4coder/4coder_project_commands.cpp

/*
4coder_project_commands.cpp - commands for loading and using a project.
*/

// TOP

static Project current_project = {};
static Arena current_project_arena = {};

///////////////////////////////

static Project_File_Pattern_Array
get_pattern_array_from_string_array(Arena *arena, String_Const_u8_Array list){
    Project_File_Pattern_Array array = {};
    array.count = list.count;
    array.patterns = push_array(arena, Project_File_Pattern, list.count);
    for (i32 i = 0; i < list.count; ++i){
        String_Const_u8 str = push_u8_stringf(arena, "*.%.*s", string_expand(list.strings[i]));
        array.patterns[i].absolutes = string_split_wildcards(arena, str);
    }
    return(array);
}

///////////////////////////////

static void
close_all_files_with_extension(Application_Links *app, String_Const_u8_Array extension_array){
    Scratch_Block scratch(app);
    
    i32 buffers_to_close_max = Thousand(100);
    Buffer_ID *buffers_to_close = push_array(scratch, Buffer_ID, buffers_to_close_max);
    
    b32 do_repeat = false;
    do{
        i32 buffers_to_close_count = 0;
        do_repeat = false;
        
        for (Buffer_ID buffer = get_buffer_next(app, 0, AccessAll);
             buffer != 0;
             buffer = get_buffer_next(app, buffer, AccessAll)){
            b32 is_match = true;
            
            if (extension_array.count > 0){
                Temp_Memory name_temp = begin_temp(scratch);
                String_Const_u8 file_name = push_buffer_file_name(app, scratch, buffer);
                is_match = false;
                if (file_name.size > 0){
                    String_Const_u8 extension = string_file_extension(file_name);
                    for (i32 i = 0; i < extension_array.count; ++i){
                        if (string_match(extension, extension_array.strings[i])){
                            is_match = true;
                            break;
                        }
                    }
                }
                end_temp(name_temp);
            }
            
            if (is_match){
                if (buffers_to_close_count >= buffers_to_close_max){
                    do_repeat = true;
                    break;
                }
                buffers_to_close[buffers_to_close_count++] = buffer;
            }
        }
        
        for (i32 i = 0; i < buffers_to_close_count; ++i){
            buffer_kill(app, buffers_to_close[i], BufferKill_AlwaysKill);
        }
    }while(do_repeat);
}

static b32
match_in_pattern_array(String_Const_u8 string, Project_File_Pattern_Array array){
    b32 found_match = false;
    Project_File_Pattern *pattern = array.patterns;
    for (i32 i = 0; i < array.count; ++i, ++pattern){
        if (string_wildcard_match(pattern->absolutes, string, StringMatch_Exact)){
            found_match = true;
            break;
        }
    }
    return(found_match);
}

static void
open_all_files_in_directory_pattern_match__recursive(Application_Links *app,
                                                     String_Const_u8 path,
                                                     Project_File_Pattern_Array whitelist,
                                                     Project_File_Pattern_Array blacklist,
                                                     u32 flags){
    Scratch_Block scratch(app);
    File_List list = {};
    get_file_list(app, path, &list);
    
    File_Info *info = list.infos;
    for (u32 i = 0; i < list.count; ++i, ++info){
        String_Const_u8 file_name = SCu8(info->filename, info->filename_len);
        
        if (info->folder){
            if ((flags & OpenAllFilesFlag_Recursive) == 0){
                continue;
            }
            if (match_in_pattern_array(file_name, blacklist)){
                continue;
            }
            
            String_Const_u8 new_path = push_u8_stringf(scratch, "%.*s%.*s/",
                                                       string_expand(path),
                                                       string_expand(file_name));
            open_all_files_in_directory_pattern_match__recursive(app, new_path,
                                                                 whitelist, blacklist, flags);
        }
        else{
            if (!match_in_pattern_array(file_name, whitelist)){
                continue;
            }
            if (match_in_pattern_array(file_name, blacklist)){
                continue;
            }
            
            String_Const_u8 full_path = push_u8_stringf(scratch, "%.*s%.*s",
                                                        string_expand(path),
                                                        string_expand(file_name));
            create_buffer(app, full_path, 0);
        }
    }
    
    free_file_list(app, list);
}

static Project_File_Pattern_Array
get_standard_blacklist(Arena *arena){
    String_Const_u8 dot = string_u8_litexpr(".*");
    String_Const_u8_Array black_array = {};
    black_array.strings = &dot;
    black_array.count = 1;
    return(get_pattern_array_from_string_array(arena, black_array));
}

static void
open_all_files_in_directory_pattern_match(Application_Links *app,
                                          String_Const_u8 dir,
                                          Project_File_Pattern_Array whitelist,
                                          Project_File_Pattern_Array blacklist,
                                          u32 flags){
    Scratch_Block scratch(app);
    String_Const_u8 directory = dir;
    if (!character_is_slash(string_get_character(directory, directory.size - 1))){
        directory = push_u8_stringf(scratch, "%.*s/", string_expand(dir));
    }
    open_all_files_in_directory_pattern_match__recursive(app, directory, whitelist, blacklist, flags);
}

static void
open_all_files_in_directory_with_extension(Application_Links *app, String_Const_u8 dir, String_Const_u8_Array array, u32 flags){
    Scratch_Block scratch(app);
    Project_File_Pattern_Array whitelist = get_pattern_array_from_string_array(scratch, array);
    Project_File_Pattern_Array blacklist = get_standard_blacklist(scratch);
    open_all_files_in_directory_pattern_match(app, dir, whitelist, blacklist, flags);
}

static void
open_all_files_in_hot_with_extension(Application_Links *app, String_Const_u8_Array array, u32 flags){
    Scratch_Block scratch(app);
    String_Const_u8 hot = push_hot_directory(app, scratch);
    String_Const_u8 directory = hot;
    if (!character_is_slash(string_get_character(hot, hot.size - 1))){
        directory = push_u8_stringf(scratch, "%.*s/", string_expand(hot));
    }
    open_all_files_in_directory_with_extension(app, hot, array, flags);
}

///////////////////////////////

#if OS_WINDOWS
#define PlatformName "win"
#elif OS_LINUX
#define PlatformName "linux"
#elif OS_MAC
#define PlatformName "mac"
#else
# error no project configuration names for this platform
#endif

static Project*
parse_project__config_data__version_0(Arena *arena, String_Const_u8 file_dir, Config *parsed){
    Project *project = push_array_zero(arena, Project, 1);
    
