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[xemacs-hg @ 2003-02-21 06:56:46 by ben] redisplay fixes et al. PROBLEMS: Add comment about Cygwin, unexec and sysmalloc. Move some non-general stuff out of general. Make a section for x86. configure.in: Add check for broken alloca in funcalls. mule/mule-cmds.el: Alias file-name to native not vice-versa. Do set EOL of native but not of process output to fix various problems and be consistent with code-init.el. code-cmds.el: Return a name not a coding system. code-init.el: Reindent. Remove `file-name' since it should always be the same as native. unicode.el: Rename to load-unicode-mapping-table as suggested by the anonymous (but rather Turnbullian) comment in unicode.c. xemacs.dsp: Add /k to default build. alloc.c: Make gc_currently_forbidden static. config.h.in, lisp.h: Move some stuff to lisp.h. console-gtk.h, console-impl.h, console-msw.h, console-x.h, event-Xt.c, event-msw.c, redisplay-gtk.c, redisplay-msw.c, redisplay-output.c, redisplay-x.c, gtk-xemacs.c: Remove duplicated code to redraw exposed area. Add deadbox method needed by the generalized redraw code. Defer redrawing if already in redisplay. frame-msw.c, event-stream.c, frame.c: Add comments about calling Lisp. debug.c, general-slots.h: Move generalish symbols to general-slots.h. doprnt.c: reindent. lisp.h, dynarr.c: Add debug code for locking a dynarr to catch invalid mods. Use in redisplay.c. eval.c: file-coding.c: Define file-name as alias for native not vice-versa. frame-gtk.c, frame-x.c: Move Qwindow_id to general-slots. dialog-msw.c, glyphs-gtk.c, glyphs-msw.c, glyphs-widget.c, glyphs-x.c, gui.c, gui.h, menubar-msw.c, menubar.c: Ensure that various glyph functions that eval within redisplay protect the evals. Same for calls to internal_equal(). Modify various functions, e.g. gui_item_*(), to protect evals within redisplay, taking an in_redisplay parameter if it's possible for them to be called both inside and outside of redisplay. gutter.c: Defer specifier-changed updating till after redisplay, if necessary, since we need to enter redisplay to do it. gutter.c: Do nothing if in redisplay. lisp.h: Add version of alloca() for use in function calls. lisp.h: Add XCAD[D+]R up to 6 D's, and aliases X1ST, X2ND, etc. frame.c, frame.h, redisplay.c, redisplay.h, signal.c, toolbar.c: Redo critical-section code and move from frame.c to redisplay.c. Require that every place inside of redisplay catch errors itself, not at the edge of the critical section (thereby bypassing the rest of redisplay and leaving things in an inconsistent state). Introduce separate means of holding frame-size changes without entering a complete critical section. Introduce "post-redisplay" methods for deferring things till after redisplay. Abort if we enter redisplay reentrantly. Disable all quit checking in redisplay since it's too dangerous. Ensure that all calls to QUIT trigger an abort if unprotected. redisplay.c, scrollbar-gtk.c, scrollbar-x.c, scrollbar.c: Create enter/exit_redisplay_critical_section_maybe() for code that needs to ensure it's in a critical section but doesn't interfere with an existing critical section. sysdep.c: Use _wexecve() when under Windows NT for Unicode correctness. text.c, text.h: Add new_dfc() functions, which return an alloca()ed value rather than requiring an lvalue. (Not really used yet; used in another workspace, to come.) Add some macros for SIZED_EXTERNAL. Update the encoding aliases after involved scrutinization of the X manual. unicode.c: Answer the anonymous but suspiciously Turnbullian questions. Rename parse-unicode-translation-table to load-unicode-mapping-table, as suggested.
author ben
date Fri, 21 Feb 2003 06:57:21 +0000
parents b39c14581166
children 49316578f12d
line wrap: on
line source

/*
Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)

Permission to use, copy, modify, and distribute this material 
for any purpose and without fee is hereby granted, provided 
that the above copyright notice and this permission notice 
appear in all copies, and that the name of Bellcore not be 
used in advertising or publicity pertaining to this 
material without the specific, prior written permission 
of an authorized representative of Bellcore.  BELLCORE 
MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY 
OF THIS MATERIAL FOR ANY PURPOSE.  IT IS PROVIDED "AS IS", 
WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
*/

