mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-27 19:59:46 +00:00
376cb6763f
Remove support for python 1.x (really) This code has not been used for a long time, probably never, since some code above requires at least python 2.4 to work. I got to this code by running futurize from python-future. There are no significant warnings, mostly are related with the division but since we are dividing floats there is no change between python 2 and 3.
582 lines
22 KiB
Python
Executable File
582 lines
22 KiB
Python
Executable File
# -*- coding: utf-8 -*-
|
|
|
|
# file lyxpreview2bitmap.py
|
|
# This file is part of LyX, the document processor.
|
|
# Licence details can be found in the file COPYING.
|
|
|
|
# author Angus Leeming
|
|
# with much advice from members of the preview-latex project:
|
|
# David Kastrup, dak@gnu.org and
|
|
# Jan-Åke Larsson, jalar@mai.liu.se.
|
|
|
|
# Full author contact details are available in file CREDITS
|
|
|
|
# This script takes a LaTeX file and generates a collection of
|
|
# png or ppm image files, one per previewed snippet.
|
|
|
|
# Pre-requisites:
|
|
# * python 2.4 or later (subprocess module);
|
|
# * A latex executable;
|
|
# * preview.sty;
|
|
# * dvipng;
|
|
# * dv2dt;
|
|
# * pngtoppm (if outputing ppm format images).
|
|
|
|
# preview.sty and dvipng are part of the preview-latex project
|
|
# http://preview-latex.sourceforge.net/
|
|
|
|
# preview.sty can alternatively be obtained from
|
|
# CTAN/support/preview-latex/
|
|
|
|
# Example usage:
|
|
# lyxpreview2bitmap.py --bg=faf0e6 0lyxpreview.tex
|
|
|
|
# This script takes one obligatory argument:
|
|
#
|
|
# <input file>: The name of the .tex file to be converted.
|
|
#
|
|
# and these optional arguments:
|
|
#
|
|
# --png, --ppm: The desired output format. Either 'png' or 'ppm'.
|
|
# --dpi=<res>: A scale factor, used to ascertain the resolution of the
|
|
# generated image which is then passed to gs.
|
|
# --fg=<color>: The foreground color as a hexadecimal string, eg '000000'.
|
|
# --bg=<color>: The background color as a hexadecimal string, eg 'faf0e6'.
|
|
# --latex=<exe>: The converter for latex files. Default is latex.
|
|
# --bibtex=<exe>: The converter for bibtex files. Default is bibtex.
|
|
# --lilypond: Preprocess through lilypond-book. Default is false.
|
|
# --lilypond-book=<exe>:
|
|
# The converter for lytex files. Default is lilypond-book.
|
|
#
|
|
# -d, --debug Show the output from external commands.
|
|
# -h, --help Show an help screen and exit.
|
|
# -v, --verbose Show progress messages.
|
|
|
|
# Decomposing TEXFILE's name as DIR/BASE.tex, this script will,
|
|
# if executed successfully, leave in DIR:
|
|
# * a (possibly large) number of image files with names
|
|
# like BASE[0-9]+.png
|
|
# * a file BASE.metrics, containing info needed by LyX to position
|
|
# the images correctly on the screen.
|
|
|
|
# What does this script do?
|
|
# 1) Call latex/pdflatex/xelatex/whatever (CONVERTER parameter)
|
|
# 2) If the output is a PDF fallback to legacy
|
|
# 3) Otherwise check each page of the DVI (with dv2dt) looking for
|
|
# PostScript literals, not well supported by dvipng. Pages
|
|
# containing them are passed to the legacy method in a new LaTeX file.
|
|
# 4) Call dvipng on the pages without PS literals
|
|
# 5) Join metrics info coming from both methods (legacy and dvipng)
|
|
# and write them to file
|
|
|
|
# dvipng is fast but gives problem in several cases, like with
|
|
# PSTricks, TikZ and other packages using PostScript literals
|
|
# for all these cases the legacy route is taken (step 3).
|
|
# Moreover dvipng can't work with PDF files, so, if the CONVERTER
|
|
# paramter is pdflatex we have to fallback to legacy route (step 2).
|
|
|
|
from __future__ import print_function
|
|
|
|
import getopt, glob, os, re, shutil, sys, tempfile
|
|
|
|
from legacy_lyxpreview2ppm import extract_resolution, legacy_conversion_step1
|
|
|
|
from lyxpreview_tools import bibtex_commands, check_latex_log, copyfileobj, \
|
|
error, filter_pages, find_exe, find_exe_or_terminate, \
|
|
join_metrics_and_rename, latex_commands, latex_file_re, make_texcolor, \
|
|
pdflatex_commands, progress, run_command, run_latex, run_tex, \
|
|
warning, write_metrics_info
|
|
|
|
PY2 = sys.version_info[0] == 2
|
|
|
|
def usage(prog_name):
|
|
msg = """
|
|
Usage: %s <options> <input file>
|
|
|
|
Options:
|
|
--dpi=<res>: Resolution per inch (default: 128)
|
|
--png, --ppm: Select the output format (default: png)
|
|
--fg=<color>: Foreground color (default: black, ie '000000')
|
|
--bg=<color>: Background color (default: white, ie 'ffffff')
|
|
--latex=<exe>: Specify the executable for latex (default: latex)
|
|
--bibtex=<exe>: Specify the executable for bibtex (default: bibtex)
|
|
--lilypond: Preprocess through lilypond-book (default: false)
|
|
--lilypond-book=<exe>:
|
|
The executable for lilypond-book (default: lilypond-book)
|
|
|
|
-d, --debug: Show the output from external commands
|
|
-h, --help: Show this help screen and exit
|
|
-v, --verbose: Show progress messages
|
|
|
|
The colors are hexadecimal strings, eg 'faf0e6'."""
|
|
return msg % prog_name
|
|
|
|
# Returns a list of tuples containing page number and ascent fraction
|
|
# extracted from dvipng output.
|
|
# Use write_metrics_info to create the .metrics file with this info
|
|
def extract_metrics_info(dvipng_stdout):
|
|
# "\[[0-9]+" can match two kinds of numbers: page numbers from dvipng
|
|
# and glyph numbers from mktexpk. The glyph numbers always match
|
|
# "\[[0-9]+\]" while the page number never is followed by "\]". Thus:
|
|
page_re = re.compile("\[([0-9]+)[^]]");
|
|
metrics_re = re.compile("depth=(-?[0-9]+) height=(-?[0-9]+)")
|
|
|
|
success = 0
|
|
page = ""
|
|
pos = 0
|
|
results = []
|
|
while 1:
|
|
match = page_re.search(dvipng_stdout, pos)
|
|
if match == None:
|
|
break
|
|
page = match.group(1)
|
|
pos = match.end()
|
|
match = metrics_re.search(dvipng_stdout, pos)
|
|
if match == None:
|
|
break
|
|
success = 1
|
|
|
|
# Calculate the 'ascent fraction'.
|
|
descent = float(match.group(1))
|
|
ascent = float(match.group(2))
|
|
|
|
frac = 0.5
|
|
if ascent < 0:
|
|
# This is an empty image, forbid its display
|
|
frac = -1.0
|
|
elif ascent >= 0 or descent >= 0:
|
|
if abs(ascent + descent) > 0.1:
|
|
frac = ascent / (ascent + descent)
|
|
|
|
# Sanity check
|
|
if frac < 0:
|
|
frac = 0.5
|
|
|
|
results.append((int(page), frac))
|
|
pos = match.end() + 2
|
|
|
|
if success == 0:
|
|
error("Failed to extract metrics info from dvipng")
|
|
|
|
return results
|
|
|
|
|
|
def fix_latex_file(latex_file, pdf_output):
|
|
# python 2 does not allow to declare a string as raw byte so we double
|
|
# the backslashes and remove the r preffix
|
|
def_re = re.compile(b"(\\\\newcommandx|\\\\global\\\\long\\\\def)"
|
|
b"(\\\\[a-zA-Z]+)")
|
|
|
|
tmp = tempfile.TemporaryFile()
|
|
|
|
changed = False
|
|
macros = []
|
|
for line in open(latex_file, 'rb').readlines():
|
|
if not pdf_output and line.startswith(b"\\documentclass"):
|
|
changed = True
|
|
line += b"\\PassOptionsToPackage{draft}{microtype}\n"
|
|
else:
|
|
match = def_re.match(line)
|
|
if match != None:
|
|
macroname = match.group(2)
|
|
if macroname in macros:
|
|
definecmd = match.group(1)
|
|
if definecmd == b"\\newcommandx":
|
|
changed = True
|
|
line = line.replace(definecmd, b"\\renewcommandx")
|
|
else:
|
|
macros.append(macroname)
|
|
tmp.write(line)
|
|
|
|
if changed:
|
|
copyfileobj(tmp, open(latex_file,"wb"), 1)
|
|
|
|
return changed
|
|
|
|
|
|
def convert_to_ppm_format(pngtopnm, basename):
|
|
png_file_re = re.compile("\.png$")
|
|
|
|
for png_file in glob.glob("%s*.png" % basename):
|
|
ppm_file = png_file_re.sub(".ppm", png_file)
|
|
|
|
p2p_cmd = '%s "%s"' % (pngtopnm, png_file)
|
|
p2p_status, p2p_stdout = run_command(p2p_cmd)
|
|
if p2p_status:
|
|
error("Unable to convert %s to ppm format" % png_file)
|
|
|
|
ppm = open(ppm_file, 'w')
|
|
ppm.write(p2p_stdout)
|
|
os.remove(png_file)
|
|
|
|
# Returns a tuple of:
|
|
# ps_pages: list of page indexes of pages containing PS literals
|
|
# pdf_pages: list of page indexes of pages requiring running pdflatex
|
|
# page_count: total number of pages
|
|
# pages_parameter: parameter for dvipng to exclude pages with PostScript/PDF
|
|
def find_ps_pages(dvi_file):
|
|
# latex failed
|
|
# FIXME: try with pdflatex
|
|
if not os.path.isfile(dvi_file):
|
|
error("No DVI output.")
|
|
|
|
# Check for PostScript specials in the dvi, badly supported by dvipng,
|
|
# and inclusion of PDF/PNG/JPG files.
|
|
# This is required for correct rendering of PSTricks and TikZ
|
|
dv2dt = find_exe_or_terminate(["dv2dt"])
|
|
dv2dt_call = '%s "%s"' % (dv2dt, dvi_file)
|
|
|
|
# The output from dv2dt goes to stdout
|
|
dv2dt_status, dv2dt_output = run_command(dv2dt_call)
|
|
psliteral_re = re.compile("^special[1-4] [0-9]+ '(\"|ps:)")
|
|
hyperref_re = re.compile("^special[1-4] [0-9]+ 'ps:.*/DEST pdfmark")
|
|
pdffile_re = re.compile("^special[1-4] [0-9]+ 'PSfile=.*\\.(pdf|png|jpg|jpeg|PDF|PNG|JPG|JPEG)")
