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fix: spaces around '=' sign in html tag attributes

Guilian 2025-04-29 20:14:49 +02:00
parent 5e8c023559
commit 83b1ac0c83
1 changed files with 128 additions and 237 deletions
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343
html.lua
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@ -293,44 +293,15 @@ function M.tokenise( content )
local in_tag = nil local in_tag = nil
local currently_opened_quotes = nil local currently_opened_quotes = nil
local text_memory = "" local text_memory = ""
local attr_name = nil -- Track attribute name when we encounter whitespace before equals
local i = 1 local i = 1
while i <= #content do while i <= #content do
local char = content:sub(i,i) local char = content:sub(i, i)
--
-- Taking care of quotes
--
if in_tag then
-- finding matching quotes
if currently_opened_quotes ~= nil and char == currently_opened_quotes then
currently_opened_quotes = nil
text_memory = text_memory .. char
goto continue
end
-- Opening a new set of quotes
if currently_opened_quotes == nil and (char == "'" or char == '"') then
currently_opened_quotes = char
text_memory = text_memory .. char
goto continue
end
-- reaching here means:
-- - we're in a tag, inside quotes
-- - the character is not the closing quote mark
-- So just add it and get on with it.
if currently_opened_quotes ~= nil then
text_memory = text_memory .. char
goto continue
end
end
-- Handle comments and doctype declarations
if char == "<" then if char == "<" then
-- Handle comments
if content:sub(i, i+3) == "<!--" then if content:sub(i, i+3) == "<!--" then
local end_i = content:find("-->", i+3, true) local end_i = content:find("-->", i+3, true)
if end_i then if end_i then
@ -338,66 +309,64 @@ function M.tokenise( content )
else else
i = #content i = #content
end end
goto continue goto continue
end end
-- Handle doctype declarations
if content:sub(i, i+1) == "<!" then if content:sub(i, i+1) == "<!" then
i = content:find(">", i, true) i = content:find(">", i, true)
goto continue goto continue
end end
--------------------------------- -- Save any accumulated text before starting a new tag
if #text_memory ~= 0 then if #text_memory ~= 0 then
table.insert( TOKENS, {type="TEXT", value=text_memory} ) table.insert(TOKENS, {type="TEXT", value=text_memory})
text_memory = "" text_memory = ""
end end
-- closing tag -- Reset attribute tracking
attr_name = nil
-- Handle closing tags
if content:sub(i, i+1) == "</" then if content:sub(i, i+1) == "</" then
table.insert( TOKENS, {type="START_CLOSING_TAG"} ) table.insert(TOKENS, {type="START_CLOSING_TAG"})
in_tag = "closing" in_tag = "closing"
i = i+1 i = i+1
goto continue goto continue
end end
table.insert( TOKENS, {type="START_OPENING_TAG"} ) -- Handle opening tags
table.insert(TOKENS, {type="START_OPENING_TAG"})
in_tag = "opening" in_tag = "opening"
goto continue goto continue
end end
-- Handle end of tag
if char == ">" and in_tag then if char == ">" and in_tag and currently_opened_quotes == nil then
-- first, cleanup the text_memory, as the closing > is often side-by-side with the last "word" -- Process any remaining text in the tag
if #text_memory ~= 0 then if #text_memory ~= 0 then
local word = trim(text_memory) local word = trim(text_memory)
if not word:match("^%s*$") then if not word:match("^%s*$") then
table.insert( TOKENS, {type="WORD", value=word}) table.insert(TOKENS, {type="WORD", value=word})
end end
text_memory = "" text_memory = ""
end end
table.insert( TOKENS, {type = "END_TAG"} ) -- Reset attribute tracking
attr_name = nil
-- closing tags don't require any more work. table.insert(TOKENS, {type="END_TAG"})
if in_tag == "closing" then
in_tag = nil
goto continue
end
in_tag = nil
-- Handle special tags with raw content
if in_tag == "opening" then
local curr_token = #TOKENS local curr_token = #TOKENS
while curr_token > 0 and TOKENS[curr_token].type ~= "START_OPENING_TAG" do while curr_token > 0 and TOKENS[curr_token].type ~= "START_OPENING_TAG" do
curr_token = curr_token - 1 curr_token = curr_token - 1
end end
curr_token = curr_token + 1 curr_token = curr_token + 1
if curr_token == 1 and TOKENS[curr_token].type ~= "START_OPENING_TAG" then if curr_token <= #TOKENS and TOKENS[curr_token].type == "WORD" then
error("Error: Reached start of token stream while winding back to find tag name; Not supposed to be possible.")
