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Diffstat (limited to 'src/minibuf.c')
| -rw-r--r-- | src/minibuf.c | 1181 |
1 files changed, 1181 insertions, 0 deletions
diff --git a/src/minibuf.c b/src/minibuf.c new file mode 100644 index 00000000000..83bf6522b1f --- /dev/null +++ b/src/minibuf.c @@ -0,0 +1,1181 @@ +/* Minibuffer input and completion. + Copyright (C) 1985, 1986, 1990 Free Software Foundation, Inc. + +This file is part of GNU Emacs. + +GNU Emacs is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 1, or (at your option) +any later version. + +GNU Emacs is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Emacs; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +#include "config.h" +#include "lisp.h" +#include "commands.h" +#include "buffer.h" +#include "window.h" +#include "syntax.h" +#include "dispextern.h" + +#define min(a, b) ((a) < (b) ? (a) : (b)) + +/* List of buffers for use as minibuffers. + The first element of the list is used for the outermost minibuffer invocation, + the next element is used for a recursive minibuffer invocation, etc. + The list is extended at the end as deeped minibuffer recursions are encountered. */ +Lisp_Object Vminibuffer_list; + +struct minibuf_save_data + { + char *prompt; + int prompt_width; + Lisp_Object help_form; + Lisp_Object current_prefix_arg; + }; + +int minibuf_save_vector_size; +struct minibuf_save_data *minibuf_save_vector; + +/* Depth in minibuffer invocations. */ +int minibuf_level; + +/* Nonzero means display completion help for invalid input. */ +int completion_auto_help; + +/* Fread_minibuffer leaves the input, as a string, here. */ +Lisp_Object last_minibuf_string; + +/* Nonzero means let functions called when within a minibuffer + invoke recursive minibuffers (to read arguments, or whatever). */ +int enable_recursive_minibuffers; + +/* help-form is bound to this while in the minibuffer. */ +Lisp_Object Vminibuffer_help_form; + +/* Nonzero means completion ignores case. */ +int completion_ignore_case; + +Lisp_Object Quser_variable_p; + +/* Width in columns of current minibuffer prompt. */ +extern int minibuf_prompt_width; + +/* Actual minibuffer invocation. */ + +void read_minibuf_unwind (); +Lisp_Object get_minibuffer (); +Lisp_Object read_minibuf (); + +Lisp_Object +read_minibuf (map, initial, prompt, expflag) + Lisp_Object map; + Lisp_Object initial; + Lisp_Object prompt; + int expflag; +{ + register Lisp_Object val; + int count = specpdl_ptr - specpdl; + struct gcpro gcpro1, gcpro2; + + if (XTYPE (prompt) != Lisp_String) + prompt = build_string (""); + + /* Emacs in -batch mode calls minibuffer: print the prompt. */ + if (noninteractive) + printf ("%s", XSTRING (prompt)->data); + + if (!enable_recursive_minibuffers && + (EQ (selected_window, minibuf_window))) + error ("Command attempted to use minibuffer while in minibuffer"); + + if (minibuf_level == minibuf_save_vector_size) + minibuf_save_vector = + (struct minibuf_save_data *) xrealloc (minibuf_save_vector, + (minibuf_save_vector_size *= 2) * sizeof (struct minibuf_save_data)); + minibuf_save_vector[minibuf_level].prompt = minibuf_prompt; + minibuf_save_vector[minibuf_level].prompt_width = minibuf_prompt_width; + minibuf_prompt_width = 0; + /* >> Why is this done this way rather than binding these variables? */ + minibuf_save_vector[minibuf_level].help_form = Vhelp_form; + minibuf_save_vector[minibuf_level].current_prefix_arg = Vcurrent_prefix_arg; + GCPRO2 (minibuf_save_vector[minibuf_level].help_form, + minibuf_save_vector[minibuf_level].current_prefix_arg); + + + record_unwind_protect (Fset_window_configuration, + Fcurrent_window_configuration ()); + + val = current_buffer->directory; + Fset_buffer (get_minibuffer (minibuf_level)); + current_buffer->directory = val; + + Fset_window_buffer (minibuf_window, Fcurrent_buffer ()); + Fselect_window (minibuf_window); + XFASTINT (XWINDOW (minibuf_window)->hscroll) = 0; + + Ferase_buffer (); + minibuf_level++; + record_unwind_protect (read_minibuf_unwind, Qnil); + Vminibuf_scroll_window = Qnil; + + if (!NULL (initial)) + Finsert (1, &initial); + + minibuf_prompt = (char *) alloca (XSTRING (prompt)->size + 1); + bcopy (XSTRING (prompt)->data, minibuf_prompt, XSTRING (prompt)->size + 1); + echo_area_contents = 0; + + Vhelp_form = Vminibuffer_help_form; + current_buffer->keymap = map; + recursive_edit_1 (); + + /* If cursor is on the minibuffer line, + show the user we have exited by putting it in column 0. */ + if (cursor_vpos >= XFASTINT (XWINDOW (minibuf_window)->top) + && !noninteractive) + { + cursor_hpos = 0; + update_screen (1, 1); + } + + /* Make minibuffer contents into a string */ + val = make_string (BEG_ADDR, Z - BEG); + bcopy (GAP_END_ADDR, XSTRING (val)->data + GPT - BEG, Z - GPT); + unbind_to (count); + UNGCPRO; + + /* VAL is the string of minibuffer text. */ + + last_minibuf_string = val; + + /* If Lisp form desired instead of string, parse it */ + if (expflag) + val = Fread (val); + + return val; +} + +/* Return a buffer to be used as the minibuffer at depth `depth'. + depth = 0 is the lowest allowed argument, and that is the value + used for nonrecursive minibuffer invocations */ + +Lisp_Object +get_minibuffer (depth) + int depth; +{ + Lisp_Object tail, num, buf; + char name[14]; + extern Lisp_Object nconc2 (); + + XFASTINT (num) = depth; + tail = Fnthcdr (num, Vminibuffer_list); + if (NULL (tail)) + { + tail = Fcons (Qnil, Qnil); + Vminibuffer_list = nconc2 (Vminibuffer_list, tail); + } + buf = Fcar (tail); + if (NULL (buf) || NULL (XBUFFER (buf)->name)) + { + sprintf (name, " *Minibuf-%d*", depth); + buf = Fget_buffer_create (build_string (name)); + XCONS (tail)->car = buf; + } + else + reset_buffer (XBUFFER (buf)); + return buf; +} + +/* This function is called on exiting minibuffer, whether normally or not, + and it restores the current window, buffer, etc. */ + +void +read_minibuf_unwind () +{ + /* Erase the minibuffer we were using at this level. */ + Fset_buffer (XWINDOW (minibuf_window)->buffer); + /* Prevent error if user has done something strange. */ + current_buffer->read_only = Qnil; + Ferase_buffer (); + + /* If this was a recursive minibuffer, + tie the minibuffer window back to the outer level minibuffer buffer */ + minibuf_level--; + /* Make sure minibuffer window is erased, not ignored */ + windows_or_buffers_changed++; + XFASTINT (XWINDOW (minibuf_window)->last_modified) = 0; + + /* Restore prompt from outer minibuffer */ + minibuf_prompt = minibuf_save_vector[minibuf_level].prompt; + minibuf_prompt_width = minibuf_save_vector[minibuf_level].prompt_width; + Vhelp_form = minibuf_save_vector[minibuf_level].help_form; + Vcurrent_prefix_arg = minibuf_save_vector[minibuf_level].current_prefix_arg; +} + +DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 4, 0, + "Read a string from the minibuffer, prompting with string PROMPT.\n\ +If optional second arg INITIAL-CONTENTS is non-nil, it is a string\n\ + to be inserted into the minibuffer before reading input.\n\ +Third arg KEYMAP is a keymap to use whilst reading; the default is\n\ + minibuffer-local-map.\n\ +If fourth arg READ is non-nil, then interpret the result as a lisp object\n\ + and return that object (ie (car (read-from-string <input-string>)))") + (prompt, initial_input, keymap, read) + Lisp_Object prompt, initial_input, keymap, read; +{ + CHECK_STRING (prompt, 0); + if (!NULL (initial_input)) + CHECK_STRING (initial_input, 1); + if (NULL (keymap)) + keymap = Vminibuffer_local_map; + else + keymap = get_keymap (keymap,2); + return read_minibuf (keymap, initial_input, prompt, !NULL(read)); +} + +DEFUN ("read-minibuffer", Fread_minibuffer, Sread_minibuffer, 1, 2, 0, + "Return a Lisp object read using the minibuffer.\n\ +Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ +is a string to insert in the minibuffer before reading.") + (prompt, initial_contents) + Lisp_Object prompt, initial_contents; +{ + CHECK_STRING (prompt, 0); + if (!NULL (initial_contents)) + CHECK_STRING (initial_contents, 1) + return read_minibuf (Vminibuffer_local_map, initial_contents, prompt, 1); +} + +DEFUN ("eval-minibuffer", Feval_minibuffer, Seval_minibuffer, 1, 2, 0, + "Return value of Lisp expression read using the minibuffer.\n\ +Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ +is a string to insert in the minibuffer before reading.") + (prompt, initial_contents) + Lisp_Object prompt, initial_contents; +{ + return Feval (Fread_minibuffer (prompt, initial_contents)); +} + +/* Functions that use the minibuffer to read various things. */ + +DEFUN ("read-string", Fread_string, Sread_string, 1, 2, 0, + "Read a string from the minibuffer, prompting with string PROMPT.