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| author | Siri Hansen <[email protected]> | 2012-11-20 12:30:45 +0100 |
|---|---|---|
| committer | Siri Hansen <[email protected]> | 2012-11-20 12:30:45 +0100 |
| commit | ee65e005b0e18d92d786b14e2dd3cf7b8584ca27 (patch) | |
| tree | 5d627dc58ad75dcac7ad3958e6a8616d206c1c80 /lib/test_server/src/erl2html2.erl | |
| parent | a908160088b654e436bdcdd32369c29603ca5fa7 (diff) | |
| download | otp-ee65e005b0e18d92d786b14e2dd3cf7b8584ca27.tar.gz otp-ee65e005b0e18d92d786b14e2dd3cf7b8584ca27.tar.bz2 otp-ee65e005b0e18d92d786b14e2dd3cf7b8584ca27.zip | |
[test_server] Minimize memory usage in erl2html2:convert/[2,3]
Reading form by form and line by line, instead of reading the complete
file in one go.
Diffstat (limited to 'lib/test_server/src/erl2html2.erl')
| -rw-r--r-- | lib/test_server/src/erl2html2.erl | 111 |
1 files changed, 66 insertions, 45 deletions
diff --git a/lib/test_server/src/erl2html2.erl b/lib/test_server/src/erl2html2.erl index 290acc5040..9c459c05d4 100644 --- a/lib/test_server/src/erl2html2.erl +++ b/lib/test_server/src/erl2html2.erl @@ -42,18 +42,31 @@ convert(File, Dest) -> "<body bgcolor=\"white\" text=\"black\"" " link=\"blue\" vlink=\"purple\" alink=\"red\">\n"], convert(File, Dest, Header). - + + convert(File, Dest, Header) -> %% statistics(runtime), case parse_file(File) of {ok,Functions} -> - %% io:format("~p~n",[Functions]), - case file:read_file(File) of - {ok,Bin} -> - {Html,Lines} = build_html(Bin,Functions), - Html1 = [Header,"<pre>\n",Html,"</pre>\n", - footer(Lines),"</body>\n</html>\n"], - file:write_file(Dest,Html1); + %% {_, Time1} = statistics(runtime), + %% io:format("Parsed file in ~.2f Seconds.~n",[Time1/1000]), + case file:open(File,[raw,{read_ahead,10000}]) of + {ok,SFd} -> + case file:open(Dest,[write,raw]) of + {ok,DFd} -> + file:write(DFd,[Header,"<pre>\n"]), + Lines = build_html(SFd,DFd,Functions), + file:write(DFd,["</pre>\n",footer(), + "</body>\n</html>\n"]), + %% {_, Time2} = statistics(runtime), + %% io:format("Converted ~p lines in ~.2f Seconds.~n", + %% [Lines, Time2/1000]), + file:close(SFd), + file:close(DFd), + ok; + Error -> + Error + end; Error -> Error end; @@ -69,41 +82,55 @@ convert(File, Dest, Header) -> %%% All function clauses are also marked in order to allow %%% possibly_enhance/2 to write these in bold. parse_file(File) -> - case epp:parse_file(File,[],[]) of - {ok,Forms} -> - {ok,get_functions(Forms,File,false)}; - Error -> - Error + case epp:open(File, [], []) of + {ok,Epp} -> + Forms = parse_file(Epp,File,false), + epp:close(Epp), + {ok,Forms}; + {error,E} -> + {error,E} end. -get_functions([{attribute,_,file,{File,_}}|Forms],File,_) -> - get_functions(Forms,File,true); -get_functions([{attribute,_,file,{_OtherFile,_}}|Forms],File,_) -> - get_functions(Forms,File,false); -get_functions([{function,L,F,A,[_|C]}|Forms],File,true) -> - Clauses = [{clause,CL} || {clause,CL,_,_,_} <- C], - [{atom_to_list(F),A,L} | Clauses] ++ get_functions(Forms,File,true); -get_functions([_|Forms],File,InCorrectFile) -> - get_functions(Forms,File,InCorrectFile); -get_functions([],_,_) -> - []. + +parse_file(Epp,File,InCorrectFile) -> + case epp:parse_erl_form(Epp) of + {ok,Form} -> + case Form of + {attribute,_,file,{File,_}} -> + parse_file(Epp,File,true); + {attribute,_,file,{_OtherFile,_}} -> + parse_file(Epp,File,false); + {function,L,F,A,[_|C]} when InCorrectFile -> + Clauses = [{clause,CL} || {clause,CL,_,_,_} <- C], + [{atom_to_list(F),A,L} | Clauses] ++ + parse_file(Epp,File,true); + _ -> + parse_file(Epp,File,InCorrectFile) + end; + {error,_E} -> + parse_file(Epp,File,InCorrectFile); + {eof,_Location} -> + [] + end. %%%----------------------------------------------------------------- %%% Add a link target for each line and one for each function definition. -build_html(Bin,Functions) -> - build_html(binary:split(Bin,<<"\n">>),1,Functions,false,[]). +build_html(SFd,DFd,Functions) -> + build_html(SFd,DFd,file:read_line(SFd),1,Functions,false). -build_html(Split,L,[{F,A,L}|Functions],_IsFuncDef,Acc) -> +build_html(SFd,DFd,{ok,Str},L,[{F,A,L}|Functions],_IsFuncDef) -> FALink = http_uri:encode(F++"-"++integer_to_list(A)), - NewAcc = [Acc,"<a name=\"",FALink,"\"/>"], - build_html(Split,L,Functions,true,NewAcc); -build_html(Split,L,[{clause,L}|Functions],_IsFuncDef,Acc) -> - build_html(Split,L,Functions,true,Acc); -build_html([Line,Bin],L,Functions,IsFuncDef,Acc) -> - NewAcc = [Acc,line_number(L),line(binary_to_list(Line),IsFuncDef),$\n], - build_html(binary:split(Bin,<<"\n">>),L+1,Functions,false,NewAcc); -build_html([Line],L,Functions,IsFuncDef,Acc) -> - {[Acc,line_number(L),line(binary_to_list(Line),IsFuncDef)],L}. + file:write(DFd,["<a name=\"",FALink,"\"/>"]), + build_html(SFd,DFd,{ok,Str},L,Functions,true); +build_html(SFd,DFd,{ok,Str},L,[{clause,L}|Functions],_IsFuncDef) -> + build_html(SFd,DFd,{ok,Str},L,Functions,true); +build_html(SFd,DFd,{ok,Str},L,Functions,IsFuncDef) -> + LStr = line_number(L), + Str1 = line(Str,IsFuncDef), + file:write(DFd,[LStr,Str1]), + build_html(SFd,DFd,file:read_line(SFd),L+1,Functions,false); +build_html(_SFd,_DFd,eof,L,_Functions,_IsFuncDef) -> + L. line_number(L) -> LStr = integer_to_list(L), @@ -143,7 +170,7 @@ possibly_enhance(Str,true) -> {F,A} -> ["<b>",F,"</b>",A] end; possibly_enhance([$%|_]=Str,_) -> - ["<i>",Str,"</i>"]; + ["<i>",Str--"\n","</i>","\n"]; possibly_enhance([$-|_]=Str,_) -> possibly_enhance(Str,true); possibly_enhance(Str,false) -> @@ -151,11 +178,5 @@ possibly_enhance(Str,false) -> %%%----------------------------------------------------------------- %%% End of the file -footer(_Lines) -> - "". - %% {_, Time} = statistics(runtime), - %% io:format("Converted ~p lines in ~.2f Seconds.~n", - %% [_Lines, Time/1000]), - %% S = "<i>The transformation of this file (~p lines) took ~.2f seconds</i>", - %% F = lists:flatten(io_lib:format(S, [_Lines, Time/1000])), - %% ["<hr size=1>",F,"<br>\n"]. +footer() -> + "". |