#define NEWLINE_CHAR '\n'
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>

static void
output64chunk(int c1, int c2, int c3, int pads, FILE *outfile);

static signed char basis_64[] =
   "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

static signed char index_64[128] = {
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
    52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1,-1,-1,-1,
    -1, 0, 1, 2,  3, 4, 5, 6,  7, 8, 9,10, 11,12,13,14,
    15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,
    -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
    41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1
};

#define char64(c)  (((c) < 0 || (c) > 127) ? -1 : index_64[(c)])

/*
char64(c)
char c;
{
    char *s = (char *) strchr(basis_64, c);
    if (s) return(s-basis_64);
    return(-1);
}
*/

/* the following gets a character, but fakes it properly into two chars if there's a newline character */
static int InNewline=0;

static int
nextcharin (FILE *infile, int PortableNewlines)
{
    int c;

#ifndef NEWLINE_CHAR
    return(getc(infile));
#else
    if (!PortableNewlines) return(getc(infile));
    if (InNewline) {
        InNewline = 0;
        return(10); /* LF */
    }
    c = getc(infile);
    if (c == NEWLINE_CHAR) {
        InNewline = 1;
        return(13); /* CR */
    }
    return(c);
#endif
}

static void
to64(FILE *infile, FILE *outfile, int PortableNewlines) 
{
    int c1, c2, c3, ct=0;
    InNewline = 0; /* always reset it */
    while ((c1 = nextcharin(infile, PortableNewlines)) != EOF) {
        c2 = nextcharin(infile, PortableNewlines);
        if (c2 == EOF) {
            output64chunk(c1, 0, 0, 2, outfile);
        } else {
            c3 = nextcharin(infile, PortableNewlines);
            if (c3 == EOF) {
                output64chunk(c1, c2, 0, 1, outfile);
            } else {
                output64chunk(c1, c2, c3, 0, outfile);
            }
        }
        ct += 4;
        if (ct > 71) {
            putc('\n', outfile);
            ct = 0;
        }
    }
    if (ct) putc('\n', outfile);
    fflush(outfile);
}

static void
output64chunk(int c1, int c2, int c3, int pads, FILE *outfile)
{
    putc(basis_64[c1>>2], outfile);
    putc(basis_64[((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)], outfile);
    if (pads == 2) {
        putc('=', outfile);
        putc('=', outfile);
    } else if (pads) {
        putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
        putc('=', outfile);
    } else {
        putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
        putc(basis_64[c3 & 0x3F], outfile);
    }
}

static int
PendingBoundary(char *s, char **Boundaries, int *BoundaryCt)
{
    int i, len;

    if (s[0] != '-' || s[1] != '-') return(0);


    for (i=0; i < *BoundaryCt; ++i) {
	len = strlen(Boundaries[i]);
        if (!strncmp(s, Boundaries[i], len)) {
            if (s[len] == '-' && s[len+1] == '-') *BoundaryCt = i;
            return(1);
        }
    }
    return(0);
}

/* If we're in portable newline mode, we have to convert CRLF to the 
    local newline convention on output */

static int CRpending = 0;

#ifdef NEWLINE_CHAR
static void
almostputc(int c, FILE *outfile, int PortableNewlines)
{
    if (CRpending) {
        if (c == 10) {
            putc(NEWLINE_CHAR, outfile);
            CRpending = 0;
        } else {
            putc(13, outfile);
	    if (c != 13) {
            	putc(c, outfile);
		CRpending = 0;
	    }
        }
    } else {
        if (PortableNewlines && c == 13) {
            CRpending = 1;
        } else {
            putc(c, outfile);
        }
    }
}
#else
static void
almostputc(int c, FILE *outfile, int PortableNewlines)
{
    putc(c, outfile);
}
#endif

static void
from64(FILE *infile, FILE *outfile,
       char **boundaries, int *boundaryct, int PortableNewlines) 
{
    int c1, c2, c3, c4;
    int newline = 1, DataDone = 0;

