class HexaPDF::Font::Type1::AFMParser

Parent	Object

Parses files in the AFM file format.

Note that this implementation isn’t a full AFM parser, only what is needed for parsing the AFM files for the 14 PDF core fonts is implemented. However, if need be it should be adaptable to other AFM files.

For information on the AFM file format have a look at Adobe technical note #5004 - Adobe Font Metrics File Format Specification Version 4.1, available at the Adobe website.

How Parsing Works¶ ↑

AFM is a line oriented format. Each line consists of one or more values of supported types (string, name, number, integer, array, boolean) which are separated by whitespace characters (space, newline, tab) except for the string type which just uses everything until the end of the line.

This parser reads in line by line and the type parsing functions parse a value from the front of the line and then remove the parsed part from the line, including trailing whitespace characters.

Public Class Methods

new(io)¶

Creates a new parse for the given IO stream.

parse(filename) → font_metrics ¶

parse(io) → font_metrics ¶

Parses the IO or file and returns a FontMetrics object.

Public Instance Methods

parse()¶

Parses the AFM file and returns a FontMetrics object.