$t->read

Reads the cmap into memory. Format 4 subtables read the whole subtable and fill in the segmented array accordingly.

$t->ms_lookup($uni)

Finds a Unicode table, giving preference to the MS one, and looks up the given Unicode codepoint in it to find the glyph id.

$t->find_ms

Finds the a Unicode table, giving preference to the Microsoft one, and sets the "mstable" instance variable to it if found. Returns the table it finds.

$t->ms_enc

Returns the encoding of the microsoft table (0 => symbol, etc.). Returns undef if there is no Microsoft cmap.

$t->out($fh)

Writes out a cmap table to a filehandle. If it has not been read, then just copies from input file to output

$t->XML_element($context, $depth, $name, $val)

Outputs the elements of the cmap in XML. We only need to process val here

$t->minsize()

Returns the minimum size this table can be in bytes. If it is smaller than this, then the table must be bad and should be deleted or whatever.

$t->update

Tidies the cmap table.

Removes MS Fmt12 cmap if it is no longer needed.

Removes from all cmaps any codepoint that map to GID=0. Note that such entries will be re-introduced as necessary depending on the cmap format.

@map = $t->reverse(%opt)

Returns a reverse map of the Unicode cmap. I.e. given a glyph gives the Unicode value for it. Options are:

tnum

Table number to use rather than the default Unicode table

array

Returns each element of reverse as an array since a glyph may be mapped by more than one Unicode value. The arrays are unsorted. Otherwise store any one unicode value for a glyph.

is_unicode($index)

Returns whether the table of a given index is known to be a unicode table (as specified in the specifications)