cef/include/capi/cef_parser_capi.h

// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
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#ifndef CEF_INCLUDE_CAPI_CEF_PARSER_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_PARSER_CAPI_H_
#pragma once

#include "include/capi/cef_base_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

///
/// Combines specified |base_url| and |relative_url| into |resolved_url|.
/// Returns false (0) if one of the URLs is NULL or invalid.
///
CEF_EXPORT int cef_resolve_url(const cef_string_t* base_url,
                               const cef_string_t* relative_url,
                               cef_string_t* resolved_url);

///
/// Parse the specified |url| into its component parts. Returns false (0) if the
/// URL is NULL or invalid.
///
CEF_EXPORT int cef_parse_url(const cef_string_t* url,
                             struct _cef_urlparts_t* parts);

///
/// Creates a URL from the specified |parts|, which must contain a non-NULL spec
/// or a non-NULL host and path (at a minimum), but not both. Returns false (0)
/// if |parts| isn't initialized as described.
///
CEF_EXPORT int cef_create_url(const struct _cef_urlparts_t* parts,
                              cef_string_t* url);

///
/// This is a convenience function for formatting a URL in a concise and human-
/// friendly way to help users make security-related decisions (or in other
/// circumstances when people need to distinguish sites, origins, or otherwise-
/// simplified URLs from each other). Internationalized domain names (IDN) may
/// be presented in Unicode if the conversion is considered safe. The returned
/// value will (a) omit the path for standard schemes, excepting file and
/// filesystem, and (b) omit the port if it is the default for the scheme. Do
/// not use this for URLs which will be parsed or sent to other applications.
///
// The resulting string must be freed by calling cef_string_userfree_free().
CEF_EXPORT cef_string_userfree_t
cef_format_url_for_security_display(const cef_string_t* origin_url);

///
/// Returns the mime type for the specified file extension or an NULL string if
/// unknown.
///
// The resulting string must be freed by calling cef_string_userfree_free().
CEF_EXPORT cef_string_userfree_t
cef_get_mime_type(const cef_string_t* extension);

///
/// Get the extensions associated with the given mime type. This should be
/// passed in lower case. There could be multiple extensions for a given mime
/// type, like "html,htm" for "text/html", or "txt,text,html,..." for "text/*".
/// Any existing elements in the provided vector will not be erased.
///
CEF_EXPORT void cef_get_extensions_for_mime_type(const cef_string_t* mime_type,
                                                 cef_string_list_t extensions);

///
/// Encodes |data| as a base64 string.
///
// The resulting string must be freed by calling cef_string_userfree_free().
CEF_EXPORT cef_string_userfree_t cef_base64encode(const void* data,
                                                  size_t data_size);

///
/// Decodes the base64 encoded string |data|. The returned value will be NULL if
/// the decoding fails.
///
CEF_EXPORT struct _cef_binary_value_t* cef_base64decode(
    const cef_string_t* data);

///
/// Escapes characters in |text| which are unsuitable for use as a query
/// parameter value. Everything except alphanumerics and -_.!~*'() will be
/// converted to "%XX". If |use_plus| is true (1) spaces will change to "+". The
/// result is basically the same as encodeURIComponent in Javacript.
///
// The resulting string must be freed by calling cef_string_userfree_free().
CEF_EXPORT cef_string_userfree_t cef_uriencode(const cef_string_t* text,
                                               int use_plus);

///
/// Unescapes |text| and returns the result. Unescaping consists of looking for
/// the exact pattern "%XX" where each X is a hex digit and converting to the
/// character with the numerical value of those digits (e.g. "i%20=%203%3b"
/// unescapes to "i = 3;"). If |convert_to_utf8| is true (1) this function will
/// attempt to interpret the initial decoded result as UTF-8. If the result is
/// convertable into UTF-8 it will be returned as converted. Otherwise the
/// initial decoded result will be returned.  The |unescape_rule| parameter
/// supports further customization the decoding process.
///
// The resulting string must be freed by calling cef_string_userfree_free().
CEF_EXPORT cef_string_userfree_t
cef_uridecode(const cef_string_t* text,
              int convert_to_utf8,
              cef_uri_unescape_rule_t unescape_rule);

///
/// Parses the specified |json_string| and returns a dictionary or list
/// representation. If JSON parsing fails this function returns NULL.
///
CEF_EXPORT struct _cef_value_t* cef_parse_json(
    const cef_string_t* json_string,
    cef_json_parser_options_t options);

///
/// Parses the specified UTF8-encoded |json| buffer of size |json_size| and
/// returns a dictionary or list representation. If JSON parsing fails this
/// function returns NULL.
///
CEF_EXPORT struct _cef_value_t* cef_parse_json_buffer(
    const void* json,
    size_t json_size,
    cef_json_parser_options_t options);

///
/// Parses the specified |json_string| and returns a dictionary or list
/// representation. If JSON parsing fails this function returns NULL and
/// populates |error_msg_out| with a formatted error message.
///
CEF_EXPORT struct _cef_value_t* cef_parse_jsonand_return_error(
    const cef_string_t* json_string,
    cef_json_parser_options_t options,
    cef_string_t* error_msg_out);

///
/// Generates a JSON string from the specified root |node| which should be a
/// dictionary or list value. Returns an NULL string on failure. This function
/// requires exclusive access to |node| including any underlying data.
///
// The resulting string must be freed by calling cef_string_userfree_free().
CEF_EXPORT cef_string_userfree_t
cef_write_json(struct _cef_value_t* node, cef_json_writer_options_t options);

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_CEF_PARSER_CAPI_H_