Mercurial > hg
annotate mercurial/cffi/osutil.py @ 32658:55ff67ffcead
scmutil: introduce binnode(ctx) as paired function with intrev(ctx)
It seemed silly to convert ctx.hex() back to binary to use node.hex/short(),
or to use [:12] instead of node.short() because ctx.node() could be None.
Eventually I want to change wctx.rev() and wctx.node() to return wdirrev and
wdirid respectively, but that's quite big API breakage and can't be achieved
without some compatibility wrappers.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sat, 03 Jun 2017 19:12:01 +0900 |
parents | 0e8b0b9a7acc |
children | 857876ebaed4 |
rev | line source |
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1 # osutil.py - CFFI version of osutil.c |
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2 # |
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3 # Copyright 2016 Maciej Fijalkowski <fijall@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import os |
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11 import stat as statmod |
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12 |
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13 from ..pure.osutil import * |
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14 |
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15 from .. import ( |
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16 pycompat, |
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17 ) |
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18 |
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19 if pycompat.sysplatform == 'darwin': |
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20 from . import _osutil |
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21 |
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22 ffi = _osutil.ffi |
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23 lib = _osutil.lib |
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24 |
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25 listdir_batch_size = 4096 |
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26 # tweakable number, only affects performance, which chunks |
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27 # of bytes do we get back from getattrlistbulk |
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28 |
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29 attrkinds = [None] * 20 # we need the max no for enum VXXX, 20 is plenty |
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30 |
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31 attrkinds[lib.VREG] = statmod.S_IFREG |
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32 attrkinds[lib.VDIR] = statmod.S_IFDIR |
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33 attrkinds[lib.VLNK] = statmod.S_IFLNK |
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34 attrkinds[lib.VBLK] = statmod.S_IFBLK |
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35 attrkinds[lib.VCHR] = statmod.S_IFCHR |
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36 attrkinds[lib.VFIFO] = statmod.S_IFIFO |
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37 attrkinds[lib.VSOCK] = statmod.S_IFSOCK |
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38 |
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39 class stat_res(object): |
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40 def __init__(self, st_mode, st_mtime, st_size): |
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41 self.st_mode = st_mode |
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42 self.st_mtime = st_mtime |
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43 self.st_size = st_size |
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44 |
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45 tv_sec_ofs = ffi.offsetof("struct timespec", "tv_sec") |
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46 buf = ffi.new("char[]", listdir_batch_size) |
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47 |
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48 def listdirinternal(dfd, req, stat, skip): |
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49 ret = [] |
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50 while True: |
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51 r = lib.getattrlistbulk(dfd, req, buf, listdir_batch_size, 0) |
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52 if r == 0: |
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53 break |
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54 if r == -1: |
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55 raise OSError(ffi.errno, os.strerror(ffi.errno)) |
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56 cur = ffi.cast("val_attrs_t*", buf) |
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57 for i in range(r): |
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58 lgt = cur.length |
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59 assert lgt == ffi.cast('uint32_t*', cur)[0] |
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60 ofs = cur.name_info.attr_dataoffset |
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61 str_lgt = cur.name_info.attr_length |
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62 base_ofs = ffi.offsetof('val_attrs_t', 'name_info') |
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63 name = str(ffi.buffer(ffi.cast("char*", cur) + base_ofs + ofs, |
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64 str_lgt - 1)) |
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65 tp = attrkinds[cur.obj_type] |
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66 if name == "." or name == "..": |
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67 continue |
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68 if skip == name and tp == statmod.S_ISDIR: |
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69 return [] |
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70 if stat: |
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71 mtime = cur.mtime.tv_sec |
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72 mode = (cur.accessmask & ~lib.S_IFMT)| tp |
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73 ret.append((name, tp, stat_res(st_mode=mode, st_mtime=mtime, |
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74 st_size=cur.datalength))) |
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75 else: |
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76 ret.append((name, tp)) |
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77 cur = ffi.cast("val_attrs_t*", int(ffi.cast("intptr_t", cur)) |
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78 + lgt) |
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79 return ret |
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80 |
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81 def listdir(path, stat=False, skip=None): |
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82 req = ffi.new("struct attrlist*") |
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83 req.bitmapcount = lib.ATTR_BIT_MAP_COUNT |
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84 req.commonattr = (lib.ATTR_CMN_RETURNED_ATTRS | |
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85 lib.ATTR_CMN_NAME | |
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86 lib.ATTR_CMN_OBJTYPE | |
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87 lib.ATTR_CMN_ACCESSMASK | |
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88 lib.ATTR_CMN_MODTIME) |
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89 req.fileattr = lib.ATTR_FILE_DATALENGTH |
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90 dfd = lib.open(path, lib.O_RDONLY, 0) |
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91 if dfd == -1: |
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92 raise OSError(ffi.errno, os.strerror(ffi.errno)) |
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93 |
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94 try: |
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95 ret = listdirinternal(dfd, req, stat, skip) |
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96 finally: |
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97 try: |
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98 lib.close(dfd) |
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99 except BaseException: |
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100 pass # we ignore all the errors from closing, not |
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101 # much we can do about that |
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102 return ret |