    /* always reinitialize */
    CRpending = 0;
    while ((c1 = getc(infile)) != EOF) {
        if (isspace(c1)) {
            if (c1 == '\n') {
                newline = 1;
            } else {
                newline = 0;
            }
            continue;
        }
        if (newline && boundaries && c1 == '-') {
            char Buf[200];
            /* a dash is NOT base 64, so all bets are off if NOT a boundary */
            ungetc(c1, infile);
            fgets(Buf, sizeof(Buf), infile);
            if (boundaries
                 && (Buf[0] == '-')
                 && (Buf[1] == '-')
                 && PendingBoundary(Buf, boundaries, boundaryct)) {
                return;
            }
            fprintf(stderr, "Ignoring unrecognized boundary line: %s\n", Buf);
            continue;
        }
        if (DataDone) continue;
        newline = 0;
        do {
            c2 = getc(infile);
        } while (c2 != EOF && isspace(c2));
        do {
            c3 = getc(infile);
        } while (c3 != EOF && isspace(c3));
        do {
            c4 = getc(infile);
        } while (c4 != EOF && isspace(c4));
        if (c2 == EOF || c3 == EOF || c4 == EOF) {
            fprintf(stderr, "Warning: base64 decoder saw premature EOF!\n");
            return;
        }
        if (c1 == '=' || c2 == '=') {
            DataDone=1;
            continue;
        }
        c1 = char64(c1);
        c2 = char64(c2);
        almostputc(((c1<<2) | ((c2&0x30)>>4)), outfile, PortableNewlines);
        if (c3 == '=') {
            DataDone = 1;
        } else {
            c3 = char64(c3);
            almostputc((((c2&0XF) << 4) | ((c3&0x3C) >> 2)), outfile, PortableNewlines);
            if (c4 == '=') {
                DataDone = 1;
            } else {
                c4 = char64(c4);
                almostputc((((c3&0x03) <<6) | c4), outfile, PortableNewlines);
            }
        }
    }
    if (CRpending) putc(13, outfile); /* Don't drop a lone trailing char 13 */
}

static signed char basis_hex[] = "0123456789ABCDEF";
static signed char index_hex[128] = {
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
     0, 1, 2, 3,  4, 5, 6, 7,  8, 9,-1,-1, -1,-1,-1,-1,
    -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1
};

/* The following version generated complaints on Solaris. */
/* #define hexchar(c)  (((c) < 0 || (c) > 127) ? -1 : index_hex[(c)])  */
/*  Since we're no longer ever calling it with anything signed, this should work: */
#define hexchar(c)  (((c) > 127) ? -1 : index_hex[(c)])

/*
hexchar(c)
char c;
{
    char *s;
    if (islower(c)) c = toupper(c);
    s = (char *) strchr(basis_hex, c);
    if (s) return(s-basis_hex);
    return(-1);
}
*/

static void
toqp(FILE *infile, FILE *outfile) 
{
    int c, ct=0, prevc=255;
    while ((c = getc(infile)) != EOF) {
        if ((c < 32 && (c != '\n' && c != '\t'))
             || (c == '=')
             || (c >= 127)
             /* Following line is to avoid single periods alone on lines,
               which messes up some dumb smtp implementations, sigh... */
             || (ct == 0 && c == '.')) {
            putc('=', outfile);
            putc(basis_hex[c>>4], outfile);
            putc(basis_hex[c&0xF], outfile);
            ct += 3;
            prevc = 'A'; /* close enough */
        } else if (c == '\n') {
            if (prevc == ' ' || prevc == '\t') {
                putc('=', outfile); /* soft & hard lines */
                putc(c, outfile);
            }
            putc(c, outfile);
            ct = 0;
            prevc = c;
        } else {
            if (c == 'F' && prevc == '\n') {
                /* HORRIBLE but clever hack suggested by MTR for sendmail-avoidance */
                c = getc(infile);
                if (c == 'r') {
                    c = getc(infile);
                    if (c == 'o') {
                        c = getc(infile);
                        if (c == 'm') {
                            c = getc(infile);
                            if (c == ' ') {
                                /* This is the case we are looking for */
                                fputs("=46rom", outfile);
                                ct += 6;
                            } else {
                                fputs("From", outfile);
                                ct += 4;
                            }
                        } else {
                            fputs("Fro", outfile);
                            ct += 3;
                        }
                    } else {
                        fputs("Fr", outfile);
                        ct += 2;
                    }
                } else {
                    putc('F', outfile);
                    ++ct;
                }
                ungetc(c, infile);
                prevc = 'x'; /* close enough -- printable */
            } else { /* END horrible hack */
                putc(c, outfile);
                ++ct;
                prevc = c;
            }
        }
        if (ct > 72) {
            putc('=', outfile);
            putc('\n', outfile);
            ct = 0;
            prevc = '\n';
        }
    }
    if (ct) {
        putc('=', outfile);
        putc('\n', outfile);
    }
}

static void
fromqp(FILE *infile, FILE *outfile, char **boundaries, int *boundaryct) 
{
    int c1, c2;
    int sawnewline = 1, neednewline = 0;
    /* The neednewline hack is necessary because the newline leading into 
      a multipart boundary is part of the boundary, not the data */

