csv_reader

Simple csv reader written in C

Usage notes

• The CSV file format requires to have an header with the field's name
• CR and CRLF are both supported
• The application automatically allocates memory in function parameters- remember to free them before using them again or when they are not needed anymore
• Defining the preprocessor macro INTERNAL_GETLINE allows to use this parser inside ESP-IDF which provides __getline() instead of getline()

Usage

Running Cmake build process will produce a static library under build/src/libcsv_reader.a which you have to link when building your project.

You should also add src/include/ to your include path in order to include src/include/csv_reader.h.

/*
    file.csv:

    f1,f2,f3
    1,2,3
*/

    #include "csv_reader.h"

    // Initialization
    csv_reader_t csv;
    csv_reader_init(&csv, "file.csv", ',');

    // Read the CSV header
    csv_reader_line_t* header;
    csv_reader_getheader(&csv, &header);
    printf("%s", header.line); // "f1,f2,f3"

    // Read each line and obtain a specific field
    csv_reader_line_t* line;
    char* field = NULL;
    while(!csv_reader_getline(&csv, &line)){
        csv_reader_getfield(&csv, &line, "f1", &field);
        printf("%s", field); // "1"
    }

    // Clean all the allocated memory
    csv_reader_line_free(line);
    csv_reader_line_free(header);
    csvreader_deinit(&csv);

TODO

• better cmake
• error codes
• doc