\n\ +If non-nil second arg INITIAL-INPUT is a string to insert before reading.") + (prompt, initial_input) + Lisp_Object prompt, initial_input; +{ + return Fread_from_minibuffer (prompt, initial_input, Qnil, Qnil); +} + +DEFUN ("read-no-blanks-input", Fread_no_blanks_input, Sread_no_blanks_input, 2, 2, 0, + "Args PROMPT and INIT, strings. Read a string from the terminal, not allowing blanks.\n\ +Prompt with PROMPT, and provide INIT as an initial value of the input string.") + (prompt, init) + Lisp_Object prompt, init; +{ + CHECK_STRING (prompt, 0); + CHECK_STRING (init, 1); + + return read_minibuf (Vminibuffer_local_ns_map, init, prompt, 0); +} + +DEFUN ("read-command", Fread_command, Sread_command, 1, 1, 0, + "One arg PROMPT, a string. Read the name of a command and return as a symbol.\n\ +Prompts with PROMPT.") + (prompt) + Lisp_Object prompt; +{ + return Fintern (Fcompleting_read (prompt, Vobarray, Qcommandp, Qt, Qnil), + Qnil); +} + +#ifdef NOTDEF +DEFUN ("read-function", Fread_function, Sread_function, 1, 1, 0, + "One arg PROMPT, a string. Read the name of a function and return as a symbol.\n\ +Prompts with PROMPT.") + (prompt) + Lisp_Object prompt; +{ + return Fintern (Fcompleting_read (prompt, Vobarray, Qfboundp, Qt, Qnil), + Qnil); +} +#endif /* NOTDEF */ + +DEFUN ("read-variable", Fread_variable, Sread_variable, 1, 1, 0, + "One arg PROMPT, a string. Read the name of a user variable and return\n\ +it as a symbol. Prompts with PROMPT.\n\ +A user variable is one whose documentation starts with a \"*\" character.") + (prompt) + Lisp_Object prompt; +{ + return Fintern (Fcompleting_read (prompt, Vobarray, + Quser_variable_p, Qt, Qnil), + Qnil); +} + +DEFUN ("read-buffer", Fread_buffer, Sread_buffer, 1, 3, 0, + "One arg PROMPT, a string. Read the name of a buffer and return as a string.\n\ +Prompts with PROMPT.\n\ +Optional second arg is value to return if user enters an empty line.\n\ +If optional third arg REQUIRE-MATCH is non-nil, only existing buffer names are allowed.") + (prompt, def, require_match) + Lisp_Object prompt, def, require_match; +{ + Lisp_Object tem; + Lisp_Object args[3]; + struct gcpro gcpro1; + + if (XTYPE (def) == Lisp_Buffer) + def = XBUFFER (def)->name; + if (!NULL (def)) + { + args[0] = build_string ("%s(default %s) "); + args[1] = prompt; + args[2] = def; + prompt = Fformat (3, args); + } + GCPRO1 (def); + tem = Fcompleting_read (prompt, Vbuffer_alist, Qnil, require_match, Qnil); + UNGCPRO; + if (XSTRING (tem)->size) + return tem; + return def; +} + +DEFUN ("try-completion", Ftry_completion, Stry_completion, 2, 3, 0, + "Return common substring of all completions of STRING in ALIST.\n\ +Each car of each element of ALIST is tested to see if it begins with STRING.\n\ +All that match are compared together; the longest initial sequence\n\ +common to all matches is returned as a string.\n\ +If there is no match at all, nil is returned.\n\ +For an exact match, t is returned.\n\ +\n\ +ALIST can be an obarray instead of an alist.\n\ +Then the print names of all symbols in the obarray are the possible matches.\n\ +\n\ +If optional third argument PREDICATE is non-nil,\n\ +it is used to test each possible match.\n\ +The match is a candidate only if PREDICATE returns non-nil.\n\ +The argument given to PREDICATE is the alist element or the symbol from the obarray.") + (string, alist, pred) + Lisp_Object string, alist, pred; +{ + Lisp_Object bestmatch, tail, elt, eltstring; + int bestmatchsize; + int compare, matchsize; + int list = CONSP (alist) || NULL (alist); + int index, obsize; + int matchcount = 0; + Lisp_Object bucket, zero, end, tem; + struct gcpro gcpro1, gcpro2, gcpro3; + + CHECK_STRING (string, 0); + if (!list && XTYPE (alist) != Lisp_Vector) + return call3 (alist, string, pred, Qnil); + + bestmatch = Qnil; + + if (list) + tail = alist; + else + { + index = 0; + obsize = XVECTOR (alist)->size; + bucket = XVECTOR (alist)->contents[index]; + } + + while (1) + { + /* Get the next element of the alist or obarray. */ + /* Exit the loop if the elements are all used up. */ + /* elt gets the alist element or symbol. + eltstring gets the name to check as a completion. */ + + if (list) + { + if (NULL (tail)) + break; + elt = Fcar (tail); + eltstring = Fcar (elt); + tail = Fcdr (tail); + } + else + { + if (XFASTINT (bucket) != 0) + { + elt = bucket; + eltstring = Fsymbol_name (elt); + if (XSYMBOL (bucket)->next) + XSETSYMBOL (bucket, XSYMBOL (bucket)->next); + else + XFASTINT (bucket) = 0; + } + else if (++index >= obsize) + break; + else + { + bucket = XVECTOR (alist)->contents[index]; + continue; + } + } + + /* Is this element a possible completion? */ + + if (XTYPE (eltstring) == Lisp_String && + XSTRING (string)->size <= XSTRING (eltstring)->size && + 0 > scmp (XSTRING (eltstring)->data, XSTRING (string)->data, + XSTRING (string)->size)) + { + /* Yes. */ + /* Ignore this element if there is a predicate + and the predicate doesn't like it. */ + + if (!NULL (pred)) + { + if (EQ (pred, Qcommandp)) + tem = Fcommandp (elt); + else + { + GCPRO3 (string, eltstring, bestmatch); + tem = call1 (pred, elt); + UNGCPRO; + } + if (NULL (tem)) continue; + } + + /* Update computation of how much all possible completions match */ + + matchcount++; + if (NULL (bestmatch)) + bestmatch = eltstring, bestmatchsize = XSTRING (eltstring)->size; + else + { + compare = min (bestmatchsize, XSTRING (eltstring)->size); + matchsize = scmp (XSTRING (bestmatch)->data, + XSTRING (eltstring)->data, + compare); + if (matchsize < 0) + matchsize = compare; + if (completion_ignore_case) + { + /* If this is an exact match except for case, + use it as the best match rather than one that is not an + exact match. This way, we get the case pattern + of the actual match. */ + if ((matchsize == XSTRING (eltstring)->size + && matchsize < XSTRING (bestmatch)->size) + || + /* If there is no exact match ignoring case, + prefer a match that does not change the case + of the input. */ + (((matchsize == XSTRING (eltstring)->size) + == + (matchsize == XSTRING (bestmatch)->size)) + /* If there is more than one exact match ignoring case, + and one of them is exact including case, + prefer that one. */ + && !bcmp (XSTRING (eltstring)->data, + XSTRING (string)->data, + XSTRING (string)->size) + && bcmp (XSTRING (bestmatch)->data, + XSTRING (string)->data, + XSTRING (string)->size))) + bestmatch = eltstring; + } + bestmatchsize = matchsize; + } + } + } + + if (NULL (bestmatch)) + return Qnil; /* No completions found */ + /* If we are ignoring case, and there is no exact match, + and no additional text was supplied, + don't change the case of what the user typed. */ + if (completion_ignore_case && bestmatchsize == XSTRING (string)->size + && XSTRING (bestmatch)->size > bestmatchsize) + return string; + + /* Return t if the supplied string is an exact match (counting case); + it does not require any change to be made. */ + if (matchcount == 1 && bestmatchsize == XSTRING (string)->size + && !bcmp (XSTRING (bestmatch)->data, XSTRING (string)->data, + bestmatchsize)) + return Qt; + + XFASTINT (zero) = 0; /* Else extract the part in which */ + XFASTINT (end) = bestmatchsize; /* all completions agree */ + return Fsubstring (bestmatch, zero, end); +} + +/* Compare exactly LEN chars of strings at S1 and S2, + ignoring case if appropriate. + Return -1 if strings match, + else number of chars that match at the beginning. */ + +scmp (s1, s2, len) + register char *s1, *s2; + int len; +{ + register int l = len; + + if (completion_ignore_case) + { + while (l && downcase_table[*s1++] == downcase_table[*s2++]) + l--; + } + else + { + while (l && *s1++ == *s2++) + l--; + } + if (l == 0) + return -1; + else return len - l; +} + +DEFUN ("all-completions", Fall_completions, Sall_completions, 2, 3, 0, + "Search for partial matches to STRING in ALIST.\n\ +Each car of each element of ALIST is tested to see if it begins with STRING.\n\ +The value is a list of all the strings from ALIST that match.\n\ +ALIST can be an obarray instead of an alist.\n\ +Then the print names of all symbols in the obarray are the possible matches.\n\ +\n\ +If optional third argument PREDICATE is non-nil,\n\ +it is used to test each possible match.\n\ +The match is a candidate only if PREDICATE returns non-nil.