matches[0]); |
| 1012 | |
| 1013 | for (i = newlen = 0; matches[i + 1]; i++) |
| 1014 | { |
| 1015 | if (strcmp (matches[i], matches[i + 1]) == 0) |
| 1016 | { |
| 1017 | free (matches[i]); |
| 1018 | matches[i] = (char *)&dead_slot; |
| 1019 | } |
| 1020 | else |
| 1021 | newlen++; |
| 1022 | } |
| 1023 | |
| 1024 | /* We have marked all the dead slots with (char *)&dead_slot. |
| 1025 | Copy all the non-dead entries into a new array. */ |
| 1026 | temp_array = (char **)xmalloc ((3 + newlen) * sizeof (char *)); |
| 1027 | for (i = j = 1; matches[i]; i++) |
| 1028 | { |
| 1029 | if (matches[i] != (char *)&dead_slot) |
| 1030 | temp_array[j++] = matches[i]; |
| 1031 | } |
| 1032 | temp_array[j] = (char *)NULL; |
| 1033 | |
| 1034 | if (matches[0] != (char *)&dead_slot) |
| 1035 | free (matches[0]); |
| 1036 | |
| 1037 | /* Place the lowest common denominator back in [0]. */ |
| 1038 | temp_array[0] = lowest_common; |
| 1039 | |
| 1040 | /* If there is one string left, and it is identical to the |
| 1041 | lowest common denominator, then the LCD is the string to |
| 1042 | insert. */ |
| 1043 | if (j == 2 && strcmp (temp_array[0], temp_array[1]) == 0) |
| 1044 | { |
| 1045 | free (temp_array[1]); |
| 1046 | temp_array[1] = (char *)NULL; |
| 1047 | } |
| 1048 | return (temp_array); |
| 1049 | } |
| 1050 | |
| 1051 | /* Find the common prefix of the list of matches, and put it into |
| 1052 | matches[0]. */ |
| 1053 | static int |
| 1054 | compute_lcd_of_matches (match_list, matches, text) |
| 1055 | char **match_list; |
| 1056 | int matches; |
| 1057 | const char *text; |
| 1058 | { |
| 1059 | register int i, c1, c2, si; |
| 1060 | int low; /* Count of max-matched characters. */ |
| 1061 | char *dtext; /* dequoted TEXT, if needed */ |
| 1062 | #if defined (HANDLE_MULTIBYTE) |
| 1063 | int v; |
| 1064 | mbstate_t ps1, ps2; |
| 1065 | wchar_t wc1, wc2; |
| 1066 | #endif |
| 1067 | |
| 1068 | /* If only one match, just use that. Otherwise, compare each |
| 1069 | member of the list with the next, finding out where they |
| 1070 | stop matching. */ |
| 1071 | if (matches == 1) |
| 1072 | { |
| 1073 | match_list[0] = match_list[1]; |
| 1074 | match_list[1] = (char *)NULL; |
| 1075 | return 1; |
| 1076 | } |
| 1077 | |
| 1078 | for (i = 1, low = 100000; i < matches; i++) |
| 1079 | { |
| 1080 | #if defined (HANDLE_MULTIBYTE) |
| 1081 | if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 1082 | { |
| 1083 | memset (&ps1, 0, sizeof (mbstate_t)); |
| 1084 | memset (&ps2, 0, sizeof (mbstate_t)); |
| 1085 | } |
| 1086 | #endif |
| 1087 | if (_rl_completion_case_fold) |
| 1088 | { |
| 1089 | for (si = 0; |
| 1090 | (c1 = _rl_to_lower(match_list[i][si])) && |
| 1091 | (c2 = _rl_to_lower(match_list[i + 1][si])); |
| 1092 | si++) |
| 1093 | #if defined (HANDLE_MULTIBYTE) |
| 1094 | if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 1095 | { |
| 1096 | v = mbrtowc (&wc1, match_list[i]+si, strlen (match_list[i]+si), &ps1); |
| 1097 | mbrtowc (&wc2, match_list[i+1]+si, strlen (match_list[i+1]+si), &ps2); |
| 1098 | wc1 = towlower (wc1); |
| 1099 | wc2 = towlower (wc2); |
| 1100 | if (wc1 != wc2) |
| 1101 | break; |
| 1102 | else if (v > 1) |
| 1103 | si += v - 1; |
| 1104 | } |
| 1105 | else |
| 1106 | #endif |
| 1107 | if (c1 != c2) |
| 1108 | break; |
| 1109 | } |
| 1110 | else |
| 1111 | { |
| 1112 | for (si = 0; |
| 1113 | (c1 = match_list[i][si]) && |
| 1114 | (c2 = match_list[i + 1][si]); |
| 1115 | si++) |
| 1116 | #if defined (HANDLE_MULTIBYTE) |
| 1117 | if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 1118 | { |
| 1119 | mbstate_t ps_back = ps1; |
| 1120 | if (!_rl_compare_chars (match_list[i], si, &ps1, match_list[i+1], si, &ps2)) |
| 1121 | break; |
| 1122 | else if ((v = _rl_get_char_len (&match_list[i][si], &ps_back)) > 1) |
| 1123 | si += v - 1; |
| 1124 | } |
| 1125 | else |
| 1126 | #endif |
| 1127 | if (c1 != c2) |
| 1128 | break; |
| 1129 | } |
| 1130 | |
| 1131 | if (low > si) |
| 1132 | low = si; |
| 1133 | } |
| 1134 | |
| 1135 | /* If there were multiple matches, but none matched up to even the |
| 1136 | first character, and the user typed something, use that as the |
| 1137 | value of matches[0]. */ |
| 1138 | if (low == 0 && text && *text) |
| 1139 | { |
| 1140 | match_list[0] = (char *)xmalloc (strlen (text) + 1); |
| 1141 | strcpy (match_list[0], text); |
| 1142 | } |
| 1143 | else |
| 1144 | { |
| 1145 | match_list[0] = (char *)xmalloc (low + 1); |
| 1146 | |
| 1147 | /* XXX - this might need changes in the presence of multibyte chars */ |
| 1148 | |
| 1149 | /* If we are ignoring case, try to preserve the case of the string |
| 1150 | the user typed in the face of multiple matches differing in case. */ |
| 1151 | if (_rl_completion_case_fold) |
| 1152 | { |
| 1153 | /* We're making an assumption here: |
| 1154 | IF we're completing filenames AND |
| 1155 | the application has defined a filename dequoting function AND |
| 1156 | we found a quote character AND |
| 1157 | the application has requested filename quoting |
| 1158 | THEN |
| 1159 | we assume that TEXT was dequoted before checking against |
| 1160 | the file system and needs to be dequoted here before we |
| 1161 | check against the list of matches |
| 1162 | FI */ |
| 1163 | dtext = (char *)NULL; |
| 1164 | if (rl_filename_completion_desired && |
| 1165 | rl_filename_dequoting_function && |
| 1166 | rl_completion_found_quote && |
