%% Support for some primitives defined in pdfTeX %% %% \pdfstrcmp: need for LaTeX3 %% In comparison, Japanese characters will be always encoded in UTF-8. %% %% \pdffilemoddate and co.: for standalone package %% (\pdfcreationdate, \pdffilemoddate, \pdffilesize) %% %% \pdfsavepos and co. %% (\pdfsavepos, \pdfpage{width,height}, \pdflast{x,y}pos) %% papersize special automatically sets \pdfpage{width,height} (quick hack). @x @* \[12] Displaying boxes. @y @@; @* \[12] Displaying boxes. @z @x @d dimen_pars=23 {total number of dimension parameters} @y @d pdf_page_width_code=23 {page width} @d pdf_page_height_code=24 {page height} @d dimen_pars=25 {total number of dimension parameters} @z @x @d emergency_stretch==dimen_par(emergency_stretch_code) @y @d emergency_stretch==dimen_par(emergency_stretch_code) @d pdf_page_width==dimen_par(pdf_page_width_code) @d pdf_page_height==dimen_par(pdf_page_height_code) @z @x emergency_stretch_code:print_esc("emergencystretch"); @y emergency_stretch_code:print_esc("emergencystretch"); pdf_page_width_code: print_esc("pdfpagewidth"); pdf_page_height_code: print_esc("pdfpageheight"); @z @x @d badness_code=input_line_no_code+1 {code for \.{\\badness}} @y @d badness_code=input_line_no_code+1 {code for \.{\\badness}} @d pdf_last_x_pos_code=badness_code+1 {code for \.{\\pdflastxpos}} @d pdf_last_y_pos_code=pdf_last_x_pos_code+1 {code for \.{\\pdflastypos}} @z @x @d eTeX_int=badness_code+1 {first of \eTeX\ codes for integers} @y @d eTeX_int=pdf_last_y_pos_code+1 {first of \eTeX\ codes for integers} @z @x @d etex_convert_codes=etex_convert_base+1 {end of \eTeX's command codes} @y @d pdf_strcmp_code = etex_convert_base+1 {command code for \.{\\pdfstrcmp}} @d pdf_creation_date_code = etex_convert_base+2 {command code for \.{\\pdfcreationdate}} @d pdf_file_mod_date_code = etex_convert_base+3 {command code for \.{\\pdffilemoddate}} @d pdf_file_size_code = etex_convert_base+4 {command code for \.{\\pdffilesize}} @d etex_convert_codes=etex_convert_base+5 {end of \eTeX's command codes} @z @x eTeX_revision_code: print_esc("eTeXrevision"); @y eTeX_revision_code: print_esc("eTeXrevision"); pdf_strcmp_code: print_esc("pdfstrcmp"); pdf_creation_date_code: print_esc("pdfcreationdate"); pdf_file_mod_date_code: print_esc("pdffilemoddate"); pdf_file_size_code: print_esc("pdffilesize"); @z @x @p procedure conv_toks; @y The extra temp string |u| is needed because |pdf_scan_ext_toks| incorporates any pending string in its output. In order to save such a pending string, we have to create a temporary string that is destroyed immediately after. @d save_cur_string==if str_start[str_ptr]0 then decr(str_ptr) @p procedure conv_toks; @z @x @!save_scanner_status:small_number; {|scanner_status| upon entry} @y @!save_scanner_status:small_number; {|scanner_status| upon entry} @!save_def_ref: pointer; {|def_ref| upon entry, important if inside `\.{\\message}'} @!save_warning_index: pointer; @!u: str_number; {saved current string string} @!s: str_number; {first temp string} @z @x begin c:=cur_chr; @; @y begin c:=cur_chr; @; u:=0; { will become non-nil if a string is already being built} @z @x eTeX_revision_code: do_nothing; @y eTeX_revision_code: do_nothing; pdf_strcmp_code: begin save_scanner_status := scanner_status; save_def_ref := def_ref; save_cur_string; compare_strings; def_ref := save_def_ref; scanner_status := save_scanner_status; restore_cur_string; end; pdf_creation_date_code: begin b := pool_ptr; getcreationdate; link(garbage) := str_toks(b); ins_list(link(temp_head)); return; end; pdf_file_mod_date_code: begin save_scanner_status := scanner_status; save_warning_index := warning_index; save_def_ref := def_ref; save_cur_string; scan_pdf_ext_toks; s := tokens_to_string(def_ref); delete_token_ref(def_ref); def_ref := save_def_ref; warning_index := save_warning_index; scanner_status := save_scanner_status; b := pool_ptr; getfilemoddate(s); link(garbage) := str_toks(b); flush_str(s); ins_list(link(temp_head)); restore_cur_string; return; end; pdf_file_size_code: begin save_scanner_status := scanner_status; save_warning_index := warning_index; save_def_ref := def_ref; save_cur_string; scan_pdf_ext_toks; s := tokens_to_string(def_ref); delete_token_ref(def_ref); def_ref := save_def_ref; warning_index := save_warning_index; scanner_status := save_scanner_status; b := pool_ptr; getfilesize(s); link(garbage) := str_toks(b); flush_str(s); ins_list(link(temp_head)); restore_cur_string; return; end; @z @x eTeX_revision_code: print(eTeX_revision); @y eTeX_revision_code: print(eTeX_revision); pdf_strcmp_code: print_int(cur_val); @z @x @ @= @y @ @= @; @z @x @!old_setting:0..max_selector; {saved |selector| setting} @y @!old_setting:0..max_selector; {saved |selector| setting} @!t: scaled; @z @x fix_date_and_time;@/ @y fix_date_and_time;@/ isprint_utf8:=false; @z @x @d set_language_code=5 {command modifier for \.{\\setlanguage}} @y @d set_language_code=5 {command modifier for \.{\\setlanguage}} @d TeX_extension_end=5 @d pdf_save_pos_node=TeX_extension_end+1 @z @x set_language_code:print_esc("setlanguage"); @y set_language_code:print_esc("setlanguage"); pdf_save_pos_node: print_esc("pdfsavepos"); @z @x set_language_code:@; @y set_language_code:@; pdf_save_pos_node: @; @z @x print_int(what_lhm(p)); print_char(","); print_int(what_rhm(p)); print_char(")"); end; @y print_int(what_lhm(p)); print_char(","); print_int(what_rhm(p)); print_char(")"); end; pdf_save_pos_node: print_esc("pdfsavepos"); @z @x close_node,language_node: begin r:=get_node(small_node_size); words:=small_node_size; end; @y close_node,language_node: begin r:=get_node(small_node_size); words:=small_node_size; end; pdf_save_pos_node: r := get_node(small_node_size); @z @x close_node,language_node: free_node(p,small_node_size); @y close_node,language_node: free_node(p,small_node_size); pdf_save_pos_node: free_node(p, small_node_size); @z @x procedure special_out(@!p:pointer); var old_setting:0..max_selector; {holds print |selector|} @!k:pool_pointer; {index into |str_pool|} @y procedure special_out(@!p:pointer); label done; var old_setting:0..max_selector; {holds print |selector|} @!k:pool_pointer; {index into |str_pool|} @!s,@!t,@!cw: scaled; @!bl: boolean; @!i: small_number; @z @x pool_ptr:=str_start[str_ptr]; {erase the string} @y @; done: pool_ptr:=str_start[str_ptr]; {erase the string} @z @x language_node:do_nothing; @y language_node:do_nothing; pdf_save_pos_node: @; @z @x primitive("eTeXrevision",convert,eTeX_revision_code);@/ @!@:eTeX_revision_}{\.{\\eTeXrevision} primitive@> @y primitive("eTeXrevision",convert,eTeX_revision_code);@/ @!@:eTeX_revision_}{\.{\\eTeXrevision} primitive@> primitive("pdfstrcmp",convert,pdf_strcmp_code);@/ @!@:pdf_strcmp_}{\.{\\pdfstrcmp} primitive@> primitive("pdfcreationdate",convert,pdf_creation_date_code);@/ @!@:pdf_creation_date_}{\.{\\pdfcreationdate} primitive@> primitive("pdffilemoddate",convert,pdf_file_mod_date_code);@/ @!@:pdf_file_mod_date_}{\.{\\pdffilemoddate} primitive@> primitive("pdffilesize",convert,pdf_file_size_code);@/ @!@:pdf_file_size_}{\.{\\pdffilesize} primitive@> primitive("pdfsavepos",extension,pdf_save_pos_node);@/ @!