annotate modules/base64/base64.c @ 2367:ecf1ebac70d8

[xemacs-hg @ 2004-11-04 23:05:23 by ben] commit mega-patch configure.in: Turn off -Winline and -Wchar-subscripts. Use the right set of cflags when compiling modules. Rewrite ldap configuration to separate the inclusion of lber (needed in recent Cygwin) from the basic checks for the needed libraries. add a function for MAKE_JUNK_C; initially code was added to generate xemacs.def using this, but it will need to be rewritten. add an rm -f for junk.c to avoid weird Cygwin bug with cp -f onto an existing file. Sort list of auto-detected functions and eliminate unused checks for stpcpy, setlocale and getwd. Add autodetection of Cygwin scanf problems BETA: Rewrite section on configure to indicate what flags are important and what not. digest-doc.c, make-dump-id.c, profile.c, sorted-doc.c: Add proper decls for main(). make-msgfile.c: Document that this is old junk. Move proposal to text.c. make-msgfile.lex: Move proposal to text.c. make-mswin-unicode.pl: Convert error-generating code so that the entire message will be seen as a single unrecognized token. mule/mule-ccl.el: Update docs. lispref/mule.texi: Update CCL docs. ldap/eldap.c: Mule-ize. Use EXTERNAL_LIST_LOOP_2 instead of deleted EXTERNAL_LIST_LOOP. * XEmacs 21.5.18 "chestnut" is released. --------------------------------------------------------------- MULE-RELATED WORK: --------------------------------------------------------------- --------------------------- byte-char conversion --------------------------- buffer.c, buffer.h, insdel.c, text.c: Port FSF algorithm for byte-char conversion, replacing broken previous version. Track the char position of the gap. Add functions to do char-byte conversion downwards as well as upwards. Move comments about algorithm workings to internals manual. --------------------------- work on types --------------------------- alloc.c, console-x-impl.h, dump-data.c, dump-data.h, dumper.c, dialog-msw.c, dired-msw.c, doc.c, editfns.c, esd.c, event-gtk.h, event-msw.c, events.c, file-coding.c, file-coding.h, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-shared.c, glyphs-x.c, glyphs.c, glyphs.h, gui.c, hpplay.c, imgproc.c, intl-win32.c, lrecord.h, lstream.c, keymap.c, lisp.h, libsst.c, linuxplay.c, miscplay.c, miscplay.h, mule-coding.c, nas.c, nt.c, ntheap.c, ntplay.c, objects-msw.c, objects-tty.c, objects-x.c, print.c, process-nt.c, process.c, redisplay.h, select-common.h, select-gtk.c, select-x.c, sgiplay.c, sound.c, sound.h, sunplay.c, sysfile.h, sysdep.c, syswindows.h, text.c, unexnt.c, win32.c, xgccache.c: Further work on types. This creates a full set of types for all the basic semantics of `char' that I have so far identified, so that its semantics can always be identified for the purposes of proper Mule-safe code, and the raw use of `char' always avoided. (1) More type renaming, for consistency of naming. Char_ASCII -> Ascbyte UChar_ASCII -> UAscbyte Char_Binary -> CBinbyte UChar_Binary -> Binbyte SChar_Binary -> SBinbyte (2) Introduce Rawbyte, CRawbyte, Boolbyte, Chbyte, UChbyte, and Bitbyte and use them. (3) New types Itext, Wexttext and Textcount for separating out the concepts of bytes and textual units (different under UTF-16 and UTF-32, which are potential internal encodings). (4) qxestr*_c -> qxestr*_ascii. lisp.h: New; goes with other qxe() functions. #### Maybe goes in a different section. lisp.h: Group generic int-type defs together with EMACS_INT defs. lisp.h: * lisp.h (WEXTTEXT_IS_WIDE) New defns. lisp.h: New type to replace places where int occurs as a boolean. It's signed because occasionally people may want to use -1 as an error value, and because unsigned ints are viral -- see comments in the internals manual against using them. dynarr.c: int -> Bytecount. --------------------------- Mule-izing --------------------------- device-x.c: Partially Mule-ize. dumper.c, dumper.h: Mule-ize. Use Rawbyte. Use stderr_out not printf. Use wext_*(). sysdep.c, syswindows.h, text.c: New Wexttext API for manipulation of external text that may be Unicode (e.g. startup code under Windows). emacs.c: Mule-ize. Properly deal with argv in external encoding. Use wext_*() and Wexttext. Use Rawbyte. #if 0 some old junk on SCO that is unlikely to be correct. Rewrite allocation code in run-temacs. emacs.c, symsinit.h, win32.c: Rename win32 init function and call it even earlier, to initialize mswindows_9x_p even earlier, for use in startup code (XEUNICODE_P). process.c: Use _wenviron not environ under Windows, to get Unicode environment variables. event-Xt.c: Mule-ize drag-n-drop related stuff. dragdrop.c, dragdrop.h, frame-x.c: Mule-ize. text.h: Add some more stand-in defines for particular kinds of conversion; use in Mule-ization work in frame-x.c etc. --------------------------- Freshening --------------------------- intl-auto-encap-win32.c, intl-auto-encap-win32.h: Regenerate. --------------------------- Unicode-work --------------------------- intl-win32.c, syswindows.h: Factor out common options to MultiByteToWideChar and WideCharToMultiByte. Add convert_unicode_to_multibyte_malloc() and convert_unicode_to_multibyte_dynarr() and use. Add stuff for alloca() conversion of multibyte/unicode. alloc.c: Use dfc_external_data_len() in case of unicode coding system. alloc.c, mule-charset.c: Don't zero out and reinit charset Unicode tables. This fucks up dump-time loading. Anyway, either we load them at dump time or run time, never both. unicode.c: Dump the blank tables as well. --------------------------------------------------------------- DOCUMENTATION, MOSTLY MULE-RELATED: --------------------------------------------------------------- EmacsFrame.c, emodules.c, event-Xt.c, fileio.c, input-method-xlib.c, mule-wnnfns.c, redisplay-gtk.c, redisplay-tty.c, redisplay-x.c, regex.c, sysdep.c: Add comment about Mule work needed. text.h: Add more documentation describing why DFC routines were not written to return their value. Add some other DFC documentation. console-msw.c, console-msw.h: Add pointer to docs in win32.c. emacs.c: Add comments on sources of doc info. text.c, charset.h, unicode.c, intl-win32.c, intl-encap-win32.c, text.h, file-coding.c, mule-coding.c: Collect background comments and related to text matters and internationalization, and proposals for work to be done, in text.c or Internals manual, stuff related to specific textual API's in text.h, and stuff related to internal implementation of Unicode conversion in unicode.c. Put lots of pointers to the comments to make them easier to find. s/mingw32.h, s/win32-common.h, s/win32-native.h, s/windowsnt.h, win32.c: Add bunches of new documentation on the different kinds of builds and environments under Windows and how they work. Collect this info in win32.c. Add pointers to these docs in the relevant s/* files. emacs.c: Document places with long comments. Remove comment about exiting, move to internals manual, put in pointer. event-stream.c: Move docs about event queues and focus to internals manual, put in pointer. events.h: Move docs about event stream callbacks to internals manual, put in pointer. profile.c, redisplay.c, signal.c: Move documentation to the Internals manual. process-nt.c: Add pointer to comment in win32-native.el. lisp.h: Add comments about some comment conventions. lisp.h: Add comment about the second argument. device-msw.c, redisplay-msw.c: @@#### comments are out-of-date. --------------------------------------------------------------- PDUMP WORK (MOTIVATED BY UNICODE CHANGES) --------------------------------------------------------------- alloc.c, buffer.c, bytecode.c, console-impl.h, console.c, device.c, dumper.c, lrecord.h, elhash.c, emodules.h, events.c, extents.c, frame.c, glyphs.c, glyphs.h, mule-charset.c, mule-coding.c, objects.c, profile.c, rangetab.c, redisplay.c, specifier.c, specifier.h, window.c, lstream.c, file-coding.h, file-coding.c: PDUMP: Properly implement dump_add_root_block(), which never worked before, and is necessary for dumping Unicode tables. Pdump name changes for accuracy: XD_STRUCT_PTR -> XD_BLOCK_PTR. XD_STRUCT_ARRAY -> XD_BLOCK_ARRAY. XD_C_STRING -> XD_ASCII_STRING. *_structure_* -> *_block_*. lrecord.h: some comments added about dump_add_root_block() vs dump_add_root_block_ptr(). extents.c: remove incorrect comment about pdump problems with gap array. --------------------------------------------------------------- ALLOCATION --------------------------------------------------------------- abbrev.c, alloc.c, bytecode.c, casefiddle.c, device-msw.c, device-x.c, dired-msw.c, doc.c, doprnt.c, dragdrop.c, editfns.c, emodules.c, file-coding.c, fileio.c, filelock.c, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-x.c, gui-msw.c, gui-x.c, imgproc.c, intl-win32.c, lread.c, menubar-gtk.c, menubar.c, nt.c, objects-msw.c, objects-x.c, print.c, process-nt.c, process-unix.c, process.c, realpath.c, redisplay.c, search.c, select-common.c, symbols.c, sysdep.c, syswindows.h, text.c, text.h, ui-byhand.c: New macros {alloca,xnew}_{itext,{i,ext,raw,bin,asc}bytes} for more convenient allocation of these commonly requested items. Modify functions to use alloca_ibytes, alloca_array, alloca_extbytes, xnew_ibytes, etc. also XREALLOC_ARRAY, xnew. alloc.c: Rewrite the allocation functions to factor out repeated code. Add assertions for freeing dumped data. lisp.h: Moved down and consolidated with other allocation stuff. lisp.h, dynarr.c: New functions for allocation that's very efficient when mostly in LIFO order. lisp.h, text.c, text.h: Factor out some stuff for general use by alloca()-conversion funs. text.h, lisp.h: Fill out convenience routines for allocating various kinds of bytes and put them in lisp.h. Use them in place of xmalloc(), ALLOCA(). text.h: Fill out the convenience functions so the _MALLOC() kinds match the alloca() kinds. --------------------------------------------------------------- ERROR-CHECKING --------------------------------------------------------------- text.h: Create ASSERT_ASCTEXT_ASCII() and ASSERT_ASCTEXT_ASCII_LEN() from similar Eistring checkers and change the Eistring checkers to use them instead. --------------------------------------------------------------- MACROS IN LISP.H --------------------------------------------------------------- lisp.h: Redo GCPRO declarations. Create a "base" set of functions that can be used to generate any kind of gcpro sets -- regular, ngcpro, nngcpro, private ones used in GC_EXTERNAL_LIST_LOOP_2. buffer.c, callint.c, chartab.c, console-msw.c, device-x.c, dialog-msw.c, dired.c, extents.c, ui-gtk.c, rangetab.c, nt.c, mule-coding.c, minibuf.c, menubar-msw.c, menubar.c, menubar-gtk.c, lread.c, lisp.h, gutter.c, glyphs.c, glyphs-widget.c, fns.c, fileio.c, file-coding.c, specifier.c: Eliminate EXTERNAL_LIST_LOOP, which does not check for circularities. Use EXTERNAL_LIST_LOOP_2 instead or EXTERNAL_LIST_LOOP_3 or EXTERNAL_PROPERTY_LIST_LOOP_3 or GC_EXTERNAL_LIST_LOOP_2 (new macro). Removed/redid comments on EXTERNAL_LIST_LOOP. --------------------------------------------------------------- SPACING FIXES --------------------------------------------------------------- callint.c, hftctl.c, number-gmp.c, process-unix.c: Spacing fixes. --------------------------------------------------------------- FIX FOR GEOMETRY PROBLEM IN FIRST FRAME --------------------------------------------------------------- unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by release 1.5.12 of Cygwin]. toolbar.c: bug fix for problem of initial frame being 77 chars wide on Windows. will be overridden by my other ws. --------------------------------------------------------------- FIX FOR LEAKING