Support getting updates for Thor's Lha

Author: chris-y

src/http.c

@@ -1,5 +1,5 @@
 /* Avalanche
- * (c) 2023-5 Chris Young
+ * (c) 2023-6 Chris Young
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -312,6 +312,7 @@ static BOOL http_check_version_internal(void)
 	ULONG bufsize = 1024;
 	char *buffer = AllocVec(bufsize + 1, MEMF_CLEAR);
 	BOOL update_available = FALSE;
+	BOOL thor_lha = FALSE;
 
 	static struct avalanche_version_numbers avn[] = {
 		{	.name = "Avalanche\0",
@@ -358,7 +359,12 @@ static BOOL http_check_version_internal(void)
 			.download_url = "https://aminet.net/util/arc/lha_68k.lha\0",
 #endif
 		},
-#ifdef __amigaos4__
+#ifndef __amigaos4__
+		{	.name = "Lha (Thor)\0",
+			.check_url = "https://aminet.net/util/arc/Lha_thor.readme\0",
+			.download_url = "https://aminet.net/util/arc/Lha_thor.lha\0",
+		}
+#else
 		{	.name = "zip.library\0",
 			.check_url = "https://os4depot.net/share/library/misc/zip_lib_lha.readme\0",
 			.download_url = "https://os4depot.net/share/library/misc/zip_lib.lha\0",
@@ -407,8 +413,21 @@ static BOOL http_check_version_internal(void)
 				case ACHECKVER_LHA:
 					avn[ACHECKVER_LHA].current_version = 0;
 					avn[ACHECKVER_LHA].current_revision = 0;
-					mod_lha_get_ver(&avn[ACHECKVER_LHA].current_version, &avn[ACHECKVER_LHA].current_revision);
+					thor_lha = mod_lha_get_ver(&avn[ACHECKVER_LHA].current_version, &avn[ACHECKVER_LHA].current_revision);
+				break;
+				
+#ifndef __amigaos4__
+				case ACHECKVER_LHA_THOR:
+					if(thor_lha) {
+						avn[ACHECKVER_LHA_THOR].current_version = avn[ACHECKVER_LHA].current_version;
+						avn[ACHECKVER_LHA_THOR].current_revision = avn[ACHECKVER_LHA].current_revision;
+
+						avn[ACHECKVER_LHA].check_url = NULL;
+						avn[ACHECKVER_LHA].current_version = 0;
+						avn[ACHECKVER_LHA].current_revision = 0;
+					}
 				break;
+#endif					
 
 #ifdef __amigaos4__
 				case ACHECKVER_ZIP:

src/mod_lha.c

@@ -1,5 +1,5 @@
 /* Avalanche
- * (c) 2022-5 Chris Young
+ * (c) 2022-6 Chris Young
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -159,9 +159,11 @@ BOOL mod_lha_new(void *awin, char *archive)
 #define AVALANCHE_LHA_VER_CMD "version c:lha"
 #endif
 
-ULONG mod_lha_get_ver(ULONG *ver, ULONG *rev)
+BOOL mod_lha_get_ver(ULONG *ver, ULONG *rev)
 {
 	BPTR fh = 0;
+	BPTR thor = FALSE;
+	
 	CONFIG_LOCK;
 	ULONG tmpfile_len = CONFIG_GET(tmpdirlen) + 30;
 	char *tmpfile = AllocVec(tmpfile_len, MEMF_CLEAR);
@@ -197,6 +199,10 @@ ULONG mod_lha_get_ver(ULONG *ver, ULONG *rev)
 			if(strncmp(p, "LhA ", 4) == 0) {
 				p += 4;
 				break;
+			} else if(strncmp(p, "Lha ", 4) == 0) {
+				thor = TRUE;
+				p += 4;
+				break;
 			}
 		}
 
@@ -209,7 +215,7 @@ ULONG mod_lha_get_ver(ULONG *ver, ULONG *rev)
 
 	FreeVec(tmpfile);
 
-	return *ver;
+	return thor;
 }
 
 void mod_lha_register(struct module_functions *funcs)

src/module.h

@@ -71,5 +71,5 @@ void mod_lha_register(struct module_functions *funcs);
 
 /*** Get version info ***/
 ULONG mod_zip_get_ver(ULONG *ver, ULONG *rev);
-ULONG mod_lha_get_ver(ULONG *ver, ULONG *rev);
+BOOL mod_lha_get_ver(ULONG *ver, ULONG *rev); /* Returns FALSE=Original, TRUE=Thor */
 #endif

src/update.c

@@ -1,5 +1,5 @@
 /* Avalanche
- * (c) 2025 Chris Young
+ * (c) 2025-6 Chris Young
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -239,6 +239,10 @@ void update_gui(struct avalanche_version_numbers avn[])
 		NewList(&list);
 
 		for(int i = 0; i < ACHECKVER_MAX; i++) {
+#ifndef __amigaos4__
+			/* Skip LhA if not installed (we will show Lha) */
+			if((i == ACHECKVER_LHA) && ((avn[i].current_version == 0) && (avn[i].current_revision == 0))) continue;
+#endif
 			char installed_version[10];
 			char latest_version[10];
 			ULONG update_glyph = avn[i].update_available ? GLYPH_CHECKMARK : AVALANCHE_GLYPH_NONE;

src/update.h

@@ -1,5 +1,5 @@
 /* Avalanche
- * (c) 2025 Chris Young
+ * (c) 2025-6 Chris Young
  * 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -31,7 +31,9 @@ enum {
         ACHECKVER_XVS,
         ACHECKVER_DEARK,
         ACHECKVER_LHA,
-#ifdef __amigaos4__
+#ifndef __amigaos4__
+        ACHECKVER_LHA_THOR,
+#else
         ACHECKVER_ZIP,
 #endif
         ACHECKVER_MAX