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4coder/4ed_file.cpp

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/*
* Mr. 4th Dimention - Allen Webster
*
* 20.02.2016
*
* File editing view for 4coder
*
*/
// TOP
#include "buffer/4coder_shared.cpp"
#if BUFFER_EXPERIMENT_SCALPEL == 0
#include "buffer/4coder_golden_array.cpp"
#define Buffer_Type Buffer
#elif BUFFER_EXPERIMENT_SCALPEL == 1
#include "buffer/4coder_gap_buffer.cpp"
#define Buffer_Type Gap_Buffer
#elif BUFFER_EXPERIMENT_SCALPEL == 2
#include "buffer/4coder_multi_gap_buffer.cpp"
#define Buffer_Type Multi_Gap_Buffer
#else
#include "buffer/4coder_rope_buffer.cpp"
#define Buffer_Type Rope_Buffer
#endif
#include "buffer/4coder_buffer_abstract.cpp"
enum Edit_Type{
ED_NORMAL,
ED_REVERSE_NORMAL,
ED_UNDO,
ED_REDO,
};
struct Edit_Step{
Edit_Type type;
union{
struct{
b32 can_merge;
Buffer_Edit edit;
i32 pre_pos;
i32 post_pos;
i32 next_block, prev_block;
};
struct{
i32 first_child;
i32 inverse_first_child;
i32 inverse_child_count;
i32 special_type;
};
};
i32 child_count;
};
struct Edit_Stack{
u8 *strings;
i32 size, max;
Edit_Step *edits;
i32 edit_count, edit_max;
};
struct Small_Edit_Stack{
u8 *strings;
i32 size, max;
Buffer_Edit *edits;
i32 edit_count, edit_max;
};
struct Undo_Data{
Edit_Stack undo;
Edit_Stack redo;
Edit_Stack history;
Small_Edit_Stack children;
i32 history_block_count, history_head_block;
i32 edit_history_cursor;
b32 current_block_normal;
};
enum File_Sync_State{
SYNC_GOOD,
SYNC_BEHIND_OS,
SYNC_UNSAVED
};
struct Text_Effect{
i32 start, end;
u32 color;
i32 tick_down, tick_max;
};
// NOTE(allen): The Editing_File struct is now divided into two
// parts. Variables in the Settings part can be set even when the
// file is still streaming in, and all operations except for the
// initial allocation of the file.
struct Editing_File_Settings{
i32 base_map_id;
i32 dos_write_mode;
b32 unwrapped_lines;
b8 tokens_exist;
b8 is_initialized;
b8 unimportant;
b8 read_only;
b8 never_kill;
};
// NOTE(allen): This part of the Editing_File is cleared whenever
// the contents of the file is set.
struct Editing_File_State{
b32 is_dummy;
b32 is_loading;
i16 font_id;
Buffer_Type buffer;
i32 cursor_pos;
Undo_Data undo;
Cpp_Token_Stack token_stack;
Cpp_Token_Stack swap_stack;
u32 lex_job;
b32 tokens_complete;
b32 still_lexing;
Text_Effect paste_effect;
File_Sync_State sync;
u64 last_4ed_write_time;
u64 last_4ed_edit_time;
u64 last_sys_write_time;
};
struct Editing_File_Preload{
i32 start_line;
};
struct Editing_File_Name{
char live_name_[256];
char source_path_[256];
char extension_[16];
String live_name;
String source_path;
String extension;
};
struct File_Node{
File_Node *next, *prev;
};
union File_ID{
i32 id;
i16 part[2];
};
inline File_ID
to_file_id(i32 id){
File_ID result;
result.id = id;
return(result);
}
struct Editing_File{
// NOTE(allen): node must be the first member of Editing_File!
