Mercurial > hg > xemacs-beta
view src/win32.c @ 5353:38e24b8be4ea
Improve the lexical scoping in #'block, #'return-from.
lisp/ChangeLog addition:
2011-02-07 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el:
* bytecomp.el (byte-compile-initial-macro-environment):
Shadow `block', `return-from' here, we implement them differently
when byte-compiling.
* bytecomp.el (byte-compile-active-blocks): New.
* bytecomp.el (byte-compile-block-1): New.
* bytecomp.el (byte-compile-return-from-1): New.
* bytecomp.el (return-from-1): New.
* bytecomp.el (block-1): New.
These are two aliases that exist to have their own associated
byte-compile functions, which functions implement `block' and
`return-from'.
* cl-extra.el (cl-macroexpand-all):
Fix a bug here when macros in the environment have been compiled.
* cl-macs.el (block):
* cl-macs.el (return):
* cl-macs.el (return-from):
Be more careful about lexical scope in these macros.
* cl.el:
* cl.el ('cl-block-wrapper): Removed.
* cl.el ('cl-block-throw): Removed.
These aren't needed in code generated by this XEmacs. They
shouldn't be needed in code generated by XEmacs 21.4, but if it
turns out the packages do need them, we can put them back.
2011-01-30 Mike Sperber <mike@xemacs.org>
* font-lock.el (font-lock-fontify-pending-extents): Don't fail if
`font-lock-mode' is unset, which can happen in the middle of
`revert-buffer'.
2011-01-23 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (delete):
* cl-macs.el (delq):
* cl-macs.el (remove):
* cl-macs.el (remq):
Don't use the compiler macro if these functions were given the
wrong number of arguments, as happens in lisp-tests.el.
* cl-seq.el (remove, remq): Removed.
I added these to subr.el, and forgot to remove them from here.
2011-01-22 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-setq, byte-compile-set):
Remove kludge allowing keywords' values to be set, all the code
that does that is gone.
* cl-compat.el (elt-satisfies-test-p):
* faces.el (set-face-parent):
* faces.el (face-doc-string):
* gtk-font-menu.el:
* gtk-font-menu.el (gtk-reset-device-font-menus):
* msw-font-menu.el:
* msw-font-menu.el (mswindows-reset-device-font-menus):
* package-get.el (package-get-installedp):
* select.el (select-convert-from-image-data):
* sound.el:
* sound.el (load-sound-file):
* x-font-menu.el (x-reset-device-font-menus-core):
Don't quote keywords, they're self-quoting, and the
win from backward-compatibility is sufficiently small now that the
style problem overrides it.
2011-01-22 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (block, return-from): Require that NAME be a symbol
in these macros, as always documented in the #'block docstring and
as required by Common Lisp.
* descr-text.el (unidata-initialize-unihan-database):
Correct the use of non-symbols in #'block and #'return-from in
this function.
2011-01-15 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (concatenate): Accept more complicated TYPEs in this
function, handing the sequences over to #'coerce if we don't
understand them here.
* cl-macs.el (inline): Don't proclaim #'concatenate as inline, its
compiler macro is more useful than doing that.
2011-01-11 Aidan Kehoe <kehoea@parhasard.net>
* subr.el (delete, delq, remove, remq): Move #'remove, #'remq
here, they don't belong in cl-seq.el; move #'delete, #'delq here
from fns.c, implement them in terms of #'delete*, allowing support
for sequences generally.
* update-elc.el (do-autoload-commands): Use #'delete*, not #'delq
here, now the latter's no longer dumped.
* cl-macs.el (delete, delq): Add compiler macros transforming
#'delete and #'delq to #'delete* calls.
2011-01-10 Aidan Kehoe <kehoea@parhasard.net>
* dialog.el (make-dialog-box): Correct a misplaced parenthesis
here, thank you Mats Lidell in 87zkr9gqrh.fsf@mail.contactor.se !
2011-01-02 Aidan Kehoe <kehoea@parhasard.net>
* dialog.el (make-dialog-box):
* list-mode.el (display-completion-list):
These functions used to use cl-parsing-keywords; change them to
use defun* instead, fixing the build. (Not sure what led to me
not including this change in d1b17a33450b!)
2011-01-02 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (define-star-compiler-macros):
Make sure the form has ITEM and LIST specified before attempting
to change to calls with explicit tests; necessary for some tests
in lisp-tests.el to compile correctly.
(stable-union, stable-intersection): Add compiler macros for these
functions, in the same way we do for most of the other functions
in cl-seq.el.
2011-01-01 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (dolist, dotimes, do-symbols, macrolet)
(symbol-macrolet):
Define these macros with defmacro* instead of parsing the argument
list by hand, for the sake of style and readability; use backquote
where appropriate, instead of calling #'list and and friends, for
the same reason.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* x-misc.el (device-x-display):
Provide this function, documented in the Lispref for years, but
not existing previously. Thank you Julian Bradfield, thank you
Jeff Mincy.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* cl-seq.el:
Move the heavy lifting from this file to C. Dump the
cl-parsing-keywords macro, but don't use defun* for the functions
we define that do take keywords, dynamic scope lossage makes that
not practical.
* subr.el (sort, fillarray): Move these aliases here.
(map-plist): #'nsublis is now built-in, but at this point #'eql
isn't necessarily available as a test; use #'eq.
* obsolete.el (cl-delete-duplicates): Make this available for old
compiler macros and old code.
