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/*
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Copyright 1988, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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/*
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* This file contains miscellaneous utility routines and is not part of the
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* Xlib standard.
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*
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* Public entry points:
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*
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* XmuReadBitmapData read data from FILE descriptor
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* XmuReadBitmapDataFromFile read X10 or X11 format bitmap files
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* and return data
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*
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* Note that this file and ../X/XRdBitF.c look very similar.... Keep them
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* that way (but don't use common source code so that people can have one
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* without the other).
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*/
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/*
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* Based on an optimized version provided by Jim Becker, Auguest 5, 1988.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <X11/Xos.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xlibint.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <X11/Xmu/Drawing.h>
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#ifdef WIN32
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#include <X11/Xwindows.h>
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#include <direct.h> /* for _getdrives() */
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#endif
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#define MAX_SIZE 255
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/*
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* Prototypes
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*/
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static void initHexTable(void);
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static int NextInt(FILE*);
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/* shared data for the image read/parse logic */
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static short hexTable[256]; /* conversion value */
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static Bool initialized = False; /* easier to fill in at run time */
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/*
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* Table index for the hex values. Initialized once, first time.
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* Used for translation value or delimiter significance lookup.
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*/
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static void
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initHexTable(void)
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{
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/*
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* We build the table at run time for several reasons:
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*
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* 1. portable to non-ASCII machines.
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* 2. still reentrant since we set the init flag after setting table.
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* 3. easier to extend.
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* 4. less prone to bugs.
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*/
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hexTable['0'] = 0; hexTable['1'] = 1;
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hexTable['2'] = 2; hexTable['3'] = 3;
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hexTable['4'] = 4; hexTable['5'] = 5;
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hexTable['6'] = 6; hexTable['7'] = 7;
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hexTable['8'] = 8; hexTable['9'] = 9;
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hexTable['A'] = 10; hexTable['B'] = 11;
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hexTable['C'] = 12; hexTable['D'] = 13;
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hexTable['E'] = 14; hexTable['F'] = 15;
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hexTable['a'] = 10; hexTable['b'] = 11;
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hexTable['c'] = 12; hexTable['d'] = 13;
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hexTable['e'] = 14; hexTable['f'] = 15;
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/* delimiters of significance are flagged w/ negative value */
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hexTable[' '] = -1; hexTable[','] = -1;
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hexTable['}'] = -1; hexTable['\n'] = -1;
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hexTable['\t'] = -1;
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initialized = True;
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}
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/*
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* read next hex value in the input stream, return -1 if EOF
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*/
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static int
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NextInt(FILE *fstream)
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{
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int ch;
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int value = 0;
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int gotone = 0;
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int done = 0;
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/* loop, accumulate hex value until find delimiter */
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/* skip any initial delimiters found in read stream */
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while (!done) {
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ch = getc(fstream);
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if (ch == EOF) {
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value = -1;
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done++;
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} else {
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/* trim high bits, check type and accumulate */
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ch &= 0xff;
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if (isascii(ch) && isxdigit(ch)) {
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value = (value << 4) + hexTable[ch];
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gotone++;
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} else if ((hexTable[ch]) < 0 && gotone)
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done++;
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}
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}
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return value;
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}
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/*
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* The data returned by the following routine is always in left-most byte
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* first and left-most bit first. If it doesn't return BitmapSuccess then
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* its arguments won't have been touched. This routine should look as much
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* like the Xlib routine XReadBitmapfile as possible.
