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+% --------------------------------------------------------------------------
+% the GHSYSTEM package
+%
+% globally harmonised system
+%
+% --------------------------------------------------------------------------
+% Clemens Niederberger
+% --------------------------------------------------------------------------
+% https://github.org/cgnieder/ghsystem/
+% contact@mychemistry.eu
+% --------------------------------------------------------------------------
+% If you have any ideas, questions, suggestions or bugs to report, please
+% feel free to contact me.
+% --------------------------------------------------------------------------
+% Copyright 2011-2014 Clemens Niederberger
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+% http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% The Current Maintainer of this work is Clemens Niederberger.
+% --------------------------------------------------------------------------
+\RequirePackage{ expl3, xparse, l3keys2e }
+\def\ghsystem@version{4.6}
+\def\ghsystem@date{2014/08/07}
+\ProvidesExplPackage
+ {ghsystem}
+ {\ghsystem@date}
+ {\ghsystem@version}
+ {globally harmonised system}
+
+% --------------------------------------------------------------------------
+% check expl3 version:
+\@ifpackagelater { expl3 } { 2012/11/21 }
+ { }
+ {
+ \PackageError { ghsystem } { Support~package~expl3~too~old }
+ {
+ You~need~to~update~your~installation~of~the~bundles~'l3kernel'~and~
+ 'l3packages'.\MessageBreak
+ Loading~ghsystem~will~abort!
+ }
+ \tex_endinput:D
+ }
+
+% --------------------------------------------------------------------------- %
+% error and warning messages:
+\msg_set:nnnn { ghsystem } { explicit }
+ { It~seems~you've~loaded~`ghsystem'~explicitly. }
+ {
+ It~seems~you've~loaded~`ghsystem'~explicitly.~This~should~work~but~the~
+ recommended~way~is~to~load~it~via~the~bundle,~i.e.~by~using~
+ \token_to_str:N \usepackage \{ chemmacros \}.
+ }
+
+\msg_set:nnnn { ghsystem } { statements }
+ {
+ You've~tried~to~call~statement~#1#2~ \msg_line_context: \c_space_tl but~it~
+ it~is~not~defined~in~ghsystem.sty .
+ }
+ {
+ You've~tried~to~call~statement~#1#2~ \msg_line_context: \c_space_tl but~it~
+ it~is~not~defined~in~ghsystem.sty . ~ Are~you~sure~it~exists? ~ If~so~please
+ ~send~a~message~to~the~author.~Thanks.
+ }
+
+\msg_set:nnnn { ghsystem } { booktabs }
+ { Package~`booktabs'~missing~\msg_line_context: . }
+ {
+ Option~#1~of~the~\token_to_str:N \ghslistall \c_space_tl command~
+ \msg_line_context: \c_space_tl needs~the~`booktabs'~package . ~Please~make~
+ sure~to~load~it~in~your~preamble.