|
|
|
|
# Parse the dtl file looking for PostScript specials and pdflatex files.
|
|
# Pages using PostScript specials or pdflatex files are recorded in
|
|
# ps_pages or pdf_pages, respectively, and then used to create a
|
|
# different LaTeX file for processing in legacy mode.
|
|
# If hyperref is detected, the corresponding page is recorded in pdf_pages.
|
|
page_has_ps = False
|
|
page_has_pdf = False
|
|
page_index = 0
|
|
ps_pages = []
|
|
pdf_pages = []
|
|
ps_or_pdf_pages = []
|
|
|
|
for line in dv2dt_output.split("\n"):
|
|
# New page
|
|
if line.startswith("bop"):
|
|
page_has_ps = False
|
|
page_has_pdf = False
|
|
page_index += 1
|
|
|
|
# End of page
|
|
if line.startswith("eop") and (page_has_ps or page_has_pdf):
|
|
# We save in a list all the PostScript/PDF pages
|
|
if page_has_ps:
|
|
ps_pages.append(page_index)
|
|
else:
|
|
pdf_pages.append(page_index)
|
|
ps_or_pdf_pages.append(page_index)
|
|
|
|
if psliteral_re.match(line) != None:
|
|
# Literal PostScript special detected!
|
|
# If hyperref is detected, put this page on the pdf pages list
|
|
if hyperref_re.match(line) != None:
|
|
page_has_ps = False
|
|
page_has_pdf = True
|
|
else:
|
|
page_has_ps = True
|
|
elif pdffile_re.match(line) != None:
|
|
# Inclusion of pdflatex image file detected!
|
|
page_has_pdf = True
|
|
|
|
# Create the -pp parameter for dvipng
|
|
pages_parameter = ""
|
|
if len(ps_or_pdf_pages) > 0 and len(ps_or_pdf_pages) < page_index:
|
|
# Don't process Postscript/PDF pages with dvipng by selecting the
|
|
# wanted pages through the -pp parameter. E.g., dvipng -pp 4-12,14,64
|
|
pages_parameter = " -pp "
|
|
skip = True
|
|
last = -1
|
|
|
|
# Use page ranges, as a list of pages could exceed command line
|
|
# maximum length (especially under Win32)
|
|
for index in range(1, page_index + 1):
|
|
if (not index in ps_or_pdf_pages) and skip:
|
|
# We were skipping pages but current page shouldn't be skipped.
|
|
# Add this page to -pp, it could stay alone or become the
|
|
# start of a range.
|
|
pages_parameter += str(index)
|
|
# Save the starting index to avoid things such as "11-11"
|
|
last = index
|
|
# We're not skipping anymore
|
|
skip = False
|
|
elif (index in ps_or_pdf_pages) and (not skip):
|
|
# We weren't skipping but current page should be skipped
|
|
if last != index - 1:
|
|
# If the start index of the range is the previous page
|
|
# then it's not a range
|
|
pages_parameter += "-" + str(index - 1)
|
|
|
|
# Add a separator
|
|
pages_parameter += ","
|
|
# Now we're skipping
|
|
skip = True
|
|
|
|
# Remove the trailing separator
|
|
pages_parameter = pages_parameter.rstrip(",")
|
|
# We've to manage the case in which the last page is closing a range
|
|
if (not index in ps_or_pdf_pages) and (not skip) and (last != index):
|
|
pages_parameter += "-" + str(index)
|
|
|
|
return (ps_pages, pdf_pages, page_index, pages_parameter)
|
|
|
|
def main(argv):
|
|
# Set defaults.
|
|
dpi = 128
|
|
fg_color = "000000"
|
|
bg_color = "ffffff"
|
|
bibtex = None
|
|
latex = None
|
|
lilypond = False
|
|
lilypond_book = None
|
|
output_format = "png"
|
|
script_name = argv[0]
