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#include "mupdf/xps.h"
static void xps_init_document(fz_context *ctx, xps_document *doc);
xps_part *
xps_new_part(fz_context *ctx, xps_document *doc, char *name, unsigned char *data, int size)
{
xps_part *part;
part = fz_malloc_struct(ctx, xps_part);
fz_try(ctx)
{
part->name = fz_strdup(ctx, name);
part->data = data;
part->size = size;
}
fz_catch(ctx)
{
fz_free(ctx, part->name);
fz_free(ctx, part->data);
fz_free(ctx, part);
fz_rethrow(ctx);
}
return part;
}
void
xps_drop_part(fz_context *ctx, xps_document *doc, xps_part *part)
{
fz_free(ctx, part->name);
fz_free(ctx, part->data);
fz_free(ctx, part);
}
/*
* Read and interleave split parts from a ZIP file.
*/
xps_part *
xps_read_part(fz_context *ctx, xps_document *doc, char *partname)
{
fz_archive *zip = doc->zip;
fz_buffer *buf, *tmp;
char path[2048];
unsigned char *data;
int size;
int count;
char *name;
int seen_last;
name = partname;
if (name[0] == '/')
name ++;
/* All in one piece */
if (fz_has_archive_entry(ctx, zip, name))
{
buf = fz_read_archive_entry(ctx, zip, name);
}
/* Assemble all the pieces */
else
{
buf = fz_new_buffer(ctx, 512);
seen_last = 0;
for (count = 0; !seen_last; ++count)
{
sprintf(path, "%s/[%d].piece", name, count);
if (fz_has_archive_entry(ctx, zip, path))
{
tmp = fz_read_archive_entry(ctx, zip, path);
fz_append_buffer(ctx, buf, tmp);
fz_drop_buffer(ctx, tmp);
}
else
{
sprintf(path, "%s/[%d].last.piece", name, count);
if (fz_has_archive_entry(ctx, zip, path))
{
tmp = fz_read_archive_entry(ctx, zip, path);
fz_append_buffer(ctx, buf, tmp);
fz_drop_buffer(ctx, tmp);
seen_last = 1;
}
else
{
fz_drop_buffer(ctx, buf);
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find all pieces for part '%s'", partname);
}
}
}
}
fz_write_buffer_byte(ctx, buf, 0); /* zero-terminate */
/* take over the data */
data = buf->data;
/* size doesn't include the added zero-terminator */
size = buf->len - 1;
fz_free(ctx, buf);
return xps_new_part(ctx, doc, partname, data, size);
}
int
xps_has_part(fz_context *ctx, xps_document *doc, char *name)
{
char buf[2048];
if (name[0] == '/')
name++;
if (fz_has_archive_entry(ctx, doc->zip, name))
return 1;
sprintf(buf, "%s/[0].piece", name);
if (fz_has_archive_entry(ctx, doc->zip, buf))
return 1;
sprintf(buf, "%s/[0].last.piece", name);
if (fz_has_archive_entry(ctx, doc->zip, buf))
return 1;
return 0;
}
static xps_document *
xps_open_document_with_directory(fz_context *ctx, const char *directory)
{
xps_document *doc;
doc = fz_malloc_struct(ctx, xps_document);
xps_init_document(ctx, doc);
doc->zip = fz_open_directory(ctx, directory);
fz_try(ctx)
{
xps_read_page_list(ctx, doc);
}
fz_catch(ctx)
{
xps_close_document(ctx, doc);
fz_rethrow(ctx);
}
return doc;
}
xps_document *
xps_open_document_with_stream(fz_context *ctx, fz_stream *file)
{
xps_document *doc;
doc = fz_malloc_struct(ctx, xps_document);
xps_init_document(ctx, doc);
fz_try(ctx)
{
doc->zip = fz_open_archive_with_stream(ctx, file);
xps_read_page_list(ctx, doc);
}
fz_catch(ctx)
{
xps_close_document(ctx, doc);
fz_rethrow(ctx);
}
return doc;
}
xps_document *
xps_open_document(fz_context *ctx, const char *filename)
{
char buf[2048];
fz_stream *file;
char *p;
xps_document *doc;
if (strstr(filename, "/_rels/.rels") || strstr(filename, "\\_rels\\.rels"))
{
fz_strlcpy(buf, filename, sizeof buf);
p = strstr(buf, "/_rels/.rels");
if (!p)
p = strstr(buf, "\\_rels\\.rels");
*p = 0;
return xps_open_document_with_directory(ctx, buf);
}
file = fz_open_file(ctx, filename);
fz_try(ctx)
doc = xps_open_document_with_stream(ctx, file);
fz_always(ctx)
fz_drop_stream(ctx, file);
fz_catch(ctx)
fz_rethrow_message(ctx, "cannot load document '%s'", filename);
return doc;
}
void
xps_close_document(fz_context *ctx, xps_document *doc)
{
xps_font_cache *font, *next;
if (!doc)
return;
if (doc->zip)
fz_drop_archive(ctx, doc->zip);
font = doc->font_table;
while (font)
{
next = font->next;
fz_drop_font(ctx, font->font);
fz_free(ctx, font->name);
fz_free(ctx, font);
font = next;
}
xps_drop_page_list(ctx, doc);
fz_free(ctx, doc->start_part);
fz_free(ctx, doc);
}
static int
xps_lookup_metadata(fz_context *ctx, xps_document *doc, const char *key, char *buf, int size)
{
if (!strcmp(key, "format"))
return fz_strlcpy(buf, "XPS", size);
return -1;
}
static void
xps_init_document(fz_context *ctx, xps_document *doc)
{
doc->super.refs = 1;
doc->super.close = (fz_document_close_fn *)xps_close_document;
doc->super.load_outline = (fz_document_load_outline_fn *)xps_load_outline;
doc->super.count_pages = (fz_document_count_pages_fn *)xps_count_pages;
doc->super.load_page = (fz_document_load_page_fn *)xps_load_page;
doc->super.lookup_metadata = (fz_document_lookup_metadata_fn *)xps_lookup_metadata;
}
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