(memql): Document that this is equivalent to #'member*, and worse.
* cl.el (adjoin, subst): Removed. These are in C.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* simple.el (assoc-ignore-case): Remove a duplicate definition of
this function (it's already in subr.el).
* iso8859-1.el (char-width):
On non-Mule, make this function equivalent to that produced by
(constantly 1), but preserve its docstring.
* subr.el (subst-char-in-string): Define this in terms of
#'substitute, #'nsubstitute.
(string-width): Define this using #'reduce and #'char-width.
(char-width): Give this a simpler definition, it makes far more
sense to check for mule at load time and redefine, as we do in
iso8859-1.el.
(store-substring): Implement this in terms of #'replace, now
#'replace is cheap.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* update-elc.el (lisp-files-needed-for-byte-compilation)
(lisp-files-needing-early-byte-compilation):
cl-macs belongs in the former, not the latter, it is as
fundamental as bytecomp.el.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* cl.el:
Provde the Common Lisp program-error, type-error as error
symbols. This doesn't nearly go far enough for anyone using the
Common Lisp errors.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (delete-duplicates):
If the form has an incorrect number of arguments, don't attempt a
compiler macroexpansion.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (cl-safe-expr-p):
Forms that start with the symbol lambda are also safe.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (= < > <= >=):
For these functions' compiler macros, the optimisation is safe
even if the first and the last arguments have side effects, since
they're only used the once.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (inline-side-effect-free-compiler-macros):
Unroll a loop here at macro-expansion time, so these compiler
macros are compiled. Use #'eql instead of #'eq in a couple of
places for better style.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (notany, notevery): Avoid some dynamic scope
stupidity with local variable names in these functions, when they
weren't prefixed with cl-; go into some more detail in the doc
strings.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (side-effect-free-fns): #'remove, #'remq are
free of side-effects.
(side-effect-and-error-free-fns):
Drop dot, dot-marker from the list.
2010-11-17 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (coerce):
In the argument list, name the first argument OBJECT, not X; the
former name was always used in the doc string and is clearer.
Handle vector type specifications which include the length of the
target sequence, error if there's a mismatch.
* cl-macs.el (cl-make-type-test): Handle type specifications
starting with the symbol 'eql.
2010-11-14 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (eql): Don't remove the byte-compile property of this
symbol. That was necessary to override a bug in bytecomp.el where
#'eql was confused with #'eq, which bug we no longer have.
If neither expression is constant, don't attempt to handle the
expression in this compiler macro, leave it to byte-compile-eql,
which produces better code anyway.
* bytecomp.el (eq): #'eql is not the function associated with the
byte-eq byte code.
(byte-compile-eql): Add an explicit compile method for this
function, for cases where the cl-macs compiler macro hasn't
reduced it to #'eq or #'equal.
2010-10-25 Aidan Kehoe <kehoea@parhasard.net>
Add compiler macros and compilation sanity-checking for various
functions that take keywords.
* byte-optimize.el (side-effect-free-fns): #'symbol-value is
side-effect free and not error free.
* bytecomp.el (byte-compile-normal-call): Check keyword argument
lists for sanity; store information about the positions where
keyword arguments start using the new byte-compile-keyword-start
property.
* cl-macs.el (cl-const-expr-val): Take a new optional argument,
cl-not-constant, defaulting to nil, in this function; return it if
the expression is not constant.
(cl-non-fixnum-number-p): Make this into a separate function, we
want to pass it to #'every.
(eql): Use it.
(define-star-compiler-macros): Use the same code to generate the
member*, assoc* and rassoc* compiler macros; special-case some
code in #'add-to-list in subr.el.
(remove, remq): Add compiler macros for these two functions, in
preparation for #'remove being in C.
(define-foo-if-compiler-macros): Transform (remove-if-not ...) calls to
(remove ... :if-not) at compile time, which will be a real win
once the latter is in C.
(define-substitute-if-compiler-macros)
(define-subst-if-compiler-macros): Similarly for these functions.
(delete-duplicates): Change this compiler macro to use
#'plists-equal; if we don't have information about the type of
SEQUENCE at compile time, don't bother attempting to inline the
call, the function will be in C soon enough.
(equalp): Remove an old commented-out compiler macro for this, if
we want to see it it's in version control.
(subst-char-in-string): Transform this to a call to nsubstitute or
nsubstitute, if that is appropriate.
* cl.el (ldiff): Don't call setf here, this makes for a load-time
dependency problem in cl-macs.el
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* term/vt100.el:
Refer to XEmacs, not GNU Emacs, in permissions.
* term/bg-mouse.el:
* term/sup-mouse.el:
Put copyright notice in canonical "Copyright DATE AUTHOR" form.
Refer to XEmacs, not GNU Emacs, in permissions.
* site-load.el:
Add permission boilerplate.
* mule/canna-leim.el:
* alist.el:
Refer to XEmacs, not APEL/this program, in permissions.
* mule/canna-leim.el:
Remove my copyright, I've assigned it to the FSF.
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* gtk.el:
* gtk-widget-accessors.el:
* gtk-package.el:
* gtk-marshal.el:
* gtk-compose.el:
* gnome.el:
Add copyright notice based on internal evidence.
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* easymenu.el: Add reference to COPYING to permission notice.
* gutter.el:
* gutter-items.el:
* menubar-items.el:
Fix typo "Xmacs" in permissions notice.
