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Diffstat (limited to 'Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-esc-string.def')
-rw-r--r-- | Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-esc-string.def | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-esc-string.def b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-esc-string.def new file mode 100644 index 00000000000..b7e5411f1ae --- /dev/null +++ b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3str-esc-string.def @@ -0,0 +1,169 @@ +%% +%% This is file `l3str-esc-string.def', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% l3str-convert.dtx (with options: `string') +%% +%% 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_lccode:nn {`\*} {`\\} + \char_set_catcode_other:N \^^J + \char_set_catcode_other:N \^^M + \tl_to_lowercase:n + { + \cs_new_protected_nopar:Npn \__str_convert_unescape_string: + { + \group_begin: + \flag_clear:n { str_byte } + \flag_clear:n { str_error } + \int_set:Nn \tex_escapechar:D { 92 } + \tl_gset:Nx \g__str_result_tl + { + \exp_after:wN \__str_unescape_string_newlines:wN + \g__str_result_tl \__prg_break: ^^M ? + \__prg_break_point: + } + \tl_gset:Nx \g__str_result_tl + { + \exp_after:wN \__str_unescape_string_loop:wNNN + \g__str_result_tl * ?? { ? \__prg_break: } + \__prg_break_point: + } + \__str_if_flag_error:nnx { str_byte } { non-byte } { string } + \__str_if_flag_error:nnx { str_error } { unescape-string } { } + \group_end: + } + \cs_new:Npn \__str_unescape_string_loop:wNNN #1 *#2#3#4 + } + { + \__str_filter_bytes:n {#1} + \use_none:n #4 + \__str_output_byte:w ' + \__str_octal_use:NTF #2 + { + \__str_octal_use:NTF #3 + { + \__str_octal_use:NTF #4 + { + \if_int_compare:w #2 > \c_three + - 256 + \fi: + \__str_unescape_string_repeat:NNNNNN + } + { \__str_unescape_string_repeat:NNNNNN ? } + } + { \__str_unescape_string_repeat:NNNNNN ?? } + } + { + \str_case_x:nnn {#2} + { + { \c_backslash_str } { 134 } + { ( } { 50 } + { ) } { 51 } + { r } { 15 } + { f } { 14 } + { n } { 12 } + { t } { 11 } + { b } { 10 } + { ^^J } { 0 - \c_one } + } + { + \flag_raise:n { str_error } + 0 - \c_one \use_i:nn + } + } + \__str_output_end: + \use_i:nn \__str_unescape_string_loop:wNNN #2#3#4 + } + \cs_new:Npn \__str_unescape_string_repeat:NNNNNN #1#2#3#4#5#6 + { \__str_output_end: \__str_unescape_string_loop:wNNN } + \cs_new:Npn \__str_unescape_string_newlines:wN #1 ^^M #2 + { + #1 + \if_charcode:w ^^J #2 \else: ^^J \fi: + \__str_unescape_string_newlines:wN #2 + } + \__msg_kernel_new:nnnn { str } { unescape-string } + { String~invalid~in~escaping~'string'. } + { + LaTeX~came~across~an~escape~character~'\c_backslash_str'~ + not~followed~by~any~of:~'n',~'r',~'t',~'b',~'f',~'(',~')',~ + '\c_backslash_str',~one~to~three~octal~digits,~or~the~end~ + of~a~line. + } +\group_end: +\str_const:Nx \c__str_escape_string_str + { \c_backslash_str ( ) } +\cs_new_protected_nopar:Npn \__str_convert_escape_string: + { \__str_convert_gmap:N \__str_escape_string_char:N } +\cs_new:Npn \__str_escape_string_char:N #1 + { + \__str_if_escape_string:NTF #1 + { + \__str_if_contains_char:NNT + \c__str_escape_string_str #1 + { \c_backslash_str } + #1 + } + { + \c_backslash_str + \int_div_truncate:nn {`#1} {64} + \int_mod:nn { \int_div_truncate:nn {`#1} \c_eight } \c_eight + \int_mod:nn {`#1} \c_eight + } + } +\prg_new_conditional:Npnn \__str_if_escape_string:N #1 { TF } + { + \if_int_compare:w `#1 < "21 \exp_stop_f: + \prg_return_false: + \else: + \if_int_compare:w `#1 > "7E \exp_stop_f: + \prg_return_false: + \else: + \prg_return_true: + \fi: + \fi: + } +%% +%% +%% End of file `l3str-esc-string.def'. |