[Github-comments] Re: [geany/geany-plugins] [GeanyLua Plugin] Lua script that performs a multi find and replace (Issue #1590)

[Skif-off via Github-comments]

Skif-off left a comment (geany/geany-plugins#1590)

Added check that the document is not empty:
```lua
-- Replace-by-list.lua (cross-platform)
-- 2026.07.23
--[[
Find & replace by list. See the "aFR" table (the third parameter is the
parameters of the "geany.find" function, see
https://plugins.geany.org/geanylua/geanylua-ref.html).
Idea: https://github.com/geany/geany-plugins/issues/1590

P.S. If the found string is located at the beginning of the selection,
then for some reason after the replacement the selection starts AFTER
the replacement string. So, we will "restore" the selection.
]]

local aFR = {
{"find1", "replace1", {"matchcase"}},
{"find2", "replace2", {}},
{"find3", "replace3", {"matchcase", "wholeword"}}
}

local function IsRegExp(iN)
  if #aFR[iN][3] == 0 then return false end
  for i = 1, #aFR[iN][3] do
    if aFR[iN][3][i] == "regexp" then return true end
  end
  return false
end

local function ReplaceFull()
  local iSciM, iPS, iPE, iS, iE, iLR, iLRR
  -- SCI_BEGINUNDOACTION
  geany.scintilla(2078, 0, 0)
  for i = 1, #aFR do
    -- SCI_REPLACETARGET (2194) or SCI_REPLACETARGETRE (2195)
    if IsRegExp(i) == false then iSciM = 2194 else iSciM = 2195 end
    iPS = 0
    iPE = geany.length()
    iLR = string.len(aFR[i][2])
    while true do
      iS, iE = geany.find(aFR[i][1], iPS, iPE, aFR[i][3])
      if iS == nil then break end
      -- SCI_SETTARGETSTART
      geany.scintilla(2190, iS, 0)
      -- SCI_SETTARGETEND
      geany.scintilla(2192, iE, 0)
      -- SCI_REPLACETARGET or SCI_REPLACETARGETRE
      iLRR = geany.scintilla(iSciM, iLR, aFR[i][2])
      iPS = iS + iLRR
      iPE = geany.length()
    end
  end
  -- SCI_ENDUNDOACTION
  geany.scintilla(2079, 0, 0)
end

local function ReplaceInSel(iN1, iN2)
  local iSciM, iPS, iPE, iS, iE, iLR, iLRR
  -- SCI_BEGINUNDOACTION
  geany.scintilla(2078, 0, 0)
  iPE = iN2
  for i = 1, #aFR do
    -- SCI_REPLACETARGET (2194) or SCI_REPLACETARGETRE (2195)
    if IsRegExp(i) == false then iSciM = 2194 else iSciM = 2195 end
    iPS = iN1
    iLR = string.len(aFR[i][2])
    while true do
      iS, iE = geany.find(aFR[i][1], iPS, iPE, aFR[i][3])
      if iS == nil then break end
      -- SCI_SETTARGETSTART
      geany.scintilla(2190, iS, 0)
      -- SCI_SETTARGETEND
      geany.scintilla(2192, iE, 0)
      -- SCI_REPLACETARGET or SCI_REPLACETARGETRE
      iLRR = geany.scintilla(iSciM, iLR, aFR[i][2])
      iPS = iS + iLRR
      iPE = iPE - (iE - iS) + iLRR
    end
  end
  -- SCI_ENDUNDOACTION
  geany.scintilla(2079, 0, 0)
  return iN1, iPE
end

local sSel = geany.selection()
if sSel == nil then
  geany.message("There is no open document!")
  return
end
-- SCI_GETLENGTH
local iL = geany.scintilla(2006, 0, 0)
if iL == 0 then
  geany.message("Is the document empty?")
  return
end
local iStart, iStop = geany.select()
if iStart == iStop then
  ReplaceFull()
else
  local iStartN, iStopN
  if iStart < iStop then
    iStartN, iStopN = ReplaceInSel(iStart, iStop)
    geany.select(iStartN, iStopN)
  elseif iStart > iStop then
    iStopN, iStartN = ReplaceInSel(iStop, iStart)
    geany.select(iStopN, iStartN)
  end
end

geany.status(geany.basename(geany.script) .. ": Done.")
```

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