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* auto-save.el:
* font.el:
* fontconfig.el:
* mule/kinsoku.el:
Add "part of XEmacs" text to permission notice.
2010-10-14 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (side-effect-free-fns):
* cl-macs.el (remf, getf):
* cl-extra.el (tailp, cl-set-getf, cl-do-remf):
* cl.el (ldiff, endp):
Tighten up Common Lisp compatibility for #'ldiff, #'endp, #'tailp;
add circularity checking for the first two.
#'cl-set-getf and #'cl-do-remf were Lisp implementations of
#'plist-put and #'plist-remprop; change the names to aliases,
changes the macros that use them to using #'plist-put and
#'plist-remprop directly.
2010-10-12 Aidan Kehoe <kehoea@parhasard.net>
* abbrev.el (fundamental-mode-abbrev-table, global-abbrev-table):
Create both these abbrev tables using the usual
#'define-abbrev-table calls, rather than attempting to
special-case them.
* cl-extra.el: Force cl-macs to be loaded here, if cl-extra.el is
being loaded interpreted. Previously other, later files would
redundantly call (load "cl-macs") when interpreted, it's more
reasonable to do it here, once.
* cmdloop.el (read-quoted-char-radix): Use defcustom here, we
don't have any dump-order dependencies that would prevent that.
* custom.el (eval-when-compile): Don't load cl-macs when
interpreted or when byte-compiling, rely on cl-extra.el in the
former case and the appropriate entry in bytecomp-load-hook in the
latter. Get rid of custom-declare-variable-list, we have no
dump-time dependencies that would require it.
* faces.el (eval-when-compile): Don't load cl-macs when
interpreted or when byte-compiling.
* packages.el: Remove some inaccurate comments.
* post-gc.el (cleanup-simple-finalizers): Use #'delete-if-not
here, now the order of preloaded-file-list has been changed to
make it available.
* subr.el (custom-declare-variable-list): Remove. No need for it.
Also remove a stub define-abbrev-table from this file, given the
current order of preloaded-file-list there's no need for it.
2010-10-10 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-constp) Forms quoted with FUNCTION are
also constant.
(byte-compile-initial-macro-environment): In #'the, if FORM is
constant and does not match TYPE, warn at byte-compile time.
2010-10-10 Aidan Kehoe <kehoea@parhasard.net>
* backquote.el (bq-vector-contents, bq-list*): Remove; the former
is equivalent to (append VECTOR nil), the latter to (list* ...).
(bq-process-2): Use (append VECTOR nil) instead of using
#'bq-vector-contents to convert to a list.
(bq-process-1): Now we use list* instead of bq-list
* subr.el (list*): Moved from cl.el, since it is now required to
be available the first time a backquoted form is encountered.
* cl.el (list*): Move to subr.el.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* test-harness.el (Check-Message):
Add an omitted comma here, thank you the buildbot.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* hash-table.el (hash-table-key-list, hash-table-value-list)
(hash-table-key-value-alist, hash-table-key-value-plist):
Remove some useless #'nreverse calls in these files; our hash
tables have no order, it's not helpful to pretend they do.
* behavior.el (read-behavior):
Do the same in this file, in some code evidently copied from
hash-table.el.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* info.el (Info-insert-dir):
* format.el (format-deannotate-region):
* files.el (cd, save-buffers-kill-emacs):
Use #'some, #'every and related functions for applying boolean
operations to lists, instead of rolling our own ones that cons and
don't short-circuit.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-initial-macro-environment):
* cl-macs.el (the):
Rephrase the docstring, make its implementation when compiling
files a little nicer.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* descr-text.el (unidata-initialize-unicodedata-database)
(unidata-initialize-unihan-database, describe-char-unicode-data)
(describe-char-unicode-data):
Wrap calls to the database functions with (with-fboundp ...),
avoiding byte compile warnings on builds without support for the
database functions.
(describe-char): (reduce #'max ...), not (apply #'max ...), no
need to cons needlessly.
(describe-char): Remove a redundant lambda wrapping
#'extent-properties.
(describe-char-unicode-data): Call #'nsubst when replacing "" with
nil in the result of #'split-string, instead of consing inside
mapcar.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* x-faces.el (x-available-font-sizes):
* specifier.el (let-specifier):
* package-ui.el (pui-add-required-packages):
* msw-faces.el (mswindows-available-font-sizes):
* modeline.el (modeline-minor-mode-menu):
* minibuf.el (minibuf-directory-files):
Replace the O2N (delq nil (mapcar (lambda (W) (and X Y)) Z)) with
the ON (mapcan (lambda (W) (and X (list Y))) Z) in these files.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (= < > <= >=):
When these functions are handed more than two arguments, and those
arguments have no side effects, transform to a series of two
argument calls, avoiding funcall in the byte-compiled code.
* mule/mule-cmds.el (finish-set-language-environment):
Take advantage of this change in a function called 256 times at
startup.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-function-form, byte-compile-quote)
(byte-compile-quote-form):
Warn at compile time, and error at runtime, if a (quote ...) or a
(function ...) form attempts to quote more than one object.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (byte-optimize-apply): Transform (apply 'nconc
(mapcar ...)) to (mapcan ...); warn about use of the first idiom.
