[wxWidgets.git] / src / xpm / misc.c

/*
 * Copyright (C) 1989-94 GROUPE BULL
 *
 * 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
 * GROUPE BULL 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 GROUPE BULL shall not be
 * used in advertising or otherwise to promote the sale, use or other dealings
 * in this Software without prior written authorization from GROUPE BULL.
 */

/*****************************************************************************\
* misc.c:                                                                     *
*                                                                             *
*  XPM library                                                                *
*  Miscellaneous utilities                                                    *
*                                                                             *
*  Developed by Arnaud Le Hors                                                *
\*****************************************************************************/

/*
 * The code related to FOR_MSW has been added by
 * HeDu (hedu@cul-ipn.uni-kiel.de) 4/94
 */

#include "xpm34p.h"
#ifdef VMS
#include "sys$library:stat.h"
#include "sys$library:fcntl.h"
#else
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#ifdef FOR_MSW
#include <io.h>
#else
#include <unistd.h>
#endif
#endif

/* 3.2 backward compatibility code */
LFUNC(CreateOldColorTable, int, (XpmColor *ct, int ncolors,
				 XpmColor ***oldct));

LFUNC(FreeOldColorTable, void, (XpmColor **colorTable, int ncolors));

/*
 * Create a colortable compatible with the old style colortable
 */
static int
CreateOldColorTable(XpmColor *ct, int ncolors, XpmColor ***oldct)
{
    XpmColor **colorTable, **color;
    int a;

    colorTable = (XpmColor **) XpmMalloc(ncolors * sizeof(XpmColor *));
    if (!colorTable) {
	*oldct = NULL;
	return (XpmNoMemory);
    }
    for (a = 0, color = colorTable; a < ncolors; a++, color++, ct++)
	*color = ct;
    *oldct = colorTable;
    return (XpmSuccess);
}

static void
FreeOldColorTable(XpmColor **colorTable, int ncolors)
{
    int a, b;
    XpmColor **color;
    char **sptr;

    if (colorTable) {
	for (a = 0, color = colorTable; a < ncolors; a++, color++) {
	    for (b = 0, sptr = (char **) *color; b <= NKEYS; b++, sptr++)
		if (*sptr)
		    XpmFree(*sptr);
	}
	XpmFree(*colorTable);
	XpmFree(colorTable);
    }
}

/* end 3.2 bc */


/*
 * Free the computed color table
 */
void
xpmFreeColorTable(XpmColor *colorTable, int ncolors)
{
    int a, b;
    XpmColor *color;
    char **sptr;

    if (colorTable) {
	for (a = 0, color = colorTable; a < ncolors; a++, color++) {
	    for (b = 0, sptr = (char **) color; b <= NKEYS; b++, sptr++)
		if (*sptr)
		    XpmFree(*sptr);
	}
	XpmFree(colorTable);
    }
}

/*
 * Free array of extensions
 */
void
XpmFreeExtensions(XpmExtension *extensions, int nextensions)
{
    unsigned int i, j, nlines;
    XpmExtension *ext;
    char **sptr;

    if (extensions) {
	for (i = 0, ext = extensions; i < (unsigned int)nextensions; i++, ext++) {
	    if (ext->name)
		XpmFree(ext->name);
	    nlines = ext->nlines;
	    for (j = 0, sptr = ext->lines; j < nlines; j++, sptr++)
		if (*sptr)
		    XpmFree(*sptr);
	    if (ext->lines)
		XpmFree(ext->lines);
	}
	XpmFree(extensions);
    }
}


/*
 * Return the XpmAttributes structure size
 */

int
XpmAttributesSize()
{
    return sizeof(XpmAttributes);
}

/*
 * Init returned data to free safely later on
 */
void
xpmInitAttributes(XpmAttributes *attributes)
{
    if (attributes) {
	attributes->pixels = NULL;
	attributes->npixels = 0;
	attributes->colorTable = NULL;
	attributes->ncolors = 0;
/* 3.2 backward compatibility code */
	attributes->hints_cmt = NULL;
	attributes->colors_cmt = NULL;
	attributes->pixels_cmt = NULL;
/* end 3.2 bc */
	attributes->extensions = NULL;
	attributes->nextensions = 0;
    }
}

