C++ wcstring_list_t::at方法代码示例

/// Silly function.
static void builtin_complete_add2(const wchar_t *cmd, int cmd_type, const wchar_t *short_opt,
                                  const wcstring_list_t &gnu_opt, const wcstring_list_t &old_opt,
                                  int result_mode, const wchar_t *condition, const wchar_t *comp,
                                  const wchar_t *desc, int flags) {
    size_t i;
    const wchar_t *s;

    for (s = short_opt; *s; s++) {
        complete_add(cmd, cmd_type, wcstring(1, *s), option_type_short, result_mode, condition,
                     comp, desc, flags);
    }

    for (i = 0; i < gnu_opt.size(); i++) {
        complete_add(cmd, cmd_type, gnu_opt.at(i), option_type_double_long, result_mode, condition,
                     comp, desc, flags);
    }

    for (i = 0; i < old_opt.size(); i++) {
        complete_add(cmd, cmd_type, old_opt.at(i), option_type_single_long, result_mode, condition,
                     comp, desc, flags);
    }

    if (old_opt.empty() && gnu_opt.empty() && wcslen(short_opt) == 0) {
        complete_add(cmd, cmd_type, wcstring(), option_type_args_only, result_mode, condition, comp,
                     desc, flags);
    }
}

static void builtin_complete_remove_cmd(const wcstring &cmd,
                                        int cmd_type,
                                        const wchar_t *short_opt,
                                        const wcstring_list_t &gnu_opt,
                                        const wcstring_list_t &old_opt)
{
    bool removed = false;
    size_t i;
    for (i=0; short_opt[i] != L'\0'; i++)
    {
        complete_remove(cmd, cmd_type, wcstring(1, short_opt[i]), option_type_short);
        removed = true;
    }
    
    for (i=0; i < old_opt.size(); i++)
    {
        complete_remove(cmd, cmd_type, old_opt.at(i), option_type_single_long);
        removed = true;
    }
    
    for (i=0; i < gnu_opt.size(); i++)
    {
        complete_remove(cmd, cmd_type, gnu_opt.at(i), option_type_double_long);
        removed = true;
    }
    
    if (! removed)
    {
        // This means that all loops were empty
        complete_remove_all(cmd, cmd_type);
    }
}

/**
   Silly function
*/
static void  builtin_complete_remove(const wcstring_list_t &cmd,
                                     const wcstring_list_t &path,
                                     const wchar_t *short_opt,
                                     const wcstring_list_t &gnu_opt,
                                     const wcstring_list_t &old_opt)
{
    for (size_t i=0; i<cmd.size(); i++)
    {
        builtin_complete_remove2(cmd.at(i).c_str(),
                                 COMMAND,
                                 short_opt,
                                 gnu_opt,
                                 old_opt);
    }

    for (size_t i=0; i<path.size(); i++)
    {
        builtin_complete_remove2(path.at(i).c_str(),
                                 PATH,
                                 short_opt,
                                 gnu_opt,
                                 old_opt);
    }

}

/**
   Silly function
*/
static void  builtin_complete_add(const wcstring_list_t &cmd,
                                  const wcstring_list_t &path,
                                  const wchar_t *short_opt,
                                  wcstring_list_t &gnu_opt,
                                  wcstring_list_t &old_opt,
                                  int result_mode,
                                  int authoritative,
                                  const wchar_t *condition,
                                  const wchar_t *comp,
                                  const wchar_t *desc,
                                  int flags)
{
    for (size_t i=0; i<cmd.size(); i++)
    {
        builtin_complete_add2(cmd.at(i).c_str(),
                              COMMAND,
                              short_opt,
                              gnu_opt,
                              old_opt,
                              result_mode,
                              condition,
                              comp,
                              desc,
                              flags);

        if (authoritative != -1)
        {
            complete_set_authoritative(cmd.at(i).c_str(),
                                       COMMAND,
                                       authoritative);
        }

