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An experimental module for reading dvi files output by TeX. Several
limitations make this not (currently) useful as a general-purpose dvi
preprocessor, but it is currently used by the pdf backend for
processing usetex text.
Interface::
dvi = Dvi(filename, 72)
# iterate over pages (but only one page is supported for now):
for page in dvi:
w, h, d = page.width, page.height, page.descent
for x,y,font,glyph,width in page.text:
fontname = font.texname
pointsize = font.size
...
for x,y,height,width in page.boxes:
...
i����( t print_functionNi i c C s | S( N( ( t x( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt ord s t pret outeri t inpagei t post_postt finalei t Dvic B s
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A dvi ("device-independent") file, as produced by TeX.
The current implementation only reads the first page and does not
even attempt to verify the postamble.
c C sK t j j d | d � t | d � | _ | | _ i | _ t j | _ d S( s�
Initialize the object. This takes the filename as input and
opens the file; actually reading the file happens when
iterating through the pages of the file.
s Dvi: t debugt rbN(
t
matplotlibt verboset reportt opent filet dpit fontst _dvistateR t state( t selft filenameR ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt __init__, s
c c s2 x+ t r- | j � } | r) | j � Vq Pq Wd S( s
Iterate through the pages of the file.
Returns (text, boxes) pairs, where:
text is a list of (x, y, fontnum, glyphnum, width) tuples
boxes is a list of (x, y, height, width) tuples
The coordinates are transformed into a standard Cartesian
coordinate system at the dpi value given when initializing.
The coordinates are floating point numbers, but otherwise
precision is not lost and coordinate values are not clipped to
integers.
N( t Truet _readt _output( R t have_page( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt __iter__8 s
c C s | j j s | j j � n d S( s:
Close the underlying file if it is open.
N( R t closedt close( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR M s c C s3 t j t j t j t j f \ } } } } t j } x� | j | j D]� } t | � d k rz | \ } } } }
d } n* | \ } } } }
}
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Output the text and boxes belonging to the most recent page.
page = dvi._output()
i i t textt boxest widtht heightt descentg�z�GR@i i Ni ( t npt infR R t lent _height_depth_oft mint maxR t Nonet mpl_cbookt Bunch( R t minxt minyt maxxt maxyt maxy_puret eltR t yt ht wt et fontt gt dt fR R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR T s2 ,
KLc C sj xc t re t | j j d � d � } | j | � | d k rB t S| j t j k r | j � t Sq Wd S( st
Read one page from the file. Return True if successful,
False if there were no more pages.
i i i� N(
R R R t readt _dispatchR R R R t False( R t byte( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR x s
c C sw | j j | � } t | d � } | rA | d k rA | d } n x/ t d | � D] } d | t | | � } qQ W| S( s~
Read and return an integer argument *nbytes* long.
Signedness is determined by the *signed* keyword.
i i� i i ( R R: R t range( R t nbytest signedt strt valuet i( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt _arg� s
c C s d | k o d k n r, | j | � n�| d k rQ | j | j d � � n�| d k rv | j | j d � � n�| d k r� | j | j d � � nh| d k r� | j | j d
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t � ^ q � n�| d k r;| j � n�| d k rT| j
� n�| d k rm| j � n�| d k r�| j | j d t � � nn| d k r�| j | j d t � � nF| d k r�| j | j d t � � n | d k r
| j | j d
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| j | j d t � � n�| d" k r5| j | j d t � � n�| d# k r]| j | j d t � � n�| d$ k r�| j | j d
t � � n~| d% k r�| j | j d t � � nV| d& k r�| j | j d t � � n.| d' k r�| j | j d t � � n| d( k r%| j | j d
t � � n�| d) k rA| j dA � n�| d* k ri| j | j d t � � n�| d+ k r�| j | j d t � � nr| d, k r�| j | j d t � � nJ| d- k r�| j | j d
t � � n"| d. k r�| j dA � n| d/ k r%| j | j d t � � n�| d0 k rM| j | j d t � � n�| d1 k ru| j | j d t � � n�| d2 k r�| j | j d
t � � nfd3 | k o�d4 k n r�| j | d3 � n6| d5 k r�| j | j d � � n| d6 k r| j | j d � � n�| d7 k r<| j | j d � � n�| d8 k rd| j | j d
t � � n�d9 | k o{d: k n r�| j | d8 � } | j j | � } | j | � nNd; | k o�d< k n rV| j | d: | d< k � } g dB D] } | j | � ^ q�\ } } } }
} | j j |
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} } } | j j | � } | j | |
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Based on the opcode *byte*, read the correct kinds of
arguments from the dvi file and call the method implementing
that opcode with those arguments.
