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[minor] reduce substr (#18611)

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* minor

* correct

* unify the type of addrLen

* Update lib/packages/docutils/rstgen.nim
This commit is contained in:
flywind 2021-07-30 15:32:00 +08:00 • committed by GitHub
commit c6fadb1799
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2 changed files with 7 additions and 5 deletions
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2
lib/packages/docutils/rstgen.nim
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@ -675,7 +675,7 @@ proc readIndexDir(dir: string):
var x = fileEntries[0].link
let i = find(x, '#')
if i > 0:
x = x.substr(0, i-1)
x.setLen(i)
if i != 0:
# don't add entries starting with '#'
result.modules.add(x.changeFileExt(""))

10
lib/pure/nativesockets.nim
View file

@ -14,6 +14,7 @@
import os, options
import std/private/since
import std/strbasics
when hostOS == "solaris":
@ -468,7 +469,7 @@ proc getAddrString*(sockAddr: ptr SockAddr): string =
if sockAddr.sa_family.cint == nativeAfInet:
result = $inet_ntoa(cast[ptr Sockaddr_in](sockAddr).sin_addr)
elif sockAddr.sa_family.cint == nativeAfInet6:
let addrLen = when not useWinVersion: posix.INET6_ADDRSTRLEN
let addrLen = when not useWinVersion: posix.INET6_ADDRSTRLEN.int
else: 46 # it's actually 46 in both cases
result = newString(addrLen)
let addr6 = addr cast[ptr Sockaddr_in6](sockAddr).sin6_addr
@ -477,7 +478,7 @@ proc getAddrString*(sockAddr: ptr SockAddr): string =
result.len.int32) == nil:
raiseOSError(osLastError())
if posix.IN6_IS_ADDR_V4MAPPED(addr6) != 0:
result = result.substr("::ffff:".len)
result.setSlice("::ffff:".len..<addrLen)
else:
if winlean.inet_ntop(winlean.AF_INET6, addr6, addr result[0],
result.len.int32) == nil:
@ -495,7 +496,8 @@ proc getAddrString*(sockAddr: ptr SockAddr, strAddress: var string) =
##
## **Note**
## * `strAddress` must be initialized to 46 in length.
assert(46 == len(strAddress),
const length = 46
assert(length == len(strAddress),
"`strAddress` was not initialized correctly. 46 != `len(strAddress)`")
if sockAddr.sa_family.cint == nativeAfInet:
let addr4 = addr cast[ptr Sockaddr_in](sockAddr).sin_addr
@ -514,7 +516,7 @@ proc getAddrString*(sockAddr: ptr SockAddr, strAddress: var string) =
strAddress.len.int32) == nil:
raiseOSError(osLastError())
if posix.IN6_IS_ADDR_V4MAPPED(addr6) != 0:
strAddress = strAddress.substr("::ffff:".len)
strAddress.setSlice("::ffff:".len..<length)
else:
if winlean.inet_ntop(winlean.AF_INET6, addr6, addr strAddress[0],
strAddress.len.int32) == nil: