mirror of
https://github.com/kennethreitz/rhymepad.org.git
synced 2026-06-11 17:08:33 +00:00
kennethreitz
b0c4af345a
- Clicking a lookup result now opens a dictionary definition card (dictionaryapi.dev) with insertion as an explicit button - Meter-break warnings live behind a "meter check" toolbar toggle (persisted, off by default) - Lines starting with #, ( or [ are annotations: never highlighted, no scheme letter, and they don't split stanzas - Removed stanza reordering Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
688 lines
26 KiB
Python
688 lines
26 KiB
Python
"""RhymePad — phoneme-aware rhyme analysis for poets & rappers.
|
|
|
|
Uses the CMU Pronouncing Dictionary (via ``pronouncing``) to detect
|
|
perfect rhymes, internal rhymes, and slant (vowel) rhymes — no
|
|
spelling heuristics.
|
|
|
|
Run it: uv run uvicorn app:app --reload
|
|
"""
|
|
|
|
import re
|
|
from collections import defaultdict
|
|
from contextlib import asynccontextmanager
|
|
from functools import lru_cache
|
|
from pathlib import Path
|
|
|
|
import pronouncing
|
|
from fastapi import FastAPI
|
|
from fastapi.staticfiles import StaticFiles
|
|
from pydantic import BaseModel
|
|
from wordfreq import zipf_frequency
|
|
|
|
|
|
@asynccontextmanager
|
|
async def lifespan(app: FastAPI):
|
|
# warm the slow lazy bits at boot, not on the first keystroke
|
|
try:
|
|
g2p_phones("warmup")
|
|
except Exception:
|
|
pass # model unavailable; spelling fallbacks still work
|
|
get_slant_index()
|
|
yield
|
|
|
|
|
|
app = FastAPI(title="RhymePad", lifespan=lifespan)
|
|
|
|
_g2p = None
|
|
|
|
|
|
def g2p_phones(word: str) -> str | None:
|
|
"""Neural grapheme-to-phoneme fallback for words the CMU dict and our
|
|
heuristics can't resolve — pronounces anything (lazily loaded)."""
|
|
global _g2p
|
|
if _g2p is None:
|
|
from g2p_en import G2p
|
|
_g2p = G2p()
|
|
phones = [p for p in _g2p(word) if re.fullmatch(r"[A-Z]+[012]?", p)]
|
|
return " ".join(phones) or None
|
|
|
|
WORD_RE = re.compile(r"[A-Za-z][A-Za-z']*")
|
|
DIGITS = re.compile(r"\d")
|
|
COLORS = 12 # matches --r0..--r11 in the stylesheet
|
|
|
|
#: function words too common to flag as internal rhymes
|
|
#: (they still count when they end a line)
|
|
STOPWORDS = frozenset(
|
|
"""i a an the and or but as at of in on is it its was were are am be been
|
|
do does did to too so no not nor that this these those with for from has
|
|
had have what when then than there here you your we he she they them his
|
|
her our us if by my em im 's t s d ll re ve
|
|
i'm i'll i'd i've it's that's you're we're they're he's she's
|
|
just like gonna wanna cause don't won't ain't yeah even me""".split()
|
|
)
|
|
|
|
|
|
# --------------------------------------------------------------------------
|
|
# pronunciation
|
|
# --------------------------------------------------------------------------
|
|
|
|
@lru_cache(maxsize=None)
|
|
def phones_candidates(word: str) -> tuple[str, ...]:
|
|
"""Plausible pronunciations for a word: CMU dict variants, a few
|
|
lyric-friendly repairs (droppin' the g, possessives, wheee, whisps),
|
|
and for unknown words BOTH the g2p model's guess and a compound
|
|
split (heresay = here + say) — we can't know which the writer means,
|
|
so the rhyme passes get to match on any of them."""
