|
|
| (293 intermediate revisions by one other user not shown) |
| Line 1: |
Line 1: |
| {{Construction}} | | {{Moved To Community}} |
| | |
| == Purpose of this document ==
| |
| | |
| This document describes the recommended coding style for kdepim. Nobody is
| |
| forced to use this style, but to have consistent formatting of the source code
| |
| files it is strongly recommended to make use of it.
| |
| | |
| ''In short: Kdepim coding style follows the''
| |
| [http://techbase.kde.org/Policies/Kdelibs_Coding_Style Kdelibs coding style].
| |
| | |
| == The rules for Kdepim ==
| |
| | |
| *don't use any <TAB>s
| |
| *Trim the lines
| |
| *Only single empty lines should be used
| |
| *The first line, the last line(s) may not be empty
| |
| *no "one line" if-statement
| |
| | |
| == Migration ==
| |
| | |
| As discussed at the KDEPIM meeting, Berlin, 3 March 2013, all the files of KDEPIM will
| |
| be reviewed to follow the coding style. This will be done over a long time,
| |
| directory after directory, for each of the
| |
| rules defined above. For each rule, one can find one or two script(s).
| |
| | |
| == Check the objects ==
| |
| | |
| As a first approach, not any object may have binary change after applying one of the rules.
| |
| To check this, one uses the '''Check-the-Objects.sh'''. Download the script: [[Media:Check-the-Objects.sh.gz]] | |
| | |
| The script can be used with one of the commands:
| |
| * save
| |
| * test
| |
| * clean
| |
| | |
| '''An example:'''
| |
| | |
| {{Input|1=cd <some_kdepim_directory>
| |
| mkdir build
| |
| cd build
| |
| ccmake ../
| |
| make}}
| |
| {{Output|1=<span style="color:Fuchsia">Scanning dependencies of target gpgmepp</span>
| |
| [ 0%] <span style="color:green">Building CXX object gpgme++/CMakeFiles/gpgmepp.dir/gpgmepp_automoc.cpp.o</span>
| |
| [ 0%] <span style="color:green">Building CXX object gpgme++/CMakeFiles/gpgmepp.dir/exception.cpp.o</span>
| |
| [ 0%] <span style="color:green">Building CXX object gpgme++/CMakeFiles/gpgmepp.dir/context.cpp.o</span>
| |
| ...}}
| |
| | |
| {{Input|1=Check-the-Objects.sh save}}
| |
| The script makes a copy of all the objects and a "time stamp":
| |
| {{Output|1=save the object ./kholidays/tests/CMakeFiles/testzodiac.dir/testzodiac.cpp.o
| |
| save the object ./kholidays/tests/CMakeFiles/testzodiac.dir/testzodiac_automoc.cpp.o
| |
| ...
| |
| all objects are saved}}
| |
| | |
| Now, one makes somes change(s) on the source(s) and:
| |
| | |
| {{Input| 1=make}}
| |
| | |
| Depending on the Makefile, some objects will be compiled again:
| |
| | |
| {{Output| 1=<span style="color:Fuchsia">Scanning dependencies of target akonadi-kde</span>
| |
| [ 17%] <span style="color:green">Building CXX object akonadi/CMakeFiles/akonadi-kde.dir/entitytreeview.cpp.o</span>
| |
| [ 17%] <span style="color:green">Building CXX object akonadi/CMakeFiles/akonadi-kde.dir/itemfetchjob.cpp.o</span>
| |
| [ 17%] <span style="color:green">Building CXX object akonadi/CMakeFiles/akonadi-kde.dir/statisticsproxymodel.cpp.o</span>
| |
| ...
| |
| <span style="color:Fuchsia">Scanning dependencies of target akonadi-kmime</span>
| |
| [ 56%] <span style="color:green">Building CXX object akonadi/kmime/CMakeFiles/akonadi-kmime.dir/standardmailactionmanager.cpp.o</span>}}
| |
| | |
| {{Input|1=Check-the-Objects.sh test}}
| |
| | |
| The script finds all the new objects, makes a comparision with the saved version:
| |
| {{Output|1=test the object ./akonadi/CMakeFiles/akonadi-kde.dir/statisticsproxymodel.cpp.o
| |
| test the object ./akonadi/CMakeFiles/akonadi-kde.dir/entitytreeview.cpp.o
| |
| test the object ./akonadi/CMakeFiles/akonadi-kde.dir/itemfetchjob.cpp.o
| |
| test the object ./akonadi/kmime/CMakeFiles/akonadi-kmime.dir/standardmailactionmanager.cpp.o
| |
| all tests are OK
| |
| }}
| |
| | |
| == Check the assembler files ==
| |
| If we add or remove some lines, the debug informations included in the object file will be change also.
| |
| | |
| This is the case with the test/change of "''Only single empty lines should be used''", "''First line, last line(s) may not be empty''" and some more test/change below (''adding some blocks'' with { and }).
| |
| | |
| For this reason it is no more possible to compare the objects.
| |
| We have to compare the assembler files.
| |
| This works pretty well for the version with '''CMAKE_BUILD_TYPE''' set to ''release''.
| |
| For the version with '''CMAKE_BUILD_TYPE''' set to ''debug'', we must remove all the debug informations before the comparision could take place.
| |
| | |
| === Generate the assembler files ===
| |
| | |
| To generate the assembler files, we only need to modify the ''build.make'' in every folder.
| |
| | |
| The script '''Prepare-build_make_files.sh''' works on the all directory, finds the line with the compiler command,
| |
| duplicates the line, add a ''-S option'' and changes the name of the output to ''somename.s''.
| |
| After a new ''make'' command, we can save all the assembler files with the script '''Check-the-assembler_code.sh'''.
| |
| Download the script: [[Media:Prepare-build_make_files.sh.gz]]
| |
| | |
| === Remove the debug informations ===
| |
| | |
| The biggest part of the debug informations beginns with the directive line
| |
| *.Ldebug_info0
| |
| We drop all the next lines.
| |
| | |
| We drop also the lines with the directive .loc
| |
| They contain an information about the source line (here 123) we need later to drop the lines
| |
| * movl $123, %edx
| |
| * movl $123, %ecx
| |
| | |
| The lines with
| |
| * .string "/home/guy-kde/projects/kdepimlibs/akonadi/agentbase.cpp:454"
| |
| will be also removed.
| |
| | |
| The script to check the assembler files can be used in the same way as the one above (Check-the-Objects.sh).
| |
| To check this, one uses the '''Check-the-assembler_code.sh'''. Download the script: [[Media:Check-the-assembler_code.sh.gz]]
| |
| | |
| The script can be used with one of the commands:
| |
| * save
| |
| * test
| |
| * clean
| |
| | |
| == The scripts ==
| |
| The first script is '''to check''' a single file or a complete directory for all .h and
| |
| .cpp files.
| |
| | |
| If present, the second script '''makes the changes''' for a single file or a complete
| |
| directory for all .h and .cpp files. For some complicated situations, the
| |
| script makes no change.
| |
| | |
| One can use the scripts for own work.It is recommanded to use them in this order.
| |
| | |
| ==== don't use any <TAB>s ====
| |
| *coding-style-check-Tabs.sh
| |
| *coding-style-change-Tabs.sh
| |
| | |
| Download the scripts: [[Media:Tabs.tar.gz]]
| |
| | |
| The output of the '''check''' script is:
| |
| {{Output|1=check the file /home/guy-kde/projects/kdepimlibs/ktnef/ktnefparser.cpp
| |
| 1->308: Tab at 16: stream_ >> i; // i <- attribute type & name
| |
| 2->311: Tab at 16: stream_ >> i; // i <- data length
| |
| 3->326: Tab at 22: case attATTACHMENT: // try to get attachment info
| |
| 4->367: Tab at 16: stream_ >> u; // u <- checksum
| |
| a b c d}}
| |
|
| |
| This shows:
| |
| * the name of the file which is under test.
| |
| * the number of occurence('''a'''), the line number('''b'''), the position found('''c''') and the line itself('''d''').
| |
| | |
| The '''change''' script:
| |
| *makes a substitution of any <TAB> with eight spaces,
| |
| *The change works for the complete source, even within comments and strings,
| |
| *That might be too much and changes the vertical alignment of the code.
| |
| | |
| ==== Trim the lines ====
| |
| | |
| *coding-style-check-Trim.sh
| |
| *coding-style-change-Trim.sh
| |
| | |
| Download the scripts: [[Media:Trim.tar.gz]]
| |
| | |
| The output of the '''check''' script is:
| |
| {{Output|1=check the file /home/guy-kde/Software/coding-style-check/trim.cpp
| |
| 1->51: Space(s) at end of line (28): QVariant m_matchData;}}
| |
|
| |
| This shows:
| |
| * the name of the file which is under test.
| |
| * the number of occurence, the line number, the position found and the line itself.
| |
| | |
| | |
| The '''change''' script:
| |
| *remove all trailing space(s).
| |
| | |
| ==== Only single empty lines should be used ====
| |
| | |
| *coding-style-check-Twice.sh
| |
| *coding-style-change-Twice.sh
| |
| | |
| The output of the '''check''' script is:
| |
| {{Output|1=check the file /home/guy-kde/projects/kdepimlibs/syndication/rss2/enclosure.cpp
| |
| 1->25: next empty line found
| |
| 2->26: next empty line found
| |
| 3->30: next empty line found}}
| |
|
| |
| This shows:
| |
| * the name of the file which is under test.
| |
| * the number of occurrences and the line numbers.
| |
| | |
| The '''change''' script:
| |
| *removes all the next empty line(s).
| |
| | |
| ==== First line, last line(s) may not be empty ====
| |
| | |
| Some of the sources have a first empty lines, some have one or more empty last line(s).
| |
| *coding-style-check-First-Last.sh
| |
| *coding-style-change-First-Last.sh
| |
| | |
| The output of the '''check''' script is:
| |
| {{Output|1=check the file /home/guy-kde/Software/coding-style-check/trim.cpp
| |
| The first line is empty
| |
| The last line is empty}}
| |
|
| |
| The '''change''' script:
| |
| *removes the first line if empty, all the last empty line(s).
| |
| | |
| ====no "one line" if-statement====
| |
| | |
| The following code:
| |
| {{Output|1=if ( a > b ) c = 123;}}
| |
| is correct, but we prefer:
| |
| {{Output|1=if ( a > b ) {
| |
| c = 123;
| |
| } }}
| |
