Re: components and figure search paths

[Hans Hagen <pragma@wxs.nl>]

Sanjoy Mahajan wrote:
> Using components (e.g. book chapters), with each component in its own
> directory, say I have
>
> \startproduct onebook
> \project manybooks
> \component 1/chap
> \component 2/chap
> \stopproduct
>
> with this 1/chap.tex:
>
> \startcomponent 1/chap
> \product onebook
> \project manybooks
> \title{One}
> An essential chapter.
> \useexternalfigure[ff][abc.1]
> \placefigure[here][ff]{Some caption}{\externalfigure[ff]}
> \stopcomponent
>
> I'd like to keep the figures and source for a chapter together,
> e.g. abc.mp and abc.1 in 1/chap/ since each chapter has many figures,
> and I edit and test one chapter at a time.
>   
untested extension: \currentcomponentpath

\def\currentcomponentpath{.}

\def\donextlevel#1#2#3#4#5#6#7\\%
  {\pushmacro\currentcomponent
   \pushmacro\currentcomponentpath
   \let\currentcomponent#1%
   \setsystemmode\currentcomponent
   \splitfilename{#1}%
   \ifx\splitoffpath\empty
     \def\currentcomponentpath{.}%
   \else
     \let\currentcomponentpath\splitoffpath
   \fi
   \beforesplitstring#7\at.\to#2\relax % can become path + base
   \ifcase\filelevel\relax
     \starttext
     \def\project     ##1 {#3{##1}}%
     \def\environment ##1 {#4{##1}}%
     \def\product     ##1 {#5{##1}}%
     \def\component   ##1 {#6{##1}}%
   \fi
   \increment\filelevel\relax
   \fullexpandoneargafter\addtocommalist{#1}\loadedfiles}

\def\doprevlevel
  {\popmacro\currentcomponentpath
   \popmacro\currentcomponent
   \setsystemmode\currentcomponent
   \ifnum\filelevel=\plusone
     \expandafter\stoptext
   \else
     \decrement\filelevel\relax
     \expandafter\endinput
   \fi}


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