PROCESS HANDLES: --------------------------------------------------------------- process-nt.c: Fixes for leaking handles. Inspired by work done by Adrian Aichner <adrian@xemacs.org>. --------------------------------------------------------------- FIX FOR CYGWIN BUG (Unicode-related): --------------------------------------------------------------- unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by release 1.5.12 of Cygwin]. --------------------------------------------------------------- WARNING FIXES: --------------------------------------------------------------- console-stream.c: `reinit' is unused. compiler.h, event-msw.c, frame-msw.c, intl-encap-win32.c, text.h: Add stuff to deal with ANSI-aliasing warnings I got. regex.c: Gather includes together to avoid warning. --------------------------------------------------------------- CHANGES TO INITIALIZATION ROUTINES: --------------------------------------------------------------- buffer.c, emacs.c, console.c, debug.c, device-x.c, device.c, dragdrop.c, emodules.c, eval.c, event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, event-tty.c, events.c, extents.c, faces.c, file-coding.c, fileio.c, font-lock.c, frame-msw.c, glyphs-widget.c, glyphs.c, gui-x.c, insdel.c, lread.c, lstream.c, menubar-gtk.c, menubar-x.c, minibuf.c, mule-wnnfns.c, objects-msw.c, objects.c, print.c, scrollbar-x.c, search.c, select-x.c, text.c, undo.c, unicode.c, window.c, symsinit.h: Call reinit_*() functions directly from emacs.c, for clarity. Factor out some redundant init code. Move disallowed stuff that had crept into vars_of_glyphs() into complex_vars_of_glyphs(). Call init_eval_semi_early() from eval.c not in the middle of vars_of_() in emacs.c since there should be no order dependency in the latter calls. --------------------------------------------------------------- ARMAGEDDON: --------------------------------------------------------------- alloc.c, emacs.c, lisp.h, print.c: Rename inhibit_non_essential_printing_operations to inhibit_non_essential_conversion_operations. text.c: Assert on !inhibit_non_essential_conversion_operations. console-msw.c, print.c: Don't do conversion in SetConsoleTitle or FindWindow to avoid problems during armageddon. Put #errors for NON_ASCII_INTERNAL_FORMAT in places where problems would arise. --------------------------------------------------------------- CHANGES TO THE BUILD PROCEDURE: --------------------------------------------------------------- config.h.in, s/cxux.h, s/usg5-4-2.h, m/powerpc.h: Add comment about correct ordering of this file. Rearrange everything to follow this -- put all #undefs together and before the s&m files. Add undefs for HAVE_ALLOCA, C_ALLOCA, BROKEN_ALLOCA_IN_FUNCTION_CALLS, STACK_DIRECTION. Remove unused HAVE_STPCPY, HAVE_GETWD, HAVE_SETLOCALE. m/gec63.h: Deleted; totally broken, not used at all, not in FSF. m/7300.h, m/acorn.h, m/alliant-2800.h, m/alliant.h, m/altos.h, m/amdahl.h, m/apollo.h, m/att3b.h, m/aviion.h, m/celerity.h, m/clipper.h, m/cnvrgnt.h, m/convex.h, m/cydra5.h, m/delta.h, m/delta88k.h, m/dpx2.h, m/elxsi.h, m/ews4800r.h, m/gould.h, m/hp300bsd.h, m/hp800.h, m/hp9000s300.h, m/i860.h, m/ibmps2-aix.h, m/ibmrs6000.h, m/ibmrt-aix.h, m/ibmrt.h, m/intel386.h, m/iris4d.h, m/iris5d.h, m/iris6d.h, m/irist.h, m/isi-ov.h, m/luna88k.h, m/m68k.h, m/masscomp.h, m/mg1.h, m/mips-nec.h, m/mips-siemens.h, m/mips.h, m/news.h, m/nh3000.h, m/nh4000.h, m/ns32000.h, m/orion105.h, m/pfa50.h, m/plexus.h, m/pmax.h, m/powerpc.h, m/pyrmips.h, m/sequent-ptx.h, m/sequent.h, m/sgi-challenge.h, m/symmetry.h, m/tad68k.h, m/tahoe.h, m/targon31.h, m/tekxd88.h, m/template.h, m/tower32.h, m/tower32v3.h, m/ustation.h, m/vax.h, m/wicat.h, m/xps100.h: Delete C_ALLOCA, HAVE_ALLOCA, STACK_DIRECTION, BROKEN_ALLOCA_IN_FUNCTION_CALLS. All of this is auto-detected. When in doubt, I followed recent FSF sources, which also have these things deleted.