* update-elc.el (do-autoload-commands):
* packages.el (packages-find-package-library-path):
* frame.el (frame-list):
* extents.el (extent-descendants):
* etags.el (buffer-tag-table-files):
* dumped-lisp.el (preloaded-file-list):
* device.el (device-list):
* bytecomp-runtime.el (proclaim-inline, proclaim-notinline)
Use #'mapcan, not (apply #'nconc (mapcar ...) in all these files.
* bytecomp-runtime.el (eval-when-compile, eval-and-compile):
In passing, mention that these macros also evaluate the body when
interpreted.
tests/ChangeLog addition:
2011-02-07 Aidan Kehoe <kehoea@parhasard.net>
* automated/lisp-tests.el:
Test lexical scope for `block', `return-from'; add a
Known-Bug-Expect-Failure for a contorted example that fails when
byte-compiled.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Mon, 07 Feb 2011 12:01:24 +0000 |
| parents | 3c3c1d139863 |
| children | 308d34e9f07d |
line wrap: on
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/* Utility routines for XEmacs on Windows 9x, NT and Cygwin. Copyright (C) 2000, 2001, 2002, 2004 Ben Wing. This file is part of XEmacs. XEmacs 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 2, or (at your option) any later version. XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <config.h> #include "lisp.h" #include "buffer.h" #include "console-msw.h" #include "hash.h" #include "profile.h" #include "sysfile.h" #include "sysproc.h" #include "syssignal.h" #include "systime.h" /* Info on Windows issues: (Info-goto-node "(internals)Interface to MS Windows") ------- @file{src/config.h}.in vs. @file{nt/xemacs.mak} ------- See @file{src/config.h.in} more more info. */ /* Control conversion of upper case file names to lower case. nil means no, t means yes. */ Lisp_Object Vmswindows_downcase_file_names; struct hash_table *mswindows_read_link_hash; int mswindows_windows9x_p; Boolint mswindows_shortcuts_are_symlinks; pfSwitchToThread_t xSwitchToThread; pfNetUserEnum_t xNetUserEnum; pfNetApiBufferFree_t xNetApiBufferFree; /* Convert a filename in standard Win32 format into our internal format (which may be significantly different if we're running on Cygwin), and turn it into a file: URL. Return a newly malloc()ed string. #### This comes from code that just prepended `file:', which is not good. See comment in mswindows_dde_callback(), case XTYP_EXECUTE. */ Ibyte * urlify_filename (Ibyte *filename) { Ibyte *pseudo_url; INTERNAL_MSWIN_TO_LOCAL_FILE_FORMAT (filename, filename); pseudo_url = xnew_array (Ibyte, 5 + qxestrlen (filename) + 1); qxestrcpy_ascii (pseudo_url, "file:"); qxestrcat (pseudo_url, filename); /* URL's only have /, no backslash */ for (filename = pseudo_url; *filename; filename++) { if (*filename == '\\') *filename = '/'; } return pseudo_url; } /* Convert a Win32 file name in tstr format into a local-format file name in internal format. */ Lisp_Object tstr_to_local_file_format (Extbyte *path) { Ibyte *pathint = TSTR_TO_ITEXT (path); INTERNAL_MSWIN_TO_LOCAL_FILE_FORMAT (pathint, pathint); return build_istring (pathint); } /* Normalize filename by converting all path separators to the specified separator. Also conditionally convert all-upper-case path name components to lower case. Return a newly malloc()ed string. */ Ibyte * mswindows_canonicalize_filename (Ibyte *name) { Ibyte *fp = name; DECLARE_EISTRING (newname); DECLARE_EISTRING (component); int do_casefrob = 1; /* Always lower-case drive letters a-z, even if the filesystem preserves case in filenames. This is so filenames can be compared by string comparison functions that are case-sensitive. Even case-preserving filesystems do not distinguish case in drive letters. */ if (name[0] >= 'A' && name[0] <= 'Z' && name[1] == ':') { eicat_ch (newname, name[0] + 'a' - 'A'); eicat_ch (newname, ':'); fp += 2; } while (1) { Ichar ch = itext_ichar (fp); if (LOWERCASEP (0, ch)) do_casefrob = 0; /* don't convert this element */ if (ch == 0 || IS_ANY_SEP (ch)) { if (do_casefrob && !NILP (Vmswindows_downcase_file_names)) eilwr (component); do_casefrob = 1; eicat_ei (newname, component); eireset (component); if (IS_DIRECTORY_SEP (ch)) eicat_ch (newname, DIRECTORY_SEP); else if (ch) eicat_ch (newname, ch); else break; } else eicat_ch (component, ch); INC_IBYTEPTR (fp); } return eicpyout_malloc (newname, 0); } Extbyte * mswindows_get_module_file_name (void) { Extbyte *path = NULL; int bufsize = 4096; int cchpathsize; while (1) { path = (Extbyte *) xrealloc (path, bufsize * XETCHAR_SIZE); cchpathsize = qxeGetModuleFileName (NULL, path, bufsize); if (!cchpathsize) return 0; if (cchpathsize + 1 <= bufsize) break; bufsize *= 2; } return path; } static void init_potentially_nonexistent_functions (void) { HMODULE h_kernel = qxeGetModuleHandle (XETEXT ("kernel32")); /* the following does not seem to get mapped in automatically */ HMODULE h_netapi = qxeLoadLibrary (XETEXT ("netapi32.dll")); if (h_kernel) { xSwitchToThread = (pfSwitchToThread_t) GetProcAddress (h_kernel, "SwitchToThread"); } if (h_netapi) { xNetUserEnum = (pfNetUserEnum_t) GetProcAddress (h_netapi, "NetUserEnum"); xNetApiBufferFree = (pfNetApiBufferFree_t) GetProcAddress (h_netapi, "NetApiBufferFree"); } } static Lisp_Object mswindows_lisp_error_1 (int errnum, int no_recurse) { LPTSTR lpMsgBuf; Lisp_Object result; Ibyte *inres; Bytecount len; int i; /* The docs for FormatMessage say: If you pass a specific LANGID in this parameter, FormatMessage will return a message for that LANGID only. If the function cannot find a message for that LANGID, it returns ERROR_RESOURCE_LANG_NOT_FOUND. If you pass in zero, FormatMessage looks for a message for LANGIDs in the following order: Language neutral Thread LANGID, based on the thread's locale value User default LANGID, based on the user's default locale value System default LANGID, based on the system default locale value US English If FormatMessage doesn't find a message for any of the preceding LANGIDs, it returns any language message string that is present. If that fails, it returns ERROR_RESOURCE_LANG_NOT_FOUND. (Note, this is returned through GetLastError(), not the return value.) #### what the hell is "language neutral"? i can find no info on this. so let's do our own language first. */ for (i = 0; ; i++) { int lang = 0; int retval; switch (i) { #ifdef MULE /* Urk! Windows 95 doesn't let you set the thread locale! so we have to maintain our own. */ case 0: lang = LANGIDFROMLCID (mswindows_current_locale ()); break; case 1: lang = 0; break; #else case 0: lang = 0; break; #endif default: ABORT (); } retval = qxeFormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, errnum, lang, /* yeah, i'm casting a char ** to a char *. ya gotta problem widdat? */ (Extbyte *) &lpMsgBuf, 0, NULL); if (!retval) { if (lang != 0) continue; if (no_recurse) return emacs_sprintf_string ("Unknown error code %d (error return %ld from FormatMessage())", errnum, GetLastError ()); else return emacs_sprintf_string ("Unknown error code %d (error return %s from FormatMessage())", /* It's OK, emacs_sprintf_string disables GC explicitly */ errnum, XSTRING_DATA (mswindows_lisp_error_1 (errnum, 1))); } else break; } inres = TSTR_TO_ITEXT (lpMsgBuf); len = qxestrlen (inres); /* Messages tend to end with a period and newline */ if (len >= 3 && !qxestrcmp_ascii (inres + len - 3, ".\r\n")) len -= 3; result = make_string (inres, len); LocalFree (lpMsgBuf); return result; } Lisp_Object mswindows_lisp_error (int errnum) { return mswindows_lisp_error_1 (errnum, 0); } void mswindows_output_last_error (const Ascbyte *frob) { int errval = GetLastError (); Lisp_Object errmess = mswindows_lisp_error (errval); stderr_out ("last error during %s is %d: %s\n", frob, errval, XSTRING_DATA (errmess)); } DOESNT_RETURN mswindows_report_process_error (const Ascbyte *reason, Lisp_Object data, int errnum) { signal_error_2 (Qprocess_error, reason, mswindows_lisp_error (errnum), data); } DEFUN ("mswindows-shell-execute", Fmswindows_shell_execute, 2, 4, 0, /* Get Windows to perform OPERATION on DOCUMENT. This is a wrapper around the ShellExecute system function, which invokes the application registered to handle OPERATION for DOCUMENT. OPERATION is typically \"open\", \"print\" or \"explore\" (but can be nil for the default action), and DOCUMENT is typically the name of a document file or URL, but can also be a program executable to run or a directory to open in the Windows Explorer. If DOCUMENT is a program executable, PARAMETERS can be a string containing command line parameters, but otherwise should be nil. SHOW-FLAG can be used to control whether the invoked application is hidden or minimized. If SHOW-FLAG is nil, the application is displayed normally, otherwise it is an integer representing a ShowWindow flag: 0 - start hidden 1 - start normally 3 - start maximized 6 - start minimized */ (operation, document, parameters, show_flag)) { /* Encode filename and current directory. */ Lisp_Object current_dir = Ffile_name_directory (document); int ret; CHECK_STRING (document); if (NILP (current_dir)) current_dir = current_buffer->directory; { Extbyte *opext = NULL; Extbyte *parmext = NULL; Extbyte *path = NULL; Extbyte *doc = NULL; if (STRINGP (operation)) opext = LISP_STRING_TO_TSTR (operation); /* #### What about path names, which may be links? */ if (STRINGP (parameters)) parmext = LISP_STRING_TO_TSTR (parameters); if (STRINGP (current_dir)) LISP_LOCAL_FILE_FORMAT_TO_TSTR (current_dir, path); if (STRINGP (document)) LISP_LOCAL_FILE_FORMAT_MAYBE_URL_TO_TSTR (document, doc); ret = (int) qxeShellExecute (NULL, opext, doc, parmext, path, (INTP (show_flag) ? XINT (show_flag) : SW_SHOWDEFAULT)); } if (ret <= 32) { /* Convert to more standard errors */ #define FROB(a, b) if (ret == a) ret = b FROB (SE_ERR_ACCESSDENIED, ERROR_ACCESS_DENIED); FROB (SE_ERR_ASSOCINCOMPLETE, ERROR_NO_ASSOCIATION); FROB (SE_ERR_DDEBUSY, ERROR_DDE_FAIL); FROB (SE_ERR_DDEFAIL, ERROR_DDE_FAIL); FROB (SE_ERR_DDETIMEOUT, ERROR_DDE_FAIL); FROB (SE_ERR_DLLNOTFOUND, ERROR_DLL_NOT_FOUND); FROB (SE_ERR_FNF, ERROR_FILE_NOT_FOUND); FROB (SE_ERR_NOASSOC, ERROR_NO_ASSOCIATION); FROB (SE_ERR_OOM, ERROR_NOT_ENOUGH_MEMORY); FROB (SE_ERR_PNF, ERROR_PATH_NOT_FOUND); FROB (SE_ERR_SHARE, ERROR_SHARING_VIOLATION); #undef FROB mswindows_report_process_error ("Running ShellExecute", ret == ERROR_PATH_NOT_FOUND ? list4 (Qunbound, operation, document, current_dir) : list3 (Qunbound, operation, document), ret); } return Qt; } #ifdef CYGWIN DEFUN ("mswindows-cygwin-to-win32-path", Fmswindows_cygwin_to_win32_path, 1, 1, 0, /* Get the cygwin environment to convert the Unix PATH to win32 format. No expansion is performed, all conversion is done by the cygwin runtime. */ (path)) { Ibyte *p; CHECK_STRING (path); /* There appears to be a bug in the cygwin conversion routines in that they are not idempotent. */ p = XSTRING_DATA (path); if (isalpha (p[0]) && (IS_DEVICE_SEP (p[1]))) return path; /* Use mule and cygwin-safe APIs top get at file data. */ LOCAL_FILE_FORMAT_TO_INTERNAL_MSWIN (p, p); return build_istring (p); } #endif struct read_link_hash { Ibyte *resolved; DWORD ticks; }; static Ibyte * mswindows_read_link_1 (const Ibyte *fname) { #if defined (NO_CYGWIN_COM_SUPPORT) || !defined (HAVE_MS_WINDOWS) return NULL; #else Ibyte *retval = NULL; Extbyte *fnameext; HANDLE fh; struct read_link_hash *rlh; DWORD ticks; /* The call below to resolve a link is rather time-consuming. I tried implementing a simple cache based on creation and write time of the file, but that didn't help enough -- maybe 30% faster but still a lot of time spent here. So just do something cheesy and don't check again if we've recently (< a second) done so. */ if (!mswindows_read_link_hash) mswindows_read_link_hash = make_string_hash_table (1000); fnameext = ITEXT_TO_TSTR (fname); /* See if we can find a cached value. */ /* The intermediate cast fools gcc into not outputting strict-aliasing complaints */ ticks = GetTickCount (); if (!gethash (fname, mswindows_read_link_hash, (const void **) (void *) &rlh)) { rlh = xnew_and_zero (struct read_link_hash); puthash (qxestrdup (fname), rlh, mswindows_read_link_hash); } else if (ticks - rlh->ticks < 1000) { return rlh->resolved ? qxestrdup (rlh->resolved) : NULL; } rlh->ticks = ticks; /* Retrieve creation/write time of link file. */ /* No access rights required to get info. */ if ((fh = qxeCreateFile (fnameext, 0, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE) { CloseHandle (fh); return NULL; } CloseHandle (fh); /* #### Note the following in the docs: Note: The IShellLink interface has an ANSI version (IShellLinkA) and a Unicode version (IShellLinkW). The version that will be used depends on whether you compile for ANSI or Unicode. However, Microsoft® Windows 95 and Microsoft® Windows 98 only support IShellLinkA. We haven't yet implemented COM support in the Unicode-splitting library. I don't quite understand how COM works yet, but it looks like what's happening is that the ShellLink class implements both the IShellLinkA and IShellLinkW interfaces. To make this work at run-time, we have to do something like this: -- define a new interface qxeIShellLink that uses Extbyte * instead of LPSTR or LPWSTR. (not totally necessary since Extbyte * == LPSTR). -- define a new class qxeShellLink that implements qxeIShellLink. the methods on this class need to create a shadow ShellLink object to do all the real work, and call the corresponding function from either the IShellLinkA or IShellLinkW interfaces on this object, depending on whether XEUNICODE_P is defined. -- with appropriate preprocessor magic, of course, we could make things appear transparent; but we've decided not to do preprocessor magic for the moment. */ /* #### Not Unicode-split for the moment; we have to do it ourselves. */ if (XEUNICODE_P) { IShellLinkW *psl; if (CoCreateInstance ( XECOMID (CLSID_ShellLink), NULL, CLSCTX_INPROC_SERVER, XECOMID (IID_IShellLinkW), &VOIDP_CAST (psl)) == S_OK) { IPersistFile *ppf; if (XECOMCALL2 (psl, QueryInterface, XECOMID (IID_IPersistFile), &VOIDP_CAST (ppf)) == S_OK) { Extbyte *fname_unicode; WIN32_FIND_DATAW wfd; LPWSTR resolved = alloca_array (WCHAR, PATH_MAX_TCHAR + 1); /* Always Unicode. Not obvious from the IPersistFile