| 1167 | rl_filename_quoting_desired) |
| 1168 | { |
| 1169 | dtext = (*rl_filename_dequoting_function) ((char *)text, rl_completion_quote_character); |
| 1170 | text = dtext; |
| 1171 | } |
| 1172 | |
| 1173 | /* sort the list to get consistent answers. */ |
| 1174 | qsort (match_list+1, matches, sizeof(char *), (QSFUNC *)_rl_qsort_string_compare); |
| 1175 | |
| 1176 | si = strlen (text); |
| 1177 | if (si <= low) |
| 1178 | { |
| 1179 | for (i = 1; i <= matches; i++) |
| 1180 | if (strncmp (match_list[i], text, si) == 0) |
| 1181 | { |
| 1182 | strncpy (match_list[0], match_list[i], low); |
| 1183 | break; |
| 1184 | } |
| 1185 | /* no casematch, use first entry */ |
| 1186 | if (i > matches) |
| 1187 | strncpy (match_list[0], match_list[1], low); |
| 1188 | } |
| 1189 | else |
| 1190 | /* otherwise, just use the text the user typed. */ |
| 1191 | strncpy (match_list[0], text, low); |
| 1192 | |
| 1193 | FREE (dtext); |
| 1194 | } |
| 1195 | else |
| 1196 | strncpy (match_list[0], match_list[1], low); |
| 1197 | |
| 1198 | match_list[0][low] = '\0'; |
| 1199 | } |
| 1200 | |
| 1201 | return matches; |
| 1202 | } |
| 1203 | |
| 1204 | static int |
| 1205 | postprocess_matches (matchesp, matching_filenames) |
| 1206 | char ***matchesp; |
| 1207 | int matching_filenames; |
| 1208 | { |
| 1209 | char *t, **matches, **temp_matches; |
| 1210 | int nmatch, i; |
| 1211 | |
| 1212 | matches = *matchesp; |
| 1213 | |
| 1214 | if (matches == 0) |
| 1215 | return 0; |
| 1216 | |
| 1217 | /* It seems to me that in all the cases we handle we would like |
| 1218 | to ignore duplicate possiblilities. Scan for the text to |
| 1219 | insert being identical to the other completions. */ |
| 1220 | if (rl_ignore_completion_duplicates) |
| 1221 | { |
| 1222 | temp_matches = remove_duplicate_matches (matches); |
| 1223 | free (matches); |
| 1224 | matches = temp_matches; |
| 1225 | } |
| 1226 | |
| 1227 | /* If we are matching filenames, then here is our chance to |
| 1228 | do clever processing by re-examining the list. Call the |
| 1229 | ignore function with the array as a parameter. It can |
| 1230 | munge the array, deleting matches as it desires. */ |
| 1231 | if (rl_ignore_some_completions_function && matching_filenames) |
| 1232 | { |
| 1233 | for (nmatch = 1; matches[nmatch]; nmatch++) |
| 1234 | ; |
| 1235 | (void)(*rl_ignore_some_completions_function) (matches); |
| 1236 | if (matches == 0 || matches[0] == 0) |
| 1237 | { |
| 1238 | FREE (matches); |
| 1239 | *matchesp = (char **)0; |
| 1240 | return 0; |
| 1241 | } |
| 1242 | else |
| 1243 | { |
| 1244 | /* If we removed some matches, recompute the common prefix. */ |
| 1245 | for (i = 1; matches[i]; i++) |
| 1246 | ; |
| 1247 | if (i > 1 && i < nmatch) |
| 1248 | { |
| 1249 | t = matches[0]; |
| 1250 | compute_lcd_of_matches (matches, i - 1, t); |
| 1251 | FREE (t); |
| 1252 | } |
| 1253 | } |
| 1254 | } |
| 1255 | |
| 1256 | *matchesp = matches; |
| 1257 | return (1); |
| 1258 | } |
| 1259 | |
| 1260 | /* A convenience function for displaying a list of strings in |
| 1261 | columnar format on readline's output stream. MATCHES is the list |
| 1262 | of strings, in argv format, LEN is the number of strings in MATCHES, |
| 1263 | and MAX is the length of the longest string in MATCHES. */ |
| 1264 | void |
| 1265 | rl_display_match_list (matches, len, max) |
| 1266 | char **matches; |
| 1267 | int len, max; |
| 1268 | { |
| 1269 | int count, limit, printed_len, lines; |
| 1270 | int i, j, k, l; |
| 1271 | char *temp; |
| 1272 | |
| 1273 | /* How many items of MAX length can we fit in the screen window? */ |
| 1274 | max += 2; |
| 1275 | limit = _rl_screenwidth / max; |
| 1276 | if (limit != 1 && (limit * max == _rl_screenwidth)) |
| 1277 | limit--; |
| 1278 | |
| 1279 | /* Avoid a possible floating exception. If max > _rl_screenwidth, |
| 1280 | limit will be 0 and a divide-by-zero fault will result. */ |
| 1281 | if (limit == 0) |
| 1282 | limit = 1; |
| 1283 | |
| 1284 | /* How many iterations of the printing loop? */ |
| 1285 | count = (len + (limit - 1)) / limit; |
| 1286 | |
| 1287 | /* Watch out for special case. If LEN is less than LIMIT, then |
| 1288 | just do the inner printing loop. |
| 1289 | 0 < len <= limit implies count = 1. */ |
| 1290 | |
| 1291 | /* Sort the items if they are not already sorted. */ |
| 1292 | if (rl_ignore_completion_duplicates == 0) |
| 1293 | qsort (matches + 1, len, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare); |
| 1294 | |
| 1295 | rl_crlf (); |
| 1296 | |
| 1297 | lines = 0; |
| 1298 | if (_rl_print_completions_horizontally == 0) |
| 1299 | { |
| 1300 | /* Print the sorted items, up-and-down alphabetically, like ls. */ |
| 1301 | for (i = 1; i <= count; i++) |
| 1302 | { |
| 1303 | for (j = 0, l = i; j < limit; j++) |
| 1304 | { |
| 1305 | if (l > len || matches[l] == 0) |
| 1306 | break; |
| 1307 | else |
| 1308 | { |
| 1309 | temp = printable_part (matches[l]); |
| 1310 | printed_len = print_filename (temp, matches[l]); |
| 1311 | |
| 1312 | if (j + 1 < limit) |
| 1313 | for (k = 0; k < max - printed_len; k++) |
| 1314 | putc (' ', rl_outstream); |
| 1315 | } |
| 1316 | l += count; |
| 1317 | } |
| 1318 | rl_crlf (); |
| 1319 | lines++; |
| 1320 | if (_rl_page_completions && lines >= (_rl_screenheight - 1) && i < count) |
| 1321 | { |
| 1322 | lines = _rl_internal_pager (lines); |