+ }
+
+\cs_new_protected:Npn \ghsystem_msg:nnxx #1#2#3#4
+ {
+ \bool_if:NTF \l__ghsystem_strict_bool
+ { \msg_error:nnxx { #1 } { #2 } { #3 } { #4 } }
+ { \msg_warning:nnxx { #1 } { #2 } { #3 } { #4 } }
+ }
+
+% --------------------------------------------------------------------------
+% package options:
+\bool_new:N \l__ghsystem_strict_bool
+\keys_define:nn { chemmacros / ghsystem }
+ {
+ strict .bool_set:N = \l__ghsystem_strict_bool ,
+ strict .default:n = true ,
+ language .code:n = \ghsystem_load_language:n { #1 }
+ }
+
+\AtBeginDocument
+ {
+ \@ifpackageloaded{ chemmacros }
+ {
+ \bool_if:NT \l_chemmacros_strict_bool
+ { \bool_set_true:N \l__ghsystem_strict_bool }
+ }
+ {
+ \cs_new:Npn \iupac #1
+ {
+ \group_begin:
+ \cs_set_eq:NN \| \scan_stop:
+ #1
+ \group_end:
+ }
+ }
+ }
+
+% --------------------------------------------------------------------------- %
+% variants of kernel functions:
+\cs_generate_variant:Nn \file_if_exist:nTF { x }
+
+% --------------------------------------------------------------------------- %
+% scratch variables
+\tl_new:N \l__ghsystem_tmpa_tl
+\tl_new:N \l__ghsystem_tmpb_tl
+\int_new:N \l__ghsystem_tmpa_int
+\int_new:N \l__ghsystem_tmpb_int
+
+% load required packages:
+\RequirePackage{ translations , siunitx , graphicx , longtable , ifpdf }
+
+% --------------------------------------------------------------------------- %
+% define variables:
+\prop_new:N \l__ghsystem_h_prop
+\prop_new:N \l__ghsystem_euh_prop
+\prop_new:N \l__ghsystem_p_prop
+
+\cs_new:Npn \ghsystem_exposure: {}
+\cs_new:Npn \ghsystem_effect: {}
+\cs_new:Npn \ghsystem_organs: {}
+\cs_new:Npn \ghsystem_substance: {}
+\cs_new:Npn \ghsystem_text: {}
+\cs_new:Npn \ghsystem_dash:
+ {
+ \tex_penalty:D \c_ten_thousand
+ -
+ \skip_horizontal:N \c_zero_skip
+ }
+
+\cs_new:Npn \ghsystem_slash:
+ {
+ \tex_penalty:D \c_ten_thousand
+ /
+ \skip_horizontal:N \c_zero_skip
+ }
+
+\bool_new:N \l__ghsystem_fill_in_bool
+\bool_new:N \l__ghsystem_show_number_bool
+\bool_new:N \l__ghsystem_substance_bool
+\bool_new:N \l__ghsystem_organs_bool
+\bool_new:N \l__ghsystem_hide_statement_bool
+\bool_new:N \l__ghsystem_engine_pdftex_bool
+\bool_new:N \l__ghsystem_engine_xetex_bool
+\bool_new:N \l__ghsystem_engine_luatex_bool
+
+\tl_new:N \l__ghsystem_number_space_tl
+\tl_new:N \l__ghsystem_celsius_temperature_tl
+\tl_new:N \l__ghsystem_fahrenheit_temperature_tl
+\tl_new:N \l__ghsystem_kg_mass_tl
+\tl_new:N \l__ghsystem_lbs_mass_tl
+\tl_new:N \l__ghsystem_dots_tl
+\tl_set:Nn \l__ghsystem_dots_tl { \ldots }
+\tl_new:N \l__ghsystem_picture_scale_default_tl
+\tl_set:Nn \l__ghsystem_picture_scale_default_tl { .05 }
+\tl_new:N \l__ghsystem_picture_scale_tl
+\tl_set_eq:NN \l__ghsystem_picture_scale_tl \l__ghsystem_picture_scale_default_tl
+\tl_new:N \l__ghsystem_picture_includegraphics_tl
+\tl_new:N \l__ghsystem_picture_type_tl
+\tl_new:N \l__ghsystem_identifier_tl
+\tl_new:N \l__ghsystem_table_text_tl
+\tl_new:N \l__ghsystem_table_next_page_tl
+\tl_new:N \l__ghsystem_table_head_rule_tl
+\tl_set:Nn \l__ghsystem_table_head_rule_tl { \hline }
+\tl_new:N \l__ghsystem_table_top_head_rule_tl
+\tl_set:Nn \l__ghsystem_table_top_head_rule_tl { \hline }
+\tl_new:N \l__ghsystem_table_foot_rule_tl
+\tl_set:Nn \l__ghsystem_table_foot_rule_tl { \hline }
+\tl_new:N \l__ghsystem_table_last_foot_rule_tl
+\tl_set:Nn \l__ghsystem_table_last_foot_rule_tl { \hline }
+\tl_new:N \l__ghsystem_table_caption_tl
+\tl_new:N \l__ghsystem_table_caption_short_tl
+\tl_new:N \l__ghsystem_table_label_tl
+\tl_set:Nn \l__ghsystem_table_label_tl { tab : ghs-hp-statements }
+\tl_new:N \l__ghsystem_list_all_column_format_tl
+
+\dim_new:N \l__ghsystem_list_all_column_width_dim
+\dim_set:Nn \l__ghsystem_list_all_column_width_dim { .7\linewidth }
+\dim_new:N \l__ghsystem_table_line_sep_dim
+\dim_set:Nn \l__ghsystem_table_line_sep_dim { 3pt }
+
+\fp_new:N \l__ghsystem_picture_scale_fp
+\fp_set:Nn \l__ghsystem_picture_scale_fp { \l__ghsystem_picture_scale_tl }
+
+\DeclareSIUnit { \GHSfahrenheit } { \SIUnitSymbolDegree F }
+\DeclareSIUnit { \GHScelsius } { \SIUnitSymbolDegree C }
+\DeclareSIUnit { \GHSkilogram } { kg }
+\DeclareSIUnit { \GHSpounds } { lbs }
+
+% language settings
+\bool_new:N \l__ghsystem_language_file_loaded_bool
+\bool_new:N \l__ghsystem_language_directory_bool
+
+% load the language file -- it needs expl3 namespace but shouldn't care about
+% what catcode regime was before and simply restore it...
+% so we basically copy the definitions of \ExplSyntaxOn and \ExplSyntaxOff
+
+\cs_new_protected:Npn \__ghsystem_namespace_restore: {}
+\bool_new:N \l__ghsystem_expl_namespace_bool
+
+\cs_new_protected:Npn \__ghsystem_expl_namespace:
+ {
+ \bool_if:NF \l__ghsystem_expl_namespace_bool
+ {
+ \cs_set_protected:Npx \__ghsystem_namespace_restore:
+ {
+ \char_set_catcode:nn { 9 } { \char_value_catcode:n { 9 } }
+ \char_set_catcode:nn { 32 } { \char_value_catcode:n { 32 } }
+ \char_set_catcode:nn { 34 } { \char_value_catcode:n { 34 } }
+ \char_set_catcode:nn { 38 } { \char_value_catcode:n { 38 } }
+ \char_set_catcode:nn { 58 } { \char_value_catcode:n { 58 } }
+ \char_set_catcode:nn { 94 } { \char_value_catcode:n { 94 } }
+ \char_set_catcode:nn { 95 } { \char_value_catcode:n { 95 } }
+ \char_set_catcode:nn { 124 } { \char_value_catcode:n { 124 } }
+ \char_set_catcode:nn { 126 } { \char_value_catcode:n { 126 } }
+ \tex_endlinechar:D = \tex_the:D \tex_endlinechar:D \scan_stop:
+ \bool_set_false:N \l__ghsystem_expl_namespace_bool
+ \cs_set_protected:Npn \__ghsystem_namespace_restore: {}
+ }
+ }
+ \char_set_catcode_ignore:n { 9 }
+ \char_set_catcode_ignore:n { 32 }
+ \char_set_catcode_other:n { 34 }
+ \char_set_catcode_math_toggle:n { 36 }
+ \char_set_catcode_alignment:n { 38 }
