Added commandline 7z support

file.c

@@ -132,7 +132,27 @@ error:
 static ssize_t read_content_file(const char *path, void **buf)
 {
    uint8_t *ret_buf = NULL;
-   ssize_t ret = read_file(path, (void**)&ret_buf);
+   ssize_t ret = -1;
+   /* Here we check, whether the file, we are about to read is inside an archive, or not.
+      We determine, whether a file is inside a compressed archive, by checking, if the archive string is a substring of the
+      complete path
+      For example: fullpath: /home/user/game.7z/mygame.rom
+                   carchive_path: /home/user/game.7z */
+#ifdef HAVE_COMPRESSION
+   char const* archive_found = strstr(path,g_extern.carchive_path);
+   if (g_extern.is_carchive)
+   {
+      if(archive_found)
+      {
+         char rel_path[PATH_MAX];
+         snprintf(rel_path, sizeof(rel_path), archive_found+strlen(g_extern.carchive_path)+1);
+         ret = read_compressed_file(g_extern.carchive_path, rel_path, (void**)&ret_buf);
+      }
+   }
+   else
+#endif
+      ret = read_file(path, (void**)&ret_buf);
+
    if (ret <= 0)
       return ret;
 

file_path.c

@@ -60,6 +60,10 @@
 #include <unistd.h>
 #endif
 
+#ifdef HAVE_7ZIP
+#include "decompress/7zip_support.h"
+#endif
+
 /* Dump to file. */
 bool write_file(const char *path, const void *data, size_t size)
 {
@@ -73,6 +77,17 @@ bool write_file(const char *path, const void *data, size_t size)
    return ret;
 }
 
+/* Generic compressed file loader. */
+#ifdef HAVE_COMPRESSION
+long read_compressed_file(const char * archive_path, const char *relative_path, void **buf)
+{
+#ifdef HAVE_7ZIP
+   return read_7zip_file(archive_path,relative_path,buf);
+#endif
+   return -1;
+}
+#endif
+
 /* Generic file loader. */
 long read_file(const char *path, void **buf)
 {

file_path.h

@@ -26,6 +26,10 @@
 extern "C" {
 #endif
 
+#ifdef HAVE_COMPRESSION
+long read_compressed_file(const char * archive_path, const char *relative_path, void **buf);
+#endif
+
 long read_file(const char *path, void **buf);
 bool read_file_string(const char *path, char **buf);
 bool write_file(const char *path, const void *buf, size_t size);

general.h

@@ -442,6 +442,14 @@ struct global
    char basename[PATH_MAX];
    char fullpath[PATH_MAX];
 
+#ifdef HAVE_COMPRESSION
+   // In case of a compressed archive, this is the path to the archive. Fullpath contains everything
+   char carchive_path[PATH_MAX];
+
+   // True, in case of a compressed archive containing the rom.
+   bool is_carchive;
+#endif
+
    // A list of save types and associated paths for all content.
    struct string_list *savefiles;
 

retroarch.c

@@ -1008,6 +1008,9 @@ static void print_help(void)
    puts("\t\tAvailable commands are listed if command is invalid.");
 #endif
 
+#ifdef HAVE_COMPRESSION
+   puts("\t-z/--carchive: Path to a compressed container containing the main content file.\n\t\tThe main content file has to be specified as a subfile, for example like this:\n\t\t ./retroarch -Lmylib.so -z myfile.7z myfile.7z/myrom.rom .");
+#endif
    puts("\t-r/--record: Path to record video file.\n\t\tUsing .mkv extension is recommended.");
    puts("\t--recordconfig: Path to settings used during recording.");
    puts("\t--size: Overrides output video size when recording (format: WIDTHxHEIGHT).");
@@ -1175,6 +1178,9 @@ static void parse_input(int argc, char *argv[])
       { "detach", 0, NULL, 'D' },
       { "features", 0, &val, 'f' },
       { "subsystem", 1, NULL, 'Z' },
+#ifdef HAVE_COMPRESSION
+      { "carchive", 0, NULL, 'z' },
+#endif
       { NULL, 0, NULL, 0 }
    };
 
@@ -1192,9 +1198,15 @@ static void parse_input(int argc, char *argv[])
 #define NETPLAY_ARG
 #endif
 
+#ifdef HAVE_COMPRESSION
+#define COMPRESS_ARG "z:"
+#else
+#define COMPRESS_ARG
+#endif
+
 #define BSV_MOVIE_ARG "P:R:M:"
 
-   const char *optstring = "hs:fvS:A:c:U:DN:d:" BSV_MOVIE_ARG NETPLAY_ARG DYNAMIC_ARG FFMPEG_RECORD_ARG;
+   const char *optstring = "hs:fvS:A:c:U:DN:d:" BSV_MOVIE_ARG NETPLAY_ARG DYNAMIC_ARG FFMPEG_RECORD_ARG COMPRESS_ARG;
 
    for (;;)
    {
@@ -1313,7 +1325,12 @@ static void parse_input(int argc, char *argv[])
             }
             break;
 #endif
-
+#ifdef HAVE_COMPRESSION
+         case 'z':
+            strlcpy(g_extern.carchive_path, optarg, sizeof(g_extern.carchive_path));
+            g_extern.is_carchive = true;
+            break;
+#endif
          case 'P':
          case 'R':
             strlcpy(g_extern.bsv.movie_start_path, optarg,