/*
 * Fill in the XpmAttributes with the XpmImage and the XpmInfo
 */
void
xpmSetAttributes(XpmAttributes *attributes, XpmImage *image, XpmInfo *info)
{
    if (attributes->valuemask & XpmReturnColorTable) {
	attributes->colorTable = image->colorTable;
	attributes->ncolors = image->ncolors;

	/* avoid deletion of copied data */
	image->ncolors = 0;
	image->colorTable = NULL;
    }
/* 3.2 backward compatibility code */
    else if (attributes->valuemask & XpmReturnInfos) {
	int ErrorStatus;

	ErrorStatus = CreateOldColorTable(image->colorTable, image->ncolors,
					  (XpmColor ***)
					  &attributes->colorTable);

	/* if error just say we can't return requested data */
	if (ErrorStatus != XpmSuccess) {
	    attributes->valuemask &= ~XpmReturnInfos;
	    if (!(attributes->valuemask & XpmReturnPixels)) {
		XpmFree(attributes->pixels);
		attributes->pixels = NULL;
		attributes->npixels = 0;
	    }
	    attributes->ncolors = 0;
	} else {
	    attributes->ncolors = image->ncolors;
	    attributes->hints_cmt = info->hints_cmt;
	    attributes->colors_cmt = info->colors_cmt;
	    attributes->pixels_cmt = info->pixels_cmt;

	    /* avoid deletion of copied data */
	    image->ncolors = 0;
	    image->colorTable = NULL;
	    info->hints_cmt = NULL;
	    info->colors_cmt = NULL;
	    info->pixels_cmt = NULL;
	}
    }
/* end 3.2 bc */
    if (attributes->valuemask & XpmReturnExtensions) {
	attributes->extensions = info->extensions;
	attributes->nextensions = info->nextensions;

	/* avoid deletion of copied data */
	info->extensions = NULL;
	info->nextensions = 0;
    }
    if (info->valuemask & XpmHotspot) {
	attributes->valuemask |= XpmHotspot;
	attributes->x_hotspot = info->x_hotspot;
	attributes->y_hotspot = info->y_hotspot;
    }
    attributes->valuemask |= XpmCharsPerPixel;
    attributes->cpp = image->cpp;
    attributes->valuemask |= XpmSize;
    attributes->width = image->width;
    attributes->height = image->height;
}

/*
 * Free the XpmAttributes structure members
 * but the structure itself
 */
void
XpmFreeAttributes(XpmAttributes *attributes)
{
    if (attributes->valuemask & XpmReturnPixels && attributes->npixels) {
	XpmFree(attributes->pixels);
	attributes->pixels = NULL;
	attributes->npixels = 0;
    }
    if (attributes->valuemask & XpmReturnColorTable) {
	xpmFreeColorTable(attributes->colorTable, attributes->ncolors);
	attributes->colorTable = NULL;
	attributes->ncolors = 0;
    }
/* 3.2 backward compatibility code */
    else if (attributes->valuemask & XpmInfos) {
	if (attributes->colorTable) {
	    FreeOldColorTable((XpmColor **) attributes->colorTable,
			      attributes->ncolors);
	    attributes->colorTable = NULL;
	    attributes->ncolors = 0;
	}
	if (attributes->hints_cmt) {
	    XpmFree(attributes->hints_cmt);
	    attributes->hints_cmt = NULL;
	}
	if (attributes->colors_cmt) {
	    XpmFree(attributes->colors_cmt);
	    attributes->colors_cmt = NULL;
	}
	if (attributes->pixels_cmt) {
	    XpmFree(attributes->pixels_cmt);
	    attributes->pixels_cmt = NULL;
	}
	if (attributes->pixels) {
	    XpmFree(attributes->pixels);
	    attributes->pixels = NULL;
	    attributes->npixels = 0;
	}
    }
/* end 3.2 bc */
    if (attributes->valuemask & XpmReturnExtensions
	&& attributes->nextensions) {
	XpmFreeExtensions(attributes->extensions, attributes->nextensions);
	attributes->extensions = NULL;
	attributes->nextensions = 0;
    }
    attributes->valuemask = 0;
}

