ci/html2pdf - IDS-Mannheim/posterdown - Gitiles

 #!/bin/sh -eu
 in=$1

 # Optional second argument: explicit output file. Made absolute here because we
 # may cd into the input's directory below. Further arguments are ignored.
 out_arg=""
 if [ $# -ge 2 ]; then
   out_arg=", output='$(realpath -m "$2")'"
 fi

 doc=$in
 backup_file=""
 poster_lang=en

 # For local files (not URLs): temporarily inject CSS that forces exact A0
 # dimensions and prevents Chrome's print shrinking, and work from the file's
 # directory so relative links (e.g. skeleton_files/) resolve.
 if [ -f "$in" ]; then
   abs_in=$(realpath "$in")
   work_dir=$(dirname "$abs_in")

   # Language the poster is written in, from <html lang="…"> (posterdown copies
   # it from the Rmd `lang:` field). Used for the hyphenation check below.
   poster_lang=$(sed -n 's/.*<html[^>]*[[:space:]]lang="\([A-Za-z-]*\)".*/\1/p' "$in" | head -n1)
   poster_lang=${poster_lang:-en}

   backup_file="${abs_in}.backup"
   cp "$abs_in" "$backup_file"
   # Restore the original file when we exit, also on failure.
   trap '[ -n "$backup_file" ] && mv "$backup_file" "$abs_in"' EXIT

   sed -i '/<\/head>/i\
 <style>\
 @page { size: 841mm 1189mm !important; margin: 0mm 0mm 20mm 0mm !important; }\
 html { width: 841mm !important; height: 1189mm !important; transform-origin: 0 0; }\
 body { width: 841mm !important; height: 1189mm !important; margin: 0 !important; padding: 0 !important; overflow: hidden !important; line-height: 1.2 !important; }\
 .poster { width: 841mm !important; height: 1189mm !important; }\
 * { line-height: 1.2 !important; }\
 p, div, span, li, ul, ol, td, th, a, strong, em, blockquote, caption, h1, h2, h3, h4, h5, h6 { line-height: 1.2 !important; }\
 </style>' "$abs_in"

   cd "$work_dir"
   doc=$(basename "$abs_in")
 fi

 # --- Automatic hyphenation ---------------------------------------------------
 # The template HTML carries `hyphens: auto` plus an <html lang="…"> attribute.
 # Whether Chrome actually hyphenates depends on where it finds its hyphenation
 # dictionaries:
 #
 #   * chrome-headless-shell (used in CI) BUNDLES the dictionaries in a
 #     `hyphen-data` folder next to the binary and loads them automatically, so
 #     hyphenation already works there without any help from us.
 #   * full google-chrome (typical locally) ships the dictionaries as a
 #     *component* living in the normal browser profile
 #     (~/.config/google-chrome/hyphen-data). pagedown::chrome_print() launches
 #     Chrome with a throwaway --user-data-dir that has no such component, so
 #     hyphenation silently does nothing.
 #
 # For the local case we seed a persistent profile with that component and point
 # Chrome at it: extra_args are appended after pagedown's own --user-data-dir and
 # Chrome honours the last value of a repeated switch. We symlink the whole
 # hyphen-data tree (all languages), so whatever `lang:` the poster declares is
 # respected -- nothing here is English-specific.
 lang_base=${poster_lang%%-*}

 chrome_profile="${CHROME_PROFILE_DIR:-$HOME/.cache/pagedown-chrome-profile}"
 user_data_dir_arg=""
 for hyphen_src in \
     "$HOME/.config/google-chrome/hyphen-data" \
     "$HOME/.config/google-chrome-beta/hyphen-data" \
     "$HOME/.config/chromium/hyphen-data"; do
   [ -d "$hyphen_src" ] || continue
   mkdir -p "$chrome_profile"
   ln -sfn "$hyphen_src" "$chrome_profile/hyphen-data"
   # Only override the profile when we have something to seed; otherwise leave
   # pagedown's default (throwaway) profile so CI's bundled dictionaries load.
   user_data_dir_arg=",'--user-data-dir=$chrome_profile'"
   break
 done

