mirror of
https://github.com/morpheus65535/bazarr
synced 2024-12-26 09:37:25 +00:00
275 lines
11 KiB
Python
275 lines
11 KiB
Python
from __future__ import print_function, division, unicode_literals
|
|
import re
|
|
from numbers import Number
|
|
from .formatbase import FormatBase
|
|
from .ssaevent import SSAEvent
|
|
from .ssastyle import SSAStyle
|
|
from .common import text_type, Color, PY3, binary_string_type
|
|
from .time import make_time, ms_to_times, timestamp_to_ms, TIMESTAMP
|
|
|
|
SSA_ALIGNMENT = (1, 2, 3, 9, 10, 11, 5, 6, 7)
|
|
|
|
def ass_to_ssa_alignment(i):
|
|
return SSA_ALIGNMENT[i-1]
|
|
|
|
def ssa_to_ass_alignment(i):
|
|
return SSA_ALIGNMENT.index(i) + 1
|
|
|
|
SECTION_HEADING = re.compile(r"^.{,3}\[[^\]]+\]") # allow for UTF-8 BOM, which is 3 bytes
|
|
|
|
STYLE_FORMAT_LINE = {
|
|
"ass": "Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic,"
|
|
" Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment,"
|
|
" MarginL, MarginR, MarginV, Encoding",
|
|
"ssa": "Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, TertiaryColour, BackColour, Bold, Italic,"
|
|
" BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding"
|
|
}
|
|
|
|
STYLE_FIELDS = {
|
|
"ass": ["fontname", "fontsize", "primarycolor", "secondarycolor", "outlinecolor", "backcolor", "bold", "italic",
|
|
"underline", "strikeout", "scalex", "scaley", "spacing", "angle", "borderstyle", "outline", "shadow",
|
|
"alignment", "marginl", "marginr", "marginv", "encoding"],
|
|
"ssa": ["fontname", "fontsize", "primarycolor", "secondarycolor", "tertiarycolor", "backcolor", "bold", "italic",
|
|
"borderstyle", "outline", "shadow", "alignment", "marginl", "marginr", "marginv", "alphalevel", "encoding"]
|
|
}
|
|
|
|
EVENT_FORMAT_LINE = {
|
|
"ass": "Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text",
|
|
"ssa": "Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text"
|
|
}
|
|
|
|
EVENT_FIELDS = {
|
|
"ass": ["layer", "start", "end", "style", "name", "marginl", "marginr", "marginv", "effect", "text"],
|
|
"ssa": ["marked", "start", "end", "style", "name", "marginl", "marginr", "marginv", "effect", "text"]
|
|
}
|
|
|
|
#: Largest timestamp allowed in SubStation, ie. 9:59:59.99.
|
|
MAX_REPRESENTABLE_TIME = make_time(h=10) - 10
|
|
|
|
def ms_to_timestamp(ms):
|
|
"""Convert ms to 'H:MM:SS.cc'"""
|
|
# XXX throw on overflow/underflow?
|
|
if ms < 0: ms = 0
|
|
if ms > MAX_REPRESENTABLE_TIME: ms = MAX_REPRESENTABLE_TIME
|
|
h, m, s, ms = ms_to_times(ms)
|
|
return "%01d:%02d:%02d.%02d" % (h, m, s, ms//10)
|
|
|
|
def color_to_ass_rgba(c):
|
|
return "&H%08X" % ((c.a << 24) | (c.b << 16) | (c.g << 8) | c.r)
|
|
|
|
def color_to_ssa_rgb(c):
|
|
return "%d" % ((c.b << 16) | (c.g << 8) | c.r)
|
|
|
|
def ass_rgba_to_color(s):
|
|
x = int(s[2:], base=16)
|
|
r = x & 0xff
|
|
g = (x >> 8) & 0xff
|
|
b = (x >> 16) & 0xff
|
|
a = (x >> 24) & 0xff
|
|
return Color(r, g, b, a)
|
|
|
|
def ssa_rgb_to_color(s):
|
|
x = int(s)
|
|
r = x & 0xff
|
|
g = (x >> 8) & 0xff
|
|
b = (x >> 16) & 0xff
|
|
return Color(r, g, b)
|
|
|
|
def is_valid_field_content(s):
|
|
"""
|
|
Returns True if string s can be stored in a SubStation field.
|
|
|
|
Fields are written in CSV-like manner, thus commas and/or newlines
|
|
are not acceptable in the string.
