feat: add lab8

Author: AxelHowe

.github/workflows/lab8.yml

@@ -0,0 +1,28 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: lab8
+
+on:
+  push:
+    paths:
+      - 'lab8/**'
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    
+    - uses: actions/setup-go@v4
+      with:
+        go-version-file: 'lab8/go.mod'
+        cache: false
+
+    - name: Run
+      working-directory: 'lab8'
+      run: |
+        go mod tidy
+        python validate.py

lab8/lab8.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"flag"
+	"github.com/gocolly/colly"
+)
+
+func main() {
+
+	flag.Parse()
+
+	c := colly.NewCollector()
+
+	c.OnHTML("???", func(e *colly.HTMLElement) {
+	})
+}

lab8/validate.py

@@ -0,0 +1,110 @@
+
+import difflib
+import os
+import sys
+
+testcase = [
+    (
+        ["go", "run", "lab8.go"],
+        "1. 名字：Ommmmmm5566，留言: 哈哈哈哈哈ㄏㄏㄏㄏ哈哈哈哈哈哈，時間： 12/09 03:18\n"+\
+        "2. 名字：Ommmmmm5566，留言: 笑死，時間： 12/09 03:18\n"+\
+        "3. 名字：husky01，留言: 樓上…，時間： 12/09 03:27\n"+\
+        "4. 名字：bakapika，留言: ㄏㄏ，時間： 12/09 06:25\n"+\
+        "5. 名字：scmdwyam，留言: XDD，時間： 12/09 08:48\n"+\
+        "6. 名字：L2e2o4，留言: ㄏㄏ，時間： 12/09 09:21\n"+\
+        "7. 名字：NobleDino，留言: ㄏㄏ，時間： 12/09 09:34\n"+\
+        "8. 名字：tottoko0908，留言: ㄏㄏ，時間： 12/09 09:45\n"+\
+        "9. 名字：lmh911152，留言: ㄏㄏ，時間： 12/09 09:56\n"+\
+        "10. 名字：monicamomo，留言: ㄏㄏ，時間： 12/09 10:25\n",
+        False
+    ),
+    (
+        ["go", "run", "lab8.go", "-max", "5"],
+        "1. 名字：Ommmmmm5566，留言: 哈哈哈哈哈ㄏㄏㄏㄏ哈哈哈哈哈哈，時間： 12/09 03:18\n"+\
+        "2. 名字：Ommmmmm5566，留言: 笑死，時間： 12/09 03:18\n"+\
+        "3. 名字：husky01，留言: 樓上…，時間： 12/09 03:27\n"+\
+        "4. 名字：bakapika，留言: ㄏㄏ，時間： 12/09 06:25\n"+\
+        "5. 名字：scmdwyam，留言: XDD，時間： 12/09 08:48\n",
+        False
+    ),
+    (
+        ["go", "run", "lab8.go", "-hello"],
+        "flag provided but not defined: -hello\n"+\
+        "Usage of\n"+\
+        "  -max int\n"+\
+    	"    	Max number of comments to show (default 10)\n"+\
+        "exit status 2\n",
+        True
+    ),
+    (
+        ["go", "run", "lab8.go", "-max"],
+        "flag needs an argument: -max\n"+\
+        "Usage of\n"+\
+        "  -max int\n"+\
+    	"    	Max number of comments to show (default 10)\n"+\
+        "exit status 2\n",
+        True
+    ),
+    (
+        ["go", "run", "lab8.go", "-max", "hello"],
+        'invalid value "hello" for flag -max: parse error\n'+\
+        "Usage of\n"+\
+        "  -max int\n"+\
+    	"    	Max number of comments to show (default 10)\n"+\
+        "exit status 2\n",
+        True
+    )
+]
+
+def edits_string(first, second):
+
+        first = first.splitlines(1)
+        second = second.splitlines(1)
+        result = difflib.unified_diff(first, second)
+
+        colored_diff = []
+        for line in result:
+            if line.startswith(' '):
+                colored_diff.append('\033[0m' + line)
+            elif line.startswith('+'):
+                colored_diff.append('\033[32m' + line)
+            elif line.startswith('-'):
+                colored_diff.append('\033[31m' + line)
+        return ''.join(colored_diff) + '\033[0m'
+
+def main():
+    try:
+        for i, (args, ans, isError) in enumerate(testcase):
+            os.system(f"{' '.join(args)} > result_{i}.txt 2>&1")
+            with open(f"result_{i}.txt", "r", encoding='utf-8') as file_:
+                output = file_.read()
+                if isError:
+                    uidx = output.find("Usage of")
+                    if uidx == -1:
+                        print(f"\033[1;31m[ERROR]\033[0;33m\nCommand:\033[0m\n{' '.join(args)}\n\033[0;33mResult:\033[0m")
+                        print(edits_string(ans, output))
+                        break
+                    tidx = output.index("\n", uidx)
+                    if tidx == -1:
+                        print(f"\033[1;31m[ERROR]\033[0;33m\nCommand:\033[0m\n{' '.join(args)}\n\033[0;33mResult:\033[0m")
+                        print(edits_string(ans, output))
+                        break
+                    output = output[:uidx + 8] + output[tidx:]
+
+                if output != ans:
+                    print(f"\033[1;31m[ERROR]\033[0;33m\nCommand:\033[0m\n{' '.join(args)}\n\033[0;33mResult:\033[0m")
+                    print(edits_string(ans, output))
+                    break
+        else:
+            return 0
+    finally:
+        for i in range(len(testcase)):
+            if os.path.exists(f"result_{i}.txt"):
+                os.remove(f"result_{i}.txt")
+    return 1
+
+if __name__ == "__main__":
+    status = main()
+    if status == 0:
+        print("\033[1;32mPASS\033[0m")
+    sys.exit(status)