X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Usermode%2FApplications%2FCLIShell_src%2Fmain.c;h=7f4ba01ccfe5d91e1ba2ff7d06517cc60838eac2;hb=7c43aea724fea42bc297f47f9c180a5080c6fd17;hp=89bfe0d1af7428b0118c369f32857bd37d5f8d2a;hpb=4d45d15216040b78b91af7469a796797b6b03c4f;p=tpg%2Facess2.git diff --git a/Usermode/Applications/CLIShell_src/main.c b/Usermode/Applications/CLIShell_src/main.c index 89bfe0d1..7f4ba01c 100644 --- a/Usermode/Applications/CLIShell_src/main.c +++ b/Usermode/Applications/CLIShell_src/main.c @@ -7,18 +7,14 @@ #include #include #include "header.h" - -#if USE_READLINE -# include "readline.h" -#endif +#include #define _stdin 0 #define _stdout 1 #define _stderr 2 // ==== PROTOTYPES ==== -char *ReadCommandLine(int *Length); -void Parse_Args(char *str, char **dest); + int Parse_Args(const char *str, char **dest); void CallCommand(char **Args); void Command_Logout(int argc, char **argv); void Command_Clear(int argc, char **argv); @@ -56,11 +52,7 @@ int main(int argc, char *argv[], char **envp) int length = 0; int i; int iArgCount = 0; - #if !USE_READLINE - int bCached = 1; - #else tReadline *readline_state = Readline_Init(1); - #endif gasEnvironment = envp; @@ -81,46 +73,17 @@ int main(int argc, char *argv[], char **envp) for(;;) { // Free last command & arguments - if(saArgs[0]) free(saArgs); - #if !USE_READLINE - if(!bCached) free(sCommandStr); - bCached = 0; - #endif + if(saArgs[0]) free(saArgs[0]); printf("%s$ ", gsCurrentDirectory); // Read Command line - #if USE_READLINE sCommandStr = Readline( readline_state ); printf("\n"); length = strlen(sCommandStr); - #else - sCommandStr = ReadCommandLine( &length ); - - if(!sCommandStr) { - printf("PANIC: Out of heap space\n"); - return -1; - } - - // Check if the command should be cached - if(gasCommandHistory == NULL || strcmp(sCommandStr, gasCommandHistory[giLastCommand]) != 0) - { - if(giLastCommand >= giCommandSpace) { - giCommandSpace += 12; - gasCommandHistory = realloc(gasCommandHistory, giCommandSpace*sizeof(char*)); - } - giLastCommand ++; - gasCommandHistory[ giLastCommand ] = sCommandStr; - bCached = 1; - } - #endif // Parse Command Line into arguments - Parse_Args(sCommandStr, saArgs); - - // Count Arguments - iArgCount = 0; - while(saArgs[iArgCount]) iArgCount++; + iArgCount = Parse_Args(sCommandStr, saArgs); // Silently Ignore all empty commands if(saArgs[1][0] == '\0') continue; @@ -139,157 +102,15 @@ int main(int argc, char *argv[], char **envp) // Shall we? CallCommand( &saArgs[1] ); - #if USE_READLINE free( sCommandStr ); - #endif } } -#if !USE_READLINE /** - * \fn char *ReadCommandLine(int *Length) - * \brief Read from the command line - */ -char *ReadCommandLine(int *Length) -{ - char *ret; - int len, pos, space = 1023; - char ch; - #if 0 - int scrollbackPos = giLastCommand; - #endif - - // Preset Variables - ret = malloc( space+1 ); - if(!ret) return NULL; - len = 0; pos = 0; - - // Read In Command Line - do { - ch = getchar(); // Read Character from stdin (read is a blocking call) - if(ch == '\n') break; - - switch(ch) - { - // Control characters - case '\x1B': - ch = getchar(); // Read control character - switch(ch) - { - //case 'D': if(pos) pos--; break; - //case 'C': if(pos 0 ) break; - - free(ret); - ret = strdup( gasCommandHistory[--scrollbackPos] ); - - len = strlen(ret); - while(pos--) printf("\x1B[D"); - write(_stdout, len, ret); pos = len; - while(pos++ < oldLen) write(_stdout, 1, " "); - } - break; - case 'B': // Down - { - int oldLen = len; - if( scrollbackPos < giLastCommand-1 ) break; - - free(ret); - ret = strdup( gasCommandHistory[++scrollbackPos] ); - - len = strlen(ret); - while(pos--) write(_stdout, 3, "\x1B[D"); - write(_stdout, len, ret); pos = len; - while(pos++ < oldLen) write(_stdout, 1, " "); - } - break; - #endif - case 'D': // Left - if(pos == 0) break; - pos --; - printf("\x1B[D"); - break; - case 'C': // Right - if(pos == len) break; - pos++; - printf("\x1B[C"); - break; - } - } - break; - - // Backspace - case '\b': - if(len <= 0) break; // Protect against underflows - putchar(ch); - if(pos == len) { // Simple case of end of string - len --; - pos--; - } - else { - printf("%.*s ", len-pos, &ret[pos]); // Move Text - printf("\x1B[%iD", len-pos+1); - // Alter Buffer - memmove(&ret[pos-1], &ret[pos], len-pos); - pos --; - len --; - } - break; - - // Tab - case '\t': - //TODO: Implement Tab-Completion - //Currently just ignore tabs - break; - - default: - // Expand Buffer - if(len+1 > space) { - space += 256; - ret = realloc(ret, space+1); - if(!ret) return NULL; - } - - // Editing inside the buffer - if(pos != len) { - putchar(ch); // Print new character - printf("%.*s", len-pos, &ret[pos]); // Move Text - printf("\x1B[%iD", len-pos); - memmove( &ret[pos+1], &ret[pos], len-pos ); - } - else { - putchar(ch); - } - ret[pos++] = ch; - len ++; - break; - } - } while(ch != '\n'); - - // Cap String - ret[len] = '\0'; - printf("\n"); - - // Return length - if(Length) *Length = len; - - return ret; -} -#endif - -/** - * \fn void Parse_Args(char *str, char **dest) + * \fn int Parse_Args(const char *str, char **dest) * \brief Parse a string into an argument array */ -void Parse_Args(char *str, char **dest) +int Parse_Args(const char *str, char **dest) { int i = 1; char *buf = malloc( strlen(str) + 1 ); @@ -297,7 +118,7 @@ void Parse_Args(char *str, char **dest) if(buf == NULL) { dest[0] = NULL; printf("Parse_Args: Out of heap space!\n"); - return ; + return 0; } strcpy(buf, str); @@ -324,10 +145,8 @@ void Parse_Args(char *str, char **dest) if(*buf == '\0') break; } dest[i] = NULL; - if(i == 1) { - free(buf); - dest[0] = NULL; - } + + return i; } /**