|
|
|
|
# Parse and manipulate the command line arguments.
|
|
try:
|
|
(opts, args) = getopt.gnu_getopt(argv[1:], "dhv", ["bibtex=", "bg=",
|
|
"debug", "dpi=", "fg=", "help", "latex=", "lilypond",
|
|
"lilypond-book=", "png", "ppm", "verbose"])
|
|
except getopt.GetoptError as err:
|
|
error("%s\n%s" % (err, usage(script_name)))
|
|
|
|
opts.reverse()
|
|
for opt, val in opts:
|
|
if opt in ("-h", "--help"):
|
|
print(usage(script_name))
|
|
sys.exit(0)
|
|
elif opt == "--bibtex":
|
|
bibtex = [val]
|
|
elif opt == "--bg":
|
|
bg_color = val
|
|
elif opt in ("-d", "--debug"):
|
|
import lyxpreview_tools
|
|
lyxpreview_tools.debug = True
|
|
elif opt == "--dpi":
|
|
try:
|
|
dpi = int(val)
|
|
except:
|
|
error("Cannot convert %s to an integer value" % val)
|
|
elif opt == "--fg":
|
|
fg_color = val
|
|
elif opt == "--latex":
|
|
latex = [val]
|
|
elif opt == "--lilypond":
|
|
lilypond = True
|
|
elif opt == "--lilypond-book":
|
|
lilypond_book = [val]
|
|
elif opt in ("--png", "--ppm"):
|
|
output_format = opt[2:]
|
|
elif opt in ("-v", "--verbose"):
|
|
import lyxpreview_tools
|
|
lyxpreview_tools.verbose = True
|
|
|
|
# Determine input file
|
|
if len(args) != 1:
|
|
err = "A single input file is required, %s given" % (len(args) or "none")
|
|
error("%s\n%s" % (err, usage(script_name)))
|
|
|
|
input_path = args[0]
|
|
dir, latex_file = os.path.split(input_path)
|
|
|
|
# Echo the settings
|
|
progress("Starting %s..." % script_name)
|
|
progress("Output format: %s" % output_format)
|
|
progress("Foreground color: %s" % fg_color)
|
|
progress("Background color: %s" % bg_color)
|
|
progress("Resolution (dpi): %s" % dpi)
|
|
progress("File to process: %s" % input_path)
|
|
|
|
# Check for the input file
|
|
if not os.path.exists(input_path):
|
|
error('File "%s" not found.' % input_path)
|
|
if len(dir) != 0:
|
|
os.chdir(dir)
|
|
|
|
# For python > 2 convert strings to bytes
|
|
if not PY2:
|
|
fg_color = bytes(fg_color, 'ascii')
|
|
bg_color = bytes(bg_color, 'ascii')
|
|
|
|
fg_color_dvipng = make_texcolor(fg_color, False)
|
|
bg_color_dvipng = make_texcolor(bg_color, False)
|
|
|
|
# External programs used by the script.
|
|
latex = find_exe_or_terminate(latex or latex_commands)
|
|
bibtex = find_exe(bibtex or bibtex_commands)
|
|
if lilypond:
|
|
lilypond_book = find_exe_or_terminate(lilypond_book or
|
|
["lilypond-book --safe"])
|
|
|
|
# These flavors of latex are known to produce pdf output
|
|
pdf_output = latex in pdflatex_commands
|
|
|
|
progress("Latex command: %s" % latex)
|
|
progress("Latex produces pdf output: %s" % pdf_output)
|
|
progress("Bibtex command: %s" % bibtex)
|
|
progress("Lilypond-book command: %s" % lilypond_book)
|
|
progress("Preprocess through lilypond-book: %s" % lilypond)
|
|
progress("Altering the latex file for font size and colors")
|
|
|
|
# Make sure that multiple defined macros and the microtype package
|
|
# don't cause issues in the latex file.
|
|
fix_latex_file(latex_file, pdf_output)
|
|
|
|
if lilypond:
|
|
progress("Preprocess the latex file through %s" % lilypond_book)
|
|
if pdf_output:
|
|
lilypond_book += " --pdf"
|
|
lilypond_book += " --latex-program=%s" % latex.split()[0]
|
|
|
|
# Make a copy of the latex file
|
|
lytex_file = latex_file_re.sub(".lytex", latex_file)
|
|
shutil.copyfile(latex_file, lytex_file)
