Run3 pdf calendar parser

Parses /root/calendar.pdf to extract appointment timings, color-coded blocks, and time-axis mappings using pdfplumber.From its SKILL.md

Install

npx -y skills add cxcscmu/SkillLearnBench --skill run3_pdf_calendar_parser

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SKILL.md

1.4 KB, 294 tokens by cl100k_base, as published. Nobody here has run it

Initialize PDF Analysis: Use pdfplumber to open /root/calendar.pdf. Iterate through pages to extract both text objects (to locate time labels) and graphical shapes (to identify rectangles).
Calculate Scaling: Identify horizontal lines in the PDF. Calculate pixels_per_15min by measuring the vertical distance between two consecutive horizontal time-marker lines.
Map Coordinates to Time:
- Extract the text timestamps (e.g., "09:00 AM", "09:15 AM") and their corresponding Y-coordinates.
- Create a reference dictionary mapping Y-offsets to absolute time.
- Calculate the start time of the calendar grid based on the top-most time label.
Identify Appointments and Colors:
- Extract rectangles from page.rects. Access rect['non_stroking_color'] or rect['stroking_color'] to identify color properties.
- Classify rectangles: if color is blue (check for specific RGB/CMYK values representing the "low-priority" color), tag as flexible. Otherwise, tag as busy.
- Convert rectangle Y-coordinates into start_time and end_time using the pixels_per_15min ratio.
Output: Return a list of objects containing start, end, and is_flexible (boolean) for each block.

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Just SKILL.md. No reference files, no scripts.