diff options
author | anderson <anderson> | 2005-02-12 14:37:13 +0000 |
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committer | anderson <anderson> | 2005-02-12 14:37:13 +0000 |
commit | 3f33351e8c679b4ba0ccac3620a2d4948885c2f8 (patch) | |
tree | f270939b0f360ef3eac99d0bc72b8bf7dff001af /xts5/src/libXtmu/RdBitF.c |
Initial revision
Diffstat (limited to 'xts5/src/libXtmu/RdBitF.c')
-rw-r--r-- | xts5/src/libXtmu/RdBitF.c | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/xts5/src/libXtmu/RdBitF.c b/xts5/src/libXtmu/RdBitF.c new file mode 100644 index 00000000..873b009e --- /dev/null +++ b/xts5/src/libXtmu/RdBitF.c @@ -0,0 +1,332 @@ +/* +Copyright (c) 2005 X.Org Foundation LLC + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +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 +AUTHORS OR COPYRIGHT HOLDERS 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. +*/ +/* +* $Header: /cvs/xtest/xtest/xts5/src/libXtmu/RdBitF.c,v 1.1 2005-02-12 14:37:15 anderson Exp $ +* +* Copyright (c) Applied Testing and Technology, Inc. 1993, 1994, 1995 +* All Rights Reserved. +* +* Project: VSW5 +* +* File: vsw5/src/lib/libXtaw/RdBitF.c +* +* Description: +* Subset of libXmu need for VSW5. Use if implementation does not +* support Athena. +* +* Modifications: +* $Log: RdBitF.c,v $ +* Revision 1.1 2005-02-12 14:37:15 anderson +* Initial revision +* +* Revision 8.0 1998/12/23 23:26:03 mar +* Branch point for Release 5.0.2 +* +* Revision 7.0 1998/10/30 22:44:19 mar +* Branch point for Release 5.0.2b1 +* +* Revision 6.0 1998/03/02 05:18:21 tbr +* Branch point for Release 5.0.1 +* +* Revision 5.0 1998/01/26 03:14:53 tbr +* Branch point for Release 5.0.1b1 +* +* Revision 4.0 1995/12/15 08:46:30 tbr +* Branch point for Release 5.0.0 +* +* Revision 3.1 1995/12/15 00:44:40 andy +* Prepare for GA Release +* +*/ +/* + * Copyright 1988 Massachusetts Institute of Technology + * + * 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, 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. + * + * + * 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. + */ + +#include <X11/Xos.h> +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <stdio.h> +#include <ctype.h> + + +#define MAX_SIZE 255 + +/* 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() +{ + /* + * 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 NextInt (fstream) + 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 (fstream, width, height, datap, x_hot, y_hot) + FILE *fstream; /* handle on file */ + unsigned int *width, *height; /* RETURNED */ + unsigned char **datap; /* RETURNED */ + int *x_hot, *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 */ + +#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 = rindex(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 = rindex(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 NeedFunctionPrototypes +int XmuReadBitmapDataFromFile (_Xconst char *filename, unsigned int *width, + unsigned int *height, unsigned char **datap, + int *x_hot, int *y_hot) +#else +int XmuReadBitmapDataFromFile (filename, width, height, datap, x_hot, y_hot) + char *filename; + unsigned int *width, *height; /* RETURNED */ + unsigned char **datap; /* RETURNED */ + int *x_hot, *y_hot; /* RETURNED */ +#endif +{ + 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; +} |