/*
 * Init returned data to free safely later on
 */
void
xpmInitXpmImage(XpmImage *image)
{
    image->ncolors = 0;
    image->colorTable = NULL;
    image->data = NULL;
}

/*
 * Free the XpmImage data which have been allocated
 */
void
XpmFreeXpmImage(XpmImage *image)
{
    if (image->colorTable)
	xpmFreeColorTable(image->colorTable, image->ncolors);
    XpmFree(image->data);
    image->data = NULL;
}

/*
 * Init returned data to free safely later on
 */
void
xpmInitXpmInfo(XpmInfo *info)
{
    if (info) {
	info->hints_cmt = NULL;
	info->colors_cmt = NULL;
	info->pixels_cmt = NULL;
	info->extensions = NULL;
	info->nextensions = 0;
    }
}

/*
 * Free the XpmInfo data which have been allocated
 */
void
XpmFreeXpmInfo(XpmInfo *info)
{
    if (info) {
	if (info->valuemask & XpmComments) {
	    if (info->hints_cmt) {
		XpmFree(info->hints_cmt);
		info->hints_cmt = NULL;
	    }
	    if (info->colors_cmt) {
		XpmFree(info->colors_cmt);
		info->colors_cmt = NULL;
	    }
	    if (info->pixels_cmt) {
		XpmFree(info->pixels_cmt);
		info->pixels_cmt = NULL;
	    }
	}
	if (info->valuemask & XpmReturnExtensions && info->nextensions) {
	    XpmFreeExtensions(info->extensions, info->nextensions);
	    info->extensions = NULL;
	    info->nextensions = 0;
	}
	info->valuemask = 0;
    }
}

/*
 * Set the XpmInfo valuemask to retrieve required info
 */
void
xpmSetInfoMask(XpmInfo *info, XpmAttributes *attributes)
{
    info->valuemask = 0;
    if (attributes->valuemask & XpmReturnInfos)
	info->valuemask |= XpmReturnComments;
    if (attributes->valuemask & XpmReturnExtensions)
	info->valuemask |= XpmReturnExtensions;
}

/*
 * Fill in the XpmInfo with the XpmAttributes
 */
void
xpmSetInfo(XpmInfo *info, XpmAttributes *attributes)
{
    info->valuemask = 0;
    if (attributes->valuemask & XpmInfos) {
	info->valuemask |= XpmComments | XpmColorTable;
	info->hints_cmt = attributes->hints_cmt;
	info->colors_cmt = attributes->colors_cmt;
	info->pixels_cmt = attributes->pixels_cmt;
    }
    if (attributes->valuemask & XpmExtensions) {
	info->valuemask |= XpmExtensions;
	info->extensions = attributes->extensions;
	info->nextensions = attributes->nextensions;
    }
    if (attributes->valuemask & XpmHotspot) {
	info->valuemask |= XpmHotspot;
	info->x_hotspot = attributes->x_hotspot;
	info->y_hotspot = attributes->y_hotspot;
    }
}


#ifdef NEED_STRDUP
/*
 * in case strdup is not provided by the system here is one
 * which does the trick
 */
char *
strdup(char *s1)
{
    char *s2;
    int l = strlen(s1) + 1;

    if (s2 = (char *) XpmMalloc(l))
	strncpy(s2, s1, l);
    return s2;
}

#endif

unsigned int
atoui(register char *p, unsigned int l, unsigned int *ui_return)
{
    register unsigned int n, i;

    n = 0;
    for (i = 0; i < l; i++)
	if (*p >= '0' && *p <= '9')
	    n = n * 10 + *p++ - '0';
	else
	    break;

    if (i != 0 && i == l) {
	*ui_return = n;
	return 1;
    } else
	return 0;
}


/*
 *  File / Buffer utilities
 */
int
XpmReadFileToBuffer(char *filename, char **buffer_return)
{
    int fd, fcheck, len;
    char *ptr;
    struct stat stats;
    FILE *fp;

