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/*
* Metro physical packages and parts, mapped to a zip archive.
*/
#include "fitz.h"
#include "samus.h"
struct sa_package_s
{
sa_zip *zip;
fz_obj *defaults;
fz_obj *overrides;
};
static fz_error *
readcontenttypes(sa_package *pack)
{
fz_error *error;
sa_xmlparser *parser;
sa_xmlitem *item;
fz_obj *val;
error = fz_newdict(&pack->defaults, 8);
if (error)
return error;
error = fz_newdict(&pack->overrides, 8);
if (error)
return error;
error = sa_openzipentry(pack->zip, "[Content_Types].xml");
if (error)
return error;
error = sa_openxml(&parser, pack->zip->file, 0);
if (error)
goto cleanupzip;
item = sa_xmlnext(parser);
if (item && !strcmp(sa_xmlname(item), "Types"))
{
sa_xmldown(parser);
item = sa_xmlnext(parser);
while (item)
{
if (!strcmp(sa_xmlname(item), "Default"))
{
char *ext = sa_xmlatt(item, "Extension");
char *type = sa_xmlatt(item, "ContentType");
if (ext && type)
{
if (strstr(type, ';'))
strstr(type, ';')[0] = 0;
error = fz_newname(&val, type);
if (error)
goto cleanupxml;
error = fz_dictputs(pack->defaults, ext, val);
if (error)
goto cleanupval;
val = nil;
}
}
if (!strcmp(sa_xmlname(item), "Override"))
{
char *name = sa_xmlatt(item, "PartName");
char *type = sa_xmlatt(item, "ContentType");
if (name && type)
{
if (strstr(type, ';'))
strstr(type, ';')[0] = 0;
error = fz_newname(&val, type);
if (error)
goto cleanupxml;
error = fz_dictputs(pack->overrides, name, val);
if (error)
goto cleanupval;
val = nil;
}
}
item = sa_xmlnext(parser);
}
sa_xmlup(parser);
}
sa_closexml(parser);
sa_closezipentry(pack->zip);
return nil;
cleanupval:
fz_dropobj(val);
cleanupxml:
sa_closexml(parser);
cleanupzip:
sa_closezipentry(pack->zip);
return error;
}
fz_error *
sa_openpackage(sa_package **packp, char *filename)
{
fz_error *error;
sa_package *pack;
pack = fz_malloc(sizeof(sa_package));
if (!pack)
return fz_outofmem;
pack->zip = nil;
pack->defaults = nil;
pack->overrides = nil;
error = sa_openzip(&pack->zip, filename);
if (error)
{
sa_closepackage(pack);
return error;
}
error = readcontenttypes(pack->zip);
if (error)
{
sa_closepackage(pack);
return error;
}
*packp = pack;
return nil;
}
void
sa_closepackage(sa_package *pack)
{
if (pack->zip) sa_closezip(pack->zip);
if (pack->defaults) fz_dropobj(pack->defaults);
if (pack->overrides) fz_dropobj(pack->overrides);
fz_free(pack);
}
/*
* Check access of a part, return either nil or its mime-type.
*/
char *
sa_accesspart(sa_package *pack, char *partname)
{
fz_obj *type;
char *ext;
if (sa_accesszipentry(pack->zip, partname))
{
type = fz_dictgets(pack->overrides, partname);
if (type)
return fz_toname(type);
ext = strrstr(partname, ".");
if (ext)
{
type = fz_dictgets(pack->defaults, ext + 1);
if (type)
return fz_toname(type);
}
}
return nil;
}
/*
* Open a part for reading. It is NOT safe to open more than one
* part at a time.
*/
fz_error *
sa_openpart(fz_file **filep, sa_package *pack, char *partname)
{
*filep = pack->zip->file;
return sa_openzipentry(pack->zip, partname);
}
/*
* Call this instead of fz_closefile()
* FIXME i gotto do something about this icky file API
*/
void sa_closepart(sa_package *pack, fz_file *file)
{
sa_closezipentry(pack->zip);
}
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