+ \char_set_catcode_letter:n { 58 }
+ \char_set_catcode_math_superscript:n { 94 }
+ \char_set_catcode_letter:n { 95 }
+ \char_set_catcode_other:n { 124 }
+ \char_set_catcode_space:n { 126 }
+ \tex_endlinechar:D = 32 \scan_stop:
+ \bool_set_true:N \l__ghsystem_expl_namespace_bool
+ }
+
+\cs_new:Npn \ghsystem_load_language_file:n #1
+ {
+ \__ghsystem_expl_namespace:
+ \file_input:n { ghsystem_#1.def }
+ \__ghsystem_namespace_restore:
+ }
+
+\cs_new_protected:Npn \ghsystem_load_language:n #1
+ {
+ \file_if_exist:xTF { ghsystem_ #1 .def }
+ {
+ \bool_set_true:N \l__ghsystem_language_file_loaded_bool
+ \ghsystem_load_language_file:n { #1 }
+ }
+ { \ghsystem_load_language_file:n { english } }
+ }
+\cs_generate_variant:Nn \ghsystem_load_language:n { V }
+
+\NewDocumentCommand \loadghsystemlanguage { m }
+ { \ghsystem_load_language:n { #1 } }
+
+\AtBeginDocument{
+ \bool_if:NF \l__ghsystem_language_file_loaded_bool
+ {
+ \cs_if_exist:NTF \l_chemmacros_language_tl
+ { \ghsystem_load_language:V \l_chemmacros_language_tl }
+ {
+ \ghsystem_load_language:n
+ { \@trnslt@language{\@trnslt@current@language} }
+ }
+ }
+}
+
+\cs_new_nopar:Nn \ghsystem_booktabs:n
+ {
+ \cs_if_exist:cF { ver@booktabs.sty }
+ { \msg_error:nnx { ghsystem } { booktabs } { #1 } }
+ }
+
+% --------------------------------------------------------------------------- %
+% define options:
+\keys_define:nn { chemmacros / ghsystem }
+ {
+ % \ghs options:
+ hide .bool_set:N =
+ \l__ghsystem_hide_statement_bool ,
+ hide .default:n = true ,
+ fill-in .bool_set:N = \l__ghsystem_fill_in_bool ,
+ fill-in .default:n = true ,
+ exposure .code:n =
+ \cs_set:Npn \ghsystem_exposure: { ~ #1 } ,
+ effect .code:n =
+ \cs_set:Npn \ghsystem_effect: { ~ #1 } ,
+ organs .code:n =
+ \bool_set_true:N \l__ghsystem_organs_bool
+ \cs_set:Npn \ghsystem_organs: { ~ #1 } ,
+ substance .code:n =
+ \bool_set_true:N \l__ghsystem_substance_bool
+ \cs_set:Npn \ghsystem_substance: { ~ #1 } ,
+ text .code:n =
+ \cs_set:Npn \ghsystem_text: { ~ #1 } ,
+ space .tl_set:N =
+ \l__ghsystem_number_space_tl ,
+ C-temperature .tl_set:N =
+ \l__ghsystem_celsius_temperature_tl ,
+ F-temperature .tl_set:N =
+ \l__ghsystem_fahrenheit_temperature_tl ,
+ kg-mass .tl_set:N = \l__ghsystem_kg_mass_tl ,
+ lbs-mass .tl_set:N = \l__ghsystem_lbs_mass_tl ,
+ dots .tl_set:N = \l__ghsystem_dots_tl ,
+ % \ghspic options:
+ scale .code:n =
+ \fp_set:Nn \l__ghsystem_picture_scale_fp { #1 * \l__ghsystem_picture_scale_fp } ,
+ includegraphics .code:n =
+ \tl_set:Nn \l__ghsystem_picture_includegraphics_tl { , #1 } ,
+ pic-type .choices:nn = { eps , jpg , png , pdf }
+ { \tl_set_eq:NN \l__ghsystem_picture_type_tl \l_keys_choice_tl } ,
+ % \ghslistall options:
+ table-head-number .tl_set:N = \l__ghsystem_identifier_tl ,
+ table-head-text .tl_set:N = \l__ghsystem_table_text_tl ,
+ table-next-page .tl_set:N =