    *buffer_return = NULL;

    fd = open(filename, O_RDONLY);
    if (fd < 0)
	return XpmOpenFailed;

    if (fstat(fd, &stats)) {
	close(fd);
	return XpmOpenFailed;
    }
    fp = fdopen(fd, "r");
    if (!fp) {
	close(fd);
	return XpmOpenFailed;
    }
    len = (int) stats.st_size;
    ptr = (char *) XpmMalloc(len + 1);
    if (!ptr) {
	fclose(fp);
	return XpmNoMemory;
    }
    fcheck = fread(ptr, len, 1, fp);
    fclose(fp);
    if (fcheck != 1) {
	XpmFree(ptr);
	return XpmOpenFailed;
    }
    ptr[len] = '\0';
    *buffer_return = ptr;
    return XpmSuccess;
}

int
XpmWriteFileFromBuffer(char *filename, char *buffer)
{
    int fcheck, len;
    FILE *fp = fopen(filename, "w");

    if (!fp)
	return XpmOpenFailed;

    len = strlen(buffer);
    fcheck = fwrite(buffer, len, 1, fp);
    fclose(fp);
    if (fcheck != 1)
	return XpmOpenFailed;

    return XpmSuccess;
}


/*
 * Small utility function
 */
char *
XpmGetErrorString(int errcode)
{
    switch (errcode) {
    case XpmColorError:
	return ("XpmColorError");
    case XpmSuccess:
	return ("XpmSuccess");
    case XpmOpenFailed:
	return ("XpmOpenFailed");
    case XpmFileInvalid:
	return ("XpmFileInvalid");
    case XpmNoMemory:
	return ("XpmNoMemory");
    case XpmColorFailed:
	return ("XpmColorFailed");
    default:
	return ("Invalid XpmError");
    }
}

/*
 * The following function provides a way to figure out if the linked library is
 * newer or older than the one with which a program has been first compiled.
 */
int
XpmLibraryVersion()
{
    return XpmIncludeVersion;
}


#ifndef FOR_MSW
void
xpmCreatePixmapFromImage(Display *display, Drawable d, XImage *ximage, Pixmap *pixmap_return)
{
    GC gc;

    *pixmap_return = XCreatePixmap(display, d, ximage->width,
				   ximage->height, ximage->depth);
    gc = XCreateGC(display, *pixmap_return, 0, NULL);

    XPutImage(display, *pixmap_return, gc, ximage, 0, 0, 0, 0,
	      ximage->width, ximage->height);

    XFreeGC(display, gc);
}

void
xpmCreateImageFromPixmap(Display *display, Pixmap pixmap, XImage **ximage_return, unsigned int *width, unsigned int *height)
{
    unsigned int dum;
    int dummy;
    Window win;

    if (*width == 0 && *height == 0)
	XGetGeometry(display, pixmap, &win, &dummy, &dummy,
		     width, height, &dum, &dum);

    *ximage_return = XGetImage(display, pixmap, 0, 0, *width, *height,
			       AllPlanes, ZPixmap);
}

