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authorKhaled Hosny <khaledhosny@eglug.org>2010-05-10 17:23:06 +0300
committerKhaled Hosny <khaledhosny@eglug.org>2010-05-10 17:23:06 +0300
commit7002dfe5556f503320d9bee480e5fb43bdb6e7a3 (patch)
tree384ee73556657b6818c78b006cfa625776c980cd /luaextra-string.lua
parent20864d5fdb81f248500f2e94c95b3b15569cc277 (diff)
downloadlualibs-7002dfe5556f503320d9bee480e5fb43bdb6e7a3.tar.gz
Rename to lualibs
Rename luaextra->lualibs when sensible, also use luatexbase instead of luatextra.
Diffstat (limited to 'luaextra-string.lua')
-rw-r--r--luaextra-string.lua285
1 files changed, 0 insertions, 285 deletions
diff --git a/luaextra-string.lua b/luaextra-string.lua
deleted file mode 100644
index 25b8f8e..0000000
--- a/luaextra-string.lua
+++ /dev/null
@@ -1,285 +0,0 @@
-if not modules then modules = { } end modules ['l-string'] = {
- version = 1.001,
- comment = "companion to luat-lib.mkiv",
- author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
- copyright = "PRAGMA ADE / ConTeXt Development Team",
- license = "see context related readme files"
-}
-
-local sub, gsub, find, match, gmatch, format, char, byte, rep, lower = string.sub, string.gsub, string.find, string.match, string.gmatch, string.format, string.char, string.byte, string.rep, string.lower
-local lpegmatch = lpeg.match
-
--- some functions may disappear as they are not used anywhere
-
-if not string.split then
-
- -- this will be overloaded by a faster lpeg variant
-
- function string:split(pattern)
- if #self > 0 then
- local t = { }
- for s in gmatch(self..pattern,"(.-)"..pattern) do
- t[#t+1] = s
- end
- return t
- else
- return { }
- end
- end
-
-end
-
-local chr_to_esc = {
- ["%"] = "%%",
- ["."] = "%.",
- ["+"] = "%+", ["-"] = "%-", ["*"] = "%*",
- ["^"] = "%^", ["$"] = "%$",
- ["["] = "%[", ["]"] = "%]",
- ["("] = "%(", [")"] = "%)",
- ["{"] = "%{", ["}"] = "%}"
-}
-
-string.chr_to_esc = chr_to_esc
-
-function string:esc() -- variant 2
- return (gsub(self,"(.)",chr_to_esc))
-end
-
-function string:unquote()
- return (gsub(self,"^([\"\'])(.*)%1$","%2"))
-end
-
---~ function string:unquote()
---~ if find(self,"^[\'\"]") then
---~ return sub(self,2,-2)
---~ else
---~ return self
---~ end
---~ end
-
-function string:quote() -- we could use format("%q")
- return format("%q",self)
-end
-
-function string:count(pattern) -- variant 3
- local n = 0
- for _ in gmatch(self,pattern) do
- n = n + 1
- end
- return n
-end
-
-function string:limit(n,sentinel)
- if #self > n then
- sentinel = sentinel or " ..."
- return sub(self,1,(n-#sentinel)) .. sentinel
- else
- return self
- end
-end
-
---~ function string:strip() -- the .- is quite efficient
---~ -- return match(self,"^%s*(.-)%s*$") or ""
---~ -- return match(self,'^%s*(.*%S)') or '' -- posted on lua list
---~ return find(s,'^%s*$') and '' or match(s,'^%s*(.*%S)')
---~ end
-
-do -- roberto's variant:
- local space = lpeg.S(" \t\v\n")
- local nospace = 1 - space
- local stripper = space^0 * lpeg.C((space^0 * nospace^1)^0)
- function string.strip(str)
- return lpegmatch(stripper,str) or ""
- end
-end
-
-function string:is_empty()
- return not find(self,"%S")
-end
-
-function string:enhance(pattern,action)
- local ok, n = true, 0
- while ok do
- ok = false
- self = gsub(self,pattern, function(...)
- ok, n = true, n + 1
- return action(...)
