Add table name pattern option

README.md

@@ -45,7 +45,8 @@ For PostgreSQL, use this:
       --version                     Show the version and exit.
       --all                         Detect and copy all tables
       --table TEXT                  Specific tables to copy
-      --skip TEXT                   When using --all skip these tables
+      --table-name-pattern TEXT     Table name pattern for tables to copy
+      --skip TEXT                   When using --all or --table-name-pattern skip these tables
       --redact TEXT...              (table, column) pairs to redact with ***
       --sql TEXT                    Optional SQL query to run
       --output TEXT                 Table in which to save --sql query results
@@ -67,7 +68,12 @@ You can also save the data from all of your tables, effectively creating a SQLit
     db-to-sqlite "postgresql://localhost/myblog" blog.db \
         --all
 
-When running `--all` you can specify tables to skip using `--skip`:
+Alternatively, you can specify a regex pattern via `--table-name-pattern` to match against table names. For example:
+
+    db-to-sqlite "postgresql://localhost/myblog" blog.db \
+        --table-name-pattern "tag_\w+"
+
+When running `--all` or `--table-name-pattern` you can specify tables to skip using `--skip`:
 
     db-to-sqlite "postgresql://localhost/myblog" blog.db \
         --all \

db_to_sqlite/cli.py

@@ -1,4 +1,5 @@
 import itertools
+import re
 
 import click
 from sqlalchemy import create_engine, inspect
@@ -11,7 +12,8 @@
 @click.argument("path", type=click.Path(exists=False), required=True)
 @click.option("--all", help="Detect and copy all tables", is_flag=True)
 @click.option("--table", help="Specific tables to copy", multiple=True)
-@click.option("--skip", help="When using --all skip these tables", multiple=True)
+@click.option("--table-name-pattern", help="Table name pattern for tables to copy")
+@click.option("--skip", help="When using --all or --table-name-pattern skip these tables", multiple=True)
 @click.option(
     "--redact",
     help="(table, column) pairs to redact with ***",
@@ -34,6 +36,7 @@ def cli(
     path,
     all,
     table,
+    table_name_pattern,
     skip,
     redact,
     sql,
@@ -58,10 +61,14 @@ def cli(
 
     More: https://docs.sqlalchemy.org/en/13/core/engines.html#database-urls
     """
-    if not all and not table and not sql:
-        raise click.ClickException("--all OR --table OR --sql required")
-    if skip and not all:
-        raise click.ClickException("--skip can only be used with --all")
+    if not all and not table and not table_name_pattern and not sql:
+        raise click.ClickException(
+            "--all OR --table OR --table-name-pattern OR --sql required"
+        )
+    if skip and not (all or table_name_pattern):
+        raise click.ClickException(
+            "--skip can only be used with --all OR --table-name-pattern"
+        )
     redact_columns = {}
     for table_name, column_name in redact:
         redact_columns.setdefault(table_name, set()).add(column_name)
@@ -78,6 +85,12 @@ def cli(
     tables = table
     if all:
         tables = inspector.get_table_names()
+    elif table_name_pattern:
+        tables = [
+            t
+            for t in inspector.get_table_names()
+            if re.match(table_name_pattern, t) is not None
+        ]
     if tables:
         foreign_keys_to_add = []
         for i, table in enumerate(tables):