    }

    for (size_t i=0; i<path.size(); i++)
    {
        builtin_complete_add2(path.at(i).c_str(),
                              PATH,
                              short_opt,
                              gnu_opt,
                              old_opt,
                              result_mode,
                              condition,
                              comp,
                              desc,
                              flags);

        if (authoritative != -1)
        {
            complete_set_authoritative(path.at(i).c_str(),
                                       PATH,
                                       authoritative);
        }

    }
}

void function_prepare_environment(const wcstring &name, const wchar_t *const *argv,
                                  const std::map<wcstring, env_var_t> &inherited_vars) {
    // Three components of the environment:
    // 1. argv
    // 2. named arguments
    // 3. inherited variables
    env_set_argv(argv);

    const wcstring_list_t named_arguments = function_get_named_arguments(name);
    if (!named_arguments.empty()) {
        const wchar_t *const *arg;
        size_t i;
        for (i = 0, arg = argv; i < named_arguments.size(); i++) {
            env_set(named_arguments.at(i).c_str(), *arg, ENV_LOCAL | ENV_USER);

            if (*arg) arg++;
        }
    }

    for (std::map<wcstring, env_var_t>::const_iterator it = inherited_vars.begin(),
                                                       end = inherited_vars.end();
         it != end; ++it) {
        env_set(it->first, it->second.missing() ? NULL : it->second.c_str(), ENV_LOCAL | ENV_USER);
    }
}

static void print_colors(io_streams_t &streams) {
    const wcstring_list_t result = rgb_color_t::named_color_names();
    size_t i;
    for (i = 0; i < result.size(); i++) {
        streams.out.append(result.at(i));
        streams.out.push_back(L'\n');
    }
}

/// Print terminfo key binding names to string buffer used for standard output.
///
/// \param all if set, all terminfo key binding names will be printed. If not set, only ones that
/// are defined for this terminal are printed.
void builtin_bind_t::key_names(bool all, io_streams_t &streams) {
    const wcstring_list_t names = input_terminfo_get_names(!all);
    for (size_t i = 0; i < names.size(); i++) {
        const wcstring &name = names.at(i);

        streams.out.append_format(L"%ls\n", name.c_str());
    }
}

static void print_colors(void)
{
    const wcstring_list_t result = rgb_color_t::named_color_names();
    size_t i;
    for (i=0; i < result.size(); i++)
    {
        stdout_buffer.append(result.at(i));
        stdout_buffer.push_back(L'\n');
    }
}

/**
   Merge multiple completions with the same description to the same line
*/
static void join_completions( wcstring_list_t lst )
{
    std::map<wcstring, long> desc_table;

	for( size_t i=0; i<lst.size(); i++ )
	{
		const wchar_t *item = lst.at(i).c_str();
		const wchar_t *desc = wcschr( item, COMPLETE_SEP );
		long prev_idx;
		
		if( !desc )
			continue;
		desc++;
        prev_idx = desc_table[desc] - 1;
		if( prev_idx == -1 )
		{
            desc_table[desc] = (long)(i+1);
		}
		else
		{
			const wchar_t *old = lst.at(i).c_str();
			const wchar_t *old_end = wcschr( old, COMPLETE_SEP );
			
			if( old_end )
			{
				
                wcstring foo;
                foo.append(old, old_end - old);
                foo.push_back(COMPLETE_ITEM_SEP);
                foo.append(item);
                
                lst.at(prev_idx) = foo;
                lst.at(i).clear();
			}
			
		}
		
	}	

    /* Remove empty strings */
    lst.erase(remove(lst.begin(), lst.end(), wcstring()), lst.end());
}

static bool run_test_test(int expected, wcstring_list_t &lst) {
    parser_t parser(PARSER_TYPE_GENERAL, true);
    size_t i, count = lst.size();
    wchar_t **argv = new wchar_t *[count+2];
    argv[0] = (wchar_t *)L"test";
    for (i=0; i < count; i++) {
        argv[i+1] = (wchar_t *)lst.at(i).c_str();
    }
    argv[i+1] = NULL;
    int result = builtin_test(parser, argv);
    delete[] argv;
    return expected == result;
}

