upstream/mercurial-mirror Files · mercurial/bitmanipulation.h

shelve: raise an error when loading a corrupt state file in an impossible case...

shelve: raise an error when loading a corrupt state file in an impossible case The old return statement was flagged by pytype 2023.06.16 running under python 3.10.11. No idea why it isn't caught in CI running the same pytype with py3.7. This function is only called by `unshelvecmd()` (which first checks that either `--abort` or `--continue` is specified), and `hgabortunshelve()` and `hgcontinueunshelve()`, which locally apply `--abort` or `--continue` respectively. Therefore, there is no other way to call this, and this error should never be seen, but pytype can't figure that out on its own. Given that the abort case clears the state, it seems reasonable to defensively code this and not make that a blanket `else` case, on the off chance a 3rd way of calling this appears in the future.

David Demelier - - Load All Authors

File last commit:

r49095:d8690805 default


                r52706:54b1a373

default

Download file

             bitmanipulation.h
        
                    77 lines
            
             | 1.7 KiB
            
                | text/x-c
            
             |
                CLexer
            
             / mercurial / bitmanipulation.h
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      #ifndef HG_BITMANIPULATION_H

      #define HG_BITMANIPULATION_H

      #include <string.h>

      #include "compat.h"

      /* Reads a 64 bit integer from big-endian bytes. Assumes that the data is long

       enough */

      static inline uint64_t getbe64(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((((uint64_t)d[0]) << 56) | (((uint64_t)d[1]) << 48) |

      	        (((uint64_t)d[2]) << 40) | (((uint64_t)d[3]) << 32) |

      	        (((uint64_t)d[4]) << 24) | (((uint64_t)d[5]) << 16) |

      	        (((uint64_t)d[6]) << 8) | (d[7]));

      }

      static inline uint32_t getbe32(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((((uint32_t)d[0]) << 24) | (((uint32_t)d[1]) << 16) |

      	        (((uint32_t)d[2]) << 8) | (d[3]));

      }

      static inline int16_t getbeint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) | (d[1]));

      }

      static inline uint16_t getbeuint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) | (d[1]));

      }

      /* Writes a 64 bit integer to bytes in a big-endian format.

       Assumes that the buffer is long enough */

      static inline void putbe64(uint64_t x, char *c)

      {

      	c[0] = (x >> 56) & 0xff;

      	c[1] = (x >> 48) & 0xff;

      	c[2] = (x >> 40) & 0xff;

      	c[3] = (x >> 32) & 0xff;

      	c[4] = (x >> 24) & 0xff;

      	c[5] = (x >> 16) & 0xff;

      	c[6] = (x >> 8) & 0xff;

      	c[7] = (x)&0xff;

      }

      static inline void putbe32(uint32_t x, char *c)

      {

      	c[0] = (x >> 24) & 0xff;

      	c[1] = (x >> 16) & 0xff;

      	c[2] = (x >> 8) & 0xff;

      	c[3] = (x)&0xff;

      }

      static inline double getbefloat64(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	double ret;

      	int i;

      	uint64_t t = 0;

      	for (i = 0; i < 8; i++) {

      		t = (t << 8) + d[i];

      	}

      	memcpy(&ret, &t, sizeof(t));

      	return ret;

      }

      #endif

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				#ifndef HG_BITMANIPULATION_H
				#define HG_BITMANIPULATION_H

				#include <string.h>

				#include "compat.h"

				/* Reads a 64 bit integer from big-endian bytes. Assumes that the data is long
				enough */
				static inline uint64_t getbe64(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((((uint64_t)d[0]) << 56) \| (((uint64_t)d[1]) << 48) \|
				(((uint64_t)d[2]) << 40) \| (((uint64_t)d[3]) << 32) \|
				(((uint64_t)d[4]) << 24) \| (((uint64_t)d[5]) << 16) \|
				(((uint64_t)d[6]) << 8) \| (d[7]));
				}

				static inline uint32_t getbe32(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((((uint32_t)d[0]) << 24) \| (((uint32_t)d[1]) << 16) \|
				(((uint32_t)d[2]) << 8) \| (d[3]));
				}

				static inline int16_t getbeint16(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((d[0] << 8) \| (d[1]));
				}

				static inline uint16_t getbeuint16(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((d[0] << 8) \| (d[1]));
				}

				/* Writes a 64 bit integer to bytes in a big-endian format.
				Assumes that the buffer is long enough */
				static inline void putbe64(uint64_t x, char *c)
				{
				c[0] = (x >> 56) & 0xff;
				c[1] = (x >> 48) & 0xff;
				c[2] = (x >> 40) & 0xff;
				c[3] = (x >> 32) & 0xff;
				c[4] = (x >> 24) & 0xff;
				c[5] = (x >> 16) & 0xff;
				c[6] = (x >> 8) & 0xff;
				c[7] = (x)&0xff;
				}

				static inline void putbe32(uint32_t x, char *c)
				{
				c[0] = (x >> 24) & 0xff;
				c[1] = (x >> 16) & 0xff;
				c[2] = (x >> 8) & 0xff;
				c[3] = (x)&0xff;
				}

				static inline double getbefloat64(const char *c)
				{
				const unsigned char d = (const unsigned char )c;
				double ret;
				int i;
				uint64_t t = 0;
				for (i = 0; i < 8; i++) {
				t = (t << 8) + d[i];
				}
				memcpy(&ret, &t, sizeof(t));
				return ret;
				}

				#endif