i i i� i i� i i� i i� i i� i� i� i� i� i� i� i� i i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� i� s unknown command: byte %dN( i i i i i ( i i i i i ( t _set_charRD R t _set_rulet _put_chart _put_rulet _nopt _bopR> t _eopt _pusht _popt _rightt _right_wR) t _right_xt _downt _down_yt _down_zt _fnt_numR R: t _xxxt _fnt_deft _pret _postt
_post_postt
ValueError( R R= RC R% t specialt kR t ct sR8 t at lt nt numt dent mag( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR; � s� + +
5
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c C s� | j t j k r! t d � � n | d k r@ t d | � � n | d k s\ | d d
k rk t d � � n | d k r� t d � � n t j | _ d S( Ns! pre command in middle of dvi filei s Unknown dvi format %di���i; i s nonstandard units in dvi filei� s% nonstandard magnification in dvi filei ( R R R RZ R ( R RC Rb Rc Rd t comment( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRW � s c C sT | j t j k r! t d � � n | j | � | j | j | j j | � 7_ d S( Ns misplaced set_char in dvi file( R R R RZ RG R3 R R9 t _width_of( R t char( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRE � s
c C sD | j t j k r! t d � � n | j | | � | j | 7_ d S( Ns misplaced set_rule in dvi file( R R R RZ RH R3 ( R R_ t b( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRF � s c
C s� | j t j k r! t d � � n | j | j } | j d k rq | j j | j
| j | | | j | � f � n(| j
} x� | j | j D]� \ } } } } } t d t | | j
� d | j d | j d | j � } | j j | j
t | | � | j t | | � | | | j | � f � q� W| j j g | j | j D]V \ } } }
} | j
t | | � | j t | | � t |
| � t | | � f ^ q<� d S( Ns misplaced put_char in dvi filet scalet tfmt texnamet vf( R R R RZ R R9 t _vfR) R t appendR3 t vRf t _scalet DviFontt _mul2012t _tfmRk R t extend( R Rg R6 Ri R R2 R9 R7 R4 t newfR_ Rh ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRG � s & c C sb | j t j k r! t d � � n | d k r^ | d k r^ | j j | j | j | | f � n d S( Ns misplaced put_rule in dvi filei ( R R R RZ R Rn R3 Ro ( R R_ Rh ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRH s c C s d S( N( ( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRI s c C s} | j t j k r( t d | j � � n t j | _ d \ | _ | _ | _ | _ | _ | _
g | _ g | _ g | _
d S( Ns$ misplaced bop in dvi file (state %d)i ( i i i i i i ( R R R RZ R R3 Ro R4 R R2 t zt stackR R ( R t c0t c1t c2t c3t c4t c5t c6t c7t c8t c9t p( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRJ " s * c C s[ | j t j k r! t d � � n t j | _ | ` | ` | ` | ` | ` | `
| ` d S( Ns misplaced eop in dvi file( R R R RZ R R3 Ro R4 R R2 Rv Rw ( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRK + s c C sY | j t j k r! t d � � n | j j | j | j | j | j | j
| j f � d S( Ns misplaced push in dvi file( R R R RZ Rw Rn R3 Ro R4 R R2 Rv ( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRL 1 s c C sX | j t j k r! t d � � n | j j � \ | _ | _ | _ | _ | _
