diff options
Diffstat (limited to 'complete.c')
| -rw-r--r-- | complete.c | 254 |
1 files changed, 218 insertions, 36 deletions
@@ -55,6 +55,7 @@ extern int errno; /* System-specific feature definitions and include files. */ #include "rldefs.h" +#include "rlmbutil.h" /* Some standard library routines. */ #include "readline.h" @@ -100,10 +101,11 @@ static int stat_char PARAMS((char *)); static char *rl_quote_filename PARAMS((char *, int, char *)); -static int get_y_or_n PARAMS((void)); +static void set_completion_defaults PARAMS((int)); +static int get_y_or_n PARAMS((int)); +static int _rl_internal_pager PARAMS((int)); static char *printable_part PARAMS((char *)); static int print_filename PARAMS((char *, char *)); -static char find_completion_word PARAMS((int *, int *)); static char **gen_completion_matches PARAMS((char *, int, int, rl_compentry_func_t *, int, int)); @@ -116,7 +118,6 @@ static int compute_lcd_of_matches PARAMS((char **, int, const char *)); static int postprocess_matches PARAMS((char ***, int)); static char *make_quoted_replacement PARAMS((char *, int, char *)); -static void free_match_list PARAMS((char **)); /* **************************************************************** */ /* */ @@ -132,6 +133,12 @@ int _rl_complete_show_all = 0; /* If non-zero, completed directory names have a slash appended. */ int _rl_complete_mark_directories = 1; +/* If non-zero, the symlinked directory completion behavior introduced in + readline-4.2a is disabled, and symlinks that point to directories have + a slash appended (subject to the value of _rl_complete_mark_directories). + This is user-settable via the mark-symlinked-directories variable. */ +int _rl_complete_mark_symlink_dirs = 0; + /* If non-zero, completions are printed horizontally in alphabetical order, like `ls -x'. */ int _rl_print_completions_horizontally; @@ -194,10 +201,12 @@ int rl_completion_type = 0; she is sure she wants to see them all. */ int rl_completion_query_items = 100; +int _rl_page_completions = 1; + /* The basic list of characters that signal a break between words for the completer routine. The contents of this variable is what breaks words in the shell, i.e. " \t\n\"\\'`@$><=" */ -const char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{("; +const char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{("; /* }) */ /* List of basic quoting characters. */ const char *rl_basic_quote_characters = "\"'"; @@ -264,10 +273,26 @@ rl_dequote_func_t *rl_filename_dequoting_function = (rl_dequote_func_t *)NULL; completer. */ rl_linebuf_func_t *rl_char_is_quoted_p = (rl_linebuf_func_t *)NULL; +/* If non-zero, the completion functions don't append anything except a + possible closing quote. This is set to 0 by rl_complete_internal and + may be changed by an application-specific completion function. */ +int rl_completion_suppress_append = 0; + /* Character appended to completed words when at the end of the line. The default is a space. */ int rl_completion_append_character = ' '; +/* If non-zero, a slash will be appended to completed filenames that are + symbolic links to directory names, subject to the value of the + mark-directories variable (which is user-settable). This exists so + that application completion functions can override the user's preference + (set via the mark-symlinked-directories variable) if appropriate. + It's set to the value of _rl_complete_mark_symlink_dirs in + rl_complete_internal before any application-specific completion + function is called, so without that function doing anything, the user's + preferences are honored. */ +int rl_completion_mark_symlink_dirs; + /* If non-zero, inhibit completion (temporarily). */ int rl_inhibit_completion; @@ -290,7 +315,7 @@ rl_complete (ignore, invoking_key) int ignore, invoking_key; { if (rl_inhibit_completion) - return (rl_insert (ignore, invoking_key)); + return (_rl_insert_char (ignore, invoking_key)); else if (rl_last_func == rl_complete && !completion_changed_buffer) return (rl_complete_internal ('?')); else if (_rl_complete_show_all) @@ -314,15 +339,49 @@ rl_insert_completions (ignore, invoking_key) return (rl_complete_internal ('*')); } +/* Return the correct value to pass to rl_complete_internal performing + the same tests as