File_Node node;
Editing_File_Settings settings;
union{
Editing_File_State state;
Editing_File_Preload preload;
};
Editing_File_Name name;
File_ID id;
};
struct Non_File_Table_Entry{
String name;
File_ID id;
};
struct File_Table_Entry{
Unique_Hash key;
File_ID id;
};
internal u32
tbl_file_hash(void *item, void *arg){
Unique_Hash uhash = *((Unique_Hash*)item);
u32 hash = uhash.d[0] + 101;
hash = ((hash << 6) + hash) + uhash.d[1];
hash = ((hash << 6) + hash) + uhash.d[2];
hash = ((hash << 6) + hash) + uhash.d[3];
hash = ((hash << 6) + hash) + uhash.non_file_id;
return(hash);
}
internal i32
tbl_file_compare(void *a, void *b, void *arg){
Unique_Hash ahash = *((Unique_Hash*)a);
Unique_Hash bhash = *((Unique_Hash*)b);
i32 result = !uhash_equal(ahash, bhash);
return(result);
}
struct File_Array{
Editing_File *files;
i32 size;
};
struct Working_Set{
File_Array *file_arrays;
i32 file_count, file_max;
i16 array_count, array_max;
File_Node free_sentinel;
File_Node used_sentinel;
Table non_file_table;
Table table;
String clipboards[64];
i32 clipboard_size, clipboard_max_size;
i32 clipboard_current, clipboard_rolling;
};
internal void
working_set_extend_memory(Working_Set *working_set, Editing_File *new_space, i16 number_of_files){
File_ID id;
i16 i, high_part;
Editing_File *file_ptr;
File_Node *free_sentinel;
Assert(working_set->array_count < working_set->array_max);
high_part = working_set->array_count++;
working_set->file_arrays[high_part].files = new_space;
working_set->file_arrays[high_part].size = number_of_files;
working_set->file_max += number_of_files;
id.part[1] = high_part;
file_ptr = new_space;
free_sentinel = &working_set->free_sentinel;
for (i = 0; i < number_of_files; ++i, ++file_ptr){
id.part[0] = i;
file_ptr->id = id;
dll_insert(free_sentinel, &file_ptr->node);
}
}
internal Editing_File*
working_set_alloc(Working_Set *working_set){
Editing_File *result = 0;
File_Node *node;
File_ID id;
if (working_set->file_count < working_set->file_max){
node = working_set->free_sentinel.next;
Assert(node != &working_set->free_sentinel);
result = (Editing_File*)node;
dll_remove(node);
// NOTE(allen): What I really want to do here is clear everything
// except id, but writing that out will be a pain to maintain.
id = result->id;
*result = {};
result->id = id;
dll_insert(&working_set->used_sentinel, node);
++working_set->file_count;
}
return result;
}
internal Editing_File*
working_set_alloc_always(Working_Set *working_set, General_Memory *general){
Editing_File *result = 0;
Editing_File *new_chunk;
i32 full_new_count = working_set->file_max;
i16 new_count;
if (full_new_count > max_i16) new_count = max_i16;
else new_count = (i16)full_new_count;
if (working_set->file_count == working_set->file_max &&
working_set->array_count < working_set->array_max){
new_chunk = gen_array(general, Editing_File, new_count);
working_set_extend_memory(working_set, new_chunk, new_count);
}
result = working_set_alloc(working_set);
return(result);
}
inline void
working_set_free_file(Working_Set *working_set, Editing_File *file){
file->state.is_dummy = 1;
dll_remove(&file->node);
dll_insert(&working_set->free_sentinel, &file->node);
--working_set->file_count;
}
inline Editing_File*
working_set_index(Working_Set *working_set, File_ID id){
Editing_File *result = 0;
File_Array *array;
if (id.part[1] >= 0 && id.part[1] < working_set->array_count){
array = working_set->file_arrays + id.part[1];
if (id.part[0] >= 0 && id.part[0] < array->size){
result = array->files + id.part[0];
}
}
return(result);
}
inline Editing_File*
working_set_index(Working_Set *working_set, i32 id){
Editing_File *result;
result = working_set_index(working_set, to_file_id(id));
return(result);
}
inline Editing_File*
working_set_get_active_file(Working_Set *working_set, File_ID id){
Editing_File *result = 0;
result = working_set_index(working_set, id);
if (result && result->state.is_dummy){
result = 0;
}
return(result);
}
inline Editing_File*
working_set_get_active_file(Working_Set *working_set, i32 id){
Editing_File *result;
result = working_set_get_active_file(working_set, to_file_id(id));
return(result);
}
inline Editing_File*
working_set_contains_file(Working_Set *working_set, Unique_Hash file_hash){
Editing_File *result = 0;
File_Table_Entry *entry = 0;
entry = (File_Table_Entry*)table_find_item(
&working_set->table, &file_hash, 0, tbl_file_hash, tbl_file_compare);
if (entry){
result = working_set_index(working_set, entry->id);
}
return (result);
}
inline Editing_File*
