Add the --readonly option to the ".open" command in the CLI.

FossilOrigin-Name: 06870bb15656b50b0e14d4364bb21afac76500e313ecf67aaef3688d603fd076

manifest

@@ -1,5 +1,5 @@
-C Performance\soptimizations\sto\sthe\seditdist3()\sfunction\sin\sthe\sspellfix\nextension.
-D 2018-02-14T20:58:36.311
+C Add\sthe\s--readonly\soption\sto\sthe\s".open"\scommand\sin\sthe\sCLI.
+D 2018-02-14T23:27:43.700
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F Makefile.in 7a3f714b4fcf793108042b7b0a5c720b0b310ec84314d61ba7f3f49f27e550ea
@@ -489,7 +489,7 @@ F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
 F src/resolve.c bbee7e31d369a18a2f4836644769882e9c5d40ef4a3af911db06410b65cb3730
 F src/rowset.c 7b7e7e479212e65b723bf40128c7b36dc5afdfac
 F src/select.c f02352ac5cbb6fad3804add825743b924cfb6c742ba2e8666d726828a9985d73
-F src/shell.c.in 0b2c8d55e3703723a22610d75ccd4037962c3bcb5ad5570efd781e8c521811c4
+F src/shell.c.in 6fdccd0a2879dab2e0fc2ffedccddebc1f84bd88a806d28c2774ec5e4feca479
 F src/sqlite.h.in 51f9acf52c80113d793ddd38b3940ad6895d97b4752503b19291fb8fcbf54c5e
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 83a3c4ce93d650bedfd1aa558cb85a516bd6d094445ee989740827d0d944368d
@@ -1706,7 +1706,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 3c53ee0fdea4cbf2590e2b289b021b0ef8b7ead2945db1bdfc767432d9447acb
-R 52a6749d61b6207535a693308aa98655
+P 70d304dcbac4c3fd5e3b96108bffea2ce6c0db19c847397d5c5e268bb90a981d
+R 2fdde9b3aa61b61468b1828a4e04c2be
 U drh
-Z c6d9011f82c1274dfef70231bb03befb
+Z 881e2b520c52d585df5898197d96b448

manifest.uuid

@@ -1 +1 @@
-70d304dcbac4c3fd5e3b96108bffea2ce6c0db19c847397d5c5e268bb90a981d
+06870bb15656b50b0e14d4364bb21afac76500e313ecf67aaef3688d603fd076

src/shell.c.in

@@ -1069,6 +1069,7 @@ struct ShellState {
 #define SHELL_OPEN_NORMAL     1      /* Normal database file */
 #define SHELL_OPEN_APPENDVFS  2      /* Use appendvfs */
 #define SHELL_OPEN_ZIPFILE    3      /* Use the zipfile virtual table */
+#define SHELL_OPEN_READONLY   4      /* Open a normal database read-only */
 
 /*
 ** These are the allowed shellFlgs values
@@ -3258,6 +3259,7 @@ static char zHelp[] =
   "                         on the output.\n"
   ".open ?OPTIONS? ?FILE? Close existing database and reopen FILE\n"
   "                         The --new option starts with an empty file\n"
+  "                         Other options: --readonly --append --zip\n"
   ".output ?FILE?         Send output to FILE or stdout\n"
   ".print STRING...       Print literal STRING\n"
   ".prompt MAIN CONTINUE  Replace the standard prompts\n"
@@ -3454,6 +3456,10 @@ static void open_db(ShellState *p, int keepAlive){
         sqlite3_open(":memory:", &p->db);
         break;
       }
+      case SHELL_OPEN_READONLY: {
+        sqlite3_open_v2(p->zDbFilename, &p->db, SQLITE_OPEN_READONLY, 0);
+        break;
+      }
       case SHELL_OPEN_UNSPEC:
       case SHELL_OPEN_NORMAL: {
         sqlite3_open(p->zDbFilename, &p->db);
@@ -6307,6 +6313,8 @@ static int do_meta_command(char *zLine, ShellState *p){
 #endif
       }else if( optionMatch(z, "append") ){
         p->openMode = SHELL_OPEN_APPENDVFS;
+      }else if( optionMatch(z, "readonly") ){
+        p->openMode = SHELL_OPEN_READONLY;
       }else if( z[0]=='-' ){
         utf8_printf(stderr, "unknown option: %s\n", z);
         rc = 1;
@@ -7985,6 +7993,7 @@ static const char zOptions[] =
   "   -nullvalue TEXT      set text string for NULL values. Default ''\n"
   "   -pagecache SIZE N    use N slots of SZ bytes each for page cache memory\n"
   "   -quote               set output mode to 'quote'\n"
+  "   -readonly            open the database read-only\n"
   "   -separator SEP       set output column separator. Default: '|'\n"
   "   -stats               print memory stats before each finalize\n"
   "   -version             show SQLite version\n"
@@ -8234,6 +8243,8 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
 #endif
     }else if( strcmp(z,"-append")==0 ){
       data.openMode = SHELL_OPEN_APPENDVFS;
+    }else if( strcmp(z,"-readonly")==0 ){
+      data.openMode = SHELL_OPEN_READONLY;
     }
   }
   if( data.zDbFilename==0 ){