def legacy_conversion_step2(latex_file, dpi, output_format, skipMetrics = False):
# External programs used by the script.
dvips = find_exe_or_terminate(["dvips"], path)
gs = find_exe_or_terminate(["gswin32c", "gs"], path)
pnmcrop = find_exe(["pnmcrop"], path)
# Run the dvi file through dvips.
dvi_file = latex_file_re.sub(".dvi", latex_file)
ps_file = latex_file_re.sub(".ps", latex_file)
pdf_file = latex_file_re.sub(".pdf", latex_file)
dvips_call = '%s -i -o "%s" "%s"' % (dvips, ps_file, dvi_file)
dvips_failed = False
dvips_status, dvips_stdout = run_command(dvips_call)
if dvips_status != None:
warning('Failed: %s %s ... looking for PDF' \
% (os.path.basename(dvips), dvi_file))
dvips_failed = True
# Extract resolution data for gs from the log file.
log_file = latex_file_re.sub(".log", latex_file)
resolution = extract_resolution(log_file, dpi)
# Older versions of gs have problems with a large degree of
# anti-aliasing at high resolutions
alpha = 4
if resolution > 150:
alpha = 2
gs_device = "png16m"
gs_ext = "png"
if output_format == "ppm":
gs_device = "pnmraw"
gs_ext = "ppm"
# Extract the metrics from the log file
legacy_metrics = legacy_extract_metrics_info(log_file)
# List of pages which failed to produce a correct output
failed_pages = []
# Generate the bitmap images
if dvips_failed:
# dvips failed, maybe there's a PDF, try to produce bitmaps
gs_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%s"' \
% (gs, gs_device, latex_file_re.sub("", latex_file), \
gs_ext, alpha, alpha, resolution, pdf_file)
gs_status, gs_stdout = run_command(gs_call)
if gs_status != None:
error("Failed: %s %s" % (os.path.basename(gs), ps_file))
else:
# Model for calling gs on each file
gs_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%%s"' \
% (gs, gs_device, latex_file_re.sub("", latex_file), \
gs_ext, alpha, alpha, resolution)
i = 0
# Collect all the PostScript files (like *.001, *.002, ...)
ps_files = glob.glob("%s.[0-9][0-9][0-9]" % latex_file_re.sub("", latex_file))
ps_files.sort()
# Call GhostScript for each file
for file in ps_files:
i = i + 1
gs_status, gs_stdout = run_command(gs_call % (i, file))
if gs_status != None:
# gs failed, keep track of this
failed_pages.append(i)
# Pass failed pages to pdflatex
if len(failed_pages) > 0:
legacy_conversion_pdflatex(latex_file, failed_pages, legacy_metrics, gs,
gs_device, gs_ext, alpha, resolution, output_format)
# Crop the images
if pnmcrop != None:
crop_files(pnmcrop, latex_file_re.sub("", latex_file))
# Allow to skip .metrics creation for custom management
# (see the dvipng method)
if not skipMetrics:
# Extract metrics info from the log file.
metrics_file = latex_file_re.sub(".metrics", latex_file)
write_metrics_info(legacy_metrics, metrics_file)
return (0, legacy_metrics)
def legacy_conversion_step3(latex_file, dpi, output_format, dvips_failed, skipMetrics = False):
# External programs used by the script.
gs = find_exe_or_terminate(["gswin32c", "gswin64c", "gs"])
pnmcrop = find_exe(["pnmcrop"])
pdftocairo = find_exe(["pdftocairo"])
epstopdf = find_exe(["epstopdf"])
use_pdftocairo = pdftocairo != None and output_format == "png"
if use_pdftocairo:
conv = pdftocairo
else:
conv = gs
# Files to process
pdf_file = latex_file_re.sub(".pdf", latex_file)
ps_file = latex_file_re.sub(".ps", latex_file)
# The latex file name without extension
latex_file_root = latex_file_re.sub("", latex_file)