+ \l__ghsystem_table_next_page_tl ,
+ table-row-sep .dim_set:N =
+ \l__ghsystem_table_line_sep_dim ,
+ table-head-rule .choice: ,
+ table-head-rule / default .code:n =
+ \tl_set:Nn \l__ghsystem_table_head_rule_tl { \hline } ,
+ table-head-rule / booktabs .code:n =
+ \ghsystem_booktabs:n { table-head-rule }
+ \tl_set:Nn \l__ghsystem_table_head_rule_tl { \midrule } ,
+ table-head-rule / none .code:n =
+ \tl_clear:N \l__ghsystem_table_head_rule_tl ,
+ table-top-head-rule .choice: ,
+ table-top-head-rule / default .code:n =
+ \tl_set:Nn \l__ghsystem_table_top_head_rule_tl { \hline } ,
+ table-top-head-rule / booktabs .code:n =
+ \ghsystem_booktabs:n { table-top-head-rule }
+ \tl_set:Nn \l__ghsystem_table_top_head_rule_tl { \toprule } ,
+ table-top-head-rule / none .code:n =
+ \tl_clear:N \l__ghsystem_table_top_head_rule_tl ,
+ table-foot-rule .choice: ,
+ table-foot-rule / default .code:n =
+ \tl_set:Nn \l__ghsystem_table_foot_rule_tl { \hline } ,
+ table-foot-rule / booktabs .code:n =
+ \ghsystem_booktabs:n { table-foot-rule }
+ \tl_set:Nn \l__ghsystem_table_foot_rule_tl { \midrule } ,
+ table-foot-rule / none .code:n =
+ \tl_clear:N \l__ghsystem_table_foot_rule_tl ,
+ table-last-foot-rule .choice: ,
+ table-last-foot-rule / default .code:n =
+ \tl_set:Nn \l__ghsystem_table_last_foot_rule_tl { \hline } ,
+ table-last-foot-rule / booktabs .code:n =
+ \ghsystem_booktabs:n { table-last-foot-rule }
+ \tl_set:Nn \l__ghsystem_table_last_foot_rule_tl { \bottomrule } ,
+ table-last-foot-rule / none .code:n =
+ \tl_clear:N \l__ghsystem_table_last_foot_rule_tl ,
+ table-rules .choice: ,
+ table-rules / default .code:n =
+ \tl_set:Nn \l__ghsystem_table_head_rule_tl { \hline }
+ \tl_set:Nn \l__ghsystem_table_top_head_rule_tl { \hline }
+ \tl_set:Nn \l__ghsystem_table_foot_rule_tl { \hline }
+ \tl_set:Nn \l__ghsystem_table_last_foot_rule_tl { \hline } ,
+ table-rules / booktabs .code:n =
+ \ghsystem_booktabs:n { table-rules }
+ \tl_set:Nn \l__ghsystem_table_head_rule_tl { \midrule }
+ \tl_set:Nn \l__ghsystem_table_top_head_rule_tl { \toprule }
+ \tl_set:Nn \l__ghsystem_table_foot_rule_tl { \midrule }
+ \tl_set:Nn \l__ghsystem_table_last_foot_rule_tl { \bottomrule } ,
+ table-rules / none .code:n =
+ \tl_clear:N \l__ghsystem_table_head_rule_tl
+ \tl_clear:N \l__ghsystem_table_top_head_rule_tl
+ \tl_clear:N \l__ghsystem_table_foot_rule_tl
+ \tl_clear:N \l__ghsystem_table_last_foot_rule_tl ,
+ table-caption .tl_set:N =
+ \l__ghsystem_table_caption_tl ,
+ table-caption-short .tl_set:N =
+ \l__ghsystem_table_caption_short_tl ,
+ table-label .tl_set:N =
+ \l__ghsystem_table_label_tl ,
+ table-column-format .tl_set:N =
+ \l__ghsystem_list_all_column_format_tl ,
+ table-column-width .dim_set:N =
+ \l__ghsystem_list_all_column_width_dim
+ }
+
+% --------------------------------------------------------------------------- %