| 1323 | if (lines < 0) |
| 1324 | return; |
| 1325 | } |
| 1326 | } |
| 1327 | } |
| 1328 | else |
| 1329 | { |
| 1330 | /* Print the sorted items, across alphabetically, like ls -x. */ |
| 1331 | for (i = 1; matches[i]; i++) |
| 1332 | { |
| 1333 | temp = printable_part (matches[i]); |
| 1334 | printed_len = print_filename (temp, matches[i]); |
| 1335 | /* Have we reached the end of this line? */ |
| 1336 | if (matches[i+1]) |
| 1337 | { |
| 1338 | if (i && (limit > 1) && (i % limit) == 0) |
| 1339 | { |
| 1340 | rl_crlf (); |
| 1341 | lines++; |
| 1342 | if (_rl_page_completions && lines >= _rl_screenheight - 1) |
| 1343 | { |
| 1344 | lines = _rl_internal_pager (lines); |
| 1345 | if (lines < 0) |
| 1346 | return; |
| 1347 | } |
| 1348 | } |
| 1349 | else |
| 1350 | for (k = 0; k < max - printed_len; k++) |
| 1351 | putc (' ', rl_outstream); |
| 1352 | } |
| 1353 | } |
| 1354 | rl_crlf (); |
| 1355 | } |
| 1356 | } |
| 1357 | |
| 1358 | /* Display MATCHES, a list of matching filenames in argv format. This |
| 1359 | handles the simple case -- a single match -- first. If there is more |
| 1360 | than one match, we compute the number of strings in the list and the |
| 1361 | length of the longest string, which will be needed by the display |
| 1362 | function. If the application wants to handle displaying the list of |
| 1363 | matches itself, it sets RL_COMPLETION_DISPLAY_MATCHES_HOOK to the |
| 1364 | address of a function, and we just call it. If we're handling the |
| 1365 | display ourselves, we just call rl_display_match_list. We also check |
| 1366 | that the list of matches doesn't exceed the user-settable threshold, |
| 1367 | and ask the user if he wants to see the list if there are more matches |
| 1368 | than RL_COMPLETION_QUERY_ITEMS. */ |
| 1369 | static void |
| 1370 | display_matches (matches) |
| 1371 | char **matches; |
| 1372 | { |
| 1373 | int len, max, i; |
| 1374 | char *temp; |
| 1375 | |
| 1376 | /* Move to the last visible line of a possibly-multiple-line command. */ |
| 1377 | _rl_move_vert (_rl_vis_botlin); |
| 1378 | |
| 1379 | /* Handle simple case first. What if there is only one answer? */ |
| 1380 | if (matches[1] == 0) |
| 1381 | { |
| 1382 | temp = printable_part (matches[0]); |
| 1383 | rl_crlf (); |
| 1384 | print_filename (temp, matches[0]); |
| 1385 | rl_crlf (); |
| 1386 | |
| 1387 | rl_forced_update_display (); |
| 1388 | rl_display_fixed = 1; |
| 1389 | |
| 1390 | return; |
| 1391 | } |
| 1392 | |
| 1393 | /* There is more than one answer. Find out how many there are, |
| 1394 | and find the maximum printed length of a single entry. */ |
| 1395 | for (max = 0, i = 1; matches[i]; i++) |
| 1396 | { |
| 1397 | temp = printable_part (matches[i]); |
| 1398 | len = fnwidth (temp); |
| 1399 | |
| 1400 | if (len > max) |
| 1401 | max = len; |
| 1402 | } |
| 1403 | |
| 1404 | len = i - 1; |
| 1405 | |
| 1406 | /* If the caller has defined a display hook, then call that now. */ |
| 1407 | if (rl_completion_display_matches_hook) |
| 1408 | { |
| 1409 | (*rl_completion_display_matches_hook) (matches, len, max); |
| 1410 | return; |
| 1411 | } |
| 1412 | |
| 1413 | /* If there are many items, then ask the user if she really wants to |
| 1414 | see them all. */ |
| 1415 | if (rl_completion_query_items > 0 && len >= rl_completion_query_items) |
| 1416 | { |
| 1417 | rl_crlf (); |
| 1418 | fprintf (rl_outstream, "Display all %d possibilities? (y or n)", len); |
| 1419 | fflush (rl_outstream); |
| 1420 | if (get_y_or_n (0) == 0) |
| 1421 | { |
| 1422 | rl_crlf (); |
| 1423 | |
| 1424 | rl_forced_update_display (); |
| 1425 | rl_display_fixed = 1; |
| 1426 | |
| 1427 | return; |
| 1428 | } |
| 1429 | } |
| 1430 | |
| 1431 | rl_display_match_list (matches, len, max); |
| 1432 | |
| 1433 | rl_forced_update_display (); |
| 1434 | rl_display_fixed = 1; |
| 1435 | } |
| 1436 | |
| 1437 | static char * |
| 1438 | make_quoted_replacement (match, mtype, qc) |
| 1439 | char *match; |
| 1440 | int mtype; |
| 1441 | char *qc; /* Pointer to quoting character, if any */ |
| 1442 | { |
| 1443 | int should_quote, do_replace; |
| 1444 | char *replacement; |
| 1445 | |
| 1446 | /* If we are doing completion on quoted substrings, and any matches |
| 1447 | contain any of the completer_word_break_characters, then auto- |
| 1448 | matically prepend the substring with a quote character (just pick |
| 1449 | the first one from the list of such) if it does not already begin |
| 1450 | with a quote string. FIXME: Need to remove any such automatically |
| 1451 | inserted quote character when it no longer is necessary, such as |
| 1452 | if we change the string we are completing on and the new set of |
| 1453 | matches don't require a quoted substring. */ |
| 1454 | replacement = match; |
| 1455 | |
| 1456 | should_quote = match && rl_completer_quote_characters && |
| 1457 | rl_filename_completion_desired && |
| 1458 | rl_filename_quoting_desired; |
| 1459 | |
| 1460 | if (should_quote) |
| 1461 | should_quote = should_quote && (!qc || !*qc || |
| 1462 | (rl_completer_quote_characters && strchr (rl_completer_quote_characters, *qc))); |
| 1463 | |
| 1464 | if (should_quote) |
| 1465 | { |
| 1466 | /* If there is a single match, see if we need to quote it. |
| 1467 | This also checks whether the common prefix of several |
| 1468 | matches needs to be quoted. */ |
| 1469 | should_quote = rl_filename_quote_characters |
