forked from KolibriOS/kolibrios
119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
|
#include "fitz.h"
|
||
|
|
#include "mupdf.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Load CMap stream in PDF file
|
||
|
|
*/
|
||
|
|
fz_error
|
||
|
|
pdf_load_embedded_cmap(pdf_cmap **cmapp, pdf_xref *xref, fz_obj *stmobj)
|
||
|
|
{
|
||
|
|
fz_error error = fz_okay;
|
||
|
|
fz_stream *file = NULL;
|
||
|
|
pdf_cmap *cmap = NULL;
|
||
|
|
pdf_cmap *usecmap;
|
||
|
|
fz_obj *wmode;
|
||
|
|
fz_obj *obj;
|
||
|
|
|
||
|
|
if ((*cmapp = pdf_find_item(xref->store, pdf_drop_cmap, stmobj)))
|
||
|
|
{
|
||
|
|
pdf_keep_cmap(*cmapp);
|
||
|
|
return fz_okay;
|
||
|
|
}
|
||
|
|
|
||
|
|
error = pdf_open_stream(&file, xref, fz_to_num(stmobj), fz_to_gen(stmobj));
|
||
|
|
if (error)
|
||
|
|
{
|
||
|
|
error = fz_rethrow(error, "cannot open cmap stream (%d %d R)", fz_to_num(stmobj), fz_to_gen(stmobj));
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
error = pdf_parse_cmap(&cmap, file);
|
||
|
|
if (error)
|
||
|
|
{
|
||
|
|
error = fz_rethrow(error, "cannot parse cmap stream (%d %d R)", fz_to_num(stmobj), fz_to_gen(stmobj));
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
fz_close(file);
|
||
|
|
|
||
|
|
wmode = fz_dict_gets(stmobj, "WMode");
|
||
|
|
if (fz_is_int(wmode))
|
||
|
|
pdf_set_wmode(cmap, fz_to_int(wmode));
|
||
|
|
|
||
|
|
obj = fz_dict_gets(stmobj, "UseCMap");
|
||
|
|
if (fz_is_name(obj))
|
||
|
|
{
|
||
|
|
error = pdf_load_system_cmap(&usecmap, fz_to_name(obj));
|
||
|
|
if (error)
|
||
|
|
{
|
||
|
|
error = fz_rethrow(error, "cannot load system usecmap '%s'", fz_to_name(obj));
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
pdf_set_usecmap(cmap, usecmap);
|
||
|
|
pdf_drop_cmap(usecmap);
|
||
|
|
}
|
||
|
|
else if (fz_is_indirect(obj))
|
||
|
|
{
|
||
|
|
error = pdf_load_embedded_cmap(&usecmap, xref, obj);
|
||
|
|
if (error)
|
||
|
|
{
|
||
|
|
error = fz_rethrow(error, "cannot load embedded usecmap (%d %d R)", fz_to_num(obj), fz_to_gen(obj));
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
pdf_set_usecmap(cmap, usecmap);
|
||
|
|
pdf_drop_cmap(usecmap);
|
||
|
|
}
|
||
|
|
|
||
|
|
pdf_store_item(xref->store, pdf_keep_cmap, pdf_drop_cmap, stmobj, cmap);
|
||
|
|
|
||
|
|
*cmapp = cmap;
|
||
|
|
return fz_okay;
|
||
|
|
|
||
|
|
cleanup:
|
||
|
|
if (file)
|
||
|
|
fz_close(file);
|
||
|
|
if (cmap)
|
||
|
|
pdf_drop_cmap(cmap);
|
||
|
|
return error; /* already rethrown */
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Create an Identity-* CMap (for both 1 and 2-byte encodings)
|
||
|
|
*/
|
||
|
|
pdf_cmap *
|
||
|
|
pdf_new_identity_cmap(int wmode, int bytes)
|
||
|
|
{
|
||
|
|
pdf_cmap *cmap = pdf_new_cmap();
|
||
|
|
sprintf(cmap->cmap_name, "Identity-%c", wmode ? 'V' : 'H');
|
||
|
|
pdf_add_codespace(cmap, 0x0000, 0xffff, bytes);
|
||
|
|
pdf_map_range_to_range(cmap, 0x0000, 0xffff, 0);
|
||
|
|
pdf_sort_cmap(cmap);
|
||
|
|
pdf_set_wmode(cmap, wmode);
|
||
|
|
return cmap;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Load predefined CMap from system.
|
||
|
|
*/
|
||
|
|
fz_error
|
||
|
|
pdf_load_system_cmap(pdf_cmap **cmapp, char *cmap_name)
|
||
|
|
{
|
||
|
|
pdf_cmap *usecmap;
|
||
|
|
pdf_cmap *cmap;
|
||
|
|
|
||
|
|
cmap = pdf_find_builtin_cmap(cmap_name);
|
||
|
|
if (!cmap)
|
||
|
|
return fz_throw("no builtin cmap file: %s", cmap_name);
|
||
|
|
|
||
|
|
if (cmap->usecmap_name[0] && !cmap->usecmap)
|
||
|
|
{
|
||
|
|
usecmap = pdf_find_builtin_cmap(cmap->usecmap_name);
|
||
|
|
if (!usecmap)
|
||
|
|
return fz_throw("nu builtin cmap file: %s", cmap->usecmap_name);
|
||
|
|
pdf_set_usecmap(cmap, usecmap);
|
||
|
|
}
|
||
|
|
|
||
|
|
*cmapp = cmap;
|
||
|
|
return fz_okay;
|
||
|
|
}
|