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Add the "changeset" command-line utility for getting an ASCII dump of

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change sets.

FossilOrigin-Name: 55bb3544a6b474c04853270067a35ca4b0079f52
This commit is contained in:
drh
2014-08-18 17:56:31 +00:00
parent e62296100f
commit 3a67b0453e
5 changed files with 376 additions and 11 deletions
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49
src/shell.c
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@@ -3169,6 +3169,7 @@ static int do_meta_command(char *zLine, ShellState *p){
int nCmd = nArg - 1;
int i;
if( nArg<=1 ) goto session_syntax_error;
open_db(p, 0);
if( nArg>=3 ){
for(iSes=0; iSes<p->nSession; iSes++){
if( strcmp(p->aSession[iSes].zName, azArg[1])==0 ) break;
@@ -3183,6 +3184,53 @@ static int do_meta_command(char *zLine, ShellState *p){
}
}
/* .session attach TABLE
** Invoke the sqlite3session_attach() interface to attach a particular
** table so that it is never filtered.
*/
if( strcmp(azCmd[0],"attach")==0 ){
if( nCmd!=2 ) goto session_syntax_error;
if( pSession->p==0 ){
session_not_open:
fprintf(stderr, "ERROR: No sessions are open\n");
}else{
rc = sqlite3session_attach(pSession->p, azCmd[1]);
if( rc ){
fprintf(stderr, "ERROR: sqlite3session_attach() returns %d\n", rc);
rc = 0;
}
}
}else
/* .session changeset FILE
** .session patchset FILE
** Write a changeset or patchset into a file. The file is overwritten.
*/
if( strcmp(azCmd[0],"changeset")==0 || strcmp(azCmd[0],"patchset")==0 ){
FILE *out = 0;
if( nCmd!=2 ) goto session_syntax_error;
if( pSession->p==0 ) goto session_not_open;
out = fopen(azCmd[1], "wb");
if( out==0 ){
fprintf(stderr, "ERROR: cannot open \"%s\" for writing\n", azCmd[1]);
}else{
int szChng;
void *pChng;
if( azCmd[0][0]=='c' ){
sqlite3session_changeset(pSession->p, &szChng, &pChng);
}else{
sqlite3session_patchset(pSession->p, &szChng, &pChng);
}
if( pChng
&& fwrite(pChng, szChng, 1, out)!=1 ){
fprintf(stderr, "ERROR: Failed to write entire %d-byte output\n",
szChng);
}
sqlite3_free(pChng);
fclose(out);
}
}else
/* .session close
** Close the identified session
*/
@@ -3225,6 +3273,7 @@ static int do_meta_command(char *zLine, ShellState *p){
rc = sqlite3session_create(p->db, azCmd[1], &pSession->p);
if( rc ){
fprintf(stderr, "Cannot open session: error code=%d\n", rc);
rc = 0;
goto meta_command_exit;
}
p->nSession++;