\n\ +The argument given to PREDICATE is the alist element or the symbol from the obarray.") + (string, alist, pred) + Lisp_Object string, alist, pred; +{ + Lisp_Object tail, elt, eltstring; + Lisp_Object allmatches; + int list = CONSP (alist) || NULL (alist); + int index, obsize; + Lisp_Object bucket, tem; + struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; + + CHECK_STRING (string, 0); + if (!list && XTYPE (alist) != Lisp_Vector) + { + return call3 (alist, string, pred, Qt); + } + allmatches = Qnil; + + /* If ALIST is not a list, set TAIL just for gc pro. */ + tail = alist; + if (! list) + { + index = 0; + obsize = XVECTOR (alist)->size; + bucket = XVECTOR (alist)->contents[index]; + } + + while (1) + { + /* Get the next element of the alist or obarray. */ + /* Exit the loop if the elements are all used up. */ + /* elt gets the alist element or symbol. + eltstring gets the name to check as a completion. */ + + if (list) + { + if (NULL (tail)) + break; + elt = Fcar (tail); + eltstring = Fcar (elt); + tail = Fcdr (tail); + } + else + { + if (XFASTINT (bucket) != 0) + { + elt = bucket; + eltstring = Fsymbol_name (elt); + if (XSYMBOL (bucket)->next) + XSETSYMBOL (bucket, XSYMBOL (bucket)->next); + else + XFASTINT (bucket) = 0; + } + else if (++index >= obsize) + break; + else + { + bucket = XVECTOR (alist)->contents[index]; + continue; + } + } + + /* Is this element a possible completion? */ + + if (XTYPE (eltstring) == Lisp_String && + XSTRING (string)->size <= XSTRING (eltstring)->size && + XSTRING (eltstring)->data[0] != ' ' && + 0 > scmp (XSTRING (eltstring)->data, XSTRING (string)->data, + XSTRING (string)->size)) + { + /* Yes. */ + /* Ignore this element if there is a predicate + and the predicate doesn't like it. */ + + if (!NULL (pred)) + { + if (EQ (pred, Qcommandp)) + tem = Fcommandp (elt); + else + { + GCPRO4 (tail, eltstring, allmatches, string); + tem = call1 (pred, elt); + UNGCPRO; + } + if (NULL (tem)) continue; + } + /* Ok => put it on the list. */ + allmatches = Fcons (eltstring, allmatches); + } + } + + return Fnreverse (allmatches); +} + +Lisp_Object Vminibuffer_completion_table, Qminibuffer_completion_table; +Lisp_Object Vminibuffer_completion_predicate, Qminibuffer_completion_predicate; +Lisp_Object Vminibuffer_completion_confirm, Qminibuffer_completion_confirm; + +DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 5, 0, + "Read a string in the minibuffer, with completion.\n\ +Args are PROMPT, TABLE, PREDICATE, REQUIRE-MATCH and INITIAL-INPUT.\n\ +PROMPT is a string to prompt with; normally it ends in a colon and a space.\n\ +TABLE is an alist whose elements' cars are strings, or an obarray (see try-completion).\n\ +PREDICATE limits completion to a subset of TABLE; see try-completion for details.\n\ +If REQUIRE-MATCH is non-nil, the user is not allowed to exit unless\n\ + the input is (or completes to) an element of TABLE.\n\ + If it is also not t, Return does not exit if it does non-null completion.\n\ +If INITIAL-INPUT is non-nil, insert it in the minibuffer initially.\n\ +Case is ignored if ambient value of completion-ignore-case is non-nil.") + (prompt, table, pred, require_match, init) + Lisp_Object prompt, table, pred, require_match, init; +{ + Lisp_Object val; + int count = specpdl_ptr - specpdl; + specbind (Qminibuffer_completion_table, table); + specbind (Qminibuffer_completion_predicate, pred); + specbind (Qminibuffer_completion_confirm, + EQ (require_match, Qt) ? Qnil : Qt); + val = read_minibuf (NULL (require_match) + ? Vminibuffer_local_completion_map + : Vminibuffer_local_must_match_map, + init, prompt, 0); + unbind_to (count); + return val; +} + +temp_echo_area_contents (m) + char *m; +{ + int osize = ZV; + Lisp_Object oinhibit; + oinhibit = Vinhibit_quit; + + SET_PT (osize); + InsStr (m); + SET_PT (osize); + Vinhibit_quit = Qt; + Fsit_for (make_number (2), Qnil); + del_range (point, ZV); + if (!NULL (Vquit_flag)) + { + Vquit_flag = Qnil; + unread_command_char = quit_char; + } + Vinhibit_quit = oinhibit; +} + +Lisp_Object Fminibuffer_completion_help (); +Lisp_Object assoc_for_completion (); + +/* returns: + * 0 no possible completion + * 1 was already an exact and unique completion + * 3 was already an exact completion + * 4 completed to an exact completion + * 5 some completion happened + * 6 no completion happened + */ +int +do_completion () +{ + Lisp_Object completion, tem; + int completedp; + + completion = Ftry_completion (Fbuffer_string (), Vminibuffer_completion_table, + Vminibuffer_completion_predicate); + if (NULL (completion)) + { + bell (); + /* Clearing this prevents sit-for from leaving the message up. */ + prev_echo_area_contents = 0; + temp_echo_area_contents (" [No match]"); + return 0; + } + + if (EQ (completion, Qt)) /* exact