Add quiet option, update doc, modify test

CHANGES.rst

@@ -1,3 +1,9 @@
+0.14.0 (2021-09-30)
+-------------------
+- One can now use python -m docxtpl on command line
+  to generate a docx from a template and a json file as a context
+  Thanks to Lcrs123@github
+
 0.12.0 (2021-08-15)
 -------------------
 - Code has be split into many files for better readability

docs/index.rst

@@ -387,6 +387,30 @@ Then in your template, you will be able to use::
 
     Euros price : {{ price_dollars|multiply_by(0.88) }}
 
+
+Command-line execution
+----------------------
+
+One can use `docxtpl` module directly on command line to generate a docx from a template and a json file as a context::
+
+   usage: python -m docxtpl [-h] [-o] [-q] template_path json_path output_filename
+
+   Make docx file from existing template docx and json data.
+
+   positional arguments:
+     template_path    The path to the template docx file.
+     json_path        The path to the json file with the data.
+     output_filename  The filename to save the generated docx.
+
+   optional arguments:
+     -h, --help       show this help message and exit
+     -o, --overwrite  If output file already exists, overwrites without asking
+                      for confirmation
+     -q, --quiet      Do not display unnecessary messages
+
+
+See tests/module_execute.py for an example.
+
 Examples
 --------
 

docxtpl/__init__.py

@@ -4,7 +4,7 @@ Created : 2015-03-12
 
 @author: Eric Lapouyade
 """
-__version__ = '0.12.0'
+__version__ = '0.14.0'
 
 # flake8: noqa
 from .inline_image import InlineImage

docxtpl/__main__.py

@@ -7,11 +7,12 @@ TEMPLATE_ARG = 'template_path'
 JSON_ARG = 'json_path'
 OUTPUT_ARG = 'output_filename'
 OVERWRITE_ARG = 'overwrite'
+QUIET_ARG = 'quiet'
 
 
 def make_arg_parser() -> argparse.ArgumentParser:
     parser = argparse.ArgumentParser(
-        usage=f'docxtpl [-h] [-o] {TEMPLATE_ARG} {JSON_ARG} {OUTPUT_ARG}',
+        usage=f'python -m docxtpl [-h] [-o] [-q] {TEMPLATE_ARG} {JSON_ARG} {OUTPUT_ARG}',
         description='Make docx file from existing template docx and json data.')
     parser.add_argument(TEMPLATE_ARG,
                         type=str,
@@ -25,6 +26,9 @@ def make_arg_parser() -> argparse.ArgumentParser:
     parser.add_argument('-' + OVERWRITE_ARG[0], '--' + OVERWRITE_ARG,
                         action='store_true',
                         help='If output file already exists, overwrites without asking for confirmation')
+    parser.add_argument('-' + QUIET_ARG[0], '--' + QUIET_ARG,
+                        action='store_true',
+                        help='Do not display unnecessary messages')
     return parser
 
 
@@ -50,7 +54,7 @@ def is_argument_valid(arg_name: str, arg_value: str,overwrite: bool) -> bool:
     elif arg_name == OUTPUT_ARG:
         return arg_value.endswith('.docx') and check_exists_ask_overwrite(
             arg_value, overwrite)
-    elif arg_name == OVERWRITE_ARG:
+    elif arg_name in [OVERWRITE_ARG, QUIET_ARG]:
         return arg_value in [True, False]
 
 
@@ -108,9 +112,11 @@ def render_docx(doc:DocxTemplate, json_data: dict) -> DocxTemplate:
         raise RuntimeError(f'An error ocurred while trying to render the docx') from e
 
 
-def save_file(doc: DocxTemplate, output_path: Path) -> None:
+def save_file(doc: DocxTemplate, parsed_args: dict) -> None:
     try:
+        output_path = parsed_args[OUTPUT_ARG]
         doc.save(output_path)
+        if not parsed_args[QUIET_ARG]:
             print(f'Document successfully generated and saved at {output_path}')
     except PermissionError as e:
         print(f'{e.strerror}. Could not save file {e.filename}.')
@@ -122,17 +128,18 @@ def main() -> None:
     # Everything is in a try-except block that cacthes a RuntimeError that is
     # raised if any of the individual functions called cause an error
     # themselves, terminating the main function.
-    try:
     parsed_args = get_args(parser)
+    try:
         validate_all_args(parsed_args)
         json_data = get_json_data(Path(parsed_args[JSON_ARG]).resolve())
         doc = make_docxtemplate(Path(parsed_args[TEMPLATE_ARG]).resolve())
         doc = render_docx(doc,json_data)
-        save_file(doc, Path(parsed_args[OUTPUT_ARG]).resolve())
+        save_file(doc, parsed_args)
     except RuntimeError as e:
         print('Error: '+e.__str__())
         return
     finally:
+        if not parsed_args[QUIET_ARG]:
             print('Exiting program!')
 
 

tests/main.py

@@ -1,21 +0,0 @@
-from docxtpl.__main__ import main
-import sys
-from pathlib import Path
-
-TEMPLATE_PATH = 'templates/template_for_main_test.docx'
-JSON_PATH = 'templates/json_for_main_test.json'
-OUTPUT_FILENAME = 'output/output_for_main_test.docx'
-OVERWRITE = '-o'
-
-
-# Simulate command line arguments, running with overwrite flag so test can be
-# run repeatedly without need for confirmation:
-sys.argv[1:] = [TEMPLATE_PATH, JSON_PATH, OUTPUT_FILENAME, OVERWRITE]
-
-main()
-
-output_path = Path(OUTPUT_FILENAME)
-
-if output_path.exists():
-    print(f'File {output_path.resolve()} exists.')
-

tests/module_execute.py

@@ -0,0 +1,22 @@
+import sys, os
+from pathlib import Path
+
+TEMPLATE_PATH = 'templates/module_execute_tpl.docx'
+JSON_PATH = 'templates/module_execute.json'
+OUTPUT_FILENAME = 'output/module_execute.docx'
+OVERWRITE = '-o'
+QUIET = '-q'
+
+
+output_path = Path(OUTPUT_FILENAME)
+if output_path.exists():
+    output_path.unlink()
+
+os.chdir(Path(__file__).parent)
+cmd = f'python -m docxtpl {TEMPLATE_PATH} {JSON_PATH} {OUTPUT_FILENAME} {OVERWRITE} {QUIET}'
+print(f'Executing "{cmd}" ...')
+os.system(cmd)
+
+if output_path.exists():
+    print(f'    --> File {output_path.resolve()} has been generated.')
+