# Copyright 2017 The Meson development team # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # http://www.apache.org/licenses/LICENSE-2.0 # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """Code that creates simple startup projects.""" from pathlib import Path import re, shutil, subprocess from glob import glob from mesonbuild import mesonlib from mesonbuild.environment import detect_ninja from mesonbuild.templates.ctemplates import (create_exe_c_sample, create_lib_c_sample) from mesonbuild.templates.cpptemplates import (create_exe_cpp_sample, create_lib_cpp_sample) from mesonbuild.templates.objctemplates import (create_exe_objc_sample, create_lib_objc_sample) from mesonbuild.templates.dlangtemplates import (create_exe_d_sample, create_lib_d_sample) from mesonbuild.templates.fortrantemplates import (create_exe_fortran_sample, create_lib_fortran_sample) from mesonbuild.templates.rusttemplates import (create_exe_rust_sample, create_lib_rust_sample) FORTRAN_SUFFIXES = ['.f', '.for', '.F', '.f90', '.F90'] info_message = '''Sample project created. To build it run the following commands: meson builddir ninja -C builddir ''' def create_sample(options): if options.language == 'c': if options.type == 'executable': create_exe_c_sample(options.name, options.version) elif options.type == 'library': create_lib_c_sample(options.name, options.version) else: raise RuntimeError('Unreachable code') elif options.language == 'cpp': if options.type == 'executable': create_exe_cpp_sample(options.name, options.version) elif options.type == 'library': create_lib_cpp_sample(options.name, options.version) else: raise RuntimeError('Unreachable code') elif options.language == 'd': if options.type == 'executable': create_exe_d_sample(options.name, options.version) elif options.type == 'library': create_lib_d_sample(options.name, options.version) else: raise RuntimeError('Unreachable code') elif options.language == 'fortran': if options.type == 'executable': create_exe_fortran_sample(options.name, options.version) elif options.type == 'library': create_lib_fortran_sample(options.name, options.version) else: raise RuntimeError('Unreachable code') elif options.language == 'rust': if options.type == 'executable': create_exe_rust_sample(options.name, options.version) elif options.type == 'library': create_lib_rust_sample(options.name, options.version) else: raise RuntimeError('Unreachable code') elif options.language == 'objc': if options.type == 'executable': create_exe_objc_sample(options.name, options.version) elif options.type == 'library': create_lib_objc_sample(options.name, options.version) else: raise RuntimeError('Unreachable code') else: raise RuntimeError('Unreachable code') print(info_message) def autodetect_options(options, sample=False): if not options.name: options.name = Path().resolve().stem if not re.match('[a-zA-Z_][a-zA-Z0-9]*', options.name) and sample: raise SystemExit('Name of current directory "{}" is not usable as a sample project name.\n' 'Specify a project name with --name.'.format(options.name)) print('Using "{}" (name of current directory) as project name.' .format(options.name)) if not options.executable: options.executable = options.name print('Using "{}" (project name) as name of executable to build.' .format(options.executable)) if sample: # The rest of the autodetection is not applicable to generating sample projects. return if not options.srcfiles: srcfiles = [] for f in (f for f in Path().iterdir() if f.is_file()): if f.suffix in (['.cc', '.cpp', '.c', '.d', '.m', '.rs'] + FORTRAN_SUFFIXES): srcfiles.append(f) if not srcfiles: raise SystemExit('No recognizable source files found.\n' 'Run meson init in an empty directory to create a sample project.') options.srcfiles = srcfiles print("Detected source files: " + ' '.join(map(str, srcfiles))) options.srcfiles = [Path(f) for f in options.srcfiles] if not options.language: for f in options.srcfiles: if f.suffix in ('.cc', '.cpp'): options.language = 'cpp' break if f.suffix == '.c': options.language = 'c' break if f.suffix == '.d': options.language = 'd' break if f.suffix in FORTRAN_SUFFIXES: options.language = 'fortran' break if f.suffix == '.rs': options.language = 'rust' break if f.suffix == '.m': options.language = 'objc' break if not options.language: raise SystemExit("Can't autodetect language, please specify it with -l.") print("Detected language: " + options.language) meson_executable_template = '''project('{project_name}', '{language}', version : '{version}', default_options : [{default_options}]) executable('{executable}', {sourcespec},{depspec} install : true) ''' def create_meson_build(options): if options.type != 'executable': raise SystemExit('\nGenerating a meson.build file from existing sources is\n' 'supported only for project type "executable".\n' 'Run meson init in an empty directory to create a sample project.') default_options = ['warning_level=3'] if options.language == 'cpp': # This shows how to set this very common option. default_options += ['cpp_std=c++14'] # If we get a meson.build autoformatter one day, this code could # be simplified quite a bit. formatted_default_options = ', '.join("'{}'".format(x) for x in default_options) sourcespec = ',\n '.join("'{}'".format(x) for x in options.srcfiles) depspec = '' if options.deps: depspec = '\n dependencies : [\n ' depspec += ',\n '.join("dependency('{}')".format(x) for x in options.deps.split(',')) depspec += '],' content = meson_executable_template.format(project_name=options.name, language=options.language, version=options.version, executable=options.executable, sourcespec=sourcespec, depspec=depspec, default_options=formatted_default_options) open('meson.build', 'w').write(content) print('Generated meson.build file:\n\n' + content) def add_arguments(parser): parser.add_argument("srcfiles", metavar="sourcefile", nargs="*", help="source files. default: all recognized files in current directory") parser.add_argument("-n", "--name", help="project name. default: name of current directory") parser.add_argument("-e", "--executable", help="executable name. default: project name") parser.add_argument("-d", "--deps", help="dependencies, comma-separated") parser.add_argument("-l", "--language", choices=['c', 'cpp', 'd', 'fortran', 'rust', 'objc'], help="project language. default: autodetected based on source files") parser.add_argument("-b", "--build", help="build after generation", action='store_true') parser.add_argument("--builddir", help="directory for build", default='build') parser.add_argument("-f", "--force", action="store_true", help="force overwrite of existing files and directories.") parser.add_argument('--type', default='executable', choices=['executable', 'library']) parser.add_argument('--version', default='0.1') def run(options) -> int: if not glob('*'): autodetect_options(options, sample=True) if not options.language: print('Defaulting to generating a C language project.') options.language = 'c' create_sample(options) else: autodetect_options(options) if Path('meson.build').is_file() and not options.force: raise SystemExit('meson.build already exists. Use --force to overwrite.') create_meson_build(options) if options.build: if Path(options.builddir).is_dir() and options.force: print('Build directory already exists, deleting it.') shutil.rmtree(options.builddir) print('Building...') cmd = mesonlib.meson_command + [options.builddir] ret = subprocess.run(cmd) if ret.returncode: raise SystemExit cmd = [detect_ninja(), '-C', options.builddir] ret = subprocess.run(cmd) if ret.returncode: raise SystemExit return 0