end
local tagname = TOKENS[curr_token].value local tagname = TOKENS[curr_token].value
if RAW_TEXT_TAGS[tagname] then if RAW_TEXT_TAGS[tagname] then
local end_tag = (content:find("</"..tagname, i, true) or 0) - 1 local end_tag = (content:find("</"..tagname, i, true) or 0) - 1
if end_tag < 1 then if end_tag < 1 then
@ -405,199 +374,121 @@ function M.tokenise( content )
print(content:sub(i)) print(content:sub(i))
os.exit(-5) os.exit(-5)
end end
local text_content = content:sub(i+1, end_tag) local text_content = content:sub(i+1, end_tag)
-- Special handling of pre
-- special handling of pre
if tagname == "pre" then if tagname == "pre" then
-- check if it "looks" like HTML -- Check if it "looks" like HTML
if text_content:find("<", 1, true) and text_content:find(">", 1, true) then if text_content:find("<", 1, true) and text_content:find(">", 1, true) then
-- tokenise the inner text -- Tokenise the inner text
local text_tokens = M.tokenise( text_content ) local text_tokens = M.tokenise(text_content)
-- Add it to the current token list
-- and add it to the current token list
for _, tok in ipairs(text_tokens) do for _, tok in ipairs(text_tokens) do
table.insert( TOKENS, tok ) table.insert(TOKENS, tok)
end end
i = end_tag i = end_tag
goto continue goto continue
end end
end end
-- treat the rest as text -- Treat the rest as text
i = end_tag i = end_tag
table.insert( TOKENS, {type="TEXT", value=text_content} ) table.insert(TOKENS, {type="TEXT", value=text_content})
goto continue
end
end
end
in_tag = nil
goto continue goto continue
end end
-- Handle content within tags
goto continue
end
----------------------------------------------------
--- "OLD", UNCHECKED CODE
-- if char == ">" and in_tag and currently_opened_quotes == nil then
-- if #text_memory ~= 0 then
-- local word = trim(text_memory)
-- if not word:match("^%s*$") then
-- table.insert( TOKENS, {type="WORD", value=word})
-- end
-- text_memory = ""
-- end
-- table.insert( TOKENS, {type = "END_TAG"} )
-- local curr_token = #TOKENS
-- while curr_token > 0 and (TOKENS[curr_token].type ~= "START_OPENING_TAG" or TOKENS[curr_token].type ~= "START_CLOSING_TAG") do
-- curr_token = curr_token - 1
-- end
-- curr_token = curr_token + 1
-- if curr_token == 1 and TOKENS[curr_token].type ~= "START_OPENING_TAG" and TOKENS[curr_token].type ~= "START_CLOSING_TAG" then
-- error("Error: Reached start of token stream while winding back to find tag name; Not supposed to be possible.")
-- end
-- if TOKENS[curr_token].type == "START_CLOSING_TAG" then
-- goto continue
-- end
-- local tagname = TOKENS[curr_token+1].value
-- if RAW_TEXT_TAGS[tagname] then
-- logger.printerr("Warning: "..tagname.." tags may contain text that would be incorrectly parsed as HTML.")
-- print(content:sub(1,i-1))
-- print(("="):rep(40))
-- print(content:sub(i))
-- local end_tag = content:find("</"..tagname, i, true) - 1
-- local text_content = content:sub(i+1, end_tag)
-- if tagname == "pre" and false then
-- -- check if it "looks" like HTML
-- if text_content:find("<", 1, true) and text_content:find(">", 1, true) then
-- -- tokenise the inner text
-- local text_tokens = M.tokenise( text_content )
-- -- and add it to the current token list
-- for _, tok in ipairs(text_tokens) do
-- if tok.value == nil then
-- print( "\t::: " .. tok.type )
-- else
-- print( "\t::: " .. tok.type .. ": " .. tostring(tok.value) )
-- end
-- table.insert( TOKENS, tok )
-- end
-- else
-- -- treat it as text
-- table.insert( TOKENS, {type="TEXT", value=text_content} )
-- end
-- end
-- i = end_tag
-- end
-- in_tag = false
-- goto continue
-- end
-- if #text_memory ~= 0 then
-- if in_tag and currently_opened_quotes == nil then
-- local word = trim(text_memory)
-- if TOKENS[#TOKENS] and ( TOKENS[#TOKENS].type == "START_OPENING_TAG") then
-- if RAW_TEXT_TAGS[word] then
-- logger.printerr("Warning: "..word.." tags may contain text that would be incorrectly parsed as HTML.")