+% the main command for getting the H/EUH/P statements
+% \ghs{<type>}{<num>}
+% \ghs*{<type>}{<num>} : type without number
+%
+\NewDocumentCommand \ghs { somm }
+ {
+ \group_begin:
+ \IfBooleanF { #1 } { \bool_set_true:N \l__ghsystem_show_number_bool }
+ \IfNoValueF { #2 } { \keys_set:nn { chemmacros / ghsystem } { #2 } }
+ \ghsystem_read_args:nn { #3 } { #4 }
+ \group_end:
+ }
+
+\cs_new:Nn \ghsystem_read_args:nn
+ {
+ \__ghsystem_get_type:nN { #1 } \l__ghsystem_tmpa_tl
+ \prop_get:cnNTF { l__ghsystem_ \l__ghsystem_tmpa_tl _prop } { #2 } \l__ghsystem_tmpb_tl
+ {
+ \__ghsystem_is_combination:nn { #1 } { #2 }
+ \bool_if:NF \l__ghsystem_hide_statement_bool
+ { \tl_use:N \l__ghsystem_tmpb_tl }
+ }
+ { \ghsystem_msg:nnxx { ghsystem } { statements } { #1 } { #2 } }
+ }
+
+\cs_new_protected:Nn \__ghsystem_get_type:nN
+ {
+ \tl_if_eq:nnT { #1 } { h } { \tl_set:Nn #2 { h } }
+ \tl_if_eq:nnT { #1 } { H } { \tl_set:Nn #2 { h } }
+ \tl_if_eq:nnT { #1 } { euh } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { Euh } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { euH } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { eUh } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { EUh } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { EuH } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { eUH } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { EUH } { \tl_set:Nn #2 { euh } }
+ \tl_if_eq:nnT { #1 } { p } { \tl_set:Nn #2 { p } }
+ \tl_if_eq:nnT { #1 } { P } { \tl_set:Nn #2 { p } }
+ }
+
+\cs_new:Nn \__ghsystem_is_combination:nn
+ {
+ \tl_if_in:nnTF { #2 } { + }
+ { \__ghsystem_is_combination_aux_i:w #1,#2 \q_stop }
+ { \__ghsystem_is_combination_aux_ii:w #1,#2 \q_stop }
+ }
+
+\cs_new:Npn \__ghsystem_is_combination_aux_i:w #1,#2+#3 \q_stop
+ {
+ \bool_if:NT \l__ghsystem_show_number_bool
+ {
+ \tl_to_uppercase:n { #1 }
+ \tl_use:N \l__ghsystem_number_space_tl
+ #2 ~ + ~
+ \tl_if_in:nnTF { #3 } { + }
+ { \__ghsystem_is_combination_aux_iii:w #1,#3 \q_stop }
+ {
+ \tl_to_uppercase:n { #1 }
+ \tl_use:N \l__ghsystem_number_space_tl
+ #3 \bool_if:NF \l__ghsystem_hide_statement_bool { : ~ }
+ }
+ }
+ }
+
+\cs_new:Npn \__ghsystem_is_combination_aux_ii:w #1,#2 \q_stop
+ {
+ \bool_if:NT \l__ghsystem_show_number_bool
+ {
+ \tl_to_uppercase:n { #1 }
+ \tl_use:N \l__ghsystem_number_space_tl
+ #2 \bool_if:NF \l__ghsystem_hide_statement_bool { : ~ }
+ }
+ }
+
+\cs_new:Npn \__ghsystem_is_combination_aux_iii:w #1,#2+#3 \q_stop
+ {
+ \bool_if:NT \l__ghsystem_show_number_bool
+ {
+ \tl_to_uppercase:n { #1 }
+ \tl_use:N \l__ghsystem_number_space_tl
+ #2 ~ + ~
+ \tl_to_uppercase:n { #1 }
+ \tl_use:N \l__ghsystem_number_space_tl
+ #3 \bool_if:NF \l__ghsystem_hide_statement_bool { : ~ }
+ }
+ }
+
+% --------------------------------------------------------------------------- %
+% list all statements in a table
+%
