Add CLI command to insert book in library

1 files changed, 55 insertions, 0 deletions

diff --git a/src/new/reader.py b/src/new/reader.py
new file mode 100644
index 0000000..eacd70b
--- /dev/null
+++ b/src/new/reader.py
@@ -0,0 +1,55 @@
+def required(label):
+    value = input(f'{label}: ').strip()
+    if value:
+        print()
+        return value
+    else:
+        return required(label)
+
+def multi_line(label):
+    lines = ''
+    print(f'{label}, type [end] to finish:\n')
+    while True:
+        value = input()
+        if value.strip() == '[end]':
+            break
+        elif value.strip():
+            lines += f'{value.strip()}\n'
+    print()
+    return lines.strip()
+
+def optional(label):
+    value = input(f'{label} (optional): ').strip()
+    print()
+    return value
+
+def non_empty_list(label):
+    value = input(f'{label} (separated by commas): ')
+    values = [x.strip() for x in value.split(',') if x.strip()]
+    if len(values) > 0:
+        print()
+        return values
+    else:
+        return non_empty_list(label)
+
+def integer(label):
+    value = input(f'{label}: ').strip()
+    if value.isdigit():
+        print()
+        return int(value)
+    else:
+        return integer(label)
+
+def choices(label, xs):
+    pp_choices = '/'.join(xs)
+    value = input(f'{label} [{pp_choices}] ')
+    if value in xs:
+        print()
+        return value
+    else:
+        return choices(label, xs)
+
+def confirm(message):
+    if choices(message, ['y', 'n']) == 'n':
+        print('\nStopping.')
+        exit(1)