Function rule_dict

src_classic/utils.py:4723–4754

Make a Python dict from a PDF page label rule. Args: item -- a tuple (pno, rule) with the start page number and the rule string like < >. Returns: A dict like {'startpage': int, 'prefix': str, 'style': str, 'firstpagenum': int}.

(item)

def rule_dict(item):
    """Make a Python dict from a PDF page label rule.

    Args:
        item -- a tuple (pno, rule) with the start page number and the rule
                string like <</S/D...>>.
    Returns:
        A dict like
        {'startpage': int, 'prefix': str, 'style': str, 'firstpagenum': int}.
    """
    # Jorj McKie, 2021-01-06

    pno, rule = item
    rule = rule[2:-2].split("/")[1:]  # strip "<<" and ">>"
    d = {"startpage": pno, "prefix": "", "firstpagenum": 1}
    skip = False
    for i, item in enumerate(rule):
        if skip:  # this item has already been processed
            skip = False  # deactivate skipping again
            continue
        if item == "S":  # style specification
            d["style"] = rule[i + 1]  # next item has the style
            skip = True  # do not process next item again
            continue
        if item.startswith("P"):  # prefix specification: extract the string
            x = item[1:].replace("(", "").replace(")", "")
            d["prefix"] = x
            continue
        if item.startswith("St"):  # start page number specification
            x = int(item[2:])
            d["firstpagenum"] = x
    return d


def get_label_pno(pgNo, labels):