    // Set new project directory
    {
        project->dir = string_copy(arena, file_dir);
        
        project->load_path_array.paths = push_array(arena, Project_File_Load_Path, 1);
        project->load_path_array.count = 1;
        
        project->load_path_array.paths[0].path = project->dir;
        project->load_path_array.paths[0].recursive = false;
        project->load_path_array.paths[0].relative = false;
        
        project->name = project->dir;
    }
    
    // Read the settings from project.4coder
    String_Const_u8 str = {};
    if (config_string_var(parsed, "extensions", 0, &str)){
        String_Const_u8_Array extension_list = parse_extension_line_to_extension_list(arena, str);
        project->pattern_array = get_pattern_array_from_string_array(arena, extension_list);
        project->blacklist_pattern_array = get_standard_blacklist(arena);
    }
    
    b32 open_recursively = false;
    if (config_bool_var(parsed, "open_recursively", 0, &open_recursively)){
        project->load_path_array.paths[0].recursive = open_recursively;
    }
    
    char fkey_command_name[] = "fkey_command_" PlatformName;
    
    project->command_array.commands = push_array(arena, Project_Command, 16);
    project->command_array.count = 16;
    
    Project_Command *command = project->command_array.commands;
    for (i32 j = 1; j <= 16; ++j, ++command){
        project->fkey_commands[j - 1] = j - 1;
        block_zero_struct(command);
        
        command->name = push_u8_stringf(arena, "%d", j);
        
        Config_Compound *compound = 0;
        if (config_compound_var(parsed, fkey_command_name, j, &compound)){
            String_Const_u8 cmd = {};
            if (config_compound_string_member(parsed, compound, "cmd", 0, &cmd)){
                command->cmd = string_copy(arena, cmd);
            }
            
            String_Const_u8 out = {};
            if (config_compound_string_member(parsed, compound, "out", 1, &out)){
                command->out = string_copy(arena, out);
            }
            
            b32 footer_panel = false;
            if (config_compound_bool_member(parsed, compound, "footer_panel", 2, &footer_panel)){
                command->footer_panel = footer_panel;
            }
            
            b32 save_dirty_files = false;
            if (config_compound_bool_member(parsed, compound, "save_dirty_files", 3, &save_dirty_files)){
                command->save_dirty_files = save_dirty_files;
            }
        }
    }
    
    project->loaded = true;
    return(project);
}

static void
parse_project__extract_pattern_array(Arena *arena, Config *parsed, char *root_variable_name, Project_File_Pattern_Array *array_out){
    Config_Compound *compound = 0;
    if (config_compound_var(parsed, root_variable_name, 0, &compound)){
        Config_Get_Result_List list = typed_string_array_reference_list(arena, parsed, compound);
        
        array_out->patterns = push_array(arena, Project_File_Pattern, list.count);
        array_out->count = list.count;
        
        i32 i = 0;
        for (Config_Get_Result_Node *node = list.first;
             node != 0;
             node = node->next, i += 1){
            String_Const_u8 str = string_copy(arena, node->result.string);
            array_out->patterns[i].absolutes = string_split_wildcards(arena, str);
        }
    }
}

static Project_OS_Match_Level
parse_project__version_1__os_match(String_Const_u8 str, String_Const_u8 this_os_str){
    if (string_match(str, this_os_str)){
        return(ProjectOSMatchLevel_ActiveMatch);
    }
    else if (string_match(str, string_u8_litexpr("all"))){
        return(ProjectOSMatchLevel_ActiveMatch);
    }
    else if (string_match(str, string_u8_litexpr("default"))){
        return(ProjectOSMatchLevel_PassiveMatch);
    }
    return(ProjectOSMatchLevel_NoMatch);
}

static Project*
parse_project__config_data__version_1(Arena *arena, String_Const_u8 root_dir, Config *parsed){
    Project *project = push_array_zero(arena, Project, 1);
    
    // Set new project directory
    project->dir = string_copy(arena, root_dir);
    
    // project_name
    {
        String_Const_u8 str = {};
        if (config_string_var(parsed, "project_name", 0, &str)){
            project->name = string_copy(arena, str);
        }
        else{
            project->name = SCu8("");
        }
    }
    
    // patterns
    parse_project__extract_pattern_array(arena, parsed, "patterns", &project->pattern_array);
    
    // blacklist_patterns
    parse_project__extract_pattern_array(arena, parsed, "blacklist_patterns", &project->blacklist_pattern_array);
    
    // load_paths
    {
        Config_Compound *compound = 0;
        if (config_compound_var(parsed, "load_paths", 0, &compound)){
            b32 found_match = false;
            Config_Compound *best_paths = 0;
            
            for (i32 i = 0;; ++i){
                Config_Iteration_Step_Result result = typed_array_iteration_step(parsed, compound, ConfigRValueType_Compound, i);
                if (result.step == Iteration_Skip){
                    continue;
                }
                else if (result.step == Iteration_Quit){
                    break;
                }
                Config_Compound *paths_option = result.get.compound;
                
                Config_Compound *paths = 0;
                if (config_compound_compound_member(parsed, paths_option, "paths", 0, &paths)){
                    String_Const_u8 str = {};
                    if (config_compound_string_member(parsed, paths_option, "os", 1, &str)){
                        Project_OS_Match_Level r = parse_project__version_1__os_match(str, string_u8_litexpr(PlatformName));
                        if (r == ProjectOSMatchLevel_ActiveMatch){
                            found_match = true;
                            best_paths = paths;
                            break;
                        }
                        else if (r == ProjectOSMatchLevel_PassiveMatch){
                            if (!found_match){
                                found_match = true;
                                best_paths = paths;
                            }
                        }
                    }
                }
            }
            
            if (found_match){
                Config_Get_Result_List list = typed_compound_array_reference_list(arena, parsed, best_paths);
                
                project->load_path_array.paths = push_array(arena, Project_File_Load_Path, list.count);
                project->load_path_array.count = list.count;
                
                Project_File_Load_Path *dst = project->load_path_array.paths;
                for (Config_Get_Result_Node *node = list.first;
                     node != 0;
                     node = node->next, ++dst){
                    Config_Compound *src = node->result.compound;
                    memset(dst, 0, sizeof(*dst));
                    dst->recursive = true;
                    dst->relative = true;
                    
