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List: git
Subject: Re: [PATCH v3 2/8] cmake: generate the shell/perl/python scripts and templates, translations
From: Sibi Siddharthan <sibisiddharthan.github () gmail ! com>
Date: 2020-05-30 18:57:10
Message-ID: CAKiG+9Ue1fqrzqHduZY4Pnsh4q+Thqq618JymkonmVhGewmM1g () mail ! gmail ! com
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On Sat, May 30, 2020 at 12:58 AM Junio C Hamano <gitster@pobox.com> wrote:
>
> "Sibi Siddharthan via GitGitGadget" <gitgitgadget@gmail.com> writes:
>
> > From: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
> >
> > Implement the placeholder substitution to generate scripted
> > Porcelain commands, e.g. git-request-pull out of
> > git-request-pull.sh
> >
> > Generate shell/perl/python scripts and template using CMake instead of
> > using sed like the build procedure in the Makefile does.
> >
> > The text translations are only build if `msgfmt` is found in your path.
> >
> > NOTE: The scripts and templates are generated during configuration.
>
> OK.
>
> > Changes
> > The CMake script parses the Makefile for:
> > SCRIPT_SH
> > SCRIPT_PERL
>
> Below the three-dash line.
>
> > +#shell scripts
> > +parse_makefile_for_scripts(git_sh_scripts "SCRIPT_SH" ".sh")
>
> OK.
>
> > +set(git_shell_scripts
> > + ${git_sh_scripts}
> > + git-mergetool--lib git-parse-remote git-rebase--preserve-merges
> > + git-sh-setup git-sh-i18n git-instaweb)
>
> Do we need to have enumeration here, which can drift out of sync
> with the reality? Wouldn't we want to avoid it with something like
>
> parse_makefile_for_scripts(git_sh_lib "SCRIPT_LIB" "")
>
> too?
>
Will do.
> > +#perl modules
> > +file(GLOB_RECURSE perl_modules "${CMAKE_SOURCE_DIR}/perl/*.pm")
> > +
> > +foreach(pm ${perl_modules})
> > + string(REPLACE "${CMAKE_SOURCE_DIR}/perl/" "" file_path ${pm})
> > + file(STRINGS ${pm} content NEWLINE_CONSUME)
> > + string(REPLACE "@@LOCALEDIR@@" "${LOCALEDIR}" content "${content}")
> > + string(REPLACE "@@NO_PERL_CPAN_FALLBACKS@@" "" content "${content}")
> > + file(WRITE ${CMAKE_BINARY_DIR}/perl/build/lib/${file_path} ${content})
> > +#test-lib.sh requires perl/build/lib to be the build directory of perl modules
> > +endforeach()
> > +
> > +
> > +#templates
> > +file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/templates/blt/branches) #create branches
> > +set(hooks_templates
> > + applypatch-msg.sample pre-applypatch.sample pre-push.sample
> > + commit-msg.sample pre-commit.sample pre-rebase.sample
> > + fsmonitor-watchman.sample pre-merge-commit.sample pre-receive.sample
> > + post-update.sample prepare-commit-msg.sample update.sample)
>
> Do we need to have enumeration here, which can drift out of sync
> with the reality? Wouldn't we want to avoid it with file(GLOB) or
> something?
>
Will glob the above, and the po files as well.
> > +#templates have @.*@ replacement so use configure_file instead
> > +#hooks
> > +foreach(tm ${hooks_templates})
> > + configure_file(${CMAKE_SOURCE_DIR}/templates/hooks--${tm} \
> > ${CMAKE_BINARY_DIR}/templates/blt/hooks/${tm} @ONLY) +endforeach()
> > +
> > +#info
> > +configure_file(${CMAKE_SOURCE_DIR}/templates/info--exclude \
> > ${CMAKE_BINARY_DIR}/templates/blt/info/exclude @ONLY) +
> > +#this
> > +configure_file(${CMAKE_SOURCE_DIR}/templates/this--description \
> > ${CMAKE_BINARY_DIR}/templates/blt/description @ONLY)
>
> I was hoping that we could drive any build system without having to
> have separate rules like the above. The idea behind all files with
> funny double-dash in its name under templates/ directory is:
>
So, I have to write the logic for determining the directories?
If so will do.
> - double-dash denotes directory boundary
>
> - when a template input ends with double-dash, it tells us to
> create a directory
>
> - leading "this--" denotes "not in a subdirectory but at the top
> level of the generated template directory"
>
> so that each of them knows what the name of the file and directory
> hierarchy of the final destination is, and the result of transforming
> can be created and deposited at the final place mechanically with a
> single rule.
>
> > +#translations
> > +if(MSGFMT_EXE)
> > + set(po_files bg ca de el es fr is it ko pt_PT ru sv tr vi \
> > zh_CN zh_TW)
>
> Do we need to have enumeration here, which can drift out of sync
> with the reality? Wouldn't globbing for *.po be sufficient?
>
> > + foreach(po ${po_files})
> > + file(MAKE_DIRECTORY \
> > ${CMAKE_BINARY_DIR}/po/build/locale/${po}/LC_MESSAGES) + \
> > add_custom_command(OUTPUT \
> > ${CMAKE_BINARY_DIR}/po/build/locale/${po}/LC_MESSAGES/git.mo + \
> > COMMAND ${MSGFMT_EXE} --check --statistics -o \
> > ${CMAKE_BINARY_DIR}/po/build/locale/${po}/LC_MESSAGES/git.mo \
> > ${CMAKE_SOURCE_DIR}/po/${po}.po) + list(APPEND po_gen \
> > ${CMAKE_BINARY_DIR}/po/build/locale/${po}/LC_MESSAGES/git.mo) + endforeach()
> > + add_custom_target(po-gen ALL DEPENDS ${po_gen})
> > +endif()
>
> Thanks.
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