cef/include/capi/cef_command_line_capi.h

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

#include "include/capi/cef_base_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

///
/// Structure used to create and/or parse command line arguments. Arguments with
/// "--", "-" and, on Windows, "/" prefixes are considered switches. Switches
/// will always precede any arguments without switch prefixes. Switches can
/// optionally have a value specified using the "=" delimiter (e.g.
/// "-switch=value"). An argument of "--" will terminate switch parsing with all
/// subsequent tokens, regardless of prefix, being interpreted as non-switch
/// arguments. Switch names should be lowercase ASCII and will be converted to
/// such if necessary. Switch values will retain the original case and UTF8
/// encoding. This structure can be used before cef_initialize() is called.
///
typedef struct _cef_command_line_t {
  ///
  /// Base structure.
  ///
  cef_base_ref_counted_t base;

  ///
  /// Returns true (1) if this object is valid. Do not call any other functions
  /// if this function returns false (0).
  ///
  int(CEF_CALLBACK* is_valid)(struct _cef_command_line_t* self);

  ///
  /// Returns true (1) if the values of this object are read-only. Some APIs may
  /// expose read-only objects.
  ///
  int(CEF_CALLBACK* is_read_only)(struct _cef_command_line_t* self);

  ///
  /// Returns a writable copy of this object.
  ///
  struct _cef_command_line_t*(CEF_CALLBACK* copy)(
      struct _cef_command_line_t* self);

  ///
  /// Initialize the command line with the specified |argc| and |argv| values.
  /// The first argument must be the name of the program. This function is only
  /// supported on non-Windows platforms.
  ///
  void(CEF_CALLBACK* init_from_argv)(struct _cef_command_line_t* self,
                                     int argc,
                                     const char* const* argv);

  ///
  /// Initialize the command line with the string returned by calling
  /// GetCommandLineW(). This function is only supported on Windows.
  ///
  void(CEF_CALLBACK* init_from_string)(struct _cef_command_line_t* self,
                                       const cef_string_t* command_line);

  ///
  /// Reset the command-line switches and arguments but leave the program
  /// component unchanged.
  ///
  void(CEF_CALLBACK* reset)(struct _cef_command_line_t* self);

  ///
  /// Retrieve the original command line string as a vector of strings. The argv
  /// array: `{ program, [(--|-|/)switch[=value]]*, [--], [argument]* }`
  ///
  void(CEF_CALLBACK* get_argv)(struct _cef_command_line_t* self,
                               cef_string_list_t argv);

  ///
  /// Constructs and returns the represented command line string. Use this
  /// function cautiously because quoting behavior is unclear.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t(CEF_CALLBACK* get_command_line_string)(
      struct _cef_command_line_t* self);

  ///
  /// Get the program part of the command line string (the first item).
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t(CEF_CALLBACK* get_program)(
      struct _cef_command_line_t* self);

  ///
  /// Set the program part of the command line string (the first item).
  ///
  void(CEF_CALLBACK* set_program)(struct _cef_command_line_t* self,
                                  const cef_string_t* program);

  ///
  /// Returns true (1) if the command line has switches.
  ///
  int(CEF_CALLBACK* has_switches)(struct _cef_command_line_t* self);

  ///
  /// Returns true (1) if the command line contains the given switch.
  ///
  int(CEF_CALLBACK* has_switch)(struct _cef_command_line_t* self,
                                const cef_string_t* name);

  ///
  /// Returns the value associated with the given switch. If the switch has no
  /// value or isn't present this function returns the NULL string.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t(CEF_CALLBACK* get_switch_value)(
      struct _cef_command_line_t* self,
      const cef_string_t* name);

  ///
  /// Returns the map of switch names and values. If a switch has no value an
  /// NULL string is returned.
  ///
  void(CEF_CALLBACK* get_switches)(struct _cef_command_line_t* self,
                                   cef_string_map_t switches);

  ///
  /// Add a switch to the end of the command line. If the switch has no value
  /// pass an NULL value string.
  ///
  void(CEF_CALLBACK* append_switch)(struct _cef_command_line_t* self,
                                    const cef_string_t* name);

  ///
  /// Add a switch with the specified value to the end of the command line.
  ///
  void(CEF_CALLBACK* append_switch_with_value)(struct _cef_command_line_t* self,
                                               const cef_string_t* name,
                                               const cef_string_t* value);

  ///
  /// True if there are remaining command line arguments.
  ///
  int(CEF_CALLBACK* has_arguments)(struct _cef_command_line_t* self);

  ///
  /// Get the remaining command line arguments.
  ///
  void(CEF_CALLBACK* get_arguments)(struct _cef_command_line_t* self,
                                    cef_string_list_t arguments);

  ///
  /// Add an argument to the end of the command line.
  ///
  void(CEF_CALLBACK* append_argument)(struct _cef_command_line_t* self,
                                      const cef_string_t* argument);

  ///
  /// Insert a command before the current command. Common for debuggers, like
  /// "valgrind" or "gdb --args".
  ///
  void(CEF_CALLBACK* prepend_wrapper)(struct _cef_command_line_t* self,
                                      const cef_string_t* wrapper);
} cef_command_line_t;

///
/// Create a new cef_command_line_t instance.
///
CEF_EXPORT cef_command_line_t* cef_command_line_create(void);

///
/// Returns the singleton global cef_command_line_t object. The returned object
/// will be read-only.
///
CEF_EXPORT cef_command_line_t* cef_command_line_get_global(void);

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_CEF_COMMAND_LINE_CAPI_H_