diff options
Diffstat (limited to 'tex/context/base/mkiv/cldf-prs.lua')
| -rw-r--r-- | tex/context/base/mkiv/cldf-prs.lua | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/cldf-prs.lua b/tex/context/base/mkiv/cldf-prs.lua new file mode 100644 index 000000000..3c3836a3e --- /dev/null +++ b/tex/context/base/mkiv/cldf-prs.lua @@ -0,0 +1,72 @@ +if not modules then modules = { } end modules ['cldf-bas'] = { + version = 1.001, + comment = "companion to cldf-ini.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- used in chem-ini.lua + +local lpegmatch, patterns = lpeg.match, lpeg.patterns +local P, R, V, Cc, Cs = lpeg.P, lpeg.R, lpeg.V, lpeg.Cc, lpeg.Cs +local format = string.format + +local cpatterns = patterns.context or { } +patterns.context = cpatterns + +local utf8character = patterns.utf8character +local cardinal = patterns.cardinal + +local leftbrace = P("{") +local rightbrace = P("}") +local backslash = P("\\") +local csname = backslash * P(1) * (1-backslash-leftbrace)^0 * P(" ")^0 +local sign = P("+") / "\\textplus " + + P("-") / "\\textminus " +local nested = P { leftbrace * (V(1) + (1-rightbrace))^0 * rightbrace } +local subscript = P("_") +local superscript = P("^") + +-- local scripts = P { "start", +-- start = V("csname") + V("lowfirst") + V("highfirst"), +-- csname = csname, +-- content = Cs(V("csname") + nested + sign^-1 * (cardinal + utf8character)), +-- lowfirst = subscript * ( Cc("\\lohi{%s}{%s}") * V("content") * superscript + Cc("\\low{%s}" ) ) * V("content") / format, +-- highfirst = superscript * ( Cc("\\hilo{%s}{%s}") * V("content") * subscript + Cc("\\high{%s}") ) * V("content") / format, +-- } + +-- local scripts = P { "start", +-- start = (V("csname") + V("lowfirst") + V("highfirst"))^1, +-- csname = csname, +-- content = Cs(V("csname") + nested + sign^-1 * (cardinal + utf8character)), +-- lowfirst = (subscript /"") * ( Cc("\\lohi{") * V("content") * Cc("}{") * (superscript/"") + Cc("\\low{" ) ) * V("content") * Cc("}"), +-- highfirst = (superscript/"") * ( Cc("\\hilo{") * V("content") * Cc("}{") * (subscript /"") + Cc("\\high{") ) * V("content") * Cc("}"), +-- } + +local scripted = Cs { "start", + start = (V("csname") + V("nested") + V("lowfirst") + V("highfirst") + V("character"))^1, + rest = V("csname") + V("nested") + V("lowfirst") + V("highfirst"), + csname = csname, + character = utf8character, + -- nested = leftbrace * (V("rest") + (V("character")-rightbrace))^0 * rightbrace, + nested = leftbrace * (V("start") -rightbrace)^0 * rightbrace, + -- content = Cs(V("nested") + sign^-1 * (cardinal + V("character"))), + content = V("nested") + sign^-1 * (cardinal + V("character")) + sign, + lowfirst = (subscript /"") * ( Cc("\\lohi{") * V("content") * Cc("}{") * (superscript/"") + Cc("\\low{" ) ) * V("content") * Cc("}"), + highfirst = (superscript/"") * ( Cc("\\hilo{") * V("content") * Cc("}{") * (subscript /"") + Cc("\\high{") ) * V("content") * Cc("}"), + } + +cpatterns.csname = csname +cpatterns.scripted = scripted +cpatterns.nested = nested + +-- print(lpegmatch(scripted,"10^-3_x")) +-- print(lpegmatch(scripted,"\\L {C_5}")) +-- print(lpegmatch(scripted,"\\SL{}")) +-- print(lpegmatch(scripted,"\\SL{C_5}")) +-- print(lpegmatch(scripted,"\\SL{C_5}")) +-- print(lpegmatch(scripted,"{C_5}")) +-- print(lpegmatch(scripted,"{\\C_5}")) +-- print(lpegmatch(scripted,"10^-a")) + |