|
|
w = word.lower().strip("'")
|
|
cands = list(pronouncing.phones_for_word(w)[:3])
|
|
if not cands and w.endswith("in"): # runnin' -> running
|
|
cands = pronouncing.phones_for_word(w + "g")[:1]
|
|
if not cands and w.endswith("'s"):
|
|
base = pronouncing.phones_for_word(w[:-2])
|
|
if base:
|
|
cands = [base[0] + " Z"]
|
|
if not cands and re.search(r"(.)\1\1", w): # wheee -> whee
|
|
for collapsed in (re.sub(r"(.)\1{2,}", r"\1\1", w),
|
|
re.sub(r"(.)\1{2,}", r"\1", w)):
|
|
opts = pronouncing.phones_for_word(collapsed)
|
|
if opts:
|
|
cands = opts[:1]
|
|
break
|
|
if not cands and w.startswith("wh"): # whisps -> wisps
|
|
cands = pronouncing.phones_for_word("w" + w[2:])[:1]
|
|
if not cands and w.endswith("s") and len(w) > 3:
|
|
base = pronouncing.phones_for_word(w[:-1]) # plural of an OOV stem
|
|
if base:
|
|
voiced = base[0].split()[-1] not in {"P", "T", "K", "F", "TH"}
|
|
cands = [base[0] + (" Z" if voiced else " S")]
|
|
if not cands:
|
|
if re.fullmatch(r"[a-z']+", w):
|
|
try:
|
|
g = g2p_phones(w)
|
|
if g:
|
|
cands.append(g)
|
|
except Exception:
|
|
pass # g2p model unavailable
|
|
if len(w) >= 6:
|
|
# creative compounds & misspellings: heresay -> here + say
|
|
for i in range(3, len(w) - 2):
|
|
a = pronouncing.phones_for_word(w[:i])
|
|
b = pronouncing.phones_for_word(w[i:])
|
|
if a and b:
|
|
cands.append(a[0] + " " + b[0])
|
|
break
|
|
return tuple(dict.fromkeys(cands))
|
|
|
|
|
|
def phones_for(word: str) -> str | None:
|
|
"""Primary pronunciation (used for slant/consonance keys)."""
|
|
cands = phones_candidates(word)
|
|
return cands[0] if cands else None
|
|
|
|
|
|
def _rime_from_phones(phones: str) -> str:
|
|
"""Everything from the last stressed vowel on, stress markers stripped.
|
|
This is the classic 'perfect rhyme' key: light/night/tonight all share AY T."""
|
|
return DIGITS.sub("", pronouncing.rhyming_part(phones))
|
|
|
|
|
|
def _tail_vowels(phones: str) -> list[str]:
|
|
"""Vowel sounds from the last stressed vowel on, stress-stripped."""
|
|
pl = phones.split()
|
|
start = 0
|
|
for i in range(len(pl) - 1, -1, -1):
|
|
if pl[i][-1] in "12":
|
|
start = i
|
|
break
|
|
return [DIGITS.sub("", p) for p in pl[start:] if p[-1].isdigit()]
|
|
|
|
|
|
def _all_vowels(phones: str) -> list[str]:
|
|
return [DIGITS.sub("", p) for p in phones.split() if p[-1].isdigit()]
|
|
|
|
|
|
def _slant_from_phones(phones: str) -> str | None:
|
|
"""Just the vowel sounds from the last stressed vowel on — the assonance
|
|
key used for slant rhymes (time/light, hold/coal)."""
|
|
return " ".join(_tail_vowels(phones)) or None
|
|
|
|
|
|
#: the schwa family — reduced vowels rappers treat as interchangeable
|
|
#: (orange = AO R *AH* N JH, door hinge = AO R HH *IH* N JH)
|
|
REDUCED = {"AH", "IH", "UH", "ER"}
|
|
|
|
ARPA_VOWELS = {"AA", "AE", "AH", "AO", "AW", "AY", "EH", "ER", "EY",
|
|
"IH", "IY", "OW", "OY", "UH", "UW"}
|
|
|
|
|
|
def founding_projections(key: str) -> dict[str, str]:
|
|
"""Project a group's FOUNDING key (the sound that formed it) into the
|
|
weaker key spaces, so later passes only attach members that match the
|
|
sound the group is actually about — never some member's other
|
|
pronunciation (that's how what's/peanuts once swallowed sleep/people)."""
