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background image: make sure to close the farbfeld file on error

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This commit is contained in:
bakkeby 2022-03-11 09:38:09 +01:00
parent 1a8175a337
commit faac64e392
1 changed files with 17 additions and 25 deletions
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26
patch/background_image_x.c
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@ -20,18 +20,15 @@ loadff(const char *filename)
return NULL;
}
if (fread(hdr, sizeof(*hdr), LEN(hdr), f) != LEN(hdr))
if (ferror(f)) {
fprintf(stderr, "fread:");
return NULL;
}
else {
fprintf(stderr, "fread: Unexpected end of file\n");
if (fread(hdr, sizeof(*hdr), LEN(hdr), f) != LEN(hdr)) {
fprintf(stderr, "fread: %s\n", ferror(f) ? "" : "Unexpected end of file reading header");
fclose(f);
return NULL;
}
if (memcmp("farbfeld", hdr, sizeof("farbfeld") - 1)) {
fprintf(stderr, "Invalid magic value");
fprintf(stderr, "Invalid magic value\n");
fclose(f);
return NULL;
}
@ -40,13 +37,9 @@ loadff(const char *filename)
size = w * h;
data = malloc(size * sizeof(uint64_t));
if (fread(data, sizeof(uint64_t), size, f) != size)
if (ferror(f)) {
fprintf(stderr, "fread:");
return NULL;
}
else {
fprintf(stderr, "fread: Unexpected end of file");
if (fread(data, sizeof(uint64_t), size, f) != size) {
fprintf(stderr, "fread: %s\n", ferror(f) ? "" : "Unexpected end of file reading data");
fclose(f);
return NULL;
}
@ -91,8 +84,7 @@ bginit()
bgimg = XCreatePixmap(xw.dpy, xw.win, bgxi->width, bgxi->height,
DefaultDepth(xw.dpy, xw.scr));
#endif // ALPHA_PATCH
XPutImage(xw.dpy, bgimg, dc.gc, bgxi, 0, 0, 0, 0, bgxi->width,
bgxi->height);
XPutImage(xw.dpy, bgimg, dc.gc, bgxi, 0, 0, 0, 0, bgxi->width, bgxi->height);
XDestroyImage(bgxi);
XSetTile(xw.dpy, xw.bggc, bgimg);
XSetFillStyle(xw.dpy, xw.bggc, FillTiled);