+\NewDocumentCommand \ghslistall { o }
+ {
+ \group_begin:
+ \IfNoValueF { #1 } { \keys_set:nn { chemmacros / ghsystem } { #1 } }
+ \ghsystem_list_all:
+ \group_end:
+ }
+
+\cs_new_protected:Npn \ghsystem_list_all:
+ {
+ \int_zero:N \l__ghsystem_tmpa_int
+ \int_zero:N \l__ghsystem_tmpb_int
+ \prop_map_inline:Nn \l__ghsystem_p_prop { \int_incr:N \l__ghsystem_tmpa_int }
+ \dim_set_eq:NN \extrarowheight \l__ghsystem_table_line_sep_dim
+ \begin { longtable }
+ {
+ l
+ >{ \l__ghsystem_list_all_column_format_tl }
+ p{ \l__ghsystem_list_all_column_width_dim }
+ }
+ \caption [ \l__ghsystem_table_caption_short_tl ]
+ {
+ \l__ghsystem_table_caption_tl
+ \exp_args:No \label { \l__ghsystem_table_label_tl }
+ } \\
+ \l__ghsystem_table_top_head_rule_tl
+ \textbf { \l__ghsystem_identifier_tl } &
+ \textbf { \l__ghsystem_table_text_tl } \\
+ \l__ghsystem_table_head_rule_tl
+ \endfirsthead
+ \l__ghsystem_table_top_head_rule_tl
+ \textbf { \l__ghsystem_identifier_tl } &
+ \textbf { \l__ghsystem_table_text_tl } \\
+ \l__ghsystem_table_head_rule_tl
+ \endhead
+ \l__ghsystem_table_last_foot_rule_tl
+ \multicolumn{2}{r} { \textit { \l__ghsystem_table_next_page_tl } }
+ \endfoot
+ \l__ghsystem_table_foot_rule_tl \multicolumn{2}{r} { }
+ \endlastfoot
+ \prop_map_inline:Nn \l__ghsystem_h_prop
+ { \__ghsystem_read_number:nn { H } { ##1 } & ##2 \\ }
+ \prop_map_inline:Nn \l__ghsystem_euh_prop
+ { \__ghsystem_read_number:nn { EUH } { ##1 } & ##2 \\ }
+ \int_zero:N \l__ghsystem_tmpa_int
+ \prop_map_inline:Nn \l__ghsystem_p_prop { \int_gincr:N \l__ghsystem_tmpa_int }
+ \int_zero:N \l__ghsystem_tmpb_int
+ \prop_map_inline:Nn \l__ghsystem_p_prop
+ {
+ \int_gincr:N \l__ghsystem_tmpb_int
+ \__ghsystem_read_number:nn { P } { ##1 } & ##2
+ \int_compare:nNnT { \l__ghsystem_tmpb_int } < { \l__ghsystem_tmpa_int } { \\ }
+ }
+ \end { longtable }
+ }
+
+\cs_new:Nn \__ghsystem_read_number:nn
+ {
+ \tl_if_in:nnTF { #2 } { + }
+ { \__ghsystem_read_number_aux_i:w #1 , #2 \q_stop }
+ { #1 \tl_use:N \l__ghsystem_number_space_tl #2 }
+ }
+
+\cs_new:Npn \__ghsystem_read_number_aux_i:w #1,#2+#3\q_stop
+ {
+ #1 \tl_use:N \l__ghsystem_number_space_tl #2 ~+~
+ \tl_if_in:nnTF { #3 } { + }
+ { \__ghsystem_read_number_aux_ii:w #1,#3 \q_stop }
+ { #1#3 }
+ }
+
+\cs_new:Npn \__ghsystem_read_number_aux_ii:w #1,#2+#3\q_stop
+ { #1#2 ~+~ #1#3 }
+
+% --------------------------------------------------------------------------- %
+% the picture command
+% \ghspic[<options>]{<name>}
+%
+% test for compilation engine/mode:
+\pdftex_if_engine:T { \bool_set_true:N \l__ghsystem_engine_pdftex_bool }
+\xetex_if_engine:T { \bool_set_true:N \l__ghsystem_engine_xetex_bool }
+\luatex_if_engine:T { \bool_set_true:N \l__ghsystem_engine_luatex_bool }
+
+\bool_new:N \l__ghsystem_picture_directory_bool
+
+\bool_if:NT \l__ghsystem_engine_pdftex_bool
+ {
+ \ifpdf
+ \tl_set:Nn \l__ghsystem_picture_type_tl { pdf }