author ben
date Thu, 04 Nov 2004 23:08:28 +0000
parents 8661af9617f8
children 0ac12485616c
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1 /* base64 interface for XEmacs.
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2 Copyright (C) 1998, 1999 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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23 /* Author: William Perry <wmperry@aventail.com> */
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24
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25 #include <emodules.h>
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26
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27 unsigned char alphabet[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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28
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29 DEFUN ("base64-encode", Fbase64_encode, 1, 5, 0, /*
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30 Return the base64 encoding of an object.
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31 OBJECT is either a string or a buffer.
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32 Optional arguments START and END denote buffer positions for computing the
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33 hash of a portion of OBJECT. The optional CODING argument specifies the coding
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34 system the text is to be represented in while computing the digest. This only
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35 has meaning with MULE, and defaults to the current format of the data.
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36 If ERROR-ME-NOT is nil, report an error if the coding system can't be
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37 determined. Else assume binary coding if all else fails.
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38 */
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39 (object, start, end, coding, error_me_not))
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40 {
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41 int cols,bits,char_count;
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42 Lisp_Object instream, outstream,deststream;
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43 Lstream *istr, *ostr, *dstr;
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44 static Extbyte_dynarr *conversion_out_dynarr;
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45 static Extbyte_dynarr *out_dynarr;
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46 char tempbuf[1024]; /* some random amount */
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47 struct gcpro gcpro1, gcpro2;
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48 #ifdef FILE_CODING
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49 Lisp_Object conv_out_stream, coding_system;
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50 Lstream *costr;
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51 struct gcpro gcpro3;
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52 #endif
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53
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54 if (!conversion_out_dynarr)
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55 conversion_out_dynarr = Dynarr_new (Extbyte);
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56 else
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57 Dynarr_reset (conversion_out_dynarr);
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58
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59 if (!out_dynarr)
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60 out_dynarr = Dynarr_new(Extbyte);
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61 else
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62 Dynarr_reset (out_dynarr);
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63
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64 char_count = bits = cols = 0;
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65
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66 /* set up the in stream */
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67 if (BUFFERP (object))
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68 {
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69 struct buffer *b = XBUFFER (object);
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8661af9617f8 [xemacs-hg @ 2002-02-15 20:57:56 by wmperry]
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70 Charbpos begv, endv;
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71 /* Figure out where we need to get info from */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
72 get_buffer_range_char (b, start, end, &begv, &endv, GB_ALLOW_NIL);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
73
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
74 instream = make_lisp_buffer_input_stream (b, begv, endv, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
75 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
76 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
77 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
78 Bytecount bstart, bend;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
79 CHECK_STRING (object);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
80 get_string_range_byte (object, start, end, &bstart, &bend,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
81 GB_HISTORICAL_STRING_BEHAVIOR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
82 instream = make_lisp_string_input_stream (object, bstart, bend);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
83 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
84 istr = XLSTREAM (instream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
85
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
86 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
87 /* Find out what format the buffer will be saved in, so we can make
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
88 the digest based on what it will look like on disk */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
89 if (NILP(coding))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
90 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
91 if (BUFFERP(object))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
92 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
93 /* Use the file coding for this buffer by default */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
94 coding_system = XBUFFER(object)->buffer_file_coding_system;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
95 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
96 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
97 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
98 /* attempt to autodetect the coding of the string. Note: this VERY hit-and-miss */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
99 enum eol_type eol = EOL_AUTODETECT;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
100 coding_system = Fget_coding_system(Qundecided);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
101 determine_real_coding_system(istr, &coding_system, &eol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
102 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
103 if (NILP(coding_system))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
104 coding_system = Fget_coding_system(Qbinary);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
105 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
106 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
107 coding_system = Ffind_coding_system (coding_system);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
108 if (NILP(coding_system))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
109 coding_system = Fget_coding_system(Qbinary);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
110 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
111 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
112 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
113 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
