mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
3f6599c358
Introduce a new way of building: before any file is compiled all source files are combined into a single C file and all header files into a single H file (per subdir). This new approach makes it possible to quickly integrate JerryScript into other projects: ``` $ gcc -o demo demo.c jerryscript.c jerryscript-port-default.c -lm ``` To use the source generator run: ``` $ cmake -Bbuild_dir -H. -DENABLE_ALL_IN_ONE_SOURCE=ON $ make -C build_dir generate-single-source ``` This will create the following files in the `build_dir`: * jerryscript.c * jerryscript.h * jerryscript-config.h * jerryscript-port-default.c * jerryscript-port-default.h JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
242 lines
8.7 KiB
Python
242 lines
8.7 KiB
Python
#!/usr/bin/env python
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# Copyright JS Foundation and other contributors, http://js.foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import print_function
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import argparse
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import fnmatch
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import logging
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import os
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import re
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import sys
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class SourceMerger(object):
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# pylint: disable=too-many-instance-attributes
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_RE_INCLUDE = re.compile(r'\s*#include ("|<)(.*?)("|>)\n$')
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def __init__(self, h_files, extra_includes=None, remove_includes=None):
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self._log = logging.getLogger('sourcemerger')
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self._last_builtin = None
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self._processed = []
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self._output = []
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self._h_files = h_files
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self._extra_includes = extra_includes or []
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self._remove_includes = remove_includes
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# The copyright will be loaded from the first input file
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self._copyright = {'lines': [], 'loaded': False}
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def _process_non_include(self, line, file_level):
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# Special case #2: Builtin include header name usage
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if line.strip() == "#include BUILTIN_INC_HEADER_NAME":
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assert self._last_builtin is not None, 'No previous BUILTIN_INC_HEADER_NAME definition'
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self._log.debug('[%d] Detected usage of BUILTIN_INC_HEADER_NAME, including: %s',
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file_level, self._last_builtin)
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self.add_file(self._h_files[self._last_builtin])
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# return from the function as we have processed the included file
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return
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# Special case #1: Builtin include header name definition
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if line.startswith('#define BUILTIN_INC_HEADER_NAME '):
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# the line is in this format: #define BUILTIN_INC_HEADER_NAME "<filename>"
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self._last_builtin = line.split('"', 2)[1]
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self._log.debug('[%d] Detected definition of BUILTIN_INC_HEADER_NAME: %s',
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file_level, self._last_builtin)
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# the line is not anything special, just push it into the output
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self._output.append(line)
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def add_file(self, filename, file_level=0):
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if os.path.basename(filename) in self._processed:
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self._log.warning('Tried to to process an already processed file: "%s"', filename)
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return
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file_level += 1
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# mark the start of the new file in the output
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self._output.append('#line 1 "%s"\n' % (filename))
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line_idx = 0
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with open(filename, 'r') as input_file:
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in_copyright = False
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for line in input_file:
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line_idx += 1
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if not in_copyright and line.startswith('/* Copyright '):
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in_copyright = True
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if not self._copyright['loaded']:
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self._copyright['lines'].append(line)
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continue
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if in_copyright:
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if not self._copyright['loaded']:
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self._copyright['lines'].append(line)
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if line.strip().endswith('*/'):
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in_copyright = False
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self._copyright['loaded'] = True
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continue
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# check if the line is an '#include' line
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match = SourceMerger._RE_INCLUDE.match(line)
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if not match:
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# the line is not a header
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self._process_non_include(line, file_level)
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continue
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if match.group(1) == '<':
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# found a "global" include
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self._output.append(line)
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continue
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name = match.group(2)
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if name in self._remove_includes:
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self._log.debug('[%d] Removing include line (%s:%d): %s',
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file_level, filename, line_idx, line.strip())
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continue
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if name not in self._h_files:
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self._log.warning('[%d] Include not found: "%s" in "%s:%d"',
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file_level, name, filename, line_idx)
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self._output.append(line)
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continue
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if name in self._processed:
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self._log.debug('[%d] Already included: "%s"',
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file_level, name)
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continue
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self._log.debug('[%d] Including: "%s"',
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file_level, self._h_files[name])
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self.add_file(self._h_files[name])
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# mark the continuation of the current file in the output
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self._output.append('#line %d "%s"\n' % (line_idx + 1, filename))
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if not name.endswith('.inc.h'):
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# if the included file is not a "*.inc.h" file mark it as processed
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self._processed.append(name)
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file_level -= 1
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if not filename.endswith('.inc.h'):
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self._processed.append(os.path.basename(filename))
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def write_output(self, out_fp):
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for line in self._copyright['lines']:
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out_fp.write(line)
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for include in self._extra_includes:
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out_fp.write('#include "%s"\n' % include)
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for line in self._output:
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out_fp.write(line)
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def match_files(base_dir, pattern):
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"""
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Return the files matching the given pattern.
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:param base_dir: directory to search in
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:param pattern: file pattern to use
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:returns generator: the generator which iterates the matching file names
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"""
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for path, _, files in os.walk(base_dir):
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for name in files:
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if fnmatch.fnmatch(name, pattern):
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yield os.path.join(path, name)
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def collect_files(base_dir, pattern):
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"""
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Collect files in the provided base directory given a file pattern.
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Will collect all files in the base dir recursively.
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:param base_dir: directory to search in
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:param pattern: file pattern to use
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:returns dictionary: a dictionary file base name -> file path mapping
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"""
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name_mapping = {}
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for fname in match_files(base_dir, pattern):
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name = os.path.basename(fname)
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if name in name_mapping:
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print('Duplicate name detected: "%s" and "%s"' % (name, name_mapping[name]))
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continue
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name_mapping[name] = fname
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return name_mapping
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def run_merger(args):
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h_files = collect_files(args.base_dir, '*.h')
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c_files = collect_files(args.base_dir, '*.c')
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for name in args.remove_include:
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c_files.pop(name, '')
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h_files.pop(name, '')
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merger = SourceMerger(h_files, args.push_include, args.remove_include)
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if args.input_file:
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merger.add_file(args.input_file)
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if args.append_c_files:
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# if the input file is in the C files list it should be removed to avoid
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# double inclusion of the file
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if args.input_file:
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input_name = os.path.basename(args.input_file)
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c_files.pop(input_name, '')
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# Add the C files in reverse the order to make sure that builtins are
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# not at the beginning.
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for fname in sorted(c_files.values(), reverse=True):
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merger.add_file(fname)
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with open(args.output_file, 'w') as output:
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merger.write_output(output)
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def main():
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parser = argparse.ArgumentParser(description='Merge source/header files.')
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parser.add_argument('--base-dir', metavar='DIR', type=str, dest='base_dir',
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help='', default=os.path.curdir)
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parser.add_argument('--input', metavar='FILE', type=str, dest='input_file',
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help='Main input source/header file')
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parser.add_argument('--output', metavar='FILE', type=str, dest='output_file',
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help='Output source/header file')
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parser.add_argument('--append-c-files', dest='append_c_files', default=False,
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action='store_true', help='das')
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parser.add_argument('--remove-include', action='append', default=[])
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parser.add_argument('--push-include', action='append', default=[])
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parser.add_argument('--verbose', '-v', action='store_true', default=False)
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args = parser.parse_args()
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log_level = logging.WARNING
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if args.verbose:
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log_level = logging.DEBUG
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logging.basicConfig(level=log_level)
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logging.debug('Starting merge with args: %s', str(sys.argv))
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run_merger(args)
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if __name__ == "__main__":
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main()
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