                    String_Const_u8 str = {};
                    if (config_compound_string_member(parsed, src, "path", 0, &str)){
                        dst->path = string_copy(arena, str);
                    }
                    
                    config_compound_bool_member(parsed, src, "recursive", 1, &dst->recursive);
                    config_compound_bool_member(parsed, src, "relative", 2, &dst->relative);
                }
            }
        }
    }
    
    // command_list
    {
        Config_Compound *compound = 0;
        if (config_compound_var(parsed, "command_list", 0, &compound)){
            Config_Get_Result_List list = typed_compound_array_reference_list(arena, parsed, compound);
            
            project->command_array.commands = push_array(arena, Project_Command, list.count);
            project->command_array.count = list.count;
            
            Project_Command *dst = project->command_array.commands;
            for (Config_Get_Result_Node *node = list.first;
                 node != 0;
                 node = node->next, ++dst){
                u8 *pos = node->result.pos;
                Config_Compound *src = node->result.compound;
                block_zero_struct(dst);
                
                b32 can_emit_command = true;
                
                Config_Get_Result cmd_result = {};
                Config_Compound *cmd_set = 0;
                u8 *cmd_pos = 0;
                String_Const_u8 cmd_str = {};
                String_Const_u8 out = {};
                b32 footer_panel = false;
                b32 save_dirty_files = true;
                b32 cursor_at_end = false;
                String_Const_u8 name = {};
                
                if (!config_compound_string_member(parsed, src, "name", 0, &name)){
                    can_emit_command = false;
                    config_add_error(arena, parsed, pos, "a command must have a string type name member");
                    goto finish_command;
                }
                
                cmd_result = config_compound_member(parsed, src,
                                                    string_u8_litexpr("cmd"), 1);
                if (cmd_result.success){
                    cmd_set = cmd_result.compound;
                    cmd_pos = cmd_result.pos;
                }
                else{
                    can_emit_command = false;
                    config_add_error(arena, parsed, pos, "a command must have an array type cmd member");
                    goto finish_command;
                }
                
                can_emit_command = false;
                for (i32 j = 0;; ++j){
                    Config_Iteration_Step_Result result = typed_array_iteration_step(parsed, cmd_set, ConfigRValueType_Compound, j);
                    if (result.step == Iteration_Skip){
                        continue;
                    }
                    else if (result.step == Iteration_Quit){
                        break;
                    }
                    Config_Compound *cmd_option = result.get.compound;
                    
                    String_Const_u8 cmd = {};
                    if (config_compound_string_member(parsed, cmd_option, "cmd", 0, &cmd)){
                        String_Const_u8 str = {};
                        if (config_compound_string_member(parsed, cmd_option, "os", 1, &str)){
                            Project_OS_Match_Level r = parse_project__version_1__os_match(str, string_u8_litexpr(PlatformName));
                            if (r == ProjectOSMatchLevel_ActiveMatch){
                                can_emit_command = true;
                                cmd_str = cmd;
                                break;
                            }
                            else if (r == ProjectOSMatchLevel_PassiveMatch){
                                if (!can_emit_command){
                                    can_emit_command = true;
                                    cmd_str = cmd;
                                }
                            }
                        }
                    }
                }
                
                if (!can_emit_command){
                    config_add_error(arena, parsed, cmd_pos, "no usable command strings found in cmd");
                    goto finish_command;
                }
                
                config_compound_string_member(parsed, src, "out", 2, &out);
                config_compound_bool_member(parsed, src, "footer_panel", 3, &footer_panel);
                config_compound_bool_member(parsed, src, "save_dirty_files", 4,
                                            &save_dirty_files);
                config_compound_bool_member(parsed, src, "cursor_at_end", 5,
                                            &cursor_at_end);
                
                dst->name = string_copy(arena, name);
                dst->cmd = string_copy(arena, cmd_str);
                dst->out = string_copy(arena, out);
                dst->footer_panel = footer_panel;
                dst->save_dirty_files = save_dirty_files;
                dst->cursor_at_end = cursor_at_end;
                
                finish_command:;
            }
        }
    }
    
    // fkey_command
    {
        for (i32 i = 1; i <= 16; ++i){
            String_Const_u8 name = {};
            i32 index = -1;
            if (config_string_var(parsed, "fkey_command", i, &name)){
                i32 count = project->command_array.count;
                Project_Command *command_ptr = project->command_array.commands;
                for (i32 j = 0; j < count; ++j, ++command_ptr){
                    if (string_match(command_ptr->name, name)){
                        index = j;
                        break;
                    }
                }
            }
            project->fkey_commands[i - 1] = index;
        }
    }
    
    project->loaded = true;
    return(project);
}

static Project*
parse_project__config_data(Arena *arena, String_Const_u8 file_dir, Config *parsed){
    i32 version = 0;
    if (parsed->version != 0){
        version = *parsed->version;
    }
    
    switch (version){
        case 0:
        {
            return(parse_project__config_data__version_0(arena, file_dir, parsed));
        }break;
        
        case 1:
        {
            return(parse_project__config_data__version_1(arena, file_dir, parsed));
        }break;
        
        default:
        {
            return(0);
        }break;
    }
}

static Project_Parse_Result
parse_project__data(Arena *arena, String_Const_u8 file_name, Data raw_data, String_Const_u8 file_dir){
    String_Const_u8 data = SCu8(raw_data);
    Project_Parse_Result result = {};
    Cpp_Token_Array array = text_data_to_token_array(arena, data);
    if (array.tokens != 0){
        result.parsed = text_data_and_token_array_to_parse_data(arena, file_name, data, array);
        if (result.parsed != 0){
            result.project = parse_project__config_data(arena, file_dir, result.parsed);
        }
    }
    return(result);
}

static Project_Parse_Result
parse_project__nearest_file(Application_Links *app, Arena *arena){
    Project_Parse_Result result = {};
    
