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Merge pull request #33 from smasher816/devel

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Add CLI History
This commit is contained in:
Jacob Alexander 2015-04-02 23:55:51 -07:00
commit 5523988d04
2 changed files with 114 additions and 4 deletions
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104
Debug/cli/cli.c
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@ -72,6 +72,11 @@ inline void CLI_init()
// Reset the Line Buffer
CLILineBufferCurrent = 0;
// History starts empty
CLIHistoryHead = 0;
CLIHistoryCurrent = 0;
CLIHistoryTail = 0;
// Set prompt
prompt();
@ -154,6 +159,22 @@ void CLI_process()
// Process the current line buffer
CLI_commandLookup();
// Add the command to the history
cli_saveHistory( CLILineBuffer );
// Keep the array circular, discarding the older entries
if ( CLIHistoryTail < CLIHistoryHead )
CLIHistoryHead = ( CLIHistoryHead + 1 ) % CLIMaxHistorySize;
CLIHistoryTail++;
if ( CLIHistoryTail == CLIMaxHistorySize )
{
CLIHistoryTail = 0;
CLIHistoryHead = 1;
}
CLIHistoryCurrent = CLIHistoryTail; // 'Up' starts at the last item
cli_saveHistory( NULL ); // delete the old temp buffer
// Reset the buffer
CLILineBufferCurrent = 0;
@ -175,9 +196,38 @@ void CLI_process()
// Doesn't look like it will happen *that* often, so not handling it for now -HaaTa
return;
case 0x1B: // Esc
// Check for escape sequence
// TODO
case 0x1B: // Esc / Escape codes
// Check for other escape sequence
// \e[ is an escape code in vt100 compatable terminals
if ( CLILineBufferCurrent >= prev_buf_pos + 3
&& CLILineBuffer[ prev_buf_pos ] == 0x1B
&& CLILineBuffer[ prev_buf_pos + 1] == 0x5B )
{
// Arrow Keys: A (0x41) = Up, B (0x42) = Down, C (0x43) = Right, D (0x44) = Left
if ( CLILineBuffer[ prev_buf_pos + 2 ] == 0x41 ) // Hist prev
{
if ( CLIHistoryCurrent == CLIHistoryTail )
{
// Is first time pressing arrow. Save the current buffer
CLILineBuffer[ prev_buf_pos ] = '\0';
cli_saveHistory( CLILineBuffer );
}
// Grab the previus item from the history if there is one
if ( RING_PREV( CLIHistoryCurrent ) != RING_PREV( CLIHistoryHead ) )
CLIHistoryCurrent = RING_PREV( CLIHistoryCurrent );
cli_retreiveHistory( CLIHistoryCurrent );
}
if ( CLILineBuffer[ prev_buf_pos + 2 ] == 0x42 ) // Hist next
{
// Grab the next item from the history if it exists
if ( RING_NEXT( CLIHistoryCurrent ) != RING_NEXT( CLIHistoryTail ) )
CLIHistoryCurrent = RING_NEXT( CLIHistoryCurrent );
cli_retreiveHistory( CLIHistoryCurrent );
}
}
return;
case 0x08:
@ -348,6 +398,54 @@ inline void CLI_tabCompletion()
}
}
inline int CLI_wrap( int kX, int const kLowerBound, int const kUpperBound )
{
int range_size = kUpperBound - kLowerBound + 1;
if ( kX < kLowerBound )
kX += range_size * ((kLowerBound - kX) / range_size + 1);
return kLowerBound + (kX - kLowerBound) % range_size;
}
inline void CLI_saveHistory( char *buff )
{
if ( buff == NULL )
{
//clear the item
CLIHistoryBuffer[ CLIHistoryTail ][ 0 ] = '\0';
return;
}
// Copy the line to the history
int i;
for (i = 0; i < CLILineBufferCurrent; i++)
{
CLIHistoryBuffer[ CLIHistoryTail ][ i ] = CLILineBuffer[ i ];
}
}
void CLI_retreiveHistory( int index )
{
char *histMatch = CLIHistoryBuffer[ index ];
// Reset the buffer
CLILineBufferCurrent = 0;
// Reprint the prompt (automatically clears the line)
prompt();
// Display the command
dPrint( histMatch );
// There are no index counts, so just copy the whole string to the input buffe
CLILineBufferCurrent = 0;
while ( *histMatch != '\0' )
{
CLILineBuffer[ CLILineBufferCurrent++ ] = *histMatch++;
}
}
// ----- CLI Command Functions -----

14
Debug/cli/cli.h
View File

@ -36,7 +36,7 @@
#define CLILineBufferMaxSize 100
#define CLIMaxDictionaries 10
#define CLIEntryTabAlign 13
#define CLIMaxHistorySize 10
// ----- Macros -----
@ -67,6 +67,8 @@
const char name##CLIDict_DescEntry[] = description;
#endif
#define RING_PREV(i) wrap(i-1,0,CLIMaxHistorySize-1)
#define RING_NEXT(i) wrap(i+1,0,CLIMaxHistorySize-1)
// ----- Structs -----
@ -90,6 +92,13 @@ CLIDictItem *CLIDict [CLIMaxDictionaries];
char* CLIDictNames[CLIMaxDictionaries];
uint8_t CLIDictionariesUsed;
// History
char CLIHistoryBuffer[CLIMaxHistorySize][CLILineBufferMaxSize];
uint8_t CLIHistoryHead;
uint8_t CLIHistoryTail;
int8_t CLIHistoryCurrent;
// Debug
uint8_t CLILEDState;
uint8_t CLIHexDebugMode;
@ -102,8 +111,11 @@ void CLI_process();
void CLI_registerDictionary( const CLIDictItem *cmdDict, const char* dictName );
void CLI_argumentIsolation( char* string, char** first, char** second );
int CLI_wrap( int x, int low, int high );
void CLI_commandLookup();
void CLI_tabCompletion();
void CLI_saveHistory( char *buff );
void CLI_retreiveHistory( int index );
// CLI Command Functions
void cliFunc_arch ( char* args );