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Update command "history".

This commit is contained in:
Alan Mishchenko 2026-02-18 12:19:32 -08:00
parent 6c8b2cfa3b
commit c7ea67b7df
1 changed files with 50 additions and 10 deletions
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60
src/base/cmd/cmd.c
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@ -441,6 +441,7 @@ int CmdCommandHistory( Abc_Frame_t * pAbc, int argc, char **argv )
char * pName, * pStr = NULL;
int i, c;
int nPrints = 20;
int nPrinted = 0;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
{
@ -452,29 +453,68 @@ int CmdCommandHistory( Abc_Frame_t * pAbc, int argc, char **argv )
goto usage;
}
}
if ( argc > globalUtilOptind + 1 )
if ( argc > globalUtilOptind + 2 )
goto usage;
// get the number from the command line
pStr = argc == globalUtilOptind+1 ? argv[globalUtilOptind] : NULL;
if ( pStr && pStr[0] >= '1' && pStr[0] <= '9' )
nPrints = atoi(pStr), pStr = NULL;
// parse arguments: can be [substring] [number] in either order
if ( argc == globalUtilOptind + 1 )
{
// one argument: either number or substring
pStr = argv[globalUtilOptind];
if ( pStr && pStr[0] >= '1' && pStr[0] <= '9' )
{
nPrints = atoi(pStr);
pStr = NULL;
}
}
else if ( argc == globalUtilOptind + 2 )
{
// two arguments: substring and number
char * arg1 = argv[globalUtilOptind];
char * arg2 = argv[globalUtilOptind + 1];
// Try to parse second argument as number
if ( arg2[0] >= '1' && arg2[0] <= '9' )
{
pStr = arg1;
nPrints = atoi(arg2);
}
// Try to parse first argument as number
else if ( arg1[0] >= '1' && arg1[0] <= '9' )
{
nPrints = atoi(arg1);
pStr = arg2;
}
else
{
// Neither is a number, error
goto usage;
}
}
// print the commands
if ( pStr == NULL ) {
// No search string, show last nPrints entries
Vec_PtrForEachEntryStart( char *, pAbc->aHistory, pName, i, Abc_MaxInt(0, Vec_PtrSize(pAbc->aHistory)-nPrints) )
fprintf( pAbc->Out, "%2d : %s\n", Vec_PtrSize(pAbc->aHistory)-i, pName );
fprintf( pAbc->Out, "%4d : %s\n", Vec_PtrSize(pAbc->aHistory)-i, pName );
}
else {
// Search string provided, show up to nPrints matching entries
Vec_PtrForEachEntry( char *, pAbc->aHistory, pName, i )
if ( strstr(pName, pStr) )
fprintf( pAbc->Out, "%2d : %s\n", Vec_PtrSize(pAbc->aHistory)-i, pName );
{
fprintf( pAbc->Out, "%4d : %s\n", Vec_PtrSize(pAbc->aHistory)-i, pName );
if ( ++nPrinted >= nPrints )
break;
}
}
return 0;
usage:
fprintf( pAbc->Err, "usage: history [-h] <num>\n" );
fprintf( pAbc->Err, "usage: history [-h] [substring] [num]\n" );
fprintf( pAbc->Err, "\t lists the last commands entered on the command line\n" );
fprintf( pAbc->Err, "\t-h : print the command usage\n" );
fprintf( pAbc->Err, "\t<num> : the maximum number of entries to show [default = %d]\n", nPrints );
fprintf( pAbc->Err, "\t-h : print the command usage\n" );
fprintf( pAbc->Err, "\tsubstring : search for commands containing this substring\n" );
fprintf( pAbc->Err, "\tnum : the maximum number of entries to show [default = %d]\n", nPrints );
return ( 1 );
}