    Temp_Memory restore_point = begin_temp(arena);
    String_Const_u8 project_path = {};
    get_hot_directory(app, arena, &project_path);
    if (project_path.size == 0){
        print_message(app, string_u8_litexpr("The hot directory is empty, cannot search for a project.\n"));
    }
    else{
        File_Name_Data dump = dump_file_search_up_path(app, arena, project_path, string_u8_litexpr("project.4coder"));
        if (dump.data.data != 0){
            String_Const_u8 project_root = string_remove_last_folder(dump.file_name);
            result = parse_project__data(arena, dump.file_name, dump.data, project_root);
        }
        else{
            List_String_Const_u8 list = {};
            string_list_push(arena, &list, string_u8_litexpr("Did not find project.4coder.  "));
            if (current_project.loaded){
                string_list_push(arena, &list, string_u8_litexpr("Continuing with: "));
                if (current_project.name.size > 0){
                    string_list_push(arena, &list, current_project.name);
                }
                else{
                    string_list_push(arena, &list, current_project.dir);
                }
            }
            else{
                string_list_push(arena, &list, string_u8_litexpr("Continuing without a project."));
            }
            string_list_push(arena, &list, string_u8_litexpr("\n"));
            String_Const_u8 message = string_list_flatten(arena, list);
            print_message(app, message);
            end_temp(restore_point);
        }
    }
    
    return(result);
}

static void
project_deep_copy__pattern_array(Arena *arena, Project_File_Pattern_Array *src_array, Project_File_Pattern_Array *dst_array){
    i32 pattern_count = src_array->count;
    dst_array->patterns = push_array(arena, Project_File_Pattern, pattern_count);
    dst_array->count = pattern_count;
    Project_File_Pattern *dst = dst_array->patterns;
    Project_File_Pattern *src = src_array->patterns;
    for (i32 i = 0; i < pattern_count; ++i, ++dst, ++src){
        for (Node_String_Const_u8 *node = src->absolutes.first;
             node != 0;
             node = node->next){
            string_list_push(arena, &dst->absolutes, node->string);
        }
    }
}

static Project
project_deep_copy__inner(Arena *arena, Project *project){
    Project result = {};
    result.dir = string_copy(arena, project->dir);
    result.name = string_copy(arena, project->name);
    project_deep_copy__pattern_array(arena, &project->pattern_array, &result.pattern_array);
    project_deep_copy__pattern_array(arena, &project->blacklist_pattern_array, &result.blacklist_pattern_array);
    
    {
        i32 path_count = project->load_path_array.count;
        result.load_path_array.paths = push_array(arena, Project_File_Load_Path, path_count);
        result.load_path_array.count = path_count;
        
        Project_File_Load_Path *dst = result.load_path_array.paths;
        Project_File_Load_Path *src = project->load_path_array.paths;
        for (i32 i = 0; i < path_count; ++i, ++dst, ++src){
            dst->path = string_copy(arena, src->path);
            dst->recursive = src->recursive;
            dst->relative = src->relative;
        }
    }
    
    {
        i32 command_count = project->command_array.count;
        result.command_array.commands = push_array_zero(arena, Project_Command, command_count);
        result.command_array.count = command_count;
        
        Project_Command *dst = result.command_array.commands;
        Project_Command *src = project->command_array.commands;
        for (i32 i = 0; i < command_count; ++i, ++dst, ++src){
            if (src->name.str != 0){
                dst->name = string_copy(arena, src->name);
            }
            if (src->cmd.str != 0){
                dst->cmd = string_copy(arena, src->cmd);
            }
            if (src->out.str != 0){
                dst->out = string_copy(arena, src->out);
            }
            dst->footer_panel = src->footer_panel;
            dst->save_dirty_files = src->save_dirty_files;
            dst->cursor_at_end = src->cursor_at_end;
        }
    }
    
    memcpy(result.fkey_commands, project->fkey_commands, sizeof(result.fkey_commands));
    
    result.loaded = true;
    return(result);
}

static Project
project_deep_copy(Arena *arena, Project *project){
    Temp_Memory restore_point = begin_temp(arena);
    Project result = project_deep_copy__inner(arena, project);
    if (!result.loaded){
        end_temp(restore_point);
        block_zero_struct(&result);
    }
    return(result);
}

static void
config_feedback_file_pattern_array(Arena *arena, List_String_Const_u8 *list, char *name, Project_File_Pattern_Array *array){
    string_list_pushf(arena, list, "%s = {\n", name);
    Project_File_Pattern *pattern = array->patterns;
    for (i32 i = 0; i < array->count; ++i, ++pattern){
        string_list_push_u8_lit(arena, list, "\"");
        b32 is_first = true;
        for (Node_String_Const_u8 *node = pattern->absolutes.first;
             node != 0;
             node = node->next){
            if (is_first){
                string_list_push(arena, list, node->string);
                is_first = false;
            }
            else{
                string_list_pushf(arena, list, "*%.*s", string_expand(node->string));
            }
        }
        string_list_push_u8_lit(arena, list, "\",\n");
    }
    string_list_push_u8_lit(arena, list, "};\n");
}

static void
config_feedback_file_load_path_array(Arena *arena, List_String_Const_u8 *list, char *name, Project_File_Load_Path_Array *array){
    string_list_pushf(arena, list, "%s = {\n", name);
    Project_File_Load_Path *path = array->paths;
    for (i32 i = 0; i < array->count; ++i, ++path){
        string_list_pushf(arena, list, "{ .path = \"%.*s\", .recursive = %s, .relative = %s, },\n",
                          string_expand(path->path), (char*)(path->recursive?"true":"false"), (char*)(path->relative?"true":"false"));
    }
    string_list_push_u8_lit(arena, list, "};\n");
}

static void
config_feedback_command_array(Arena *arena, List_String_Const_u8 *list, char *name, Project_Command_Array *array){
    string_list_pushf(arena, list, "%s = {\n", name);
    Project_Command *command = array->commands;
    for (i32 i = 0; i < array->count; ++i, ++command){
        string_list_pushf(arena, list,
                          "{ .name = \"%.*s\", .cmd = \"%.*s\", .out = \"%.*s\", "
                          ".footer_panel = %s, .save_dirty_files = %s, .cursor_at_end = %s, },\n",
                          string_expand(command->name), string_expand(command->cmd), string_expand(command->out),
                          (char*)(command->footer_panel?"true":"false"),
                          (char*)(command->save_dirty_files?"true":"false"),
                          (char*)(command->cursor_at_end?"true":"false"));
    }
    string_list_push_u8_lit(arena, list, "};\n");
}

static void
set_current_project(Application_Links *app, Project *project, Config *parsed){
    b32 print_feedback = false;
    Scratch_Block scratch(app);
    
    if (parsed != 0 && project != 0){
        if (current_project_arena.base_allocator == 0){
            current_project_arena = make_arena_app_links(app, KB(64));
        }
        