|
|
out = {}
|
|
if key.startswith("p:"): # perfect rime, e.g. "AH T S"
|
|
ph = key[2:].split()
|
|
vowels = [p for p in ph if p in ARPA_VOWELS]
|
|
if vowels:
|
|
out["slant"] = "v:" + " ".join(vowels)
|
|
if len(ph) > 1 and ph[1] not in ARPA_VOWELS:
|
|
out["vc"] = "c:" + ph[0] + " " + ph[1]
|
|
else:
|
|
out["vc"] = "c:" + ph[0]
|
|
mk = _multi_key(vowels)
|
|
if mk:
|
|
out["multi"] = mk
|
|
elif key.startswith("v:"): # vowel tail
|
|
out["slant"] = key
|
|
mk = _multi_key(key[2:].split())
|
|
if mk:
|
|
out["multi"] = mk
|
|
elif key.startswith("m:"):
|
|
out["multi"] = key
|
|
elif key.startswith("c:"):
|
|
out["vc"] = key
|
|
return out
|
|
|
|
|
|
def _multi_key(vowels: list[str]) -> str | None:
|
|
"""Key for multisyllabic slant rhymes: a 2+ vowel run where the first
|
|
vowel must match exactly and later reduced vowels are merged. Trailing
|
|
schwas are trimmed so militia (IH-AH) still catches commissioner
|
|
(IH-AH-ER) — the tail falls off the beat."""
|
|
if len(vowels) < 2:
|
|
return None
|
|
parts = [vowels[0]] + ["x" if v in REDUCED else v for v in vowels[1:]]
|
|
while len(parts) > 2 and parts[-1] == "x":
|
|
parts.pop()
|
|
return "m:" + " ".join(parts)
|
|
|
|
|
|
def _grapheme_tail(raw: str) -> str | None:
|
|
"""Spelling-based fallback key for words the CMU dict doesn't know,
|
|
so made-up words can still rhyme with each other."""
|
|
w = re.sub(r"[^a-z']", "", raw.lower())
|
|
if not w:
|
|
return None
|
|
for pat, rep in (
|
|
(r"ies$", "ee"), (r"ied$", "ide"), (r"igh", "i"),
|
|
(r"[ts]ion$", "shun"), (r"ph", "f"), (r"ck", "k"), (r"qu", "kw"),
|
|
):
|
|
w = re.sub(pat, rep, w)
|
|
if re.search(r"[^aeiou]e$", w) and len(w) > 2:
|
|
w = w[:-1]
|
|
m = re.search(r"([aeiouy]+[^aeiouy]*)$", w)
|
|
tail = m.group(1) if m else w
|
|
tail = re.sub(r"(.)\1+", r"\1", tail)
|
|
for pat, rep in (
|
|
(r"^[ae]y", "ai"), (r"^ei", "ai"), (r"^oa", "o"), (r"^ow$", "o"),
|
|
(r"^oe", "o"), (r"^ea", "ee"), (r"^ie", "ee"), (r"^oo", "u"),
|
|
(r"^ou", "ow"), (r"^ew", "u"),
|
|
):
|
|
tail = re.sub(pat, rep, tail)
|
|
return tail
|
|
|
|
|
|
def rime_keys(word: str) -> tuple[str, ...]:
|
|
"""Perfect-rhyme keys, one per candidate pronunciation."""
|
|
cands = phones_candidates(word)
|
|
if cands:
|
|
return tuple(dict.fromkeys("p:" + _rime_from_phones(p) for p in cands))
|
|
tail = _grapheme_tail(word)
|
|
return ("g:" + tail,) if tail else ()
|
|
|
|
|
|
def vc_key(word: str) -> str | None:
|
|
"""Last stressed vowel + first coda consonant — a consonance-aware
|
|
slant key, so bliss / whisps / exist all share IH S."""
