upstream/mercurial-mirror Files · mercurial/cext/charencode.h

repository: define and use revision flag constants...

repository: define and use revision flag constants Revlogs have a per-revision 2 byte field holding integer flags that define how revision data should be interpreted. For historical reasons, these integer values are sent verbatim on the wire protocol as part of changegroup data. From a semantic standpoint, the flags that go out over the wire are different from the flags stored internally by revlogs. Failure to establish this semantic distinction creates unwanted strong coupling between revlog's internals and the wire protocol. This commit establishes new constants on the repository module that define the revision flags used by the wire protocol (and by some internal storage APIs, sadly). The changegroups internals documentation has been updated to document them explicitly. Various references throughout the repo now use the repository constants instead of the revlog constants. This is done to make it clear that we're operating on generic revision data and this isn't tied to revlogs. Differential Revision: https://phab.mercurial-scm.org/D4860

Augie Fackler - - Load All Authors

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      /*

       charencode.h - miscellaneous character encoding

       This software may be used and distributed according to the terms of

       the GNU General Public License, incorporated herein by reference.

      */

      #ifndef _HG_CHARENCODE_H_

      #define _HG_CHARENCODE_H_

      #include <Python.h>

      #include "compat.h"

      /* This should be kept in sync with normcasespecs in encoding.py. */

      enum normcase_spec {

      	NORMCASE_LOWER = -1,

      	NORMCASE_UPPER = 1,

      	NORMCASE_OTHER = 0

      };

      PyObject *unhexlify(const char *str, Py_ssize_t len);

      PyObject *isasciistr(PyObject *self, PyObject *args);

      PyObject *asciilower(PyObject *self, PyObject *args);

      PyObject *asciiupper(PyObject *self, PyObject *args);

      PyObject *make_file_foldmap(PyObject *self, PyObject *args);

      PyObject *jsonescapeu8fast(PyObject *self, PyObject *args);

      /* clang-format off */

      static const int8_t hextable[256] = {

      	-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,

      	 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, /* 0-9 */

      	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */

      	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,

      	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */

      	-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,

      	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1

      };

      /* clang-format on */

      static inline int hexdigit(const char *p, Py_ssize_t off)

      {

      	int8_t val = hextable[(unsigned char)p[off]];

      	if (val >= 0) {

      		return val;

      	}

      	PyErr_SetString(PyExc_ValueError, "input contains non-hex character");

      	return 0;

      }

      #endif /* _HG_CHARENCODE_H_ */

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				/*
				charencode.h - miscellaneous character encoding

				This software may be used and distributed according to the terms of
				the GNU General Public License, incorporated herein by reference.
				*/

				#ifndef _HG_CHARENCODE_H_
				#define _HG_CHARENCODE_H_

				#include <Python.h>
				#include "compat.h"

				/* This should be kept in sync with normcasespecs in encoding.py. */
				enum normcase_spec {
				NORMCASE_LOWER = -1,
				NORMCASE_UPPER = 1,
				NORMCASE_OTHER = 0
				};

				PyObject unhexlify(const char str, Py_ssize_t len);
				PyObject isasciistr(PyObject self, PyObject *args);
				PyObject asciilower(PyObject self, PyObject *args);
				PyObject asciiupper(PyObject self, PyObject *args);
				PyObject make_file_foldmap(PyObject self, PyObject *args);
				PyObject jsonescapeu8fast(PyObject self, PyObject *args);

				/* clang-format off */
				static const int8_t hextable[256] = {
				-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,
				0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 0-9 */
				-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */
				-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
				-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */
				-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,
				-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
				};
				/* clang-format on */

				static inline int hexdigit(const char *p, Py_ssize_t off)
				{
				int8_t val = hextable[(unsigned char)p[off]];

				if (val >= 0) {
				return val;
				}

				PyErr_SetString(PyExc_ValueError, "input contains non-hex character");
				return 0;
				}

				#endif /* _HG_CHARENCODE_H_ */