[Tex/LaTex] Combining different projects into one (papers into PhD Thesis)

includeinputpaths

My question is similar to this one, but I have a problem with relative paths when including files.

Assume I have three projects which all start with

\documentclass[12pt,a4paper]{article}
\usepackage[]{}
...
\usepackage[]{}
\begin{document}
...
\input{parts/chapter1}
...
\includegraphics{graphics/figure1.eps}
...
\end{document}

All these projects include own relative paths to other resources, e.g. graphics and chapters.

My goal is to build a new file that will contain all three including everything between \begin{document} and \end{document}, such that I can work on my three small projects and easily compile them into my PhD Thesis.

I could get it working with package catchfilebetweentags, but with full paths only. I also found another package import that helps to recognize relative paths. But I do not know how to combine these two packages. Can one help?

A simple example:

main.tex

\documentclass[12pt,a4paper]{article}
\usepackage{import}
\begin{document}
1.Hello World
\subimport{test/}{inputFile.tex}
\end{document}

test/inputFile.tex

\documentclass[12pt,a4paper]{article}
\begin{document}
2.Hello World\\
\input{inputFile2.tex}
\end{document}

test/inputFile2.tex

3.Hello World

It would work if I commented \documentclass[12pt,a4paper]{article}, \begin{document}, \end{document} in inputFile.tex. But then I cannot compile inputFile.tex independently.

Best Answer

I got it working with import package and linux terminal command sed that creates inputFileDis.tex with the text between \begin{document} and \end{document} from inputFile.tex:

sed -n -e '0,/^\\begin{document}$/d' -e '/^\\end{document}/,$d' -e p test/inputFile.tex > test/inputFileDis.tex

which I need to run every time before I compile main.tex.

Then main.tex

\documentclass[12pt,a4paper]{article}
\usepackage{import}
\begin{document}
1.Hello World
\subimport{test/}{inputFileDis.tex}
\end{document}

test/inputFile.tex

\documentclass[12pt,a4paper]{article}
\begin{document}
2.Hello World\\
\input{inputFile2.tex}
\end{document}

test/inputFileDis.tex

2.Hello World\\
\input{inputFile2.tex}

test/inputFile2.tex

3.Hello World

Does anyone have better solution in mind?

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