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-rw-r--r--paths.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/paths.c b/paths.c
new file mode 100644
index 0000000..49a3c5c
--- /dev/null
+++ b/paths.c
@@ -0,0 +1,143 @@
+#include <string.h>
+#include <stdlib.h>
+#include "blastem.h"
+#include "util.h"
+
+static char **current_path;
+
+static void persist_path(void)
+{
+ char const *parts[] = {get_userdata_dir(), PATH_SEP, "sticky_path"};
+ char *pathfname = alloc_concat_m(3, parts);
+ FILE *f = fopen(pathfname, "wb");
+ if (f) {
+ if (fwrite(*current_path, 1, strlen(*current_path), f) != strlen(*current_path)) {
+ warning("Failed to save menu path");
+ }
+ fclose(f);
+ } else {
+ warning("Failed to save menu path: Could not open %s for writing\n", pathfname);
+
+ }
+ free(pathfname);
+}
+
+#ifdef __ANDROID__
+#include <SDL.h>
+#include <jni.h>
+static char *get_external_storage_path()
+{
+ static char *ret;
+ if (ret) {
+ return ret;
+ }
+ JNIEnv *env = SDL_AndroidGetJNIEnv();
+ if ((*env)->PushLocalFrame(env, 8) < 0) {
+ return NULL;
+ }
+
+ jclass Environment = (*env)->FindClass(env, "android/os/Environment");
+ jmethodID getExternalStorageDirectory =
+ (*env)->GetStaticMethodID(env, Environment, "getExternalStorageDirectory", "()Ljava/io/File;");
+ jobject file = (*env)->CallStaticObjectMethod(env, Environment, getExternalStorageDirectory);
+ if (!file) {
+ goto cleanup;
+ }
+
+ jmethodID getAbsolutePath = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, file),
+ "getAbsolutePath", "()Ljava/lang/String;");
+ jstring path = (*env)->CallObjectMethod(env, file, getAbsolutePath);
+
+ char const *tmp = (*env)->GetStringUTFChars(env, path, NULL);
+ ret = strdup(tmp);
+ (*env)->ReleaseStringUTFChars(env, path, tmp);
+
+cleanup:
+ (*env)->PopLocalFrame(env, NULL);
+ return ret;
+}
+#endif
+
+void get_initial_browse_path(char **dst)
+{
+ *dst = NULL;
+ char *remember_path = tern_find_path(config, "ui\0remember_path\0", TVAL_PTR).ptrval;
+ if (!remember_path || !strcmp("on", remember_path)) {
+ char const *parts[] = {get_userdata_dir(), PATH_SEP, "sticky_path"};
+ char *pathfname = alloc_concat_m(3, parts);
+ FILE *f = fopen(pathfname, "rb");
+ if (f) {
+ long pathsize = file_size(f);
+ if (pathsize > 0) {
+ *dst = malloc(pathsize + 1);
+ if (fread(*dst, 1, pathsize, f) != pathsize) {
+ warning("Error restoring saved file browser path");
+ free(*dst);
+ *dst = NULL;
+ } else {
+ (*dst)[pathsize] = 0;
+ }
+ }
+ fclose(f);
+ }
+ free(pathfname);
+ if (!current_path) {
+ atexit(persist_path);
+ current_path = dst;
+ }
+ }
+ if (!*dst) {
+ *dst = tern_find_path(config, "ui\0initial_path\0", TVAL_PTR).ptrval;
+ }
+ if (!*dst){
+#ifdef __ANDROID__
+ *dst = get_external_storage_path();
+#else
+ *dst = "$HOME";
+#endif
+ }
+ tern_node *vars = tern_insert_ptr(NULL, "HOME", get_home_dir());
+ vars = tern_insert_ptr(vars, "EXEDIR", get_exe_dir());
+ *dst = replace_vars(*dst, vars, 1);
+ tern_free(vars);
+}
+
+char *path_append(const char *base, const char *suffix)
+{
+ if (!strcmp(suffix, "..")) {
+#ifdef _WIN32
+ //handle transition from root of a drive to virtual root
+ if (base[1] == ':' && !base[2]) {
+ return strdup(PATH_SEP);
+ }
+#endif
+ size_t len = strlen(base);
+ while (len > 0) {
+ --len;
+ if (is_path_sep(base[len])) {
+ if (!len) {
+ //special handling for /
+ len++;
+ }
+ char *ret = malloc(len+1);
+ memcpy(ret, base, len);
+ ret[len] = 0;
+ return ret;
+ }
+ }
+ return strdup(PATH_SEP);
+ } else {
+#ifdef _WIN32
+ if (base[0] == PATH_SEP[0] && !base[1]) {
+ //handle transition from virtual root to root of a drive
+ return strdup(suffix);
+ }
+#endif
+ if (is_path_sep(base[strlen(base) - 1])) {
+ return alloc_concat(base, suffix);
+ } else {
+ char const *pieces[] = {base, PATH_SEP, suffix};
+ return alloc_concat_m(3, pieces);
+ }
+ }
+}