|
|
|
|
"""
|
|
return "\n" not in s and "," not in s
|
|
|
|
|
|
def parse_tags(text, style=SSAStyle.DEFAULT_STYLE, styles={}):
|
|
"""
|
|
Split text into fragments with computed SSAStyles.
|
|
|
|
Returns list of tuples (fragment, style), where fragment is a part of text
|
|
between two brace-delimited override sequences, and style is the computed
|
|
styling of the fragment, ie. the original style modified by all override
|
|
sequences before the fragment.
|
|
|
|
Newline and non-breakable space overrides are left as-is.
|
|
|
|
Supported override tags:
|
|
|
|
- i, b, u, s
|
|
- r (with or without style name)
|
|
|
|
"""
|
|
|
|
fragments = SSAEvent.OVERRIDE_SEQUENCE.split(text)
|
|
if len(fragments) == 1:
|
|
return [(text, style)]
|
|
|
|
def apply_overrides(all_overrides):
|
|
s = style.copy()
|
|
for tag in re.findall(r"\\[ibusp][0-9]|\\r[a-zA-Z_0-9 ]*", all_overrides):
|
|
if tag == r"\r":
|
|
s = style.copy() # reset to original line style
|
|
elif tag.startswith(r"\r"):
|
|
name = tag[2:]
|
|
if name in styles:
|
|
s = styles[name].copy() # reset to named style
|
|
else:
|
|
if "i" in tag: s.italic = "1" in tag
|
|
elif "b" in tag: s.bold = "1" in tag
|
|
elif "u" in tag: s.underline = "1" in tag
|
|
elif "s" in tag: s.strikeout = "1" in tag
|
|
elif "p" in tag:
|
|
try:
|
|
scale = int(tag[2:])
|
|
except (ValueError, IndexError):
|
|
continue
|
|
|
|
s.drawing = scale > 0
|
|
return s
|
|
|
|
overrides = SSAEvent.OVERRIDE_SEQUENCE.findall(text)
|
|
overrides_prefix_sum = ["".join(overrides[:i]) for i in range(len(overrides) + 1)]
|
|
computed_styles = map(apply_overrides, overrides_prefix_sum)
|
|
return list(zip(fragments, computed_styles))
|
|
|
|
|
|
NOTICE = "Script generated by pysubs2\nhttps://pypi.python.org/pypi/pysubs2"
|
|
|
|
class SubstationFormat(FormatBase):
|
|
@classmethod
|
|
def guess_format(cls, text):
|
|
if "V4+ Styles" in text:
|
|
return "ass"
|
|
elif "V4 Styles" in text:
|
|
return "ssa"
|
|
|
|
@classmethod
|
|
def from_file(cls, subs, fp, format_, **kwargs):
|
|
|
|
def string_to_field(f, v):
|
|
if f in {"start", "end"}:
|
|
if v.startswith("-"):
|
|
# handle negative timestamps
|
|
v = v[1:]
|
|
return -timestamp_to_ms(TIMESTAMP.match(v).groups())
|
|
else:
|
|
return timestamp_to_ms(TIMESTAMP.match(v).groups())
|
|
elif "color" in f:
|
|
if format_ == "ass":
|
|
return ass_rgba_to_color(v)
|
|
else:
|
|
return ssa_rgb_to_color(v)
|
|
elif f in {"bold", "underline", "italic", "strikeout"}:
|
|
return v == "-1"
|
|
elif f in {"borderstyle", "encoding", "marginl", "marginr", "marginv", "layer", "alphalevel"}:
|
|
return int(v)
|
|
elif f in {"fontsize", "scalex", "scaley", "spacing", "angle", "outline", "shadow"}:
|
|
return float(v)
|
|
elif f == "marked":
|
|
return v.endswith("1")
|
|
elif f == "alignment":
|
|
i = int(v)
|
|
if format_ == "ass":
|
|
return i
|
|
else:
|
|
return ssa_to_ass_alignment(i)
|
|
else:
|
|
return v
|
|
|
|
subs.info.clear()
|
|
subs.aegisub_project.clear()
|
|
subs.styles.clear()
|
|
|
|
inside_info_section = False
|
|
inside_aegisub_section = False
|
|
|
|
for line in fp:
|
|
line = line.strip()
|
|
|
|
if SECTION_HEADING.match(line):
|
|
inside_info_section = "Info" in line
|
|
inside_aegisub_section = "Aegisub" in line
|
|