# Extract resolution data for the converter from the log file.
log_file = latex_file_re.sub(".log", latex_file)
resolution = extract_resolution(log_file, dpi)
# Check whether some pages produced errors
error_pages = check_latex_log(log_file)
# Older versions of gs have problems with a large degree of
# anti-aliasing at high resolutions
alpha = 4
if resolution > 150:
alpha = 2
gs_device = "png16m"
gs_ext = "png"
if output_format == "ppm":
gs_device = "pnmraw"
gs_ext = "ppm"
# Extract the metrics from the log file
legacy_metrics = legacy_extract_metrics_info(log_file)
# List of pages which failed to produce a correct output
failed_pages = []
# Generate the bitmap images
if dvips_failed:
# dvips failed, maybe there's a PDF, try to produce bitmaps
if use_pdftocairo:
conv_call = '%s -png -transp -r %d "%s" "%s"' \
% (pdftocairo, resolution, pdf_file, latex_file_root)
conv_status, conv_stdout = run_command(conv_call)
if not conv_status:
seqnum_re = re.compile("-([0-9]+)")
for name in glob.glob("%s-*.png" % latex_file_root):
match = seqnum_re.search(name)
if match != None:
new_name = seqnum_re.sub(str(int(match.group(1))), name)
os.rename(name, new_name)
else:
conv_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%s"' \
% (gs, gs_device, latex_file_root, \
gs_ext, alpha, alpha, resolution, pdf_file)
conv_status, conv_stdout = run_command(conv_call)
if conv_status:
error("Failed: %s %s" % (os.path.basename(conv), pdf_file))
else:
# Model for calling the converter on each file
if use_pdftocairo and epstopdf != None:
conv_call = '%s -png -transp -singlefile -r %d "%%s" "%s%%d"' \
% (pdftocairo, resolution, latex_file_root)
else:
conv_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%%s"' \
% (gs, gs_device, latex_file_root, \
gs_ext, alpha, alpha, resolution)
i = 0
# Collect all the PostScript files (like *.001, *.002, ...)
ps_files = glob.glob("%s.[0-9][0-9][0-9]" % latex_file_root)
ps_files.sort()
# Call the converter for each file
for file in ps_files:
i = i + 1
progress("Processing page %s, file %s" % (i, file))
if use_pdftocairo and epstopdf != None:
conv_name = "epstopdf"
conv_status, conv_stdout = run_command("%s --outfile=%s.pdf %s"
% (epstopdf, file, file))
if not conv_status:
conv_name = "pdftocairo"
file = file + ".pdf"
conv_status, conv_stdout = run_command(conv_call % (file, i))
else:
conv_name = "ghostscript"
conv_status, conv_stdout = run_command(conv_call % (i, file))
if conv_status:
# The converter failed, keep track of this
warning("%s failed on page %s, file %s" % (conv_name, i, file))
failed_pages.append(i)
# Pass failed pages to pdflatex
if len(failed_pages) > 0:
warning("Now trying to obtain failed previews through pdflatex")
legacy_conversion_pdflatex(latex_file, failed_pages, legacy_metrics,
use_pdftocairo, conv, gs_device, gs_ext, alpha, resolution,
output_format)
# Invalidate metrics for pages that produced errors
if len(error_pages) > 0:
for index in error_pages:
if index not in failed_pages:
legacy_metrics.pop(index - 1)
legacy_metrics.insert(index - 1, (index, -1.0))
# Crop the ppm images
if pnmcrop != None and output_format == "ppm":
crop_files(pnmcrop, latex_file_root)
# Allow to skip .metrics creation for custom management
# (see the dvipng method)
if not skipMetrics:
