146 lines
4.4 KiB
C
146 lines
4.4 KiB
C
#include "libc.h"
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#include "help.h"
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#include "clear.h"
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#include "time.h"
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#include "shell.h"
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#include "inforeg.h"
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#include "printmem.h"
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#include "excDiv.h"
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#include "excOP.h"
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#include "quadratic.h"
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#include "cpu_id.h"
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#include "change.h"
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#define SIZE 100
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#define MAX_ARGS 5
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#define COLS 40
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#define ROWS 25
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const int len = 8;
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char *commands_void[] = {"help", "time", "inforeg", "excdiv", "excop", "clear", "cpufeatures", "change"};
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void (*func []) (char *, int *) = {help, time, inforeg, excdiv, excop, clear, cpufeatures, change};
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void substractLine(char * window, int * offset) {
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for (int i = 0; i < ROWS - 1; i++) {
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for (int j = 0; j < COLS; j++) {
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window[i * COLS + j] = window[(i + 1) * COLS + j];
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}
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}
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for (int i = 0; i < COLS; i++) {
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window[(ROWS - 1) * COLS + i - 1] = ' ';
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window[ROWS * COLS] = 0;
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}
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*offset = (ROWS - 1) * COLS;
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}
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void addText(char * buffer, char * window, int * offset) {
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while (*buffer != 0) {
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if (*offset == ROWS * COLS - 1) substractLine(window, offset);
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window[(*offset)++] = *buffer++;
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}
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}
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void printWindow(char * window) {
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printString(window);
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}
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void scanfNoPrint(char * buffer, int maxSize, char * window, int * offset) {
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char c;
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int i = 0;
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while ((c = getChar()) != '\n' && i < maxSize - 1) {
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if (c != -1) {
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if (c == '\v')
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sys_switchContext();
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else if (c == '\b' && i > 0) {
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buffer[--i] = ' ';
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window[--(*offset)] = ' ';
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printWindow(window);
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}
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else if (c != 0 && c != '\b') {
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buffer[i++] = c;
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if (*offset == ROWS * COLS - 1) substractLine(window, offset);
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window[(*offset)++] = c;
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printWindow(window);
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}
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}
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}
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buffer[i] = '\0';
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if (*offset == ROWS * COLS - 1) substractLine(window, offset);
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window[*offset] = ' ';
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}
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void clearWindow(char * window, int * offset) {
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for (int i = 0; i <= ROWS * COLS; i++) {
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window[i] = ' ';
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}
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window[ROWS * COLS] = 0;
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*offset = (ROWS - 1) * COLS;
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printWindow(window);
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}
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void shell() {
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char window[ROWS * COLS + 1] = {[0 ... ROWS * COLS - 1] = ' ', 0};
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int offset = (ROWS - 1) * COLS;
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printWindow(window);
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while (1) {
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int comm_flag = 0;
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addText("$> ", window, &offset);
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printWindow(window);
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char buffer[SIZE] = {0};
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scanfNoPrint(buffer, SIZE, window, &offset);
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substractLine(window, &offset);
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char* tokens[SIZE] = {0};
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tokens[0] = strstrip(buffer, ' ');
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for (int i = 1; i < MAX_ARGS; i++) {
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tokens[i] = strtok(tokens[i - 1], ' ');
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}
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for (int i = 0; i < len; i++) {
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if (!strcmp(tokens[0], commands_void[i])) {
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if (*tokens[1] != 0)
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incorrect_arg(tokens[0], window, &offset);
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else
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(*func[i])(window, &offset);
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comm_flag = 1;
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}
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}
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if (!strcmp(tokens[0], "quadratic")) {
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if (*tokens[4] != 0 || *tokens[3] == 0)
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incorrect_arg(tokens[0], window, &offset);
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else if (!isFloat(tokens[1]) || !isFloat(tokens[2]) || !isFloat(tokens[3]))
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incorrect_arg(tokens[0], window, &offset);
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else
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quadratic(window, &offset, atof(tokens[1]), atof(tokens[2]), atof(tokens[3]));
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comm_flag = 1;
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}
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if (!strcmp(tokens[0], "printmem")) {
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if (*tokens[2] != 0 || *tokens[1] == 0)
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incorrect_arg(tokens[0], window, &offset);
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else {
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int length = strlen(tokens[1]);
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printmem(window, &offset, atoi(tokens[1], length));
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}
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comm_flag = 1;
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}
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if (!comm_flag) {
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if (*tokens[0] != 0)
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incorrect_comm(tokens[0], window, &offset);
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}
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}
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}
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void incorrect_comm(char * buffer, char* window, int * offset) {
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addText(buffer, window, offset);
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addText(" is not a BottlerShell command", window, offset);
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printWindow(window);
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substractLine(window, offset);
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}
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void incorrect_arg(char * command, char* window, int * offset) {
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addText("Incorrect arguments for command ", window, offset);
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addText(command, window, offset);
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printWindow(window);
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substractLine(window, offset);
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} |