From: drh <>
Date: Mon, 11 Nov 2024 19:07:58 +0000 (+0000)
Subject: Add the ".dbtotxt" command to the CLI.
X-Git-Tag: major-relase~173
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=be46f935dc3d2e5a033d5427f636fa3c521e06d2;p=thirdparty%2Fsqlite.git

Add the ".dbtotxt" command to the CLI.

FossilOrigin-Name: b43acf5a8cd4a5efbb90b71af7710084f49bb90ffe4f56de168e8c3a6b679124
---

diff --git a/manifest b/manifest
index 7dd4be8871..7154ba0838 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Wrap\ssome\sexceptionally\slong\slines\sin\smain.mk.\sAdd\soption\sto\soverride\sLDFLAGS\son\sthe\ssqlite3.dll\starget.\sAudit:\sall\stargets\sfor\swhich\sit\sis\shypothetically\srelevant\scan\snow\sinherit\suser-supplied\sLDFLAGS,\sbut\sonly\sthose\sprovided\sto\sthe\sconfigure\sscript,\snot\sat\smake-time,\sin\sorder\sto\smimic\sthe\shistorical\sbuild's\srestriction\sin\sthat\sregard.
-D 2024-11-11T18:15:50.014
+C Add\sthe\s".dbtotxt"\scommand\sto\sthe\sCLI.
+D 2024-11-11T19:07:58.682
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md e108e1e69ae8e8a59e93c455654b8ac9356a11720d3345df2a4743e9590fb20d
@@ -776,7 +776,7 @@ F src/random.c 606b00941a1d7dd09c381d3279a058d771f406c5213c9932bbd93d5587be4b9c
 F src/resolve.c c8a5372b97b2a2e972a280676f06ddb5b74e885d3b1f5ce383f839907b57ef68
 F src/rowset.c 8432130e6c344b3401a8874c3cb49fefe6873fec593294de077afea2dce5ec97
 F src/select.c 4b14337a2742f0c0beeba490e9a05507e9b4b12184b9cd12773501d08d48e3fe
-F src/shell.c.in bb97e0afcc4a73b73f38cc868330854a2df109095a7a10182ddfdd261fbec312
+F src/shell.c.in 2b684d9cdad2351e6cabe25ea3a64ac743eb4cda9837bdbc6096d240c4533ab6
 F src/sqlite.h.in 599203aa6cf3a662f879e7581f4b7f2678738c0b7c71ddda3c0cb5c59867c399
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 3f046c04ea3595d6bfda99b781926b17e672fd6d27da2ba6d8d8fc39981dcb54
@@ -2198,8 +2198,8 @@ F tool/version-info.c 3b36468a90faf1bbd59c65fd0eb66522d9f941eedd364fabccd7227350
 F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
 F tool/warnings.sh 49a486c5069de041aedcbde4de178293e0463ae9918ecad7539eedf0ec77a139
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P abfe488ed67e2e3510c230e656ecf203afa549ebd1d1872442f1fadc97d0817e
-R 24df96c9d99772830356798614acfd48
-U stephan
-Z 28b6529814c584cc2748223194d7bea5
+P 073080cae3ea0d12b133d9c9ae98413bb32870a9738c98b89bc345181be81f23
+R 6bdbd63031b22370793e2437aff7acb5
+U drh
+Z d185df0f51d41a6d3859bb43f39c0c62
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 24c1159da9..b4972f3476 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-073080cae3ea0d12b133d9c9ae98413bb32870a9738c98b89bc345181be81f23
+b43acf5a8cd4a5efbb90b71af7710084f49bb90ffe4f56de168e8c3a6b679124
diff --git a/src/shell.c.in b/src/shell.c.in
index 874f448f67..3fb608ff7f 100644
--- a/src/shell.c.in
+++ b/src/shell.c.in
@@ -4951,6 +4951,7 @@ static const char *(azHelp[]) = {
 #if SQLITE_SHELL_HAVE_RECOVER
   ".dbinfo ?DB?             Show status information about the database",
 #endif
+  ".dbtotxt                 Hex dump of the database file",
   ".dump ?OBJECTS?          Render database content as SQL",
   "   Options:",
   "     --data-only            Output only INSERT statements",
@@ -6622,6 +6623,101 @@ static int shell_dbinfo_command(ShellState *p, int nArg, char **azArg){
 }
 #endif /* SQLITE_SHELL_HAVE_RECOVER */
 
