sed quivalent: step 6 and challenge completed

Author: sambitr

Coding Challenge#21[build sed]/README.md

@@ -29,3 +29,9 @@ to support deletion
 
 $ ccsed /^$/d unquoted.txt
 <br>########## ================== <br>
+
+### Stepp: 6
+inplace edit and save
+
+$ ccsed -i 's/Life/Code/g' unquoted.txt 
+

Coding Challenge#21[build sed]/ccsed.py

@@ -1,7 +1,18 @@
 import re
 import sys
 
-def substitution(file_name, option, what_to_sub, what_to_sub_with, operate_on = "g"):
+def substitutionWithoutSave(file_name, option, what_to_sub, what_to_sub_with, operate_on = "g"):
+    print(f"file_name={file_name}, option={option}, what_to_sub={what_to_sub}, what_to_sub_with={what_to_sub_with}, operate_on={operate_on}")
+    with open(file_name, "r+") as f:
+        file = f.read()
+
+        file_modified = re.sub(what_to_sub, what_to_sub_with, file)
+        print(file_modified)
+        # f.seek(0, 0)
+        # f.write(file_modified)
+        # f.truncate()
+
+def substitutionWithSave(file_name, option, what_to_sub, what_to_sub_with, operate_on = "g"):
     print(f"file_name={file_name}, option={option}, what_to_sub={what_to_sub}, what_to_sub_with={what_to_sub_with}, operate_on={operate_on}")
     with open(file_name, "r+") as f:
         file = f.read()
@@ -51,6 +62,7 @@ def seddel(option, filename):
 ## take this into consideration when accepting command line arguments
 
 if sys.argv[1] == "-n": 
+    print("-n")
     options = sys.argv[2]
     #print(sys.argv[1], sys.argv[2])
     try: #ccsed -n '2,4p' file_name
@@ -61,19 +73,33 @@ def seddel(option, filename):
         print(options_list)
         sedpatternprint(sys.argv[1], options_list[1],options_list[2], sys.argv[3])
 elif sys.argv[1].upper() == "G":
+    print("G")
     file_name = sys.argv[2]
     seddoublespace(sys.argv[1], file_name)
 
-elif sys.argv[1].split("/")[1] == "^$":
+elif sys.argv[1] == "-i": ## ccsed -i s/abc/def/g file_name
+    print("calling sed without saving")
+    options = sys.argv[2].split("/")
+    file_name = sys.argv[3]
+    if options[0].lower() == "s":
+        try:
+            if options[3].lower() != " ":
+                substitutionWithSave(file_name, "s", options[1], options[2], options[3].lower())
+        except IndexError:
+            substitutionWithSave(file_name, "s", options[1], options[2])
+
+elif sys.argv[1].split("/")[1] == "^$": ## ccsed /^$/d unquoted.txt
+    print("calling seddel")
     seddel(sys.argv[1], sys.argv[2])
 
 else: #ccsed s/this/that/g file_name
+    print("sed without save")
     options = sys.argv[1]
     file_name = sys.argv[2]
     options_list = options.split("/")
     if options_list[0].lower() == "s":
         try:
             if options_list[3].lower() != " ":
-                substitution(file_name, "s", options_list[1], options_list[2], options_list[3].lower())
+                substitutionWithoutSave(file_name, "s", options_list[1], options_list[2], options_list[3].lower())
         except IndexError:
-            substitution(file_name, "s", options_list[1], options_list[2])
+            substitutionWithoutSave(file_name, "s", options_list[1], options_list[2])

Coding Challenge#21[build sed]/unquoted.txt

@@ -1,4 +1,4 @@
-Life isn’t about getting and having, it’s about giving and being.
+Code isn’t about getting and having, it’s about giving and being.
 Whatever the mind of man can conceive and believe, it can achieve.
 Strive not to be a success, but rather to be of value.
 Two roads diverged in a wood, and I—I took the one less traveled by, And that has made all the difference.
@@ -7,4 +7,4 @@ You miss 100% of the shots you don’t take.
 I’ve missed more than 9000 shots in my career. I’ve lost almost 300 games. 26 times I’ve been trusted to take the game winning shot and missed. I’ve failed over and over and over again in my life. And that is why I succeed.
 The most difficult thing is the decision to act, the rest is merely tenacity.
 Every strike brings me closer to the next home run.
-Definiteness of purpose is the starting point of all achievemen
+Definiteness of purpose is the starting point of all achievement