 # Warn at build time if no dictionary for the poster's language is reachable,
 # either from the seeded profile or bundled next to the Chrome binary pagedown
 # will launch. Better a clear warning than a silently un-hyphenated poster.
 chrome_bin=$(R --slave -e 'cat(pagedown::find_chrome())' 2>/dev/null || true)
 bundled_dir="/nonexistent"
 [ -n "$chrome_bin" ] && bundled_dir="$(dirname "$(readlink -f "$chrome_bin")")/hyphen-data"
 have_dict=false
 for dict in "$chrome_profile"/hyphen-data/*/hyph-"$lang_base"*.hyb \
             "$bundled_dir"/hyph-"$lang_base"*.hyb; do
   # Unmatched globs stay literal, so the file test simply fails for them.
   [ -e "$dict" ] && { have_dict=true; break; }
 done
 if $have_dict; then
   echo "html2pdf: hyphenation enabled for lang='$poster_lang'." >&2
 else
   echo "html2pdf: WARNING - no hyphenation dictionary for lang='$poster_lang'; the PDF will not be hyphenated." >&2
 fi

 R -e "pagedown::chrome_print('$doc'$out_arg,
   options=list(
     pageRanges='1',
     paperWidth=33.11,
     paperHeight=46.81,
     marginTop=0,
     marginBottom=0,
     marginLeft=0,
     marginRight=0,
     printBackground=TRUE,
     scale=0.98,  # Compensate for ~2% print scaling
     displayHeaderFooter=FALSE,
     preferCSSPageSize=TRUE
   ),
   extra_args = c(
     '--disable-gpu',
     '--no-sandbox',
     '--disable-dev-shm-usage',
     '--force-device-scale-factor=1',
     '--disable-print-preview',
     '--disable-background-timer-throttling',
     '--allow-file-access-from-files',
     '--force-color-profile=srgb',
     '--disable-lcd-text',
     '--disable-font-subpixel-positioning',
     '--run-all-compositor-stages-before-draw'$user_data_dir_arg
   )
 )"
	#!/bin/sh -eu
	in=$1

	# Optional second argument: explicit output file. Made absolute here because we
	# may cd into the input's directory below. Further arguments are ignored.
	out_arg=""
	if [ $# -ge 2 ]; then
	out_arg=", output='$(realpath -m "$2")'"
	fi

	doc=$in
	backup_file=""
	poster_lang=en

	# For local files (not URLs): temporarily inject CSS that forces exact A0
	# dimensions and prevents Chrome's print shrinking, and work from the file's
	# directory so relative links (e.g. skeleton_files/) resolve.
	if [ -f "$in" ]; then
	abs_in=$(realpath "$in")
	work_dir=$(dirname "$abs_in")

	# Language the poster is written in, from <html lang="…"> (posterdown copies
	# it from the Rmd `lang:` field). Used for the hyphenation check below.
	poster_lang=$(sed -n 's/.<html[^>][[:space:]]lang="\([A-Za-z-]\)"./\1/p' "$in" \| head -n1)
	poster_lang=${poster_lang:-en}

	backup_file="${abs_in}.backup"
	cp "$abs_in" "$backup_file"
	# Restore the original file when we exit, also on failure.
	trap '[ -n "$backup_file" ] && mv "$backup_file" "$abs_in"' EXIT

	sed -i '/<\/head>/i\
	<style>\
	@page { size: 841mm 1189mm !important; margin: 0mm 0mm 20mm 0mm !important; }\
	html { width: 841mm !important; height: 1189mm !important; transform-origin: 0 0; }\
	body { width: 841mm !important; height: 1189mm !important; margin: 0 !important; padding: 0 !important; overflow: hidden !important; line-height: 1.2 !important; }\
	.poster { width: 841mm !important; height: 1189mm !important; }\
	* { line-height: 1.2 !important; }\
	p, div, span, li, ul, ol, td, th, a, strong, em, blockquote, caption, h1, h2, h3, h4, h5, h6 { line-height: 1.2 !important; }\
	</style>' "$abs_in"

