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lmZmZ dd lmZ dd lmZmZ dd lmZmZmZ ddlm Z ddl m Z m Z m Z G d de!« Z"ddZ# G d d« Z$y)zLazy ZIP over HTTPé )Ú annotationsÚHTTPRangeRequestUnsupportedÚdist_from_wheel_url)Ú bisect_leftÚ bisect_right)Ú Generator)Úcontextmanager)ÚNamedTemporaryFile)ÚAny)Ú
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This uses HTTP range requests to only fetch the portion of the wheel
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If such requests are not supported, HTTPRangeRequestUnsupported
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N)ÚLazyZipOverHTTPr Únamer r )r! ÚurlÚsessionÚzfÚwheels r r r sM ô
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Zd d Zd d d ZddZd!dZd"dZed#d« ZddZef d$dZ d%dZd&dZy )'r a File-like object mapped to a ZIP file over HTTP.
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during initialization.
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Ø!# Ø $,,×*Ñ*¨?¸FÓCÑ CÜ-Ð.NÓOÐ OØ Õr c ó y)z!Opening mode, which is always rb.Úrbr ©r9 s r ÚmodezLazyZipOverHTTP.modeD s ð r c ó. | j j S )z Path to the underlying file.)r3 r! r> s r r! zLazyZipOverHTTP.nameI s ð zzÐ r c ó y)z9Return whether random access is supported, which is True.Tr r> s r ÚseekablezLazyZipOverHTTP.seekableN ó àr c ó8 | j j « y)zClose the file.N)r3 Úcloser> s r rE zLazyZipOverHTTP.closeR s à
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×ÑÕr c ó. | j j S )zWhether the file is closed.)r3 Úclosedr> s r rG zLazyZipOverHTTP.closedV s ð zz× Ñ Ð r c ó t || j « }| j « | j }}|dk r|nt ||z |« }t d||z
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« | j j |« S )zäRead up to size bytes from the object and return them.
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As a convenience, if size is unspecified or -1,
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r é )Úmaxr0 Útellr2 ÚminÚ _downloadr3 Úread)r9 ÚsizeÚ download_sizeÚstartÚlengthÚstops r rN zLazyZipOverHTTP.read[ sx ô D $×"2Ñ"2Ó3 Ø T§\¡\vØ v¤s¨5°=Ñ+@À&Ó'IÜAtmÑ+Ó,Ø ud QhÔ'ØzztÓ$Ð$r c ó y)z3Return whether the file is readable, which is True.Tr r> s r ÚreadablezLazyZipOverHTTP.readablei rC r c ó: | j j ||« S )a- Change stream position and return the new absolute position.
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Seek to offset relative position indicated by whence:
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* 0: Start of stream (the default). pos should be >= 0;
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* 2: End of stream - pos usually negative.
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)r3 Úseek)r9 ÚoffsetÚwhences r rW zLazyZipOverHTTP.seekm s ð zzv vÓ.Ð.r c ó6 | j j « S )z Return the current position.)r3 rK r> s r rK zLazyZipOverHTTP.tellw s àzzÓ Ð r Nc ó8 | j j |« S )zÌResize the stream to the given size in bytes.
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If size is unspecified resize to the current position.
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The current stream position isn't changed.
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Return the new file size.
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)r3 r4 )r9 rO s r r4 zLazyZipOverHTTP.truncate{ s ð zz×"Ñ" 4Ó(Ð(r c ó y)z Return False.Fr r> s r ÚwritablezLazyZipOverHTTP.writable
s àr c ó: | j j « | S ©N)r3 Ú __enter__r> s r r` zLazyZipOverHTTP.__enter__ s Ø
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×ÑSÒ!r c # ó K | j « } d | j |« y# | j |« w xY ww)zyReturn a context manager keeping the position.
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}t t d|| j « « D ]; }| j ||« | j « 5 t | « ddd« y y# t $ r Y nw xY w ddd« X# 1 sw Y axY w)z1Check and download until the file is a valid ZIP.rI r N)r2 ÚreversedÚranger0 rM rf r r )r9 ÚendrQ s r r8 zLazyZipOverHTTP._check_zip s àllQÑ Ü e A s¨D×,<Ñ,<Ó =Ó>ò
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f | dz } ||k r||f |g|gc| j || | j || yw)a/ Return a generator of intervals to be fetched.
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Args:
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start (int): Start of needed interval
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end (int): End of needed interval
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left (int): Index of first overlapping downloaded data
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right (int): Index after last overlapping downloaded data
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