rl_complete. This allows consecutive calls to an + application's completion function to list possible completions and for + an application-specific completion function to honor the + show-all-if-ambiguous readline variable. */ +int +rl_completion_mode (cfunc) + rl_command_func_t *cfunc; +{ + if (rl_last_func == cfunc && !completion_changed_buffer) + return '?'; + else if (_rl_complete_show_all) + return '!'; + else + return TAB; +} + /************************************/ /* */ /* Completion utility functions */ /* */ /************************************/ +/* Set default values for readline word completion. These are the variables + that application completion functions can change or inspect. */ +static void +set_completion_defaults (what_to_do) + int what_to_do; +{ + /* Only the completion entry function can change these. */ + rl_filename_completion_desired = 0; + rl_filename_quoting_desired = 1; + rl_completion_type = what_to_do; + rl_completion_suppress_append = 0; + + /* The completion entry function may optionally change this. */ + rl_completion_mark_symlink_dirs = _rl_complete_mark_symlink_dirs; +} + /* The user must press "y" or "n". Non-zero return means "y" pressed. */ static int -get_y_or_n () +get_y_or_n (for_pager) + int for_pager; { int c; @@ -338,10 +397,32 @@ get_y_or_n () return (0); if (c == ABORT_CHAR) _rl_abort_internal (); + if (for_pager && (c == NEWLINE || c == RETURN)) + return (2); + if (for_pager && (c == 'q' || c == 'Q')) + return (0); rl_ding (); } } +static int +_rl_internal_pager (lines) + int lines; +{ + int i; + + fprintf (rl_outstream, "--More--"); + fflush (rl_outstream); + i = get_y_or_n (1); + _rl_erase_entire_line (); + if (i == 0) + return -1; + else if (i == 2) + return (lines - 1); + else + return 0; +} + #if defined (VISIBLE_STATS) /* Return the character which best describes FILENAME. `@' for symbolic links @@ -402,19 +483,41 @@ stat_char (filename) /* Return the portion of PATHNAME that should be output when listing possible completions. If we are hacking filename completion, we are only interested in the basename, the portion following the - final slash. Otherwise, we return what we were passed. */ + final slash. Otherwise, we return what we were passed. Since + printing empty strings is not very informative, if we're doing + filename completion, and the basename is the empty string, we look + for the previous slash and return the portion following that. If + there's no previous slash, we just return what we were passed. */ static char * printable_part (pathname) char *pathname; { - char *temp; + char *temp, *x; + + if (rl_filename_completion_desired == 0) /* don't need to do anything */ + return (pathname); - temp = rl_filename_completion_desired ? strrchr (pathname, '/') : (char *)NULL; + temp = strrchr (pathname, '/'); #if defined (__MSDOS__) - if (rl_filename_completion_desired && temp == 0 && ISALPHA ((unsigned char)pathname[0]) && pathname[1] == ':') + if (temp == 0 && ISALPHA ((unsigned char)pathname[0]) && pathname[1] == ':') temp = pathname + 1; #endif - return (temp ? ++temp : pathname); + + if (temp == 0 || *temp == '\0') + return (pathname); + /* If the basename is NULL, we might have a pathname like '/usr/src/'. + Look for a previous slash and, if one is found, return the portion + following that slash. If there's no previous slash, just return the + pathname we were passed. */ + else if (temp[1] == '\0') + { + for (x = temp - 1; x > pathname; x--) + if (*x == '/') + break; + return ((*x == '/') ? x + 1 : pathname); + } + else + return ++temp; } /* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and we @@ -543,8 +646,8 @@ rl_quote_filename (s, rtype, qcp) quote, or backslash) anywhere in the string. DP, if non-null, is set to the value of the delimiter character that caused a word break. */ -static char -find_completion_word (fp, dp) +char +_rl_find_completion_word (fp, dp) int *fp, *dp; { int scan, end, found_quote, delimiter, pass_next, isbrk; @@ -599,6 +702,8 @@ find_completion_word (fp, dp) found_quote |= RL_QF_SINGLE_QUOTE; else if (quote_char == '"') found_quote |= RL_QF_DOUBLE_QUOTE; + else + found_quote |= RL_QF_OTHER_QUOTE; } } } @@ -608,7 +713,11 @@ find_completion_word (fp, dp) /* We didn't find an unclosed