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Fl_SVG_Image: remove use of gzdirect() that is absent in some old versions of zlib

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12519 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy 2017-10-21 14:02:55 +00:00
parent 071f4912a7
commit 1a153d7899
1 changed files with 8 additions and 4 deletions
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12
src/Fl_SVG_Image.cxx
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@ -79,15 +79,19 @@ float Fl_SVG_Image::svg_scaling_(int W, int H) {
#if defined(HAVE_LIBZ)
static char *svg_inflate(const char *fname) {
struct stat b;
fl_stat(fname, &b);
long size = b.st_size;
FILE *in = fl_fopen(fname, "r");
if (!in) return NULL;
unsigned char header[2];
fread(header, 2, 1, in);
int direct = (header[0] != 0x1f || header[1] != 0x8b);
fseek(in, 0, SEEK_END);
long size = ftell(in);
fclose(in);
int fd = fl_open_ext(fname, 1, 0);
if (fd < 0) return NULL;
gzFile gzf = gzdopen(fd, "r");
if (!gzf) return NULL;
int l;
int direct = gzdirect(gzf);
long out_size = direct ? size + 1 : 3*size + 1;
char *out = (char*)malloc(out_size);
char *p = out;