69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
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class URLEncoder:
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@staticmethod
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def encode(string):
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"""URL encode a string without using string methods"""
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result = []
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safe_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.~"
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for char in string:
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if char in safe_chars:
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result.append(char)
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else:
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# result.append('%' + format(ord(char), '02X'))
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# Converted to % formatting:
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special_char = "%%%02X" % ord(char)
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print( f"{char} --> {special_char}")
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result.append(special_char)
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return ''.join(result)
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@staticmethod
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def encode_utf8(string):
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"""URL encode a string with proper UTF-8 handling"""
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result = []
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safe_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.~"
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for char in string:
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if char in safe_chars:
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result.append(char)
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else:
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# UTF-8 encoding for proper URL encoding
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utf8_bytes = char.encode('utf-8')
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for byte in utf8_bytes:
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result.append(f"%{byte:02X}")
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return ''.join(result)
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@staticmethod
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def encode_plus(string):
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encoded = URLEncoder.encode(string)
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return encoded.replace('%20', '+')
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@staticmethod
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def decode(encoded_string):
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result = []
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i = 0
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while i < len(encoded_string):
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if encoded_string[i] == '%' and i + 2 < len(encoded_string):
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hex_code = encoded_string[i+1:i+3]
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result.append(chr(int(hex_code, 16)))
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i += 3
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elif encoded_string[i] == '+':
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result.append(' ')
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i += 1
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else:
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result.append(encoded_string[i])
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i += 1
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return ''.join(result)
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@staticmethod
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def encode_params(params):
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pairs = []
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for key, value in params.items():
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pairs.append(f"{URLEncoder.encode(str(key))}={URLEncoder.encode(str(value))}")
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return '&'.join(pairs)
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