krd/angie-conv-image
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rewrite jinja.py

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This commit is contained in:
Konstantin Demin 2024-07-15 21:51:40 +03:00
parent e6328b5cea
commit e3338a1f18
Signed by: krd
GPG Key ID: 4D56F87A8BA65FD0
1 changed files with 49 additions and 28 deletions
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77
scripts/jinja.py
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@ -8,24 +8,42 @@ import sys
import jinja2
import yaml
NGX_JINJA_MODULES = sorted(set(os.getenv('NGX_JINJA_MODULES', 'os os.path sys netaddr psutil re wcmatch').split(sep=' ')))
ME = sys.argv[0]
NGX_JINJA_SUFFIX = os.getenv('NGX_JINJA_SUFFIX', '.j2')
if NGX_JINJA_SUFFIX == '':
raise ValueError('NGX_JINJA_SUFFIX is empty')
if not NGX_JINJA_SUFFIX.startswith('.'):
raise ValueError('NGX_JINJA_SUFFIX does not start with dot (".")')
NGX_JINJA_CONFIG = os.getenv('NGX_JINJA_CONFIG', '')
if (NGX_JINJA_CONFIG != '') and (not os.path.exists(NGX_JINJA_CONFIG)):
print(f'{ME}: config does not exist, skipping: {NGX_JINJA_CONFIG}', file=sys.stderr)
NGX_JINJA_CONFIG_NAMES = [
J2_MODULES_DEFAULT = 'os os.path sys netaddr psutil re wcmatch'
J2_SUFFIX_DEFAULT = '.j2'
J2_CFG_PATHS = [
'/angie/jinja',
'/etc/angie/jinja',
]
J2_CFG_EXTS = [
'yml',
'yaml',
'json',
]
J2_SEARCH_PATH = [
'.',
'/etc/angie',
]
J2_EXT_LIST = [
'jinja2.ext.do',
'jinja2.ext.loopcontrols',
]
J2_MODULES = sorted(set(os.getenv('NGX_JINJA_MODULES', J2_MODULES_DEFAULT).split(sep=' ')))
ME = sys.argv[0]
J2_SUFFIX = os.getenv('NGX_JINJA_SUFFIX', J2_SUFFIX_DEFAULT)
if J2_SUFFIX == '':
raise ValueError('NGX_JINJA_SUFFIX is empty')
if not J2_SUFFIX.startswith('.'):
raise ValueError('NGX_JINJA_SUFFIX does not start with dot (".")')
J2_CONFIG = os.getenv('NGX_JINJA_CONFIG', '')
if (J2_CONFIG != '') and (not os.path.exists(J2_CONFIG)):
print(f'{ME}: config does not exist, skipping: {J2_CONFIG}', file=sys.stderr)
if len(sys.argv) < 2:
raise ValueError('not enough arguments (needed: 2)')
@ -44,14 +62,14 @@ if len(sys.argv) == 3:
output_file = sys.argv[2]
else:
output_file, ext = os.path.splitext(input_file)
if ext != NGX_JINJA_SUFFIX:
raise ValueError(f'input file name extension mismatch (not a "{NGX_JINJA_SUFFIX}")')
if ext != J2_SUFFIX:
raise ValueError(f'input file name extension mismatch (not a "{J2_SUFFIX}")')
if input_file == output_file:
raise ValueError('unable to process template inplace')
kwargs = {}
for m in NGX_JINJA_MODULES:
for m in J2_MODULES:
kwargs[m] = importlib.import_module(m)
kwargs['env'] = os.environ
kwargs['cfg'] = {}
@ -83,16 +101,19 @@ def merge_dict_from_file(filename):
return False
for base_name in NGX_JINJA_CONFIG_NAMES:
for file_name in [ base_name + '.' + ext for ext in [ 'yml', 'yaml', 'json' ] ]:
if merge_dict_from_file(file_name):
break
continue
merge_dict_from_file(NGX_JINJA_CONFIG)
if (J2_CONFIG != '') and (os.path.isfile(J2_CONFIG)):
merge_dict_from_file(J2_CONFIG)
else:
for base in J2_CFG_PATHS:
for full in [ base + '.' + ext for ext in J2_CFG_EXTS ]:
if merge_dict_from_file(full):
break
continue
with open(input_file, mode='r', encoding='utf-8') as fin:
template = jinja2.Template(fin.read())
rendered = template.render(**kwargs)
with open(output_file, mode='w', encoding='utf-8') as fout:
fout.write(rendered)
j2_loader = jinja2.FileSystemLoader(J2_SEARCH_PATH, followlinks=True)
j2_environ = jinja2.Environment(loader=j2_loader, extensions=J2_EXT_LIST)
j2_template = j2_environ.get_template(input_file)
j2_stream = j2_template.stream(**kwargs)
j2_stream.disable_buffering()
j2_stream.dump(output_file, encoding='utf-8')