# Extract metrics info from the log file.
metrics_file = latex_file_re.sub(".metrics", latex_file)
write_metrics_info(legacy_metrics, metrics_file)
return (0, legacy_metrics)
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:
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))
# 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])
# 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)
# 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])
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)
# 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('debug.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)
# 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)
# For python > 2 convert bytes to string
if not PY2:
fg_color_dvipng = fg_color_dvipng.decode('ascii')
bg_color_dvipng = bg_color_dvipng.decode('ascii')
# 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)
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"):
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"):
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)
# 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)
# 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)
# For python > 2 convert bytes to string
if not PY2:
fg_color_dvipng = fg_color_dvipng.decode('ascii')
bg_color_dvipng = bg_color_dvipng.decode('ascii')
# 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)
def legacy_conversion_step3(latex_file,
dpi,
output_format,
dvips_failed,
skipMetrics=False):
# External programs used by the script.
gs = find_exe_or_terminate(["gswin32c", "gswin64c", "gs"])
pnmcrop = find_exe(["pnmcrop"])
pdftocairo = find_exe(["pdftocairo"])
epstopdf = find_exe(["epstopdf"])
use_pdftocairo = pdftocairo != None and output_format == "png"
if use_pdftocairo and os.name == 'nt':
# On Windows, check for png support (see #10718)
conv_status, conv_stdout = run_command("%s --help" % pdftocairo)
use_pdftocairo = '-png' in conv_stdout
if use_pdftocairo:
conv = pdftocairo
else:
conv = gs
# Files to process
pdf_file = latex_file_re.sub(".pdf", latex_file)
ps_file = latex_file_re.sub(".ps", latex_file)
# The latex file name without extension
latex_file_root = latex_file_re.sub("", latex_file)
# Extract resolution data for the converter from the log file.
log_file = latex_file_re.sub(".log", latex_file)
resolution = extract_resolution(log_file, dpi)
# Check whether some pages produced errors
error_pages = check_latex_log(log_file)
# Older versions of gs have problems with a large degree of
# anti-aliasing at high resolutions
alpha = 4
if resolution > 150:
alpha = 2
gs_device = "png16m"
gs_ext = "png"
if output_format == "ppm":
gs_device = "pnmraw"
gs_ext = "ppm"
# Extract the metrics from the log file
legacy_metrics = legacy_extract_metrics_info(log_file)
# List of pages which failed to produce a correct output
failed_pages = []
# Generate the bitmap images
if dvips_failed:
# dvips failed, maybe there's a PDF, try to produce bitmaps
if use_pdftocairo:
conv_call = '%s -png -transp -r %d "%s" "%s"' \
% (pdftocairo, resolution, pdf_file, latex_file_root)
conv_status, conv_stdout = run_command(conv_call)
if not conv_status:
seqnum_re = re.compile("-([0-9]+)")
for name in glob.glob("%s-*.png" % latex_file_root):
match = seqnum_re.search(name)
if match != None:
new_name = seqnum_re.sub(str(int(match.group(1))),
name)
os.rename(name, new_name)
else:
conv_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%s"' \
% (gs, gs_device, latex_file_root, \
gs_ext, alpha, alpha, resolution, pdf_file)
conv_status, conv_stdout = run_command(conv_call)
if conv_status:
error("Failed: %s %s" % (os.path.basename(conv), pdf_file))
else:
# Model for calling the converter on each file
if use_pdftocairo and epstopdf != None:
conv_call = '%s -png -transp -singlefile -r %d "%%s" "%s%%d"' \
% (pdftocairo, resolution, latex_file_root)
else:
conv_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%%s"' \
% (gs, gs_device, latex_file_root, \
gs_ext, alpha, alpha, resolution)