elif inside_info_section or inside_aegisub_section:
|
|
if line.startswith(";"): continue # skip comments
|
|
try:
|
|
k, v = line.split(":", 1)
|
|
if inside_info_section:
|
|
subs.info[k] = v.strip()
|
|
elif inside_aegisub_section:
|
|
subs.aegisub_project[k] = v.strip()
|
|
except ValueError:
|
|
pass
|
|
elif line.startswith("Style:"):
|
|
_, rest = line.split(":", 1)
|
|
buf = rest.strip().split(",")
|
|
name, raw_fields = buf[0], buf[1:] # splat workaround for Python 2.7
|
|
field_dict = {f: string_to_field(f, v) for f, v in zip(STYLE_FIELDS[format_], raw_fields)}
|
|
sty = SSAStyle(**field_dict)
|
|
subs.styles[name] = sty
|
|
elif line.startswith("Dialogue:") or line.startswith("Comment:"):
|
|
ev_type, rest = line.split(":", 1)
|
|
raw_fields = rest.strip().split(",", len(EVENT_FIELDS[format_])-1)
|
|
field_dict = {f: string_to_field(f, v) for f, v in zip(EVENT_FIELDS[format_], raw_fields)}
|
|
field_dict["type"] = ev_type
|
|
ev = SSAEvent(**field_dict)
|
|
subs.events.append(ev)
|
|
|
|
|
|
@classmethod
|
|
def to_file(cls, subs, fp, format_, header_notice=NOTICE, **kwargs):
|
|
print("[Script Info]", file=fp)
|
|
for line in header_notice.splitlines(False):
|
|
print(";", line, file=fp)
|
|
|
|
subs.info["ScriptType"] = "v4.00+" if format_ == "ass" else "v4.00"
|
|
for k, v in subs.info.items():
|
|
print(k, v, sep=": ", file=fp)
|
|
|
|
if subs.aegisub_project:
|
|
print("\n[Aegisub Project Garbage]", file=fp)
|
|
for k, v in subs.aegisub_project.items():
|
|
print(k, v, sep=": ", file=fp)
|
|
|
|
def field_to_string(f, v, line):
|
|
if f in {"start", "end"}:
|
|
return ms_to_timestamp(v)
|
|
elif f == "marked":
|
|
return "Marked=%d" % v
|
|
elif f == "alignment" and format_ == "ssa":
|
|
return text_type(ass_to_ssa_alignment(v))
|
|
elif isinstance(v, bool):
|
|
return "-1" if v else "0"
|
|
elif isinstance(v, (text_type, Number)):
|
|
return text_type(v)
|
|
elif not PY3 and isinstance(v, binary_string_type):
|
|
# A convenience feature, see issue #12 - accept non-unicode strings
|
|
# when they are ASCII; this is useful in Python 2, especially for non-text
|
|
# fields like style names, where requiring Unicode type seems too stringent
|
|
if all(ord(c) < 128 for c in v):
|
|
return text_type(v)
|
|
else:
|
|
raise TypeError("Encountered binary string with non-ASCII codepoint in SubStation field {!r} for line {!r} - please use unicode string instead of str".format(f, line))
|
|
elif isinstance(v, Color):
|
|
if format_ == "ass":
|
|
return color_to_ass_rgba(v)
|
|
else:
|
|
return color_to_ssa_rgb(v)
|
|
else:
|
|
raise TypeError("Unexpected type when writing a SubStation field {!r} for line {!r}".format(f, line))
|
|
|
|
print("\n[V4+ Styles]" if format_ == "ass" else "\n[V4 Styles]", file=fp)
|
|
print(STYLE_FORMAT_LINE[format_], file=fp)
|
|
for name, sty in subs.styles.items():
|
|
fields = [field_to_string(f, getattr(sty, f), sty) for f in STYLE_FIELDS[format_]]
|
|
print("Style: %s" % name, *fields, sep=",", file=fp)
|
|
|
|
print("\n[Events]", file=fp)
|
|
print(EVENT_FORMAT_LINE[format_], file=fp)
|
|
for ev in subs.events:
|
|
fields = [field_to_string(f, getattr(ev, f), ev) for f in EVENT_FIELDS[format_]]
|
|
print(ev.type, end=": ", file=fp)
|
|
print(*fields, sep=",", file=fp)
|