#endif /* FOR_MSW */
Commit	Line	Data
cfbe03c9 JS	1	/*
	2	* Copyright (C) 1989-94 GROUPE BULL
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
	5	* of this software and associated documentation files (the "Software"), to
	6	* deal in the Software without restriction, including without limitation the
	7	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	8	* sell copies of the Software, and to permit persons to whom the Software is
	9	* furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
	18	* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	19	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	20	*
	21	* Except as contained in this notice, the name of GROUPE BULL shall not be
	22	* used in advertising or otherwise to promote the sale, use or other dealings
	23	* in this Software without prior written authorization from GROUPE BULL.
	24	*/
	25
	26	/*****************************************************************************\
	27	* misc.c: *
	28	* *
	29	* XPM library *
	30	* Miscellaneous utilities *
	31	* *
	32	* Developed by Arnaud Le Hors *
	33	\*****************************************************************************/
	34
	35	/*
	36	* The code related to FOR_MSW has been added by
	37	* HeDu (hedu@cul-ipn.uni-kiel.de) 4/94
	38	*/
	39
	40	#include "xpm34p.h"
	41	#ifdef VMS
	42	#include "sys$library:stat.h"
	43	#include "sys$library:fcntl.h"
	44	#else
	45	#include <sys/types.h>
	46	#include <sys/stat.h>
	47	#include <fcntl.h>
	48	#include <stdio.h>
	49	#ifdef FOR_MSW
	50	#include <io.h>
	51	#else
	52	#include <unistd.h>
	53	#endif
	54	#endif
	55
	56	/* 3.2 backward compatibility code */
	57	LFUNC(CreateOldColorTable, int, (XpmColor *ct, int ncolors,
	58	XpmColor ***oldct));
	59
	60	LFUNC(FreeOldColorTable, void, (XpmColor **colorTable, int ncolors));
	61
	62	/*
	63	* Create a colortable compatible with the old style colortable
	64	*/
65	static int
66	CreateOldColorTable(XpmColor ct, int ncolors, XpmColor **oldct)
67	{
68	XpmColor colorTable, color;
69	int a;
70
71	colorTable = (XpmColor *) XpmMalloc(ncolors sizeof(XpmColor *));
72	if (!colorTable) {
73	*oldct = NULL;
74	return (XpmNoMemory);
75	}
76	for (a = 0, color = colorTable; a < ncolors; a++, color++, ct++)
77	*color = ct;
78	*oldct = colorTable;
79	return (XpmSuccess);
80	}
81
82	static void
83	FreeOldColorTable(XpmColor **colorTable, int ncolors)
84	{
85	int a, b;
86	XpmColor **color;
87	char **sptr;
88
89	if (colorTable) {
90	for (a = 0, color = colorTable; a < ncolors; a++, color++) {
91	for (b = 0, sptr = (char *) color; b <= NKEYS; b++, sptr++)
92	if (*sptr)
93	XpmFree(*sptr);
94	}
95	XpmFree(*colorTable);
96	XpmFree(colorTable);
97	}
98	}
99
100	/* end 3.2 bc */
101
102
103	/*
104	* Free the computed color table
105	*/
106	void
107	xpmFreeColorTable(XpmColor *colorTable, int ncolors)
108	{
109	int a, b;
110	XpmColor *color;
111	char **sptr;
112
113	if (colorTable) {
114	for (a = 0, color = colorTable; a < ncolors; a++, color++) {
115	for (b = 0, sptr = (char **) color; b <= NKEYS; b++, sptr++)
116	if (*sptr)
117	XpmFree(*sptr);
118	}
119	XpmFree(colorTable);
120	}
121	}
122
123	/*
124	* Free array of extensions
125	*/
126	void
127	XpmFreeExtensions(XpmExtension *extensions, int nextensions)
128	{
129	unsigned int i, j, nlines;
130	XpmExtension *ext;
131	char **sptr;
132
133	if (extensions) {
197dd9af	134	for (i = 0, ext = extensions; i < (unsigned int)nextensions; i++, ext++) {
cfbe03c9 JS	135	if (ext->name)
	136	XpmFree(ext->name);
	137	nlines = ext->nlines;