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*/
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int
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XmuReadBitmapData(FILE *fstream, unsigned int *width, unsigned int *height,
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unsigned char **datap, int *x_hot, int *y_hot)
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{
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unsigned char *data = NULL; /* working variable */
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char line[MAX_SIZE]; /* input line from file */
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int size; /* number of bytes of data */
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char name_and_type[MAX_SIZE]; /* an input line */
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char *type; /* for parsing */
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int value; /* from an input line */
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int version10p; /* boolean, old format */
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int padding; /* to handle alignment */
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int bytes_per_line; /* per scanline of data */
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unsigned int ww = 0; /* width */
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unsigned int hh = 0; /* height */
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int hx = -1; /* x hotspot */
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int hy = -1; /* y hotspot */
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#undef Xmalloc /* see MALLOC_0_RETURNS_NULL in Xlibint.h */
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#define Xmalloc(size) malloc(size)
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/* first time initialization */
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if (initialized == False) initHexTable();
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/* error cleanup and return macro */
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#define RETURN(code) { if (data) free (data); return code; }
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while (fgets(line, MAX_SIZE, fstream)) {
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if (strlen(line) == MAX_SIZE-1) {
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RETURN (BitmapFileInvalid);
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}
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if (sscanf(line,"#define %s %d",name_and_type,&value) == 2) {
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if (!(type = strrchr(name_and_type, '_')))
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type = name_and_type;
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else
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type++;
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if (!strcmp("width", type))
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ww = (unsigned int) value;
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if (!strcmp("height", type))
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hh = (unsigned int) value;
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if (!strcmp("hot", type)) {
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if (type-- == name_and_type || type-- == name_and_type)
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continue;
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if (!strcmp("x_hot", type))
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hx = value;
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if (!strcmp("y_hot", type))
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hy = value;
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}
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continue;
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}
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if (sscanf(line, "static short %s = {", name_and_type) == 1)
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version10p = 1;
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else if (sscanf(line,"static unsigned char %s = {",name_and_type) == 1)
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version10p = 0;
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else if (sscanf(line, "static char %s = {", name_and_type) == 1)
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version10p = 0;
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else
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continue;
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if (!(type = strrchr(name_and_type, '_')))
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type = name_and_type;
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else
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type++;
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if (strcmp("bits[]", type))
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continue;
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if (!ww || !hh)
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RETURN (BitmapFileInvalid);
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if ((ww % 16) && ((ww % 16) < 9) && version10p)
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padding = 1;
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else
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padding = 0;
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bytes_per_line = (ww+7)/8 + padding;
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size = bytes_per_line * hh;
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data = (unsigned char *) Xmalloc ((unsigned int) size);
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if (!data)
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RETURN (BitmapNoMemory);
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if (version10p) {
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unsigned char *ptr;
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int bytes;
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for (bytes=0, ptr=data; bytes
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if ((value = NextInt(fstream)) < 0)
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RETURN (BitmapFileInvalid);
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*(ptr++) = value;
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if (!padding || ((bytes+2) % bytes_per_line))
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*(ptr++) = value >> 8;
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}
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} else {
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unsigned char *ptr;
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int bytes;
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for (bytes=0, ptr=data; bytes
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if ((value = NextInt(fstream)) < 0)
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RETURN (BitmapFileInvalid);
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*ptr=value;
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}
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}
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2b1f13 |
break;
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2b1f13 |
} /* end while */
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2b1f13 |
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Packit Service |
2b1f13 |
if (data == NULL) {
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RETURN (BitmapFileInvalid);
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}
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*datap = data;
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data = NULL;
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*width = ww;
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*height = hh;
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if (x_hot) *x_hot = hx;
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2b1f13 |
if (y_hot) *y_hot = hy;
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2b1f13 |
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2b1f13 |
RETURN (BitmapSuccess);
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}
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2b1f13 |
#if defined(WIN32)
|
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static int
