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