(Chilkat2-Python) Regular Expression Replace Full Matches

See more Regular Expressions Examples

Note: Chilkat uses PCRE2. See PCRE2 Regular Expressions
Also see: PCRE2 Performance

Note: This example requires Chilkat v11.1.0 or greater.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS

import sys
import chilkat2

success = False

success = False

subject = "John Anders, +_+_+ Mary Robins $$$$"
pattern = "\\w+\\s+\\w+"

sb = chilkat2.StringBuilder()
sb.Append(subject)

json = chilkat2.JsonObject()
json.EmitCompact = False

timeoutMs = 2000
numMatches = sb.RegexMatch(pattern,json,timeoutMs)
if (numMatches < 0):
    # Probably an error in the regular expression.
    # Suggestion: Use AI to help create and/or diagnose regular expressions.
    print(sb.LastErrorText)
    sys.exit()

# Examine the matches:
print(json.Emit())

# {
#   "match": [
#     {
#       "group": [
#         {
#           "cap": "John Anders",
#           "idx": 0,
#           "len": 11
#         }
#       ]
#     },
#     {
#       "group": [
#         {
#           "cap": "Mary Robins",
#           "idx": 19,
#           "len": 11
#         }
#       ]
#     }
#   ]
# }

sbTemp = chilkat2.StringBuilder()

i = 0
numMatches = json.SizeOfArray("match")
while i < numMatches :

    json.I = i

    # The full match is always in group 0.
    sbTemp.Clear()
    json.StringOfSb("match[i].group[0].cap",sbTemp)

    # Indicate that we wish to replace the full match with it's value converted to uppercase.
    sbTemp.ToUppercase()
    json.UpdateSb("match[i].group[0].rep",sbTemp)

    i = i + 1

# The JSON now has replacement strings:
print(json.Emit())

# {
#   "match": [
#     {
#       "group": [
#         {
#           "cap": "John Anders",
#           "idx": 0,
#           "len": 11,
#           "rep": "JOHN ANDERS"
#         }
#       ]
#     },
#     {
#       "group": [
#         {
#           "cap": "Mary Robins",
#           "idx": 19,
#           "len": 11,
#           "rep": "MARY ROBINS"
#         }
#       ]
#     }
#   ]
# }

# Call RegexReplace to update the StringBuilder with the replacements.
success = sb.RegexReplace(json)
if (success == False):
    print(sb.LastErrorText)
    sys.exit()

print("Result after doing replacements:")
print(sb.GetAsString())

# Result after doing replacements:
# JOHN ANDERS, +_+_+ MARY ROBINS $$$$