	138	for (j = 0, sptr = ext->lines; j < nlines; j++, sptr++)
	139	if (*sptr)
	140	XpmFree(*sptr);
	141	if (ext->lines)
	142	XpmFree(ext->lines);
	143	}
	144	XpmFree(extensions);
	145	}
	146	}
	147
	148
	149	/*
	150	* Return the XpmAttributes structure size
	151	*/
	152
	153	int
	154	XpmAttributesSize()
	155	{
	156	return sizeof(XpmAttributes);
	157	}
	158
	159	/*
	160	* Init returned data to free safely later on
	161	*/
	162	void
	163	xpmInitAttributes(XpmAttributes *attributes)
	164	{
	165	if (attributes) {
	166	attributes->pixels = NULL;
	167	attributes->npixels = 0;
	168	attributes->colorTable = NULL;
	169	attributes->ncolors = 0;
	170	/* 3.2 backward compatibility code */
	171	attributes->hints_cmt = NULL;
	172	attributes->colors_cmt = NULL;
	173	attributes->pixels_cmt = NULL;
	174	/* end 3.2 bc */
	175	attributes->extensions = NULL;
	176	attributes->nextensions = 0;
	177	}
	178	}
	179
	180	/*
	181	* Fill in the XpmAttributes with the XpmImage and the XpmInfo
	182	*/
	183	void
	184	xpmSetAttributes(XpmAttributes attributes, XpmImage image, XpmInfo *info)
	185	{
	186	if (attributes->valuemask & XpmReturnColorTable) {
	187	attributes->colorTable = image->colorTable;
	188	attributes->ncolors = image->ncolors;
	189
	190	/* avoid deletion of copied data */
	191	image->ncolors = 0;
	192	image->colorTable = NULL;
	193	}
	194	/* 3.2 backward compatibility code */
	195	else if (attributes->valuemask & XpmReturnInfos) {
	196	int ErrorStatus;
	197
	198	ErrorStatus = CreateOldColorTable(image->colorTable, image->ncolors,
199	(XpmColor ***)
200	&attributes->colorTable);
201
202	/* if error just say we can't return requested data */
203	if (ErrorStatus != XpmSuccess) {
204	attributes->valuemask &= ~XpmReturnInfos;
205	if (!(attributes->valuemask & XpmReturnPixels)) {
206	XpmFree(attributes->pixels);
207	attributes->pixels = NULL;
208	attributes->npixels = 0;
209	}
210	attributes->ncolors = 0;
211	} else {
212	attributes->ncolors = image->ncolors;
213	attributes->hints_cmt = info->hints_cmt;
214	attributes->colors_cmt = info->colors_cmt;
215	attributes->pixels_cmt = info->pixels_cmt;
216
217	/* avoid deletion of copied data */
218	image->ncolors = 0;
219	image->colorTable = NULL;
220	info->hints_cmt = NULL;
221	info->colors_cmt = NULL;
222	info->pixels_cmt = NULL;
223	}
224	}
225	/* end 3.2 bc */
226	if (attributes->valuemask & XpmReturnExtensions) {
227	attributes->extensions = info->extensions;
228	attributes->nextensions = info->nextensions;
229
230	/* avoid deletion of copied data */
231	info->extensions = NULL;
232	info->nextensions = 0;
233	}
234	if (info->valuemask & XpmHotspot) {
235	attributes->valuemask \|= XpmHotspot;
236	attributes->x_hotspot = info->x_hotspot;
237	attributes->y_hotspot = info->y_hotspot;
238	}
239	attributes->valuemask \|= XpmCharsPerPixel;
240	attributes->cpp = image->cpp;
241	attributes->valuemask \|= XpmSize;
242	attributes->width = image->width;
243	attributes->height = image->height;
244	}
245
246	/*
247	* Free the XpmAttributes structure members
248	* but the structure itself
249	*/
250	void
251	XpmFreeAttributes(XpmAttributes *attributes)
252	{
253	if (attributes->valuemask & XpmReturnPixels && attributes->npixels) {
254	XpmFree(attributes->pixels);
255	attributes->pixels = NULL;
256	attributes->npixels = 0;
257	}
258	if (attributes->valuemask & XpmReturnColorTable) {
259	xpmFreeColorTable(attributes->colorTable, attributes->ncolors);
260	attributes->colorTable = NULL;
261	attributes->ncolors = 0;
262	}
263	/* 3.2 backward compatibility code */