working_set_contains_non_file(Working_Set *working_set, String filename){
Editing_File *result = 0;
Non_File_Table_Entry *entry = 0;
entry = (Non_File_Table_Entry*)table_find_item(
&working_set->non_file_table, &filename, 0, tbl_string_hash, tbl_string_compare);
if (entry){
result = working_set_index(working_set, entry->id);
}
return (result);
}
inline Editing_File*
working_set_contains(System_Functions *system, Working_Set *working_set, String filename){
Unique_Hash file_hash;
Editing_File *result;
b32 success = 0;
//terminate_with_null(&filename);
file_hash = system->file_unique_hash(filename, &success);
if (success){
result = working_set_contains_file(working_set, file_hash);
}
else{
result = working_set_contains_non_file(working_set, filename);
}
return(result);
}
internal void
working_set_init(Working_Set *working_set, Partition *partition, General_Memory *general){
i16 init_count = 16;
i16 array_init_count = 256;
Editing_File *files, *null_file;
void *mem;
i32 mem_size, table_size;
dll_init_sentinel(&working_set->free_sentinel);
dll_init_sentinel(&working_set->used_sentinel);
working_set->array_max = array_init_count;
working_set->file_arrays = push_array(partition, File_Array, array_init_count);
files = push_array(partition, Editing_File, init_count);
working_set_extend_memory(working_set, files, init_count);
null_file = working_set_index(working_set, 0);
dll_remove(&null_file->node);
null_file->state.is_dummy = 1;
++working_set->file_count;
table_size = working_set->file_max;
mem_size = table_required_mem_size(table_size, sizeof(File_Table_Entry));
mem = general_memory_allocate(general, mem_size, 0);
memset(mem, 0, mem_size);
table_init_memory(&working_set->table, mem, table_size, sizeof(File_Table_Entry));
table_size = working_set->file_max; // / 4;
mem_size = table_required_mem_size(table_size, sizeof(Non_File_Table_Entry));
mem = general_memory_allocate(general, mem_size, 0);
memset(mem, 0, mem_size);
table_init_memory(&working_set->non_file_table, mem, table_size, sizeof(Non_File_Table_Entry));
}
inline void
working_set_grow_if_needed(Table *table, General_Memory *general, void *arg, Hash_Function *hash_func, Compare_Function *comp_func){
Table btable;
i32 new_max, mem_size;
void *mem;
if (table_at_capacity(table)){
new_max = table->max * 2;
mem_size = table_required_mem_size(new_max, table->item_size);
mem = general_memory_allocate(general, mem_size, 0);
table_init_memory(&btable, mem, new_max, table->item_size);
table_clear(&btable);
table_rehash(table, &btable, 0, hash_func, comp_func);
general_memory_free(general, table->hash_array);
*table = btable;
}
}
inline void
working_set_add_file(Working_Set *working_set, Unique_Hash key, File_ID file_id, General_Memory *general){
File_Table_Entry entry;
entry.key = key;
entry.id = file_id;
working_set_grow_if_needed(&working_set->table, general, 0, tbl_file_hash, tbl_file_compare);
table_add(&working_set->table, &entry, 0, tbl_file_hash, tbl_file_compare);
}
inline void
working_set_add_non_file(Working_Set *working_set, String filename, File_ID file_id, General_Memory *general){
Non_File_Table_Entry entry;
entry.name = filename;
entry.id = file_id;
working_set_grow_if_needed(&working_set->table, general, 0, tbl_string_hash, tbl_string_compare);
table_add(&working_set->non_file_table, &entry, 0, tbl_string_hash, tbl_string_compare);
}
inline void
working_set_add(System_Functions *system, Working_Set *working_set, Editing_File *file, General_Memory *general){
Unique_Hash file_hash;
b32 success = 0;
file_hash = system->file_unique_hash(file->name.source_path, &success);
if (success){
working_set_add_file(working_set, file_hash, file->id, general);
}
else{
working_set_add_non_file(working_set, file->name.source_path, file->id, general);
}
}
inline void
working_set_remove_file(Working_Set *working_set, Unique_Hash file_hash){
table_remove_match(&working_set->table, &file_hash, 0, tbl_file_hash, tbl_file_compare);
}
inline void
working_set_remove_non_file(Working_Set *working_set, String filename){
table_remove_match(&working_set->non_file_table, &filename, 0, tbl_string_hash, tbl_string_compare);
}
inline void
working_set_remove(System_Functions *system, Working_Set *working_set, String filename){
Unique_Hash file_hash;
b32 success = 0;
file_hash = system->file_unique_hash(filename, &success);
if (success){
working_set_remove_file(working_set, file_hash);
}
else{
working_set_remove_non_file(working_set, filename);
}
}
// TODO(allen): Pick better first options.