quoted substring upon which to do completion, so use the word break characters to find the substring on which to complete. */ +#if defined (HANDLE_MULTIBYTE) + while (rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_ANY)) +#else while (--rl_point) +#endif { scan = rl_line_buffer[rl_point]; @@ -780,6 +889,11 @@ compute_lcd_of_matches (match_list, matches, text) { register int i, c1, c2, si; int low; /* Count of max-matched characters. */ +#if defined (HANDLE_MULTIBYTE) + int v; + mbstate_t ps1, ps2; + wchar_t wc1, wc2; +#endif /* If only one match, just use that. Otherwise, compare each member of the list with the next, finding out where they @@ -793,12 +907,33 @@ compute_lcd_of_matches (match_list, matches, text) for (i = 1, low = 100000; i < matches; i++) { +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + memset (&ps1, 0, sizeof (mbstate_t)); + memset (&ps2, 0, sizeof (mbstate_t)); + } +#endif if (_rl_completion_case_fold) { for (si = 0; (c1 = _rl_to_lower(match_list[i][si])) && (c2 = _rl_to_lower(match_list[i + 1][si])); si++) +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + v = mbrtowc (&wc1, match_list[i]+si, strlen (match_list[i]+si), &ps1); + mbrtowc (&wc2, match_list[i+1]+si, strlen (match_list[i+1]+si), &ps2); + wc1 = towlower (wc1); + wc2 = towlower (wc2); + if (wc1 != wc2) + break; + else if (v > 1) + si += v - 1; + } + else +#endif if (c1 != c2) break; } @@ -808,6 +943,17 @@ compute_lcd_of_matches (match_list, matches, text) (c1 = match_list[i][si]) && (c2 = match_list[i + 1][si]); si++) +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + mbstate_t ps_back = ps1; + if (!_rl_compare_chars (match_list[i], si, &ps1, match_list[i+1], si, &ps2)) + break; + else if ((v = _rl_get_char_len (&match_list[i][si], &ps_back)) > 1) + si += v - 1; + } + else +#endif if (c1 != c2) break; } @@ -828,6 +974,8 @@ compute_lcd_of_matches (match_list, matches, text) { match_list[0] = (char *)xmalloc (low + 1); + /* XXX - this might need changes in the presence of multibyte chars */ + /* If we are ignoring case, try to preserve the case of the string the user typed in the face of multiple matches differing in case. */ if (_rl_completion_case_fold) @@ -871,6 +1019,9 @@ postprocess_matches (matchesp, matching_filenames) matches = *matchesp; + if (matches == 0) + return 0; + /* It seems to me that in all the cases we handle we would like to ignore duplicate possiblilities. Scan for the text to insert being identical to the other completions. */ @@ -923,7 +1074,7 @@ rl_display_match_list (matches, len, max) char **matches; int len, max; { - int count, limit, printed_len; + int count, limit, printed_len, lines; int i, j, k, l; char *temp; @@ -951,6 +1102,7 @@ rl_display_match_list (matches, len, max) rl_crlf (); + lines = 0; if (_rl_print_completions_horizontally == 0) { /* Print the sorted items, up-and-down alphabetically, like ls. */ @@ -972,6 +1124,13 @@ rl_display_match_list (matches, len, max) l += count; } rl_crlf (); + lines++; + if (_rl_page_completions && lines >= (_rl_screenheight - 1) && i < count) + { + lines = _rl_internal_pager (lines); + if (lines < 0) + return; + } } } else @@ -985,7 +1144,16 @@ rl_display_match_list (matches, len, max) if (matches[i+1]) { if (i && (limit > 1) && (i % limit) == 0) - rl_crlf (); + { + rl_crlf (); + lines++; + if (_rl_page_completions && lines >= _rl_screenheight - 1) + { + lines = _rl_internal_pager (lines); + if (lines < 0) + return; + } + } else for (k = 0; k < max - printed_len; k++) putc (' ', rl_outstream); @@ -1057,7 +1225,7 @@ display_matches (matches) rl_crlf (); fprintf (rl_outstream, "Display all %d possibilities? (y or n)", len); fflush (rl_outstream); - if (get_y_or_n () == 0) + if (get_y_or_n (0) == 0) { rl_crlf (); @@ -1155,7 +1323,11 @@ insert_match (match, start, mtype, qc) default trailing character is a space. Returns the number of characters appended. If NONTRIVIAL_MATCH is set, we test for a symlink (if the OS has them) and don't add a suffix for a symlink to a directory. A - nontrivial match is one that actually adds to the word being completed. */ + nontrivial match is one that actually adds to the word being completed. + The variable rl_completion_mark_symlink_dirs controls this behavior + (it's