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exec2.c
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exec2.c
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#define _CRT_SECURE_NO_WARNINGS
#include "pch.h"
#include "winshell2.h"
#include "varlib.h"
#include <stdio.h>
#include <Windows.h>
int main()
/*
BOOL CreateProcessW(
LPCWSTR lpApplicationName, // 如果是非NULL值并且要使用lpCommandLine的话，一定要写全路径，不能只写一个cmd.exe
LPWSTR lpCommandLine, // 指令参数
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCWSTR lpCurrentDirectory,
LPSTARTUPINFOW lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation
);
DWORD WaitForSingleObject(
HANDLE hHandle,
DWORD dwMilliseconds
);
*/
{
wchar_t cmd[] = L"C:\\Windows\\System32\\cmd.exe";
#ifdef DEBUG
// 打开文件
FILE* fp;
// errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\test.sh", "r");
// errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\iftest.sh", "r");
// errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\multiif.sh", "r");
// errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\fail-if.sh", "r");
// errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\lessfi.sh", "r");
// errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\plusfi.sh", "r");
// errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\var_assign.sh", "r");
errno_t err = fopen_s(&fp, "C:\\Users\\12176\\Desktop\\操作系统课设\\winshell\\loop.sh", "r");
if (fp == NULL || err != 0) {
printf_s("Failed to open file!");
return -1;
}
int i = 0;
while (TRUE) {
// char newstr[MAXCMDLEN];
char* buf = readline(fp);
if (buf == NULL) {
if_check(buf);
break;
}
// 尝试进行变量的赋值
// 防止echo a=$a这样的代码出现，如果等号前有空格，那么一定不是赋值语句
if ((strncmp(buf, "if ", 3) != 0) && (strncmp(buf, "else ", 5) != 0) &&
(strncmp(buf, "while ", 6) != 0) && (strncmp(buf, "elif ", 5) != 0) && (check_inside(buf) != 1)) {
int assigned = value_assign(buf);
if (assigned == 0)
continue;
}
//if (eval(buf, newstr, MAXCMDLEN) == -1)
//{
// fprintf(stderr, "line too long\n");
// return 1;
//}
//printf("%s", newstr);
if (*buf == '\0') // 空行的情况
continue;
char newstr[MAXCMDLEN];
// while
if (strncmp(buf, "while ", 6) == 0) {
char** tmplist = splitline(buf);
strcpy(buf, buf + 6);
set_loop_condition(buf);
char** lines = read_loop_block(fp);
int ret = execute_loop(lines);
if (ret == 1)
continue;
}
if (eval(buf, newstr, MAXCMDLEN) == -1) {
fprintf(stderr, "line too long\n");
return 1;
}
// printf("%s", newstr);
char** args = splitline(newstr);
if (if_check(newstr) == OK_EXEC)
process(newstr); // 执行语句
/*
// 特殊字符检查
// 若当前读到了if，开始进入条件语句处理程序
// 读到if后暂不执行命令，将向后一直读到fi再开始执行，若fi未出现，则抛出错误，
if (strcmp(args[0], "if") {
read_if_block(fp, args); // 将当前已经有的句子也读进来
process_if_block();
}
else if(strcmp(args[0], "for"
|| strcmp(args[0], "while")
|| strcmp(args[0], "until"))
{
read_loop_block(fp, );
process_loop_block(); // 用不用再分一下while/for/until啥的
}
else {
}
// check_args(); // 检查当前的命令是否为if等特殊命令
process_args()
*/
// process(args);
/* 方便起见，这一部分在process.c中封装成了函数供其他程序调用
wchar_t* arg = generate_cmd(buf);
STARTUPINFO si = { sizeof(si) };
PROCESS_INFORMATION pi;
BOOL OK = CreateProcessW(cmd, arg, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi); // 运行有参数命令
//BOOL OK = CreateProcessW(NULL, cmd, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi); // 运行无参数命令，这行只是为了做笔记，其实这个程序根本用不到
if (OK) { // 进程创建成功
printf("Applicaiton is running\n");
printf("PID = %d\n", pi.dwProcessId);
// 等待进程结束，等待时间为永久
DWORD status = WaitForSingleObject(pi.hProcess, INFINITE);
// 检查进程结束的状态码
DWORD dwErr;
GetExitCodeProcess(pi.hProcess, &dwErr);
if (dwErr)
printf("Failed to execute command, exit code %d\n", dwErr);
// printf_s("Exit code: %d\n", dwErr); // 错误时输出为1
if (status == WAIT_OBJECT_0) {
printf("PID = %d is closed!\n\n", pi.dwProcessId);
}
free(buf);
free(arg);
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
}
else {
printf("Application NOT running! \t Error code %d", GetLastError());
}*/
/*
char** args = splitline(buf);
for (int i = 0; args[i] != NULL; i++) {
printf_s("arg[%d]%s\n", i, args[i]);
}
//printf_s("arg[%d]%s\n", i, args[i]);
freelist(args);*/
}
// if_check(NULL);
/* 这部分本来就没用
for (int i = 0; args[i] != NULL; i++) {
printf_s("arg[%d]%s\n", i, args[i]);
}*/
//test end
//printf_s(buf);
//printf_s(buf2);
//wchar_t arg[] = L" /C dir /W"; // cmd /K，保留窗口；cmd /C，关闭窗口
//wchar_t arg[] = generate_cmd(args);
/*
STARTUPINFO si = { sizeof(si) };
PROCESS_INFORMATION pi;
BOOL OK = CreateProcessW(cmd, arg, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi); // 运行有参数命令
//BOOL OK = CreateProcessW(NULL, cmd, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi); // 运行无参数命令，这行只是为了做笔记，其实这个程序根本用不到
if (OK) { // 进程创建成功
printf("Applicaiton is running\n");
printf("PID = %d\n", pi.dwProcessId);
// 等待进程结束，等待时间为永久
DWORD status = WaitForSingleObject(pi.hProcess, INFINITE);
if (status == WAIT_OBJECT_0) {
printf("PID = %d is closed!\n", pi.dwProcessId);
}
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
}
else {
printf("Application NOT running! \t Error code %d", GetLastError());
}*/
#endif
}
wchar_t* char2wchar(char* text, size_t* converted) {
const size_t size = strlen(text) + 1;
wchar_t* wtext = (wchar_t*)malloc_s(strlen(text) * sizeof(wchar_t));
mbstowcs_s(converted, wtext, size, text, _TRUNCATE);
return wtext;
}
// 用来生成可以被winapi - CreateProcessW所接收的字符串，方便通过cmd调用
wchar_t* generate_cmd(char* str) {
size_t converted = 0;
wchar_t* cmdstr = char2wchar(str, &converted);
wchar_t* cmdall = (wchar_t*)malloc_s((3 + converted) * sizeof(wchar_t));
memset(cmdall, 0, (3 + converted) * sizeof(wchar_t));
errno_t err = 0;
//wchar_t* cmdall = L"/C ";
err = wcscat_s(cmdall, 3 + converted, L"/C ");
err = wcscat_s(cmdall, 3 + converted, cmdstr);
if (err != 0) {
printf_s("Failed to generate command line!");
return NULL;
}
return cmdall;
}