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/* Copyright 1990-93 GROUPE BULL -- See license conditions in file COPYRIGHT */
/*****************************************************************************\
* misc.c: *
* *
* XPM library *
* Miscellaneous utilities *
* *
* Developed by Arnaud Le Hors *
\*****************************************************************************/
#include "xpmP.h"
#ifdef VMS
#include "sys$library:stat.h"
#include "sys$library:fcntl.h"
#else
#include <sys/stat.h>
#include <fcntl.h>
#endif
/*
* Free the computed color table
*/
void
xpmFreeColorTable(colorTable, ncolors)
XpmColor *colorTable;
int ncolors;
{
int a, b;
XpmColor *color;
xpmColorDefaults defaults;
char **sptr;
if (colorTable) {
for (a = 0, color = colorTable; a < ncolors; a++, color++) {
defaults = (xpmColorDefaults) color;
for (b = 0, sptr = (char **) defaults; b <= NKEYS; b++, sptr++)
if (*sptr)
XpmFree(*sptr);
}
XpmFree(colorTable);
}
}
/*
* Free array of extensions
*/
void
XpmFreeExtensions(extensions, nextensions)
XpmExtension *extensions;
int nextensions;
{
unsigned int i, j, nlines;
XpmExtension *ext;
char **sptr;
if (extensions) {
for (i = 0, ext = extensions; i < 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(attributes)
XpmAttributes *attributes;
{
if (attributes) {
attributes->pixels = NULL;
attributes->npixels = 0;
attributes->extensions = NULL;
attributes->nextensions = 0;
}
}
/*
* Free the XpmAttributes structure members
* but the structure itself
*/
void
XpmFreeAttributes(attributes)
XpmAttributes *attributes;
{
if (attributes) {
if (attributes->valuemask & XpmReturnPixels && attributes->npixels) {
XpmFree(attributes->pixels);
attributes->pixels = NULL;
attributes->npixels = 0;
}
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(image)
XpmImage *image;
{
image->ncolors = 0;
image->colorTable = NULL;
image->data = NULL;
}
/*
* Free the XpmImage data which have been allocated
*/
void
XpmFreeXpmImage(image)
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
xpmInitXpmInfos(infos)
XpmInfos *infos;
{
if (infos) {
infos->hints_cmt = NULL;
infos->colors_cmt = NULL;
infos->pixels_cmt = NULL;
}
}
/*
* Free the XpmInfos data which have been allocated
*/
void
XpmFreeXpmInfos(infos)
XpmInfos *infos;
{
if (infos) {
if (infos->hints_cmt) {
XpmFree(infos->hints_cmt);
infos->hints_cmt = NULL;
}
if (infos->colors_cmt) {
XpmFree(infos->colors_cmt);
infos->colors_cmt = NULL;
}
if (infos->pixels_cmt) {
XpmFree(infos->pixels_cmt);
infos->pixels_cmt = NULL;
}
}
}
#ifdef NEED_STRDUP
/*
* in case strdup is not provided by the system here is one
* which does the trick
*/
char *
strdup(s1)
char *s1;
{
char *s2;
int l = strlen(s1) + 1;
if (s2 = (char *) XpmMalloc(l))
strncpy(s2, s1, l);
return s2;
}
#endif
/*
* File / Buffer utilities
*/
int
XpmReadFileToBuffer(filename, buffer_return)
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(filename, buffer)
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(errcode)
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");
}
}
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