|
|
phones = phones_for(word)
|
|
if not phones:
|
|
return None
|
|
pl = phones.split()
|
|
start = 0
|
|
for i in range(len(pl) - 1, -1, -1):
|
|
if pl[i][-1] in "12":
|
|
start = i
|
|
break
|
|
tail = pl[start:]
|
|
if not tail or not tail[0][-1].isdigit():
|
|
return None
|
|
key = DIGITS.sub("", tail[0])
|
|
if len(tail) > 1:
|
|
key += " " + tail[1]
|
|
return "c:" + key
|
|
|
|
|
|
def slant_key(word: str) -> str | None:
|
|
phones = phones_for(word)
|
|
if phones:
|
|
v = _slant_from_phones(phones)
|
|
return ("v:" + v) if v else None
|
|
tail = _grapheme_tail(word)
|
|
if not tail:
|
|
return None
|
|
m = re.match(r"[aeiouy]+", tail)
|
|
return "gv:" + (m.group(0) if m else tail)
|
|
|
|
|
|
# --------------------------------------------------------------------------
|
|
# meter
|
|
# --------------------------------------------------------------------------
|
|
|
|
FEET = {
|
|
"iambic": "01", "trochaic": "10", "anapestic": "001",
|
|
"dactylic": "100", "amphibrachic": "010",
|
|
}
|
|
METER_NAMES = {1: "monometer", 2: "dimeter", 3: "trimeter", 4: "tetrameter",
|
|
5: "pentameter", 6: "hexameter", 7: "heptameter", 8: "octameter"}
|
|
|
|
|
|
def line_meter(line: str) -> dict | None:
|
|
"""Syllable count and best-fit metrical foot for a line.
|
|
|
|
Stress comes from the CMU markers (1/2 stressed, 0 unstressed).
|
|
Monosyllables flex in real speech, so function words read as
|
|
unstressed and content monosyllables as wildcards.
|
|
"""
|
|
stress = ""
|
|
for w in WORD_RE.findall(line):
|
|
ph = phones_for(w)
|
|
if not ph:
|
|
stress += "x" # unknown word: one flexible syllable, at least
|
|
continue
|
|
syls = [p[-1] for p in ph.split() if p[-1].isdigit()]
|
|
if len(syls) == 1:
|
|
stress += "0" if w.lower() in STOPWORDS else "x"
|
|
else:
|
|
stress += "".join("1" if s in "12" else "0" for s in syls)
|
|
n = len(stress)
|
|
if n == 0:
|
|
return None
|
|
best_label, best_score = None, 0.0
|
|
if n >= 4: # too short to call a meter
|
|
for name, foot in FEET.items():
|
|
pat = (foot * (n // len(foot) + 1))[:n] # final foot may truncate
|
|
score = sum(a == "x" or a == b for a, b in zip(stress, pat)) / n
|
|
if score > best_score:
|
|
feet_count = round(n / len(foot))
|
|
meter = METER_NAMES.get(feet_count, f"{feet_count}-foot")
|
|
best_label, best_score = f"{name} {meter}", score
|
|
return {
|
|
"syl": n,
|
|
"stress": stress,
|
|
"label": best_label if best_score >= 0.75 else None,
|
|
"score": round(best_score, 2),
|
|
}
|
|
|
|
|
|
# --------------------------------------------------------------------------
|
|
# analysis
|
|
# --------------------------------------------------------------------------
|
|
|
|
class Draft(BaseModel):
|
|
text: str
|
|
|
|
|
|
@app.post("/api/analyze")
|
|
def analyze(draft: Draft):
|
|
lines = draft.text.split("\n")
|
|
|
|
# stanza ids (blank-line separated)
|
|
sids: list[int | None] = []
|
|
sid, prev_blank = -1, True
|
|
for line in lines:
|
|
stripped = line.strip()
|
|
if not stripped:
|
|
sids.append(None)
|
|
prev_blank = True
|
|
continue
|
|
if stripped[0] in "#([":
|
|
# annotation line ([Chorus], (yeah), # notes) — no highlighting,
|
|
# no scheme letter, and it doesn't split the stanza either
|
|
sids.append(None)
|
|
continue
|
|
if prev_blank:
|
|
sid += 1
|
|
prev_blank = False
|
|
sids.append(sid)
|
|
|
|
tokens = []
|
|
for i, line in enumerate(lines):
|
|
if sids[i] is None:
|
|
continue
|
|
matches = list(WORD_RE.finditer(line))
|
|
for j, m in enumerate(matches):
|
|
tokens.append({
|
|
"line": i, "start": m.start(), "end": m.end(),
|
|
"word": m.group(0), "is_end": j == len(matches) - 1,
|
|
"sid": sids[i], "gid": None, "slant": False,
|
|
})