|
|
|
|
# Preprocess the latex file through lilypond-book.
|
|
lytex_status, lytex_stdout = run_tex(lilypond_book, lytex_file)
|
|
|
|
if pdf_output:
|
|
progress("Using the legacy conversion method (PDF support)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format, fg_color,
|
|
bg_color, latex, pdf_output)
|
|
|
|
# This can go once dvipng becomes widespread.
|
|
dvipng = find_exe(["dvipng"])
|
|
if dvipng == None:
|
|
progress("Using the legacy conversion method (dvipng not found)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format, fg_color,
|
|
bg_color, latex, pdf_output)
|
|
|
|
dv2dt = find_exe(["dv2dt"])
|
|
if dv2dt == None:
|
|
progress("Using the legacy conversion method (dv2dt not found)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format, fg_color,
|
|
bg_color, latex, pdf_output)
|
|
|
|
pngtopnm = ""
|
|
if output_format == "ppm":
|
|
pngtopnm = find_exe(["pngtopnm"])
|
|
if pngtopnm == None:
|
|
progress("Using the legacy conversion method (pngtopnm not found)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format,
|
|
fg_color, bg_color, latex, pdf_output)
|
|
|
|
# Compile the latex file.
|
|
error_pages = []
|
|
latex_status, latex_stdout = run_latex(latex, latex_file, bibtex)
|
|
latex_log = latex_file_re.sub(".log", latex_file)
|
|
if latex_status:
|
|
progress("Will try to recover from %s failure" % latex)
|
|
error_pages = check_latex_log(latex_log)
|
|
|
|
# The dvi output file name
|
|
dvi_file = latex_file_re.sub(".dvi", latex_file)
|
|
|
|
# If there's no DVI output, look for PDF and go to legacy or fail
|
|
if not os.path.isfile(dvi_file):
|
|
# No DVI, is there a PDF?
|
|
pdf_file = latex_file_re.sub(".pdf", latex_file)
|
|
if os.path.isfile(pdf_file):
|
|
progress("%s produced a PDF output, fallback to legacy." \
|
|
% (os.path.basename(latex)))
|
|
progress("Using the legacy conversion method (PDF support)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format,
|
|
fg_color, bg_color, latex, True)
|
|
else:
|
|
error("No DVI or PDF output. %s failed." \
|
|
% (os.path.basename(latex)))
|
|
|
|
# Look for PS literals or inclusion of pdflatex files in DVI pages
|
|
# ps_pages: list of indexes of pages containing PS literals
|
|
# pdf_pages: list of indexes of pages requiring running pdflatex
|
|
# page_count: total number of pages
|
|
# pages_parameter: parameter for dvipng to exclude pages with PostScript
|
|
(ps_pages, pdf_pages, page_count, pages_parameter) = find_ps_pages(dvi_file)
|
|
|
|
# If all pages need PostScript or pdflatex, directly use the legacy method.
|
|
if len(ps_pages) == page_count:
|
|
progress("Using the legacy conversion method (PostScript support)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format, fg_color,
|
|
bg_color, latex, pdf_output)
|
|
elif len(pdf_pages) == page_count:
|
|
progress("Using the legacy conversion method (PDF support)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format, fg_color,
|
|
bg_color, "pdflatex", True)
|
|
|
|
# Retrieve resolution
|
|
resolution = extract_resolution(latex_log, dpi)
|
|
|
|
# Run the dvi file through dvipng.
|
|
dvipng_call = '%s -Ttight -depth -height -D %d -fg "%s" -bg "%s" %s "%s"' \
|
|
% (dvipng, resolution, fg_color_dvipng, bg_color_dvipng, pages_parameter, dvi_file)
|
|
dvipng_status, dvipng_stdout = run_command(dvipng_call)
|
|
|
|
if dvipng_status:
|
|
warning("%s failed to generate images from %s... fallback to legacy method" \
|
|
% (os.path.basename(dvipng), dvi_file))
|
|
progress("Using the legacy conversion method (dvipng failed)")
|
|
return legacy_conversion_step1(latex_file, dpi, output_format, fg_color,
|
|
bg_color, latex, pdf_output)