-- -- made possible because of the whitespace removal at the start
-- i = content:find("</"..word, i, true) - 1
-- end
-- end
-- if not word:match("^%s*$") then
-- table.insert( TOKENS, {type="WORD", value=word})
-- end
-- else
-- table.insert( TOKENS, {type="TEXT", value=text_memory} )
-- end
-- text_memory = ""
-- end
-- in_tag = false
-- table.insert( TOKENS, {type = "END_TAG"} )
-- goto continue
-- end
if in_tag then if in_tag then
if currently_opened_quotes == nil and char:match("%s") then -- Handle quoted content
if #text_memory ~= 0 then if currently_opened_quotes ~= nil then
local word = trim(text_memory) if char == currently_opened_quotes then
-- End of quoted section
-- if TOKENS[#TOKENS] and ( TOKENS[#TOKENS].type == "START_OPENING_TAG" ) then
-- if RAW_TEXT_TAGS[word] then
-- logger.printerr("Warning: "..word.." tags may contain text that would be incorrectly parsed as HTML.")
-- text_memory = ""
-- -- advance to closing ">"
-- i = content:find(">", i, true)
-- -- made possible because of the whitespace removal at the start
-- i = content:find("</"..word, i, true) - 1
-- end
-- end
if not word:match("^%s*$") then
table.insert( TOKENS, {type="WORD", value=word})
text_memory = ""
end
goto continue
end
end
-- if char == "'" or char == '"' then
-- -- found matching closing quote type
-- if char == currently_opened_quotes then
-- currently_opened_quotes = nil
-- elseif currently_opened_quotes == nil then
-- currently_opened_quotes = char
-- end
-- end
text_memory = text_memory .. char text_memory = text_memory .. char
goto continue currently_opened_quotes = nil
else
-- Continue collecting quoted content
text_memory = text_memory .. char
end
else
-- Start of quoted section
if char == "'" or char == '"' then
text_memory = text_memory .. char
currently_opened_quotes = char
-- Handle equals sign
elseif char == "=" then
-- If we have an attribute name saved and empty text_memory, this is an equals after whitespace
if attr_name and #text_memory == 0 then
text_memory = attr_name .. "="
attr_name = nil
else
text_memory = text_memory .. "="
end
-- Handle whitespace in tags
elseif char:match("%s") then
-- If we have text and it doesn't end with =, it might be an attribute name
if #text_memory > 0 then
-- Check if the next non-whitespace char is an equals sign
local next_pos = i + 1
while next_pos <= #content do
local next_char = content:sub(next_pos, next_pos)
if not next_char:match("%s") then
if next_char == "=" then
-- This is an attribute name followed by whitespace and equals
attr_name = text_memory
text_memory = ""
else
-- This is a complete word
local word = trim(text_memory)
if not word:match("^%s*$") then
table.insert(TOKENS, {type="WORD", value=word})
end
text_memory = ""
attr_name = nil
end
break
end
next_pos = next_pos + 1
end
-- If we reached the end of the content
if next_pos > #content then
local word = trim(text_memory)
if not word:match("^%s*$") then
table.insert(TOKENS, {type="WORD", value=word})
end
text_memory = ""
attr_name = nil
end
end
else else
text_memory = text_memory .. char text_memory = text_memory .. char
goto continue
end end
end
else
-- We're not in a tag, so collect text content
text_memory = text_memory .. char
end
::continue:: ::continue::
i = i+1 i = i + 1
end end
-- Handle any remaining text
if #text_memory > 0 then
if in_tag then
local word = trim(text_memory)
if not word:match("^%s*$") then
table.insert(TOKENS, {type="WORD", value=word})
end
else
table.insert(TOKENS, {type="TEXT", value=text_memory})
end
end
return TOKENS return TOKENS
end end