|
|
|
|
# phrase tokens: adjacent word pairs, so multi-word rhymes can match
|
|
# single words (orange / door hinge). Anchored at the first word's
|
|
# stressed vowel; competes in the multisyllabic slant pass only.
|
|
phrases = []
|
|
line_toks = defaultdict(list)
|
|
for t in tokens:
|
|
line_toks[t["line"]].append(t)
|
|
for toks in line_toks.values():
|
|
for a, b in zip(toks, toks[1:]):
|
|
pa, pb = phones_for(a["word"]), phones_for(b["word"])
|
|
if not (pa and pb):
|
|
continue
|
|
# the phrase's rime runs from the anchor's stressed vowel
|
|
# through the end of the tail: "stir up" = ER AH P, which is
|
|
# a PERFECT rhyme with syrup
|
|
pl = pa.split()
|
|
start = 0
|
|
for i in range(len(pl) - 1, -1, -1):
|
|
if pl[i][-1] in "12":
|
|
start = i
|
|
break
|
|
phrases.append({
|
|
"line": a["line"], "start": a["start"], "end": b["end"],
|
|
"word": a["word"].lower() + " " + b["word"].lower(),
|
|
"is_end": b["is_end"], "sid": a["sid"], "gid": None,
|
|
"slant": False, "vowels": _tail_vowels(pa) + _all_vowels(pb),
|
|
"rime": DIGITS.sub("", " ".join(pl[start:] + pb.split())),
|
|
# a phrase touching a stopword ("were up") may still match
|
|
# perfectly, but never competes in the vowel-only passes
|
|
"weak": (a["word"].lower() in STOPWORDS
|
|
or b["word"].lower() in STOPWORDS),
|
|
})
|
|
|
|
# pass 1: perfect rhymes (shared rime), anywhere in a line — this is
|
|
# what catches internal rhymes. Phrases compete too, so "stir up"
|
|
# perfect-rhymes "syrup" even while its "up" rhymes with "cup".
|
|
by_rime = defaultdict(list)
|
|
for t in tokens:
|
|
w = t["word"].lower()
|
|
if not t["is_end"] and (w in STOPWORDS or len(w) < 2):
|
|
continue
|
|
for key in rime_keys(t["word"]):
|
|
by_rime[key].append(t)
|
|
for p in phrases:
|
|
# "bought it" competes; "to me" / "but I" never found anything
|
|
if p["word"].split()[0] not in STOPWORDS:
|
|
by_rime["p:" + p["rime"]].append(p)
|
|
|
|
# biggest buckets claim their tokens first, so a word with several
|
|
# candidate pronunciations joins its best-supported rhyme group.
|
|
# Each group remembers its founding key — the sound it's about.
|
|
raw_groups: list[dict] = []
|
|
claimed: set[int] = set()
|
|
for key, toks in sorted(by_rime.items(), key=lambda kv: (-len(kv[1]), kv[0])):
|
|
toks = [t for t in toks if id(t) not in claimed]
|
|
if len(toks) < 2:
|
|
continue
|
|
# distinctness by anchor word, so "fire burns" can't pose as a
|
|
# rhyme partner for the "fire" it starts with
|
|
distinct = {t["word"].split()[0].lower() for t in toks}
|
|
end_count = sum(t["is_end"] for t in toks)
|
|
if len(distinct) < 2 and end_count < 2:
|
|
continue # the same word repeated mid-line isn't a rhyme
|
|
raw_groups.append({"toks": toks, "slant": False, "key": key})
|
|
claimed.update(id(t) for t in toks)
|
|
|
|
grouped = {id(t) for g in raw_groups for t in g["toks"]}
|
|
|
|
def gmap_for(kind: str) -> dict[tuple, int]:
|
|
"""(sid, projected founding key) -> group index, for attaching."""
