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fiddle: initial work on loading a client-side db file. Works but requires some cleanup. Export is not yet implemented.

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FossilOrigin-Name: 0fa8378c006fcf2311772d36cf2e3c2cd8e8648f671de89ee9832e2e1a06ef49
This commit is contained in:
stephan
2022-05-24 19:01:21 +00:00
parent 6af03b469e
commit de1e02ee52
7 changed files with 173 additions and 39 deletions
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16
src/shell.c.in
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@@ -4394,6 +4394,11 @@ static const char *(azHelp[]) = {
" --bom Put a UTF8 byte-order mark at the beginning",
" -e Send output to the system text editor",
" -x Send output as CSV to a spreadsheet (same as \".excel\")",
/* Note that .open is (partially) available in WASM builds but is
** currently only intended to be fed the names of already-existing
** binary db imports, so is "undocumented." Passing it an unknown
** filename will lead to an exit(), so we don't want WASM-side
** callers using it. */
".open ?OPTIONS? ?FILE? Close existing database and reopen FILE",
" Options:",
" --append Use appendvfs to append database to the end of FILE",
@@ -4407,12 +4412,14 @@ static const char *(azHelp[]) = {
" --nofollow Do not follow symbolic links",
" --readonly Open FILE readonly",
" --zip FILE is a ZIP archive",
#ifndef SQLITE_SHELL_WASM_MODE
".output ?FILE? Send output to FILE or stdout if FILE is omitted",
" If FILE begins with '|' then open it as a pipe.",
" Options:",
" --bom Prefix output with a UTF8 byte-order mark",
" -e Send output to the system text editor",
" -x Send output as CSV to a spreadsheet",
#endif
".parameter CMD ... Manage SQL parameter bindings",
" clear Erase all bindings",
" init Initialize the TEMP table that holds bindings",
@@ -9574,6 +9581,7 @@ static int do_meta_command(char *zLine, ShellState *p){
/* Check for command-line arguments */
for(iName=1; iName<nArg; iName++){
const char *z = azArg[iName];
#ifndef SQLITE_SHELL_WASM_MODE
if( optionMatch(z,"new") ){
newFlag = 1;
#ifdef SQLITE_HAVE_ZLIB
@@ -9594,7 +9602,9 @@ static int do_meta_command(char *zLine, ShellState *p){
}else if( optionMatch(z, "maxsize") && iName+1<nArg ){
p->szMax = integerValue(azArg[++iName]);
#endif /* SQLITE_OMIT_DESERIALIZE */
}else if( z[0]=='-' ){
}else
#endif /* !SQLITE_SHELL_WASM_MODE */
if( z[0]=='-' ){
utf8_printf(stderr, "unknown option: %s\n", z);
rc = 1;
goto meta_command_exit;
@@ -9621,6 +9631,7 @@ static int do_meta_command(char *zLine, ShellState *p){
/* If a filename is specified, try to open it first */
if( zFN || p->openMode==SHELL_OPEN_HEXDB ){
if( newFlag && zFN && !p->bSafeMode ) shellDeleteFile(zFN);
#ifndef SQLITE_SHELL_WASM_MODE
if( p->bSafeMode
&& p->openMode!=SHELL_OPEN_HEXDB
&& zFN
@@ -9628,6 +9639,9 @@ static int do_meta_command(char *zLine, ShellState *p){
){
failIfSafeMode(p, "cannot open disk-based database files in safe mode");
}
#else
/* WASM mode has its own sandboxed pseudo-filesystem. */
#endif
if( zFN ){
zNewFilename = sqlite3_mprintf("%s", zFN);
shell_check_oom(zNewFilename);