264	else if (attributes->valuemask & XpmInfos) {
265	if (attributes->colorTable) {
266	FreeOldColorTable((XpmColor **) attributes->colorTable,
267	attributes->ncolors);
268	attributes->colorTable = NULL;
269	attributes->ncolors = 0;
270	}
271	if (attributes->hints_cmt) {
272	XpmFree(attributes->hints_cmt);
273	attributes->hints_cmt = NULL;
274	}
275	if (attributes->colors_cmt) {
276	XpmFree(attributes->colors_cmt);
277	attributes->colors_cmt = NULL;
278	}
279	if (attributes->pixels_cmt) {
280	XpmFree(attributes->pixels_cmt);
281	attributes->pixels_cmt = NULL;
282	}
283	if (attributes->pixels) {
284	XpmFree(attributes->pixels);
285	attributes->pixels = NULL;
286	attributes->npixels = 0;
287	}
288	}
289	/* end 3.2 bc */
290	if (attributes->valuemask & XpmReturnExtensions
291	&& attributes->nextensions) {
292	XpmFreeExtensions(attributes->extensions, attributes->nextensions);
293	attributes->extensions = NULL;
294	attributes->nextensions = 0;
295	}
296	attributes->valuemask = 0;
297	}
298
299	/*
300	* Init returned data to free safely later on
301	*/
302	void
303	xpmInitXpmImage(XpmImage *image)
304	{
305	image->ncolors = 0;
306	image->colorTable = NULL;
307	image->data = NULL;
308	}
309
310	/*
311	* Free the XpmImage data which have been allocated
312	*/
313	void
314	XpmFreeXpmImage(XpmImage *image)
315	{
316	if (image->colorTable)
317	xpmFreeColorTable(image->colorTable, image->ncolors);
318	XpmFree(image->data);
319	image->data = NULL;
320	}
321
322	/*
323	* Init returned data to free safely later on
324	*/
325	void
326	xpmInitXpmInfo(XpmInfo *info)
327	{
328	if (info) {
329	info->hints_cmt = NULL;
330	info->colors_cmt = NULL;
331	info->pixels_cmt = NULL;
332	info->extensions = NULL;
333	info->nextensions = 0;
334	}
335	}
336
337	/*
338	* Free the XpmInfo data which have been allocated
339	*/
340	void
341	XpmFreeXpmInfo(XpmInfo *info)
342	{
343	if (info) {
344	if (info->valuemask & XpmComments) {
345	if (info->hints_cmt) {
346	XpmFree(info->hints_cmt);
347	info->hints_cmt = NULL;
348	}
349	if (info->colors_cmt) {
350	XpmFree(info->colors_cmt);
351	info->colors_cmt = NULL;
352	}
353	if (info->pixels_cmt) {
354	XpmFree(info->pixels_cmt);
355	info->pixels_cmt = NULL;
356	}
357	}
358	if (info->valuemask & XpmReturnExtensions && info->nextensions) {
359	XpmFreeExtensions(info->extensions, info->nextensions);
360	info->extensions = NULL;
361	info->nextensions = 0;
362	}
363	info->valuemask = 0;
364	}
365	}
366
367	/*
368	* Set the XpmInfo valuemask to retrieve required info
369	*/
370	void
371	xpmSetInfoMask(XpmInfo info, XpmAttributes attributes)
372	{
373	info->valuemask = 0;
374	if (attributes->valuemask & XpmReturnInfos)
375	info->valuemask \|= XpmReturnComments;
376	if (attributes->valuemask & XpmReturnExtensions)
377	info->valuemask \|= XpmReturnExtensions;
378	}
379
380	/*
381	* Fill in the XpmInfo with the XpmAttributes
382	*/
383	void
384	xpmSetInfo(XpmInfo info, XpmAttributes attributes)
385	{
386	info->valuemask = 0;
387	if (attributes->valuemask & XpmInfos) {
388	info->valuemask \|= XpmComments \| XpmColorTable;
389	info->hints_cmt = attributes->hints_cmt;
390	info->colors_cmt = attributes->colors_cmt;
391	info->pixels_cmt = attributes->pixels_cmt;
392	}
393	if (attributes->valuemask & XpmExtensions) {
394	info->valuemask \|= XpmExtensions;
395	info->extensions = attributes->extensions;
396	info->nextensions = attributes->nextensions;
397	}
398	if (attributes->valuemask & XpmHotspot) {
399	info->valuemask \|= XpmHotspot;
400	info->x_hotspot = attributes->x_hotspot;