|
|
out: dict[tuple, int] = {}
|
|
for gi, g in enumerate(raw_groups):
|
|
k = founding_projections(g["key"]).get(kind)
|
|
if k:
|
|
for s in {t["sid"] for t in g["toks"]}:
|
|
out.setdefault((s, k), gi)
|
|
return out
|
|
|
|
def attach_or_collect(t, key, bucket, gmap):
|
|
gi = gmap.get((t["sid"], key))
|
|
if gi is not None:
|
|
raw_groups[gi]["toks"].append(t)
|
|
t["slant"] = True
|
|
grouped.add(id(t))
|
|
else:
|
|
bucket[(t["sid"], key)].append(t)
|
|
|
|
# pass 2: slant rhymes for still-unmatched line endings, per stanza.
|
|
# A leftover ending first tries to JOIN an existing group whose
|
|
# founding sound shares its vowel tail (time -> the mind/find group);
|
|
# otherwise leftovers form a new slant group among themselves.
|
|
group_by_slant = gmap_for("slant")
|
|
by_slant = defaultdict(list)
|
|
for t in tokens:
|
|
if t["is_end"] and id(t) not in grouped:
|
|
key = slant_key(t["word"])
|
|
if key:
|
|
attach_or_collect(t, key, by_slant, group_by_slant)
|
|
for (sid, key), toks in by_slant.items():
|
|
if len(toks) >= 2 and len({t["word"].lower() for t in toks}) >= 2:
|
|
raw_groups.append({"toks": toks, "slant": True, "key": key})
|
|
grouped.update(id(t) for t in toks)
|
|
|
|
# pass 3: multisyllabic slant rhymes anywhere in a line, per stanza —
|
|
# tokens sharing a 2+ vowel run from the stressed syllable on
|
|
# (placement / creation both carry EY AH; orange / door hinge both
|
|
# carry AO + schwa). Single-vowel assonance is too noisy to flag
|
|
# mid-line, so it stays end-of-line only (pass 2).
|
|
group_by_multi = gmap_for("multi")
|
|
by_multi = defaultdict(list)
|
|
for t in tokens:
|
|
if id(t) in grouped:
|
|
continue
|
|
w = t["word"].lower()
|
|
if not t["is_end"] and (w in STOPWORDS or len(w) < 2):
|
|
continue
|
|
ph = phones_for(t["word"])
|
|
key = _multi_key(_tail_vowels(ph)) if ph else None
|
|
if key:
|
|
attach_or_collect(t, key, by_multi, group_by_multi)
|
|
|
|
# a phrase only competes when no word inside it already rhymes
|
|
grouped_spans = defaultdict(list)
|
|
for t in tokens:
|
|
if id(t) in grouped:
|
|
grouped_spans[t["line"]].append((t["start"], t["end"]))
|
|
for p in phrases:
|
|
if p["weak"]:
|
|
continue
|
|
if any(s < p["end"] and p["start"] < e
|
|
for s, e in grouped_spans[p["line"]]):
|
|
continue
|
|
key = _multi_key(p["vowels"])
|
|
if key:
|
|
attach_or_collect(p, key, by_multi, group_by_multi)
|
|
|
|
# distinctness by anchor word, so the phrase "fire burns" can't pose
|
|
# as a different word than the "fire" it starts with
|
|
for (sid, key), toks in by_multi.items():
|
|
if len(toks) >= 2 and len({t["word"].split()[0] for t in toks}) >= 2:
|
|
raw_groups.append({"toks": toks, "slant": True, "key": key})
|
|
grouped.update(id(t) for t in toks)
|
|
|
|
# pass 4: consonance-aware slant anywhere in a line — last stressed
|
|
# vowel + first coda consonant, so bliss / whisps / exist (IH S) group
|
|
# even though their full codas differ
|
|
group_by_vc = gmap_for("vc")
|
|
# a word inside an already-grouped phrase sits this pass out,
|
|
