| 0,0 → 1,118 |
|---|
| #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; |
| } |