Merge: Added contributing guidelines and link from readme

[nit.git] / lib / core / text / flat.nit

diff --git a/lib/core/text/flat.nit b/lib/core/text/flat.nit
index 09dc9ad..6273609 100644 (file)
--- a/lib/core/text/flat.nit
+++ b/lib/core/text/flat.nit
@@ -225,6 +225,22 @@ redef class FlatText
                                req_esc += 1
                        else if c == 0x5Cu8 then
                                req_esc += 1
+                       else if c == 0x3Fu8 then
+                               var j = pos + 1
+                               if j < length then
+                                       var next = its[j]
+                                       # We ignore `??'` because it will be escaped as `??\'`.
+                                       if
+                                               next == 0x21u8 or
+                                               next == 0x28u8 or
+                                               next == 0x29u8 or
+                                               next == 0x2Du8 or
+                                               next == 0x2Fu8 or
+                                               next == 0x3Cu8 or
+                                               next == 0x3Du8 or
+                                               next == 0x3Eu8
+                                       then req_esc += 1
+                               end
                        else if c < 32u8 then
                                req_esc += 3
                        end
@@ -280,6 +296,27 @@ redef class FlatText
                                nns[opos] = 0x5Cu8
                                nns[opos + 1] = 0x5Cu8
                                opos += 2
+                       else if c == 0x3Fu8 then
+                               var j = pos + 1
+                               if j < length then
+                                       var next = its[j]
+                                       # We ignore `??'` because it will be escaped as `??\'`.
+                                       if
+                                               next == 0x21u8 or
+                                               next == 0x28u8 or
+                                               next == 0x29u8 or
+                                               next == 0x2Du8 or
+                                               next == 0x2Fu8 or
+                                               next == 0x3Cu8 or
+                                               next == 0x3Du8 or
+                                               next == 0x3Eu8
+                                       then
+                                               nns[opos] = 0x5Cu8
+                                               opos += 1
+                                       end
+                               end
+                               nns[opos] = 0x3Fu8
+                               opos += 1
                        else if c < 32u8 then
                                nns[opos] = 0x5Cu8
                                nns[opos + 1] = 0x30u8
@@ -369,6 +406,10 @@ redef class FlatText
                end
                return res
        end
+
+       redef fun copy_to_native(dst, n, src_off, dst_off) do
+               _items.copy_to(dst, n, first_byte + src_off, dst_off)
+       end
 end
 
 # Immutable strings of characters.
@@ -666,15 +707,15 @@ private class ASCIIFlatString
        end
 
        redef fun substring(from, count) do
+               var ln = _length
+               if count <= 0 then return ""
+               if (count + from) > ln then count = ln - from
                if count <= 0 then return ""
-
                if from < 0 then
                        count += from
-                       if count < 0 then return ""
+                       if count <= 0 then return ""
                        from = 0
                end
-               var ln = _length
-               if (count + from) > ln then count = ln - from
                return new ASCIIFlatString.full_data(_items, count, from + _first_byte, count)
        end
 
@@ -994,15 +1035,10 @@ class FlatBuffer
        init from(s: Text)
        do
                _items = new NativeString(s.bytelen)
-               if s isa FlatText then
-                       _items = s._items
-               else
-                       for i in substrings do i.as(FlatString)._items.copy_to(_items, i._bytelen, 0, 0)
-               end
+               for i in s.substrings do i._items.copy_to(_items, i._bytelen, first_byte, 0)
                _bytelen = s.bytelen
                _length = s.length
                _capacity = _bytelen
-               written = true
        end
 
        # Create a new empty string with a given capacity.