Added libXmu

1 files changed, 404 insertions, 0 deletions

diff --git a/libXmu/src/RdBitF.c b/libXmu/src/RdBitF.c
new file mode 100644
index 000000000..073e3dfbd
--- /dev/null
+++ b/libXmu/src/RdBitF.c
@@ -0,0 +1,404 @@
+/* $Xorg: RdBitF.c,v 1.4 2001/02/09 02:03:53 xorgcvs Exp $ */
+
+/*
+
+Copyright 1988, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+/* $XFree86: xc/lib/Xmu/RdBitF.c,v 3.12 2001/12/14 19:55:48 dawes Exp $ */
+
+/*
+ * This file contains miscellaneous utility routines and is not part of the
+ * Xlib standard.
+ *
+ * Public entry points:
+ *
+ *     XmuReadBitmapData		read data from FILE descriptor
+ *     XmuReadBitmapDataFromFile	read X10 or X11 format bitmap files
+ *					and return data
+ *
+ * Note that this file and ../X/XRdBitF.c look very similar....  Keep them
+ * that way (but don't use common source code so that people can have one 
+ * without the other).
+ */
+
+
+/*
+ * Based on an optimized version provided by Jim Becker, Auguest 5, 1988.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xos.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xlibint.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <X11/Xmu/Drawing.h>
+#ifdef WIN32
+#include <X11/Xwindows.h>
+#endif
+
+#define MAX_SIZE 255
+
+/*
+ * Prototypes
+ */
+static void initHexTable(void);
+static int NextInt(FILE*);
+
+/* shared data for the image read/parse logic */
+static short hexTable[256];		/* conversion value */
+static Bool initialized = False;	/* 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;
+	
+    initialized = True;
+}
+
+/*
+ *	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, unsigned int *width, unsigned int *height,
+		  unsigned char **datap, int *x_hot, int *y_hot)
+{
+    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 */
+
+#undef  Xmalloc /* see MALLOC_0_RETURNS_NULL in Xlibint.h */
+#define Xmalloc(size) malloc(size)
+
+    /* first time initialization */
+    if (initialized == False) 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);
+}
+
+#if defined(WIN32)
+static int
+access_file(char *path, char *pathbuf, int len_pathbuf, char **pathret)
+{
+    if (access (path, F_OK) == 0) {
+	if (strlen (path) < len_pathbuf)
+	    *pathret = pathbuf;
+	else
+	    *pathret = malloc (strlen (path) + 1);
+	if (*pathret) {
+	    strcpy (*pathret, path);
+	    return 1;
+	}
+    }
+    return 0;
+}
+
+static int
+AccessFile(char *path, char *pathbuf, int len_pathbuf, char **pathret)
+{
+#ifndef MAX_PATH
+#define MAX_PATH 512
+#endif
+
+    unsigned long drives;
+    int i, len;
+    char* drive;
+    char buf[MAX_PATH];
+    char* bufp;
+
+    /* just try the "raw" name first and see if it works */
+    if (access_file (path, pathbuf, len_pathbuf, pathret))
+	return 1;
+
+    /* try the places set in the environment */
+    drive = getenv ("_XBASEDRIVE");
+#ifdef __UNIXOS2__
+    if (!drive)
+	drive = getenv ("X11ROOT");
+#endif
+    if (!drive)
+	drive = "C:";
+    len = strlen (drive) + strlen (path);
+    if (len < MAX_PATH) bufp = buf;
+    else bufp = malloc (len + 1);
+    strcpy (bufp, drive);
+    strcat (bufp, path);
+    if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
+	if (bufp != buf) free (bufp);
+	return 1;
+    }
+
+#ifndef __UNIXOS2__ 
+    /* one last place to look */
+    drive = getenv ("HOMEDRIVE");
+    if (drive) {
+	len = strlen (drive) + strlen (path);
+	if (len < MAX_PATH) bufp = buf;
+	else bufp = malloc (len + 1);
+	strcpy (bufp, drive);
+	strcat (bufp, path);
+	if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
+	    if (bufp != buf) free (bufp);
+	    return 1;
+	}
+    }
+
+    /* does OS/2 (with or with gcc-emx) have getdrives? */
+    /* tried everywhere else, go fishing */
+#define C_DRIVE ('C' - 'A')
+#define Z_DRIVE ('Z' - 'A')
+    drives = _getdrives ();
+    for (i = C_DRIVE; i <= Z_DRIVE; i++) { /* don't check on A: or B: */
+	if ((1 << i) & drives) {
+	    len = 2 + strlen (path);
+	    if (len < MAX_PATH) bufp = buf;
+	    else bufp = malloc (len + 1);
+	    *bufp = 'A' + i;
+	    *(bufp + 1) = ':';
+	    *(bufp + 2) = '\0';
+	    strcat (bufp, path);
+	    if (access_file (bufp, pathbuf, len_pathbuf, pathret)) {
+		if (bufp != buf) free (bufp);
+		return 1;
+	    }
+	}
+    }
+#endif
+    return 0;
+}
+
+FILE *
+fopen_file(char *path, char *mode)
+{
+    char buf[MAX_PATH];
+    char* bufp;
+    void* ret = NULL;
+    UINT olderror = SetErrorMode (SEM_FAILCRITICALERRORS);
+
+    if (AccessFile (path, buf, MAX_PATH, &bufp))
+	ret = fopen (bufp, mode);
+
+    (void) SetErrorMode (olderror);
+
+    if (bufp != buf) free (bufp);
+
+    return ret;
+}
+
+#else
+#define fopen_file fopen
+#endif
+
+
+int
+XmuReadBitmapDataFromFile(_Xconst char *filename, unsigned int *width, 
+			       unsigned int *height, unsigned char **datap,
+			       int *x_hot, int *y_hot)
+{
+    FILE *fstream;
+    int status;
+
+#ifdef __UNIXOS2__
+    filename = __XOS2RedirRoot(filename);
+#endif
+    if ((fstream = fopen_file (filename, "r")) == NULL) {
+	return BitmapOpenFailed;
+    }
+    status = XmuReadBitmapData(fstream, width, height, datap, x_hot, y_hot);
+    fclose (fstream);
+    return status;
+}