        // Copy project to current_project
        linalloc_clear(&current_project_arena);
        Project new_project = project_deep_copy(&current_project_arena, project);
        if (new_project.loaded){
            current_project = new_project;
            
            print_feedback = true;
            
            // Open all project files
            for (i32 i = 0; i < current_project.load_path_array.count; ++i){
                Project_File_Load_Path *load_path = &current_project.load_path_array.paths[i];
                u32 flags = 0;
                if (load_path->recursive){
                    flags |= OpenAllFilesFlag_Recursive;
                }
                
                Temp_Memory temp = begin_temp(scratch);
                String_Const_u8 path_str = load_path->path;
                String_Const_u8 file_dir = path_str;
                if (load_path->relative){
                    String_Const_u8 project_dir = current_project.dir;
                    List_String_Const_u8 file_dir_list = {};
                    string_list_push(scratch, &file_dir_list, project_dir);
                    string_list_push_overlap(scratch, &file_dir_list, '/', path_str);
                    string_list_push_overlap(scratch, &file_dir_list, '/', SCu8());
                    file_dir = string_list_flatten(scratch, file_dir_list, StringFill_NullTerminate);
                }
                
                Project_File_Pattern_Array whitelist = current_project.pattern_array;
                Project_File_Pattern_Array blacklist = current_project.blacklist_pattern_array;
                open_all_files_in_directory_pattern_match(app, file_dir, whitelist, blacklist, flags);
                end_temp(temp);
            }
            
            // Set window title
            if (project->name.size > 0){
                Temp_Memory temp = begin_temp(scratch);
                String_Const_u8 builder = push_u8_stringf(scratch, "4coder project: %.*s",
                                                          string_expand(project->name));
                set_window_title(app, builder);
                end_temp(temp);
            }
        }
        else{
#define M "Failed to initialize new project; need more memory dedicated to the project system.\n"
            print_message(app, string_u8_litexpr(M));
#undef M
        }
    }
    else if (parsed != 0){
        print_feedback = true;
    }
    
    if (print_feedback){
        Temp_Memory temp = begin_temp(scratch);
        
        // Top
        print_message(app, string_u8_litexpr("Loaded project file:\n"));
        
        // Errors
        String_Const_u8 error_text = config_stringize_errors(scratch, parsed);
        print_message(app, error_text);
        
        // Values
        if (project == 0){
            print_message(app, string_u8_litexpr("Could not instantiate project\n"));
        }
        else{
            Temp_Memory temp2 = begin_temp(scratch);
            List_String_Const_u8 list = {};
            
            config_feedback_string(scratch, &list, "'root_directory'", project->dir);
            config_feedback_string(scratch, &list, "project_name", project->name);
            
            config_feedback_file_pattern_array(scratch, &list, "patterns", &project->pattern_array);
            config_feedback_file_pattern_array(scratch, &list, "blacklist_patterns", &project->blacklist_pattern_array);
            config_feedback_file_load_path_array(scratch, &list, "load_paths", &project->load_path_array);
            config_feedback_command_array(scratch, &list, "command_list", &project->command_array);
            
            string_list_push_u8_lit(scratch, &list, "\n");
            
            String_Const_u8 message = string_list_flatten(scratch, list);
            print_message(app, message);
            end_temp(temp2);
        }
        
        end_temp(temp);
    }
}

static void
set_current_project_from_data(Application_Links *app, String_Const_u8 file_name, Data data, String_Const_u8 file_dir){
    Arena *scratch = context_get_arena(app);
    Temp_Memory temp = begin_temp(scratch);
    Project_Parse_Result project_parse = parse_project__data(scratch, file_name, data, file_dir);
    set_current_project(app, project_parse.project, project_parse.parsed);
    end_temp(temp);
}

static void
set_current_project_from_nearest_project_file(Application_Links *app){
    Arena *scratch = context_get_arena(app);
    Temp_Memory temp = begin_temp(scratch);
    Project_Parse_Result project_parse = parse_project__nearest_file(app, scratch);
    set_current_project(app, project_parse.project, project_parse.parsed);
    end_temp(temp);
}

static void
exec_project_command(Application_Links *app, Project_Command *command){
    if (command->cmd.size > 0){
        b32 footer_panel = command->footer_panel;
        b32 save_dirty_files = command->save_dirty_files;
        b32 cursor_at_end = command->cursor_at_end;
        
        if (save_dirty_files){
            save_all_dirty_buffers(app);
        }
        
        View_ID view = 0;
        Buffer_Identifier buffer_id = {};
        u32 flags = CLI_OverlapWithConflict|CLI_SendEndSignal;
        if (cursor_at_end){
            flags |= CLI_CursorAtEnd;
        }
        
        b32 set_fancy_font = false;
        if (command->out.size > 0){
            buffer_id = buffer_identifier(command->out);
            
            if (footer_panel){
                view = get_or_open_build_panel(app);
                if (string_match(command->out, string_u8_litexpr("*compilation*"))){
                    set_fancy_font = true;
                }
            }
            else{
                Buffer_ID buffer = buffer_identifier_to_id(app, buffer_id);
                view = get_first_view_with_buffer(app, buffer);
                if (view == 0){
                    view = get_active_view(app, AccessAll);
                }
            }
            
            block_zero_struct(&prev_location);
            lock_jump_buffer(command->out);
        }
        else{
            // TODO(allen): fix the exec_system_command call so it can take a null buffer_id.
            buffer_id = buffer_identifier(string_u8_litexpr("*dump*"));
        }
        