114 coding_system = Ffind_coding_system (coding);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
115 if (NILP(coding_system))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
116 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
117 if (NILP(error_me_not))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
118 signal_simple_error("No such coding system", coding);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
119 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
120 coding_system = Fget_coding_system(Qbinary); /* default to binary */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
121 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
122 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
123 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
124
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
125 /* setup the out stream */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
126 outstream = make_dynarr_output_stream((unsigned_char_dynarr *)conversion_out_dynarr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
127 ostr = XLSTREAM (outstream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
128 deststream = make_dynarr_output_stream((unsigned_char_dynarr *)out_dynarr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
129 dstr = XLSTREAM (deststream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
130 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
131 /* setup the conversion stream */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
132 conv_out_stream = make_encoding_output_stream (ostr, coding_system);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
133 costr = XLSTREAM (conv_out_stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
134 GCPRO3 (instream, outstream, conv_out_stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
135 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
136 GCPRO2 (instream, outstream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
137 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
138
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
139 /* Get the data while doing the conversion */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
140 while (1) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
141 int size_in_bytes = Lstream_read (istr, tempbuf, sizeof (tempbuf));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
142 int l;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
143 if (!size_in_bytes)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
144 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
145 /* It does seem the flushes are necessary... */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
146 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
147 Lstream_write (costr, tempbuf, size_in_bytes);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
148 Lstream_flush (costr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
149 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
150 Lstream_write (ostr, tempbuf, size_in_bytes);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
151 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
152 Lstream_flush (ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
153
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
154 /* Update the base64 output buffer */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
155 for (l = 0; l < size_in_bytes; l++) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
156 bits += Dynarr_at(conversion_out_dynarr,l);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
157 char_count++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
158 if (char_count == 3) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
159 static char obuf[4];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
160 obuf[0] = alphabet[(bits >> 18)];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
161 obuf[1] = alphabet[(bits >> 12) & 0x3f];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
162 obuf[2] = alphabet[(bits >> 6) & 0x3f];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
163 obuf[3] = alphabet[bits & 0x3f];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
164
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
165 Lstream_write(dstr,obuf,sizeof(obuf));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
166 cols += 4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
167 if (cols == 72) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
168 Lstream_write(dstr,"\n",sizeof(unsigned char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
169 cols = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
170 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
171 bits = char_count = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
172 } else {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
173 bits <<= 8;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
174 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
175 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
176 /* reset the dynarr */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
177 Lstream_rewind(ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
178 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
179 Lstream_close (istr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
180 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
181 Lstream_close (costr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
182 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
183 Lstream_close (ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
184
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
185 if (char_count != 0) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
186 bits <<= 16 - (8 * char_count);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
187 Lstream_write(dstr,&alphabet[bits >> 18],sizeof(unsigned char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
188 Lstream_write(dstr,&alphabet[(bits >> 12) & 0x3f],sizeof(unsigned char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
189 if (char_count == 1) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
190 Lstream_write(dstr,"==",2 * sizeof(unsigned char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
191 } else {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
192 Lstream_write(dstr,&alphabet[(bits >> 6) & 0x3f],sizeof(unsigned char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
193 Lstream_write(dstr,"=",sizeof(unsigned char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
194 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
195 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
196 #if 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
197 if (cols > 0) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
198 Lstream_write(dstr,"\n",sizeof(unsigned char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
199 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
200 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
201 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
202 Lstream_delete (istr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
203 Lstream_delete (ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
204 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
205 Lstream_delete (costr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
206 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
207 Lstream_flush(dstr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
208 Lstream_delete(dstr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
209
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
210 return(make_string(Dynarr_atp(out_dynarr,0),Dynarr_length(out_dynarr)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
211 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
212
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
213 DEFUN ("base64-decode", Fbase64_decode, 1, 5, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
214 Undo the base64 encoding of an object.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
215 OBJECT is either a string or a buffer.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
216 Optional arguments START and END denote buffer positions for computing the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