- end)
- end
- return self, n
-end
-
-local chr_to_hex, hex_to_chr = { }, { }
-
-for i=0,255 do
- local c, h = char(i), format("%02X",i)
- chr_to_hex[c], hex_to_chr[h] = h, c
-end
-
-function string:to_hex()
- return (gsub(self or "","(.)",chr_to_hex))
-end
-
-function string:from_hex()
- return (gsub(self or "","(..)",hex_to_chr))
-end
-
-if not string.characters then
-
- local function nextchar(str, index)
- index = index + 1
- return (index <= #str) and index or nil, sub(str,index,index)
- end
- function string:characters()
- return nextchar, self, 0
- end
- local function nextbyte(str, index)
- index = index + 1
- return (index <= #str) and index or nil, byte(sub(str,index,index))
- end
- function string:bytes()
- return nextbyte, self, 0
- end
-
-end
-
--- we can use format for this (neg n)
-
-function string:rpadd(n,chr)
- local m = n-#self
- if m > 0 then
- return self .. rep(chr or " ",m)
- else
- return self
- end
-end
-
-function string:lpadd(n,chr)
- local m = n-#self
- if m > 0 then
- return rep(chr or " ",m) .. self
- else
- return self
- end
-end
-
-string.padd = string.rpadd
-
-function is_number(str) -- tonumber
- return find(str,"^[%-%+]?[%d]-%.?[%d+]$") == 1
-end
-
---~ print(is_number("1"))
---~ print(is_number("1.1"))
---~ print(is_number(".1"))
---~ print(is_number("-0.1"))
---~ print(is_number("+0.1"))
---~ print(is_number("-.1"))
---~ print(is_number("+.1"))
-
-function string:split_settings() -- no {} handling, see l-aux for lpeg variant
- if find(self,"=") then
- local t = { }
- for k,v in gmatch(self,"(%a+)=([^%,]*)") do
- t[k] = v
- end
- return t
- else
- return nil
- end
-end
-
-local patterns_escapes = {
- ["-"] = "%-",
- ["."] = "%.",
- ["+"] = "%+",
- ["*"] = "%*",
- ["%"] = "%%",
- ["("] = "%)",
- [")"] = "%)",
- ["["] = "%[",
- ["]"] = "%]",
-}
-
-function string:pattesc()
- return (gsub(self,".",patterns_escapes))
-end
-
-local simple_escapes = {
- ["-"] = "%-",
- ["."] = "%.",
- ["?"] = ".",
- ["*"] = ".*",
-}
-
-function string:simpleesc()
- return (gsub(self,".",simple_escapes))
-end
-
-function string:tohash()
- local t = { }
- for s in gmatch(self,"([^, ]+)") do -- lpeg
- t[s] = true
- end
- return t
-end
-
-local pattern = lpeg.Ct(lpeg.C(1)^0)
-
-function string:totable()
- return lpegmatch(pattern,self)
-end
-
---~ for _, str in ipairs {
---~ "1234567123456712345671234567",
---~ "a\tb\tc",
---~ "aa\tbb\tcc",
---~ "aaa\tbbb\tccc",
---~ "aaaa\tbbbb\tcccc",
---~ "aaaaa\tbbbbb\tccccc",
---~ "aaaaaa\tbbbbbb\tcccccc",
---~ } do print(string.tabtospace(str)) end
-
-function string.tabtospace(str,tab)
- -- we don't handle embedded newlines
- while true do
- local s = find(str,"\t")
- if s then
- if not tab then tab = 7 end -- only when found
- local d = tab-(s-1) % tab
- if d > 0 then
- str = gsub(str,"\t",rep(" ",d),1)
- else
- str = gsub(str,"\t","",1)
- end
- else
- break
- end
- end
- return str
-end
-
-function string:compactlong() -- strips newlines and leading spaces
- self = gsub(self,"[\n\r]+ *","")
- self = gsub(self,"^ *","")
- return self
-end
-
-function string:striplong() -- strips newlines and leading spaces
- self = gsub(self,"^%s*","")
- self = gsub(self,"[\n\r]+ *","\n")
- return self
-end
-
-function string:topattern(lowercase,strict)
- if lowercase then
- self = lower(self)
- end
- self = gsub(self,".",simple_escapes)
- if self == "" then
- self = ".*"
- elseif strict then
- self = "^" .. self .. "$"
- end
- return self
-end