initially set to the what the user has chosen, indicated by the + value of _rl_complete_mark_symlink_dirs, but may be modified by an + application's completion function). */ static int append_to_match (text, delimiter, quote_char, nontrivial_match) char *text; @@ -1171,7 +1343,7 @@ append_to_match (text, delimiter, quote_char, nontrivial_match) if (delimiter) temp_string[temp_string_index++] = delimiter; - else if (rl_completion_append_character) + else if (rl_completion_suppress_append == 0 && rl_completion_append_character) temp_string[temp_string_index++] = rl_completion_append_character; temp_string[temp_string_index++] = '\0'; @@ -1179,11 +1351,21 @@ append_to_match (text, delimiter, quote_char, nontrivial_match) if (rl_filename_completion_desired) { filename = tilde_expand (text); - s = nontrivial_match ? LSTAT (filename, &finfo) : stat (filename, &finfo); + s = (nontrivial_match && rl_completion_mark_symlink_dirs == 0) + ? LSTAT (filename, &finfo) + : stat (filename, &finfo); if (s == 0 && S_ISDIR (finfo.st_mode)) { - if (_rl_complete_mark_directories && rl_line_buffer[rl_point] != '/') - rl_insert_text ("/"); + if (_rl_complete_mark_directories) + { + /* This is clumsy. Avoid putting in a double slash if point + is at the end of the line and the previous character is a + slash. */ + if (rl_point && rl_line_buffer[rl_point] == '\0' && rl_line_buffer[rl_point - 1] == '/') + ; + else if (rl_line_buffer[rl_point] != '/') + rl_insert_text ("/"); + } } #ifdef S_ISLNK /* Don't add anything if the filename is a symlink and resolves to a @@ -1194,14 +1376,14 @@ append_to_match (text, delimiter, quote_char, nontrivial_match) #endif else { - if (rl_point == rl_end) + if (rl_point == rl_end && temp_string_index) rl_insert_text (temp_string); } free (filename); } else { - if (rl_point == rl_end) + if (rl_point == rl_end && temp_string_index) rl_insert_text (temp_string); } @@ -1247,12 +1429,15 @@ insert_all_matches (matches, point, qc) rl_end_undo_group (); } -static void -free_match_list (matches) +void +_rl_free_match_list (matches) char **matches; { register int i; + if (matches == 0) + return; + for (i = 0; matches[i]; i++) free (matches[i]); free (matches); @@ -1276,10 +1461,8 @@ rl_complete_internal (what_to_do) char quote_char; RL_SETSTATE(RL_STATE_COMPLETING); - /* Only the completion entry function can change these. */ - rl_filename_completion_desired = 0; - rl_filename_quoting_desired = 1; - rl_completion_type = what_to_do; + + set_completion_defaults (what_to_do); saved_line_buffer = rl_line_buffer ? savestring (rl_line_buffer) : (char *)NULL; our_func = rl_completion_entry_function @@ -1294,7 +1477,7 @@ rl_complete_internal (what_to_do) if (rl_point) /* This (possibly) changes rl_point. If it returns a non-zero char, we know we have an open quote. */ - quote_char = find_completion_word (&found_quote, &delimiter); + quote_char = _rl_find_completion_word (&found_quote, &delimiter); start = rl_point; rl_point = end; @@ -1310,6 +1493,7 @@ rl_complete_internal (what_to_do) { rl_ding (); FREE (saved_line_buffer); + completion_changed_buffer = 0; RL_UNSETSTATE(RL_STATE_COMPLETING); return (0); } @@ -1375,7 +1559,7 @@ rl_complete_internal (what_to_do) return 1; } - free_match_list (matches); + _rl_free_match_list (matches); /* Check to see if the line has changed through all of this manipulation. */ if (saved_line_buffer) @@ -1735,15 +1919,13 @@ rl_menu_complete (count, ignore) /* Clean up from previous call, if any. */ FREE (orig_text); if (matches) - free_match_list (matches); + _rl_free_match_list (matches); match_list_index = match_list_size = 0; matches = (char **)NULL; /* Only the completion entry function can change these. */ - rl_filename_completion_desired = 0; - rl_filename_quoting_desired = 1; - rl_completion_type = '%'; + set_completion_defaults ('%'); our_func = rl_completion_entry_function ? rl_completion_entry_function @@ -1757,7 +1939,7 @@ rl_menu_complete (count, ignore) if (rl_point) /* This (possibly) changes rl_point. If it returns a non-zero char, we know we have an open quote. */ - quote_char = find_completion_word (&found_quote, &delimiter); + quote_char = _rl_find_completion_word (&found_quote, &delimiter); orig_start = rl_point; rl_point = orig_end; |