and unique match */ + return 1; + + /* compiler bug */ + tem = Fstring_equal (completion, Fbuffer_string()); + if (completedp = NULL (tem)) + { + Ferase_buffer (); /* Some completion happened */ + Finsert (1, &completion); + } + + /* It did find a match. Do we match some possibility exactly now? */ + if (CONSP (Vminibuffer_completion_table) + || NULL (Vminibuffer_completion_table)) + tem = assoc_for_completion (Fbuffer_string (), Vminibuffer_completion_table); + else if (XTYPE (Vminibuffer_completion_table) == Lisp_Vector) + { + /* the primitive used by Fintern_soft */ + extern Lisp_Object oblookup (); + + tem = Fbuffer_string (); + /* Bypass intern-soft as that loses for nil */ + tem = oblookup (Vminibuffer_completion_table, + XSTRING (tem)->data, XSTRING (tem)->size); + if (XTYPE (tem) != Lisp_Symbol) + tem = Qnil; + else if (!NULL (Vminibuffer_completion_predicate)) + tem = call1 (Vminibuffer_completion_predicate, tem); + else + tem = Qt; + } + else + tem = call3 (Vminibuffer_completion_table, + Fbuffer_string (), + Vminibuffer_completion_predicate, + Qlambda); + + if (NULL (tem)) + { /* not an exact match */ + if (completedp) + return 5; + else if (completion_auto_help) + Fminibuffer_completion_help (); + else + temp_echo_area_contents (" [Next char not unique]"); + return 6; + } + else + return (completedp ? 4 : 3); +} + +/* Like assoc but assumes KEY is a string, and ignores case if appropriate. */ + +Lisp_Object +assoc_for_completion (key, list) + register Lisp_Object key; + Lisp_Object list; +{ + register Lisp_Object tail; + + if (completion_ignore_case) + key = Fupcase (key); + + for (tail = list; !NULL (tail); tail = Fcdr (tail)) + { + register Lisp_Object elt, tem, thiscar; + elt = Fcar (tail); + if (!CONSP (elt)) continue; + thiscar = Fcar (elt); + if (XTYPE (thiscar) != Lisp_String) + continue; + if (completion_ignore_case) + thiscar = Fupcase (thiscar); + tem = Fequal (thiscar, key); + if (!NULL (tem)) return elt; + QUIT; + } + return Qnil; +} + +DEFUN ("minibuffer-complete", Fminibuffer_complete, Sminibuffer_complete, 0, 0, "", + "Complete the minibuffer contents as far as possible.") + () +{ + register int i = do_completion (); + switch (i) + { + case 0: + return Qnil; + + case 1: + temp_echo_area_contents(" [Sole completion]"); + break; + + case 3: + temp_echo_area_contents(" [Complete, but not unique]"); + break; + } + return Qt; +} + +DEFUN ("minibuffer-complete-and-exit", Fminibuffer_complete_and_exit, + Sminibuffer_complete_and_exit, 0, 0, "", + "Complete the minibuffer contents, and maybe exit.\n\ +Exit if the name is valid with no completion needed.\n\ +If name was completed to a valid match,\n\ +a repetition of this command will exit.") + () +{ + register int i; + + /* Allow user to specify null string */ + if (BEGV == ZV) + goto exit; + + i = do_completion (); + switch (i) + { + case 1: + case 3: + goto exit; + + case 4: + if (!NULL (Vminibuffer_completion_confirm)) + { + temp_echo_area_contents(" [Confirm]"); + return Qnil; + } + else + goto exit; + + default: + return Qnil; + } + exit: + Fthrow (Qexit, Qnil); + /* NOTREACHED */ +} + +DEFUN ("minibuffer-complete-word", Fminibuffer_complete_word, Sminibuffer_complete_word, + 0, 0, "", + "Complete the minibuffer contents at most a single word.") + () +{ + Lisp_Object completion, tem; + register int i; + register unsigned char *completion_string; + /* We keep calling Fbuffer_string + rather than arrange for GC to hold onto a pointer to + one of the strings thus made. */ + + completion = Ftry_completion (Fbuffer_string (), + Vminibuffer_completion_table, + Vminibuffer_completion_predicate); + if (NULL (completion)) + { + bell (); + temp_echo_area_contents (" [No match]"); + return Qnil; + } + if (EQ (completion, Qt)) + return Qnil; + +#if 0 /* How the below code used to look, for reference */ + tem = Fbuffer_string (); + b = XSTRING (tem)->data; + i = ZV - 1 - XSTRING (completion)->size; + p = XSTRING (completion)->data; + if (i > 0 || + 0 <= scmp (b, p, ZV - 1)) + { + i = 1; + /* Set buffer to longest match of buffer tail and completion head. */ + while (0 <= scmp (b + i, p, ZV - 1 - i)) + i++; + del_range (1, i + 1); + SET_PT (ZV); + } +#else /* Rewritten code */ + { + register unsigned char *buffer_string; + int buffer_length, completion_length; + + tem = Fbuffer_string (); + buffer_string = XSTRING (tem)->data; + completion_string = XSTRING (completion)->data; + buffer_length = XSTRING (tem)->size; /* ie ZV - BEGV */ + completion_length = XSTRING (completion)->size; + i = buffer_length - completion_length; + /* Mly: I don't understand what this is supposed to do AT ALL */ + if (i > 0 || + 0 <= scmp (buffer_string, completion_string, buffer_length)) + { + /* Set buffer to longest match of buffer tail and completion head. */ + if (i <= 0) i = 1; + buffer_string += i; + buffer_length -= i; + while (0 <= scmp (buffer_string++, completion_string, buffer_length--)) + i++; + del_range (1, i + 1); + SET_PT (ZV); + } + } +#endif /* Rewritten code */ + i = ZV - BEGV; + + /* If completion finds next char not unique, + consider adding a space or a hyphen */ + if (i == XSTRING (completion)->size) + { + tem = Ftry_completion (concat2 (Fbuffer_string (), build_string (" ")), + Vminibuffer_completion_table, + Vminibuffer_completion_predicate); + if (XTYPE (tem) == Lisp_String) + completion = tem; + else + { + tem = Ftry_completion (concat2 (Fbuffer_string (), build_string ("-")), + Vminibuffer_completion_table, + Vminibuffer_completion_predicate); + if (XTYPE (tem) == Lisp_String) + completion = tem; + } + } + + /* Now find first word-break in the stuff found by completion. + i gets index in string of where to stop completing. */ + completion_string = XSTRING (completion)->data; + + for (; i < XSTRING (completion)->size; i++) + if (SYNTAX (completion_string[i]) != Sword) break; + if (i < XSTRING (completion)->size) + i = i + 1; + + /* If got no characters, print help for user. */ + + if (i == ZV - BEGV) + { + if (completion_auto_help) + Fminibuffer_completion_help (); + return Qnil; + } + + /* Otherwise insert in minibuffer the chars we got */ + + Ferase_buffer (); + insert (completion_string, i); + return Qt; +} + +DEFUN ("display-completion-list", Fdisplay_completion_list, Sdisplay_completion_list, + 1, 1, 0, + "Display in a buffer the list of completions, COMPLETIONS.\n\ +Each element may be just a symbol or string\n\ +or may be a list of two strings to be printed as if concatenated.") + (completions) + Lisp_Object completions; +{ + register Lisp_Object tail, elt; + register int i; + struct buffer *old = current_buffer; + /* No GCPRO needed, since (when it matters) every variable + points to a non-string that is pointed to by COMPLETIONS. */ + + set_buffer_internal (XBUFFER (Vstandard_output)); + + if (NULL (completions)) + InsStr ("There are no possible completions of what you have typed."); + else + { + InsStr ("Possible completions are:"); + for (tail = completions, i = 0; !NULL (tail); tail = Fcdr (tail), i++) + { + /* this needs fixing for the case of long completions + and/or narrow windows */ + /* Sadly, the window it will appear in is not known + until after the text has been made. */ + if (i & 1) + Findent_to (make_number (35), make_number (1)); + else + Fterpri (Qnil); + elt = Fcar (tail); + if (CONSP (elt)) + { + Fprinc (Fcar (elt), Qnil); + Fprinc (Fcar (Fcdr (elt)), Qnil); + } + else + Fprinc (elt, Qnil); + } + } + set_buffer_internal (old); + return Qnil; +} + +DEFUN ("minibuffer-completion-help", Fminibuffer_completion_help, Sminibuffer_completion_help, + 0, 0, "", + "Display a list of possible completions of the current minibuffer contents.") + () +{ + Lisp_Object completions; + message ("Making completion list..."); + completions = Fall_completions (Fbuffer_string (), Vminibuffer_completion_table, + Vminibuffer_completion_predicate); + echo_area_contents = 0; + if (NULL (completions)) + { + bell (); + temp_echo_area_contents (" [No completions]"); + } + else + internal_with_output_to_temp_buffer (" *Completions*", + Fdisplay_completion_list, + Fsort (completions, Qstring_lessp)); + return Qnil; +} + +DEFUN ("self-insert-and-exit", Fself_insert_and_exit, Sself_insert_and_exit, 0, 0, "", + "Terminate minibuffer input.") + () +{ + self_insert_internal (last_command_char, 0); + Fthrow (Qexit, Qnil); +} + +DEFUN ("exit-minibuffer", Fexit_minibuffer, Sexit_minibuffer, 0, 0, "", + "Terminate this minibuffer argument.") + () +{ + Fthrow (Qexit, Qnil); +} + +DEFUN ("minibuffer-depth", Fminibuffer_depth, Sminibuffer_depth, 0, 0, 0, + "Return current depth of activations of minibuffer, a nonnegative integer.") + () +{ + return make_number (minibuf_level); +} + + +init_minibuf_once () +{ + Vminibuffer_list = Qnil; + staticpro (&Vminibuffer_list); +} + +syms_of_minibuf () +{ + minibuf_level = 0; + minibuf_prompt = 0; + minibuf_save_vector_size = 5; + minibuf_save_vector = (struct minibuf_save_data *) malloc (5 * sizeof (struct minibuf_save_data)); + + Qminibuffer_completion_table = intern ("minibuffer-completion-table"); + staticpro (&Qminibuffer_completion_table); + + Qminibuffer_completion_confirm = intern ("minibuffer-completion-confirm"); + staticpro (&Qminibuffer_completion_confirm); + + Qminibuffer_completion_predicate = intern ("minibuffer-completion-predicate"); + staticpro (&Qminibuffer_completion_predicate); + + staticpro (&last_minibuf_string); + last_minibuf_string = Qnil; + + Quser_variable_p = intern ("user-variable-p"); + staticpro (&Quser_variable_p); + + + + DEFVAR_BOOL ("completion-auto-help", &completion_auto_help, + "*Non-nil means automatically provide help for invalid completion input."); + completion_auto_help = 1; + + DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case, + "Non-nil means don't consider case significant in completion."); + completion_ignore_case = 0; + + DEFVAR_BOOL ("enable-recursive-minibuffers", &enable_recursive_minibuffers, + "*Non-nil means to allow minibuffers to invoke commands which use\n\ +recursive minibuffers."); + enable_recursive_minibuffers = 0; + + DEFVAR_LISP ("minibuffer-completion-table", &Vminibuffer_completion_table, + "Alist or obarray used for completion in the minibuffer."); + Vminibuffer_completion_table = Qnil; + + DEFVAR_LISP ("minibuffer-completion-predicate", &Vminibuffer_completion_predicate, + "Holds PREDICATE argument to completing-read."); + Vminibuffer_completion_predicate = Qnil; + + DEFVAR_LISP ("minibuffer-completion-confirm", &Vminibuffer_completion_confirm, + "Non-nil => demand confirmation of completion before exiting minibuffer."); + Vminibuffer_completion_confirm = Qnil; + + DEFVAR_LISP ("minibuffer-help-form", &Vminibuffer_help_form, + "Value that help-form takes on inside the minibuffer."); + Vminibuffer_help_form = Qnil; + + defsubr (&Sread_from_minibuffer); + defsubr (&Seval_minibuffer); + defsubr (&Sread_minibuffer); + defsubr (&Sread_string); + defsubr (&Sread_command); + defsubr (&Sread_variable); + defsubr (&Sread_buffer); + defsubr (&Sread_no_blanks_input); + defsubr (&Sminibuffer_depth); + + defsubr (&Stry_completion); + defsubr (&Sall_completions); + defsubr (&Scompleting_read); + defsubr (&Sminibuffer_complete); + defsubr (&Sminibuffer_complete_word); + defsubr (&Sminibuffer_complete_and_exit); + defsubr (&Sdisplay_completion_list); + defsubr (&Sminibuffer_completion_help); + + defsubr (&Sself_insert_and_exit); + defsubr (&Sexit_minibuffer); + +} + +keys_of_minibuf () +{ + ndefkey (Vminibuffer_local_map, Ctl ('g'), "abort-recursive-edit"); + ndefkey (Vminibuffer_local_map, Ctl ('m'), "exit-minibuffer"); + ndefkey (Vminibuffer_local_map, Ctl ('j'), "exit-minibuffer"); + + ndefkey (Vminibuffer_local_ns_map, Ctl ('g'), "abort-recursive-edit"); + ndefkey (Vminibuffer_local_ns_map, Ctl ('m'), "exit-minibuffer"); + ndefkey (Vminibuffer_local_ns_map, Ctl ('j'), "exit-minibuffer"); + + ndefkey (Vminibuffer_local_ns_map, ' ', "exit-minibuffer"); + ndefkey (Vminibuffer_local_ns_map, '\t', "exit-minibuffer"); + ndefkey (Vminibuffer_local_ns_map, '?', "self-insert-and-exit"); + + ndefkey (Vminibuffer_local_completion_map, Ctl ('g'), "abort-recursive-edit"); + ndefkey (Vminibuffer_local_completion_map, Ctl ('m'), "exit-minibuffer"); + ndefkey (Vminibuffer_local_completion_map, Ctl ('j'), "exit-minibuffer"); + ndefkey (Vminibuffer_local_completion_map, '\t', "minibuffer-complete"); + ndefkey (Vminibuffer_local_completion_map, ' ', "minibuffer-complete-word"); + ndefkey (Vminibuffer_local_completion_map, '?', "minibuffer-completion-help"); + + ndefkey (Vminibuffer_local_must_match_map, Ctl ('g'), "abort-recursive-edit"); + ndefkey (Vminibuffer_local_must_match_map, Ctl ('m'), "minibuffer-complete-and-exit"); + ndefkey (Vminibuffer_local_must_match_map, Ctl ('j'), "minibuffer-complete-and-exit"); + ndefkey (Vminibuffer_local_must_match_map, '\t', "minibuffer-complete"); + ndefkey (Vminibuffer_local_must_match_map, ' ', "minibuffer-complete-word"); + ndefkey (Vminibuffer_local_must_match_map, '?', "minibuffer-completion-help"); +} |