diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/field.nim | 47 |
1 files changed, 26 insertions, 21 deletions
diff --git a/src/field.nim b/src/field.nim index 82a8575..384cb47 100644 --- a/src/field.nim +++ b/src/field.nim @@ -1,5 +1,5 @@ type - Line = ref object + Line = object x: int columns: seq[int] @@ -11,7 +11,7 @@ type func Blank*(f: var Field, x, y: int) = if y < f.y or y >= f.y+f.ly: # outside the field return - var l = f.lines[y-f.y] + var l = addr f.lines[y-f.y] if x < l.x or x >= l.x+l.columns.len: # outside the field return if x > l.x and x < l.x+l.columns.len-1: # just set the value @@ -20,14 +20,14 @@ func Blank*(f: var Field, x, y: int) = if l.columns.len == 1: # this was the last character on the line if y == f.y: # we need to trim the leading lines var i = 1 - while f.lines[i] == nil or f.lines[i].columns.len == 0: + while f.lines[i].columns.len == 0: inc i f.y += i f.lines = f.lines[i..<f.ly] f.ly -= i elif y == f.y+f.ly-1: # we need to trim the trailing lines var i = f.ly-2 - while f.lines[i] == nil or f.lines[i].columns.len == 0: + while f.lines[i].columns.len == 0: dec i f.ly = i+1 f.lines = f.lines[0..<f.ly] @@ -48,7 +48,7 @@ func Blank*(f: var Field, x, y: int) = f.x = f.lines[0].x var x2 = f.lines[0].columns.len + f.lines[0].x for i in 1..<f.ly: - if f.lines[i] == nil or f.lines[i].columns.len == 0: + if f.lines[i].columns.len == 0: continue if f.x > f.lines[i].x: f.x = f.lines[i].x @@ -71,8 +71,10 @@ proc Load*(filename: string): ref Field = if not open(file, filename): return nil defer: file.close() - var f = new(Field) - var l = new(Line) + var f: ref Field + new(f) + var l : ptr Line + var leadingSpaces = 0 var trailingSpaces = 0 var data: array[4096, char] var lastReadIsCR = false @@ -80,13 +82,12 @@ proc Load*(filename: string): ref Field = let n = file.readChars(data, 0, 4096) if n <= 0: if f.ly == 0: - if l.columns.len == 0: # we got en empty file! + if l == nil: # we got en empty file! return nil f.x = l.x - if l.columns.len > 0: + if l != nil: if f.lx < l.columns.len+l.x-f.x: f.lx = l.columns.len+l.x-f.x - f.lines.add(l) inc f.ly break var i = 0 @@ -100,17 +101,18 @@ proc Load*(filename: string): ref Field = continue if data[i] == '\n' or data[i] == '\r': if f.ly == 0: - if l.columns.len == 0: + if l == nil: return nil f.x = l.x - if l.columns.len > 0: + if l != nil: if f.x > l.x: f.x = l.x if f.lx < l.columns.len+l.x-f.x: f.lx = l.columns.len+l.x-f.x + else: + f.lines.add(Line()) inc f.ly - f.lines.add(l) - l = new(Line) + l = nil trailingSpaces = 0 if data[i] == '\r': if i+1 < n and data[i+1] == '\n': @@ -119,11 +121,16 @@ proc Load*(filename: string): ref Field = lastReadIsCR = true else: if data[i] == ' ': - if l.columns.len == 0: # trim leading spaces - inc l.x + if l == nil: # trim leading spaces + inc leadingSpaces else: inc trailingSpaces else: + if l == nil: + f.lines.add(Line()) + l = addr f.lines[^1] + l.x = leadingSpaces + leadingSpaces = 0 if trailingSpaces > 0: let oldL = l.columns.len l.columns.setlen(oldL+trailingSpaces+1) @@ -134,6 +141,7 @@ proc Load*(filename: string): ref Field = else: l.columns.add(int(data[i])) inc i + f.lines = f.lines[0..<f.ly] return f func Set*(f: var Field, x, y, v: int) = @@ -141,13 +149,10 @@ func Set*(f: var Field, x, y, v: int) = f.Blank(x, y) elif y >= f.y: if y < f.y+f.ly: # the line exists - var l = f.lines[y-f.y] - if l == nil or l.columns.len == 0: # An empty line is a special case - if l == nil: - new(l) + var l = addr f.lines[y-f.y] + if l.columns.len == 0: # An empty line is a special case l.x = x l.columns = @[v] - f.lines[y-f.y] = l if f.x > x: f.lx = f.lx+f.x-x f.x = x |