refactor: extract project related functions to project.c

src/project.c

@@ -0,0 +1,95 @@
+#include "types.h"
+
+#include "config_file.h"
+#include "file.h"
+#include "project.h"
+#include "state.h"
+
+static File read_fragment_shader_file(char *frag_path, char *frag_prefix,
+                                      unsigned int i) {
+  File fragment_shader;
+  char file_path[STR_LEN];
+
+  snprintf(file_path, STR_LEN, "%s/%s%d.glsl", frag_path, frag_prefix, i);
+  fragment_shader = file_read(file_path);
+  if (fragment_shader.error) {
+    exit(EXIT_FAILURE);
+  }
+
+  return fragment_shader;
+}
+
+static void init_files(Project *output, char *frag_path, char *frag_prefix,
+                       unsigned int frag_count) {
+  unsigned int i;
+
+  output->fragment_shaders.length = frag_count;
+
+  for (i = 0; i < frag_count + 1; i++) {
+    if (i == 0) {
+      output->common_shader_code =
+          read_fragment_shader_file(frag_path, frag_prefix, i);
+    } else {
+      output->fragment_shaders.values[i - 1] =
+          read_fragment_shader_file(frag_path, frag_prefix, i);
+
+      file_prepend(&output->fragment_shaders.values[i - 1],
+                   output->common_shader_code);
+    }
+  }
+}
+
+Project project_init(char *project_path, char *config_file) {
+  Project project;
+  char config_path[STR_LEN];
+  char *frag_prefix;
+
+  snprintf(config_path, STR_LEN, "%s/%s", project_path, config_file);
+
+  project.config = config_file_read(config_path);
+
+  project.state_config = state_parse_config(project.config);
+
+  project.frag_count = config_file_get_int(project.config, "FRAG_COUNT", 1);
+  project.in_count = config_file_get_int(project.config, "IN_COUNT", 0);
+  frag_prefix = config_file_get_str(project.config, "FRAG_FILE_PREFIX", "frag");
+
+  init_files(&project, project_path, frag_prefix, project.frag_count);
+
+  return project;
+}
+
+void project_reload(Project *project, void (*reload_callback)(unsigned int)) {
+  unsigned int i;
+  bool force_update;
+
+  force_update = false;
+
+  if (file_should_update(project->common_shader_code)) {
+    file_update(&project->common_shader_code);
+    force_update = true;
+  }
+
+  for (i = 0; i < project->frag_count; i++) {
+    if (force_update ||
+        file_should_update(project->fragment_shaders.values[i])) {
+      file_update(&project->fragment_shaders.values[i]);
+      file_prepend(&project->fragment_shaders.values[i],
+                   project->common_shader_code);
+
+      reload_callback(i);
+    }
+  }
+}
+
+void project_free(Project project) {
+  unsigned int i;
+
+  for (i = 0; i < project.frag_count; i++) {
+    file_free(&project.fragment_shaders.values[i]);
+  }
+
+  file_free(&project.common_shader_code);
+
+  config_file_free(project.config);
+}