| _ d S( Ns misplaced pop in dvi file( R R R RZ Rw t popR3 Ro R4 R R2 Rv ( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRM 6 s c C s4 | j t j k r! t d � � n | j | 7_ d S( Ns misplaced right in dvi file( R R R RZ R3 ( R Rh ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRN ; s c C sO | j t j k r! t d � � n | d k r9 | | _ n | j | j 7_ d S( Ns misplaced w in dvi file( R R R RZ R) R4 R3 ( R t new_w( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRO @ s
c C sO | j t j k r! t d � � n | d k r9 | | _ n | j | j 7_ d S( Ns misplaced x in dvi file( R R R RZ R) R R3 ( R t new_x( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRP G s
c C s4 | j t j k r! t d � � n | j | 7_ d S( Ns misplaced down in dvi file( R R R RZ Ro ( R R_ ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRQ N s c C sO | j t j k r! t d � � n | d k r9 | | _ n | j | j 7_ d S( Ns misplaced y in dvi file( R R R RZ R) R2 Ro ( R t new_y( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRR S s
c C sO | j t j k r! t d � � n | d k r9 | | _ n | j | j 7_ d S( Ns misplaced z in dvi file( R R R RZ R) Rv Ro ( R t new_z( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRS Z s
c C s. | j t j k r! t d � � n | | _ d S( Ns misplaced fnt_num in dvi file( R R R RZ R9 ( R R\ ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRT a s c C s� t j d d k r� t j j d d j g | D]D } d t | � k oO d k n r` t | � pm d t | � ^ q, � d � ne t j j d d j g | D]> } d t | � k o� d k n r� | p� d t | � ^ q� � d � d S( Ni i s! Dvi._xxx: encountered special: %st i i s <%02x>R ( t syst version_infoR R R
t joinR t chr( R R[ t ch( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRU f s O
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C s� t | | j d � � } | d k rW | j d k rW | | j k rW t d | � � n t | | j d � � } t d | d | d | d | � | j | <d S( Nt asciii s tfm checksum mismatch: %sRi Rj Rk Rl ( t _tfmfilet decodet checksumRZ t _vffileRq R (
R R\ R] R^ R8 R_ R` Ra Rj Rl ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRV v s
*c C s1 | j t j k r! t d � � n t j | _ d S( Ns misplaced post in dvi file( R R R RZ R ( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRX � s c C s
t � d S( N( t NotImplementedError( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRY � s ( t __name__t
__module__t __doc__R R R R R R< RD R; RW RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RX RY ( ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR % s: $
I
Rq c B sA e Z d Z d Z d � Z d � Z d � Z d
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s*
Object that holds a font's texname and size, supports comparison,
and knows the widths of glyphs in the same units as the AFM file.
There are also internal attributes (for use by dviread.py) that
are *not* used for comparison.
The size is in Adobe points (converted from TeX points).
.. attribute:: texname
Name of the font as used internally by TeX and friends. This
is usually very different from any external font names, and
:class:`dviread.PsfontsMap` can be used to find the external
name of the font.
.. attribute:: size
Size of the font in Adobe points, converted from the slightly
smaller TeX points.
.. attribute:: widths
Widths of glyphs in glyph-space units, typically 1/1000ths of
the point size.
