[tor-commits] [tor/master] Add a script to list the maintained Tor branches in different ways

[dgoulet@xxxxxxxxxxxxxx]

commit 42660ea0562b1fda4b20f69ede75f9fb9398960b
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Tue Feb 11 12:16:06 2020 -0500

    Add a script to list the maintained Tor branches in different ways
    
    This will be used for 32121
---
 scripts/git/git-list-tor-branches.sh | 153 +++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)

diff --git a/scripts/git/git-list-tor-branches.sh b/scripts/git/git-list-tor-branches.sh
new file mode 100755
index 000000000..d6b30f064
--- /dev/null
+++ b/scripts/git/git-list-tor-branches.sh
@@ -0,0 +1,153 @@
+#!/usr/bin/env bash
+
+# Script to be used by other git scripts, and provide a single place
+# that lists our supported branches.  To change which branches are
+# supported, look at the end of the file that says 'edit here'.
+
+SCRIPT_NAME=$(basename "$0")
+
+function usage()
+{
+    echo "$SCRIPT_NAME [-h] [-l|-s|-b|-m] [-R]"
+    echo
+    echo "  arguments:"
+    echo "   -h: show this help text"
+    echo
+    echo "   -l: list the active tor branches (default)"
+    echo "   -s: list the suffixes to be used with the active tor branches"
+    echo "   -b: write bash code setting WORKTREE to an array of ( branch path ) arrays"
+    echo "   -m: write bash code setting WORKTREE to an array of"
+    echo "       ( branch parent path suffix parent_suffix ) arrays"
+    echo
+    echo "   -R: omit release branches."
+}
+
+# list : just a list of branch names.
+# branch_path : For git-setup-dirs.sh and git-pull-all.sh
+# suffix: write a list of suffixes.
+# merge: branch, upstream, path, suffix, upstream suffix.
+mode="list"
+skip_release_branches="no"
+
+while getopts "hblmsR" opt ; do
+    case "$opt" in
+        h) usage
+           exit 0
+           ;;
+        b) mode="branch_path"
+           ;;
+        l) mode="list"
+           ;;
+        s) mode="suffix"
+           ;;
+        m) mode="merge"
+           ;;
+        R) skip_release_branches="yes"
+           ;;
+        *) echo "Unknown option"
+           exit 1
+           ;;
+    esac
+done
+
+all_branch_vars=()
+
+prev_maint_branch=""
+prev_maint_suffix=""
+
+branch() {
+    # The name of the branch. (Supplied by caller)  Ex: maint-0.4.3
+    brname="$1"
+
+    # The name of the branch with no dots. Ex: maint-043
+    brname_nodots="${brname//./}"
+    # The name of the branch with no dots, and _ instead of -. Ex: maint_043
+    brname_nodots_uscore="${brname_nodots//-/_}"
+    # Name to use for a variable to represent the branch. Ex: MAINT_043
+    varname="${brname_nodots_uscore^^}"
+
+    is_maint="no"
+
+    # suffix: a suffix to place at the end of branches we generate with respect
+    # to this branch.  Ex: _043
+
+    # location: where the branch can be found.
+
+    if [[ "$brname" == "master" ]]; then
+        suffix="_master"
+        location="\$GIT_PATH/\$TOR_MASTER_NAME"
+    elif [[ "$brname" =~ ^maint- ]]; then
+        suffix="_${brname_nodots#maint-}"
+        location="\$GIT_PATH/\$TOR_WKT_NAME/$brname"
+        is_maint="yes"
+    elif [[ "$brname" =~ ^release- ]]; then
+        suffix="_r${brname_nodots#release-}"
+        location="\$GIT_PATH/\$TOR_WKT_NAME/$brname"
+
+        if [[ "$skip_release_branches" = "yes" ]]; then
+            return
+        fi
+    else
+        echo "Unrecognized branch type '${brname}'" >&2
+        exit 1
+    fi
+
+    all_branch_vars+=("$varname")
+
+    # Now emit the per-branch information
+    if [[ "$mode" == "branch_path" ]]; then
+        echo "${varname}=( \"$brname\" \"$location\" )"
+    elif [[ "$mode" == "merge" ]]; then
+        echo "${varname}=( \"$brname\" \"$prev_maint_branch\" \"$location\" \"$suffix\" \"$prev_maint_suffix\" )"
+    elif [[ "$mode" == "list" ]]; then
+        echo "$brname"
+    elif [[ "$mode" == "suffix" ]]; then
+        echo "$suffix"
+    else
+        echo "unknown mode $mode" >&2
+        exit 1
+    fi
+
+    if [[ "$is_maint" == "yes" ]]; then
+        prev_maint_branch="$brname"
+        prev_maint_suffix="$suffix"
+    fi
+}
+
+finish() {
+    if [[ "$mode" == branch_path ]] || [[ "$mode" == merge ]]; then
+        echo "WORKTREE=("
+        for v in "${all_branch_vars[@]}"; do
+            echo "  ${v}[@]"
+        done
+        echo ")"
+    elif [[ "$mode" == list ]] || [[ "$mode" == suffix ]]; then
+        # nothing to do
+        :
+    else
+        echo "unknown mode $mode" >&2
+        exit 1
+    fi
+}
+
+# ==============================
+# EDIT HERE
+# ==============================
+# List of all branches.  These must be in order, from oldest to newest, with
+# maint before release.
+
+branch maint-0.3.5
+branch release-0.3.5
+
+branch maint-0.4.1
+branch release-0.4.1
+
+branch maint-0.4.2
+branch release-0.4.2
+
+branch maint-0.4.3
+branch release-0.4.3
+
+branch master
+
+finish



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