i = 0
# Collect all the PostScript files (like *.001, *.002, ...)
ps_files = glob.glob("%s.[0-9][0-9][0-9]" % latex_file_root)
ps_files.sort()
# Call the converter for each file
for file in ps_files:
i = i + 1
progress("Processing page %s, file %s" % (i, file))
if use_pdftocairo and epstopdf != None:
conv_name = "epstopdf"
conv_status, conv_stdout = run_command(
"%s --outfile=%s.pdf %s" % (epstopdf, file, file))
if not conv_status:
conv_name = "pdftocairo"
file = file + ".pdf"
conv_status, conv_stdout = run_command(conv_call %
(file, i))
else:
conv_name = "ghostscript"
conv_status, conv_stdout = run_command(conv_call % (i, file))
if conv_status:
# The converter failed, keep track of this
warning("%s failed on page %s, file %s" % (conv_name, i, file))
failed_pages.append(i)
# Pass failed pages to pdflatex
if len(failed_pages) > 0:
warning("Now trying to obtain failed previews through pdflatex")
error_count = legacy_conversion_pdflatex(latex_file, failed_pages,
legacy_metrics,
use_pdftocairo, conv,
gs_device, gs_ext, alpha,
resolution, output_format)
else:
error_count = 0
# Invalidate metrics for pages that produced errors
if len(error_pages) > 0:
for index in error_pages:
if index not in failed_pages:
legacy_metrics.pop(index - 1)
legacy_metrics.insert(index - 1, (index, -1.0))
error_count += 1
# Crop the ppm images
if pnmcrop != None and output_format == "ppm":
crop_files(pnmcrop, latex_file_root)
# Allow to skip .metrics creation for custom management
# (see the dvipng method)
if not skipMetrics:
# Extract metrics info from the log file.
metrics_file = latex_file_re.sub(".metrics", latex_file)
write_metrics_info(legacy_metrics, metrics_file)
if error_count:
warning("Failed to produce %d preview snippet(s)" % error_count)
return (0, legacy_metrics)
def legacy_conversion_step3(latex_file,
dpi,
output_format,
dvips_failed,
skipMetrics=False):
# External programs used by the script.
gs = find_exe_or_terminate(["gswin32c", "gswin64c", "gs"])
pnmcrop = find_exe(["pnmcrop"])
# Files to process
pdf_file = latex_file_re.sub(".pdf", latex_file)
ps_file = latex_file_re.sub(".ps", latex_file)
# Extract resolution data for gs from the log file.
log_file = latex_file_re.sub(".log", latex_file)
resolution = extract_resolution(log_file, dpi)
# Older versions of gs have problems with a large degree of
# anti-aliasing at high resolutions
alpha = 4
if resolution > 150:
alpha = 2
gs_device = "png16m"
gs_ext = "png"
if output_format == "ppm":
gs_device = "pnmraw"
gs_ext = "ppm"
# Extract the metrics from the log file
legacy_metrics = legacy_extract_metrics_info(log_file)
# List of pages which failed to produce a correct output
failed_pages = []
# Generate the bitmap images
if dvips_failed:
# dvips failed, maybe there's a PDF, try to produce bitmaps
gs_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%s"' \
% (gs, gs_device, latex_file_re.sub("", latex_file), \
gs_ext, alpha, alpha, resolution, pdf_file)
gs_status, gs_stdout = run_command(gs_call)
if gs_status:
error("Failed: %s %s" % (os.path.basename(gs), ps_file))
else:
# Model for calling gs on each file
gs_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
'-dGraphicsAlphaBit=%d -dTextAlphaBits=%d ' \
'-r%f "%%s"' \
% (gs, gs_device, latex_file_re.sub("", latex_file), \
gs_ext, alpha, alpha, resolution)
i = 0
# Collect all the PostScript files (like *.001, *.002, ...)
ps_files = glob.glob("%s.[0-9][0-9][0-9]" %
latex_file_re.sub("", latex_file))
ps_files.sort()
# Call GhostScript for each file
for file in ps_files:
i = i + 1
progress("Processing page %s, file %s" % (i, file))
gs_status, gs_stdout = run_command(gs_call % (i, file))
if gs_status:
# gs failed, keep track of this
warning("Ghostscript failed on page %s, file %s" % (i, file))
failed_pages.append(i)
# Pass failed pages to pdflatex
if len(failed_pages) > 0:
legacy_conversion_pdflatex(latex_file, failed_pages, legacy_metrics,
gs, gs_device, gs_ext, alpha, resolution,
output_format)
# Crop the images
if pnmcrop != None:
crop_files(pnmcrop, latex_file_re.sub("", latex_file))
# Allow to skip .metrics creation for custom management
# (see the dvipng method)
if not skipMetrics:
# Extract metrics info from the log file.
metrics_file = latex_file_re.sub(".metrics", latex_file)
write_metrics_info(legacy_metrics, metrics_file)
return (0, legacy_metrics)
def main(argv):
# Parse and manipulate the command line arguments.
if len(argv) != 6 and len(argv) != 7:
error(usage(argv[0]))
output_format = string.lower(argv[1])
dir, latex_file = os.path.split(argv[2])
if len(dir) != 0:
os.chdir(dir)
dpi = string.atoi(argv[3])
fg_color = make_texcolor(argv[4], False)
bg_color = make_texcolor(argv[5], False)
fg_color_gr = make_texcolor(argv[4], True)
bg_color_gr = make_texcolor(argv[5], True)
# External programs used by the script.
if len(argv) == 7:
latex = argv[6]
else:
latex = find_exe_or_terminate(["latex", "pplatex", "platex", "latex2e"], path)
# Omit font size specification in latex file.
fix_latex_file(latex_file)
# This can go once dvipng becomes widespread.
dvipng = find_exe(["dvipng"], path)
if dvipng == None:
# The data is input to legacy_conversion in as similar
# as possible a manner to that input to the code used in
# LyX 1.3.x.
vec = [ argv[0], argv[2], argv[3], argv[1], argv[4], argv[5], latex ]
return legacy_conversion(vec)
pngtopnm = ""
if output_format == "ppm":
pngtopnm = find_exe_or_terminate(["pngtopnm"], path)
# Move color information for PDF into the latex file.
if not color_pdf(latex_file, bg_color_gr, fg_color_gr):
error("Unable to move color info into the latex file")
# Compile the latex file.
latex_call = '%s "%s"' % (latex, latex_file)
latex_status, latex_stdout = run_command(latex_call)
if latex_status != None:
warning("%s had problems compiling %s" \
% (os.path.basename(latex), latex_file))
if latex == "xelatex":
warning("Using XeTeX")
# FIXME: skip unnecessary dvips trial in legacy_conversion_step2
return legacy_conversion_step2(latex_file, dpi, output_format)
# 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):
warning("%s produced a PDF output, fallback to legacy." % \
(os.path.basename(latex)))
return legacy_conversion_step2(latex_file, dpi, output_format)
else:
error("No DVI or PDF output. %s failed." \
% (os.path.basename(latex)))
# Look for PS literals in DVI pages
# ps_pages: list of page indexes of pages containing PS literals
# page_count: total number of pages
# pages_parameter: parameter for dvipng to exclude pages with PostScript
(ps_pages, page_count, pages_parameter) = find_ps_pages(dvi_file)
# If all pages need PostScript, directly use the legacy method.
if len(ps_pages) == page_count:
vec = [argv[0], argv[2], argv[3], argv[1], argv[4], argv[5], latex]
return legacy_conversion(vec)
# Run the dvi file through dvipng.
dvipng_call = '%s -Ttight -depth -height -D %d -fg "%s" -bg "%s" %s "%s"' \
% (dvipng, dpi, fg_color, bg_color, pages_parameter, dvi_file)
dvipng_status, dvipng_stdout = run_command(dvipng_call)
if dvipng_status != None:
warning("%s failed to generate images from %s... fallback to legacy method" \
% (os.path.basename(dvipng), dvi_file))
# FIXME: skip unnecessary dvips trial in legacy_conversion_step2
return legacy_conversion_step2(latex_file, dpi, output_format)
# 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
vec = [ argv[0], latex_file_re.sub("_legacy.tex", argv[2]), \
argv[3], argv[1], argv[4], argv[5], latex ]
legacy_metrics = legacy_conversion(vec, True)[1]
# 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)
# 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)
def main(argv):