@:pdf_save_pos_}{\.{\\pdfsavepos} primitive@> primitive("pdfpagewidth",assign_dimen,dimen_base+pdf_page_width_code);@/ @!@:pdf_page_width_}{\.{\\pdfpagewidth} primitive@> primitive("pdfpageheight",assign_dimen,dimen_base+pdf_page_height_code);@/ @!@:pdf_page_height_}{\.{\\pdfpageheight} primitive@> primitive("pdflastxpos",last_item,pdf_last_x_pos_code);@/ @!@:pdf_last_x_pos_}{\.{\\pdflastxpos} primitive@> primitive("pdflastypos",last_item,pdf_last_y_pos_code);@/ @!@:pdf_last_y_pos_}{\.{\\pdflastypos} primitive@> @z @x eTeX_version_code: print_esc("eTeXversion"); @y eTeX_version_code: print_esc("eTeXversion"); pdf_last_x_pos_code: print_esc("pdflastxpos"); pdf_last_y_pos_code: print_esc("pdflastypos"); @z @x eTeX_version_code: cur_val:=eTeX_version; @y eTeX_version_code: cur_val:=eTeX_version; pdf_last_x_pos_code: cur_val := pdf_last_x_pos; pdf_last_y_pos_code: cur_val := pdf_last_y_pos; @z @x procedure print_kanji(@!s:KANJI_code); {prints a single character} begin if s>255 then begin print_char(Hi(s)); print_char(Lo(s)); end else print_char(s); end; @y procedure print_kanji(@!s:integer); {prints a single character} begin if s>255 then begin if isprint_utf8 then begin s:=UCStoUTF8(toUCS(s)); if BYTE1(s)<>0 then print_char(BYTE1(s)); if BYTE2(s)<>0 then print_char(BYTE2(s)); if BYTE3(s)<>0 then print_char(BYTE3(s)); print_char(BYTE4(s)); end else begin print_char(Hi(s)); print_char(Lo(s)); end; end else print_char(s); end; @z @x @* \[54] System-dependent changes. @y @* \[54/pdf\TeX] System-dependent changes for {\tt\char"5Cpdfstrcmp}. @d call_func(#) == begin if # <> 0 then do_nothing end @d flushable(#) == (# = str_ptr - 1) @= @!isprint_utf8: boolean; @ @= procedure pdf_error(t, p: str_number); begin normalize_selector; print_err("pdfTeX error"); if t <> 0 then begin print(" ("); print(t); print(")"); end; print(": "); print(p); succumb; end; @ @= procedure compare_strings; {to implement \.{\\pdfstrcmp}} label done; var s1, s2: str_number; i1, i2, j1, j2: pool_pointer; begin call_func(scan_toks(false, true)); isprint_utf8:=true; s1 := tokens_to_string(def_ref); isprint_utf8:=false; delete_token_ref(def_ref); call_func(scan_toks(false, true)); isprint_utf8:=true; s2 := tokens_to_string(def_ref); isprint_utf8:=false; delete_token_ref(def_ref); i1 := str_start[s1]; j1 := str_start[s1 + 1]; i2 := str_start[s2]; j2 := str_start[s2 + 1]; while (i1 < j1) and (i2 < j2) do begin if str_pool[i1] < str_pool[i2] then begin cur_val := -1; goto done; end; if str_pool[i1] > str_pool[i2] then begin cur_val := 1; goto done; end; incr(i1); incr(i2); end; if (i1 = j1) and (i2 = j2) then cur_val := 0 else if i1 < j1 then cur_val := 1 else cur_val := -1; done: flush_str(s2); flush_str(s1); cur_val_level := int_val; end; @ Next, we implement \.{\\pdfsavepos} and related primitives. @= @!cur_page_width: scaled; {width of page being shipped} @!cur_page_height: scaled; {height of page being shipped} @!pdf_last_x_pos: integer; @!pdf_last_y_pos: integer; @ @= begin new_whatsit(pdf_save_pos_node, small_node_size); end @ @= begin case dvi_dir of dir_yoko: begin pdf_last_x_pos := cur_h; pdf_last_y_pos := cur_v; end; dir_tate: begin pdf_last_x_pos := -cur_v; pdf_last_y_pos := cur_h; end; dir_dtou: begin pdf_last_x_pos := cur_v; pdf_last_y_pos := -cur_h; end; endcases; pdf_last_x_pos := pdf_last_x_pos + 4736286; case dvi_dir of dir_tate,dir_dtou: pdf_last_y_pos := cur_page_width - pdf_last_y_pos - 4736286; dir_yoko: pdf_last_y_pos := cur_page_height - pdf_last_y_pos - 4736286; endcases; {4736286 = 1in, the funny DVI origin offset} end @ @= if pdf_page_height <> 0 then cur_page_height := pdf_page_height else cur_page_height := height(p) + depth(p) + 2*v_offset + 2*4736286; if pdf_page_width <> 0 then cur_page_width := pdf_page_width else cur_page_width := width(p) + 2*h_offset + 2*4736286; if (type(p)=dir_node) then if (box_dir(list_ptr(p))=dir_tate)or(box_dir(list_ptr(p))=dir_dtou) then begin t:=cur_page_height; cur_page_height:=cur_page_width; cur_page_width:=t; end; @ Of course \epTeX\ can produce a \.