Mercurial > hg
view mercurial/cext/charencode.c @ 39899:f9232b0310ef
pullreport: issue a message about "extinct" pulled changesets
Changeset pulled from a remote repository while already obsolete locally can
end up hidden after the pull. Hiding obsolete changesets is a good behavior
but silently "skipping" some of the pulled content can get confusing.
We now detect this situation and emit a message about it. The message is
simple and the wording could be improved, however, we focus on the detection
here. Evolution is still an experimental feature, so the output is open to
changes.
In particular, we could point out at the latest successors of the obsolete
changesets, however, it can get tricky is there are many of them. So we delay
these improvements to another adventure.
Another easy improvement would be to merge this message with the previous line
about the new nodes and their phases.
This is a good example of cases where we can only transmit a limited amount of
data to users by default. We need some sort of "transaction journal" we could
point the user to.
author | Boris Feld <boris.feld@octobus.net> |
---|---|
date | Thu, 27 Sep 2018 16:52:25 +0200 |
parents | 186c6df3a373 |
children | 763b45bc4483 |
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/* charencode.c - miscellaneous character encoding Copyright 2008 Matt Mackall <mpm@selenic.com> and others This software may be used and distributed according to the terms of the GNU General Public License, incorporated herein by reference. */ #define PY_SSIZE_T_CLEAN #include <Python.h> #include <assert.h> #include "charencode.h" #include "compat.h" #include "util.h" #ifdef IS_PY3K /* The mapping of Python types is meant to be temporary to get Python * 3 to compile. We should remove this once Python 3 support is fully * supported and proper types are used in the extensions themselves. */ #define PyInt_Type PyLong_Type #define PyInt_AS_LONG PyLong_AS_LONG #endif /* clang-format off */ static const char lowertable[128] = { '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07', '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f', '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17', '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f', '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27', '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f', '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37', '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f', '\x40', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67', /* A-G */ '\x68', '\x69', '\x6a', '\x6b', '\x6c', '\x6d', '\x6e', '\x6f', /* H-O */ '\x70', '\x71', '\x72', '\x73', '\x74', '\x75', '\x76', '\x77', /* P-W */ '\x78', '\x79', '\x7a', /* X-Z */ '\x5b', '\x5c', '\x5d', '\x5e', '\x5f', '\x60', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67', '\x68', '\x69', '\x6a', '\x6b', '\x6c', '\x6d', '\x6e', '\x6f', '\x70', '\x71', '\x72', '\x73', '\x74', '\x75', '\x76', '\x77', '\x78', '\x79', '\x7a', '\x7b', '\x7c', '\x7d', '\x7e', '\x7f' }; static const char uppertable[128] = { '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07', '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f', '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17', '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f', '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27', '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f', '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37', '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f', '\x40', '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47', '\x48', '\x49', '\x4a', '\x4b', '\x4c', '\x4d', '\x4e', '\x4f', '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57', '\x58', '\x59', '\x5a', '\x5b', '\x5c', '\x5d', '\x5e', '\x5f', '\x60', '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47', /* a-g */ '\x48', '\x49', '\x4a', '\x4b', '\x4c', '\x4d', '\x4e', '\x4f', /* h-o */ '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57', /* p-w */ '\x58', '\x59', '\x5a', /* x-z */ '\x7b', '\x7c', '\x7d', '\x7e', '\x7f' }; /* 1: no escape, 2: \<c>, 6: \u<x> */ static const uint8_t jsonlentable[256] = { 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 6, 2, 2, 6, 6, /* b, t, n, f, r */ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* " */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, /* \\ */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, /* DEL */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, }; static const uint8_t jsonparanoidlentable[128] = { 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 6, 2, 2, 6, 6, /* b, t, n, f, r */ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* " */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 1, 6, 1, /* <, > */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, /* \\ */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, /* DEL */ }; static const char hexchartable[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', }; /* clang-format on */ /* * Turn a hex-encoded string into binary. */ PyObject *unhexlify(const char *str, Py_ssize_t len) { PyObject *ret; char *d; Py_ssize_t i; ret = PyBytes_FromStringAndSize(NULL, len / 2); if (!ret) return NULL; d = PyBytes_AsString(ret); for (i = 0; i < len;) { int hi = hexdigit(str, i++); int lo = hexdigit(str, i++); *d++ = (hi << 4) | lo; } return ret; } PyObject *isasciistr(PyObject *self, PyObject *args) { const char *buf; Py_ssize_t i, len; if (!PyArg_ParseTuple(args, PY23("s#:isasciistr", "y#:isasciistr"), &buf, &len)) return NULL; i = 0; /* char array in PyStringObject should be at least 4-byte aligned */ if (((uintptr_t)buf & 3) == 0) { const uint32_t *p = (const uint32_t *)buf; for (; i < len / 4; i++) { if (p[i] & 0x80808080U) Py_RETURN_FALSE; } i *= 4; } for (; i < len; i++) { if (buf[i] & 0x80) Py_RETURN_FALSE; } Py_RETURN_TRUE; } static inline PyObject * _asciitransform(PyObject *str_obj, const char table[128], PyObject *fallback_fn) { char *str, *newstr; Py_ssize_t i, len; PyObject *newobj = NULL; PyObject *ret = NULL; str = PyBytes_AS_STRING(str_obj); len = PyBytes_GET_SIZE(str_obj); newobj = PyBytes_FromStringAndSize(NULL, len); if (!newobj) goto quit; newstr = PyBytes_AS_STRING(newobj); for (i = 0; i < len; i++) { char c = str[i]; if (c & 0x80) { if (fallback_fn != NULL) { ret = PyObject_CallFunctionObjArgs( fallback_fn, str_obj, NULL); } else { PyObject *err = PyUnicodeDecodeError_Create( "ascii", str, len, i, (i + 1), "unexpected code byte"); PyErr_SetObject(PyExc_UnicodeDecodeError, err); Py_XDECREF(err); } goto quit; } newstr[i] = table[(unsigned char)c]; } ret = newobj; Py_INCREF(ret); quit: Py_XDECREF(newobj); return ret; } PyObject *asciilower(PyObject *self, PyObject *args) { PyObject *str_obj; if (!PyArg_ParseTuple(args, "O!:asciilower", &PyBytes_Type, &str_obj)) return NULL; return _asciitransform(str_obj, lowertable, NULL); } PyObject *asciiupper(PyObject *self, PyObject *args) { PyObject *str_obj; if (!PyArg_ParseTuple(args, "O!:asciiupper", &PyBytes_Type, &str_obj)) return NULL; return _asciitransform(str_obj, uppertable, NULL); } PyObject *make_file_foldmap(PyObject *self, PyObject *args) { PyObject *dmap, *spec_obj, *normcase_fallback; PyObject *file_foldmap = NULL; enum normcase_spec spec; PyObject *k, *v; dirstateTupleObject *tuple; Py_ssize_t pos = 0; const char *table; if (!PyArg_ParseTuple(args, "O!O!O!:make_file_foldmap", &PyDict_Type, &dmap, &PyInt_Type, &spec_obj, &PyFunction_Type, &normcase_fallback)) goto quit; spec = (int)PyInt_AS_LONG(spec_obj); switch (spec) { case NORMCASE_LOWER: table = lowertable; break; case NORMCASE_UPPER: table = uppertable; break; case NORMCASE_OTHER: table = NULL; break; default: PyErr_SetString(PyExc_TypeError, "invalid normcasespec"); goto quit; } /* Add some more entries to deal with additions outside this function. */ file_foldmap = _dict_new_presized((PyDict_Size(dmap) / 10) * 11); if (file_foldmap == NULL) goto quit; while (PyDict_Next(dmap, &pos, &k, &v)) { if (!dirstate_tuple_check(v)) { PyErr_SetString(PyExc_TypeError, "expected a dirstate tuple"); goto quit; } tuple = (dirstateTupleObject *)v; if (tuple->state != 'r') { PyObject *normed; if (table != NULL) { normed = _asciitransform(k, table, normcase_fallback); } else { normed = PyObject_CallFunctionObjArgs( normcase_fallback, k, NULL); } if (normed == NULL) goto quit; if (PyDict_SetItem(file_foldmap, normed, k) == -1) { Py_DECREF(normed); goto quit; } Py_DECREF(normed); } } return file_foldmap; quit: Py_XDECREF(file_foldmap); return NULL; } /* calculate length of JSON-escaped string; returns -1 if unsupported */ static Py_ssize_t jsonescapelen(const char *buf, Py_ssize_t len, bool paranoid) { Py_ssize_t i, esclen = 0; if (paranoid) { /* don't want to process multi-byte escapes in C */ for (i = 0; i < len; i++) { char c = buf[i]; if (c & 0x80) { PyErr_SetString(PyExc_ValueError, "cannot process non-ascii str"); return -1; } esclen += jsonparanoidlentable[(unsigned char)c]; if (esclen < 0) { PyErr_SetString(PyExc_MemoryError, "overflow in jsonescapelen"); return -1; } } } else { for (i = 0; i < len; i++) { char c = buf[i]; esclen += jsonlentable[(unsigned char)c]; if (esclen < 0) { PyErr_SetString(PyExc_MemoryError, "overflow in jsonescapelen"); return -1; } } } return esclen; } /* map '\<c>' escape character */ static char jsonescapechar2(char c) { switch (c) { case '\b': return 'b'; case '\t': return 't'; case '\n': return 'n'; case '\f': return 'f'; case '\r': return 'r'; case '"': return '"'; case '\\': return '\\'; } return '\0'; /* should not happen */ } /* convert 'origbuf' to JSON-escaped form 'escbuf'; 'origbuf' should only include characters mappable by json(paranoid)lentable */ static void encodejsonescape(char *escbuf, Py_ssize_t esclen, const char *origbuf, Py_ssize_t origlen, bool paranoid) { const uint8_t *lentable = (paranoid) ? jsonparanoidlentable : jsonlentable; Py_ssize_t i, j; for (i = 0, j = 0; i < origlen; i++) { char c = origbuf[i]; uint8_t l = lentable[(unsigned char)c]; assert(j + l <= esclen); switch (l) { case 1: escbuf[j] = c; break; case 2: escbuf[j] = '\\'; escbuf[j + 1] = jsonescapechar2(c); break; case 6: memcpy(escbuf + j, "\\u00", 4); escbuf[j + 4] = hexchartable[(unsigned char)c >> 4]; escbuf[j + 5] = hexchartable[(unsigned char)c & 0xf]; break; } j += l; } } PyObject *jsonescapeu8fast(PyObject *self, PyObject *args) { PyObject *origstr, *escstr; const char *origbuf; Py_ssize_t origlen, esclen; int paranoid; if (!PyArg_ParseTuple(args, "O!i:jsonescapeu8fast", &PyBytes_Type, &origstr, ¶noid)) return NULL; origbuf = PyBytes_AS_STRING(origstr); origlen = PyBytes_GET_SIZE(origstr); esclen = jsonescapelen(origbuf, origlen, paranoid); if (esclen < 0) return NULL; /* unsupported char found or overflow */ if (origlen == esclen) { Py_INCREF(origstr); return origstr; } escstr = PyBytes_FromStringAndSize(NULL, esclen); if (!escstr) return NULL; encodejsonescape(PyBytes_AS_STRING(escstr), esclen, origbuf, origlen, paranoid); return escstr; }