/**
   Silly function
*/
static void builtin_complete_remove3(const wchar_t *cmd,
                                     int cmd_type,
                                     wchar_t short_opt,
                                     const wcstring_list_t &long_opt)
{
    for (size_t i=0; i<long_opt.size(); i++)
    {
        complete_remove(cmd,
                        cmd_type,
                        short_opt,
                        long_opt.at(i).c_str());
    }
}

void history_tests_t::test_history_races_pound_on_history()
{
    /* Called in child process to modify history */
    history_t *hist = new history_t(L"race_test");
    hist->chaos_mode = true;
    const wcstring_list_t lines = generate_history_lines(getpid());
    for (size_t idx = 0; idx < lines.size(); idx++)
    {
        const wcstring &line = lines.at(idx);
        hist->add(line);
        hist->save();
    }
    delete hist;
}

/**
   Replace completion strings with a comp_t structure
*/
static std::vector<comp_t *> mangle_completions( wcstring_list_t &lst, const wchar_t *prefix )
{
    std::vector<comp_t *> result;
	for( size_t i=0; i<lst.size(); i++ )
	{
        wcstring &next = lst.at(i);
		size_t start, end;
        
        comp_t zerod = {};
		comp_t *comp = new comp_t(zerod);
		
		for( start=end=0; 1; end++ )
		{
			wchar_t c = next.c_str()[end];
			
			if( (c == COMPLETE_ITEM_SEP) || (c==COMPLETE_SEP) || !c)
			{
                wcstring start2 = wcstring(next, start, end - start);
                wcstring str = escape_string(start2, ESCAPE_ALL | ESCAPE_NO_QUOTED);
				comp->comp_width += my_wcswidth( str.c_str() );
				comp->comp.push_back(str);
				start = end+1;
			}

			if( c == COMPLETE_SEP )
			{
				comp->desc = next.c_str() + start;
				break;
			}	
			
			if( !c )
				break;
			
		}

		comp->comp_width  += (int)(my_wcswidth(prefix)*comp->comp.size() + 2*(comp->comp.size()-1));
		comp->desc_width = comp->desc.empty()?0:my_wcswidth( comp->desc.c_str() );
		
		comp->pref_width = comp->comp_width + comp->desc_width + (comp->desc_width?4:0);
		
        result.push_back(comp);
	}
	
	recalc_width( result, prefix );
    return result;
}

void parse_util_set_argv( const wchar_t * const *argv, const wcstring_list_t &named_arguments )
{
	if( *argv )
	{
		const wchar_t * const *arg;
		wcstring sb;
		
		for( arg=argv; *arg; arg++ )
		{
			if( arg != argv )
			{
				sb.append(ARRAY_SEP_STR);
			}
            sb.append(*arg);
		}
			
		env_set( L"argv", sb.c_str(), ENV_LOCAL );
	}
	else
	{
		env_set( L"argv", 0, ENV_LOCAL );
	}				

	if( named_arguments.size() )
	{
		const wchar_t * const *arg;
		size_t i;
		
		for( i=0, arg=argv; i < named_arguments.size(); i++ )
		{
			env_set( named_arguments.at(i).c_str(), *arg, ENV_LOCAL );

			if( *arg )
				arg++;
		}
			
		
	}
	
}

/**
   Substitute any series of whitespace with a single space character
   inside completion descriptions. Remove all whitespace from
   beginning/end of completion descriptions.
*/
static void mangle_descriptions( wcstring_list_t &lst )
{
	int skip;
	for( size_t i=0; i<lst.size(); i++ )
	{
        wcstring &next = lst.at(i);
		size_t in, out;
		skip=1;
		
        size_t next_idx = 0;
		while( next_idx < next.size() && next[next_idx] != COMPLETE_SEP )
			next_idx++;
		
		if( next_idx == next.size() )
			continue;
		
		in=out=next_idx + 1;
		
		while( in < next.size() )
		{
			if( next[in] == L' ' || next[in]==L'\t' || next[in]<32 )
			{
				if( !skip )
					next[out++]=L' ';
				skip=1;					
			}
			else
			{
				next[out++] = next[in];					
				skip=0;
			}
			in++;
		}
        next.resize(out);
	}
}