{DVI} file only, not a PDF file. A \.{DVI} file does not have the information of the page height, which is needed to implement \.{\\pdflastypos} correctly. To keep the information of the page height, I (H.~Kitagawa) adopted \.{\\pdfpageheight} primitive from pdf\TeX. However, in p\TeX (and \hbox{\epTeX}), the papersize special \.{\\special\{papersize=|width|,|height|\}} is commonly used for specifying page width/height. Hence, I decided that the papersize special also changes the value of \.{\\pdfpagewidth} and \.{\\pdfpageheight}. The following routine does this. In present implementation, the ``valid'' papersize special, which can be interpreted by this routine, is in the following form: $$\hbox{\.{\\special\char"7Bpapersize=}$x$\.{pt,}$y$\.{pt\char"7D}}$$ where $x$\thinspace pt and $y$\thinspace pt are positive dimensions which \TeX\ can comprehend. No spaces are allowed in the above form, and only ``pt'' is allowed for unit, for simplicity. @d ifps==if k=pool_ptr then goto done else if @d sop(#)==so(str_pool[(#)]) @= if pool_ptr-str_start[str_ptr]<=10 then goto done; k:=str_start[str_ptr]; if (sop(k+0)<>'p')or(sop(k+1)<>'a')or(sop(k+2)<>'p')or (sop(k+3)<>'e')or(sop(k+4)<>'r')or(sop(k+5)<>'s')or (sop(k+6)<>'i')or(sop(k+7)<>'z')or(sop(k+8)<>'e') then goto done; k:=k+9; ifps sop(k)='=' then incr(k); @; incr(k); ifps sop(k)<>',' then goto done else incr(k); cw:=t; @; geq_word_define(dimen_base+pdf_page_width_code,cw); geq_word_define(dimen_base+pdf_page_height_code,t); cur_page_height := t; cur_page_width := cw; if (dvi_dir=dir_tate)or(dvi_dir=dir_dtou) then begin t:=cur_page_height; cur_page_height:=cur_page_width; cur_page_width:=t; end; @ @= s:=1; t:=0; bl:=true; while (k='0')and (sop(k)<='9') then begin t:=10*t+sop(k)-'0'; incr(k); end else begin bl:=false; end; end; t:=t*unity; ifps sop(k)='.' then begin incr(k); bl:=true; i:=0; while (k='0')and (sop(k)<='9') then begin dig[i]:=sop(k)-'0'; incr(k); incr(i); end else begin bl:=false; incr(k); incr(i); end; end; t:=s*(t+round_decimals(i-1)); end else if (sop(k)>='0')and(sop(k)<='9') then goto done else begin t:=s*t; incr(k); end; ifps sop(k-1)<>'p' then goto done; ifps sop(k)<>'t' then goto done; @ Finally, we declare some routine needed for \.{\\pdffilemoddate}. @= @!isprint_utf8: boolean; @!last_tokens_string: str_number; {the number of the most recently string created by |tokens_to_string|} @ @= procedure scan_pdf_ext_toks; begin call_func(scan_toks(false, true)); {like \.{\\special}} end; @ @= function tokens_to_string(p: pointer): str_number; {return a string from tokens list} begin if selector = new_string then pdf_error("tokens", "tokens_to_string() called while selector = new_string"); old_setting:=selector; selector:=new_string; show_token_list(link(p),null,pool_size-pool_ptr); selector:=old_setting; last_tokens_string := make_string; tokens_to_string := last_tokens_string; end; procedure flush_str(s: str_number); {flush a string if possible} begin if flushable(s) then flush_string; end; @* \[54] System-dependent changes. @z