C++11 program for renumbering latex references
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C++11 program for renumbering latex references

Building without a build system

Compile with

g++ -std=c++11 -O3 cpptexnumber.cpp -o cpptexnumber

Use the -DDO_NOT_IGNORE_COMMENTS flag if you do not want to ignore the comments in the latex source file (ignored by default). A CMakeLists.txt is provided for automatic building via cmake and g++/clang++. The compiler must be C++11 compliant and must fully support the std::regex Regular Expression part of the C++ Standard Library. I recommend g++ version 4.9 or later, or clang++ version 3.5 or later.

Building with cmake:

I recommend an out-of-source build, i.e., from the root of the project type

mkdir ./build
cd ./build
cmake ..

Use cmake -DDO_NOT_IGNORE_COMMENTS=ON .. if you do not want to ignore the comments in the latex source file (ignored by default).

The above commands build the relase version (default) executable cpptexnumber, from the source file ./cpptexnumber.cpp.


cpptexnumber in.tex out.tex pattern replacement 


Replaces all labels in in.tex that match a given input pattern, such as \label{pattern*} and all corresponding references (\ref, \eqref, \pageref) with renumbered ones replacement+idx, where idx counts the matching \label{pattern*} order of appearance, i.e. equals 1 for the first \label that matches the input pattern, 2 for the second etc. The in.tex is left unchanged and the modifications are written to out.tex.


Consider a latex file source.tex having three labels, named, in order of appearance, \label{eqn5}, \label{eqn_important} and lastly \label{entropy}. Then the command

cpptexnumber in.tex out.tex eqn Eqn 

will replace \label{eqn5} by \label{Eqn1} (and also all references to eqn5 will automatically become references to Eqn1) and replace \label{eqn_important} by \label{Eqn2} (again together with the corresponding references). The \label{entropy} remains unchanged since it does not match the input pattern \label{eqn*}. The changes are saved to the file out.tex.