        String_Const_u8 dir = current_project.dir;
        String_Const_u8 cmd = command->cmd;
        exec_system_command(app, view, buffer_id, dir, cmd, flags);
        if (set_fancy_font){
            set_fancy_compilation_buffer_font(app);
        }
    }
}

static void
exec_project_command_by_index(Application_Links *app, i32 command_index){
    if (!current_project.loaded){
        return;
    }
    if (command_index < 0 || command_index >= current_project.command_array.count){
        return;
    }
    Project_Command *command = &current_project.command_array.commands[command_index];
    exec_project_command(app, command);
}

static void
exec_project_fkey_command(Application_Links *app, i32 fkey_index){
    if (!current_project.loaded){
        return;
    }
    i32 command_index = current_project.fkey_commands[fkey_index];
    if (command_index < 0 || command_index >= current_project.command_array.count){
        return;
    }
    Project_Command *command = &current_project.command_array.commands[command_index];
    exec_project_command(app, command);
}

static void
exec_project_command_by_name(Application_Links *app, String_Const_u8 name){
    if (!current_project.loaded){
        return;
    }
    Project_Command *command = current_project.command_array.commands;
    for (i32 i = 0; i < current_project.command_array.count; ++i, ++command){
        if (string_match(command->name, name)){
            exec_project_command(app, command);
            break;
        }
    }
}

static void
exec_project_command_by_name(Application_Links *app, char *name){
    exec_project_command_by_name(app, SCu8(name));
}

////////////////////////////////

CUSTOM_COMMAND_SIG(close_all_code)
CUSTOM_DOC("Closes any buffer with a filename ending with an extension configured to be recognized as a code file type.")
{
    close_all_files_with_extension(app, global_config.code_exts);
}

CUSTOM_COMMAND_SIG(open_all_code)
CUSTOM_DOC("Open all code in the current directory. File types are determined by extensions. An extension is considered code based on the extensions specified in 4coder.config.")
{
    open_all_files_in_hot_with_extension(app, global_config.code_exts, 0);
}

CUSTOM_COMMAND_SIG(open_all_code_recursive)
CUSTOM_DOC("Works as open_all_code but also runs in all subdirectories.")
{
    open_all_files_in_hot_with_extension(app, global_config.code_exts, OpenAllFilesFlag_Recursive);
}

///////////////////////////////

CUSTOM_COMMAND_SIG(load_project)
CUSTOM_DOC("Looks for a project.4coder file in the current directory and tries to load it.  Looks in parent directories until a project file is found or there are no more parents.")
{
    save_all_dirty_buffers(app);
    set_current_project_from_nearest_project_file(app);
}

CUSTOM_COMMAND_SIG(project_fkey_command)
CUSTOM_DOC("Run an 'fkey command' configured in a project.4coder file.  Determines the index of the 'fkey command' by which function key or numeric key was pressed to trigger the command.")
{
    User_Input input = get_command_input(app);
    b32 got_ind = false;
    i32 ind = 0;
    if (input.key.keycode >= key_f1 && input.key.keycode <= key_f16){
        ind = (input.key.keycode - key_f1);
        got_ind = true;
    }
    else if (input.key.character_no_caps_lock >= '1' && input.key.character_no_caps_lock >= '9'){
        ind = (input.key.character_no_caps_lock - '1');
        got_ind = true;
    }
    else if (input.key.character_no_caps_lock == '0'){
        ind = 9;
        got_ind = true;
    }
    if (got_ind){
        exec_project_fkey_command(app, ind);
    }
}

CUSTOM_COMMAND_SIG(project_go_to_root_directory)
CUSTOM_DOC("Changes 4coder's hot directory to the root directory of the currently loaded project. With no loaded project nothing hapepns.")
{
    if (current_project.loaded){
        set_hot_directory(app, current_project.dir);
    }
}

///////////////////////////////

static Project_Setup_Status
project_is_setup(Application_Links *app, String_Const_u8 script_path, String_Const_u8 script_file){
    Project_Setup_Status result = {};
    {
        Scratch_Block scratch(app);
        String_Const_u8 bat_path = push_u8_stringf(scratch, "%.*s/%.*s.bat",
                                                   string_expand(script_path),
                                                   string_expand(script_file));
        result.bat_exists = file_exists(app, bat_path);
    }
    {
        Scratch_Block scratch(app);
        String_Const_u8 sh_path = push_u8_stringf(scratch, "%.*s/%.*s.sh",
                                                  string_expand(script_path),
                                                  string_expand(script_file));
        result.sh_exists = file_exists(app, sh_path);
    }
    {
        Scratch_Block scratch(app);
        String_Const_u8 project_path = push_u8_stringf(scratch, "%.*s/project.4coder",
                                                       string_expand(script_path));
        result.sh_exists = file_exists(app, project_path);
    }
    result.everything_exists = (result.bat_exists && result.sh_exists && result.project_exists);
    return(result);
}

static Project_Key_Strings
project_key_strings_query_user(Application_Links *app,
                               b32 get_script_file, b32 get_code_file,
                               u8 *script_file_space, i32 script_file_cap,
                               u8 *code_file_space, i32 code_file_cap,
                               u8 *output_dir_space, i32 output_dir_cap,
                               u8 *binary_file_space, i32 binary_file_cap){
    Project_Key_Strings keys = {};
    
    Query_Bar script_file_bar = {};
    Query_Bar code_file_bar = {};
    Query_Bar output_dir_bar = {};
    Query_Bar binary_file_bar = {};
    
    if (get_script_file){
        script_file_bar.prompt = string_u8_litexpr("Script Name: ");
        script_file_bar.string = SCu8(script_file_space, (umem)0);
        script_file_bar.string_capacity = script_file_cap;
        if (!query_user_string(app, &script_file_bar)) return(keys);
        if (script_file_bar.string.size == 0) return(keys);
    }
    
    if (get_code_file){
        code_file_bar.prompt = string_u8_litexpr("Build Target: ");
        code_file_bar.string = SCu8(code_file_space, (umem)0);
        code_file_bar.string_capacity = code_file_cap;
        if (!query_user_string(app, &code_file_bar)) return(keys);
        if (code_file_bar.string.size == 0) return(keys);
    }
    
    output_dir_bar.prompt = string_u8_litexpr("Output Directory: ");
    output_dir_bar.string = SCu8(output_dir_space, (umem)0);
    output_dir_bar.string_capacity = output_dir_cap;
    if (!query_user_string(app, &output_dir_bar)) return(keys);
    if (output_dir_bar.string.size == 0 && output_dir_cap > 0){
        output_dir_bar.string.str[0] = '.';
        output_dir_bar.string.size = 1;
    }
    
    binary_file_bar.prompt = string_u8_litexpr("Binary Output: ");
    binary_file_bar.string = SCu8(binary_file_space, (umem)0);
    binary_file_bar.string_capacity = binary_file_cap;
    if (!query_user_string(app, &binary_file_bar)) return(keys);
    if (binary_file_bar.string.size == 0) return(keys);
    
    keys.success = true;
    keys.script_file = script_file_bar.string;
    keys.code_file = code_file_bar.string;
    keys.output_dir = output_dir_bar.string;
    keys.binary_file = binary_file_bar.string;
    
    return(keys);
}

static b32
project_generate_bat_script(Arena *scratch, String_Const_u8 opts, String_Const_u8 compiler,
                            String_Const_u8 script_path, String_Const_u8 script_file,
                            String_Const_u8 code_file, String_Const_u8 output_dir, String_Const_u8 binary_file){
    b32 success = false;
    
