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- #!/usr/bin/env python
- from __future__ import print_function, absolute_import
- import operator
- import os.path
- import sys
- import xml.etree.ElementTree as ET
- BUILD_SOURCE_FILE = os.path.join("src", "lxml", "xmlerror.pxi")
- BUILD_DEF_FILE = os.path.join("src", "lxml", "includes", "xmlerror.pxd")
- # map enum name to Python variable name and alignment for constant name
- ENUM_MAP = {
- 'xmlErrorLevel' : ('__ERROR_LEVELS', 'XML_ERR_'),
- 'xmlErrorDomain' : ('__ERROR_DOMAINS', 'XML_FROM_'),
- 'xmlParserErrors' : ('__PARSER_ERROR_TYPES', 'XML_'),
- # 'xmlXPathError' : ('__XPATH_ERROR_TYPES', ''),
- # 'xmlSchemaValidError' : ('__XMLSCHEMA_ERROR_TYPES', 'XML_'),
- 'xmlRelaxNGValidErr' : ('__RELAXNG_ERROR_TYPES', 'XML_'),
- }
- ENUM_ORDER = (
- 'xmlErrorLevel',
- 'xmlErrorDomain',
- 'xmlParserErrors',
- # 'xmlXPathError',
- # 'xmlSchemaValidError',
- 'xmlRelaxNGValidErr')
- COMMENT = """
- # This section is generated by the script '%s'.
- """ % os.path.basename(sys.argv[0])
- def split(lines):
- lines = iter(lines)
- pre = []
- for line in lines:
- pre.append(line)
- if line.startswith('#') and "BEGIN: GENERATED CONSTANTS" in line:
- break
- pre.append('')
- old = []
- for line in lines:
- if line.startswith('#') and "END: GENERATED CONSTANTS" in line:
- break
- old.append(line.rstrip('\n'))
- post = ['', line]
- post.extend(lines)
- post.append('')
- return pre, old, post
- def regenerate_file(filename, result):
- new = COMMENT + '\n'.join(result)
- # read .pxi source file
- with open(filename, 'r', encoding="utf-8") as f:
- pre, old, post = split(f)
- if new.strip() == '\n'.join(old).strip():
- # no changes
- return False
- # write .pxi source file
- with open(filename, 'w', encoding="utf-8") as f:
- f.write(''.join(pre))
- f.write(new)
- f.write(''.join(post))
- return True
- def parse_enums(doc_dir, api_filename, enum_dict):
- tree = ET.parse(os.path.join(doc_dir, api_filename))
- for enum in tree.iterfind('symbols/enum'):
- enum_type = enum.get('type')
- if enum_type not in ENUM_MAP:
- continue
- entries = enum_dict.get(enum_type)
- if not entries:
- print("Found enum", enum_type)
- entries = enum_dict[enum_type] = []
- entries.append((
- enum.get('name'),
- int(enum.get('value')),
- enum.get('info', '').strip(),
- ))
- def main(doc_dir):
- enum_dict = {}
- parse_enums(doc_dir, 'libxml2-api.xml', enum_dict)
- #parse_enums(doc_dir, 'libxml-xmlerror.html', enum_dict)
- #parse_enums(doc_dir, 'libxml-xpath.html', enum_dict)
- #parse_enums(doc_dir, 'libxml-xmlschemas.html', enum_dict)
- #parse_enums(doc_dir, 'libxml-relaxng.html', enum_dict)
- # regenerate source files
- pxi_result = []
- append_pxi = pxi_result.append
- pxd_result = []
- append_pxd = pxd_result.append
- append_pxd('cdef extern from "libxml/xmlerror.h":')
- ctypedef_indent = ' '*4
- constant_indent = ctypedef_indent*2
- for enum_name in ENUM_ORDER:
- constants = enum_dict[enum_name]
- constants.sort(key=operator.itemgetter(1))
- pxi_name, prefix = ENUM_MAP[enum_name]
- append_pxd(ctypedef_indent + 'ctypedef enum %s:' % enum_name)
- append_pxi('cdef object %s = """\\' % pxi_name)
- prefix_len = len(prefix)
- length = 2 # each string ends with '\n\0'
- for name, val, descr in constants:
- if descr and descr != str(val):
- line = '%-50s = %7d # %s' % (name, val, descr)
- else:
- line = '%-50s = %7d' % (name, val)
- append_pxd(constant_indent + line)
- if name[:prefix_len] == prefix and len(name) > prefix_len:
- name = name[prefix_len:]
- line = '%s=%d' % (name, val)
- append_pxi(line)
- length += len(line) + 2 # + '\n\0'
- append_pxd('')
- append_pxi('"""')
- append_pxi('')
- # write source files
- print("Updating file %s" % BUILD_SOURCE_FILE)
- updated = regenerate_file(BUILD_SOURCE_FILE, pxi_result)
- if not updated:
- print("No changes.")
- print("Updating file %s" % BUILD_DEF_FILE)
- updated = regenerate_file(BUILD_DEF_FILE, pxd_result)
- if not updated:
- print("No changes.")
- print("Done")
- if __name__ == "__main__":
- if len(sys.argv) < 2 or sys.argv[1].lower() in ('-h', '--help'):
- print("This script generates the constants in file %s" % BUILD_SOURCE_FILE)
- print("Call as")
- print(sys.argv[0], "/path/to/libxml2-doc-dir")
- sys.exit(len(sys.argv) > 1)
- main(sys.argv[1])
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