	cd "$work_dir"
	doc=$(basename "$abs_in")
	fi

	# --- Automatic hyphenation ---------------------------------------------------
	# The template HTML carries `hyphens: auto` plus an <html lang="…"> attribute.
	# Whether Chrome actually hyphenates depends on where it finds its hyphenation
	# dictionaries:
	#
	# * chrome-headless-shell (used in CI) BUNDLES the dictionaries in a
	# `hyphen-data` folder next to the binary and loads them automatically, so
	# hyphenation already works there without any help from us.
	# * full google-chrome (typical locally) ships the dictionaries as a
	# component living in the normal browser profile
	# (~/.config/google-chrome/hyphen-data). pagedown::chrome_print() launches
	# Chrome with a throwaway --user-data-dir that has no such component, so
	# hyphenation silently does nothing.
	#
	# For the local case we seed a persistent profile with that component and point
	# Chrome at it: extra_args are appended after pagedown's own --user-data-dir and
	# Chrome honours the last value of a repeated switch. We symlink the whole
	# hyphen-data tree (all languages), so whatever `lang:` the poster declares is
	# respected -- nothing here is English-specific.
	lang_base=${poster_lang%%-*}

	chrome_profile="${CHROME_PROFILE_DIR:-$HOME/.cache/pagedown-chrome-profile}"
	user_data_dir_arg=""
	for hyphen_src in \
	"$HOME/.config/google-chrome/hyphen-data" \
	"$HOME/.config/google-chrome-beta/hyphen-data" \
	"$HOME/.config/chromium/hyphen-data"; do
	[ -d "$hyphen_src" ] \|\| continue
	mkdir -p "$chrome_profile"
	ln -sfn "$hyphen_src" "$chrome_profile/hyphen-data"
	# Only override the profile when we have something to seed; otherwise leave
	# pagedown's default (throwaway) profile so CI's bundled dictionaries load.
	user_data_dir_arg=",'--user-data-dir=$chrome_profile'"
	break
	done

	# Warn at build time if no dictionary for the poster's language is reachable,
	# either from the seeded profile or bundled next to the Chrome binary pagedown
	# will launch. Better a clear warning than a silently un-hyphenated poster.
	chrome_bin=$(R --slave -e 'cat(pagedown::find_chrome())' 2>/dev/null \|\| true)
	bundled_dir="/nonexistent"
	[ -n "$chrome_bin" ] && bundled_dir="$(dirname "$(readlink -f "$chrome_bin")")/hyphen-data"
	have_dict=false
	for dict in "$chrome_profile"/hyphen-data//hyph-"$lang_base".hyb \
	"$bundled_dir"/hyph-"$lang_base"*.hyb; do
	# Unmatched globs stay literal, so the file test simply fails for them.
	[ -e "$dict" ] && { have_dict=true; break; }
	done
	if $have_dict; then
	echo "html2pdf: hyphenation enabled for lang='$poster_lang'." >&2
	else
	echo "html2pdf: WARNING - no hyphenation dictionary for lang='$poster_lang'; the PDF will not be hyphenated." >&2
	fi

	R -e "pagedown::chrome_print('$doc'$out_arg,
	options=list(
	pageRanges='1',
	paperWidth=33.11,
	paperHeight=46.81,
	marginTop=0,
	marginBottom=0,
	marginLeft=0,
	marginRight=0,
	printBackground=TRUE,
	scale=0.98, # Compensate for ~2% print scaling
	displayHeaderFooter=FALSE,
	preferCSSPageSize=TRUE
	),
	extra_args = c(
	'--disable-gpu',
	'--no-sandbox',
	'--disable-dev-shm-usage',
	'--force-device-scale-factor=1',
	'--disable-print-preview',
	'--disable-background-timer-throttling',
	'--allow-file-access-from-files',
	'--force-color-profile=srgb',
	'--disable-lcd-text',
	'--disable-font-subpixel-positioning',
	'--run-all-compositor-stages-before-draw'$user_data_dir_arg
	)
	)"