| 1470 | ? (_rl_strpbrk (match, rl_filename_quote_characters) != 0) |
| 1471 | : 0; |
| 1472 | |
| 1473 | do_replace = should_quote ? mtype : NO_MATCH; |
| 1474 | /* Quote the replacement, since we found an embedded |
| 1475 | word break character in a potential match. */ |
| 1476 | if (do_replace != NO_MATCH && rl_filename_quoting_function) |
| 1477 | replacement = (*rl_filename_quoting_function) (match, do_replace, qc); |
| 1478 | } |
| 1479 | return (replacement); |
| 1480 | } |
| 1481 | |
| 1482 | static void |
| 1483 | insert_match (match, start, mtype, qc) |
| 1484 | char *match; |
| 1485 | int start, mtype; |
| 1486 | char *qc; |
| 1487 | { |
| 1488 | char *replacement; |
| 1489 | char oqc; |
| 1490 | |
| 1491 | oqc = qc ? *qc : '\0'; |
| 1492 | replacement = make_quoted_replacement (match, mtype, qc); |
| 1493 | |
| 1494 | /* Now insert the match. */ |
| 1495 | if (replacement) |
| 1496 | { |
| 1497 | /* Don't double an opening quote character. */ |
| 1498 | if (qc && *qc && start && rl_line_buffer[start - 1] == *qc && |
| 1499 | replacement[0] == *qc) |
| 1500 | start--; |
| 1501 | /* If make_quoted_replacement changed the quoting character, remove |
| 1502 | the opening quote and insert the (fully-quoted) replacement. */ |
| 1503 | else if (qc && (*qc != oqc) && start && rl_line_buffer[start - 1] == oqc && |
| 1504 | replacement[0] != oqc) |
| 1505 | start--; |
| 1506 | _rl_replace_text (replacement, start, rl_point - 1); |
| 1507 | if (replacement != match) |
| 1508 | free (replacement); |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | /* Append any necessary closing quote and a separator character to the |
| 1513 | just-inserted match. If the user has specified that directories |
| 1514 | should be marked by a trailing `/', append one of those instead. The |
| 1515 | default trailing character is a space. Returns the number of characters |
| 1516 | appended. If NONTRIVIAL_MATCH is set, we test for a symlink (if the OS |
| 1517 | has them) and don't add a suffix for a symlink to a directory. A |
| 1518 | nontrivial match is one that actually adds to the word being completed. |
| 1519 | The variable rl_completion_mark_symlink_dirs controls this behavior |
| 1520 | (it's initially set to the what the user has chosen, indicated by the |
| 1521 | value of _rl_complete_mark_symlink_dirs, but may be modified by an |
| 1522 | application's completion function). */ |
| 1523 | static int |
| 1524 | append_to_match (text, delimiter, quote_char, nontrivial_match) |
| 1525 | char *text; |
| 1526 | int delimiter, quote_char, nontrivial_match; |
| 1527 | { |
| 1528 | char temp_string[4], *filename; |
| 1529 | int temp_string_index, s; |
| 1530 | struct stat finfo; |
| 1531 | |
| 1532 | temp_string_index = 0; |
| 1533 | if (quote_char && rl_point && rl_completion_suppress_quote == 0 && |
| 1534 | rl_line_buffer[rl_point - 1] != quote_char) |
| 1535 | temp_string[temp_string_index++] = quote_char; |
| 1536 | |
| 1537 | if (delimiter) |
| 1538 | temp_string[temp_string_index++] = delimiter; |
| 1539 | else if (rl_completion_suppress_append == 0 && rl_completion_append_character) |
| 1540 | temp_string[temp_string_index++] = rl_completion_append_character; |
| 1541 | |
| 1542 | temp_string[temp_string_index++] = '\0'; |
| 1543 | |
| 1544 | if (rl_filename_completion_desired) |
| 1545 | { |
| 1546 | filename = tilde_expand (text); |
| 1547 | s = (nontrivial_match && rl_completion_mark_symlink_dirs == 0) |
| 1548 | ? LSTAT (filename, &finfo) |
| 1549 | : stat (filename, &finfo); |
| 1550 | if (s == 0 && S_ISDIR (finfo.st_mode)) |
| 1551 | { |
| 1552 | if (_rl_complete_mark_directories /* && rl_completion_suppress_append == 0 */) |
| 1553 | { |
| 1554 | /* This is clumsy. Avoid putting in a double slash if point |
| 1555 | is at the end of the line and the previous character is a |
| 1556 | slash. */ |
| 1557 | if (rl_point && rl_line_buffer[rl_point] == '\0' && rl_line_buffer[rl_point - 1] == '/') |
| 1558 | ; |
| 1559 | else if (rl_line_buffer[rl_point] != '/') |
| 1560 | rl_insert_text ("/"); |
| 1561 | } |
| 1562 | } |
| 1563 | #ifdef S_ISLNK |
| 1564 | /* Don't add anything if the filename is a symlink and resolves to a |
| 1565 | directory. */ |
| 1566 | else if (s == 0 && S_ISLNK (finfo.st_mode) && |
| 1567 | stat (filename, &finfo) == 0 && S_ISDIR (finfo.st_mode)) |
| 1568 | ; |
| 1569 | #endif |
| 1570 | else |
| 1571 | { |
| 1572 | if (rl_point == rl_end && temp_string_index) |
| 1573 | rl_insert_text (temp_string); |
| 1574 | } |
| 1575 | free (filename); |
| 1576 | } |
| 1577 | else |
| 1578 | { |
| 1579 | if (rl_point == rl_end && temp_string_index) |
| 1580 | rl_insert_text (temp_string); |
| 1581 | } |
| 1582 | |
| 1583 | return (temp_string_index); |
| 1584 | } |
| 1585 | |
| 1586 | static void |
| 1587 | insert_all_matches (matches, point, qc) |
| 1588 | char **matches; |
| 1589 | int point; |
| 1590 | char *qc; |
| 1591 | { |
| 1592 | int i; |
| 1593 | char *rp; |
| 1594 | |
| 1595 | rl_begin_undo_group (); |
| 1596 | /* remove any opening quote character; make_quoted_replacement will add |
| 1597 | it back. */ |
| 1598 | if (qc && *qc && point && rl_line_buffer[point - 1] == *qc) |
| 1599 | point--; |
| 1600 | rl_delete_text (point, rl_point); |
| 1601 | rl_point = point; |
| 1602 | |
| 1603 | if (matches[1]) |
| 1604 | { |
| 1605 | for (i = 1; matches[i]; i++) |
| 1606 | { |