documentation, but look under "Shell Link" for example code. */ fname_unicode = fnameext; if (XECOMCALL2 (ppf, Load, (LPWSTR) fname_unicode, STGM_READ) == S_OK && /* #### YUCK! Docs read cchMaxPath Maximum number of bytes to copy to the buffer pointed to by the pszFile parameter. But "cch" means "count of characters", not bytes. I'll assume the doc writers messed up and the programmer was correct. Also, this approach is safe even if it's actually the other way around. */ #if defined (CYGWIN_HEADERS) && W32API_INSTALLED_VER < W32API_VER(2,2) /* Another Cygwin prototype error, fixed in v2.2 of w32api */ XECOMCALL4 (psl, GetPath, (LPSTR) resolved, PATH_MAX_TCHAR, &wfd, 0) #else XECOMCALL4 (psl, GetPath, resolved, PATH_MAX_TCHAR, &wfd, 0) #endif == S_OK) retval = TSTR_TO_ITEXT_MALLOC (resolved); XECOMCALL0 (ppf, Release); } XECOMCALL0 (psl, Release); } } else { IShellLinkA *psl; if (CoCreateInstance ( XECOMID (CLSID_ShellLink), NULL, CLSCTX_INPROC_SERVER, XECOMID (IID_IShellLinkA), &VOIDP_CAST (psl)) == S_OK) { IPersistFile *ppf; if (XECOMCALL2 (psl, QueryInterface, XECOMID (IID_IPersistFile), &VOIDP_CAST (ppf)) == S_OK) { Extbyte *fname_unicode; WIN32_FIND_DATAA wfd; LPSTR resolved = alloca_array (CHAR, PATH_MAX_TCHAR + 1); /* Always Unicode. Not obvious from the IPersistFile documentation, but look under "Shell Link" for example code. */ fname_unicode = ITEXT_TO_EXTERNAL (fname, Qmswindows_unicode); if (XECOMCALL2 (ppf, Load, (LPWSTR) fname_unicode, STGM_READ) == S_OK && XECOMCALL4 (psl, GetPath, resolved, PATH_MAX_TCHAR, &wfd, 0) == S_OK) retval = TSTR_TO_ITEXT_MALLOC (resolved); XECOMCALL0 (ppf, Release); } XECOMCALL0 (psl, Release); } } /* Cache newly found value */ if (rlh->resolved) xfree (rlh->resolved); rlh->resolved = retval ? qxestrdup (retval) : NULL; return retval; #endif /* NO_CYGWIN_COM_SUPPORT */ } /* Resolve a file that may be a shortcut. Accepts either a file ending with .LNK or without the ending. If a shortcut is found, returns a value that you must xfree(); otherwise NULL. */ Ibyte * mswindows_read_link (const Ibyte *fname) { int len = qxestrlen (fname); if (len > 4 && !qxestrcasecmp_ascii (fname + len - 4, ".LNK")) return mswindows_read_link_1 (fname); else { DECLARE_EISTRING (name2); eicpy_rawz (name2, fname); eicat_ascii (name2, ".LNK"); return mswindows_read_link_1 (eidata (name2)); } } #if defined (WIN32_NATIVE) || defined (CYGWIN_BROKEN_SIGNALS) /* setitimer() does not exist on native MS Windows, and appears broken on Cygwin (random lockups when BROKEN_SIGIO is defined), so we emulate in both cases by using multimedia timers. Furthermore, the lockups still occur on Cygwin even when we do nothing but use the standard signalling mechanism -- so we have to emulate that, too. (But only for timeouts -- we have to use the standard mechanism for SIGCHLD. Yuck.) */ /*--------------------------------------------------------------------*/ /* Signal support */ /*--------------------------------------------------------------------*/ #define sigmask(nsig) (1U << nsig) /* We can support as many signals as fit into word */ #define SIG_MAX 32 /* Signal handlers. Initial value = 0 = SIG_DFL */ static mswindows_sighandler signal_handlers[SIG_MAX] = {0}; /* Signal block mask: bit set to 1 means blocked */ unsigned signal_block_mask = 0; /* Signal pending mask: bit set to 1 means sig is pending */ unsigned signal_pending_mask = 0; mswindows_sighandler mswindows_sigset (int nsig, mswindows_sighandler handler) { /* We delegate some signals to the system function */ if (nsig == SIGFPE || nsig == SIGABRT || nsig == SIGINT) return signal (nsig, handler); if (nsig < 0 || nsig > SIG_MAX) { errno = EINVAL; return NULL; } /* Store handler ptr */ { mswindows_sighandler old_handler = signal_handlers[nsig]; signal_handlers[nsig] = handler; return old_handler; } } int mswindows_sighold (int nsig) { if (nsig < 0 || nsig > SIG_MAX) return errno = EINVAL; signal_block_mask |= sigmask (nsig); return 0; } int mswindows_sigrelse (int nsig) { if (nsig < 0 || nsig > SIG_MAX) return errno = EINVAL; signal_block_mask &= ~sigmask (nsig); if (signal_pending_mask & sigmask (nsig)) mswindows_raise (nsig); return 0; } int mswindows_sigpause (int UNUSED (nsig)) { /* This is currently not called, because the only call to sigpause inside XEmacs is with SIGCHLD parameter. Just in case, we put an assert here, so anyone who adds a call to sigpause will be surprised (or surprise someone else...) */ assert (0); return 0; } int mswindows_raise (int nsig) { /* We delegate some raises to the system routine */ if (nsig == SIGFPE || nsig == SIGABRT || nsig == SIGINT) return raise (nsig); if (nsig < 0 || nsig > SIG_MAX) return errno = EINVAL; /* If the signal is blocked, remember