diff options
Diffstat (limited to 'Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-enc-utf32.def')
-rw-r--r-- | Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-enc-utf32.def | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-enc-utf32.def b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-enc-utf32.def new file mode 100644 index 00000000000..a75b05875c6 --- /dev/null +++ b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-enc-utf32.def @@ -0,0 +1,179 @@ +%% +%% This is file `l3str-enc-utf32.def', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% l3str-convert.dtx (with options: `utf32') +%% +%% EXPERIMENTAL CODE +%% +%% Do not distribute this file without also distributing the +%% source files specified above. +%% +%% Do not distribute a modified version of this file. +%% +%% File: l3str-convert.dtx Copyright (C) 2013 The LaTeX3 Project +%% +%% It may be distributed and/or modified under the conditions of the +%% LaTeX Project Public License (LPPL), either version 1.3c of this +%% license or (at your option) any later version. The latest version +%% of this license is in the file +%% +%% http://www.latex-project.org/lppl.txt +%% +%% This file is part of the "l3experimental bundle" (The Work in LPPL) +%% and all files in that bundle must be distributed together. +%% +%% The released version of this bundle is available from CTAN. +%% +%% ----------------------------------------------------------------------- +%% +%% The development version of the bundle can be found at +%% +%% http://www.latex-project.org/svnroot/experimental/trunk/ +%% +%% for those people who are interested. +%% +%%%%%%%%%%% +%% NOTE: %% +%%%%%%%%%%% +%% +%% Snapshots taken from the repository represent work in progress and may +%% not work or may contain conflicting material! We therefore ask +%% people _not_ to put them into distributions, archives, etc. without +%% prior consultation with the LaTeX3 Project. +%% +%% ----------------------------------------------------------------------- +\group_begin: + \char_set_catcode_other:N \^^00 + \char_set_catcode_other:N \^^fe + \char_set_catcode_other:N \^^ff + \cs_new_protected_nopar:cpn { __str_convert_encode_utf32: } + { + \__str_convert_gmap_internal:N \__str_encode_utf_xxxii_be:n + \tl_gput_left:Nx \g__str_result_tl { ^^00 ^^00 ^^fe ^^ff } + } + \cs_new_protected_nopar:cpn { __str_convert_encode_utf32be: } + { \__str_convert_gmap_internal:N \__str_encode_utf_xxxii_be:n } + \cs_new_protected_nopar:cpn { __str_convert_encode_utf32le: } + { \__str_convert_gmap_internal:N \__str_encode_utf_xxxii_le:n } + \cs_new:Npn \__str_encode_utf_xxxii_be:n #1 + { + \exp_args:Nf \__str_encode_utf_xxxii_be_aux:nn + { \int_div_truncate:nn {#1} { "100 } } {#1} + } + \cs_new:Npn \__str_encode_utf_xxxii_be_aux:nn #1#2 + { + ^^00 + \__str_output_byte_pair_be:n {#1} + \__str_output_byte:n { #2 - #1 * "100 } + } + \cs_new:Npn \__str_encode_utf_xxxii_le:n #1 + { + \exp_args:Nf \__str_encode_utf_xxxii_le_aux:nn + { \int_div_truncate:nn {#1} { "100 } } {#1} + } + \cs_new:Npn \__str_encode_utf_xxxii_le_aux:nn #1#2 + { + \__str_output_byte:n { #2 - #1 * "100 } + \__str_output_byte_pair_le:n {#1} + ^^00 + } + \flag_clear_new:n { str_overflow } + \flag_clear_new:n { str_end } + \__msg_kernel_new:nnnn { str } { utf32-decode } + { + Invalid~UTF-32~string: \exp_last_unbraced:Nf \use_none:n + \__str_if_flag_times:nT { str_overflow } { ,~code~point~too~large } + \__str_if_flag_times:nT { str_end } { ,~truncated~string } + . + } + { + In~the~UTF-32~encoding,~every~Unicode~character~ + (in~the~range~[U+0000,~U+10FFFF])~is~encoded~as~4~bytes. + \flag_if_raised:nT { str_overflow } + { + \\\\ + LaTeX~came~across~a~code~point~larger~than~1114111,~ + the~maximum~code~point~defined~by~Unicode.~ + Perhaps~the~string~was~not~encoded~in~the~UTF-32~encoding? + } + \flag_if_raised:nT { str_end } + { + \\\\ + The~length~of~the~string~is~not~a~multiple~of~4.~ + Perhaps~the~string~was~truncated? + } + } + \cs_new_protected_nopar:cpn { __str_convert_decode_utf32be: } + { \__str_decode_utf_xxxii:Nw 1 \g__str_result_tl \s__stop } + \cs_new_protected_nopar:cpn { __str_convert_decode_utf32le: } + { \__str_decode_utf_xxxii:Nw 2 \g__str_result_tl \s__stop } + \cs_new_protected_nopar:cpn { __str_convert_decode_utf32: } + { + \exp_after:wN \__str_decode_utf_xxxii_bom:NNNN \g__str_result_tl + \s__stop \s__stop \s__stop \s__stop \s__stop + } + \cs_new_protected:Npn \__str_decode_utf_xxxii_bom:NNNN #1#2#3#4 + { + \str_if_eq_x:nnTF { #1#2#3#4 } { ^^ff ^^fe ^^00 ^^00 } + { \__str_decode_utf_xxxii:Nw 2 } + { + \str_if_eq_x:nnTF { #1#2#3#4 } { ^^00 ^^00 ^^fe ^^ff } + { \__str_decode_utf_xxxii:Nw 1 } + { \__str_decode_utf_xxxii:Nw 1 #1#2#3#4 } + } + } + \cs_new_protected:Npn \__str_decode_utf_xxxii:Nw #1#2 \s__stop + { + \flag_clear:n { str_overflow } + \flag_clear:n { str_end } + \flag_clear:n { str_error } + \cs_set:Npn \__str_tmp:w ##1 ##2 { ` ## #1 } + \tl_gset:Nx \g__str_result_tl + { + \exp_after:wN \__str_decode_utf_xxxii_loop:NNNN + #2 \s__stop \s__stop \s__stop \s__stop + \__prg_break_point: + } + \__str_if_flag_error:nnx { str_error } { utf32-decode } { } + } + \cs_new:Npn \__str_decode_utf_xxxii_loop:NNNN #1#2#3#4 + { + \if_meaning:w \s__stop #4 + \exp_after:wN \__str_decode_utf_xxxii_end:w + \fi: + #1#2#3#4 \s__tl + \if_int_compare:w \__str_tmp:w #1#4 > \c_zero + \flag_raise:n { str_overflow } + \flag_raise:n { str_error } + \int_use:N \c__str_replacement_char_int + \else: + \if_int_compare:w \__str_tmp:w #2#3 > \c_sixteen + \flag_raise:n { str_overflow } + \flag_raise:n { str_error } + \int_use:N \c__str_replacement_char_int + \else: + \int_eval:n + { \__str_tmp:w #2#3*"10000 + \__str_tmp:w #3#2*"100 + \__str_tmp:w #4#1 } + \fi: + \fi: + \s__tl + \__str_decode_utf_xxxii_loop:NNNN + } + \cs_new:Npn \__str_decode_utf_xxxii_end:w #1 \s__stop + { + \tl_if_empty:nF {#1} + { + \flag_raise:n { str_end } + \flag_raise:n { str_error } + #1 \s__tl + \int_use:N \c__str_replacement_char_int \s__tl + } + \__prg_break: + } +\group_end: +%% +%% +%% End of file `l3str-enc-utf32.def'. |