mirror of
https://github.com/LonamiWebs/Telethon.git
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66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
class SourceBuilder:
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"""This class should be used to build .py source files"""
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def __init__(self, out_stream, indent_size=4):
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self.current_indent = 0
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self.on_new_line = False
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self.indent_size = indent_size
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self.out_stream = out_stream
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# Was a new line added automatically before? If so, avoid it
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self.auto_added_line = False
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def indent(self):
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"""Indents the current source code line
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by the current indentation level
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"""
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self.write(' ' * (self.current_indent * self.indent_size))
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def write(self, string, *args, **kwargs):
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"""Writes a string into the source code,
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applying indentation if required
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"""
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if self.on_new_line:
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self.on_new_line = False # We're not on a new line anymore
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# If the string was not empty, indent; Else probably a new line
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if string.strip():
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self.indent()
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if args or kwargs:
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self.out_stream.write(string.format(*args, **kwargs))
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else:
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self.out_stream.write(string)
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def writeln(self, string='', *args, **kwargs):
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"""Writes a string into the source code _and_ appends a new line,
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applying indentation if required
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"""
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self.write(string + '\n', *args, **kwargs)
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self.on_new_line = True
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# If we're writing a block, increment indent for the next time
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if string and string[-1] == ':':
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self.current_indent += 1
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# Clear state after the user adds a new line
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self.auto_added_line = False
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def end_block(self):
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"""Ends an indentation block, leaving an empty line afterwards"""
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self.current_indent -= 1
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# If we did not add a new line automatically yet, now it's the time!
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if not self.auto_added_line:
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self.writeln()
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self.auto_added_line = True
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def __str__(self):
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self.out_stream.seek(0)
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return self.out_stream.read()
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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self.out_stream.close()
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