当我尝试使用节点js安装Chrome驱动程序// A5.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <cmath>
#include <iostream>
#include <string>
#include <fstream>
#include <vector>
#include <array>
using namespace std;
int main()
{
struct Pixel {
int Red;
int Green;
int Blue;
};
vector <vector< Pixel> > image;
string fileType;
int height{}, width{}, maxColor{};
string p3;
cout << "Enter the name of the file:";
cin >> fileType;
string fileTypeActual = fileType + ".ppm";
ifstream myImage(fileTypeActual);
if (myImage.fail()) {
cerr << "Fail";
return 1;
}
while (!myImage.eof()) {
string p3;
myImage >> p3 >> width >> height >> maxColor;
int i, j;
for (i = 0; i < height; i++) {
vector<Pixel>rowofPixels;
for (j = 0; j < width; j++) {
Pixel p;
myImage >> p.Red;
myImage >> p.Green;
myImage >> p.Blue;
rowofPixels.push_back(p);
}
image.push_back(rowofPixels);
}
};
myImage.close();
int userChoice;
cout << "Would you like to invert the colors or convert to greyscale? Type 1 for greyscale and 2 for color inversion";
cin >> userChoice;
if (userChoice == 1) {
//begin greyscale conversion
string fileGray;
fileGray = fileType + "_grayscale.ppm";
ofstream imageOut(fileGray);
if (imageOut.fail()) {
cerr << "Fail";
return 1;
}
struct greyPixel {
double redGrey;
double blueGrey;
double greenGrey;
};
vector <vector< greyPixel > > greyScale;
//gray = 0.2989 * Red + 0.5870 * Green + 0.1140 * Blue
for (int i = 0; i < height; i++) {
vector<greyPixel>rowofGrey;
for (int j = 0; j < width; j++) {
int pixelRed = ((image.at(i)).at(j)).Red;
int pixelBlue = ((image.at(i)).at(j)).Blue;
int pixelGreen = ((image.at(i)).at(j)).Green;
greyPixel g;
g.redGrey = 0.2989 * pixelRed + 0.5870 * pixelGreen + 0.1140 * pixelBlue;
g.blueGrey = 0.2989 * pixelRed + 0.5870 * pixelGreen + 0.1140 * pixelBlue;
g.greenGrey = 0.2989 * pixelRed + 0.5870 * pixelGreen + 0.1140 * pixelBlue;
rowofGrey.push_back(g);
}
greyScale.push_back(rowofGrey);
}
imageOut.close();
}
else if (userChoice == 2) {
//begin color inverson
string fileInvert;
fileInvert = fileType + "_inverted.ppm";
ofstream imageInv(fileInvert);
if (imageInv.fail()) {
cerr << "Fail";
return 1;
}
struct invertPixel {
int redInvert;
int blueInvert;
int greenInvert;
};
vector <vector< invertPixel > > invert;
for (int i = 0; i < height; i++) {
vector<invertPixel>rowofInvert;
for (int j = 0; j < width; j++) {
int pixelRed = ((image.at(i)).at(j)).Red;
int pixelBlue = ((image.at(i)).at(j)).Blue;
int pixelGreen = ((image.at(i)).at(j)).Green;
invertPixel inv;
inv.blueInvert = maxColor - pixelBlue;
inv.greenInvert = maxColor - pixelGreen;
inv.redInvert = maxColor - pixelRed;
rowofInvert.push_back(inv);
}
invert.push_back(rowofInvert);
}
imageInv.close();
}
return 0;
}
时，出现此错误：npm install chromedriver --chromedriver-force-download。
我已申请chromedriver installation failed error eacces permission denied mkdir的完全许可，但仍收到此错误，有人可以帮助我为什么得到此错误吗？
我使用了以下命令：
777答案 0 :(得分：1)
尝试使用sudo关键字
1)sudo npm i chromedriver
2) Force Download :sudo npm install chromedriver --chromedriver-force-download
答案 1 :(得分：1)
这个在 Ubuntu 20.04 上对我有用
sudo npm -g install chromedriver --unsafe-perm=true --allow-root