to issue later */ if (signal_block_mask & sigmask (nsig)) { signal_pending_mask |= sigmask (nsig); return 0; } if (signal_handlers[nsig] == SIG_IGN) return 0; if (signal_handlers[nsig] != SIG_DFL) { (*signal_handlers[nsig]) (nsig); return 0; } /* Default signal actions */ if (nsig == SIGALRM || nsig == SIGPROF) exit (3); /* Other signals are ignored by default */ return 0; } /*--------------------------------------------------------------------*/ /* Async timers */ /*--------------------------------------------------------------------*/ /* We emulate two timers, one for SIGALRM, another for SIGPROF. itimerproc() function has an implementation limitation: it does not allow to set *both* interval and period. If an attempt is made to set both, and then they are unequal, the function asserts. Minimum timer resolution on Win32 systems varies, and is greater than or equal than 1 ms. The resolution is always wrapped not to attempt to get below the system defined limit. */ /* Timer precision, denominator of one fraction: for 100 ms interval, request 10 ms precision */ const int setitimer_helper_timer_prec = 10; /* Last itimervals, as set by calls to setitimer */ static struct itimerval it_alarm; static struct itimerval it_prof; /* Timer IDs as returned by MM */ MMRESULT tid_alarm = 0; MMRESULT tid_prof = 0; static void CALLBACK setitimer_helper_proc (UINT UNUSED (uID), UINT UNUSED (uMsg), DWORD dwUser, DWORD UNUSED (dw1), DWORD UNUSED (dw2)) { /* Just raise the signal indicated by the dwUser parameter */ mswindows_raise (dwUser); } /* Divide time in ms specified by IT by DENOM. Return 1 ms if division results in zero */ static UINT setitimer_helper_period (const struct itimerval *it, UINT denom) { static TIMECAPS time_caps; UINT res; const struct timeval *tv = (it->it_value.tv_sec == 0 && it->it_value.tv_usec == 0) ? &it->it_interval : &it->it_value; /* Zero means stop timer */ if (tv->tv_sec == 0 && tv->tv_usec == 0) return 0; /* Convert to ms and divide by denom */ res = (tv->tv_sec * 1000 + (tv->tv_usec + 500) / 1000) / denom; /* Converge to minimum timer resolution */ if (time_caps.wPeriodMin == 0) timeGetDevCaps (&time_caps, sizeof(time_caps)); if (res < time_caps.wPeriodMin) res = time_caps.wPeriodMin; return res; } static int setitimer_helper (const struct itimerval *itnew, struct itimerval *itold, struct itimerval *itcurrent, MMRESULT *tid, DWORD sigkind) { UINT delay, resolution, event_type; /* First stop the old timer */ if (*tid) { timeKillEvent (*tid); timeEndPeriod (setitimer_helper_period (itcurrent, setitimer_helper_timer_prec)); *tid = 0; } /* Return old itimerval if requested */ if (itold) *itold = *itcurrent; *itcurrent = *itnew; /* Determine if to start new timer */ delay = setitimer_helper_period (itnew, 1); if (delay) { resolution = setitimer_helper_period (itnew, setitimer_helper_timer_prec); event_type = (itnew->it_value.tv_sec == 0 && itnew->it_value.tv_usec == 0) ? TIME_ONESHOT : TIME_PERIODIC; timeBeginPeriod (resolution); *tid = timeSetEvent (delay, resolution, setitimer_helper_proc, sigkind, event_type); } return !delay || *tid; } int mswindows_setitimer (int kind, const struct itimerval *itnew, struct itimerval *itold) { /* In this version, both interval and value are allowed only if they are equal. */ assert ((itnew->it_value.tv_sec == 0 && itnew->it_value.tv_usec == 0) || (itnew->it_interval.tv_sec == 0 && itnew->it_interval.tv_usec == 0) || (itnew->it_value.tv_sec == itnew->it_interval.tv_sec && itnew->it_value.tv_usec == itnew->it_interval.tv_usec)); if (kind == ITIMER_REAL) return setitimer_helper (itnew, itold, &it_alarm, &tid_alarm, SIGALRM); else if (kind == ITIMER_PROF) return setitimer_helper (itnew, itold, &it_prof, &tid_prof, SIGPROF); else return errno = EINVAL; } #endif /* defined (WIN32_NATIVE) || defined (CYGWIN_BROKEN_SIGNALS) */ void syms_of_win32 (void) { DEFSUBR (Fmswindows_shell_execute); #ifdef CYGWIN DEFSUBR (Fmswindows_cygwin_to_win32_path); #endif } void vars_of_win32 (void) { DEFVAR_LISP ("mswindows-downcase-file-names", &Vmswindows_downcase_file_names /* Non-nil means convert all-upper case file names to lower case. This applies when performing completions and file name expansion. */ ); Vmswindows_downcase_file_names = Qnil; DEFVAR_BOOL ("mswindows-shortcuts-are-symlinks", &mswindows_shortcuts_are_symlinks /* Non-nil means shortcuts (.LNK files) are treated as symbolic links. This works also for symlinks created under Cygwin, because they use .LNK files to implement symbolic links. */ ); mswindows_shortcuts_are_symlinks = 1; } void init_win32 (void) { init_potentially_nonexistent_functions (); } void init_win32_very_very_early (void) { mswindows_windows9x_p = GetVersion () & 0x80000000; }