Ticket #9433: root-spkg-install.v3

#!/usr/bin/env bash

# spkg-install file for sage root repo.

CUR=`pwd`

TARGET="$SAGE_ROOT"

cd "$TARGET"
# see if there is a valid Mercurial repository in $SAGE_ROOT
hg verify 1>/dev/null 2>/dev/null
if [ $? -eq 0 ]; then  # valid repo

    # Merge the repository, rather than overwrite changes that the
    # user may have made.
    hg incoming "$CUR" 1> /dev/null
    if [ $? -eq 1 ]; then
        # No changes to pull
        exit 0
    fi
    if [ $? -ne 0 ]; then
        echo "Error with Sage root repository: 'hg incoming' failed."
        exit 1
    fi
    # $? = 0: There are changes to pull.
    # First check in any changes.

    hg commit
    status=$?
    if [ $status -ne 0 -a $status -ne 1 ]; then
        echo "Committing changes failed"
        exit 1
    fi
    hg pull "$CUR" || { echo "Pulling from repo failed"; exit 1; } 
    hg merge tip
    hg commit -m "Check-in during upgrade of Sage"
    status=$?
    if [ $status -ne 0 -a $status -ne 1 ]; then
        echo "Checking in new repo failed"
        exit 1
    fi
    hg update || { echo "'hg update' failed"; exit 1; }

else

    # Initial install.  First get rid of "makefile" (since it's been
    # renamed to "Makefile" in the repo, and if both "makefile" and
    # "Makefile" are present, the former gets used).
    if [ -f "$TARGET"/makefile ]; then
        mv "$TARGET"/makefile "$TARGET"/Makefile.old
    fi
    if [ $? -ne 0 ]; then
        echo "Root repo: Error backing up old makefile"
        exit 1
    fi

    # Now just copy all the files over.
    cd "$CUR"
    cp -rp .hg* COPYING.txt README.txt sage ipython "$TARGET"
    if [ $? -ne 0 ]; then
        echo "Root repo: Error copying files from Sage root repo to $TARGET"
        exit 1
    fi
    
    if [ -f makefile ]; then
        cp makefile "$TARGET"/Makefile
    else
        cp Makefile "$TARGET"
    fi
    if [ $? -ne 0 ]; then
        echo "Root repo: Error copying Makefile"
        exit 1
    fi
    
    mkdir -p "$TARGET/spkg/standard"
    if [ $? -ne 0 ]; then
        echo "Root repo: Error creating directory $TARGET/spkg/standard"
        exit 1
    fi

    cd spkg
    cp README.txt gen_html install pipestatus root-spkg-install "$TARGET/spkg"
    if [ $? -ne 0 ]; then
        echo "Root repo: Error copying files to $TARGET/spkg"
        exit 1
    fi

    cd standard
    cp README.txt deps libdist_filelist newest_version "$TARGET/spkg/standard"
    if [ $? -ne 0 ]; then
        echo "Root repo: Error copying files to $TARGET/spkg/standard"
        exit 1
    fi

fi