This commit was manufactured by cvs2svn to create branch 'chise-r21-4-18'.
[chise/xemacs-chise.git-] / src / xmu.c
diff --git a/src/xmu.c b/src/xmu.c
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--- /dev/null
+++ b/src/xmu.c
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+/* This file contains compatibility routines for systems without Xmu.
+ * You would be better served by installing Xmu on your machine or
+ * yelling at your vendor to ship it.
+ */
+
+/* XEmacs changes: rindex -> strrchr */
+
+/* Synched up with: Not in FSF. */
+
+#include <config.h>
+
+#ifndef HAVE_XMU
+/*
+ * Copyright 1989 Massachusetts Institute of Technology
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.  M.I.T. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <X11/cursorfont.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Intrinsic.h>
+
+/* for XmuCopyISOLatin1Lowered */
+#define XK_LATIN1
+#include <X11/keysymdef.h>
+#undef XK_LATIN1
+
+#if (XtSpecificationRelease >= 5)
+/*
+ * Don't know why, but this works with X11R5, not X11R4.
+ * Anyway, _XExtension is defined in Xlib.h in X11R4, so we do not need
+ * Xlibint in that case...
+ */
+#include <X11/Xlibint.h>
+#endif
+#include <X11/Xproto.h>
+#include <stdio.h>
+#include <ctype.h>
+
+
+int XmuCursorNameToIndex (const char *name)
+{
+    static const struct _CursorName {
+       const char      *name;
+       unsigned int    shape;
+    } cursor_names[] = {
+                       {"x_cursor",            XC_X_cursor},
+                       {"arrow",               XC_arrow},
+                       {"based_arrow_down",    XC_based_arrow_down},
+                       {"based_arrow_up",      XC_based_arrow_up},
+                       {"boat",                XC_boat},
+                       {"bogosity",            XC_bogosity},
+                       {"bottom_left_corner",  XC_bottom_left_corner},
+                       {"bottom_right_corner", XC_bottom_right_corner},
+                       {"bottom_side",         XC_bottom_side},
+                       {"bottom_tee",          XC_bottom_tee},
+                       {"box_spiral",          XC_box_spiral},
+                       {"center_ptr",          XC_center_ptr},
+                       {"circle",              XC_circle},
+                       {"clock",               XC_clock},
+                       {"coffee_mug",          XC_coffee_mug},
+                       {"cross",               XC_cross},
+                       {"cross_reverse",       XC_cross_reverse},
+                       {"crosshair",           XC_crosshair},
+                       {"diamond_cross",       XC_diamond_cross},
+                       {"dot",                 XC_dot},
+                       {"dotbox",              XC_dotbox},
+                       {"double_arrow",        XC_double_arrow},
+                       {"draft_large",         XC_draft_large},
+                       {"draft_small",         XC_draft_small},
+                       {"draped_box",          XC_draped_box},
+                       {"exchange",            XC_exchange},
+                       {"fleur",               XC_fleur},
+                       {"gobbler",             XC_gobbler},
+                       {"gumby",               XC_gumby},
+                       {"hand1",               XC_hand1},
+                       {"hand2",               XC_hand2},
+                       {"heart",               XC_heart},
+                       {"icon",                XC_icon},
+                       {"iron_cross",          XC_iron_cross},
+                       {"left_ptr",            XC_left_ptr},
+                       {"left_side",           XC_left_side},
+                       {"left_tee",            XC_left_tee},
+                       {"leftbutton",          XC_leftbutton},
+                       {"ll_angle",            XC_ll_angle},
+                       {"lr_angle",            XC_lr_angle},
+                       {"man",                 XC_man},
+                       {"middlebutton",        XC_middlebutton},
+                       {"mouse",               XC_mouse},
+                       {"pencil",              XC_pencil},
+                       {"pirate",              XC_pirate},
+                       {"plus",                XC_plus},
+                       {"question_arrow",      XC_question_arrow},
+                       {"right_ptr",           XC_right_ptr},
+                       {"right_side",          XC_right_side},
+                       {"right_tee",           XC_right_tee},
+                       {"rightbutton",         XC_rightbutton},
+                       {"rtl_logo",            XC_rtl_logo},