| 1607 | rp = make_quoted_replacement (matches[i], SINGLE_MATCH, qc); |
| 1608 | rl_insert_text (rp); |
| 1609 | rl_insert_text (" "); |
| 1610 | if (rp != matches[i]) |
| 1611 | free (rp); |
| 1612 | } |
| 1613 | } |
| 1614 | else |
| 1615 | { |
| 1616 | rp = make_quoted_replacement (matches[0], SINGLE_MATCH, qc); |
| 1617 | rl_insert_text (rp); |
| 1618 | rl_insert_text (" "); |
| 1619 | if (rp != matches[0]) |
| 1620 | free (rp); |
| 1621 | } |
| 1622 | rl_end_undo_group (); |
| 1623 | } |
| 1624 | |
| 1625 | void |
| 1626 | _rl_free_match_list (matches) |
| 1627 | char **matches; |
| 1628 | { |
| 1629 | register int i; |
| 1630 | |
| 1631 | if (matches == 0) |
| 1632 | return; |
| 1633 | |
| 1634 | for (i = 0; matches[i]; i++) |
| 1635 | free (matches[i]); |
| 1636 | free (matches); |
| 1637 | } |
| 1638 | |
| 1639 | /* Complete the word at or before point. |
| 1640 | WHAT_TO_DO says what to do with the completion. |
| 1641 | `?' means list the possible completions. |
| 1642 | TAB means do standard completion. |
| 1643 | `*' means insert all of the possible completions. |
| 1644 | `!' means to do standard completion, and list all possible completions if |
| 1645 | there is more than one. |
| 1646 | `@' means to do standard completion, and list all possible completions if |
| 1647 | there is more than one and partial completion is not possible. */ |
| 1648 | int |
| 1649 | rl_complete_internal (what_to_do) |
| 1650 | int what_to_do; |
| 1651 | { |
| 1652 | char **matches; |
| 1653 | rl_compentry_func_t *our_func; |
| 1654 | int start, end, delimiter, found_quote, i, nontrivial_lcd; |
| 1655 | char *text, *saved_line_buffer; |
| 1656 | char quote_char; |
| 1657 | |
| 1658 | RL_SETSTATE(RL_STATE_COMPLETING); |
| 1659 | |
| 1660 | set_completion_defaults (what_to_do); |
| 1661 | |
| 1662 | saved_line_buffer = rl_line_buffer ? savestring (rl_line_buffer) : (char *)NULL; |
| 1663 | our_func = rl_completion_entry_function |
| 1664 | ? rl_completion_entry_function |
| 1665 | : rl_filename_completion_function; |
| 1666 | /* We now look backwards for the start of a filename/variable word. */ |
| 1667 | end = rl_point; |
| 1668 | found_quote = delimiter = 0; |
| 1669 | quote_char = '\0'; |
| 1670 | |
| 1671 | if (rl_point) |
| 1672 | /* This (possibly) changes rl_point. If it returns a non-zero char, |
| 1673 | we know we have an open quote. */ |
| 1674 | quote_char = _rl_find_completion_word (&found_quote, &delimiter); |
| 1675 | |
| 1676 | start = rl_point; |
| 1677 | rl_point = end; |
| 1678 | |
| 1679 | text = rl_copy_text (start, end); |
| 1680 | matches = gen_completion_matches (text, start, end, our_func, found_quote, quote_char); |
| 1681 | /* nontrivial_lcd is set if the common prefix adds something to the word |
| 1682 | being completed. */ |
| 1683 | nontrivial_lcd = matches && strcmp (text, matches[0]) != 0; |
| 1684 | free (text); |
| 1685 | |
| 1686 | if (matches == 0) |
| 1687 | { |
| 1688 | rl_ding (); |
| 1689 | FREE (saved_line_buffer); |
| 1690 | completion_changed_buffer = 0; |
| 1691 | RL_UNSETSTATE(RL_STATE_COMPLETING); |
| 1692 | return (0); |
| 1693 | } |
| 1694 | |
| 1695 | /* If we are matching filenames, the attempted completion function will |
| 1696 | have set rl_filename_completion_desired to a non-zero value. The basic |
| 1697 | rl_filename_completion_function does this. */ |
| 1698 | i = rl_filename_completion_desired; |
| 1699 | |
| 1700 | if (postprocess_matches (&matches, i) == 0) |
| 1701 | { |
| 1702 | rl_ding (); |
| 1703 | FREE (saved_line_buffer); |
| 1704 | completion_changed_buffer = 0; |
| 1705 | RL_UNSETSTATE(RL_STATE_COMPLETING); |
| 1706 | return (0); |
| 1707 | } |
| 1708 | |
| 1709 | switch (what_to_do) |
| 1710 | { |
| 1711 | case TAB: |
| 1712 | case '!': |
| 1713 | case '@': |
| 1714 | /* Insert the first match with proper quoting. */ |
| 1715 | if (*matches[0]) |
| 1716 | insert_match (matches[0], start, matches[1] ? MULT_MATCH : SINGLE_MATCH, "e_char); |
| 1717 | |
| 1718 | /* If there are more matches, ring the bell to indicate. |
| 1719 | If we are in vi mode, Posix.2 says to not ring the bell. |
| 1720 | If the `show-all-if-ambiguous' variable is set, display |
| 1721 | all the matches immediately. Otherwise, if this was the |
| 1722 | only match, and we are hacking files, check the file to |
| 1723 | see if it was a directory. If so, and the `mark-directories' |
| 1724 | variable is set, add a '/' to the name. If not, and we |
| 1725 | are at the end of the line, then add a space. */ |
| 1726 | if (matches[1]) |
| 1727 | { |
| 1728 | if (what_to_do == '!') |
| 1729 | { |
| 1730 | display_matches (matches); |
| 1731 | break; |
| 1732 | } |
| 1733 | else if (what_to_do == '@') |
| 1734 | { |
| 1735 | if (nontrivial_lcd == 0) |
| 1736 | display_matches (matches); |
| 1737 | break; |
| 1738 | } |
| 1739 | else if (rl_editing_mode != vi_mode) |
| 1740 | rl_ding (); /* There are other matches remaining. */ |
| 1741 | } |
| 1742 | else |
| 1743 | append_to_match (matches[0], delimiter, quote_char, nontrivial_lcd); |
| 1744 | |
| 1745 | break; |
| 1746 | |
| 1747 | case '*': |
| 1748 | insert_all_matches (matches, start, "e_char); |
| 1749 | break; |
| 1750 | |
| 1751 | case '?': |
| 1752 | display_matches (matches); |
| 1753 | break; |
| 1754 | |
| 1755 | default: |
| 1756 | fprintf (stderr, "\r\nreadline: bad value %d for what_to_do in rl_complete\n", what_to_do); |
