static void pdf_parse_wmode(fz_context *ctx, pdf_cmap *cmap, fz_stream *file) { pdf_lexbuf buf; int tok; buf.size = PDF_LEXBUF_SMALL; tok = pdf_lex_cmap(file, &buf); /* RJW: Lost debugging: "syntaxerror in cmap" */ if (tok == PDF_TOK_INT) pdf_set_cmap_wmode(ctx, cmap, buf.i); else fz_warn(ctx, "expected integer after WMode in cmap"); }
/* * Create an Identity-* CMap (for both 1 and 2-byte encodings) */ pdf_cmap * pdf_new_identity_cmap(fz_context *ctx, int wmode, int bytes) { pdf_cmap *cmap = pdf_new_cmap(ctx); fz_try(ctx) { sprintf(cmap->cmap_name, "Identity-%c", wmode ? 'V' : 'H'); pdf_add_codespace(ctx, cmap, 0x0000, 0xffff, bytes); pdf_map_range_to_range(ctx, cmap, 0x0000, 0xffff, 0); pdf_sort_cmap(ctx, cmap); pdf_set_cmap_wmode(ctx, cmap, wmode); } fz_catch(ctx) { pdf_drop_cmap(ctx, cmap); fz_rethrow(ctx); } return cmap; }
/* * Create an Identity-* CMap (for both 1 and 2-byte encodings) */ pdf_cmap * pdf_new_identity_cmap(fz_context *ctx, int wmode, int bytes) { pdf_cmap *cmap = pdf_new_cmap(ctx); fz_try(ctx) { unsigned int high = (1 << (bytes * 8)) - 1; sprintf(cmap->cmap_name, "Identity-%c", wmode ? 'V' : 'H'); pdf_add_codespace(ctx, cmap, 0, high, bytes); pdf_map_range_to_range(ctx, cmap, 0, high, 0); pdf_sort_cmap(ctx, cmap); pdf_set_cmap_wmode(ctx, cmap, wmode); } fz_catch(ctx) { pdf_drop_cmap(ctx, cmap); fz_rethrow(ctx); } return cmap; }
/* * Load CMap stream in PDF file */ pdf_cmap * pdf_load_embedded_cmap(pdf_document *doc, pdf_obj *stmobj) { fz_stream *file = NULL; pdf_cmap *cmap = NULL; pdf_cmap *usecmap; pdf_obj *wmode; pdf_obj *obj = NULL; fz_context *ctx = doc->ctx; int phase = 0; fz_var(phase); fz_var(obj); fz_var(file); fz_var(cmap); if (pdf_obj_marked(stmobj)) fz_throw(ctx, FZ_ERROR_GENERIC, "Recursion in embedded cmap"); if ((cmap = pdf_find_item(ctx, pdf_free_cmap_imp, stmobj)) != NULL) { return cmap; } fz_try(ctx) { file = pdf_open_stream(doc, pdf_to_num(stmobj), pdf_to_gen(stmobj)); phase = 1; cmap = pdf_load_cmap(ctx, file); phase = 2; fz_close(file); file = NULL; wmode = pdf_dict_gets(stmobj, "WMode"); if (pdf_is_int(wmode)) pdf_set_cmap_wmode(ctx, cmap, pdf_to_int(wmode)); obj = pdf_dict_gets(stmobj, "UseCMap"); if (pdf_is_name(obj)) { usecmap = pdf_load_system_cmap(ctx, pdf_to_name(obj)); pdf_set_usecmap(ctx, cmap, usecmap); pdf_drop_cmap(ctx, usecmap); } else if (pdf_is_indirect(obj)) { phase = 3; pdf_mark_obj(obj); usecmap = pdf_load_embedded_cmap(doc, obj); pdf_unmark_obj(obj); phase = 4; pdf_set_usecmap(ctx, cmap, usecmap); pdf_drop_cmap(ctx, usecmap); } pdf_store_item(ctx, stmobj, cmap, pdf_cmap_size(ctx, cmap)); } fz_catch(ctx) { if (file) fz_close(file); if (cmap) pdf_drop_cmap(ctx, cmap); if (phase < 1) fz_rethrow_message(ctx, "cannot open cmap stream (%d %d R)", pdf_to_num(stmobj), pdf_to_gen(stmobj)); else if (phase < 2) fz_rethrow_message(ctx, "cannot parse cmap stream (%d %d R)", pdf_to_num(stmobj), pdf_to_gen(stmobj)); else if (phase < 3) fz_rethrow_message(ctx, "cannot load system usecmap '%s'", pdf_to_name(obj)); else { if (phase == 3) pdf_unmark_obj(obj); fz_rethrow_message(ctx, "cannot load embedded usecmap (%d %d R)", pdf_to_num(obj), pdf_to_gen(obj)); } } return cmap; }
/* * Load CMap stream in PDF file */ pdf_cmap * pdf_load_embedded_cmap(fz_context *ctx, pdf_document *doc, pdf_obj *stmobj) { fz_stream *file = NULL; pdf_cmap *cmap = NULL; pdf_cmap *usecmap = NULL; pdf_obj *obj; fz_var(file); fz_var(cmap); fz_var(usecmap); if (pdf_obj_marked(ctx, stmobj)) fz_throw(ctx, FZ_ERROR_GENERIC, "Recursion in embedded cmap"); if ((cmap = pdf_find_item(ctx, pdf_drop_cmap_imp, stmobj)) != NULL) return cmap; fz_try(ctx) { file = pdf_open_stream(ctx, stmobj); cmap = pdf_load_cmap(ctx, file); obj = pdf_dict_get(ctx, stmobj, PDF_NAME_WMode); if (pdf_is_int(ctx, obj)) pdf_set_cmap_wmode(ctx, cmap, pdf_to_int(ctx, obj)); obj = pdf_dict_get(ctx, stmobj, PDF_NAME_UseCMap); if (pdf_is_name(ctx, obj)) { usecmap = pdf_load_system_cmap(ctx, pdf_to_name(ctx, obj)); pdf_set_usecmap(ctx, cmap, usecmap); } else if (pdf_is_indirect(ctx, obj)) { if (pdf_mark_obj(ctx, obj)) fz_throw(ctx, FZ_ERROR_GENERIC, "recursive CMap"); fz_try(ctx) usecmap = pdf_load_embedded_cmap(ctx, doc, obj); fz_always(ctx) pdf_unmark_obj(ctx, obj); fz_catch(ctx) fz_rethrow(ctx); pdf_set_usecmap(ctx, cmap, usecmap); } pdf_store_item(ctx, stmobj, cmap, pdf_cmap_size(ctx, cmap)); } fz_always(ctx) { fz_drop_stream(ctx, file); pdf_drop_cmap(ctx, usecmap); } fz_catch(ctx) { pdf_drop_cmap(ctx, cmap); fz_rethrow(ctx); } return cmap; }