src/game/level_folder.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 #include "system/stacktrace.h"
   5 #include "system/lt.h"
   6 #include "system/nth_alloc.h"
   7 #include "system/line_stream.h"
   8 #include "system/str.h"
   9 #include "dynarray.h"
  10 #include "game/level_metadata.h"
  11
  12 #include "./level_folder.h"
  13
  14 #define LEVEL_FOLDER_MAX_LENGTH 512
  15
  16 struct LevelFolder
  17 {
  18     Lt *lt;
  19     Dynarray *filenames;
  20     Dynarray *titles;
  21 };
  22
  23 LevelFolder *create_level_folder(const char *dirpath)
  24 {
  25     trace_assert(dirpath);
  26
  27     Lt *lt = create_lt();
  28     if (lt == NULL) {
  29         return NULL;
  30     }
  31
  32     LevelFolder *level_folder = PUSH_LT(
  33         lt,
  34         nth_calloc(1, sizeof(LevelFolder)),
  35         free);
  36     if (level_folder == NULL) {
  37         RETURN_LT(lt, NULL);
  38     }
  39     level_folder->lt = lt;
  40
  41     level_folder->filenames = PUSH_LT(
  42         lt,
  43         create_dynarray(sizeof(const char*)),
  44         destroy_dynarray);
  45     if (level_folder->filenames == NULL) {
  46         RETURN_LT(lt, NULL);
  47     }
  48
  49     level_folder->titles = PUSH_LT(
  50         lt,
  51         create_dynarray(sizeof(const char*)),
  52         destroy_dynarray);
  53     if (level_folder->titles == NULL) {
  54         RETURN_LT(lt, NULL);
  55     }
  56
  57     char path[LEVEL_FOLDER_MAX_LENGTH];
  58     snprintf(path, LEVEL_FOLDER_MAX_LENGTH, "%s/meta.txt", dirpath);
  59
  60     LineStream *meta = PUSH_LT(
  61         lt,
  62         create_line_stream(
  63             path,
  64             "r",
  65             LEVEL_FOLDER_MAX_LENGTH),
  66         destroy_line_stream);
  67     if (meta == NULL) {
  68         RETURN_LT(lt, NULL);
  69     }
  70
  71     const char *line = line_stream_next(meta);
  72     while (line) {
  73         snprintf(path, LEVEL_FOLDER_MAX_LENGTH, "%s/%s", dirpath, line);
  74         line = PUSH_LT(lt, string_duplicate(trim_endline(path), NULL), free);
  75         if (line == NULL) {
  76             RETURN_LT(lt, NULL);
  77         }
  78
  79         LevelMetadata *level_metadata = create_level_metadata_from_file(line);
  80         if (level_metadata == NULL) {
  81             RETURN_LT(lt, NULL);
  82         }
  83         const char *title = PUSH_LT(
  84             lt,
  85             string_duplicate(level_metadata_title(level_metadata), NULL),
  86             free);
  87         destroy_level_metadata(level_metadata);
  88
  89         dynarray_push(level_folder->titles, &title);
  90         dynarray_push(level_folder->filenames, &line);
  91
  92         line = line_stream_next(meta);
  93     }
  94
  95     destroy_line_stream(RELEASE_LT(lt, meta));
  96
  97     return level_folder;
  98 }
  99
 100 void destroy_level_folder(LevelFolder *level_folder)
 101 {
 102     trace_assert(level_folder);
 103     RETURN_LT0(level_folder->lt);
 104 }
 105
 106 const char **level_folder_filenames(const LevelFolder *level_folder)
 107 {
 108     trace_assert(level_folder);
 109     return dynarray_data(level_folder->filenames);
 110 }
 111
 112 const char **level_folder_titles(const LevelFolder *level_folder)
 113 {
 114     trace_assert(level_folder);
 115     return dynarray_data(level_folder->titles);
 116 }
 117
 118 size_t level_folder_count(const LevelFolder *level_folder)
 119 {
 120     trace_assert(level_folder);
 121     return dynarray_count(level_folder->filenames);
 122 }