| 1757 | rl_ding (); |
| 1758 | FREE (saved_line_buffer); |
| 1759 | RL_UNSETSTATE(RL_STATE_COMPLETING); |
| 1760 | return 1; |
| 1761 | } |
| 1762 | |
| 1763 | _rl_free_match_list (matches); |
| 1764 | |
| 1765 | /* Check to see if the line has changed through all of this manipulation. */ |
| 1766 | if (saved_line_buffer) |
| 1767 | { |
| 1768 | completion_changed_buffer = strcmp (rl_line_buffer, saved_line_buffer) != 0; |
| 1769 | free (saved_line_buffer); |
| 1770 | } |
| 1771 | |
| 1772 | RL_UNSETSTATE(RL_STATE_COMPLETING); |
| 1773 | return 0; |
| 1774 | } |
| 1775 | |
| 1776 | /***************************************************************/ |
| 1777 | /* */ |
| 1778 | /* Application-callable completion match generator functions */ |
| 1779 | /* */ |
| 1780 | /***************************************************************/ |
| 1781 | |
| 1782 | /* Return an array of (char *) which is a list of completions for TEXT. |
| 1783 | If there are no completions, return a NULL pointer. |
| 1784 | The first entry in the returned array is the substitution for TEXT. |
| 1785 | The remaining entries are the possible completions. |
| 1786 | The array is terminated with a NULL pointer. |
| 1787 | |
| 1788 | ENTRY_FUNCTION is a function of two args, and returns a (char *). |
| 1789 | The first argument is TEXT. |
| 1790 | The second is a state argument; it should be zero on the first call, and |
| 1791 | non-zero on subsequent calls. It returns a NULL pointer to the caller |
| 1792 | when there are no more matches. |
| 1793 | */ |
| 1794 | char ** |
| 1795 | rl_completion_matches (text, entry_function) |
| 1796 | const char *text; |
| 1797 | rl_compentry_func_t *entry_function; |
| 1798 | { |
| 1799 | /* Number of slots in match_list. */ |
| 1800 | int match_list_size; |
| 1801 | |
| 1802 | /* The list of matches. */ |
| 1803 | char **match_list; |
| 1804 | |
| 1805 | /* Number of matches actually found. */ |
| 1806 | int matches; |
| 1807 | |
| 1808 | /* Temporary string binder. */ |
| 1809 | char *string; |
| 1810 | |
| 1811 | matches = 0; |
| 1812 | match_list_size = 10; |
| 1813 | match_list = (char **)xmalloc ((match_list_size + 1) * sizeof (char *)); |
| 1814 | match_list[1] = (char *)NULL; |
| 1815 | |
| 1816 | while (string = (*entry_function) (text, matches)) |
| 1817 | { |
| 1818 | if (matches + 1 == match_list_size) |
| 1819 | match_list = (char **)xrealloc |
| 1820 | (match_list, ((match_list_size += 10) + 1) * sizeof (char *)); |
| 1821 | |
| 1822 | match_list[++matches] = string; |
| 1823 | match_list[matches + 1] = (char *)NULL; |
| 1824 | } |
| 1825 | |
| 1826 | /* If there were any matches, then look through them finding out the |
| 1827 | lowest common denominator. That then becomes match_list[0]. */ |
| 1828 | if (matches) |
| 1829 | compute_lcd_of_matches (match_list, matches, text); |
| 1830 | else /* There were no matches. */ |
| 1831 | { |
| 1832 | free (match_list); |
| 1833 | match_list = (char **)NULL; |
| 1834 | } |
| 1835 | return (match_list); |
| 1836 | } |
| 1837 | |
| 1838 | /* A completion function for usernames. |
| 1839 | TEXT contains a partial username preceded by a random |
| 1840 | character (usually `~'). */ |
| 1841 | char * |
| 1842 | rl_username_completion_function (text, state) |
| 1843 | const char *text; |
| 1844 | int state; |
| 1845 | { |
| 1846 | #if defined (__WIN32__) || defined (__OPENNT) |
| 1847 | return (char *)NULL; |
| 1848 | #else /* !__WIN32__ && !__OPENNT) */ |
| 1849 | static char *username = (char *)NULL; |
| 1850 | static struct passwd *entry; |
| 1851 | static int namelen, first_char, first_char_loc; |
| 1852 | char *value; |
| 1853 | |
| 1854 | if (state == 0) |
| 1855 | { |
| 1856 | FREE (username); |
| 1857 | |
| 1858 | first_char = *text; |
| 1859 | first_char_loc = first_char == '~'; |
| 1860 | |
| 1861 | username = savestring (&text[first_char_loc]); |
| 1862 | namelen = strlen (username); |
| 1863 | setpwent (); |
| 1864 | } |
| 1865 | |
| 1866 | #if defined (HAVE_GETPWENT) |
| 1867 | while (entry = getpwent ()) |
| 1868 | { |
| 1869 | /* Null usernames should result in all users as possible completions. */ |
| 1870 | if (namelen == 0 || (STREQN (username, entry->pw_name, namelen))) |
| 1871 | break; |
| 1872 | } |
| 1873 | #endif |
| 1874 | |
| 1875 | if (entry == 0) |
| 1876 | { |
| 1877 | #if defined (HAVE_GETPWENT) |
| 1878 | endpwent (); |
| 1879 | #endif |
| 1880 | return ((char *)NULL); |
| 1881 | } |
| 1882 | else |
| 1883 | { |
| 1884 | value = (char *)xmalloc (2 + strlen (entry->pw_name)); |
| 1885 | |
| 1886 | *value = *text; |
| 1887 | |
| 1888 | strcpy (value + first_char_loc, entry->pw_name); |
| 1889 | |
| 1890 | if (first_char == '~') |
| 1891 | rl_filename_completion_desired = 1; |
| 1892 | |
| 1893 | return (value); |
| 1894 | } |
| 1895 | #endif /* !__WIN32__ && !__OPENNT */ |
| 1896 | } |
| 1897 | |
| 1898 | /* Okay, now we write the entry_function for filename completion. In the |
| 1899 | general case. Note that completion in the shell is a little different |
| 1900 | because of all the pathnames that must be followed when looking up the |
| 1901 | completion for a command. */ |
| 1902 | char * |
| 1903 | rl_filename_completion_function (text, state) |
| 1904 | const char *text; |
| 1905 | int state; |
| 1906 | { |
| 1907 | static DIR *directory = (DIR *)NULL; |
| 1908 | static char *filename = (char *)NULL; |