# Parse and manipulate the command line arguments.
if len(argv) != 6 and len(argv) != 7:
error(usage(argv[0]))
output_format = string.lower(argv[1])
dir, latex_file = os.path.split(argv[2])
if len(dir) != 0:
os.chdir(dir)
dpi = string.atoi(argv[3])
fg_color = make_texcolor(argv[4], False)
bg_color = make_texcolor(argv[5], False)
fg_color_gr = make_texcolor(argv[4], True)
bg_color_gr = make_texcolor(argv[5], True)
# External programs used by the script.
path = string.split(os.environ["PATH"], os.pathsep)
if len(argv) == 7:
latex = argv[6]
else:
latex = find_exe_or_terminate(["latex", "pplatex", "platex", "latex2e"], path)
lilypond_book = find_exe_or_terminate(["lilypond-book"], path)
# Omit font size specification in latex file.
fix_latex_file(latex_file)
# Make a copy of the latex file
lytex_file = latex_file_re.sub(".lytex", latex_file)
shutil.copyfile(latex_file, lytex_file)
# Determine whether we need pdf or eps output
pdf_output = latex in ["lualatex", "pdflatex", "xelatex"]
# Preprocess the latex file through lilypond-book.
if pdf_output:
lytex_call = '%s --safe --pdf --latex-program=%s "%s"' % (lilypond_book, latex, lytex_file)
else:
lytex_call = '%s --safe --latex-program=%s "%s"' % (lilypond_book, latex, lytex_file)
lytex_status, lytex_stdout = run_command(lytex_call)
if lytex_status != None:
warning("%s failed to compile %s" \
% (os.path.basename(lilypond_book), lytex_file))
warning(lytex_stdout)
# This can go once dvipng becomes widespread.
dvipng = find_exe(["dvipng"], path)
if dvipng == None:
# The data is input to legacy_conversion in as similar
# as possible a manner to that input to the code used in
# LyX 1.3.x.
vec = [ argv[0], argv[2], argv[3], argv[1], argv[4], argv[5], latex ]
return legacy_conversion(vec)
pngtopnm = ""
if output_format == "ppm":
pngtopnm = find_exe_or_terminate(["pngtopnm"], path)
# Move color information for PDF into the latex file.
if not color_pdf(latex_file, bg_color_gr, fg_color_gr):
error("Unable to move color info into the latex file")
# Compile the latex file.
latex_call = '%s "%s"' % (latex, latex_file)
latex_status, latex_stdout = run_command(latex_call)
if latex_status != None:
warning("%s had problems compiling %s" \
% (os.path.basename(latex), latex_file))
warning(latex_stdout)
if latex == "xelatex":
warning("Using XeTeX")
# FIXME: skip unnecessary dvips trial in legacy_conversion_step2
return legacy_conversion_step2(latex_file, dpi, output_format)
# The dvi output file name
dvi_file = latex_file_re.sub(".dvi", latex_file)
# Check for PostScript specials in the dvi, badly supported by dvipng
# This is required for correct rendering of PSTricks and TikZ
dv2dt = find_exe_or_terminate(["dv2dt"], path)
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:)")
