1 files changed, 250 insertions, 0 deletions
diff --git a/Data/BuiltIn/Libraries/lua-addons/addons/libs/files.lua b/Data/BuiltIn/Libraries/lua-addons/addons/libs/files.lua
new file mode 100644
index 0000000..52a9909
--- /dev/null
+++ b/Data/BuiltIn/Libraries/lua-addons/addons/libs/files.lua
@@ -0,0 +1,250 @@
+--[[
+File handler.
+]]
+
+_libs = _libs or {}
+
+require('strings')
+require('tables')
+
+local string, table = _libs.strings, _libs.tables
+
+local files = {}
+
+_libs.files = files
+
+-- Create a new file object.
+function files.new(path, create)
+    return setmetatable({_create = create == true or nil, path = path}, {__index = files})
+end
+
+-- Creates a new file. Creates path, if necessary.
+function files.create(f)
+    f:create_path()
+    local fh = io.open(windower.addon_path .. f.path, 'w')
+    fh:write('')
+    fh:close()
+
+    f._create = nil
+
+    return f
+end
+
+-- Check if file exists. There's no better way, it would seem.
+function files.exists(f)
+    local path
+
+    if type(f) == 'string' then
+        path = f
+    else
+        if not f.path then
+            return nil, 'No file path set, cannot check file.'
+        end
+
+        path = f.path
+    end
+
+    return windower.file_exists(windower.addon_path .. path)
+end
+
+-- Checks existance of a number of paths, returns the first that exists.
+function files.check(...)
+    return table.find[2]({...}, files.exists)
+end
+
+-- Read from file and return string of the contents.
+function files.read(f)
+    local path
+    if type(f) == 'string' then
+        if not files.exists(f) then
+            return nil, 'File \'' .. f .. '\' not found, cannot read.'
+        end
+
+        path = f
+    else
+        if not f.path then
+            return nil, 'No file path set, cannot write.'
+        end
+
+        if not f:exists() then
+            if f._create then
+                return ''
+            else
+                return nil, 'File \'' .. f.path .. '\' not found, cannot read.'
+            end
+        end
+
+        path = f.path
+    end
+
+    local fh = io.open(windower.addon_path .. path, 'r')
+    local content = fh:read('*all*')
+    fh:close()
+
+    -- Remove byte order mark for UTF-8, if present
+    if content:sub(1, 3) == string.char(0xEF, 0xBB, 0xBF) then
+        content = content:sub(4)
+    end
+
+    return content
+end
+
+-- Creates a directory.
+function files.create_path(f)
+    local path
+    if type(f) == 'string' then
+        path = f
+    else
+        if not f.path then
+            return nil, 'No file path set, cannot create directories.'
+        end
+
+        path = f.path:match('(.*)[/\\].-')
+
+        if not path then
+            return nil, 'File path already in addon directory: ' .. windower.addon_path .. f.path
+        end
+    end
+
+    newpath = windower.addon_path
+    for dir in path:psplit('[/\\]'):filter(-''):it() do
+        newpath = newpath .. dir .. '/'
+
+        if not windower.dir_exists(newpath) then
+            local res, err = windower.create_dir(newpath)
+            if not res then
+                if err then
+                    return nil, err .. ': ' .. newpath
+                end
+
+                return nil, 'Unknown error trying to create path ' .. newpath
+            end
+        end
+    end
+
+    return newpath
+end
+
+-- Read from file and return lines of the contents in a table.
+function files.readlines(f)
+    return files.read(f):split('\n')
+end
+
+-- Return an iterator over the lines of a file.
+function files.it(f)
+    local path
+    if type(f) == 'string' then
+        if not files.exists(f) then
+            return nil, 'File \'' .. f .. '\' not found, cannot read.'
+        end
+
+        path = f
+    else
+        if not f.path then
+            return nil, 'No file path set, cannot write.'
+        end
+
+        if not f:exists() then
+            if f._create then
+                return ''
+            else
+                return nil, 'File \'' .. f.path .. '\' not found, cannot read.'
+            end
+        end
+
+        path = f.path
+    end
+
+    return io.lines(windower.addon_path .. path)
+end
+
+-- Write to file. Overwrites everything within the file, if present.
+function files.write(f, content, flush)
+    local path
+    if type(f) == 'string' then
+        if not files.exists(f) then
+            return nil, 'File \'' .. f .. '\' not found, cannot write.'
+        end
+
+        path = f
+    else
+        if not f.path then
+            return nil, 'No file path set, cannot write.'
+        end
+
+        if not f:exists() then
+            if f.path then
+                (_libs.logger and notice or print)('New file: ' .. f.path)
+                f:create()
+            else
+                return nil, 'File \'' .. f.path .. '\' not found, cannot write.'
+            end
+        end
+
+        path = f.path
+    end
+
+    if type(content) == 'table' then
+        content = table.concat(content)
+    end
+
+    local fh = io.open(windower.addon_path .. path, 'w')
+    fh:write(content)
+    if flush then
+        fh:flush()
+    end
+    fh:close()
+
+    return f
+end
+
+-- Append to file. Sets a newline per default, unless newline is set to false.
+function files.append(f, content, flush)
+    local path
+    if type(f) == 'string' then
+        if not files.exists(f) then
+            return nil, 'File \'' .. f .. '\' not found, cannot write.'
+        end
+
+        path = f
+    else
+        if not f.path then
+            return nil, 'No file path set, cannot write.'
+        end
+
+        if not f:exists() then
+            if f._create then
+                (_libs.logger and notice or print)('New file: ' .. f.path)
+                f:create()
+            else
+                return nil, 'File \'' .. f.path .. '\' not found, cannot write.'
+            end
+        end
+
+        path = f.path
+    end
+
+    local fh = io.open(windower.addon_path .. path, 'a')
+    fh:write(content)
+    if flush then
+        fh:flush()
+    end
+    fh:close()
+
+    return f
+end
+
+return files
+
+--[[
+Copyright © 2013-2014, Windower
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+    * Neither the name of Windower nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Windower BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+]]