+ \else
+ \tl_set:Nn \l__ghsystem_picture_type_tl { eps }
+ \fi
+ }
+\bool_if:NT \l__ghsystem_engine_xetex_bool
+ { \tl_set:Nn \l__ghsystem_picture_type_tl { pdf } }
+\bool_if:NT \l__ghsystem_engine_luatex_bool
+ { \tl_set:Nn \l__ghsystem_picture_type_tl { pdf } }
+
+% the command:
+\NewDocumentCommand \ghspic { om }
+ {
+ \group_begin:
+ \IfNoValueF { #1 } { \keys_set:nn { chemmacros / ghsystem } { #1 } }
+ \ghsystem_pic:n { #2 }
+ \group_end:
+ }
+
+\cs_new_protected:Npn \ghsystem_pic:n #1
+ {
+ \__ghsystem_includegraphics:xn
+ {
+ scale = \fp_to_tl:N \l__ghsystem_picture_scale_fp
+ \exp_not:V \l__ghsystem_picture_includegraphics_tl
+ }
+ { ghsystem_ #1 . \l__ghsystem_picture_type_tl }
+ }
+
+\cs_new:Nn \__ghsystem_includegraphics:nn
+ { \includegraphics[#1]{#2} }
+\cs_generate_variant:Nn \__ghsystem_includegraphics:nn { xn }
+
+% --------------------------------------------------------------------------
+% options and setup
+\ProcessKeysOptions{ chemmacros / ghsystem }
+
+\cs_new_protected:Npn \ghsystem_setup:n #1
+ { \keys_set:nn { chemmacros / ghsystem } { #1 } }
+
+\NewDocumentCommand \ghssetup { m }
+ { \ghsystem_setup:n { #1 } }
+
+\tex_endinput:D
+
+% --------------------------------------------------------------------------
+VERSION HISTORY
+2012/01/30 - version 3.0a - renamed ghs => ghsystem to make the names unique
+ (following a request by Karl Berry for TeXlive)
+2012/02/05 - version 3.0c - renamed pictogram files (following a request by
+ Karl Berry for TeXlive)
+2012/05/13 - version 3.3a - Italian translations of the H, EUH and P statements
+2012/05/18 - version 3.3b - compatibility with MiKTeX
+2012/05/18 - version 3.3c - fix in the `ghsystem/language' option
+2012/07/24 - version 3.3d - additional picture file type `pdf'
+2013/02/19 - version 3.5a - bug fix: `ghsystem' recognizes language again
+2013/07/06 - version 4.0 - dropped requirement of `tabu' package.
+ - new options `table-column-width' and
+ `table-column-format'
+ - adapted to changed language setting mechanism in
+ `chemmacros'
+ - new command: \loadghsystemlanguage
+ - the package can be used independently from
+ `chemmacros'
+2013/12/13 - version 4.0a - small changes to `ghsystem_german.def'
+ - added \ghsystem_dash: and \ghsystem_slash:
+2014/01/09 - version 4.2e - bug fix: namespace after language file loading
+ properly restored
+2014/04/08 - version 4.5 - small changes in `ghsystem_italian.def'
+2014/04/13 - version 4.5a - added Spanish translations, thanks to Ignacio
+ Fernández Galván
+2014/06/30 - version 4.5b - adapt to deprecated expl3 function
+2014/08/07 - version 4.6 - split from `chemmacros' bundle as independent
+ package
+
+% --------------------------------------------------------------------------
+% TODO:
+- add option to switch between `longtable` and `supertabular` for \ghslistall ?