upstream/mercurial-mirror Files · contrib/packaging/packagelib.sh

posix: always seek to EOF when opening a file in append mode...

posix: always seek to EOF when opening a file in append mode Python 3 already does this, so skip it there. Consider the program: #include <stdio.h> int main() { FILE *f = fopen("narf", "w"); fprintf(f, "narf\n"); fclose(f); f = fopen("narf", "a"); printf("%ld\n", ftell(f)); fprintf(f, "troz\n"); printf("%ld\n", ftell(f)); return 0; } on macOS, FreeBSD, and Linux with glibc, this program prints 5 10 but on musl libc (Alpine Linux and probably others) this prints 0 10 By my reading of https://pubs.opengroup.org/onlinepubs/009695399/functions/fopen.html this is technically correct, specifically: > Opening a file with append mode (a as the first character in the > mode argument) shall cause all subsequent writes to the file to be > forced to the then current end-of-file, regardless of intervening > calls to fseek(). in other words, the file position doesn't really matter in append-mode files, and we can't depend on it being at all meaningful unless we perform a seek() before tell() after open(..., 'a'). Experimentally after a .write() we can do a .tell() and it'll always be reasonable, but I'm unclear from reading the specification if that's a smart thing to rely on. This matches what we do on Windows and what Python 3 does for free, so let's just be consistent. Thanks to Yuya for the idea.

Mathias De Mare - - Load All Authors

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5.0.2 stable

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        Gregory Szorc
    
packaging: move packagelib.sh into contrib/packaging/...

              r38025
            
      # Extract version number into 4 parts, some of which may be empty:

      #

      # version: the numeric part of the most recent tag. Will always look like 1.3.

      #

      # type: if an rc build, "rc", otherwise empty

      #

      # distance: the distance from the nearest tag, or empty if built from a tag

      #

      # node: the node|short hg was built from, or empty if built from a tag

      gethgversion() {

          export HGRCPATH=

          export HGPLAIN=

          make cleanbutpackages

          make local PURE=--pure

          HG="$PWD/hg"

          "$HG" version > /dev/null || { echo 'abort: hg version failed!'; exit 1 ; }

          hgversion=`LANGUAGE=C "$HG" version | sed -ne 's/.*(version \(.*\))$/\1/p'`

          if echo $hgversion | grep + > /dev/null 2>&1 ; then

              tmp=`echo $hgversion | cut -d+ -f 2`

              hgversion=`echo $hgversion | cut -d+ -f 1`

              distance=`echo $tmp | cut -d- -f 1`

              node=`echo $tmp | cut -d- -f 2`

          else

              distance=''

              node=''

          fi

        Mathias De Mare
    
packaging: modify rc detection to work with X.Yrc instead of X.Y-rc...

              r41759
            
          if echo $hgversion | grep -E -- '[0-9]\.[0-9](\.[0-9])?rc' > /dev/null 2>&1; then

              version=`echo $hgversion | cut -d'r' -f1`

              type="rc`echo $hgversion | cut -d'c' -f2-`"

        Gregory Szorc
    
packaging: move packagelib.sh into contrib/packaging/...

              r38025
            
          else

              version=$hgversion

              type=''

          fi

      }

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Gregory Szorc packaging: move packagelib.sh into contrib/packaging/...	r38025	# Extract version number into 4 parts, some of which may be empty:
		#
		# version: the numeric part of the most recent tag. Will always look like 1.3.
		#
		# type: if an rc build, "rc", otherwise empty
		#
		# distance: the distance from the nearest tag, or empty if built from a tag
		#
		# node: the node\|short hg was built from, or empty if built from a tag
		gethgversion() {
		export HGRCPATH=
		export HGPLAIN=

		make cleanbutpackages
		make local PURE=--pure
		HG="$PWD/hg"

		"$HG" version > /dev/null \|\| { echo 'abort: hg version failed!'; exit 1 ; }

		hgversion=`LANGUAGE=C "$HG" version \| sed -ne 's/.(version \(.\))$/\1/p'`

		if echo $hgversion \| grep + > /dev/null 2>&1 ; then
		tmp=`echo $hgversion \| cut -d+ -f 2`
		hgversion=`echo $hgversion \| cut -d+ -f 1`
		distance=`echo $tmp \| cut -d- -f 1`
		node=`echo $tmp \| cut -d- -f 2`
		else
		distance=''
		node=''
		fi
Mathias De Mare packaging: modify rc detection to work with X.Yrc instead of X.Y-rc...	r41759	if echo $hgversion \| grep -E -- '[0-9]\.[0-9](\.[0-9])?rc' > /dev/null 2>&1; then
		version=`echo $hgversion \| cut -d'r' -f1`
		type="rc`echo $hgversion \| cut -d'c' -f2-`"
Gregory Szorc packaging: move packagelib.sh into contrib/packaging/...	r38025	else
		version=$hgversion
		type=''
		fi
		}