217 hash of a portion of OBJECT. The optional CODING argument specifies the coding
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
218 system the text is to be represented in while computing the digest. This only
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
219 has meaning with MULE, and defaults to the current format of the data.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
220 If ERROR-ME-NOT is nil, report an error if the coding system can't be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
221 determined. Else assume binary coding if all else fails.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
222 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
223 (object, start, end, coding, error_me_not))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
224 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
225 static char inalphabet[256], decoder[256];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
226 int i,cols,bits,char_count,hit_eof;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
227 Lisp_Object instream, outstream,deststream;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
228 Lstream *istr, *ostr, *dstr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
229 static Extbyte_dynarr *conversion_out_dynarr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
230 static Extbyte_dynarr *out_dynarr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
231 char tempbuf[1024]; /* some random amount */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
232 struct gcpro gcpro1, gcpro2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
233 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
234 Lisp_Object conv_out_stream, coding_system;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
235 Lstream *costr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
236 struct gcpro gcpro3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
237 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
238
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
239 for (i = (sizeof alphabet) - 1; i >= 0 ; i--) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
240 inalphabet[alphabet[i]] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
241 decoder[alphabet[i]] = i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
242 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
243
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
244 if (!conversion_out_dynarr)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
245 conversion_out_dynarr = Dynarr_new (Extbyte);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
246 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
247 Dynarr_reset (conversion_out_dynarr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
248
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
249 if (!out_dynarr)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
250 out_dynarr = Dynarr_new(Extbyte);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
251 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
252 Dynarr_reset (out_dynarr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
253
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
254 char_count = bits = cols = hit_eof = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
255
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
256 /* set up the in stream */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
257 if (BUFFERP (object))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
258 {
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 428
diff changeset
259 struct buffer *b = XBUFFER (object);
754
8661af9617f8 [xemacs-hg @ 2002-02-15 20:57:56 by wmperry]
wmperry
parents: 444
diff changeset
260 Charbpos begv, endv;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
261 /* Figure out where we need to get info from */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
262 get_buffer_range_char (b, start, end, &begv, &endv, GB_ALLOW_NIL);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
263
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
264 instream = make_lisp_buffer_input_stream (b, begv, endv, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
265 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
266 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
267 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
268 Bytecount bstart, bend;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
269 CHECK_STRING (object);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
270 get_string_range_byte (object, start, end, &bstart, &bend,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
271 GB_HISTORICAL_STRING_BEHAVIOR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
272 instream = make_lisp_string_input_stream (object, bstart, bend);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
273 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
274 istr = XLSTREAM (instream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
275
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
276 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
277 /* Find out what format the buffer will be saved in, so we can make
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
278 the digest based on what it will look like on disk */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
279 if (NILP(coding))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
280 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
281 if (BUFFERP(object))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
282 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
283 /* Use the file coding for this buffer by default */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
284 coding_system = XBUFFER(object)->buffer_file_coding_system;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
285 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
286 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
287 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
288 /* attempt to autodetect the coding of the string. Note: this VERY hit-and-miss */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
289 enum eol_type eol = EOL_AUTODETECT;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
290 coding_system = Fget_coding_system(Qundecided);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
291 determine_real_coding_system(istr, &coding_system, &eol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
292 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
293 if (NILP(coding_system))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
294 coding_system = Fget_coding_system(Qbinary);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
295 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
296 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
297 coding_system = Ffind_coding_system (coding_system);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
298 if (NILP(coding_system))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
299 coding_system = Fget_coding_system(Qbinary);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
300 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
301 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
302 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
303 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
304 coding_system = Ffind_coding_system (coding);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
305 if (NILP(coding_system))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
306 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
307 if (NILP(error_me_not))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
308 signal_simple_error("No such coding system", coding);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
309 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
310 coding_system = Fget_coding_system(Qbinary); /* default to binary */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
311 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
312 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
313 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
314
