sonar.cxx.gcc.regex

To read sonar.cxx.gcc.reportPaths a default sonar.cxx.gcc.regex is already set, this can be customized if required. A regular expression can be defined to read the text. The regular expressions follow the Java convention.

Samples:

option	sonar.cxx.gcc.regex
with column number	(?<file>.*):(?<line>[0-9]+):[0-9]+:\x20warning:\x20(?<message>.*)\x20\[(?<id>.*)\]
without column number	(?<file>.*):(?<line>[0-9]+):\x20warning:\x20(?<message>.*)\x20\[(?<id>.*)\]
default	(?<file>[^:]*+):(?<line>\d{1,5}):\d{1,5}:\x20warning:\x20(?<message>.*?)(\x20\[(?<id>[^\[]*)\])?\s*$

Hint: You have to escape the backslash (\-> \\) for the regex parameter in the configuration file!

For the assignment of the individual parameters named-capturing groups are used. A capturing group (...) can also be assigned a "name", a named-capturing group e.g. (?<file>.*): The following named-capturing groups are defined:

named-capturing group	description
<file>	filename part of the issue
<line>	line number of the issue
<column>	column number of the issue
<id>	rule id of the issue
<message>	message text of the issue

Sample:

If the following regular expression is defined

sonar.cxx.gcc.regex=(?<file>.*):(?<line>[0-9]+):[0-9]+:\\x20warning:\\x20(?<message>.*)\\x20\\[(?<id>.*)\\]

and the sensor reads this text

src/zipmanager.cpp:141:10: warning: conversion to 'unsigned char' from 'unsigned int' may alter its value [-Wconversion]

then the text is split up as follows:

pattern	description	match
(?<file>.*):	filename part of the issue	src/zipmanager.cpp
(?<line>[0-9]+):	line number of the issue	141
[0-9]+:\x20warning:\x20	ignoring column and warning text
(?<message>.*)\x20	message text of the issue	conversion to 'unsigned char' from 'unsigned int' may alter its value
\[(?<id>.*)\]	rule id of the issue	-Wconversion