+                       {"sailboat",            XC_sailboat},
+                       {"sb_down_arrow",       XC_sb_down_arrow},
+                       {"sb_h_double_arrow",   XC_sb_h_double_arrow},
+                       {"sb_left_arrow",       XC_sb_left_arrow},
+                       {"sb_right_arrow",      XC_sb_right_arrow},
+                       {"sb_up_arrow",         XC_sb_up_arrow},
+                       {"sb_v_double_arrow",   XC_sb_v_double_arrow},
+                       {"shuttle",             XC_shuttle},
+                       {"sizing",              XC_sizing},
+                       {"spider",              XC_spider},
+                       {"spraycan",            XC_spraycan},
+                       {"star",                XC_star},
+                       {"target",              XC_target},
+                       {"tcross",              XC_tcross},
+                       {"top_left_arrow",      XC_top_left_arrow},
+                       {"top_left_corner",     XC_top_left_corner},
+                       {"top_right_corner",    XC_top_right_corner},
+                       {"top_side",            XC_top_side},
+                       {"top_tee",             XC_top_tee},
+                       {"trek",                XC_trek},
+                       {"ul_angle",            XC_ul_angle},
+                       {"umbrella",            XC_umbrella},
+                       {"ur_angle",            XC_ur_angle},
+                       {"watch",               XC_watch},
+                       {"xterm",               XC_xterm},
+    };
+    const struct _CursorName *table;
+    int i;
+    char tmp[40];
+
+    if (strlen (name) >= sizeof tmp) return -1;
+    for (i=0; i<strlen(name); i++)
+        if (isupper((unsigned char) name[i]))
+            tmp[i] = tolower((unsigned char) name[i]);
+        else
+            tmp[i] = name[i];
+    tmp[i] = 0;
+
+    for (i=0, table=cursor_names; i < XtNumber(cursor_names); i++, table++ ) {
+       if (strcmp(tmp, table->name) == 0) return table->shape;
+    }
+
+    return -1;
+}
+
+
+/*
+ * Based on an optimized version provided by Jim Becker, August 5, 1988.
+ */
+
+
+#define MAX_SIZE 255
+
+/* shared data for the image read/parse logic */
+static short hexTable[256];            /* conversion value */
+static int hex_initialized;    /* easier to fill in at run time */
+
+
+/*
+ *     Table index for the hex values. Initialized once, first time.
+ *     Used for translation value or delimiter significance lookup.
+ */
+static void initHexTable (void)
+{
+    /*
+     * We build the table at run time for several reasons:
+     *
+     *     1.  portable to non-ASCII machines.
+     *     2.  still reentrant since we set the init flag after setting table.
+     *     3.  easier to extend.
+     *     4.  less prone to bugs.
+     */
+    hexTable['0'] = 0; hexTable['1'] = 1;
+    hexTable['2'] = 2; hexTable['3'] = 3;
+    hexTable['4'] = 4; hexTable['5'] = 5;
+    hexTable['6'] = 6; hexTable['7'] = 7;
+    hexTable['8'] = 8; hexTable['9'] = 9;
+    hexTable['A'] = 10;        hexTable['B'] = 11;
+    hexTable['C'] = 12;        hexTable['D'] = 13;
+    hexTable['E'] = 14;        hexTable['F'] = 15;
+    hexTable['a'] = 10;        hexTable['b'] = 11;
+    hexTable['c'] = 12;        hexTable['d'] = 13;
+    hexTable['e'] = 14;        hexTable['f'] = 15;
+
+    /* delimiters of significance are flagged w/ negative value */
+    hexTable[' '] = -1;        hexTable[','] = -1;
+    hexTable['}'] = -1;        hexTable['\n'] = -1;
+    hexTable['\t'] = -1;
+
+    hex_initialized = 1;
+}
+
+/*
+ *     read next hex value in the input stream, return -1 if EOF
+ */
+static int NextInt (FILE *fstream)
+{
+    int        ch;
+    int        value = 0;
+    int gotone = 0;
+    int done = 0;
+
+    /* loop, accumulate hex value until find delimiter  */
+    /* skip any initial delimiters found in read stream */
+
+    while (!done) {
+       ch = getc(fstream);
+       if (ch == EOF) {
+           value       = -1;
+           done++;
+       } else {
+           /* trim high bits, check type and accumulate */
+           ch &= 0xff;
+           if (isascii(ch) && isxdigit(ch)) {
+               value = (value << 4) + hexTable[ch];
+               gotone++;
+           } else if ((hexTable[ch]) < 0 && gotone)
+             done++;
+       }
+    }
+    return value;
+}
+
+
+/*
+ * The data returned by the following routine is always in left-most byte
+ * first and left-most bit first.  If it doesn't return BitmapSuccess then
+ * its arguments won't have been touched.  This routine should look as much
+ * like the Xlib routine XReadBitmapfile as possible.
