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35 lines
977 B
35 lines
977 B
#ifndef ESPROFSFORMAT_H
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#define ESPROFSFORMAT_H
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#include <stdint.h>
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/*
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Stupid cpio-like tool to make read-only 'filesystems' that live on the flash SPI chip of the module.
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Can (will) use lzf compression (when I come around to it) to make shit quicker. Aligns names, files,
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headers on 4-byte boundaries so the SPI abstraction hardware in the ESP8266 doesn't crap on itself
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when trying to do a <4byte or unaligned read.
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*/
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/*
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The idea 'borrows' from cpio: it's basically a concatenation of {header, filename, file} data.
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Header, filename and file data is 32-bit aligned. The last file is indicated by data-less header
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with the FLAG_LASTFILE flag set.
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*/
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#define FLAG_LASTFILE (1<<0)
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#define FLAG_GZIP (1<<1)
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#define COMPRESS_NONE 0
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#define COMPRESS_HEATSHRINK 1
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#define ESPFS_MAGIC 0x73665345
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typedef struct {
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int32_t magic;
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int8_t flags;
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int8_t compression;
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int16_t nameLen;
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int32_t fileLenComp;
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int32_t fileLenDecomp;
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} __attribute__((packed)) EspFsHeader;
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#endif
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