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38 lines
1 KiB
Python
38 lines
1 KiB
Python
"""Provider-neutral message formatting helpers."""
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from __future__ import annotations
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MAX_GATEWAY_TEXT_CHARS = 4096
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def split_text_message(
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text: str,
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*,
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max_chars: int = MAX_GATEWAY_TEXT_CHARS,
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) -> list[str]:
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"""Split outbound text at readable boundaries without exceeding platform caps."""
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if not text:
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return [""]
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chunks: list[str] = []
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remaining = text
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while remaining:
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if len(remaining) <= max_chars:
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chunks.append(remaining)
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break
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candidate = remaining[:max_chars]
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boundary = max(
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candidate.rfind("\n\n"),
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candidate.rfind("\n"),
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candidate.rfind(". "),
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candidate.rfind(" "),
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)
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if boundary <= max(200, max_chars // 2):
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boundary = max_chars
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split_at = boundary + (2 if candidate[boundary : boundary + 2] == ". " else 1)
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chunk = remaining[:split_at].rstrip()
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chunks.append(chunk or remaining[:max_chars])
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remaining = remaining[split_at:].lstrip()
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return chunks
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