+ */
+int XmuReadBitmapData (
+    FILE *fstream,                     /* handle on file  */
+    unsigned int *width,               /* RETURNED */
+    unsigned int *height,              /* RETURNED */
+    unsigned char **datap,             /* RETURNED */
+    int *x_hot, int *y_hot)            /* RETURNED */
+{
+    unsigned char *data = NULL;                /* working variable */
+    char line[MAX_SIZE];               /* input line from file */
+    int size;                          /* number of bytes of data */
+    char name_and_type[MAX_SIZE];      /* an input line */
+    char *type;                                /* for parsing */
+    int value;                         /* from an input line */
+    int version10p;                    /* boolean, old format */
+    int padding;                       /* to handle alignment */
+    int bytes_per_line;                        /* per scanline of data */
+    unsigned int ww = 0;               /* width */
+    unsigned int hh = 0;               /* height */
+    int hx = -1;                       /* x hotspot */
+    int hy = -1;                       /* y hotspot */
+
+#ifndef Xmalloc
+#define Xmalloc(size) malloc(size)
+#endif
+
+    /* first time initialization */
+    if (!hex_initialized) initHexTable();
+
+    /* error cleanup and return macro  */
+#define        RETURN(code) { if (data) free (data); return code; }
+
+    while (fgets(line, MAX_SIZE, fstream)) {
+       if (strlen(line) == MAX_SIZE-1) {
+           RETURN (BitmapFileInvalid);
+       }
+       if (sscanf(line,"#define %s %d",name_and_type,&value) == 2) {
+           if (!(type = strrchr(name_and_type, '_')))
+             type = name_and_type;
+           else
+             type++;
+
+           if (!strcmp("width", type))
+             ww = (unsigned int) value;
+           if (!strcmp("height", type))
+             hh = (unsigned int) value;
+           if (!strcmp("hot", type)) {
+               if (type-- == name_and_type || type-- == name_and_type)
+                 continue;
+               if (!strcmp("x_hot", type))
+                 hx = value;
+               if (!strcmp("y_hot", type))
+                 hy = value;
+           }
+           continue;
+       }
+
+       if (sscanf(line, "static short %s = {", name_and_type) == 1)
+         version10p = 1;
+       else if (sscanf(line,"static unsigned char %s = {",name_and_type) == 1)
+         version10p = 0;
+       else if (sscanf(line, "static char %s = {", name_and_type) == 1)
+         version10p = 0;
+       else
+         continue;
+
+       if (!(type = strrchr(name_and_type, '_')))
+         type = name_and_type;
+       else
+         type++;
+
+       if (strcmp("bits[]", type))
+         continue;
+
+       if (!ww || !hh)
+         RETURN (BitmapFileInvalid);
+
+       if ((ww % 16) && ((ww % 16) < 9) && version10p)
+         padding = 1;
+       else
+         padding = 0;
+
+       bytes_per_line = (ww+7)/8 + padding;
+
+       size = bytes_per_line * hh;
+       data = (unsigned char *) Xmalloc ((unsigned int) size);
+       if (!data)
+         RETURN (BitmapNoMemory);
+
+       if (version10p) {
+           unsigned char *ptr;
+           int bytes;
+
+           for (bytes=0, ptr=data; bytes<size; (bytes += 2)) {
+               if ((value = NextInt(fstream)) < 0)
+                 RETURN (BitmapFileInvalid);
+               *(ptr++) = value;
+               if (!padding || ((bytes+2) % bytes_per_line))
+                 *(ptr++) = value >> 8;
+           }
+       } else {
+           unsigned char *ptr;
+           int bytes;
+
+           for (bytes=0, ptr=data; bytes<size; bytes++, ptr++) {
+               if ((value = NextInt(fstream)) < 0)
+                 RETURN (BitmapFileInvalid);
+               *ptr=value;
+           }
+       }
+       break;
+    }                                  /* end while */
+
+    if (data == NULL) {
+       RETURN (BitmapFileInvalid);
+    }
+
+    *datap = data;
+    data = NULL;
+    *width = ww;
+    *height = hh;
+    if (x_hot) *x_hot = hx;
+    if (y_hot) *y_hot = hy;
+
+    RETURN (BitmapSuccess);
+}
+
+
+int XmuReadBitmapDataFromFile (const char *filename,
+                              /* Remaining args are RETURNED */
+                              unsigned int *width,
+                              unsigned int *height,
+                              unsigned char **datap,
+                              int *x_hot, int *y_hot)
+{
+    FILE *fstream;
+    int status;
+
+    if ((fstream = fopen (filename, "r")) == NULL) {
+       return BitmapOpenFailed;
+    }
+    status = XmuReadBitmapData (fstream, width, height, datap, x_hot, y_hot);
+    fclose (fstream);
+    return status;
+}
+
+/*
+ * XmuPrintDefaultErrorMessage - print a nice error that looks like the usual
+ * message.  Return 1 if the caller should consider exiting, else 0.
