59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
#include <stdio.h>
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#include <libmaxsi/platform.h>
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#include <libmaxsi/process.h>
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#include <libmaxsi/sortix-keyboard.h>
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#include <libmaxsi/string.h>
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using namespace Maxsi;
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void command()
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{
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printf("root@sortix / # ");
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const size_t commandsize = 128;
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char command[commandsize + 1];
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size_t commandused = 0;
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while (true)
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{
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unsigned method = System::Keyboard::POLL;
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uint32_t codepoint = System::Keyboard::ReceiveKeystroke(method);
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if ( codepoint == 0 ) { continue; }
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if ( codepoint & Maxsi::Keyboard::DEPRESSED ) { continue; }
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if ( codepoint >= 0x80 ) { continue; }
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if ( codepoint == '\b' )
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{
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if ( 0 < commandused ) { printf("\b"); commandused--; }
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continue;
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}
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if ( commandsize <= commandused && codepoint != '\n' ) { continue; }
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char msg[2]; msg[0] = codepoint; msg[1] = '\0';
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printf(msg);
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if ( codepoint == '\n' ) { command[commandused] = '\0'; break; }
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command[commandused++] = codepoint;
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}
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if ( command[0] == '\0' ) { return; }
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if ( String::Compare(command, "$$") == 0 ) { printf("%u\n", Process::GetPID()); return; }
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if ( String::Compare(command, "$PPID") == 0 ) { printf("%u\n", Process::GetParentPID()); return; }
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// Replace the current process with another process image.
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Process::Execute(command, 0, NULL);
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// This is clever. This only happens if the program didn't change.
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printf("%s: command not found\n", command);
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}
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int main(int argc, char* argv[])
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{
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while ( true ) { command(); }
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}
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