| 1909 | static char *dirname = (char *)NULL; |
| 1910 | static char *users_dirname = (char *)NULL; |
| 1911 | static int filename_len; |
| 1912 | char *temp; |
| 1913 | int dirlen; |
| 1914 | struct dirent *entry; |
| 1915 | |
| 1916 | /* If we don't have any state, then do some initialization. */ |
| 1917 | if (state == 0) |
| 1918 | { |
| 1919 | /* If we were interrupted before closing the directory or reading |
| 1920 | all of its contents, close it. */ |
| 1921 | if (directory) |
| 1922 | { |
| 1923 | closedir (directory); |
| 1924 | directory = (DIR *)NULL; |
| 1925 | } |
| 1926 | FREE (dirname); |
| 1927 | FREE (filename); |
| 1928 | FREE (users_dirname); |
| 1929 | |
| 1930 | filename = savestring (text); |
| 1931 | if (*text == 0) |
| 1932 | text = "."; |
| 1933 | dirname = savestring (text); |
| 1934 | |
| 1935 | temp = strrchr (dirname, '/'); |
| 1936 | |
| 1937 | #if defined (__MSDOS__) |
| 1938 | /* special hack for //X/... */ |
| 1939 | if (dirname[0] == '/' && dirname[1] == '/' && ISALPHA ((unsigned char)dirname[2]) && dirname[3] == '/') |
| 1940 | temp = strrchr (dirname + 3, '/'); |
| 1941 | #endif |
| 1942 | |
| 1943 | if (temp) |
| 1944 | { |
| 1945 | strcpy (filename, ++temp); |
| 1946 | *temp = '\0'; |
| 1947 | } |
| 1948 | #if defined (__MSDOS__) |
| 1949 | /* searches from current directory on the drive */ |
| 1950 | else if (ISALPHA ((unsigned char)dirname[0]) && dirname[1] == ':') |
| 1951 | { |
| 1952 | strcpy (filename, dirname + 2); |
| 1953 | dirname[2] = '\0'; |
| 1954 | } |
| 1955 | #endif |
| 1956 | else |
| 1957 | { |
| 1958 | dirname[0] = '.'; |
| 1959 | dirname[1] = '\0'; |
| 1960 | } |
| 1961 | |
| 1962 | /* We aren't done yet. We also support the "~user" syntax. */ |
| 1963 | |
| 1964 | /* Save the version of the directory that the user typed. */ |
| 1965 | users_dirname = savestring (dirname); |
| 1966 | |
| 1967 | if (*dirname == '~') |
| 1968 | { |
| 1969 | temp = tilde_expand (dirname); |
| 1970 | free (dirname); |
| 1971 | dirname = temp; |
| 1972 | } |
| 1973 | |
| 1974 | if (rl_directory_rewrite_hook) |
| 1975 | (*rl_directory_rewrite_hook) (&dirname); |
| 1976 | |
| 1977 | if (rl_directory_completion_hook && (*rl_directory_completion_hook) (&dirname)) |
| 1978 | { |
| 1979 | free (users_dirname); |
| 1980 | users_dirname = savestring (dirname); |
| 1981 | } |
| 1982 | |
| 1983 | directory = opendir (dirname); |
| 1984 | filename_len = strlen (filename); |
| 1985 | |
| 1986 | rl_filename_completion_desired = 1; |
| 1987 | } |
| 1988 | |
| 1989 | /* At this point we should entertain the possibility of hacking wildcarded |
| 1990 | filenames, like /usr/man/man<WILD>/te<TAB>. If the directory name |
| 1991 | contains globbing characters, then build an array of directories, and |
| 1992 | then map over that list while completing. */ |
| 1993 | /* *** UNIMPLEMENTED *** */ |
| 1994 | |
| 1995 | /* Now that we have some state, we can read the directory. */ |
| 1996 | |
| 1997 | entry = (struct dirent *)NULL; |
| 1998 | while (directory && (entry = readdir (directory))) |
| 1999 | { |
| 2000 | /* Special case for no filename. If the user has disabled the |
| 2001 | `match-hidden-files' variable, skip filenames beginning with `.'. |
| 2002 | All other entries except "." and ".." match. */ |
| 2003 | if (filename_len == 0) |
| 2004 | { |
| 2005 | if (_rl_match_hidden_files == 0 && HIDDEN_FILE (entry->d_name)) |
| 2006 | continue; |
| 2007 | |
| 2008 | if (entry->d_name[0] != '.' || |
| 2009 | (entry->d_name[1] && |
| 2010 | (entry->d_name[1] != '.' || entry->d_name[2]))) |
| 2011 | break; |
| 2012 | } |
| 2013 | else |
| 2014 | { |
| 2015 | /* Otherwise, if these match up to the length of filename, then |
| 2016 | it is a match. */ |
| 2017 | if (_rl_completion_case_fold) |
| 2018 | { |
| 2019 | if ((_rl_to_lower (entry->d_name[0]) == _rl_to_lower (filename[0])) && |
| 2020 | (((int)D_NAMLEN (entry)) >= filename_len) && |
| 2021 | (_rl_strnicmp (filename, entry->d_name, filename_len) == 0)) |
| 2022 | break; |
| 2023 | } |
| 2024 | else |
| 2025 | { |
| 2026 | if ((entry->d_name[0] == filename[0]) && |
| 2027 | (((int)D_NAMLEN (entry)) >= filename_len) && |
| 2028 | (strncmp (filename, entry->d_name, filename_len) == 0)) |
| 2029 | break; |
| 2030 | } |
| 2031 | } |
| 2032 | } |
| 2033 | |
| 2034 | if (entry == 0) |
| 2035 | { |
| 2036 | if (directory) |
| 2037 | { |
| 2038 | closedir (directory); |
| 2039 | directory = (DIR *)NULL; |
| 2040 | } |
| 2041 | if (dirname) |
| 2042 | { |
| 2043 | free (dirname); |
| 2044 | dirname = (char *)NULL; |
| 2045 | } |
| 2046 | if (filename) |
| 2047 | { |
| 2048 | free (filename); |
| 2049 | filename = (char *)NULL; |
| 2050 | } |
| 2051 | if (users_dirname) |
| 2052 | { |
| 2053 | free (users_dirname); |
| 2054 | users_dirname = (char *)NULL; |
| 2055 | } |
| 2056 | |
| 2057 | return (char *)NULL; |
| 2058 | } |
| 2059 | else |
| 2060 | { |
| 2061 | /* dirname && (strcmp (dirname, ".") != 0) */ |
| 2062 | if (dirname && (dirname[0] != '.' || dirname[1])) |
| 2063 | { |
| 2064 | if (rl_complete_with_tilde_expansion && *users_dirname == '~') |
| 2065 | { |
| 2066 | dirlen = strlen (dirname); |
| 2067 | temp = (char *)xmalloc (2 + dirlen + D_NAMLEN (entry)); |
| 2068 | strcpy (temp, dirname); |
| 2069 | /* Canonicalization cuts off any final slash present. We |
| 2070 | may need to add it back. */ |