# Parse the dtl file looking for PostScript specials.
# Pages using PostScript specials are recorded in ps_pages and then
# used to create a different LaTeX file for processing in legacy mode.
page_has_ps = False
page_index = 0
ps_pages = []
for line in dv2dt_output.split("\n"):
# New page
if line.startswith("bop"):
page_has_ps = False
page_index += 1
# End of page
if line.startswith("eop") and page_has_ps:
# We save in a list all the PostScript pages
ps_pages.append(page_index)
if psliteral_re.match(line) != None:
# Literal PostScript special detected!
page_has_ps = True
pages_parameter = ""
if len(ps_pages) == page_index:
# All pages need PostScript, so directly use the legacy method.
vec = [argv[0], argv[2], argv[3], argv[1], argv[4], argv[5], latex]
return legacy_conversion(vec)
elif len(ps_pages) > 0:
# Don't process Postscript 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 xrange(1, page_index + 1):
if (not index in ps_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_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_pages) and (not skip) and (last != index):
pages_parameter += "-" + str(index)
# Run the dvi file through dvipng.
dvipng_call = '%s -Ttight -depth -height -D %d -fg "%s" -bg "%s" %s "%s"' \
% (dvipng, dpi, fg_color, bg_color, pages_parameter, dvi_file)
dvipng_status, dvipng_stdout = run_command(dvipng_call)
if dvipng_status != None:
warning("%s failed to generate images from %s ... looking for PDF" \
% (os.path.basename(dvipng), dvi_file))
# FIXME: skip unnecessary dvips trial in legacy_conversion_step2
return legacy_conversion_step2(latex_file, dpi, output_format)
if len(ps_pages) > 0:
# Some pages require PostScript.
# Create a new LaTeX file just for the snippets needing
# the legacy method
original_latex = open(latex_file, "r")
legacy_latex_file = latex_file_re.sub("_legacy.tex", latex_file)
legacy_latex = open(legacy_latex_file, "w")
page_index = 0
skip_page = False
for line in original_latex:
if line.startswith("\\begin{preview}"):
page_index += 1
# Skips all pages processed by dvipng
skip_page = page_index not in ps_pages
if not skip_page:
legacy_latex.write(line)
if line.startswith("\\end{preview}"):
skip_page = False
legacy_latex.close()
original_latex.close()
# Pass the new LaTeX file to the legacy method
vec = [ argv[0], latex_file_re.sub("_legacy.tex", argv[2]), \
argv[3], argv[1], argv[4], argv[5], latex ]
legacy_conversion(vec, True)
# Now we need to mix metrics data from dvipng and the legacy method
metrics_file = latex_file_re.sub(".metrics", latex_file)
dvipng_metrics = extract_metrics_info(dvipng_stdout)
legacy_metrics = legacy_extract_metrics_info(latex_file_re.sub("_legacy.log", latex_file))
# Check whether a page is present in dvipng_metrics, otherwise
# add it getting the metrics from legacy_metrics
legacy_index = -1;
for i in range(page_index):
# If we exceed the array bounds or the dvipng_metrics doesn't
# match the current one, this page belongs to the legacy method
if (i > len(dvipng_metrics) - 1) or (dvipng_metrics[i][0] != str(i + 1)):
legacy_index += 1
# Add this metric from the legacy output
dvipng_metrics.insert(i, (str(i + 1), legacy_metrics[legacy_index][1]))
# Legacy output filename
legacy_output = os.path.join(dir, latex_file_re.sub("_legacy%s.%s" %
(legacy_metrics[legacy_index][0], output_format), latex_file))
# Check whether legacy method actually created the file
if os.path.isfile(legacy_output):
# Rename the file by removing the "_legacy" suffix
# and adjusting the index
bitmap_output = os.path.join(dir, latex_file_re.sub("%s.%s" %
(str(i + 1), output_format), latex_file))
os.rename(legacy_output, bitmap_output)
# Actually create the .metrics file
write_metrics_info(dvipng_metrics, metrics_file)
else:
# Extract metrics info from dvipng_stdout.
# In this case we just used dvipng, so no special metrics
# handling is needed.
metrics_file = latex_file_re.sub(".metrics", latex_file)
write_metrics_info(extract_metrics_info(dvipng_stdout), metrics_file)
# Convert images to ppm format if necessary.
if output_format == "ppm":
convert_to_ppm_format(pngtopnm, latex_file_re.sub("", latex_file))
return 0
