I'm trying some tests with the hope of switching to libgsf in
place of low-level fiddling with pkzip structures in reading and
writing zipfiles. So far I'm only partially successful and I'd
much appreciate any guidance.
I have the following C source (with correct headers included, and
followed by a trivial main() function). The idea is to print the
structure of a zipfile and then "unzip" it to a specified
location.
The printing part, "print_kids", is working fine, but the
"unzipping" part is giving me an empty directory "foo". I have
removed error-checking from the following for brevity, but no
errors were triggered when running the full version of the code.
static void print_kids (GsfInfile *infile, int level)
{
int nkids = gsf_infile_num_children(infile);
const char *cname;
GsfInput *child;
gsf_off_t sz;
int i, j;
for (i=0; i<nkids; i++) {
child = gsf_infile_child_by_index(infile, i);
cname = gsf_input_name(child);
sz = gsf_input_size(child);
for (j=0; j<level; j++) {
putchar(' ');
}
printf("child %d: '%s' (%d bytes)\n", i, cname, (int) sz);
print_kids(GSF_INFILE(child), ++level);
g_object_unref(child);
}
}
static int gsf_test_zipread (const char *fname)
{
GsfInput *src, *uncomp;
GsfInfile *zipfile;
GsfOutfile *outfile;
gsf_init();
src = gsf_input_stdio_new(fname, NULL);
zipfile = gsf_infile_zip_new(src, NULL);
g_object_unref(src);
print_kids(zipfile, 0);
uncomp = gsf_input_uncompress(GSF_INPUT(zipfile));
g_object_unref(zipfile);
outfile = gsf_outfile_stdio_new("foo", &err);
gsf_input_seek(uncomp, 0, G_SEEK_SET);
gsf_output_seek(GSF_OUTPUT(outfile), 0, G_SEEK_SET);
if (!gsf_input_copy(uncomp, GSF_OUTPUT(outfile))) {
fprintf(stderr, "gsf_input_copy failed\n");
}
gsf_output_close(GSF_OUTPUT(outfile));
gsf_shutdown();
return 0;
}
Please, what am I doing wrong in gsf_test_zipread?
--
Allin Cottrell
Department of Economics
Wake Forest University
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