# so "door" doesn't fight "door hinge" for the highlight
|
|
phrase_spans = defaultdict(list)
|
|
for p in phrases:
|
|
if id(p) in grouped:
|
|
phrase_spans[p["line"]].append((p["start"], p["end"]))
|
|
by_vc = defaultdict(list)
|
|
for t in tokens:
|
|
if id(t) in grouped:
|
|
continue
|
|
if any(s < t["end"] and t["start"] < e
|
|
for s, e in phrase_spans[t["line"]]):
|
|
continue
|
|
w = t["word"].lower()
|
|
if not t["is_end"] and (w in STOPWORDS or len(w) < 2):
|
|
continue
|
|
key = vc_key(t["word"])
|
|
if key:
|
|
attach_or_collect(t, key, by_vc, group_by_vc)
|
|
for (sid, key), toks in by_vc.items():
|
|
if len(toks) >= 2 and len({t["word"].lower() for t in toks}) >= 2:
|
|
raw_groups.append({"toks": toks, "slant": True, "key": key})
|
|
grouped.update(id(t) for t in toks)
|
|
|
|
# stopword-anchored phrases ("were up") never compete on their own,
|
|
# but an exact rime match against any grouped token lets them ride
|
|
# along — perfect phone identity carries no transitive-key risk
|
|
rime_map: dict[tuple, int] = {}
|
|
for gi, g in enumerate(raw_groups):
|
|
for t in g["toks"]:
|
|
keys = ("p:" + t["rime"],) if "rime" in t else rime_keys(t["word"])
|
|
for k in keys:
|
|
if k.startswith("p:"):
|
|
rime_map.setdefault((t["sid"], k), gi)
|
|
for p in phrases:
|
|
if id(p) in grouped or p["word"].split()[0] not in STOPWORDS:
|
|
continue
|
|
gi = rime_map.get((p["sid"], "p:" + p["rime"]))
|
|
if gi is not None:
|
|
raw_groups[gi]["toks"].append(p)
|
|
grouped.add(id(p))
|
|
|
|
# stable colors: order groups by first appearance
|
|
raw_groups.sort(key=lambda g: min((t["line"], t["start"]) for t in g["toks"]))
|
|
groups_out = []
|
|
for gid, g in enumerate(raw_groups):
|
|
for t in g["toks"]:
|
|
t["gid"] = gid
|
|
groups_out.append({"id": gid, "color": gid % COLORS, "slant": g["slant"]})
|
|
|
|
# stanza rhyme schemes from line-ending groups
|
|
# (a grouped end word wins over a grouped end phrase)
|
|
end_gid: dict[int, int] = {}
|
|
for t in [*tokens, *phrases]:
|
|
if t["is_end"] and t["gid"] is not None:
|
|
end_gid.setdefault(t["line"], t["gid"])
|
|
stanza_lines = defaultdict(list)
|
|
for i, s in enumerate(sids):
|
|
if s is not None:
|
|
stanza_lines[s].append(i)
|
|
|
|
stanzas = []
|
|
for s in sorted(stanza_lines):
|
|
letters, order = [], {}
|
|
for i in stanza_lines[s]:
|
|
gid = end_gid.get(i)
|
|
key = gid if gid is not None else f"solo:{i}"
|
|
if key not in order:
|
|
order[key] = len(order)
|
|
letters.append(order[key])
|
|
legend, seen = [], set()
|
|
for pos, i in enumerate(stanza_lines[s]):
|
|
n = letters[pos]
|
|
if n in seen:
|
|
continue
|
|
seen.add(n)
|
|
gid = end_gid.get(i)
|
|
legend.append({
|
|
"ch": chr(97 + n % 26),
|
|
"color": (gid % COLORS) if gid is not None else None,
|
|
"slant": groups_out[gid]["slant"] if gid is not None else False,
|
|
})
|
|
stanzas.append({
|
|
"lines": stanza_lines[s],
|
|
"scheme": "".join(chr(97 + n % 26) for n in letters),
|
|
"legend": legend,
|
|
})
|
|
|
|
toks_out = [
|
|
{"l": t["line"], "s": t["start"], "e": t["end"], "g": t["gid"],
