7f94ef3179
* Flipper file format: remove C wrapper * Flipper file format: open append, float, uint32_t as array, delete key, value count * Flipper file format: fix scratchpad location * Flipper file format: add EOL on append * SubGHZ keystore: update encryption type read and write * Flipper File Format: enhanced version * Flipper File Format: fix naming * Flipper File Format: fix "open" subset naming * Flipper File Format: tests * Flipper File Format: file helper naming * SubGHZ keystore: merge with current state of flipper file format * Flipper File Format: update make recipe * Flipper File Format: open new file method
458 lines
13 KiB
C
458 lines
13 KiB
C
/**
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* @file flipper-file.h
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* Flipper File Format helper library.
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*
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* Flipper File Format is a fairly simple format for storing data in a file.
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*
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* Flipper file structure:
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*
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* ~~~~~~~~~~~~~~~~~~~~~
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* # Commentary
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* Field name: field value
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* ~~~~~~~~~~~~~~~~~~~~~
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*
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* Lines starting with the # character are ignored (considered as comments). The separator between the name of the value and the value itself is the string ": ".
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*
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* Currently supported types:
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*
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* ~~~~~~~~~~~~~~~~~~~~~
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* String: text
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* Int32: 1 2 -3 4
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* Uint32: 1 2 3 4
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* Float: 1.0 1234.654
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* Hex: A4 B3 C2 D1 12 FF
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* ~~~~~~~~~~~~~~~~~~~~~
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*
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* End of line is LF when writing, but CR is supported when reading.
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*
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* The library is designed in such a way that comments and field values are completely ignored when searching for keys, that is, they do not consume memory.
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*
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* File example:
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*
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* ~~~~~~~~~~~~~~~~~~~~~
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* Filetype: Flipper Test File
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* Version: 1
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* # Just test file
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* String: String value
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* UINT: 1234
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* Hex: 00 01 FF A3
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* ~~~~~~~~~~~~~~~~~~~~~
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*
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* Writing:
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*
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* ~~~~~~~~~~~~~~~~~~~~~
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* FlipperFile file = flipper_file_alloc(storage);
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*
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* do {
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* const uint32_t version = 1;
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* const char* string_value = "String value";
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* const uint32_t uint32_value = 1234;
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* const uint16_t array_size = 4;
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* const uint8_t* array[array_size] = {0x00, 0x01, 0xFF, 0xA3};
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*
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* if(!flipper_file_open_new(file, "/ext/flipper_file_test")) break;
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* if(!flipper_file_write_header_cstr(file, "Flipper Test File", version)) break;
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* if(!flipper_file_write_comment_cstr(file, "Just test file")) break;
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* if(!flipper_file_write_string_cstr(file, "String", string_value)) break;
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* if(!flipper_file_flipper_file_write_uint32(file, "UINT", &uint32_value, 1)) break;
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* if(!flipper_file_write_hex(file, "Hex Array", array, array_size)) break;
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*
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* // signal that the file was written successfully
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* } while(0);
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*
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* flipper_file_close(file);
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* flipper_file_free(file);
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* ~~~~~~~~~~~~~~~~~~~~~
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*
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* Reading:
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*
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* ~~~~~~~~~~~~~~~~~~~~~
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* FlipperFile file = flipper_file_alloc(storage);
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*
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* do {
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* uint32_t version = 1;
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* string_t file_type;
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* string_t string_value;
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* uint32_t uint32_value = 1;
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* uint16_t array_size = 4;
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* uint8_t* array[array_size] = {0};
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* string_init(file_type);
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* string_init(string_value);
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*
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* if(!flipper_file_open_existing(file, "/ext/flipper_file_test")) break;
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* if(!flipper_file_read_header(file, file_type, &version)) break;
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* if(!flipper_file_read_string(file, "String", string_value)) break;
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* if(!flipper_file_read_uint32(file, "UINT", &uint32_value, 1)) break;
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* if(!flipper_file_read_hex(file, "Hex Array", array, array_size)) break;
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*
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* // signal that the file was read successfully
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* } while(0);
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*
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* flipper_file_close(file);
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* flipper_file_free(file);
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* ~~~~~~~~~~~~~~~~~~~~~
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*
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*/
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#pragma once
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#include <stdint.h>
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#include <mlib/m-string.h>
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#include <storage/storage.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** FlipperFile type anonymous structure. */
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typedef struct FlipperFile FlipperFile;
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/**
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* Allocate FlipperFile.
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* @param storage storage api
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* @return FlipperFile* Pointer to a FlipperFile instance
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*/
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FlipperFile* flipper_file_alloc(Storage* storage);
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/**
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* Free FlipperFile.
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* @param flipper_file Pointer to a FlipperFile instance
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*/
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void flipper_file_free(FlipperFile* flipper_file);
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/**
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* Open existing file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param filename File name and path
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* @return True on success
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*/
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bool flipper_file_open_existing(FlipperFile* flipper_file, const char* filename);
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/**
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* Open existing file for writing and add values to the end of file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param filename File name and path
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* @return True on success
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*/
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bool flipper_file_open_append(FlipperFile* flipper_file, const char* filename);
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/**
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* Open file. Creates a new file, or deletes the contents of the file if it already exists.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param filename File name and path
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* @return True on success
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*/
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bool flipper_file_open_always(FlipperFile* flipper_file, const char* filename);
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/**
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* Open file. Creates a new file, fails if file already exists.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param filename File name and path
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* @return True on success
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*/
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bool flipper_file_open_new(FlipperFile* flipper_file, const char* filename);
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/**
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* Close the file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @return True on success
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*/
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bool flipper_file_close(FlipperFile* flipper_file);
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/**
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* Rewind the file RW pointer.
