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diff --git a/src/printer_internal.h b/src/printer_internal.h new file mode 100644 index 0000000..c835567 --- /dev/null +++ b/src/printer_internal.h @@ -0,0 +1,218 @@ +/** + * @file printer_internal.h + * @author Radek Krejci <rkrejci@cesnet.cz> + * @brief Internal structures and functions for libyang + * + * Copyright (c) 2015-2019 CESNET, z.s.p.o. + * + * This source code is licensed under BSD 3-Clause License (the "License"). + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://opensource.org/licenses/BSD-3-Clause + */ + +#ifndef LY_PRINTER_INTERNAL_H_ +#define LY_PRINTER_INTERNAL_H_ + +#include "out.h" +#include "plugins_exts.h" +#include "printer_data.h" +#include "printer_schema.h" + +struct lysp_module; +struct lysp_submodule; + +/** + * @brief Generic YANG schema printer context + * + * Note that the YANG extensions API provides getter to the members for the extension plugins. + */ +struct lyspr_ctx { + struct ly_out *out; /**< output specification */ + uint16_t level; /**< current indentation level: 0 - no formatting, >= 1 indentation levels */ + uint16_t flags; /**< internal flags for use by printer */ + uint32_t options; /**< Schema output options (see @ref schemaprinterflags). */ + const struct lys_module *module; /**< schema to print */ +}; + +/** + * @brief YANG schema provided from plugin extension for printer_tree. + * + * The YANG extensions API provides setting functions. + */ +struct lyspr_tree_schema { + ly_bool compiled; /**< Flag if it is a compiled schema. */ + + union { + struct lysc_node *ctree; /**< Compiled schema. */ + struct lysp_node *ptree; /**< Parsed schema. */ + }; + union { + lyplg_ext_sprinter_ctree_override_clb cn_overr; /**< Override clb function for compiled node. */ + lyplg_ext_sprinter_ptree_override_clb pn_overr; /**< Override clb function for parsed node. */ + }; +}; + +/** + * @brief Context used between plugin extension and printer_tree. + * + * The YANG extensions API provides setting functions. + */ +struct lyspr_tree_ctx { + struct lyspr_tree_schema *schemas; /**< Parsed or compiled schemas ([sized array](@ref sizedarrays)) */ + void *plugin_priv; /**< Private data from plugin which printer_tree does not use. */ + + void (*free_plugin_priv)(void *plugin_priv); /**< Release function for lyspr_tree_ctx.plugin_priv. */ +}; + +/** + * @brief YANG printer of the parsed module. Full YANG printer. + * + * @param[in] out Output specification. + * @param[in] modp Parsed module to print. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR yang_print_parsed_module(struct ly_out *out, const struct lysp_module *modp, uint32_t options); + +/** + * @brief Helper macros for data printers + */ +#define DO_FORMAT (!(pctx->options & LY_PRINT_SHRINK)) +#define LEVEL pctx->level /**< current level */ +#define INDENT (DO_FORMAT ? (LEVEL)*2 : 0),"" /**< indentation parameters for printer functions */ +#define LEVEL_INC LEVEL++ /**< increase indentation level */ +#define LEVEL_DEC LEVEL-- /**< decrease indentation level */ + +#define XML_NS_INDENT 8 + +/** + * @brief YANG printer of the parsed submodule. Full YANG printer. + * + * @param[in] out Output specification. + * @param[in] submodp Parsed submodule to print. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR yang_print_parsed_submodule(struct ly_out *out, const struct lysp_submodule *submodp, uint32_t options); + +/** + * @brief YANG printer of the compiled schemas. + * + * This printer provides information about modules how they are understood by libyang. + * Despite the format is inspired by YANG, it is not fully compatible and should not be + * used as a standard YANG format. + * + * @param[in] out Output specification. + * @param[in] module Schema to be printed (the compiled member is used). + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR yang_print_compiled(struct ly_out *out, const struct lys_module *module, uint32_t options); + +/** + * @brief YANG printer of the compiled schema node + * + * This printer provides information about modules how they are understood by libyang. + * Despite the format is inspired by YANG, it is not fully compatible and should not be + * used as a standard YANG format. + * + * @param[in] out Output specification. + * @param[in] node Schema node to be printed including all its substatements. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR yang_print_compiled_node(struct ly_out *out, const struct lysc_node *node, uint32_t options); + +/** + * @brief YIN printer of the parsed module. Full YIN printer. + * + * @param[in] out Output specification. + * @param[in] modp Parsed module to print. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR yin_print_parsed_module(struct ly_out *out, const struct lysp_module *modp, uint32_t options); + +/** + * @brief YIN printer of the parsed submodule. Full YIN printer. + * + * @param[in] out Output specification. + * @param[in] submodp Parsed submodule to print. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR yin_print_parsed_submodule(struct ly_out *out, const struct lysp_submodule *submodp, uint32_t options); + +/** + * @brief Full YANG Tree Diagram printer. + * + * The module should be compiled and the @ref contextoptions must be set to LY_CTX_SET_PRIV_PARSED. + * If not, the printer will use parsed (unresolved) YANG schema tree, which means, + * for example, that `grouping` sections will be on the output. + * + * @param[in] out Output specification. + * @param[in] module Main module. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @param[in] line_length Maximum characters to be printed on a line, 0 for unlimited. Only for ::LYS_OUT_TREE printer. + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR tree_print_module(struct ly_out *out, const struct lys_module *module, uint32_t options, + size_t line_length); + +/** + * @brief YANG Tree Diagram printer of the parsed submodule. Full Tree printer. + * + * @param[in] out Output specification. + * @param[in] submodp Parsed submodule to print. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @param[in] line_length Maximum characters to be printed on a line, 0 for unlimited. Only for ::LYS_OUT_TREE printer. + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR tree_print_parsed_submodule(struct ly_out *out, const struct lysp_submodule *submodp, uint32_t options, + size_t line_length); + +/** + * @brief YANG Tree Diagram printer of the compiled schema node. + * + * @param[in] out Output specification. + * @param[in] node Schema node to be printed including all its substatements. + * @param[in] options Schema output options (see @ref schemaprinterflags). + * @param[in] line_length Maximum characters to be printed on a line, 0 for unlimited. Only for ::LYS_OUT_TREE printer. + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR tree_print_compiled_node(struct ly_out *out, const struct lysc_node *node, uint32_t options, + size_t line_length); + +/** + * @brief XML printer of YANG data. + * + * @param[in] out Output specification. + * @param[in] root The root element of the (sub)tree to print. + * @param[in] options [Data printer flags](@ref dataprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR xml_print_data(struct ly_out *out, const struct lyd_node *root, uint32_t options); + +/** + * @brief JSON printer of YANG data. + * + * @param[in] out Output specification. + * @param[in] root The root element of the (sub)tree to print. + * @param[in] options [Data printer flags](@ref dataprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR json_print_data(struct ly_out *out, const struct lyd_node *root, uint32_t options); + +/** + * @brief LYB printer of YANG data. + * + * @param[in] out Output structure. + * @param[in] root The root element of the (sub)tree to print. + * @param[in] options [Data printer flags](@ref dataprinterflags). + * @return LY_ERR value, number of the printed bytes is updated in ::ly_out.printed. + */ +LY_ERR lyb_print_data(struct ly_out *out, const struct lyd_node *root, uint32_t options); + +#endif /* LY_PRINTER_INTERNAL_H_ */ |