Module validation 

Input validation helpers.

Functions

validate_alt_text

Validate alt text length.

validate_carousel_children

Validate carousel child count is between MIN_CAROUSEL_ITEMS and MAX_CAROUSEL_ITEMS inclusive.

validate_country_codes

Validate country codes: each must be exactly 2 alphabetic ASCII characters.

validate_gif_attachment

Validate a GIF attachment: gif_id must be non-empty and provider must be a known variant (enforced at the type level by GifProvider).

validate_limit

Validate that an optional limit does not exceed MAX_POSTS_PER_REQUEST.

validate_link_count

Validate that the combined unique link count from text and link_attachment_url does not exceed MAX_LINKS.

validate_media_url

Validate a media URL: must be non-empty and start with http:// or https://.

validate_pagination_options

Validate pagination options: limit must not exceed MAX_POSTS_PER_REQUEST, and before and after cannot both be set.

validate_pending_replies_options

Validate pending replies options: limit and before/after exclusivity.

validate_poll_attachment

Validate poll attachment options.

validate_posts_options

Validate posts options: limit, since <= until ordering, and before/after exclusivity.

validate_replies_options

Validate replies options: limit and before/after exclusivity.

validate_search_options

Validate search options: limit, since timestamp, since <= until ordering, and before/after exclusivity.

validate_text_attachment

Validate a text attachment: plaintext length and styling ranges.

validate_text_entities

Validate text entities: at most MAX_TEXT_ENTITIES, each must be SPOILER type, and offsets must be non-negative (enforced by usize).

validate_text_length

Validate that text does not exceed MAX_TEXT_LENGTH characters.

validate_topic_tag

Validate a topic tag: must be 1-50 characters and not contain periods (.) or ampersands (&).