+ */
+int XmuPrintDefaultErrorMessage (Display *dpy, XErrorEvent *event, FILE *fp)
+{
+    char buffer[BUFSIZ];
+    char mesg[BUFSIZ];
+    char number[32];
+    char *mtype = "XlibMessage";
+    _XExtension *ext = (_XExtension *)NULL;
+    XGetErrorText(dpy, event->error_code, buffer, BUFSIZ);
+    XGetErrorDatabaseText(dpy, mtype, "XError", "X Error", mesg, BUFSIZ);
+    fprintf(fp, "%s:  %s\n  ", mesg, buffer);
+    XGetErrorDatabaseText(dpy, mtype, "MajorCode", "Request Major code %d",
+       mesg, BUFSIZ);
+    fprintf(fp, mesg, event->request_code);
+    if (event->request_code < 128) {
+       sprintf(number, "%d", event->request_code);
+       XGetErrorDatabaseText(dpy, "XRequest", number, "", buffer, BUFSIZ);
+    } else {
+       /* XXX this is non-portable */
+       for (ext = dpy->ext_procs;
+            ext && (ext->codes.major_opcode != event->request_code);
+            ext = ext->next)
+         ;
+       if (ext)
+           strcpy(buffer, ext->name);
+       else
+           buffer[0] = '\0';
+    }
+    fprintf(fp, " (%s)", buffer);
+    fputs("\n  ", fp);
+#if (XtSpecificationRelease >= 5)
+    if (event->request_code >= 128) {
+       XGetErrorDatabaseText(dpy, mtype, "MinorCode", "Request Minor code %d",
+                             mesg, BUFSIZ);
+       fprintf(fp, mesg, event->minor_code);
+       if (ext) {
+           sprintf(mesg, "%s.%d", ext->name, event->minor_code);
+           XGetErrorDatabaseText(dpy, "XRequest", mesg, "", buffer, BUFSIZ);
+           fprintf(fp, " (%s)", buffer);
+       }
+       fputs("\n  ", fp);
+    }
+    if (event->error_code >= 128) {
+       /* let extensions try to print the values */
+       /* XXX this is non-portable code */
+       for (ext = dpy->ext_procs; ext; ext = ext->next) {
+           if (ext->error_values)
+               (*ext->error_values)(dpy, event, fp);
+       }
+       /* the rest is a fallback, providing a simple default */
+       /* kludge, try to find the extension that caused it */
+       buffer[0] = '\0';
+       for (ext = dpy->ext_procs; ext; ext = ext->next) {
+           if (ext->error_string)
+               (*ext->error_string)(dpy, event->error_code, &ext->codes,
+                                    buffer, BUFSIZ);
+           if (buffer[0])
+               break;
+       }
+       if (buffer[0])
+           sprintf(buffer, "%s.%d", ext->name,
+                   event->error_code - ext->codes.first_error);
+       else
+           strcpy(buffer, "Value");
+       XGetErrorDatabaseText(dpy, mtype, buffer, "", mesg, BUFSIZ);
+       if (*mesg) {
+           fprintf(fp, mesg, event->resourceid);
+           fputs("\n  ", fp);
+       }
+    } else if ((event->error_code == BadWindow) ||
+              (event->error_code == BadPixmap) ||
+              (event->error_code == BadCursor) ||
+              (event->error_code == BadFont) ||
+              (event->error_code == BadDrawable) ||
+              (event->error_code == BadColor) ||
+              (event->error_code == BadGC) ||