+/*
+** Implementation of the ".dbtotxt" command.
+**
+** Return 1 on error, 2 to exit, and 0 otherwise.
+*/
+static int shell_dbtotxt_command(ShellState *p, int nArg, char **azArg){
+  sqlite3_stmt *pStmt = 0;
+  sqlite3_int64 nPage = 0;
+  int pgSz = 0;
+  const char *zFilename;
+  const char *zTail;
+  char *zName = 0;
+  int rc, i, j;
+  unsigned char bShow[256];   /* Characters ok to display */
+
+  memset(bShow, '.', sizeof(bShow));
+  for(i=' '; i<='~'; i++){
+    if( i!='{' && i!='}' && i!='"' && i!='\\' ) bShow[i] = (unsigned char)i;
+  }
+  rc = sqlite3_prepare_v2(p->db, "PRAGMA page_size", -1, &pStmt, 0);
+  if( rc ) goto dbtotxt_error;
+  rc = 0;
+  if( sqlite3_step(pStmt)!=SQLITE_ROW ) goto dbtotxt_error;
+  pgSz = sqlite3_column_int(pStmt, 0);
+  sqlite3_finalize(pStmt);
+  pStmt = 0;
+  if( pgSz<512 || pgSz>65536 || (pgSz&(pgSz-1))!=0 ) goto dbtotxt_error;
+  rc = sqlite3_prepare_v2(p->db, "PRAGMA page_count", -1, &pStmt, 0);
+  if( rc ) goto dbtotxt_error;
+  rc = 0;
+  if( sqlite3_step(pStmt)!=SQLITE_ROW ) goto dbtotxt_error;
+  nPage = sqlite3_column_int64(pStmt, 0);
+  sqlite3_finalize(pStmt);
+  pStmt = 0;
+  if( nPage<1 ) goto dbtotxt_error;
+  rc = sqlite3_prepare_v2(p->db, "PRAGMA databases", -1, &pStmt, 0);
+  if( rc ) goto dbtotxt_error;
+  rc = 0;
+  if( sqlite3_step(pStmt)!=SQLITE_ROW ){
+    zTail = zFilename = "unk.db";
+  }else{
+    zFilename = (const char*)sqlite3_column_text(pStmt, 2);
+    if( zFilename==0 || zFilename[0]==0 ) zFilename = "unk.db";
+    zTail = strrchr(zFilename, '/');
+#if defined(_WIN32)
+    if( zTail==0 ) zTail = strrchr(zFilename, '\\');
+#endif
+    if( zTail ) zFilename = zTail;
+  }
+  zName = strdup(zTail);
+  shell_check_oom(zName);
+  sqlite3_fprintf(p->out, "| size %lld pagesize %d filename %s\n",
+                  nPage*pgSz, pgSz, zName);
+  sqlite3_finalize(pStmt);
+  pStmt = 0;
+  rc = sqlite3_prepare_v2(p->db,
+           "SELECT pgno, data FROM sqlite_dbpage ORDER BY pgno", -1, &pStmt, 0);
+  if( rc ) goto dbtotxt_error;
+  rc = 0;
+  while( sqlite3_step(pStmt)==SQLITE_ROW ){
+    sqlite3_int64 pgno = sqlite3_column_int64(pStmt, 0);
+    const u8 *aData = sqlite3_column_blob(pStmt, 1);
+    int seenPageLabel = 0;
+    for(i=0; i<pgSz; i+=16){
+      const u8 *aLine = aData+i;
+      for(j=0; j<16 && aLine[j]==0; j++){}
+      if( j==16 ) continue;
+      if( !seenPageLabel ){
+        sqlite3_fprintf(p->out, "| page %lld offset %lld\n", pgno, pgno*pgSz);
+        seenPageLabel = 1;
+      }
+      sqlite3_fprintf(p->out, "|  %5d:", i);
+      for(j=0; j<16; j++) sqlite3_fprintf(p->out, " %02x", aLine[j]);
+      sqlite3_fprintf(p->out, "   ");
+      for(j=0; j<16; j++){
+        unsigned char c = (unsigned char)aLine[j];
+        sqlite3_fprintf(p->out, "%c", bShow[c]);
+      }
+      sqlite3_fprintf(p->out, "\n");
+    }
+  }
+  sqlite3_finalize(pStmt);
+  sqlite3_fprintf(p->out, "| end %s\n", zName);
+  free(zName);
+  return 0;
+
+dbtotxt_error:
+  if( rc ){
+    sqlite3_fprintf(stderr, "ERROR: %s\n", sqlite3_errmsg(p->db));
+  }
+  sqlite3_finalize(pStmt);
+  free(zName);
+  return 1;
+}
+
 /*
 ** Print the given string as an error message.
 */
@@ -8799,6 +8895,10 @@ static int do_meta_command(char *zLine, ShellState *p){
     }
   }else
 
+  if( c=='d' && n>=3 && cli_strncmp(azArg[0], "dbtotxt", n)==0 ){
+    rc = shell_dbtotxt_command(p, nArg, azArg);
+  }else
+
   if( c=='e' && cli_strncmp(azArg[0], "eqp", n)==0 ){
     if( nArg==2 ){
       p->autoEQPtest = 0;