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* @param flipper_file Pointer to a FlipperFile instance
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* @return True on success
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*/
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bool flipper_file_rewind(FlipperFile* flipper_file);
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/**
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* Read the header (file type and version) from the file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param filetype File type string
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* @param version Version Value
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* @return True on success
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*/
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bool flipper_file_read_header(FlipperFile* flipper_file, string_t filetype, uint32_t* version);
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/**
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* Write the header (file type and version) to the file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param filetype File type string
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* @param version Version Value
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* @return True on success
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*/
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bool flipper_file_write_header(
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FlipperFile* flipper_file,
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string_t filetype,
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const uint32_t version);
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/**
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* Write the header (file type and version) to the file. Plain C string version.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param filetype File type string
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* @param version Version Value
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* @return True on success
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*/
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bool flipper_file_write_header_cstr(
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FlipperFile* flipper_file,
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const char* filetype,
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const uint32_t version);
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/**
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* Get the count of values by key
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* @param flipper_file
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* @param key
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* @param count
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* @return bool
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*/
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bool flipper_file_get_value_count(FlipperFile* flipper_file, const char* key, uint32_t* count);
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/**
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* Read a string from a file by Key
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @return True on success
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*/
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bool flipper_file_read_string(FlipperFile* flipper_file, const char* key, string_t data);
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/**
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* Write key and string to file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @return True on success
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*/
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bool flipper_file_write_string(FlipperFile* flipper_file, const char* key, string_t data);
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/**
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* Write key and string to file. Plain C string version.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @return True on success
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*/
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bool flipper_file_write_string_cstr(FlipperFile* flipper_file, const char* key, const char* data);
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/**
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* Read array of uint32 from a file by Key
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_read_uint32(
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FlipperFile* flipper_file,
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const char* key,
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uint32_t* data,
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const uint16_t data_size);
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/**
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* Write key and array of uint32 to file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_write_uint32(
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FlipperFile* flipper_file,
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const char* key,
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const uint32_t* data,
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const uint16_t data_size);
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/**
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* Read array of int32 from a file by Key
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_read_int32(
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FlipperFile* flipper_file,
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const char* key,
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int32_t* data,
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const uint16_t data_size);
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/**
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* Write key and array of int32 to file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_write_int32(
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FlipperFile* flipper_file,
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const char* key,
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const int32_t* data,
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const uint16_t data_size);
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/**
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* Read array of float from a file by Key
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_read_float(
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FlipperFile* flipper_file,
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const char* key,
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float* data,
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const uint16_t data_size);
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/**
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* Write key and array of float to file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_write_float(
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FlipperFile* flipper_file,
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const char* key,
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const float* data,
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const uint16_t data_size);
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/**
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* Read hex array from a file by Key
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Value size
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* @return True on success
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*/
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bool flipper_file_read_hex(
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FlipperFile* flipper_file,
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const char* key,
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uint8_t* data,
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const uint16_t data_size);
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/**
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* Write key and hex array to file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_write_hex(
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FlipperFile* flipper_file,
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const char* key,
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const uint8_t* data,
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const uint16_t data_size);
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/**
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* Write comment to file.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param data Comment text
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* @return True on success
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*/
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bool flipper_file_write_comment(FlipperFile* flipper_file, string_t data);
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/**
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* Write comment to file. Plain C string version.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param data Comment text
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* @return True on success
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*/
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bool flipper_file_write_comment_cstr(FlipperFile* flipper_file, const char* data);
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/**
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* Removes the first matching key and its value from the file. Changes the RW pointer to an undefined position.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @return True on success
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*/
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bool flipper_file_delete_key(FlipperFile* flipper_file, const char* key);
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/**
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* Updates the value of the first matching key to a string value. Changes the RW pointer to an undefined position.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @return True on success
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*/
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bool flipper_file_update_string(FlipperFile* flipper_file, const char* key, string_t data);
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/**
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* Updates the value of the first matching key to a string value. Plain C version. Changes the RW pointer to an undefined position.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @return True on success
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*/
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bool flipper_file_update_string_cstr(FlipperFile* flipper_file, const char* key, const char* data);
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/**
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* Updates the value of the first matching key to a uint32 array value. Changes the RW pointer to an undefined position.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_update_uint32(
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FlipperFile* flipper_file,
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const char* key,
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const uint32_t* data,
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const uint16_t data_size);
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/**
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* Updates the value of the first matching key to a int32 array value. Changes the RW pointer to an undefined position.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_update_int32(
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FlipperFile* flipper_file,
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const char* key,
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const int32_t* data,
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const uint16_t data_size);
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/**
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* Updates the value of the first matching key to a float array value. Changes the RW pointer to an undefined position.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_update_float(
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FlipperFile* flipper_file,
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const char* key,
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const float* data,
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const uint16_t data_size);
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/**
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* Updates the value of the first matching key to a hex array value. Changes the RW pointer to an undefined position.
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* @param flipper_file Pointer to a FlipperFile instance
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* @param key Key
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* @param data Value
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* @param data_size Values count
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* @return True on success
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*/
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bool flipper_file_update_hex(
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FlipperFile* flipper_file,
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const char* key,
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const uint8_t* data,
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const uint16_t data_size);
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/** Get file descriptor.
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*
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* We higly don't recommend to use it.
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* This instance is owned by FlipperFile.
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* @param flipper_file
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* @return File*
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*/
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File* flipper_file_get_file(FlipperFile* flipper_file);
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#ifdef __cplusplus
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}
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#endif |