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Further frame-geometry cleanups -------------------- ChangeLog entries follow: -------------------- man/ChangeLog addition: 2010-03-03 Ben Wing <ben@xemacs.org> * internals/internals.texi (Intro to Window and Frame Geometry): * internals/internals.texi (The Paned Area): * internals/internals.texi (The Displayable Area): Update to make note of e.g. the fact that the bottom gutter is actually above the minibuffer. src/ChangeLog addition: 2010-03-03 Ben Wing <ben@xemacs.org> * emacs.c: * emacs.c (assert_equal_failed): * lisp.h: * lisp.h (assert_equal): New fun assert_equal, asserting that two values == each other, and printing out both values upon failure. * frame-gtk.c (gtk_initialize_frame_size): * frame-impl.h: * frame-impl.h (FRAME_TOP_INTERNAL_BORDER_START): * frame-impl.h (FRAME_BOTTOM_INTERNAL_BORDER_START): * frame-impl.h (FRAME_LEFT_INTERNAL_BORDER_START): * frame-impl.h (FRAME_PANED_TOP_EDGE): * frame-impl.h (FRAME_NONPANED_SIZE): * frame-x.c (x_initialize_frame_size): * frame.c: * gutter.c (get_gutter_coords): * gutter.c (calculate_gutter_size): * gutter.h: * gutter.h (WINDOW_REAL_TOP_GUTTER_BOUNDS): * gutter.h (FRAME_TOP_GUTTER_BOUNDS): * input-method-xlib.c: * input-method-xlib.c (XIM_SetGeometry): * redisplay-output.c (clear_left_border): * redisplay-output.c (clear_right_border): * redisplay-output.c (redisplay_output_pixmap): * redisplay-output.c (redisplay_clear_region): * redisplay-output.c (redisplay_clear_top_of_window): * redisplay-output.c (redisplay_clear_to_window_end): * redisplay-xlike-inc.c (XLIKE_clear_frame): * redisplay.c: * redisplay.c (UPDATE_CACHE_RETURN): * redisplay.c (pixel_to_glyph_translation): * toolbar.c (update_frame_toolbars_geometry): * window.c (Fwindow_pixel_edges): Get rid of some redundant macros. Consistently use the FRAME_TOP_*_START, FRAME_RIGHT_*_END, etc. format. Rename FRAME_*_BORDER_* to FRAME_*_INTERNAL_BORDER_*. Comment out FRAME_BOTTOM_* for gutters and the paned area due to the uncertainty over where the paned area actually begins. (Eventually we should probably move the gutters outside the minibuffer so that the paned area is contiguous.) Use FRAME_PANED_* more often in the code to make things clearer. Update the diagram to show that the bottom gutter is inside the minibuffer (!) and that there are "junk boxes" when you have left and/or right gutters (dead boxes that are mistakenly left uncleared, unlike the corresponding scrollbar dead boxes). Update the text appropriately to cover the bottom gutter position, etc. Rewrite gutter-geometry code to use the FRAME_*_GUTTER_* in place of equivalent expressions referencing other frame elements, to make the code more portable in case we move around the gutter location. Cleanup FRAME_*_GUTTER_BOUNDS() in gutter.h. Add some #### GEOM! comments where I think code is incorrect -- typically, it wasn't fixed up properly when the gutter was added. Some cosmetic changes.
author Ben Wing <ben@xemacs.org>
date Wed, 03 Mar 2010 05:07:47 -0600
parents 49316578f12d
children
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.
*/

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#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);
}