    Temp_Memory temp = begin_temp(scratch);
    
    String_Const_u8 cf = string_copy(scratch, code_file);
    String_Const_u8 od = string_copy(scratch, output_dir);
    String_Const_u8 bf = string_copy(scratch, binary_file);
    
    cf = string_mod_replace_character(cf, '/', '\\');
    od = string_mod_replace_character(od, '/', '\\');
    bf = string_mod_replace_character(bf, '/', '\\');
    
    String_Const_u8 file_name = push_u8_stringf(scratch, "%.*s/%.*s.bat",
                                                string_expand(script_path),
                                                string_expand(script_file));
    
    FILE *bat_script = fopen((char*)file_name.str, "wb");
    if (bat_script != 0){
        fprintf(bat_script, "@echo off\n\n");
        fprintf(bat_script, "set opts=%.*s\n", (i32)opts.size, opts.str);
        fprintf(bat_script, "set code=%%cd%%\n");
        fprintf(bat_script, "pushd %.*s\n", (i32)od.size, od.str);
        fprintf(bat_script, "%.*s %%opts%% %%code%%\\%.*s -Fe%.*s\n",
                (i32)compiler.size, compiler.str, (i32)cf.size, cf.str, (i32)bf.size, bf.str);
        fprintf(bat_script, "popd\n");
        fclose(bat_script);
        success = true;
    }
    
    end_temp(temp);
    
    return(success);
}

static b32
project_generate_sh_script(Arena *scratch, String_Const_u8 opts, String_Const_u8 compiler,
                           String_Const_u8 script_path, String_Const_u8 script_file,
                           String_Const_u8 code_file, String_Const_u8 output_dir, String_Const_u8 binary_file){
    b32 success = false;
    
    Temp_Memory temp = begin_temp(scratch);
    
    String_Const_u8 cf = code_file;
    String_Const_u8 od = output_dir;
    String_Const_u8 bf = binary_file;
    
    String_Const_u8 file_name = push_u8_stringf(scratch, "%.*s/%.*s.sh",
                                                string_expand(script_path),
                                                string_expand(script_file));
    
    FILE *sh_script = fopen((char*)file_name.str, "wb");
    if (sh_script != 0){
        fprintf(sh_script, "#!/bin/bash\n\n");
        fprintf(sh_script, "code=\"$PWD\"\n");
        fprintf(sh_script, "opts=%.*s\n", string_expand(opts));
        fprintf(sh_script, "cd %.*s > /dev/null\n", string_expand(od));
        fprintf(sh_script, "%.*s $opts $code/%.*s -o %.*s\n", string_expand(compiler), string_expand(cf), string_expand(bf));
        fprintf(sh_script, "cd $code > /dev/null\n");
        fclose(sh_script);
        success = true;
    }
    
    end_temp(temp);
    
    return(success);
}

static b32
project_generate_project_4coder_file(Arena *scratch, String_Const_u8 script_path, String_Const_u8 script_file, String_Const_u8 output_dir, String_Const_u8 binary_file){
    b32 success = false;
    
    Temp_Memory temp = begin_temp(scratch);
    
    String_Const_u8 od = output_dir;
    String_Const_u8 bf = binary_file;
    
    String_Const_u8 od_win = string_replace(scratch, od,
                                            string_u8_litexpr("/"), string_u8_litexpr("\\"));
    String_Const_u8 bf_win = string_replace(scratch, bf,
                                            string_u8_litexpr("/"), string_u8_litexpr("\\"));
    
    String_Const_u8 file_name = push_u8_stringf(scratch, "%.*s/project.4coder", string_expand(script_path));
    
    FILE *out = fopen((char*)file_name.str, "wb");
    if (out != 0){
        fprintf(out, "version(1);\n");
        fprintf(out, "project_name = \"%.*s\";\n", string_expand(binary_file));
        fprintf(out, "patterns = {\n");
        fprintf(out, "\"*.c\",\n");
        fprintf(out, "\"*.cpp\",\n");
        fprintf(out, "\"*.h\",\n");
        fprintf(out, "\"*.m\",\n");
        fprintf(out, "\"*.bat\",\n");
        fprintf(out, "\"*.sh\",\n");
        fprintf(out, "\"*.4coder\",\n");
        fprintf(out, "};\n");
        fprintf(out, "blacklist_patterns = {\n");
        fprintf(out, "\".*\",\n");
        fprintf(out, "};\n");
        fprintf(out, "load_paths_base = {\n");
        fprintf(out, " { \".\", .relative = true, .recursive = true, },\n");
        fprintf(out, "};\n");
        fprintf(out, "load_paths = {\n");
        fprintf(out, " { load_paths_base, .os = \"win\", },\n");
        fprintf(out, " { load_paths_base, .os = \"linux\", },\n");
        fprintf(out, " { load_paths_base, .os = \"mac\", },\n");
        fprintf(out, "};\n");
        
        fprintf(out, "\n");
        
        fprintf(out, "command_list = {\n");
        fprintf(out, " { .name = \"build\",\n");
        fprintf(out, "   .out = \"*compilation*\", .footer_panel = true, .save_dirty_files = true,\n");
        fprintf(out, "   .cmd = { { \"%.*s.bat\" , .os = \"win\"   },\n", string_expand(script_file));
        fprintf(out, "            { \"./%.*s.sh\", .os = \"linux\" },\n", string_expand(script_file));
        fprintf(out, "            { \"./%.*s.sh\", .os = \"mac\"   }, }, },\n", string_expand(script_file));
        fprintf(out, " { .name = \"run\",\n");
        fprintf(out, "   .out = \"*run*\", .footer_panel = false, .save_dirty_files = false,\n");
        fprintf(out, "   .cmd = { { \"%.*s\\\\%.*s\", .os = \"win\"   },\n", string_expand(od_win), string_expand(bf_win));
        fprintf(out, "            { \"%.*s/%.*s\" , .os = \"linux\" },\n", string_expand(od), string_expand(bf));
        fprintf(out, "            { \"%.*s/%.*s\" , .os = \"mac\"   }, }, },\n", string_expand(od), string_expand(bf));
        fprintf(out, "};\n");
        
