-# -*- coding: utf-8 -*-
-
# file lyxpreview2bitmap.py
# This file is part of LyX, the document processor.
# Licence details can be found in the file COPYING.
# Moreover dvipng can't work with PDF files, so, if the CONVERTER
# paramter is pdflatex we have to fallback to legacy route (step 2).
-import getopt, glob, os, re, shutil, string, sys
-from legacy_lyxpreview2ppm import legacy_conversion_step1
+import getopt, glob, os, re, shutil, sys, tempfile
+
+import lyxpreview_tools
-from lyxpreview_tools import bibtex_commands, copyfileobj, error, \
- filter_pages, find_exe, find_exe_or_terminate, join_metrics_and_rename, \
- latex_commands, latex_file_re, make_texcolor, mkstemp, pdflatex_commands, \
- progress, run_command, run_latex, run_tex, warning, write_metrics_info
+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
def usage(prog_name):
msg = """
# "\[[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]+)[^]]");
+ page_re = re.compile(r"\[([0-9]+)[^]]");
metrics_re = re.compile("depth=(-?[0-9]+) height=(-?[0-9]+)")
success = 0
success = 1
# Calculate the 'ascent fraction'.
- descent = string.atof(match.group(1))
- ascent = string.atof(match.group(2))
+ descent = float(match.group(1))
+ ascent = float(match.group(2))
frac = 0.5
if ascent < 0:
return results
-def fix_latex_file(latex_file):
- documentclass_re = re.compile("(\\\\documentclass\[)(1[012]pt,?)(.+)")
- newcommandx_re = re.compile("^(\\\\newcommandx)(.+)")
-
- tmp = mkstemp()
+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]+)")
- changed = 0
- for line in open(latex_file, 'r').readlines():
- match = documentclass_re.match(line)
- if match != None:
- changed = 1
- tmp.write("%s%s\n" % (match.group(1), match.group(3)))
- continue
-
- match = newcommandx_re.match(line)
- if match == None:
- tmp.write(line)
- continue
+ tmp = tempfile.TemporaryFile()
- changed = 1
- tmp.write("\\providecommandx%s\n" % match.group(2))
+ 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)
def convert_to_ppm_format(pngtopnm, basename):
- png_file_re = re.compile("\.png$")
+ png_file_re = re.compile(r"\.png$")
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_cmd = f'{pngtopnm} "{png_file}"'
p2p_status, p2p_stdout = run_command(p2p_cmd)
if p2p_status:
error("Unable to convert %s to ppm format" % png_file)
error("No DVI output.")
# Check for PostScript specials in the dvi, badly supported by dvipng,
- # and inclusion of PDF/PNG/JPG files.
+ # 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)
+ dv2dt_call = f'{dv2dt} "{dvi_file}"'
# The output from dv2dt goes to stdout
dv2dt_status, dv2dt_output = run_command(dv2dt_call)
# Use page ranges, as a list of pages could exceed command line
# maximum length (especially under Win32)
- for index in xrange(1, page_index + 1):
+ 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
(opts, args) = getopt.gnu_getopt(argv[1:], "dhv", ["bibtex=", "bg=",
"debug", "dpi=", "fg=", "help", "latex=", "lilypond",
"lilypond-book=", "png", "ppm", "verbose"])
- except getopt.GetoptError, err:
- error("%s\n%s" % (err, usage(script_name)))
+ except getopt.GetoptError as err:
+ error(f"{err}\n{usage(script_name)}")
opts.reverse()
for opt, val in opts:
if opt in ("-h", "--help"):
- print usage(script_name)
+ 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 = string.atoi(val)
+ dpi = int(val)
except:
error("Cannot convert %s to an integer value" % val)
elif opt == "--fg":
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)))
+ error(f"{err}\n{usage(script_name)}")
input_path = args[0]
dir, latex_file = os.path.split(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)
+
+ if lyxpreview_tools.verbose:
+ f_out = open('verbose.txt', 'a')
+ sys.stdout = f_out
+ sys.stderr = f_out
+
# Echo the settings
+ progress("Running Python %s" % str(sys.version_info[:3]))
progress("Starting %s..." % script_name)
+ if os.name == "nt":
+ progress("Use win32_modules: %d" % lyxpreview_tools.use_win32_modules)
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)
+ 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)
+ fg_color_dvipng = make_texcolor(fg_color, False).decode('ascii')
+ bg_color_dvipng = make_texcolor(bg_color, False).decode('ascii')
# External programs used by the script.
latex = find_exe_or_terminate(latex or latex_commands)
progress("Preprocess through lilypond-book: %s" % lilypond)
progress("Altering the latex file for font size and colors")
- # Omit font size specification in latex file and make sure multiple
- # defined macros are not an issue.
- fix_latex_file(latex_file)
+ # 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)
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:
- warning("trying to recover from failed compilation")
+ 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)
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, dpi, fg_color_dvipng, bg_color_dvipng, pages_parameter, dvi_file)
+ % (dvipng, resolution, fg_color_dvipng, bg_color_dvipng, pages_parameter, dvi_file)
dvipng_status, dvipng_stdout = run_command(dvipng_call)
if dvipng_status:
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))