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access_file(char *path, char *pathbuf, int len_pathbuf, char **pathret)
|
|
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{
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2b1f13 |
if (access (path, F_OK) == 0) {
|
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2b1f13 |
if (strlen (path) < len_pathbuf)
|
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2b1f13 |
*pathret = pathbuf;
|
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2b1f13 |
else
|
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Packit Service |
2b1f13 |
*pathret = malloc (strlen (path) + 1);
|
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Packit Service |
2b1f13 |
if (*pathret) {
|
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Packit Service |
2b1f13 |
strcpy (*pathret, path);
|
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Packit Service |
2b1f13 |
return 1;
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2b1f13 |
}
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Packit Service |
2b1f13 |
}
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Packit Service |
2b1f13 |
return 0;
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2b1f13 |
}
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2b1f13 |
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2b1f13 |
static int
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2b1f13 |
AccessFile(char *path, char *pathbuf, int len_pathbuf, char **pathret)
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2b1f13 |
{
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2b1f13 |
#ifndef MAX_PATH
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2b1f13 |
#define MAX_PATH 512
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2b1f13 |
#endif
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2b1f13 |
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2b1f13 |
unsigned long drives;
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2b1f13 |
int i, len;
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2b1f13 |
char* drive;
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2b1f13 |
char buf[MAX_PATH];
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2b1f13 |
char* bufp;
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2b1f13 |
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2b1f13 |
/* just try the "raw" name first and see if it works */
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2b1f13 |
if (access_file (path, pathbuf, len_pathbuf, pathret))
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2b1f13 |
return 1;
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2b1f13 |
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2b1f13 |
/* try the places set in the environment */
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2b1f13 |
drive = getenv ("_XBASEDRIVE");
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2b1f13 |
if (!drive)
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2b1f13 |
drive = "C:";
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2b1f13 |
len = strlen (drive) + strlen (path);
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2b1f13 |
if (len < MAX_PATH) bufp = buf;
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2b1f13 |
else bufp = malloc (len + 1);
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2b1f13 |
strcpy (bufp, drive);
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2b1f13 |
strcat (bufp, path);
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2b1f13 |
if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
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2b1f13 |
if (bufp != buf) free (bufp);
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2b1f13 |
return 1;
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2b1f13 |
}
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2b1f13 |
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Packit Service |
2b1f13 |
/* one last place to look */
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2b1f13 |
drive = getenv ("HOMEDRIVE");
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2b1f13 |
if (drive) {
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2b1f13 |
len = strlen (drive) + strlen (path);
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2b1f13 |
if (len < MAX_PATH) bufp = buf;
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2b1f13 |
else bufp = malloc (len + 1);
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2b1f13 |
strcpy (bufp, drive);
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2b1f13 |
strcat (bufp, path);
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2b1f13 |
if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
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Packit Service |
2b1f13 |
if (bufp != buf) free (bufp);
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2b1f13 |
return 1;
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2b1f13 |
}
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2b1f13 |
}
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Packit Service |
2b1f13 |
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2b1f13 |
/* does OS/2 (with or with gcc-emx) have getdrives? */
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2b1f13 |
/* tried everywhere else, go fishing */
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2b1f13 |
#define C_DRIVE ('C' - 'A')
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2b1f13 |
#define Z_DRIVE ('Z' - 'A')
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2b1f13 |
drives = _getdrives ();
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2b1f13 |
for (i = C_DRIVE; i <= Z_DRIVE; i++) { /* don't check on A: or B: */
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2b1f13 |
if ((1 << i) & drives) {
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2b1f13 |
len = 2 + strlen (path);
|
|
Packit Service |
2b1f13 |
if (len < MAX_PATH) bufp = buf;
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|
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2b1f13 |
else bufp = malloc (len + 1);
|
|
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2b1f13 |
*bufp = 'A' + i;
|
|
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2b1f13 |
*(bufp + 1) = ':';
|
|
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2b1f13 |
*(bufp + 2) = '\0';
|
|
Packit Service |
2b1f13 |
strcat (bufp, path);
|
|
Packit Service |
2b1f13 |
if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
|
|
Packit Service |
2b1f13 |
if (bufp != buf) free (bufp);
|
|
Packit Service |
2b1f13 |
return 1;
|
|
Packit Service |
2b1f13 |
}
|
|
Packit Service |
2b1f13 |
}
|
|
Packit Service |
2b1f13 |
}
|
|
Packit Service |
2b1f13 |
return 0;
|
|
Packit Service |
2b1f13 |
}
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
FILE *
|
|
Packit Service |
2b1f13 |
fopen_file(char *path, char *mode)
|
|
Packit Service |
2b1f13 |
{
|
|
Packit Service |
2b1f13 |
char buf[MAX_PATH];
|
|
Packit Service |
2b1f13 |
char* bufp;
|
|
Packit Service |
2b1f13 |
void* ret = NULL;
|
|
Packit Service |
2b1f13 |
UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS);
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
if (AccessFile (path, buf, MAX_PATH, &bufp))
|
|
Packit Service |
2b1f13 |
ret = fopen (bufp, mode);
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
(void) SetErrorMode (olderror);
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
if (bufp != buf) free (bufp);
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
return ret;
|
|
Packit Service |
2b1f13 |
}
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
#else
|
|
Packit Service |
2b1f13 |
#define fopen_file fopen
|
|
Packit Service |
2b1f13 |
#endif
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
int
|
|
Packit Service |
2b1f13 |
XmuReadBitmapDataFromFile(_Xconst char *filename, unsigned int *width,
|
|
Packit Service |
2b1f13 |
unsigned int *height, unsigned char **datap,
|
|
Packit Service |
2b1f13 |
int *x_hot, int *y_hot)
|
|
Packit Service |
2b1f13 |
{
|
|
Packit Service |
2b1f13 |
FILE *fstream;
|
|
Packit Service |
2b1f13 |
int status;
|
|
Packit Service |
2b1f13 |
|
|
Packit Service |
2b1f13 |
if ((fstream = fopen_file (filename, "r")) == NULL) {
|
|
Packit Service |
2b1f13 |
return BitmapOpenFailed;
|
|
Packit Service |
2b1f13 |
}
|
|
Packit Service |
2b1f13 |
status = XmuReadBitmapData(fstream, width, height, datap, x_hot, y_hot);
|
|
Packit Service |
2b1f13 |
fclose (fstream);
|
|
Packit Service |
2b1f13 |
return status;
|
|
Packit Service |
2b1f13 |
}
|