Function text_read_file

src/cli/config_text_edit.c:385–499

}

static int text_read_file(const char *path, char **data_out, size_t *len_out,
                          text_file_snapshot_t *snapshot_out) {
    if (!path || !data_out || !len_out || !snapshot_out) {
        return TEXT_ERROR;
    }
    *data_out = NULL;
    *len_out = 0U;
    memset(snapshot_out, 0, sizeof(*snapshot_out));

#ifdef _WIN32
    wchar_t *wide_path = cbm_utf8_to_wide(path);
    if (!wide_path) {
        return TEXT_ERROR;
    }
    HANDLE handle = CreateFileW(
        wide_path, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
        OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OPEN_REPARSE_POINT, NULL);
    free(wide_path);
    if (handle == INVALID_HANDLE_VALUE) {
        DWORD error = GetLastError();
        if (error != ERROR_FILE_NOT_FOUND && error != ERROR_PATH_NOT_FOUND) {
            return TEXT_ERROR;
        }
        char *empty = (char *)calloc(1U, 1U);
        if (!empty) {
            return TEXT_ERROR;
        }
        *data_out = empty;
        return TEXT_OK;
    }
    text_file_snapshot_t before;
    if (text_snapshot_from_handle(handle, &before) != TEXT_OK) {
        CloseHandle(handle);
        return TEXT_ERROR;
    }
    size_t len = (size_t)before.size;
    char *data = (char *)malloc(len + 1U);
    if (!data) {
        CloseHandle(handle);
        return TEXT_ERROR;
    }
    DWORD read_count = 0U;
    BOOL read_ok = ReadFile(handle, data, (DWORD)len, &read_count, NULL);
    text_file_snapshot_t after;
    int after_result = text_snapshot_from_handle(handle, &after);
    BOOL close_ok = CloseHandle(handle);
    if (!read_ok || read_count != (DWORD)len || after_result != TEXT_OK || !close_ok ||
        !text_snapshot_equal(&before, &after)) {
        free(data);
        return TEXT_ERROR;
    }
#else
#ifndef O_NOFOLLOW
    (void)path;
    return TEXT_ERROR;
#else
    int flags = O_RDONLY | O_NOFOLLOW | O_NONBLOCK;
#ifdef O_CLOEXEC