401	info->y_hotspot = attributes->y_hotspot;
402	}
403	}
404
405
406	#ifdef NEED_STRDUP
407	/*
408	* in case strdup is not provided by the system here is one
409	* which does the trick
410	*/
411	char *
412	strdup(char *s1)
413	{
414	char *s2;
415	int l = strlen(s1) + 1;
416
417	if (s2 = (char *) XpmMalloc(l))
418	strncpy(s2, s1, l);
419	return s2;
420	}
421
422	#endif
423
424	unsigned int
425	atoui(register char p, unsigned int l, unsigned int ui_return)
426	{
427	register unsigned int n, i;
428
429	n = 0;
430	for (i = 0; i < l; i++)
431	if (p >= '0' && p <= '9')
432	n = n * 10 + *p++ - '0';
433	else
434	break;
435
436	if (i != 0 && i == l) {
437	*ui_return = n;
438	return 1;
439	} else
440	return 0;
441	}
442
443
444	/*
445	* File / Buffer utilities
446	*/
447	int
448	XpmReadFileToBuffer(char filename, char *buffer_return)
449	{
450	int fd, fcheck, len;
451	char *ptr;
452	struct stat stats;
453	FILE *fp;
454
455	*buffer_return = NULL;
456
457	fd = open(filename, O_RDONLY);
458	if (fd < 0)
459	return XpmOpenFailed;
460
461	if (fstat(fd, &stats)) {
462	close(fd);
463	return XpmOpenFailed;
464	}
465	fp = fdopen(fd, "r");
466	if (!fp) {
467	close(fd);
468	return XpmOpenFailed;
469	}
470	len = (int) stats.st_size;
471	ptr = (char *) XpmMalloc(len + 1);
472	if (!ptr) {
473	fclose(fp);
474	return XpmNoMemory;
475	}
476	fcheck = fread(ptr, len, 1, fp);
477	fclose(fp);
478	if (fcheck != 1) {
479	XpmFree(ptr);
480	return XpmOpenFailed;
481	}
482	ptr[len] = '\0';
483	*buffer_return = ptr;
484	return XpmSuccess;
485	}
486
487	int
488	XpmWriteFileFromBuffer(char filename, char buffer)
489	{
490	int fcheck, len;
491	FILE *fp = fopen(filename, "w");
492
493	if (!fp)
494	return XpmOpenFailed;
495
496	len = strlen(buffer);
497	fcheck = fwrite(buffer, len, 1, fp);
498	fclose(fp);
499	if (fcheck != 1)
500	return XpmOpenFailed;
501
502	return XpmSuccess;
503	}
504
505
506	/*
507	* Small utility function
508	*/
509	char *
510	XpmGetErrorString(int errcode)
511	{
512	switch (errcode) {
513	case XpmColorError:
514	return ("XpmColorError");
515	case XpmSuccess:
516	return ("XpmSuccess");
517	case XpmOpenFailed:
518	return ("XpmOpenFailed");
519	case XpmFileInvalid:
520	return ("XpmFileInvalid");
521	case XpmNoMemory:
522	return ("XpmNoMemory");
523	case XpmColorFailed:
524	return ("XpmColorFailed");
525	default:
526	return ("Invalid XpmError");
527	}
528	}
529
530	/*
531	* The following function provides a way to figure out if the linked library is
532	* newer or older than the one with which a program has been first compiled.
533	*/
534	int
535	XpmLibraryVersion()
536	{
537	return XpmIncludeVersion;
538	}
539
540
541	#ifndef FOR_MSW
542	void
543	xpmCreatePixmapFromImage(Display display, Drawable d, XImage ximage, Pixmap *pixmap_return)
544	{
545	GC gc;
546
547	*pixmap_return = XCreatePixmap(display, d, ximage->width,
548	ximage->height, ximage->depth);
549	gc = XCreateGC(display, *pixmap_return, 0, NULL);
550
551	XPutImage(display, *pixmap_return, gc, ximage, 0, 0, 0, 0,
552	ximage->width, ximage->height);
553
554	XFreeGC(display, gc);
555	}
556
557	void
558	xpmCreateImageFromPixmap(Display display, Pixmap pixmap, XImage ximage_return, unsigned int width, unsigned int *height)
559	{
560	unsigned int dum;
561	int dummy;
562	Window win;
563
564	if (width == 0 && height == 0)
565	XGetGeometry(display, pixmap, &win, &dummy, &dummy,
566	width, height, &dum, &dum);
567
568	ximage_return = XGetImage(display, pixmap, 0, 0, width, *height,
569	AllPlanes, ZPixmap);
570	}
571
572	#endif /* FOR_MSW */