Rk t sizet widthsRp Rm Rs c C s� t j d d k r4 t | t � r4 | j d � } n | | | | f \ | _ | _ | _ | _ | d d d | _ y t
| j j � � d } Wn t
k
r� d } n Xg t | � D]# } d | j j | d � d
?^ q� | _ d S( Ni i R� g R@g�z�GR@i i i i� i i ( R� R� t
isinstancet bytesR� Rp Rs Rk Rm R� R( R t iterkeysRZ R> t getR� ( R Ri Rj Rk Rl t ncharsRg ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR � s "*
c C s4 | j | j k o3 | j | j k o3 | j | j k S( N( t __class__Rk R� ( R t other( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt __eq__� s c C s | j | � S( N( R� ( R R� ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt __ne__� s c C sX | j j j | d � } | d k r4 t | | j � St j j d | | j f d � d S( sM
Width of char in dvi units. For internal use by dviread.py.
s No width for char %d in font %sR i N(
Rs R R� R) Rr Rp R R R
Rk ( R Rg R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRf � s c C s� g } x� | j j d f | j j d f f D]v \ } } | j | d � } | d k r� t j j d | | | j f d � | j d � q+ | j t
| | j � � q+ W| S( sX
Height and depth of char in dvi units. For internal use by dviread.py.
R! t depths No %s for char %d in font %sR i N( Rs R! R� R� R) R R R
Rk Rn Rr Rp ( R Rg t resultt metrict nameRB ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR& � s ( s texnames sizes widthss _scales _vfs _tfm( R� R� R� t __slots__R R� R� Rf R& ( ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRq � s
t Vfc B sM e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s�
A virtual font (\*.vf file) containing subroutines for dvi files.
Usage::
vf = Vf(filename)
glyph = vf[code]
glyph.text, glyph.boxes, glyph.width
c C sN t j | | d � z) d | _ i | _ d | _ | j � Wd | j � Xd S( Ni ( R R R) t _first_fontt _charst _packet_endsR R ( R R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR � s c C s | j | S( N( R� ( R t code( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt __getitem__� s c C s | j t j k r� | j j � d } | | j k rA | j � q� | | j k r_ t d � � q� | d k sw | d k r� t d | � � n t j | | � d Sn | d k r� | j
d � | j
d � } } | j | | | � n | d k r/g d D] } | j
| � ^ q� \ } } } | j | | | � n� d | k oFd
k n r^t j | | � n� | d k r�| j
d � | j
d � } } | j j | � } | j
d � | j
d � } }
| j
| | | |
� n+ | d k r�t j | _ n t d
| � � d S( Ni s! Packet length mismatch in vf filei� i� i� s" Inappropriate opcode %d in vf filei� i i i� i� i� s unknown vf opcode %d( i� i� ( i i i ( R R R R t tellR� t _finalize_packetRZ R R; RD t _init_packetR: RW R ( R R= t byte_att ccRj R t plRC R\ t cst ds( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR; � s4
+ c C s� | j t j k r! t d � � n t j | _ | j j � | | _ | | _ | | _ d \ | _
| _ | _ | _
| _ | _ g g g | _ | _ | _ | j | _ d S( Ns Misplaced packet in vf filei ( i i i i i i ( R R R RZ R R R� R� t _packet_chart
_packet_widthR3 Ro R4 R R2 Rv Rw R R R� R9 ( R R� R� Rj ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR� s * c C sA t j d | j d | j d | j � | j | j <t j | _ d S( NR R R (
R* R+ R R R� R� R� R R R ( R ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR� # s (c C sv | j t j k r! t d � � n | d k r@ t d | � � n t | � rf t j j d | d � n t j | _ d S( Ns pre command in middle of vf filei� s Unknown vf format %ds vf file comment: R ( R R R RZ R% R R R
R ( R RC R R� R� ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRW ( s c G s2 t j | | | � | j d k r. | | _ n d S( N( R RV R� R) ( R R\ t args( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRV 2 s (
R� R� R� R R� R; R� R� RW RV ( ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyR� � s
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c C s | d @r | d S| Sd S( s4
Convert from two's complement to negative.
i i i NI � I ( ( Rb ( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyt _fix2comp7 s
c C s | | d ?S( s;
Multiply two numbers in 20.12 fixed point format.
i ( ( t num1t num2( ( s8 /usr/lib64/python2.7/site-packages/matplotlib/dviread.pyRr A s t Tfmc B s e Z d Z d Z d � Z RS( sB
A TeX Font Metric file. This implementation covers only the bare
minimum needed by the Dvi class.