internal Editing_File*
working_set_lookup_file(Working_Set *working_set, String string){
Editing_File *file = 0;
replace_char(string, '\\', '/');
{
File_Node *node, *used_nodes;
used_nodes = &working_set->used_sentinel;
for (dll_items(node, used_nodes)){
file = (Editing_File*)node;
if (string.size == 0 || match(string, file->name.live_name)){
break;
}
}
if (node == used_nodes) file = 0;
}
if (!file){
File_Node *node, *used_nodes;
used_nodes = &working_set->used_sentinel;
for (dll_items(node, used_nodes)){
file = (Editing_File*)node;
if (string.size == 0 || has_substr(file->name.live_name, string)){
break;
}
}
if (node == used_nodes) file = 0;
}
return (file);
}
// Hot Directory
struct Hot_Directory{
String string;
File_List file_list;
char slash;
};
internal void
hot_directory_clean_end(Hot_Directory *hot_directory){
String *str = &hot_directory->string;
if (str->size != 0 && str->str[str->size-1] != hot_directory->slash){
str->size = reverse_seek_slash(*str) + 1;
str->str[str->size] = 0;
}
}
internal i32
hot_directory_quick_partition(File_Info *infos, i32 start, i32 pivot){
File_Info *p = infos + pivot;
File_Info *a = infos + start;
for (i32 i = start; i < pivot; ++i, ++a){
i32 comp = 0;
comp = p->folder - a->folder;
if (comp == 0) comp = compare(a->filename, p->filename);
if (comp < 0){
Swap(*a, infos[start]);
++start;
}
}
Swap(*p, infos[start]);
return start;
}
internal void
hot_directory_quick_sort(File_Info *infos, i32 start, i32 pivot){
i32 mid = hot_directory_quick_partition(infos, start, pivot);
if (start < mid-1) hot_directory_quick_sort(infos, start, mid-1);
if (mid+1 < pivot) hot_directory_quick_sort(infos, mid+1, pivot);
}
inline void
hot_directory_fixup(Hot_Directory *hot_directory, Working_Set *working_set){
File_List *files = &hot_directory->file_list;
if (files->count >= 2)
hot_directory_quick_sort(files->infos, 0, files->count - 1);
}
inline void
hot_directory_set(System_Functions *system, Hot_Directory *hot_directory,
String str, Working_Set *working_set){
b32 success = copy_checked(&hot_directory->string, str);
terminate_with_null(&hot_directory->string);
if (success){
if (str.size > 0){
system->set_file_list(&hot_directory->file_list, str);
}
else{
system->set_file_list(&hot_directory->file_list, make_string((char*)1, 0));
}
}
hot_directory_fixup(hot_directory, working_set);
}
inline void
hot_directory_reload(System_Functions *system, Hot_Directory *hot_directory, Working_Set *working_set){
system->set_file_list(&hot_directory->file_list, hot_directory->string);
hot_directory_fixup(hot_directory, working_set);
}
internal void
hot_directory_init(Hot_Directory *hot_directory, String base, String dir, char slash){
hot_directory->string = base;
hot_directory->string.str[255] = 0;
hot_directory->string.size = 0;
copy(&hot_directory->string, dir);
append(&hot_directory->string, slash);
hot_directory->slash = slash;
}
struct Hot_Directory_Match{
String filename;
b32 is_folder;
};
internal b32
filename_match(String query, Absolutes *absolutes, String filename, b32 case_sensitive){
b32 result;
result = (query.size == 0);
replace_char(query, '\\', '/');
replace_char(filename, '\\', '/');
if (!result) result = wildcard_match(absolutes, filename, case_sensitive);
return result;
}
internal Hot_Directory_Match
hot_directory_first_match(Hot_Directory *hot_directory,
String str,
b32 include_files,
b32 exact_match,
b32 case_sensitive){
Hot_Directory_Match result = {};
replace_char(str, '\\', '/');
Absolutes absolutes;
if (!exact_match)
get_absolutes(str, &absolutes, 1, 1);
File_List *files = &hot_directory->file_list;
File_Info *info, *end;
end = files->infos + files->count;
for (info = files->infos; info != end; ++info){
String filename = info->filename;
b32 is_match = 0;
if (exact_match){
if (case_sensitive){
if (match(filename, str)) is_match = 1;
}
else{
if (match_unsensitive(filename, str)) is_match = 1;
}
}
else{
if (filename_match(str, &absolutes, filename, case_sensitive)) is_match = 1;
}
if (is_match){
result.is_folder = info->folder;
result.filename = filename;
break;
}
}
return result;
}
inline File_Sync_State
buffer_get_sync(Editing_File *file){
File_Sync_State result = SYNC_GOOD;
if (file->state.last_4ed_write_time != file->state.last_sys_write_time)
result = SYNC_BEHIND_OS;
else if (file->state.last_4ed_edit_time > file->state.last_sys_write_time)
result = SYNC_UNSAVED;
return result;
}
inline b32
buffer_needs_save(Editing_File *file){
b32 result = 0;
if (file->settings.unimportant == 0)
if (buffer_get_sync(file) == SYNC_UNSAVED)
result = 1;
return(result);
}
inline b32
file_is_ready(Editing_File *file){
b32 result = 0;
if (file && file->state.is_loading == 0){
result = 1;
}
return(result);
}
inline void
file_set_to_loading(Editing_File *file){
file->state = {};
file->settings = {};
file->state.is_loading = 1;
}
// BOTTOM
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