|
|
|
|
# Extract metrics info from dvipng_stdout.
|
|
metrics_file = latex_file_re.sub(".metrics", latex_file)
|
|
dvipng_metrics = extract_metrics_info(dvipng_stdout)
|
|
|
|
# If some pages require PostScript pass them to legacy method
|
|
if len(ps_pages) > 0:
|
|
# Create a new LaTeX file just for the snippets needing
|
|
# the legacy method
|
|
legacy_latex_file = latex_file_re.sub("_legacy.tex", latex_file)
|
|
filter_pages(latex_file, legacy_latex_file, ps_pages)
|
|
|
|
# Pass the new LaTeX file to the legacy method
|
|
progress("Pages %s include postscript specials" % ps_pages)
|
|
progress("Using the legacy conversion method (PostScript support)")
|
|
legacy_status, legacy_metrics = legacy_conversion_step1(legacy_latex_file,
|
|
dpi, output_format, fg_color, bg_color, latex, pdf_output, True)
|
|
|
|
# Now we need to mix metrics data from dvipng and the legacy method
|
|
original_bitmap = latex_file_re.sub("%d." + output_format, legacy_latex_file)
|
|
destination_bitmap = latex_file_re.sub("%d." + output_format, latex_file)
|
|
|
|
# Join metrics from dvipng and legacy, and rename legacy bitmaps
|
|
join_metrics_and_rename(dvipng_metrics, legacy_metrics, ps_pages,
|
|
original_bitmap, destination_bitmap)
|
|
|
|
# If some pages require running pdflatex pass them to legacy method
|
|
if len(pdf_pages) > 0:
|
|
# Create a new LaTeX file just for the snippets needing
|
|
# the legacy method
|
|
legacy_latex_file = latex_file_re.sub("_legacy.tex", latex_file)
|
|
filter_pages(latex_file, legacy_latex_file, pdf_pages)
|
|
|
|
# Pass the new LaTeX file to the legacy method
|
|
progress("Pages %s require processing with pdflatex" % pdf_pages)
|
|
progress("Using the legacy conversion method (PDF support)")
|
|
legacy_status, legacy_metrics = legacy_conversion_step1(legacy_latex_file,
|
|
dpi, output_format, fg_color, bg_color, "pdflatex", True, True)
|
|
|
|
# Now we need to mix metrics data from dvipng and the legacy method
|
|
original_bitmap = latex_file_re.sub("%d." + output_format, legacy_latex_file)
|
|
destination_bitmap = latex_file_re.sub("%d." + output_format, latex_file)
|
|
|
|
# Join metrics from dvipng and legacy, and rename legacy bitmaps
|
|
join_metrics_and_rename(dvipng_metrics, legacy_metrics, pdf_pages,
|
|
original_bitmap, destination_bitmap)
|
|
|
|
# Invalidate metrics for pages that produced errors
|
|
if len(error_pages) > 0:
|
|
error_count = 0
|
|
for index in error_pages:
|
|
if index not in ps_pages and index not in pdf_pages:
|
|
dvipng_metrics.pop(index - 1)
|
|
dvipng_metrics.insert(index - 1, (index, -1.0))
|
|
error_count += 1
|
|
if error_count:
|
|
warning("Failed to produce %d preview snippet(s)" % error_count)
|
|
|
|
# Convert images to ppm format if necessary.
|
|
if output_format == "ppm":
|
|
convert_to_ppm_format(pngtopnm, latex_file_re.sub("", latex_file))
|
|
|
|
# Actually create the .metrics file
|
|
write_metrics_info(dvipng_metrics, metrics_file)
|
|
|
|
return (0, dvipng_metrics)
|
|
|
|
if __name__ == "__main__":
|
|
sys.exit(main(sys.argv)[0])
|