# [legacy_conversion_pdflatex]
# 5) Keep track of pages on which gs failed and pass them to pdflatex
# 6) Call gs on the PDF output from pdflatex to produce bitmaps
-# 7) Extract and write to file (or return to lyxpreview2bitmap)
+# 7) Extract and write to file (or return to lyxpreview2bitmap)
# metrics from both methods (standard and pdflatex)
# The script uses the old dvi->ps->png conversion route,
# This script also generates bitmaps from PDF created by a call to
# lyxpreview2bitmap.py passing "pdflatex" to the CONVERTER parameter
# (step 3).
-# Finally, there's also has a fallback method based on pdflatex, which
+# Finally, there's also has a fallback method based on pdflatex, which
# is required in certain cases, if hyperref is active for instance,
# (step 5, 6).
# If possible, dvipng should be used, as it's much faster.
path = string.split(os.environ["PATH"], os.pathsep)
def usage(prog_name):
- return "Usage: %s <latex file> <dpi> ppm <fg color> <bg color>\n"\
- "\twhere the colors are hexadecimal strings, eg 'faf0e6'"\
+ return "Usage: %s <latex file> <dpi> ppm <fg color> <bg color>\n" \
+ "\twhere the colors are hexadecimal strings, eg 'faf0e6'" \
% prog_name
# Returns a list of tuples containing page number and ascent fraction
# the calling function will act on the value of 'success'.
warning('Warning in legacy_extract_metrics_info! Unable to open "%s"' % log_file)
warning(`sys.exc_type` + ',' + `sys.exc_value`)
-
+
if success == 0:
error("Failed to extract metrics info from %s" % log_file)
-
+
return results
def extract_resolution(log_file, dpi):
return legacy_conversion_step2(latex_file, dpi, output_format, skipMetrics)
-# Creates a new LaTeX file from the original with pages specified in
+# Creates a new LaTeX file from the original with pages specified in
# failed_pages, pass it through pdflatex and updates the metrics
# from the standard legacy route
-def legacy_conversion_pdflatex(latex_file, failed_pages, legacy_metrics, gs,
+def legacy_conversion_pdflatex(latex_file, failed_pages, legacy_metrics, gs,
gs_device, gs_ext, alpha, resolution, output_format):
-
+
# Search for pdflatex executable
pdflatex = find_exe(["pdflatex"], path)
if pdflatex == None:
# Create a new LaTeX file from the original but only with failed pages
pdf_latex_file = latex_file_re.sub("_pdflatex.tex", latex_file)
filter_pages(latex_file, pdf_latex_file, failed_pages)
-
+
# pdflatex call
pdflatex_call = '%s "%s"' % (pdflatex, pdf_latex_file)
pdflatex_status, pdflatex_stdout = run_command(pdflatex_call)
-
+
pdf_file = latex_file_re.sub(".pdf", pdf_latex_file)
-
+
# GhostScript call to produce bitmaps
gs_call = '%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s ' \
'-sOutputFile="%s%%d.%s" ' \
# We've done it!
pdf_log_file = latex_file_re.sub(".log", pdf_latex_file)
pdf_metrics = legacy_extract_metrics_info(pdf_log_file)
-
+
original_bitmap = latex_file_re.sub("%d." + output_format, pdf_latex_file)
destination_bitmap = latex_file_re.sub("%d." + output_format, latex_file)
-
+
# Join the metrics with the those from dvips and rename the bitmap images
- join_metrics_and_rename(legacy_metrics, pdf_metrics, failed_pages,
+ join_metrics_and_rename(legacy_metrics, pdf_metrics, failed_pages,
original_bitmap, destination_bitmap)
# 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
'-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
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,
+ legacy_conversion_pdflatex(latex_file, failed_pages, legacy_metrics, gs,
gs_device, gs_ext, alpha, resolution, output_format)
# Crop the images
# 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
+# 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)
from legacy_lyxpreview2ppm import legacy_conversion, \
legacy_conversion_step2, legacy_extract_metrics_info, filter_pages
-
+
from lyxpreview_tools import copyfileobj, error, find_exe, \
find_exe_or_terminate, make_texcolor, mkstemp, run_command, warning, \
write_metrics_info, join_metrics_and_rename
path = string.split(os.environ["PATH"], os.pathsep)
def usage(prog_name):
- return "Usage: %s <format> <latex file> <dpi> <fg color> <bg color>\n"\
- "\twhere the colors are hexadecimal strings, eg 'faf0e6'"\
+ return "Usage: %s <format> <latex file> <dpi> <fg color> <bg color>\n" \
+ "\twhere the colors are hexadecimal strings, eg 'faf0e6'" \
% 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
if success == 0:
error("Failed to extract metrics info from dvipng")
-
+
return results
use_preview_pdf_re = re.compile("(\s*\\\\usepackage\[[^]]+)((pdftex|xetex)\]{preview})")
tmp = mkstemp()
-
+
fg = ""
if fg_color != "0.000000,0.000000,0.000000":
fg = ' \\AtBeginDocument{\\let\\oldpreview\\preview\\renewcommand\\preview{\\oldpreview\\color[rgb]{%s}}}\n' % (fg_color)
-
+
success = 0
try:
for line in open(latex_file, 'r').readlines():
# 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
# 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:)")
if psliteral_re.match(line) != None:
# Literal PostScript special detected!
page_has_ps = True
-
+
# Create the -pp parameter for dvipng
pages_parameter = ""
if len(ps_pages) > 0 and len(ps_pages) < page_index:
# 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]
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]), \
+ 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,
+ join_metrics_and_rename(dvipng_metrics, legacy_metrics, ps_pages,
original_bitmap, destination_bitmap)
# Convert images to ppm format if necessary.
# Actually create the .metrics file
write_metrics_info(dvipng_metrics, metrics_file)
-
+
return (0, dvipng_metrics)
if __name__ == "__main__":
import win32security
import winerror
except:
- sys.stderr.write("Consider installing the PyWin extension modules "\
+ sys.stderr.write("Consider installing the PyWin extension modules " \
"if you're irritated by windows appearing briefly.\n")
use_win32_modules = 0
destination_file.close()
source_file.close()
-
+
# Joins two metrics list, that is a list of tuple (page_index, metric)
# new_page_indexes contains the original page number of the pages in new_metrics
# e.g. new_page_indexes[3] == 14 means that the 4th item in new_metrics is the 15th in the original counting
# Goes through the array until the end is reached or the correct index is found
while legacy_index < len(original_metrics) and original_metrics[legacy_index][0] < index:
legacy_index += 1
-
-
+
# Add or update the metric for this page
if legacy_index < len(original_metrics) and original_metrics[legacy_index][0] == index:
original_metrics[legacy_index] = (index, metric)
projects / features.git / commitdiff