| 2071 | if (dirname[dirlen - 1] != '/') |
| 2072 | { |
| 2073 | temp[dirlen++] = '/'; |
| 2074 | temp[dirlen] = '\0'; |
| 2075 | } |
| 2076 | } |
| 2077 | else |
| 2078 | { |
| 2079 | dirlen = strlen (users_dirname); |
| 2080 | temp = (char *)xmalloc (2 + dirlen + D_NAMLEN (entry)); |
| 2081 | strcpy (temp, users_dirname); |
| 2082 | /* Make sure that temp has a trailing slash here. */ |
| 2083 | if (users_dirname[dirlen - 1] != '/') |
| 2084 | temp[dirlen++] = '/'; |
| 2085 | } |
| 2086 | |
| 2087 | strcpy (temp + dirlen, entry->d_name); |
| 2088 | } |
| 2089 | else |
| 2090 | temp = savestring (entry->d_name); |
| 2091 | |
| 2092 | return (temp); |
| 2093 | } |
| 2094 | } |
| 2095 | |
| 2096 | /* An initial implementation of a menu completion function a la tcsh. The |
| 2097 | first time (if the last readline command was not rl_menu_complete), we |
| 2098 | generate the list of matches. This code is very similar to the code in |
| 2099 | rl_complete_internal -- there should be a way to combine the two. Then, |
| 2100 | for each item in the list of matches, we insert the match in an undoable |
| 2101 | fashion, with the appropriate character appended (this happens on the |
| 2102 | second and subsequent consecutive calls to rl_menu_complete). When we |
| 2103 | hit the end of the match list, we restore the original unmatched text, |
| 2104 | ring the bell, and reset the counter to zero. */ |
| 2105 | int |
| 2106 | rl_menu_complete (count, ignore) |
| 2107 | int count, ignore; |
| 2108 | { |
| 2109 | rl_compentry_func_t *our_func; |
| 2110 | int matching_filenames, found_quote; |
| 2111 | |
| 2112 | static char *orig_text; |
| 2113 | static char **matches = (char **)0; |
| 2114 | static int match_list_index = 0; |
| 2115 | static int match_list_size = 0; |
| 2116 | static int orig_start, orig_end; |
| 2117 | static char quote_char; |
| 2118 | static int delimiter; |
| 2119 | |
| 2120 | /* The first time through, we generate the list of matches and set things |
| 2121 | up to insert them. */ |
| 2122 | if (rl_last_func != rl_menu_complete) |
| 2123 | { |
| 2124 | /* Clean up from previous call, if any. */ |
| 2125 | FREE (orig_text); |
| 2126 | if (matches) |
| 2127 | _rl_free_match_list (matches); |
| 2128 | |
| 2129 | match_list_index = match_list_size = 0; |
| 2130 | matches = (char **)NULL; |
| 2131 | |
| 2132 | /* Only the completion entry function can change these. */ |
| 2133 | set_completion_defaults ('%'); |
| 2134 | |
| 2135 | our_func = rl_completion_entry_function |
| 2136 | ? rl_completion_entry_function |
| 2137 | : rl_filename_completion_function; |
| 2138 | |
| 2139 | /* We now look backwards for the start of a filename/variable word. */ |
| 2140 | orig_end = rl_point; |
| 2141 | found_quote = delimiter = 0; |
| 2142 | quote_char = '\0'; |
| 2143 | |
| 2144 | if (rl_point) |
| 2145 | /* This (possibly) changes rl_point. If it returns a non-zero char, |
| 2146 | we know we have an open quote. */ |
| 2147 | quote_char = _rl_find_completion_word (&found_quote, &delimiter); |
| 2148 | |
| 2149 | orig_start = rl_point; |
| 2150 | rl_point = orig_end; |
| 2151 | |
| 2152 | orig_text = rl_copy_text (orig_start, orig_end); |
| 2153 | matches = gen_completion_matches (orig_text, orig_start, orig_end, |
| 2154 | our_func, found_quote, quote_char); |
| 2155 | |
| 2156 | /* If we are matching filenames, the attempted completion function will |
| 2157 | have set rl_filename_completion_desired to a non-zero value. The basic |
| 2158 | rl_filename_completion_function does this. */ |
| 2159 | matching_filenames = rl_filename_completion_desired; |
| 2160 | |
| 2161 | if (matches == 0 || postprocess_matches (&matches, matching_filenames) == 0) |
| 2162 | { |
| 2163 | rl_ding (); |
| 2164 | FREE (matches); |
| 2165 | matches = (char **)0; |
| 2166 | FREE (orig_text); |
| 2167 | orig_text = (char *)0; |
| 2168 | completion_changed_buffer = 0; |
| 2169 | return (0); |
| 2170 | } |
| 2171 | |
| 2172 | for (match_list_size = 0; matches[match_list_size]; match_list_size++) |
| 2173 | ; |
| 2174 | /* matches[0] is lcd if match_list_size > 1, but the circular buffer |
| 2175 | code below should take care of it. */ |
| 2176 | } |
| 2177 | |
| 2178 | /* Now we have the list of matches. Replace the text between |
| 2179 | rl_line_buffer[orig_start] and rl_line_buffer[rl_point] with |
| 2180 | matches[match_list_index], and add any necessary closing char. */ |
| 2181 | |
| 2182 | if (matches == 0 || match_list_size == 0) |
| 2183 | { |
| 2184 | rl_ding (); |
| 2185 | FREE (matches); |
| 2186 | matches = (char **)0; |
| 2187 | completion_changed_buffer = 0; |
| 2188 | return (0); |
| 2189 | } |
| 2190 | |
| 2191 | match_list_index += count; |
| 2192 | if (match_list_index < 0) |
| 2193 | match_list_index += match_list_size; |
| 2194 | else |
| 2195 | match_list_index %= match_list_size; |
| 2196 | |
| 2197 | if (match_list_index == 0 && match_list_size > 1) |
| 2198 | { |
| 2199 | rl_ding (); |
| 2200 | insert_match (orig_text, orig_start, MULT_MATCH, "e_char); |
| 2201 | } |
| 2202 | else |
| 2203 | { |
| 2204 | insert_match (matches[match_list_index], orig_start, SINGLE_MATCH, "e_char); |
| 2205 | append_to_match (matches[match_list_index], delimiter, quote_char, |
| 2206 | strcmp (orig_text, matches[match_list_index])); |
| 2207 | } |
| 2208 | |
| 2209 | completion_changed_buffer = 1; |
| 2210 | return (0); |
| 2211 | } |