initial commit

1 files changed, 66 insertions, 0 deletions

diff --git a/comp2041/tigger/tigger-rm b/comp2041/tigger/tigger-rm
new file mode 100755
index 0000000..e50420a
--- /dev/null
+++ b/comp2041/tigger/tigger-rm
@@ -0,0 +1,66 @@
+#!/bin/dash
+
+# Test if we have a valid repo before doing anything.
+if ! [ -d ".tigger/" ]; then
+  printf "tigger-add: error: tigger repository directory .tigger not found\n" >&2
+  exit 1
+fi
+
+# Get current branch, then current commit (default 0).
+branch=$(cat .tigger/branch.tig)
+mkdir --parents ".tigger/$branch/"
+commit=$(find .tigger/"$branch"/ -maxdepth 1 -type d | grep -o -E "[\/][^\/]*$" | tr -d "/" | sort -n -r | head -n 1)
+if [ "$commit" = "" ]; then
+  commit="0"
+  mkdir --parents ".tigger/$branch/$commit/"
+fi
+
+commit_files=".tigger/$branch/$commit/"
+mkdir --parents "$commit_files/commit/"
+mkdir --parents "$commit_files/staged/"
+
+for filename in $(echo "$@" | sed "s|--force||g" | sed "s|--cached||g"); do
+  
+  basename=$(basename "$filename")
+  if ! [ -e .tigger/"$branch"/"$commit"/staged/"$basename" ]; then
+    printf "tigger-rm: error: '%s' is not in the tigger repository\n" "$basename" >&2
+    exit 1
+  fi
+
+  # Accidental deletion checking, should be non-cached and non-forced.
+  if [ "$(echo "$@" | grep -o -E "\-\-force")" = "" ]; then
+
+    if [ "$(cmp --silent .tigger/"$branch"/"$commit"/staged/"$basename" "$basename"; echo $?)" -ne 0 ]; then
+    
+      if [ "$(cmp --silent .tigger/"$branch"/"$commit"/staged/"$basename" .tigger/"$branch"/"$commit"/commit/"$basename"; echo $?)" -ne 0 ]; then
+        printf "tigger-rm: error: '%s' in index is different to both the working file and the repository\n" "$basename" >&2
+        exit 1
+      fi
+
+      if ! [ "$(echo "$@" | grep -o -E "\-\-cached")" != "" ]; then
+        printf "tigger-rm: error: '%s' in the repository is different to the working file\n" "$basename" >&2
+        exit 1
+      fi
+
+    fi
+    
+
+    if ! [ "$(echo "$@" | grep -o -E "\-\-cached")" != "" ]; then
+      if [ "$(cmp --silent .tigger/"$branch"/"$commit"/staged/"$basename" .tigger/"$branch"/"$commit"/commit/"$basename"; echo $?)" -ne 0 ]; then
+        printf "tigger-rm: error: '%s' has staged changes in the index\n" "$basename" >&2
+        exit 1
+      fi
+    fi
+  fi
+
+  rm --force .tigger/"$branch"/"$commit"/staged/"$basename"
+  # If the cached option is specified the files are removed only from the index.
+  if [ "$(echo "$@" | grep -o -E "\-\-cached")" != "" ]; then
+    continue
+  fi
+
+  rm --force "$basename"
+
+done
+
+exit 0