|
|
"end": t["is_end"], "ph": "vowels" in t,
|
|
"slant": t["slant"] or groups_out[t["gid"]]["slant"]}
|
|
for t in [*tokens, *phrases] if t["gid"] is not None
|
|
]
|
|
meter, meter_by_line = [], {}
|
|
for i, line in enumerate(lines):
|
|
if sids[i] is None:
|
|
continue
|
|
m = line_meter(line)
|
|
if m:
|
|
entry = {"l": i, **m, "off": False}
|
|
meter.append(entry)
|
|
meter_by_line[i] = entry
|
|
|
|
# meter coaching: when a stanza has a clear syllable pattern, flag
|
|
# the lines that break it
|
|
for s, lns in stanza_lines.items():
|
|
entries = [meter_by_line[i] for i in lns if i in meter_by_line]
|
|
if len(entries) < 3:
|
|
continue
|
|
counts = [e["syl"] for e in entries]
|
|
# mode with +-1 tolerance: the count that covers the most lines
|
|
mode = max(set(counts), key=lambda c: sum(abs(v - c) <= 1 for v in counts))
|
|
covered = sum(abs(v - mode) <= 1 for v in counts)
|
|
if covered / len(entries) >= 0.6:
|
|
for e in entries:
|
|
e["off"] = abs(e["syl"] - mode) > 1
|
|
for e in entries:
|
|
e["target"] = mode
|
|
|
|
return {"lines": lines, "tokens": toks_out,
|
|
"groups": groups_out, "stanzas": stanzas, "meter": meter}
|
|
|
|
|
|
# --------------------------------------------------------------------------
|
|
# rhyme / near-rhyme lookup
|
|
# --------------------------------------------------------------------------
|
|
|
|
_slant_index: dict[str, set[str]] | None = None
|
|
|
|
|
|
def get_slant_index() -> dict[str, set[str]]:
|
|
"""vowel-tail -> words, over the whole CMU dict (built once, lazily)."""
|
|
global _slant_index
|
|
if _slant_index is None:
|
|
pronouncing.init_cmu()
|
|
idx: dict[str, set[str]] = defaultdict(set)
|
|
for w, phones in pronouncing.pronunciations:
|
|
k = _slant_from_phones(phones)
|
|
if k:
|
|
idx[k].add(w)
|
|
_slant_index = idx
|
|
return _slant_index
|
|
|
|
|
|
def _ranked(words, exclude: set[str], limit: int) -> list[dict]:
|
|
scored = []
|
|
for w in set(words):
|
|
if w in exclude or not w.isalpha():
|
|
continue
|
|
z = zipf_frequency(w, "en")
|
|
if z < 1.8: # drop cmudict junk and very rare proper nouns
|
|
continue
|
|
scored.append((z, w))
|
|
scored.sort(key=lambda t: (-t[0], t[1]))
|
|
out = []
|
|
for z, w in scored[:limit]:
|
|
ph = phones_for(w)
|
|
out.append({"word": w, "syl": pronouncing.syllable_count(ph) if ph else 0})
|
|
return out
|
|
|
|
|
|
@app.get("/api/lookup")
|
|
def lookup(word: str, mode: str = "rhyme", limit: int = 60):
|
|
w = word.strip().lower()
|
|
phones = phones_for(w)
|
|
if not phones:
|
|
return {"word": w, "mode": mode, "known": False, "words": []}
|
|
if mode == "near":
|
|
k = _slant_from_phones(phones)
|
|
perfect = set(pronouncing.rhymes(w))
|
|
cands = (get_slant_index().get(k, set()) - perfect) if k else set()
|
|
words = _ranked(cands, {w}, limit)
|
|
else:
|
|
words = _ranked(pronouncing.rhymes(w), {w}, limit)
|
|
return {"word": w, "mode": mode, "known": True, "words": words}
|
|
|
|
|
|
app.mount("/", StaticFiles(directory=Path(__file__).parent / "static",
|
|
html=True), name="static")
|