        fprintf(out, "fkey_command[1] = \"build\";\n");
        fprintf(out, "fkey_command[2] = \"run\";\n");
        
        fclose(out);
        success = true;
    }
    
    end_temp(temp);
    
    return(success);
}

static void
project_setup_scripts__generic(Application_Links *app, b32 do_project_file, b32 do_bat_script, b32 do_sh_script){
    Arena *scratch = context_get_arena(app);
    Temp_Memory temp = begin_temp(scratch);
    String_Const_u8 script_path = push_hot_directory(app, scratch);
    
    b32 needs_to_do_work = false;
    Project_Setup_Status status = {};
    if (do_project_file){
        status = project_is_setup(app, script_path, string_u8_litexpr("build"));
        needs_to_do_work =
            !status.project_exists ||
            (do_bat_script && !status.bat_exists) ||
            (do_sh_script && !status.sh_exists);
    }
    else{
        needs_to_do_work = true;
    }
    
    if (needs_to_do_work){
        // Query the User for Key File Names
        u8 script_file_space[1024];
        u8 code_file_space  [1024];
        u8 output_dir_space [1024];
        u8 binary_file_space[1024];
        
        b32 get_script_file = !do_project_file;
        b32 get_code_file =
            (do_bat_script && !status.bat_exists) ||
            (do_sh_script && !status.sh_exists);
        
        Project_Key_Strings keys = {};
        keys = project_key_strings_query_user(app, get_script_file, get_code_file,
                                              script_file_space, sizeof(script_file_space),
                                              code_file_space, sizeof(code_file_space),
                                              output_dir_space, sizeof(output_dir_space),
                                              binary_file_space, sizeof(binary_file_space));
        
        if (!keys.success){
            return;
        }
        
        if (do_project_file){
            keys.script_file = string_u8_litexpr("build");
        }
        
        if (!do_project_file){
            status = project_is_setup(app, script_path, keys.script_file);
        }
        
        // Generate Scripts
        if (do_bat_script){
            if (!status.bat_exists){
                if (!project_generate_bat_script(scratch,
                                                 global_config.default_flags_bat,
                                                 global_config.default_compiler_bat,
                                                 script_path, keys.script_file,
                                                 keys.code_file, keys.output_dir, keys.binary_file)){
                    print_message(app, string_u8_litexpr("could not create build.bat for new project\n"));
                }
            }
            else{
                print_message(app, string_u8_litexpr("the batch script already exists, no changes made to it\n"));
            }
        }
        
        if (do_sh_script){
            if (!status.bat_exists){
                if (!project_generate_sh_script(scratch,
                                                global_config.default_flags_sh,
                                                global_config.default_compiler_sh,
                                                script_path, keys.script_file,
                                                keys.code_file, keys.output_dir, keys.binary_file)){
                    print_message(app, string_u8_litexpr("could not create build.sh for new project\n"));
                }
            }
            else{
                print_message(app, string_u8_litexpr("the shell script already exists, no changes made to it\n"));
            }
        }
        
        if (do_project_file){
            if (!status.project_exists){
                if (!project_generate_project_4coder_file(scratch,
                                                          script_path,
                                                          keys.script_file,
                                                          keys.output_dir,
                                                          keys.binary_file)){
                    print_message(app, string_u8_litexpr("could not create project.4coder for new project\n"));
                }
            }
            else{
                print_message(app, string_u8_litexpr("project.4coder already exists, no changes made to it\n"));
            }
        }
    }
    else{
        if (do_project_file){
            print_message(app, string_u8_litexpr("project already setup, no changes made\n"));
        }
    }
    
    end_temp(temp);
}

CUSTOM_COMMAND_SIG(setup_new_project)
CUSTOM_DOC("Queries the user for several configuration options and initializes a new 4coder project with build scripts for every OS.")
{
    project_setup_scripts__generic(app, true, true, true);
    load_project(app);
}

CUSTOM_COMMAND_SIG(setup_build_bat)
CUSTOM_DOC("Queries the user for several configuration options and initializes a new build batch script.")
{
    project_setup_scripts__generic(app, false, true, false);
}

CUSTOM_COMMAND_SIG(setup_build_sh)
CUSTOM_DOC("Queries the user for several configuration options and initializes a new build shell script.")
{
    project_setup_scripts__generic(app, false, false, true);
}

CUSTOM_COMMAND_SIG(setup_build_bat_and_sh)
CUSTOM_DOC("Queries the user for several configuration options and initializes a new build batch script.")
{
    project_setup_scripts__generic(app, false, true, true);
}

///////////////////////////////

static void
activate_project_command(Application_Links *app, Heap *heap, View_ID view, Lister_State *state, String_Const_u8 text_field, void *user_data, b32 activated_by_mouse){
    i32 command_index = (i32)PtrAsInt(user_data);
    exec_project_command_by_index(app, command_index);
    lister_default(app, heap, view, state, ListerActivation_Finished);
}

CUSTOM_COMMAND_SIG(project_command_lister)
CUSTOM_DOC("Open a lister of all commands in the currently loaded project.")
{
    if (current_project.loaded){
        Arena *scratch = context_get_arena(app);
        
        View_ID view = get_active_view(app, AccessAll);
        view_end_ui_mode(app, view);
        Temp_Memory temp = begin_temp(scratch);
        i32 option_count = current_project.command_array.count;
        Lister_Option *options = push_array(scratch, Lister_Option, option_count);
        for (i32 i = 0;
             i < current_project.command_array.count;
             i += 1){
            options[i].string = string_copy(scratch, current_project.command_array.commands[i].name);
            options[i].status = string_copy(scratch, current_project.command_array.commands[i].cmd);
            options[i].user_data = IntAsPtr(i);
        }
        begin_integrated_lister__basic_list(app, "Command:", activate_project_command, 0, 0, options, option_count, 0, view);
        end_temp(temp);
    }
}

// BOTTOM