+              (event->error_code == BadIDChoice) ||
+              (event->error_code == BadValue) ||
+              (event->error_code == BadAtom)) {
+       if (event->error_code == BadValue)
+           XGetErrorDatabaseText(dpy, mtype, "Value", "Value 0x%x",
+                                 mesg, BUFSIZ);
+       else if (event->error_code == BadAtom)
+           XGetErrorDatabaseText(dpy, mtype, "AtomID", "AtomID 0x%x",
+                                 mesg, BUFSIZ);
+       else
+           XGetErrorDatabaseText(dpy, mtype, "ResourceID", "ResourceID 0x%x",
+                                 mesg, BUFSIZ);
+       fprintf(fp, mesg, event->resourceid);
+       fputs("\n  ", fp);
+    }
+#elif (XtSpecificationRelease == 4)
+    XGetErrorDatabaseText(dpy, mtype, "MinorCode", "Request Minor code %d",
+                         mesg, BUFSIZ);
+    fprintf(fp, mesg, event->minor_code);
+    fputs("\n  ", fp);
+    if (ext) {
+      sprintf(mesg, "%s.%d", ext->name, event->minor_code);
+      XGetErrorDatabaseText(dpy, "XRequest", mesg, "", buffer, BUFSIZ);
+      fprintf(fp, " (%s)", buffer);
+    }
+    XGetErrorDatabaseText(dpy, mtype, "ResourceID", "ResourceID 0x%x",
+                         mesg, BUFSIZ);
+    fprintf(fp, mesg, event->resourceid);
+    fputs("\n  ", fp);
+#else
+ERROR! Unsupported release of X11
+#endif
+    XGetErrorDatabaseText(dpy, mtype, "ErrorSerial", "Error Serial #%d",
+       mesg, BUFSIZ);
+    fprintf(fp, mesg, event->serial);
+    fputs("\n  ", fp);
+    XGetErrorDatabaseText(dpy, mtype, "CurrentSerial", "Current Serial #%d",
+       mesg, BUFSIZ);
+    fprintf(fp, mesg, NextRequest(dpy)-1);
+    fputs("\n", fp);
+    if (event->error_code == BadImplementation) return 0;
+    return 1;
+}
+
+
+/*
+ * XmuSimpleErrorHandler - ignore errors for XQueryTree, XGetWindowAttributes,
+ * and XGetGeometry; print a message for everything else.  In all case, do
+ * not exit.
+ */
+int XmuSimpleErrorHandler (Display *dpy, XErrorEvent *errorp)
+{
+    switch (errorp->request_code) {
+      case X_QueryTree:
+      case X_GetWindowAttributes:
+        if (errorp->error_code == BadWindow) return 0;
+       break;
+      case X_GetGeometry:
+       if (errorp->error_code == BadDrawable) return 0;
+       break;
+    }
+    /* got a "real" X error */
+    return XmuPrintDefaultErrorMessage (dpy, errorp, stderr);
+}
+
+void XmuCopyISOLatin1Lowered(char *dst, const char *src)
+{
+    unsigned char *dest   = (unsigned char *) dst;
+    unsigned char *source = (unsigned char *) src;
+
+    for ( ; *source; source++, dest++)
+    {
+        if ((*source >= XK_A) && (*source <= XK_Z))
+            *dest = *source + (XK_a - XK_A);
+        else if ((*source >= XK_Agrave) && (*source <= XK_Odiaeresis))
+            *dest = *source + (XK_agrave - XK_Agrave);
+        else if ((*source >= XK_Ooblique) && (*source <= XK_Thorn))
+            *dest = *source + (XK_oslash - XK_Ooblique);
+        else
+            *dest = *source;
+    }
+    *dest = '\0';
+}
+#endif /* !HAVE_XMU */