    while ((c1 = getc(infile)) != EOF) {
        if (sawnewline && boundaries && (c1 == '-')) {
            char Buf[200];
            unsigned char *s;

            ungetc(c1, infile);
            fgets(Buf, sizeof(Buf), infile);
            if (boundaries
                 && (Buf[0] == '-')
                 && (Buf[1] == '-')
                 && PendingBoundary(Buf, boundaries, boundaryct)) {
                return;
            }
            /* Not a boundary, now we must treat THIS line as q-p, sigh */
            if (neednewline) {
                putc('\n', outfile);
                neednewline = 0;
            }
            for (s=(unsigned char *) Buf; *s; ++s) {
                if (*s == '=') {
                    if (!*++s) break;
                    if (*s == '\n') {
                        /* ignore it */
                        sawnewline = 1;
                    } else {
                        c1 = hexchar(*s);
                        if (!*++s) break;
                        c2 = hexchar(*s);
                        putc(c1<<4 | c2, outfile);
                    }
                } else {
#ifdef WIN32_NATIVE
                    if (*s == '\n')
                        putc('\r', outfile);	/* insert CR for binary-mode write */
#endif
                    putc(*s, outfile);
                }
            }
        } else {
            if (neednewline) {
                putc('\n', outfile);
                neednewline = 0;
            }
            if (c1 == '=') {
                sawnewline = 0;
                c1 = getc(infile);
                if (c1 == '\n') {
                    /* ignore it */
                    sawnewline = 1;
                } else {
                    c2 = getc(infile);
                    c1 = hexchar(c1);
                    c2 = hexchar(c2);
                    putc(c1<<4 | c2, outfile);
                    if (c2 == '\n') sawnewline = 1;
                }
            } else {
                if (c1 == '\n') {
                    sawnewline = 1;
                    neednewline = 1;
                } else {
                    sawnewline = 0;
                    putc(c1, outfile);
                }
            }
        }
    }
    if (neednewline) {
        putc('\n', outfile);
        neednewline = 0;
    }    
}


/*
Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)

Permission to use, copy, modify, and distribute this material 
for any purpose and without fee is hereby granted, provided 
that the above copyright notice and this permission notice 
appear in all copies, and that the name of Bellcore not be 
used in advertising or publicity pertaining to this 
material without the specific, prior written permission 
of an authorized representative of Bellcore.  BELLCORE 
MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY 
OF THIS MATERIAL FOR ANY PURPOSE.  IT IS PROVIDED "AS IS", 
WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
*/
#ifdef WIN32_NATIVE
#include <io.h>
#include <fcntl.h>
#endif

#define BASE64 1
#define QP 2 /* quoted-printable */

int main(int argc, char *argv[])
{
    int encode = 1, which = BASE64, i, portablenewlines = 0;
    FILE *fp = stdin;
    FILE *fpo = stdout;

    for (i=1; i<argc; ++i) {
        if (argv[i][0] == '-') {
	    switch (argv[i][1]) {
		case 'o':
		    if (++i >= argc) {
			fprintf(stderr, "mimencode: -o requires a file name.\n");
			exit(-1);
		    }
		    fpo = fopen(argv[i], "w");
		    if (!fpo) {
			perror(argv[i]);
			exit(-1);
		    }
		    break;
                case 'u':
                    encode = 0;
                    break;
                case 'q':
                    which = QP;
                    break;
                case 'p':
                    portablenewlines = 1;
                    break;
                case 'b':
                    which = BASE64;
                    break;
		default:
                    fprintf(stderr,
                       "Usage: mmencode [-u] [-q] [-b] [-p] [-o outputfile] [file name]\n");
                    exit(-1);
            }
        } else {
#ifdef WIN32_NATIVE
            if (encode)
                fp = fopen(argv[i], "rb");
            else
            {
                fp = fopen(argv[i], "rt");
                setmode(fileno(fpo), O_BINARY);
            } /* else */
#else
            fp = fopen(argv[i], "r");
#endif /* WIN32_NATIVE */
            if (!fp) {
                perror(argv[i]);
                exit(-1);
            }
        }
    }
#ifdef WIN32_NATIVE
    if (fp == stdin) setmode(fileno(fp), O_BINARY);
#endif /* WIN32_NATIVE */
    if (which == BASE64) {
        if (encode) {
            to64(fp, fpo, portablenewlines);
        } else {
            from64(fp,fpo, (char **) NULL, (int *) 0, portablenewlines);
        }
    } else {
        if (encode) toqp(fp, fpo); else fromqp(fp, fpo, NULL, 0);
    }
    return(0);
}