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
315 /* setup the out stream */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
316 outstream = make_dynarr_output_stream((unsigned_char_dynarr *)conversion_out_dynarr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
317 ostr = XLSTREAM (outstream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
318 deststream = make_dynarr_output_stream((unsigned_char_dynarr *)out_dynarr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
319 dstr = XLSTREAM (deststream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
320 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
321 /* setup the conversion stream */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
322 conv_out_stream = make_encoding_output_stream (ostr, coding_system);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
323 costr = XLSTREAM (conv_out_stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
324 GCPRO3 (instream, outstream, conv_out_stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
325 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
326 GCPRO2 (instream, outstream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
327 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
328
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
329 /* Get the data while doing the conversion */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
330 while (1) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
331 int size_in_bytes = Lstream_read (istr, tempbuf, sizeof (tempbuf));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
332 int l;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
333 if (!size_in_bytes) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
334 hit_eof = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
335 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
336 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
337 /* It does seem the flushes are necessary... */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
338 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
339 Lstream_write (costr, tempbuf, size_in_bytes);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
340 Lstream_flush (costr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
341 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
342 Lstream_write (ostr, tempbuf, size_in_bytes);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
343 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
344 Lstream_flush (ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
345
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
346 /* Update the base64 output buffer */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
347 for (l = 0; l < size_in_bytes; l++) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
348 if (Dynarr_at(conversion_out_dynarr,l) == '=')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
349 goto decoder_out;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
350 bits += decoder[Dynarr_at(conversion_out_dynarr,l)];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
351 fprintf(stderr,"%d\n",bits);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
352 char_count++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
353 if (char_count == 4) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
354 static unsigned char obuf[3];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
355 obuf[0] = (bits >> 16);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
356 obuf[1] = (bits >> 8) & 0xff;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
357 obuf[2] = (bits & 0xff);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
358
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
359 Lstream_write(dstr,obuf,sizeof(obuf));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
360 bits = char_count = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
361 } else {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
362 bits <<= 6;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
363 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
364 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
365 /* reset the dynarr */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
366 Lstream_rewind(ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
367 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
368 decoder_out:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
369 Lstream_close (istr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
370 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
371 Lstream_close (costr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
372 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
373 Lstream_close (ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
374
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
375 if (hit_eof) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
376 if (char_count) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
377 error_with_frob(object,"base64-decode failed: at least %d bits truncated",((4 - char_count) * 6));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
378 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
379 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
380 switch(char_count) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
381 case 1:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
382 error_with_frob(object, "base64 encoding incomplete: at least 2 bits missing");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
383 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
384 case 2:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
385 char_count = bits >> 10;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
386 Lstream_write(dstr,&char_count,sizeof(char_count));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
387 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
388 case 3:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
389 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
390 unsigned char buf[2];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
391 buf[0] = (bits >> 16);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
392 buf[1] = (bits >> 8) & 0xff;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
393 Lstream_write(dstr,buf,sizeof(buf));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
394 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
395 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
396 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
397
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
398 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
399 Lstream_delete (istr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
400 Lstream_delete (ostr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
401 #ifdef FILE_CODING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
402 Lstream_delete (costr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
403 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
404 Lstream_flush(dstr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
405 Lstream_delete(dstr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
406
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
407 return(make_string(Dynarr_atp(out_dynarr,0),Dynarr_length(out_dynarr)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
408 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
409
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
410 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
411 syms_of_base64 (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
412 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
413 DEFSUBR(Fbase64_encode);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
414 DEFSUBR(Fbase64_decode);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
415 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
416
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
417 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
418 vars_of_base64 (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
419 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
420 Fprovide (intern ("base64"));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
421 }