.. attribute:: checksum
Used for verifying against the dvi file.
.. attribute:: design_size
Design size of the font (in what units?)
.. attribute:: width
Width of each character, needs to be scaled by the factor
specified in the dvi file. This is a dict because indexing may
not start from 0.
.. attribute:: height
Height of each character.
.. attribute:: depth
Depth of each character.
R� t design_sizeR R! R� c C s* t j j d | d � t | d � �� } | j d � } t j d | d d !� \ } } } } } } t j j d | | | | | | f d � | j d | � }
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PsfontsMapc B s8 e Z d Z d Z d � Z d � Z d � Z d � Z RS( s�
A psfonts.map formatted file, mapping TeX fonts to PS fonts.
Usage::
>>> map = PsfontsMap(find_tex_file('pdftex.map'))
>>> entry = map['ptmbo8r']
>>> entry.texname
'ptmbo8r'
>>> entry.psname
'Times-Bold'
>>> entry.encoding
'/usr/local/texlive/2008/texmf-dist/fonts/enc/dvips/base/8r.enc'
>>> entry.effects
{'slant': 0.16700000000000001}
>>> entry.filename
For historical reasons, TeX knows many Type-1 fonts by different
names than the outside world. (For one thing, the names have to
fit in eight characters.) Also, TeX's native fonts are not Type-1
but Metafont, which is nontrivial to convert to PostScript except
as a bitmap. While high-quality conversions to Type-1 format exist
and are shipped with modern TeX distributions, we need to know
which Type-1 fonts are the counterparts of which native fonts. For
these reasons a mapping is needed from internal font names to font
file names.
A texmf tree typically includes mapping files called e.g.
psfonts.map, pdftex.map, dvipdfm.map. psfonts.map is used by
dvips, pdftex.map by pdfTeX, and dvipdfm.map by dvipdfm.
psfonts.map might avoid embedding the 35 PostScript fonts (i.e.,
have no filename for them, as in the Times-Bold example above),
while the pdf-related files perhaps only avoid the "Base 14" pdf
fonts. But the user may have configured these files differently.
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| <d S( s> Register a font described by "words".
The format is, AFAIK: texname fontname [effects and filenames]
Effects are PostScript snippets like ".177 SlantFont",
filenames begin with one or two less-than signs. A filename
ending in enc is an encoding file, other filenames are font
files. This can be overridden with a left bracket: <[foobar
indicates an encoding file named foobar.
There is some difference between <foo.pfb and <<bar.pfb in
subsetting, but I have no example of << in my TeX installation.
i R� t <t [s .encs Multiple encodings for %s = %sR i t SlantFontt slantt
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Parses a \*.enc file referenced from a psfonts.map style file.
The format this class understands is a very limited subset of
PostScript.
Usage (subject to change)::
for name in Encoding(filename):
whatever(name)
R� c C se t | d � �P } t j j d | d � | j | � | _ t j j d t | j � d � Wd QXd S( NR� s Parsing TeX encoding s debug-annoyings Result: ( R R R R
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| j d � } | j | d � q� t d | � � q� Wq q W| S(
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Call :program:`kpsewhich` to find a file in the texmf tree. If
*format* is not None, it is used as the value for the
:option:`--format` option.
Apparently most existing TeX distributions on Unix-like systems
use kpathsea. I hear MikTeX (a popular distribution on Windows)
doesn't use kpathsea, so what do we do? (TODO)
.. seealso::
`Kpathsea documentation <http://www.tug.org/kpathsea/>`_
The library that :program:`kpsewhich` is part of.
t kpsewhichs --format=s find_tex_file(%s): %sR t stdoutt stderri s find_tex_file result: %sR� N(
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